CDMA2000 1xEV-DO Rev.a Performance Parameters

CDMA2000 1xEV-DO Rev.A Performance Parameters Security Level

2008-02-14 All Rights Reserved Page 1 of 134

Document No.

Product

name CBSS

Intended audience

Customers Product version

V2R3

Edited by CDMA Network Performance Research Department

Document version

CDMA2000 1xEV-DO Rev.A Performance Parameters

Prepared by CDMA Network Performance Research Department

Date 2007-02

Reviewed by Date

Reviewed by Date

Approved by Date

Huawei Technologies Co., Ltd.

All Rights Reserved



Revision Record

Date Release Description Author

2007-02 1.0 The first draft is finished.

Jiang Ying

Wu Yufeng

Huang Jianzhong

Xu Qiongtao

Li Wei



Table of Contents Chapter 1 Introduction ..................................................................................................................... 4

1.1 About This Document ........................................................................................................... 4 1.2 Conventions .......................................................................................................................... 5

Chapter 2 Channel Parameters ....................................................................................................... 7 2.1 Forward Channel Parameters............................................................................................... 7 2.2 Reverse Channel Parameters............................................................................................. 10

Chapter 3 Access Parameters....................................................................................................... 15

Chapter 4 Admission Control Parameters ................................................................................... 27 4.1 Forward Admission Control Parameters............................................................................. 27 4.2 Other Admission Control Parameters ................................................................................. 29

Chapter 5 Handoff Parameters...................................................................................................... 31 5.1 Pilot Set Decision................................................................................................................ 31 5.2 Configuration Negotiation ................................................................................................... 34 5.3 Soft Handoff ........................................................................................................................ 37 5.4 Same-frequency Neighbor Handoff Parameters................................................................. 38 5.5 Intra-AN Hard Handoff ........................................................................................................ 40

Chapter 6 Forward QoS Parameters of the Air Interface............................................................ 41

Chapter 7 Reverse QoS Parameters of the Air Interface............................................................ 57 7.1 General Parameter Table of RL MAC................................................................................. 57 7.2 RL MAC User Class Parameters ........................................................................................ 75 7.3 RL MAC Rate Class Parameter Table................................................................................ 94 7.4 RL MAC Flow Level Parameter Table .............................................................................. 102

Chapter 8 Reverse Power Control Parameters.......................................................................... 131 8.1 Reverse Target PER (DOAREVPER)............................................................................... 131 8.2 Minimum PCT (MINPCT) .................................................................................................. 131 8.3 Maximum PCT (MAXPCT)................................................................................................ 132 8.4 Initial PCT (INITPCT) ........................................................................................................ 132 8.5 PCT UP Step of IDLE Frame in NoData State (NODATADELTA) ................................... 133 8.6 Maximum PCT Increment in NoData State (NoDataMaxIncrease) .................................. 133 8.7 Maximum PCT in NoData State (NoDataMaxPCT) .......................................................... 133



Chapter 1 Introduction

1.1 About This Document

1.1.1 Purpose

This document systematically describes the configuration parameters related to the CDMA2000 1xEV-DO Rev.A system in the aspect of functions. This document provides the function, type, relation commands, value range, recommended value, and setting tradeoff of each parameter.

1.1.2 Intended Audience

This document is intended for the engineers who are familiar with the basic concepts of the CDMA2000 1xEV-DO Rev.A system.

1.1.3 Organization

This document describes the performance parameters of the CDMA2000 1xEV-DO Rev.A system. It consists of eight chapters and is organized as follows:

Chapter 1 Introduction introduces the purpose, intended audience, and organization of this document.

Chapter 2 Channel Parameters describes the parameters related to the forward control channel, forward DRCLock channel, reverse DRC channel, reverse ACK channel, and reverse traffic channel.

Chapter 3 Access Parameters describes the settings of fields in the access parameter message.

Chapter 4 Admission Control Parameters describes the parameters used in the admission control algorithm.

Chapter 5 Handoff Parameters describes the parameters related to various handoff algorithms, handoff decision, and pilot pollution detection.

Chapter 6 Reverse QoS Parameters of the Air Interface describes the parameters used in the reverse QoS algorithm of the air interface.

Chapter 7 Forward QoS Parameters of the Air Interface describes the parameters used in the forward QoS algorithm of the air interface.

Chapter 8 Reverse Power Control Parameters describes the parameters used in the reverse power control algorithm.



1.1.4 References

[1]. C.S0024-A_v3.0_060912.pdf, 3GPP2, 2006

[2]. 1xEV-DO Revision A Parameter Setting Guidelines, Qualcomm, 2006

1.2 Conventions

This document is applicable to BSC V200R003C03.

Constraint in this document: If there is any disagreement with the latest technical recommendations and technical notifications, this document is subject to these technical recommendations and technical notifications.

Description of software parameters: This document describes the key parameters related to various functions from the technical viewpoint. But it does not authorize the on-site modification of these software parameters. Any modification on software parameters must conform to the latest procedure provided by Huawei.

Description of items related to parameters:

Parameter Name:

The name of each parameter is the name of the parameter in the Help of the Service Maintenance System.

Description

This item describes the function of the parameter.

Type

This item describes the type of the parameter, that is, whether the parameter is an internal algorithm parameter or an air interface parameter. For an air interface parameter, this item also describes the system message that carries the parameter.

Command Line

This item describes the commands that are used to modify and query the parameter.

Allowed Range

This item provides the value range of the parameter. The value range is closely related to the specific data structure.

Default Value

The default value is determined based on the setting tradeoff. The parameter value must be based on the actual need.

Setting Tradeoff



This item describes the effects of setting the parameter "too high" and "too low" beyond the recommended range.



Chapter 2 Channel Parameters

2.1 Forward Channel Parameters

2.1.1 Control Channel Rate (CCHRATE)

Description: This parameter specifies the data rate of the control channel.

Type: The system parameter of sector carrier level

Command Line: Modify Command: MOD DOCCHP

Search Command: LST DOCCHP

Allowed Range: RATE76K8(76.8KBPS), RATE38K4 (38.4KBPS)

Default Value: RATE76K8(76.8KBPS)

Setting Tradeoff: If the control channel rate is high, the timeslots occupied for sending control channel packets are less. Thus, the control channel and traffic channel capacity increases but the coverage area of the control channel decreases.

2.1.2 Control Channel Capsule Offset (CAPSULEOFFSET)

Description: This parameter indicates the offset of the synchronous control channel relative to the control channel period, as shown in Figure 2-1. The offset can make the start time of control channel capsules of adjacent sectors different to decrease the interference when the AT demodulates synchronous control channel by turns and to increase the probability that the AT demodulates correctly synchronous control channel capsules.

Figure 2-1 Control channel structure

Type: The air interface parameter of sector carrier level



Command Line: Modify Command: MOD DOCCHP

Search Command: LST DOCCHP

Allowed Range: 0–3 (unit: timeslots)

Default Value: 0

Setting Tradeoff: None.

2.1.3 DRCLock Bit Transmission Interval (DRCLOCKPERIOD)

Description: This parameter specifies the number of timeslots between two continuous DRCLock bits transmitted on the forward MAC channel. Figure 2-2 shows the sampling of DRCLock bits.

Figure 2-2 Sampling of DRCLock bits


Command Line: Modify Command: MOD DOCNP

Search Command: LST DOCNP

Allowed Range: SLOT8(8 TIMESLOTS), SLOT16(16 TIMESLOTS)

Default Value: SLOT16

Setting Tradeoff: If the parameter is set to a small value, the AN reports DRCLock bits much faster to facilitate responding on the change of the DRC channel but the speed of reverse power control is reduced.

2.1.4 Default Protocol DRCLock Bit Repetition Times (DRCLOCKLENGTH)

Description: This parameter specifies the repetition times of DRCLock bits

transmitted on the forward MAC channel.






Allowed Range: TIMES4(4 Times), TIMES8(8 Times), TIMES16(16 Times),

TIME32(32 Times)

Default Value: TIMES8

Setting Tradeoff: If the parameter is set too low, the latency of the DRCLock bit

change is reduced. But the transmission reliability of DRCLock bits is

lower. If the parameter is set too high, the latency of the DRCLock bit

change is higher. But the transmission reliability of DRCLock bits is

improved.

2.1.5 Enhanced Protocol DRCLock Bit Repetition Times (DRCLOCKLENGTH)

Description: This parameter specifies the repetition times of DRCLock bits

transmitted on the forward MAC channel.




Allowed Range: TIMES8(8 Times), TIMES16(16 Times), TIME32(32 Times),

TIMES64(64 Times)

Default Value: TIMES16

Setting Tradeoff: If the parameter is set too low, the latency of the DRCLock bit

change is reduced. But the transmission reliability of DRCLock bits is

lower. If the parameter is set too high, the latency of the DRCLock bit

change is higher. But the transmission reliability of DRCLock bits is

improved.

2.1.6 Multiuser Packets Enabled (MULTIUSERPKTEN)

Description: This is a flag that is sent by the AN to the AT to indicate whether

the AT should decode the multiuser packet.

Type: Global configuration negotiation parameter



Command Line: Modify Command: MOD DOGCNP

Search Command: LST DOGCNP

Allowed Range: YES(ALLOWED), NO(PROHIBITED)

Default Value: NO

Setting Tradeoff: If this parameter is disabled, the AT does not decode the

multiuser packet that is sent by the AN. As a result, this may cause

delay sensitive applications do not meet their QoS requirements.

2.1.7 Short Packets Enabled Threshold (SHRTPKTENTHRLD)

Description: This parameter indicates the threshold for which the AN serves an AT requesting a given DRC with a short packet format.




Allowed Range: BIT2048(2048 BITS), BIT1024(1024 BITS),

BIT3072(3072BITS), BIT4096(4096 BITS)

Default Value: BIT2048

Setting Tradeoff: If this threshold is set too high, the time for the AT to decode a packet may be increased. If this threshold is set too low, the short packet formats that the AN can choose from to schedule a transmission to the AT are fewer. This may decrease the transmission efficiency of the control channel and cause delay sensitive applications to not meet their QoS requirements.

2.2 Reverse Channel Parameters

2.2.1 DRC Channel Gain (DRCChannelGain)

Description: This parameter indicates the power offset of the reverse DRC channel relative to the reverse pilot channel. Based the number of soft handoff legs, DRCChannelGain is divided into DRCCHGAIN1 to DRCCHGAIN6, respectively corresponding to the power offsets when the number of soft handoff legs is from 1 to 6.

Type: The air interface parameter of module level

Command Line: Modify Command: MOD DOMPP



Search Command: LST DOMPP

Allowed Range: –18 to 12 (unit: 0.5 dB)

Default Value: Recommended value provided by Qualcomm, as listed in

Table 2-1.

Table 2-1 Qualcomm recommended value of DRCChannelGain with different soft handoff leg count

Setting Tradeoff: If the value is set too high, the reliability of DRC transmission is higher, but the effect on the throughput of the reverse link is greater. If the value is set too low, the effect on the throughput of the reverse link is less, and the reliability of DRC transmission is reduced. The parameter value varies according to the number of soft handoff legs.

2.2.2 Default Protocol DRC Channel Continuous Transmission Enabled (DRCGATING)

Description: When the DRC channel is transmitted continuously, each DRC

value is transmitted on the DRCLength timeslots. If the DRCGating is

equal to 1, perform gated DRC transmission. In the case of gated

DRC transmission, the DRC value is transmitted on only one

DRCLength timeslot. The timeslot is called active timeslot when the

DRC channel is not gated.




Allowed Range: CONTINUOUS(YES), DISCONTINUOUS(NO)

Default Value: CONTINUOUS(YES)



Setting Tradeoff: If the DRCGating is enabled, the interference of the

reverse link is reduced, but the performance of the DRC channel is

deteriorated. The continuous DRC channel transmission can improve

the DRC channel performance, but it increases the reverse link

interference.

2.2.3 Enhanced Protocol DRC Channel Continuous Transmission Enabled (ENHDRCGATING)

Description: See section 2.2.2 Default Protocol DRC Channel Continuous

Transmission Enabled (DRCGATING).




Allowed Range: CONTINUOUS(YES), DISCONTINUOUS(NO)

Default Value: CONTINUOUS(YES)

Setting Tradeoff: See section 2.2.2 Default Protocol DRC Channel

Continuous Transmission Enabled (DRCGATING).

2.2.4 DSC Channel Gain (DSCChannelGain)

Description: This parameter indicates the power offset of the reverse DSC

channel relative to the reverse pilot channel. Based the number of

soft handoff legs, DSCChannelGain is divided into DSCCHGAIN1 to

DSCCHGAIN6, repectively corresponding to the power offsets when

the number of soft handoff legs is from 1 to 6.

Type: The protocol parameter of CDMA2000 1xEV-DO module level



Allowed Range: 0–31 (unit: –0.5 dB)

Default Value: 18 (It does not vary according to the number of soft handoff

legs.)



Setting Tradeoff: If the value is set too high, the reliability of DSC

transmission is higher, but the effect on the throughput of the reverse

link is greater. If the value is set too low, the effect on the throughput

of the reverse link is less, and the reliability of DRC transmission is

reduced.

2.2.5 ACK Channel Gain (ACKChannelGain)

Description: This parameter indicates the power offset of the reverse ACK

channel relative to the reverse pilot channel. Based the number of

soft handoff legs, ACKChannelGain is divided into ACKCHGAIN1 to

ACKCHGAIN6, repectively corresponding to the power offsets when

the number of soft handoff legs is from 1 to 6.





Default Value: 6 (3 dB)

Setting Tradeoff: When you set this parameter, try to minimize the

probability of ACK error and loss. Thus, the PER and forward

throughput are not obviously affected. If this parameter is set too high,

the reverse capacity is greatly affected.

2.2.6 DRCLength (DRCLEN1/2/3/4/5/6BRANCH)

Description: This parameter specifies the number of timeslots that the AT uses to transmit a single DRC value at soft handoff legs from 1 to 6. The system, according to the legs for the AT, determines the DRCLength value that is delivered to the AT. If the AT has sent DRC to sector A and specified request rate r over n timeslots, the AT should search prefix transmitted by sector A at rate r from n+1 timeslots to n+DRCLength timeslots. Table 2-2 shows the DRCLength coding.



Table 2-2 DRCLength coding




Allowed Range: 0–3

Default Value: 1 (2 timeslots) for one leg, 2 (4 timeslots) for more than one

leg

Setting Tradeoff: If this parameter is set too high, the transmission reliability the DRC value is higher. But the DRC change rate is lower, so the DRC change cannot keep pace with the change of the radio environment. If this parameter is set too low, the retransmission of the DRC value is reduced, and the transmission reliability of the DRC value is also reduced. But the DRC change rate is higher.

2.2.7 DRC Offset (DRCOFFSET)

Description: This parameter indicates the value of the offset parameter

corresponding to different DRCValue.




Allowed Range: Refer to Table 2-3.

Default Value: 0

Table 2-3 Allowed range and default value of DRC Offset

DRCOFFSET Allowed Range Default Value

DRCOffset1 0–1 0



DRCOffset2 0–3 0

DRCOffset3 0–3 0

DRCOffset4 0–7 0

DRCOffset5 0–7 0

DRCOffset6 0–7 0

DRCOffset7 0–7 0

DRCOffset8 0–15 0

DRCOffset9 0–15 0

DRCOffsetA 0–15 0

DRCOffsetB 0–15 0

DRCOffsetC 0–15 0

DRCOffsetD 0–15 0

DRCOffsetE 0–15 0

Setting Tradeoff: If this parameter is set too high, the forward throughput may be reduced because the choice of packet sizes the AN uses to transmit forward data is limited. If this parameter is set too low, the services whose PER at the physical layer is much less than 1% do not meet their QoS requirements.

Chapter 3 Access Parameters

3.1.1 Access Channel Probe Cycle (ACYCLEDURATION)

Description: The AT starts an access probe only when the system time T is a

multiple the access channel cycle. An access probe may begin only

at times T such that T mod AccessCycleDuration = 0, where T is the

system time in timeslots.


Command Line: Modify Command: MOD DOAPM

Search Command: LST DOAPM



Allowed Range: SLOT8(8 TIMESLOTS), SLOT16(16 TIMESLOTS),

SLOT32(32 TIMESLOTS), SLOT64(64 TIMESLOTS), SLOT128(128

TIMESLOTS) (unit: timeslots)

Default Value: SLOT64(64 TIMESLOTS)

Setting Tradeoff: If this parameter is set too low, the time for an access

probe is decreased, and the access channel capacity is increased.

But the access collision probability is increased, and the access

success rate is reduced.

3.1.2 Access Probe Preamble Frame Length (PRBLEN)

Description: This parameter indicates the number of frames in an access probe preamble. In an access probe, the pilot part (I-channel) is enabled and acts as a preamble. After PreambleLength frames, that is, PreambleLength x 16 timeslots, the data part (Q-channel) is enabled and reaches CapsuleLengthMax x 16 timeslots.

Figure 3-1 Access channel structure




Allowed Range: 1–7 (unit: frames)

Default Value: 2

Setting Tradeoff: If this parameter is set too high, the probability that the AN

detects access probes is increased. But the time of successful



access probes is increased, and the access channel capacity is

decreased. If this parameter is set too low, the AN may not be able to

reliably detect the access probes.

3.1.3 Max. Capsule Length of Access Channel (CAPSULELENMAX)

Description: This parameter indicates the maximum number of frames in an

access channel capsule.




Allowed Range: 2–7 (unit: frames)

Default Value: 2

Setting Tradeoff: If this parameter is set too low, the large access channel

message data capsule cannot be carried. But the access probe time

is reduced, and the access channel capacity is increased.

3.1.4 AT Open Loop Power Estimation (OLOOPADJUST)

Description: The AT uses this parameter to estimate the average open loop output power (X0) of the pilot channel during an access probe. X0 ranges from –6 dB to +6 dB and should range from –9 dB to +9 dB in the following formula:

X 0 = –Mean Received Power (dBm) + OpenLoopAdjust + ProbeInitialAdjust




Allowed Range: 0–255 (unit: –1 dB)

Default Value: 85

Setting Tradeoff: If this parameter is set too low, the open loop power

estimate is increased, and the time for a successful access of the AT

is reduced. But the reverse transmit power of the AT is higher,

causing unnecessary reverse interference for the system. If this



parameter is set too high, the AT must perform multiple access

probes before a successful access.

3.1.5 Open Loop Power Estimate Correction Factor (PRBINIADJUST)

Description: This parameter and the AT Open Loop Power Estimation

(OLOOPADJUST) are used to estimate the open loop mean output

power. Refer to section 3.1.4 AT Open Loop Power Estimation

(OLOOPADJUST).




Allowed Range: –16 to 15 (unit: dB)

Default Value: 0

Setting Tradeoff: If this parameter is set too high, the reverse capacity may

be affecting, causing great power redundancy. If this parameter is set

too low, the AT must perform multiple access probe before a

successful access, thus increasing the access time of the AT. This

may cause access failure.

3.1.6 Max. Access Probes (PRBNUMSTEP)

Description: This parameter indicates the maximum number of access probes in a single access probe sequence. Figure 3-2 shows the structure of an access probe sequence, where, Np refers to the maximum number of access probes in the probe sequence and Ns refers to the maximum number of probe sequences in an access attempt.

Figure 3-2 Structure of an access probe sequence






Allowed Range: 1–15 (unit: times)

Default Value: 15

Setting Tradeoff: If this parameter is set too high, the access failure due to poor reverse link can be improved. But for access failures caused by collision, the interference of the reverse link is increased, because the energy of the access probe is increased step by step. If the parameter is set too low, the interval for each access probe sequence is small. Thus, access failures due to collision can be improved.

3.1.7 Probe Power UP Step (PWRSTEP)

Description: This parameter indicates the increase in power between successive probes within the same sequence, in resolution of 0.5 dB. The AT transmits the pilot channel of the "i-th" probe in a single probe sequence at the power of X0 + (i-1) x PowerStep, in which "X0" indicates open loop mean output power of the AT pilot channel (X0 = –Mean RX power (dBm) + OpenLoopAdjust + ProbeInitialAdjust).




Allowed Range: 0–15 (unit: 0.5 dB)

Default Value: 6

Setting Tradeoff: Refer to section 3.1.6 Max. Access Probes

(PRBNUMSTEP).

3.1.8 Access Persistence Vector 0/1/2/3 (PERSISTENCE0/1/2/3)

Description: This parameter indicates the APersistence value used by the AT of types from 0 to 3 for the persistence test before sending the first probe in a probe sequence. The AT determines the persistence probability based on the APersistence value.






Allowed Range: Hexadecimal numerals with no more 2 digits. The maximum

is 0x3F, at which the access is forbidden.

Default Value: 0x00

Setting Tradeoff: If this parameter is set too high, the success rate of the persistence test is reduced, and the time for sending access probes is prolonged. But the probability of access probe collision is reduced. At the initial stage of network construction, the APersistence value must be set low to decrease the access duration because the access load is light. With the increase of the network load, the APersistence value must be increased to reduce access collision and ensure the access success rate.

3.1.9 Access Marco Diversity Switch (ACCMACRODIVSWITCH)

Description: This parameter determines whether to enable the access macro

diversity function.

Type: The internal parameter of module level

Command Line: Modify Command: MOD DORRMMP

Search Command: LST DORRMMP

Allowed Range: ON(ON), OFF(OFF)

Default Value: ON(ON)


3.1.10 Enhanced Access Parameters Included (ENHACCPARAIND)

Description: This parameter determines whether to support enhanced access

parameters.




Allowed Range: YES(INCLUDED), NO(NOINCLUDED)

Default Value: YES(INCLUDED)




3.1.11 Access Preamble Length (PREAMBLELENSLOT)

Description: This parameter indicates the length of the preamble in an access

probe.




Allowed Range: SLOT4(4TIMESSLOTS), SLOT16(16TIMESSLOTS) (unit:

timeslots)

Default Value: SLOT4(4TIMESSLOTS)

Setting Tradeoff: If this parameter is set too high, it is good for successful access of the AT, and the access time is reduced. But the reverse power consumption of the AT is increased, the reverse interference of the system is increased, and the reverse capacity of the system is decreased.

3.1.12 Max. Rate of Access Channel (SECTORACCMAXRATE)

Description: This parameter indicates the maximum transmission rate of the

sector access channel.




Allowed Range: KBPS96(9.6 KBPS), KBPS192(19.2 KBPS),

KBPS384(38.4 KBPS) (unit: kbps)

Default Value: 38.4

Setting Tradeoff: If this parameter is set too high, the data rate and access

speed of the access channel may be increased. If this parameter is

set too low, the data may be divided into multiple MACs for sending,

and the access time is prolonged.

3.1.13 Probe Timeout Adjustment (PROBETIMEOUTADJUST)

Description: This parameter is used to calculate the sending time of a probe

and adjust the duration of the ACK timer.






Allowed Range: SLOT4(OTIMESLOT), 16 SLOT16(16TIMESSLOTS), 32,

48, 64 (unit: timeslots)

Default Value: 0


3.1.14 Nominal Pilot Strength (PILOTSTRNOMINAL)

Description: This parameter indicates the reference value of the pilot strength

used by the AT for the open loop power estimate. The AT compares

the actual pilot strength with this reference value to determine the

open loop transmit power.





Default Value: 0

Setting Tradeoff: This parameter must correspond to the AT Open Loop Power Estimate and the Enhanced MAC Open Loop Power Estimate Correction Factor. If this parameter is set too high, the access power is higher, thus increasing the reverse load of the sector. If this parameter is set too low,

3.1.15 Max. Pilot Strength Correction (PILOTSTRCORTMAX)

Description: This parameter indicates the maximum pilot strength the AT can

adjust during open loop power estimate.




Allowed Range: 0 to 5 (unit: dB)

Default Value: 0



Setting Tradeoff: If this parameter is set too low, the open loop power estimate is insufficient when the pilot interference is increased. The access delay is increased, and an access failure may occur.

3.1.16 Min. Pilot Strength Correction (PILOTSTRCORTMIN)

Description: This parameter indicates the minimum pilot strength the AT can

adjust during open loop power estimate.




Allowed Range: -5 to 0 (unit: dB)

Default Value: 0

Setting Tradeoff: If this parameter is set too high, the open loop power estimate is too large when the pilot strength is reduced. The reverse interference is increased.

3.1.17 Default Protocol Max. Access Probe Sequences in a Single AT Access Probe (PRBSEQMAX)

Description: This parameter indicates the maximum number of access probe sequences in a single access probe of the AT by the default protocol. Figure 3-3 shows the structure of an access probe sequence, where, Np refers to the maximum number of access probes in the probe sequence and Ns refers to the maximum number of probe sequences in an access attempt.

Figure 3-3 Structure of an access probe sequence


Command Line: Modify Command:





Default Value: 3

Setting Tradeoff: If this parameter is set too high, the access success rate may be increased. But the access channel capacity may be affected. If this parameter is set too low, that is, it is set to 1, there is no chance for retransmitting the sequence. Because the radio environment is easy to fluctuate, if the first access failed, the radio environment may become better for the second sequence.

3.1.18 Default Protocol Backoff Between Probes (PRBBKOFF)

Description: This parameter indicates the backoff between the access probes of the AT by the default protocol. It is used to calculate the start time of the next access probe.




Allowed Range: 0–15 (unit: AccessCycleDuration)

Default Value: 4

Setting Tradeoff: If this parameter is set too high, the AT access may be delayed when there are many access probes at a time. But the access load is reduced. If this parameter is set too low, the probability of access probe collision is increased when the system load is heavy.

3.1.19 Default Protocol Backoff Between Probe Sequences (PRBSEQBKOFF)

Description: This parameter indicates the backoff between the access probe sequences of the AT by the default protocol. It is used to calculate the start time of the next access probe sequence.





Default Value: 4



Setting Tradeoff: Refer to section 3.1.18 Default Protocol Backoff Between

Probes (PRBBKOFF).

3.1.20 Nominal Power Offset of Access Channel (ACCDATAOFF)

Description: This parameter and the AT Open Loop Power Estimation (OLOOPADJUST) are used to estimate the open loop mean output power. Refer to section 3.1.4 AT Open Loop Power Estimation (OLOOPADJUST).





Default Value: 0

Setting Tradeoff: If this parameter is set too high, it is good for successful access of the AT, and the access time is reduced. But the reverse power consumption of the AT is increased, the reverse interference of the system is increased, and the reverse capacity of the system is decreased.

3.1.21 Enhanced Protocol Max. Access Probe Sequences in a Single AT Access Probe (ENHPRBSEQMAX)

Description: This parameter indicates the maximum number of access probe

sequences in a single access probe of the AT by the enhanced

protocol.





Default Value: 3

Setting Tradeoff: Refer to section 3.1.17 Default Protocol Max. Access

Probe Sequences in a Single AT Access Probe (PRBSEQMAX).



3.1.22 Enhanced Protocol Backoff Between Probes (ENHPRBBKOFF)

Description: This parameter indicates the backoff between the access probes of the AT by the enhanced protocol. It is used to calculate the start time of the next access probe.





Default Value: 4


Probes (PRBBKOFF).

3.1.23 Enhanced Protocol Backoff Between Probe Sequences (ENHPRBSEQBKOFF)

Description: This parameter indicates the backoff between the access probe sequences of the AT by the enhanced protocol. It is used to calculate the start time of the next access probe sequence.





Default Value: 4


Probe Sequences (PRBSEQBKOFF).



Chapter 4 Admission Control Parameters

4.1 Forward Admission Control Parameters

4.1.1 Admission Control High Priority Preemption Switch (ACCCTRLINVDSW)

Description: This parameter determines whether to allow the flow with high priority to preempt the resources of the flow with low priority when the admission control is enabled.

Type: The internal algorithm parameter of sector carrier level

Command Line: Modify Command: MOD DOAFLCP

Search Command: LST DORRMP




4.1.2 Max. Private Line Subscribers on a Carrier (MAXVIPNUM)

Description: This parameter indicates the maximum number of private line

subscribers on a carrier.




Allowed Range: 1–114 (unit: subscribers)

Default Value: 10

Setting Tradeoff: If this parameter is set too high, the throughput of other

non-private line subscribers is seriously affected, and the system

performance is also affected.

4.1.3 Max. EF Flow Bandwidth (MAXEFFLOWBW)

Description: In the case of admission control, the total bandwidth seized by all

the EF flows cannot exceed the maximum bandwidth of the EF flow.






Allowed Range: 0–3100000 (unit: bps)

Default Value: 2150400

Setting Tradeoff: If this parameter is set too low, the QoS satisfaction of subscribers is affected. If the system has available bandwidth, it is a waste of the bandwidth. If this parameter is set too high, the admission control function is weakened, thus affecting the QoS satisfaction of subscribers. If the maximum bandwidth of the EF flow is set to a maximum value, the admission control based on the static bandwidth is disabled. This parameter is used for admission control of the FE flow.

4.1.4 Max. EF and AE Flow Bandwidth (MAXEFAFFLOWBW)

Description: In the case of admission control, the total bandwidth seized by all the EF and AF flows cannot exceed the maximum bandwidth of the EF flow.




Allowed Range: 0–3100000 (unit: bps)

Default Value: 2150400.00

Setting Tradeoff: If this parameter is set too low, the QoS satisfaction of subscribers is affected. If the system has available bandwidth, it is a waste of the bandwidth. If this parameter is set too high, the admission control function is weakened, thus affecting the QoS satisfaction of subscribers.

4.1.5 Max. Timeslot Usage of EF Flow (MAXEFSLTOCCU)

Description: In the case of admission control, the total timeslots seized by the EF flows cannot exceed the maximum timeslot usage of the EF flow in the measurement period.




Allowed Range: 0–10000 (unit: 0.01%)

Default Value: 7000, that is, 70%

Setting Tradeoff: If this parameter is set too low, the subscriber admission is excessively controlled. This wastes system resources and affects the QoS



satisfaction of subscribers and the system throughput. If this parameter is set too high, the admission control function is weakened, thus affecting the QoS satisfaction of subscribers. If this parameter is set to a maximum value, the admission control based on timeslot usage is disabled.

4.1.6 Max. Timeslot Usage of EF and AF Flows (MAXEFAFSLTOCCU)

Description: In the case of admission control, the total timeslots seized by the EF and AF flows cannot exceed the maximum timeslot usage of the EF and AF flows in the measurement period.




Allowed Range: 0–10000 (unit: 0.01%)

Default Value: 7000, that is, 70%

Setting Tradeoff: If this parameter is set too low, the subscriber admission is

excessively controlled. This wastes system resources and affects the

QoS satisfaction of subscribers and the system throughput. If this

parameter is set too high, the admission control function is weakened,

thus affecting the QoS satisfaction of subscribers. If this parameter is

set to a maximum value, the admission control based on timeslot

usage is disabled.

4.2 Other Admission Control Parameters

4.2.1 Max. Subscribers on a Carrier (MAX_CHAN_NUM)

Description: This parameter indicates the maximum number of subscribers that

can be accessed by the carrier simultaneously.


Command Line: Modify Command: MOD DOSP


Allowed Range: 0–114 (unit: subscribers)

Default Value: 61



Setting Tradeoff: If this parameter is set too high, the number of subscribers

that can be accessed by the system is increased. But the

transmission performance of a single subscriber is degraded.

4.2.2 RAB Length (RAB_LENGTH)

Description: This parameter indicates the number of timeslots used for sending

the reverse active bit (RAB). This parameter is sent in the

RABLength field in the TrafficChannelAssignment Message.




Allowed Range: 8, 16, 32, 64 (unit: timeslots)

Default Value: 8

Setting Tradeoff: The RAB Length value must ensure that the AT at the

border can decode the RA channel correctly. If the value is set too high,

the rate control period is long. The system load and the change of

radio links cannot be reported in time.

4.2.3 RAB Offset (RAB_OFFSET)

Description: This parameter and the RAB Length (RAB_LENGTH) determine

the timeslot for sending the RAB. The sending timeslot of the AT is

RABOffset x RABLength/8. This parameter is sent in the RABOffset

field in the TrafficChannelAssignment Message.





Default Value: Different values are allocated for adjacent sectors. The default

value is 0.



Setting Tradeoff: If this parameter is set too low, the system stability is

affected. If this parameter is set too high, the RAB update is very slow.

Thus the admission control function does not take effect.

Chapter 5 Handoff Parameters

5.1 Pilot Set Decision

5.1.1 Pilot Good Available Threshold (PILOTADD)

Description: If the strength of a pilot reaches this parameter value, the pilot

can be added to the active set. If the strength of the pilots in a

neighbor set or in a remaining set reaches this parameter value when

AT is in Connection state, a RouteUpdate message is sent.





Default Value: –14

Setting Tradeoff: If this parameter is set too high, the soft handoff ratio is

reduced. The soft handoff, however, may be delayed. Therefore,

some areas that cannot be covered may exist. If this parameter is set

too low, the soft handoff threshold decreases. This increases the soft

handoff area and the soft handoff ratio.

5.1.2 Pilot Compare Threshold (PILOTCMP)

Description: This parameter indicates the compare threshold between the

active set and the candidate set. When the strength of a candidate

set is greater than this parameter value in an active set pilot, the AT

sends a RouteUpdate message.







Default Value: 5

Setting Tradeoff: If this parameter is set too low, ping-pong handoffs easily

occur. If this parameter is set too high, the AT is unable to obtain

services on the optimum pilot in time.

5.1.3 Pilot Drop Threshold (PILOTDROP)

Description: When the strength of a pilot in the active set or in the candidate

set is less than this parameter value, the AT shall start a pilot drop

timer.






Setting Tradeoff: If this parameter is set too high, an available signal can be

easily deleted from the active set. If this parameter is set too low, it is

difficult to delete the pilot with low strength from the active set.

5.1.4 Pilot Drop Timer Length (PILOTDROPTIMER)

Description: When the strength of a pilot in the active set or in the candidate

set is lower than the value of PILOTDROP, the AT starts the pilot drop

timer based on this parameter value.




Allowed Range: S0(0.1SECOND)–S15(319SECONDS) (unit: second)

Table 5-1 lists the coding mode of the PilotDropTimer.



Table 5-1 PilotDropTimer coding mode

PilotDropTimer Timer Expires (second)

PilotDropTimer Timer Expires (second)

0 <0.1 8 27

1 1 9 39

2 2 10 55

3 4 11 79

4 6 12 112

5 9 13 159

6 13 14 225

7 19 15 319

Default Value: S3(4SECONDS)

Setting Tradeoff: If this parameter is set too high, the pilot with low strength

in the active set stays in the active set for a long time, thus wasting

the forward traffic channel resources. If this parameter is set too low,

when the strength of a pilot in the active set fluctuates, this pilot is

easily removed from the active set, causing frequent handoffs.

5.1.5 Max. Branch Number for Active Set (HOMAXBRANCHNUM)

Description: This parameter indicates the maximum number of branches in

the soft handoff target active set.

Type: The internal parameter of module level

Command Line: Modify Command: MOD DORRMMP

Search Command: LST DORRMMP

Allowed Range: 2–6 (unit: branches)

Default Value: 3

Setting Tradeoff: If this parameter is set too high, the transmission

performance of a single AT reverse link is improved. But the number

of subscribers that the sector reverse link can support is reduced. If



this parameter is set too low, the transmission performance of a

single AT reverse link is degraded. But the number of subscribers

that the sector reverse link can support is increased.

5.1.6 Neighbor Set Max. AGE (NBRMAXAGE)

Description: This parameter defines the maximum life duration of pilots in the

neighbor set. The AT has a counter for each pilot in the neighbor set.

When the AT receives a Neighbor List Update Message (NLUM), the

AT shall increment the counters of the original pilots in the neighbor

set by 1. If the counter of a pilot exceeds this parameter value, the AT

shall remove this pilot from the neighbor set.





Default Value: 0

Setting Tradeoff: If this parameter is set too high, a pilot that drops from the

active set or candidate set can stay a longer time in the neighbor set.

If this parameter is set to 0, each time the AT receives the NLUM, the

AT takes the neighbor pilot list in the NLUM for a new pilot neighbor

set. If there are many neighbor cells, set the parameter to 0. This

ensures that AT always uses the neighbor pilot contents of the latest

NLUM delivered by the BSC.

5.2 Configuration Negotiation

5.2.1 Search Window Size for Active Set and Candidate Set (SRCHWINA)

Description: This parameter specifies the search window size for the active

set and candidate set. When an AT searches pilots in the active and

candidate sets, the AT should center the search window around the

earliest usable multipath component for pilots in the active and

candidate sets. Therefore, this parameter is related only to the



multipath of pilots, instead of the relative propagation delay between

pilots.





Table 5-2 lists the mapping between the coding mode and the search

window size.

Table 5-2 Search window sizes

SearchWindowsSize Value

Search Window Size (PN Chips)

0 4

1 6

2 8

3 10

4 14

5 20

6 28

7 40

8 60

9 80

10 100

11 130

12 160

13 226

14 320

15 452



Default Value: 8, that is, 60 chips

Setting Tradeoff: If this parameter is set too low, some useful signals in the

active set may be excluded in the search window, and the link quality

may be affected. If this parameter is set too high, some irrelevant

signals (PN confusion) may be included in the search window, and a

large search window slows down neighbor pilots searching by the AT,

thus affecting the system performance.

5.2.2 Search Window Size for Neighbor Set (SRCHWINN)

Description: The AT uses the search window size to search for carriers in the

neighbor set.






Setting Tradeoff: If this parameter is set too high, the AT needs more time

for searching. If this parameter is set too low, the pilot branches may

be lost.

5.2.3 Search Window Size for Remaining Set (SRCHWINR)

Description: This parameter specifies the search window size for the

remaining set. The AT uses the search window size to search for

carriers in the remaining set.






Setting Tradeoff: If this parameter is set too low, some useful pilots in the

remaining set may be missed. If this parameter is set too high, the AT



needs more time to search pilots in the remaining set. This slows

down the search speed of the AT.

5.3 Soft Handoff

5.3.1 Soft Handoff Delay (SFTHODLY)

Description: The AN shall set this parameter to the minimum interruption that

the AT expects when the AT switches the DRC from a source sector

to a target sector during a soft handoff.




Allowed Range: 0–255 (unit: 8 timeslot)

Default Value: 16, that is, 128 timeslots

Setting Tradeoff: It is recommended that the value should be greater than DRCLock Interval + 1. The DRCLock Interval is equal to the DRCLockPeriod*DRCLockLength.

5.3.2 Softer Handoff Delay (SFTERHODLY)

Description: The AN shall set this parameter to the minimum interruption that

the AT expects when the AT switches the DRC from a source sector

to a target sector during a softer handoff.


Command Line: Modify Command: MOD DOMCNP

Search Command: LST DOMCNP

Allowed Range: 0–255 (unit: 8 timeslot)

Default Value: 1, that is, 8 timeslots

Setting Tradeoff: If this parameter is set too high, the forward transmission

may be interrupted for a long time. If this parameter is set too low, the

target serving sector starts sending data when the source serving

sector does not stop sending data, thus causing data overlap.



5.4 Same-frequency Neighbor Handoff Parameters

5.4.1 Search Window Size of Neighbor Set Branch Included (NSRCHWININC)

Description: This parameter specifies whether the neighbor sector list

message includes the search window size for the neighbor set.


Command Line: Modify Command: MOD DONBRPARA

Search Command: LST DONBRPARA

Allowed Range: YES, NO

Default Value: NO


5.4.2 Search Window Size of Neighbor Set Branch (NSRCHWINSIZE)

Description: This parameter specifies the search window size for the

neighbor set branch. The search window size involves the range of

the PN code determined by Same-frequency Neighbor Carrier.




Allowed Range: 0–15 (The maintenance console lists the optional chip

quantities in tables.)


Setting Tradeoff: If this parameter is set too low, the pilot signals may be lost.

As a result, the pilot signals cannot be added to the active set and

soft handoff fails. If this parameter is set too high, the AT needs more

time to search for each neighbor pilot, slowing down the speed of

searching neighbor pilots. As a result, the soft handoff is delayed.



5.4.3 Search Window Offset of Neighbor Set Branch Included (NSRCHWINOFFSETINC)

Description: This parameter specifies whether the neighbor sector list

message includes the search window offset for the neighbor set

branch.




Allowed Range: YES, NO

Default Value: NO


5.4.4 Search Window Offset of Neighbor Set Branch (NSRCHWINOFFSET)

Description: This parameter specifies the search window offset of the PN

code determined by Same-frequency Neighbor Carrier.




Allowed Range: 0–7 (The maintenance console lists all the Offset values in

tables.)

Table 5-3 lists the mapping between the value of Um interface

message and the search window offset.

Table 5-3 Search window offset coding

SearchWindowsOffset Offset (PN Chips)

0 0

1 WindowSize26/2

2 WindowSize

3 3*WindowSize/2



4 -WindowSize/2

5 -WindowSize

6 -3*WindowSize/2

7 Spare

Default Value: 0


5.5 Intra-AN Hard Handoff

5.5.1 Intra-AN Hard Handoff Macro Diversity Switch (INTRAANHHOMACRODIVSW)

Description: This parameter specifies whether the intra-AN hard handoff

macro diversity is allowed, that is, whether multiple hard handoff

targets are allowed during hard handoff of the calls on this module.

Type: The parameter of module level

Command Line: Modify Command: MOD DOHHORTD

Search Command: LST DFNBRPARA




5.5.2 EV-DO RTD Hard Handoff Switch (RTDDOHHOSW)

Description: This parameter specifies whether to perform CDMA2000

1xEV-DO RTD hard handoff.

Type: The parameter of sector carrier level

Command Line: Modify Command: MOD DOPHOALG



Default Value: OFF(OFF)




5.5.3 EV-DO DRC Hard Handoff Switch (DRCDOHHOSW)


1xEV-DO DRC hard handoff.







5.5.4 EV-DO Link Quality Hard Handoff Switch (LNKDOHHOSW)


1xEV-DO link quality hard handoff.







Chapter 6 Forward QoS Parameters of the Air

Interface

6.1.1 Flow Group Identification (FLOWGRPID)

Description: This parameter indicates the identification of the service group

(primary key).

Type: The parameter of system level



Command Line: Modify Command: MOD DOFSP

Search Command: LST DOFSP

Allowed Range: RTAUDIO (Real-Time Voice Services), MEDIASIGN

(Media Control Signal), RTVIDEO (Real-Time Video Services),

RTGAME (Interactive Services), STREAM (Streaming

Services), BE (Best Effort Services), TESTAPP (Test

Application), UMSIGN (Um Signal)

Default Value: See Table 6-1.




Table 6-1 Default value of QoS parameters

Subscriber Level

Flow Group ID

Flow Type

Initial Level

Border Delay

Delay Threshold 1

Delay Threshold

2

Delay Level

1

Delay Level

2

TS Flow Schedul

ing Weight

DS Flow Scheduli

ng Weight

BE Flow Combination

Index

BE Flow Combination

Priority

DRC Erasure Delay

Threshold

Forward DARQ

Enabled

BRONZE

RTVOICE (real-time voice service)

DS 5 0 0 0 5 5 1 0 0 0 0 1

BRONZE

MEDIASIGN (media control signaling)

DS 4 0 0 0 4 4 1 0 0 0 0 1

BRONZE

RTVIDEO (real-time video service)

DS 3 0 0 0 3 3 1 0 0 0 0 1

BRONZE

RTGAME (real-time interactive game service)

DS 2 0 0 0 2 2 1 0 0 0 0 1



BRONZE STREAM (stream service)

TS 1 0 0 0 1 1 1 0 0 0 0 1

BRONZE

BE (best-effort forwarding service)

TS 0 0 0 0 0 0 1 0 0 0 0 1

SILVER


DS 5 0 0 0 5 5 1 50 0 0 0 1

SILVER


DS 4 0 0 0 4 4 1 50 0 0 0 1

SILVER


DS 3 0 0 0 3 3 1 50 0 0 0 1

SILVER

RTGAME (real-time interactive game

DS 2 0 0 0 2 2 1 50 0 0 0 1



service)

SILVER STREAM (stream service)

TS 1 0 0 0 1 1 10 0 0 0 0 1

SILVER


TS 0 0 0 0 0 0 10 0 0 0 0 1

GOLD


DS 5 0 0 0 5 5 1 100 0 0 0 1

GOLD


DS 4 0 0 0 4 4 1 100 0 0 0 1

GOLD


DS 3 0 0 0 3 3 1 100 0 0 0 1



GOLD


DS 2 0 0 0 2 2 1 100 0 0 0 1

GOLD STREAM (stream service)

TS 1 0 0 0 1 1 100 0 0 0 0 1

GOLD


TS 0 0 0 0 0 0 100 0 0 0 0 1

LINE


DS 6 0 0 0 6 6 1 100 0 0 0 1

LINE


DS 6 0 0 0 6 6 1 80 0 0 0 1

LINE RTVIDEO (real-time video

DS 6 0 0 0 6 6 1 60 0 0 0 1



service)

LINE


DS 6 0 0 0 6 6 1 40 0 0 0 1

LINE STREAM (stream service)

TS 6 0 0 0 6 6 1 20 0 0 0 1

LINE


TS 6 0 0 0 6 6 1 0 0 0 0 1



6.1.2 Subscriber Level (USERGRADE)

Description: This parameter indicates the level of subscribers (primary key).




Allowed Range: BRONZE (Bronze Subscriber), SILVER (Silver Subscriber),

GOLD (Gold Subscriber), LINE (Private Line Subscriber)



6.1.3 QoS Category (QOSCATEG)

Description: This parameter specifies whether the flow is sensitive to the

delay or the throughput.




Allowed Range: TS(Throughput Sensitive), DS(Delay Sensitive)



6.1.4 Initial Level (METRICSTATE)

Description: This parameter specifies the initial scheduling level of each flow.









6.1.5 TS Flow Scheduling Weight (GOSFACTOR)

Description: This parameter specifies the scheduling weight of the

delay-sensitive flow.






Setting Tradeoff: This parameter indicates the scheduling priority of this type

of service. If this parameter is set too high, the TS service is more

easily scheduled.

6.1.6 DS Flow Scheduling Weight (ACCLRTOFFSET)

Description: This parameter specifies the scheduling weight of the

throughput-sensitive flow.






Setting Tradeoff: This parameter indicates the scheduling priority of this type

of service. If this parameter is set too high, the DS service is more

easily scheduled.

6.1.7 Forward DARQ Enabled (FWDDARQENABLED)

Description: This parameter specifies whether the forward Delay Auto

Retransmission Request is allowed.






Allowed Range: NO (Disabled), YES (Enabled)



6.1.8 Subscriber Level (USERGRADE)

Description: This parameter indicates the level of the private line subscribers.


Command Line: Modify Command: MOD DOAQOS

Search Command: LST DOAQOS

Allowed Range: LINE1(Private Line Subscriber 1), LINE2 (Private Line

Subscriber 2), LINE3 (Private Line Subscriber 3)

Default Value: None.


6.1.9 Forward Limited Rate (FWDLMTRATE)

Description: This parameter indicates the forward limited rate (physical layer

rate) of the private line subscribers.




Allowed Range: RATE9K6 (9.6kbps), RATE19K2 (19.2kbps), RATE38K4

(38.4kbps), RATE76K88(76.8kbps), RATE153K6 (153.6kbps),

RATE307K2 (307.2kbps), RATE614K4 (614.4kbps)


Setting Tradeoff: This parameter limits the forward rate of all private line

subscribers. The parameter setting is related to the operation policy.

6.1.10 Reverse Limited Rate (REVLMTRATE)

Description: This parameter indicates the reverse limited rate (physical layer

rate) of the private line subscribers.






Allowed Range: RATE9K6 (9.6kbps), RATE19K2 (19.2kbps), RATE38K4

(38.4kbps), RATE76K88(76.8kbps), RATE153K6 (153.6kbps),

RATE307K2 (307.2kbps), RATE614K4 (614.4kbps)


Setting Tradeoff: This parameter limits the reverse rate of all private line

subscribers. The parameter setting is related to the operation policy.

6.1.11 Forward NAK Enabled (NAKENFWD)

Description: This parameter specifies whether the forward flow needs the

RLP to send NAK to request for retransmission.


Command Line: Modify Command: MOD DOEMPA / MOD DOMPA

Search Command: LST DOEMPA / MOD DOMPA

Allowed Range: ON (Enable), OFF (Disable)


Setting Tradeoff: If retransmission is required, the RLP receiving end sends

NAK to the transmitting end to request for retransmission when

detecting any cavity. Otherwise, the RLP receiving end does not

sends NAK. For real-time services such as VOIP, if the

retransmission delay exceeds a specified value, the quality is

deteriorated the same as non-retransmission.

Table 6-2 Default value of DOEMPA parameters

Flow group ID

RTVOICE (real-time

voice service)

MEDIASIGN (media control

signaling)

RTVIDEO (real-time

video service)

RTGAME (real-time interactive

game service)

STREAM (stream service)

Forward NAK Enabled OFF ON OFF ON ON



Reverse NAK Enabled OFF ON OFF ON ON

Reverse Physical Layer NAK Enabled

OFF ON ON ON ON

Forward RLP Sequence Number Length

BIT6 BIT14 BIT22 BIT22 BIT22

Reverse RLP Sequence Number Length

BIT6 BIT14 BIT22 BIT22 BIT22

Forward Stream Protocol Service Data Unit Format

PF(packet stream)

BF(byte stream)

BF(byte stream)

BF(byte stream)

BF(byte stream)

Reverse Stream Protocol Service Data Unit Format

PF(packet stream)

BF(byte stream)

BF(byte stream)

BF(byte stream)

BF(byte stream)

Forward Data Unit Format

PF(packet stream)

BF(byte stream)

BF(byte stream)

BF(byte stream)

BF(byte stream)

Reverse Data Unit Format

PF(packet stream)

BF(byte stream)

BF(byte stream)

BF(byte stream)

BF(byte stream)

Forward Routing Protocol Data Service Unit Format

PF(packet stream)

BF(byte stream)

BF(byte stream)

BF(byte stream)

BF(byte stream)

Reverse Routing Protocol Data Service Unit Format

PF(packet stream)

BF(byte stream)

BF(byte stream)

BF(byte stream)

BF(byte stream)

Forward Abort Timer Length

0 500 500 500 500

Reverse Abort Timer Length

0 500 500 500 500

Forward Flush Timer Length

0 300 300 300 300

Reverse Flush Timer Length

0 300 300 300 300

Forward Stream PRTCL4 PRTCL1 PRTCL1 PRTCL1 PRTCL1



Protocol Type

Reverse Stream Protocol Type

PRTCL4 PRTCL1 PRTCL1 PRTCL1 PRTCL1

Forward Support Disorder Sending

ON OFF OFF OFF OFF

Reverse DOS Enabled ON ON ON ON ON

Reservation Idle State 1 0 0 0 0

6.1.12 Reverse NAK Enabled (NAKENREV)

Description: This parameter specifies whether the reverse flow needs the

RLP to send NAK to request for retransmission.






Setting Tradeoff: Refer to section 6.1.11 Forward NAK Enabled

(NAKENFWD).

6.1.13 Reverse Physical Layer NAK Enabled (PLAYERNAKENREV)

Description: This parameter specifies whether the MAC layer ARQ of the AT

is enabled.








Setting Tradeoff: If this parameter is set to ON, the MAC ARQ of the AT is

enabled. This improves the upper layer throughput and delay

performance. But this reduces the data rate of the air interface.

6.1.14 Forward Abort Timer Length (ABORTTIMERFWD)

Description: If the Forward NAK Enabled is set to ON, the RLP receiving

end of the AT starts the forward Abort timer when detecting that data

is lost. If the RLP does not receive the data that need to be

retransmitted in the specified duration of the Abort timer, the RLP

considers that the retransmission request failed.



Search Command: LST DOEMPA / LST DOMPA

Allowed Range: 0–500 (unit: ms)


Setting Tradeoff: The parameter setting must be consistent with the upper

layer protocol and application. Otherwise, the harmony of the upper

layer protocol and application is affected. For delay-sensitive

services and unreliable application, this parameter shall be set to a

minimum value to satisfy the delay requirement of the upper layer

application. If the delay requirement is not satisfied, more packets

are discarded. For delay insensitive services and reliable application,

this parameter shall be set to a maximum value to maintain the

reliability of the connections. But the retransmission performance of

the upper layer can be guaranteed when this parameter is set too

low.

6.1.15 Reverse Abort Timer Length (ABORTTIMERREV)

Description: If the Reverse NAK Enabled is set to ON, the RLP receiving

end of the AT starts the reverse Abort timer when detecting that data

is lost. If the RLP does not receive the data that need to be



retransmitted in the specified duration of the Abort timer, the RLP

considers that the retransmission request failed.






Setting Tradeoff: Refer to section 6.1.14 Forward Abort Timer Length

(ABORTTIMERFWD).

6.1.16 Forward Flush Timer Length (FLUSHTIMERFWD)

Description: When the Forward NAK Enabled is set to ON, the RLP

transmitting end of the AN starts the Flush timer after the data is

transmitted. If the RLP transmitting end does not transmit data in the

specified duration of the Flush timer, the RLP transmitting end

retransmits a data packet that contains the last byte of the

transmitted data. The parameter value must less than or equal to the

value of the Forward Abort Timer Length.






Setting Tradeoff: The parameter setting must be consistent with the upper

layer protocol and application. Otherwise, the harmony of the upper

layer protocol and application is affected. For delay-sensitive

services and unreliable application, this parameter shall be set to a

minimum value to satisfy the delay requirement of the upper layer

application. If the delay requirement is not satisfied, more packets

are discarded. For delay insensitive services and reliable application,

this parameter shall be set to a maximum value to maintain the



reliability of the connections. But the retransmission performance of

the upper layer can be guaranteed when this parameter is set too

low.

6.1.17 Reverse Flush Timer Length (FLUSHTIMERREV)

Description: When the Reverse NAK Enabled is set to ON, the RLP

transmitting end of the AT starts the Flush timer after the data is

transmitted. If the RLP transmitting end does not transmit data in the

specified duration of the Flush timer, the RLP transmitting end

retransmits a data packet that contains the last byte of the

transmitted data. The parameter value must less than or equal to the

value of the Reverse Abort Timer Length.






Setting Tradeoff: Refer to section 6.1.16 Forward Flush Timer Length

(FLUSHTIMERFWD) for details.

6.1.18 Reverse DOS Enabled (DATADOSALLOWREV)

Description: This parameter specifies whether to enable the reverse DOS.






Setting Tradeoff: If this parameter is set to ON, the signaling bearer data

protocol is enabled. If this parameter is set to OFF, the signaling

bearer data protocol is disabled.



6.1.19 Reservation Idle State (RSVTIDLESTATE)

Description: This parameter indicates that the Reservation is in idle state.




Allowed Range: 0, 1, 2


Setting Tradeoff: When this parameter is set to 0, it is an indication that the

Reservation state is not related to the main connection state. If this

parameter is set to 1, it is an indication that the Reservation state is

deactivated when the main connection is deactivated. If this

parameter is set to 2, it is an indication that the Reservation state is

deactivated when the main connection is deactivated and that the

Reservation state is activated when the main connection is activated.

When this parameter is set to 1 or 2, the delay from the Reservation

Closed state when the Reservation is enabled to new

Reservations generation is eliminated. But the available

resources of other subscribers are reduced.

Chapter 7 Reverse QoS Parameters of the Air

Interface

7.1 General Parameter Table of RL MAC

ARQMode(ARQMODE)

Description: ARQMode. The ARQMode is a 1-bit value that indicates

the modulation (Bi-Polar (+1 implies ACK and .1 implies

NAK) Keying or ACK-oriented ON-OFF (+1 implies ACK and

0 implies NAK) Keying) of the H-ARQ bit if it is transmitted

after the first, second, or third sub-packet of a reverse link



physical layer packet by a sector that is part of the serving

cell.

TYPE: BSC level

Command Line:

Modify CMD: MOD RLMACGP

List CMD: LST RLMACGP


Default Value: 0 means(Bi-Polar (+1 implies ACK and .1 implies NAK))

Setting Tradeoff:

Setting Tradeoff: Bipolar Keying requires allocation of more power

to the Ack channel, but offers higher decoding reliability. On/Off

Keying requires less Ack channel power but with lower decoding

reliability, so for a given SINR, Bipolar Keying is more reliable than

On/Off keying.

FRABFilterTC(FRABFLTRTC)

Description: Filtered Reverse Activity Bit Filter Time Constant is the

Infinite Impulse Response (IIR) filter time constant the

access terminal uses for computing the Filtered RA Bit. It is a

method by which continuous averaging is performed on

streaming values of RAB over a specified window of RAB

samples. The time constant in this case corresponds to the

duration over which the filter collects RAB samples to be

included in the averaging process in addition to the average

calculated in the previous averaging window. This value is

used to estimate the long term traffic activity on a given

sector.

Type: The parameter of BSC level

Command Line: Modify Command: MOD RLMACGP

Search Command: LST RLMACGP

Allowed Range: SLOT128, SLOT256, SLOT384, SLOT512




Setting Tradeoff: If the time constant is set low then the averaging would be

more prone to sudden spikes (increases) in loading making the

average less representative of the long term sector activity. This

may increase the number of busy reports for a smaller number of

busy event occurrences. If the time constant is set too long then the

average may be too smooth and variations in the RAB may be

underestimated. With underestimated FRAB, reports of busy

conditions are less frequent and RTCMAC may allow an AT to

transmit at levels that may cause large variations in the ROT.

PilotStrengthFilterTC(PSFLTRTC)

Description: PilotStrengthFilterTC. Pilot Strength Filter Time Constant

is the IIR filter time constant the AT uses for computing the

filtered pilot strength, PilotStrengthn,s for sector s in the AT’s

active set.




Allowed Range: SLOT32, SLOT64, SLOT128


Setting Tradeoff: If set too low, the averaging is more prone to spikes

resulting in the QRAB being more likely to be detected as busy. If set

too high, the averaging becomes too smooth resulting in the QRAB



to be more likely to be detected as not busy and may result in

excess interference in the system.

QRABFilterTC(QRABFLTRTC)

Description: QRABFilterTC. Quick Reverse Activity Bit Filter Time

Constant is the IIR filter time constant the access terminal

uses for computing the Quick RA bit.




Allowed Range: SLOT4, SLOT8


Setting Tradeoff: If set too low, the averaging is more prone to spikes

resulting in the QRAB being more likely to be detected as busy. If set

too high, the averaging becomes too smooth resulting in the QRAB to

be more likely to be detected as not busy and may result in excess

interference in the system.



T2PNoTxFilterTC(T2PNOTXFLTRTC)

Description: T2PNoTxFilterTC. Filter time constant used to compute

the average T2P when the access terminal is in the Open state,

but not transmitting on the Reverse Traffic Channel due to not

receiving the corresponding Forward Channel. This is typical

of hybrid mode operation.




Allowed Range: SUBFRAME16, SUBFRAME24, SUBFRAME32,

SUBFRAME64, SUBFRAME128

Default Value: SUBFRAME24

Setting Tradeoff: If this parameter is set to a long time constant, then the

T2PInflow value decays less during a 1x tuneaway, and comes back

to EV-DO mode with a more aggressive transmit power. In an

unloaded sector, the AT’s T2PInflow upon returning from a

tune-away will be at a similar level compared that before the

tune-away. This will allow the AT to transmit using higher payload

sizes, and may increase the instantaneous throughput of that AT

after returning from the tune-away.

If this parameter was set to a short time constant, then the

T2PInflow decays more during a tune-away and the AT comes back

with a less aggressive transmit power. This may cause excess delay

in the ramping of payload sizes transmitted on the Reverse Link.

The positive side is this would allow smoother variations in the

Rise-over-Thermal in the system after the AT returns from a

tune-away.

The reason to not make the time constant long is that there is a

potential that channel conditions and sector loading may change

some while the AT is tuned away. Once the AT comes back, power



control runs to compensate for the channel state, and RAB runs to

compensate for loading changes. This constant helps avert the

possibility of an AT returning from a tuneaway transmitting at a higher

than necessary power causing excess interference to other AT’s in

the system.

FRABlow(FRABTHRLD)

Description: FRABlow. Filtered Reverse Activity Bit Low is the low end

threshold for FRAB such that FRAB values below FRABlow

indicate a sector with a lightly loaded reverse link. This

parameter is used to determine the conditions at which the

network may be characterized as being not busy. This is

typically used to control the merging of heterogeneous flows

(in terms of Transmission Mode) into the same physical layer

packet.




Allowed Range: FRAB02(-0.2), FRAB04(-0.4), FRAB06(-0.6), FRAB08(-0.8),

FRAB1(-1)

Default Value: FRAB08(-0.8)

Setting Tradeoff: If set too high, higher data rates are more likely achievable,

but HiCap flows may utilize excess power resources for packet

transmissions. If set too low, higher data rates are less likely



achievable; however, power resources would be more efficiently

utilized reducing the ROT in the system caused by the flow.

Engineering value = (OTA value +1) x –0.2 (unitless).

MergeThreshold(MERGETHRLD)

Description: MergeThreshold. Merge Threshold (in octets) is used to

decide if Reverse Link MAC packets from HiCap and LoLat flows can

be merged and sent in a LoLat transmission mode.




Allowed Range: 128, 256, 512, 1024, 2048, Infinite number of octets

Default Value: 512

Setting Tradeoff: If set too high, HiCap flows may be starved of transmit

power resources needed to deliver its data and will not be able to

meet its delay bound. If set too low, HiCap flows may unnecessarily

transmit at higher power levels or be sent as a LoLat transmission,

increasing the ROT in the system.



PayloadThresh(PAYLDTHRLD)

Description: PayloadThresh. Minimum packet size of a Reverse Link

MAC packet transmitted in LoLat mode that does not contain

any MAC flows with LoLat transmission mode.




Allowed Range: 768, 1024, 1536, Infinite number of bytes (unit: bytes)

Default Value: 1024

Setting Tradeoff: If set too high, HiCap flows would be less frequently

transmitted as a LoLat transmission, resulting in lower achievable

data rates and higher latencies. If set too low, higher data rates and

lower latencies could be more frequently achievable for HiCap flows,

but these HiCap flows would utilize excess power resources for

packet transmissions increasing ROT in the system.



PilotStrengthQRABThresholdDRCLock(PSQRABTHRLDDRCLOC)

Description: PilotStrengthQRABThresholdDRCLock. Minimum

PilotStrength value required for QRAB (from any sector in the

AT’s active set other than the Forward Link serving sector) to

be included in the QRABps,n (QRAB for sector s at subframe n)

computation when the sector’s DRC is in lock. The OTA value

is given in units of –0.25 dB.




Allowed Range: 0, –3, –6, –9 (unit: dB)

Default Value: –6

Setting Tradeoff: This is used to decide if a sector’s RAB should be included

in a MAC flow’s QRAB calculation. If set too low, the probability of

receiving a busy RAB indication increases because the increased

number of sectors used by the AT’s QRAB calculation. This results

in a reduction of T2PInflow for delay-sensitive applications. The

upshot is the AT’s lower T2PInflow results in lower interference. As a

result, data transmissions for delay sensitive applications may not

meet their QoS requirements. This is similar behavior to the

conservative (default) approach of calculating RAB in 1xEV-DO

Release 0.

If set too high, the probability of receiving a busy RAB indication

decreases because the reduced number of sectors used by the AT’s

QRAB calculation. This results in an increase of T2PInflow for

delay-sensitive applications. The disadvantage is AT’s higher

T2PInflow results in higher interference. However, data

transmissions for delaysensitive applications will meet their QoS

requirements.



PilotStrengthQRABThresholdDRCUnlock(PSQRABTHRLDDRCULOC)

Description: PilotStrengthQRABThresholdDRCUnlock. Minimum

PilotStrength value required for QRAB (from any sector in the

AT’s active set other than the Forward Link serving sector) to

be included in the QRABps,n (QRAB for sector s at subframe n)

computation when the sector’s DRC is not in lock.




Allowed Range: 0, –3, –6, –9 (unit: dB)

Default Value: –3

Setting Tradeoff: This is used to decide if a sector’s RAB should be included

in a MAC flow’s QRAB calculation. If set too low, the probability of

receiving a busy RAB indication increases because the increased

number of sectors used by the AT’s QRAB calculation. This results in

a reduction of T2PInflow for delay-sensitive applications. The upshot

is the AT’s lower T2PInflow results in lower interference. As a result,

data transmissions for delay sensitive applications may not meet their

QoS requirements. This is similar behavior to the conservative

(default) approach of calculating RAB in 1xEV-DO Release 0

If set too high, the probability of receiving a busy RAB indication

decreases because the reduced number of sectors used by the AT’s



QRAB calculation. This results in an increase of T2PInflow for

delay-sensitive applications. The disadvantage is AT’s higher

T2PInflow results in higher interference. However, data transmissions

for delaysensitive applications will meet their QoS requirements.

Rate1M8Supported(RATE1M8SUPP)

Description: Rate1M8Supported. A parameter used to indicate

whether the access terminal supports a maximum data rate of 1.8

Mbps on the Reverse Link




Allowed Range: Yes, No

Default Value: Yes

Setting Tradeoff: None



7.1.1 AuxiliaryPilotChannelParameters Attribute

AuxiliaryPilotChannelGain(AUXPCHGAIN)

Description: AuxiliaryPilotChannelGain. The Auxiliary Pilot Channel

Gain relative to the Traffic Channel Gain that the access

terminal uses to compute the Auxiliary Pilot Channel transmit

power level. The Auxiliary Pilot channel is transmitted when

the transmitted packet size exceeds

AuxiliaryPilotChannelMinPayload.






Setting Tradeoff: If set too low, reverse link power resources are conserved,

but decoding of packets that exceed

AuxiliaryPilotChannelMinPayload by the AN becomes less reliable.

If set too high, reverse link power resources are not conserved, but

reliable decoding of packets that exceed

AuxiliaryPilotChannelMinPayload by the AN is increased.



AuxiliaryPilotChannelMinPayload(AUXPCHMINPAYLD)

Description: AuxiliaryPilotChannelMinPayload. The Auxiliary Pilot

channel is transmitted only when the Reverse Link traffic

payload reaches a certain size. This parameter defines the

minimum Reverse Traffic Channel payload for which the

access terminal is required to transmit the Auxiliary Pilot

Channel.




Allowed Range: 128, 256, 512, 768, 1024, 1536, 2048, 3072, 4096, 6144,

8192, 12288 (unit: bit)

Default Value: 3072

Setting Tradeoff: If set too low, the Auxiliary pilot channel is transmitted

more often requiring more of the reverse link power resources to be

consumed. However packets exceeding

AuxiliaryPilotChannelMinPayload can be more reliably decoded by

the AN. If set too high, the Auxiliary Pilot channel is transmitted less

often and decoding of packets exceeding

AuxiliaryPilotChannelMinPayload size becomes less reliable.



7.1.2 RRIChannelPowerParameters Attribute

RRIChannelGainPreTransition0(RRICHGAINPRETRST0)

Description: RRIChannelGainPreTransition0. The RRI Channel Gain for

sub-packets transmitted prior to the T2P transition point for a

T2P transition value spanning 1 or more sub-frames.




Allowed Range: 0–15 (–8 to 7 dB after code conversion)

Default Value: 0

Setting Tradeoff: The RRI channel indicates the index of the reverse

link sub-packet as well as the payload size that helps the AN

to demodulate the transmitted sub-packet. If the gain is set

too high, the reliability of decoding the RRI channel is

increased, but the reverse link transmit power is increased. If

set too low, the reliability of decoding the RRI channel is

decreased, but reverse link transmit power is decreased.

The OTA values are 4-bit two’s complement numbers. They are

shown in the table in the “allowed range” as their decimal

representation. The default and the recommended values are

shown in hexadecimal format. Engineering value = convert



hexadecimal representation to 2’s complement value then

convert to decimal representation to produce the value in dB.

RRIChannelGainPostTransition0(RRICHGAINPOSTTRST0)

Description: RRIChannelGainPostTransition0. The RRI Channel Gain

for sub-packets transmitted following the T2P transition point

for a T2P transition value spanning 1 or more sub-frames.




Allowed Range: 0–15 (–8 to 7 dB after code conversion)

Default Value: 0xA, thtat is, –6 dB

Setting Tradeoff: The RRI channel indicates the index of the reverse

link sub-packet as well as the payload size that helps the AN

to demodulate the transmitted sub-packet. If the gain is set

too high, the reliability of decoding the RRI channel is

increased, but the reverse link transmit power is increased.

If set too low, the reliability of decoding the RRI channel is

decreased, but reverse link transmit power is decreased

The OTA values are 4-bit two’s complement numbers. They

are shown in the table in the “allowed range” as their decimal

representation. The default and the recommended values are

shown in hexadecimal format. Engineering value = convert



hexadecimal representation to 2’s complement value then

convert to decimal representation to produce the value in dB.

7.1.3 PilotStrength Attribute

This section presents the parameters that define the function that scales the pilot strength used for reverse link rate shaping.

NumPilotStrengthAxisValues(NUMPSAXIS)

Description: NumPilotStrengthAxisValues. The number of occurrences

of PilotStrengthAxis fields appearing in the PilotStrength

attribute record. Effectively, this defines the range and

granularity of pilot strength values for which T2PInflow can be

adjusted







Default Value: 2

Setting Tradeoff: This parameter describes the granularity for which the

function is defined. If set high the function would have a finer granularity

giving a response to a larger number of Pilot strength conditions. This would

require more bits to represent causing more OTA overhead. If set low, then

the function would have coarser granularity giving the function a more

limited response to pilot strength conditions, however the OTA overhead is

reduced.

PilotStrengthAxis0(PSAXIS0)

Description: PilotStrengthAxis0. This is one of the values that define

the PilotStrength axis tick marks.





Default Value: 0

Setting Tradeoff: In conjunction with NumPilotStrengthAxisValues, this

parameter defines the range of pilot strength values to which the

function is responsive to. This defines the region of coverage that



reverse link rate shaping is to be applied to. If the combination is set

such that the range is high, then a larger region of the coverage

would have reverse link rate shaping applied to thereby increasing

the potential number of users whose QoS might be affected.

However, other cell interference from outlying users is reduced. If

the combination is set such that the range is low, then a smaller

region of the coverage is affected, thereby affecting a smaller

potential number of users. The start and end points of the range are

also defined by this parameter depending on the distribution of the

Ec/Io of the coverage region for which rate shaping is to be in effect.

PilotStrengthPilotStrengthAxis0(PSPSAXIS0)

Description: PilotStrengthPilotStrengthAxis0. This is a factor used to

scale the T2PInflow if the filtered serving sector PilotStrength

equals the corresponding PilotStrengthAxis It is used to scale

the T2PInflow for an access terminal at the edge of coverage

(as an example) by an amount related to its position within

the coverage area. Pilot strength is used in this case to

measure/characterize the access terminals proximity to the

cell center.





Default Value: 0

Setting Tradeoff: This is the value of the factor by which T2PInflow is scaled.

If set high, other cell interference is reduced and capacity is increased,

however some delay sensitive MAC flows may not receive the T2P

allocation required to meet QoS requirements. If set low, other cell

interference is not reduced as much, however certain outlying delay

sensitive MAC flows QoS would not have their T2P allocation affected. In

conjunction with PilotStrengthAxisX, the combination decides the amount of



reduction in T2PInflow for given coverage conditions represented by pilot

strength measured in terms of Ec/Io.

7.2 RL MAC User Class Parameters

UserClass(USERGRADE)

Description: Modify User Class

Type: User class parameter

Command Line: Modify Command: MOD RLMACUP

Search Command: LST RLMACUP

Allowed Range: GOLD, SILVER, BRONZE, LINE (GOLD, SILVER, and

BRONZE private lines)

Default Value: None


7.2.1 Power Parameters Attribute

LoLatT2PTransition128(LOLATT2PTRST128)

Description: LoLatT2PTransitionKK. This is one less than the number

of sub-frames for which the receiver uses the pretransition

T2P values and the number of sub-frames after which the

receiver shall use the post-transition T2P values when

transmitting a Reverse Traffic Channel packet with packet size

of KK bits using the Low Latency Mode.




Allowed Range: 0–3 sub-frames

Default Value: 2




LoLatTerminationTarget128(LOLATTRMTRG128)

Description: LoLatTerminationTargetKK. This is one less than the

expected number of sub-frames needed to achieve the target

Physical Layer erasure rate for a Reverse Traffic Channel

packet transmitted with a packet size of KK bits using the Low

Latency Mode. A value of 0 indicates 1 subframe termination.





Default Value: 2


HiCapT2PTransition128(HICAPT2PTRST128)

Description: HiCapT2PTransitionKK. This is one less than the number

of sub-frames for which the receiver uses the pretransition

T2P values and the number of sub-frames after which the

receiver shall use the post-transition T2P values when

transmitting a Reverse Traffic Channel packet with packet size

KK bits using the High Capacity mode.





Default Value: 3


HicapTerminationTarget128(HICAPTRMTRG128)

Description: HicapTerminationTarget128. This is one less than the

expected number of sub-frames needed to achieve the target



Physical Layer erasure rate for a Reverse Traffic Channel

packet with packet size of KK bits transmitted using the High

Capacity Mode. A value of 0 indicates 1 subframe termination.





Default Value: 3


T2PLoLatPreTransition128(T2PLOLATPRETRST128)

Description: T2PLoLatPreTransitionKK. This is the Data Channel power

relative to the Pilot Channel power when transmitting a KK-bit

payload using the Low Latency mode prior to the T2P

transition.





Default Value: 13


T2PLoLatPostTransition128(T2PLOLATPOSTTRST128)

Description: T2PLoLatPostTransitionKK. This is the Data Channel

power relative to the Pilot Channel power when transmitting

a KK-bit payload using the Low Latency mode following the

T2P transition.

Type: T2P parameter






Default Value: 3


T2PHiCapPreTransition128(T2PHICAPPRETRST128)

Description: T2PHiCapPreTransition128. This is the Data Channel

power relative to the Pilot Channel power when transmitting a

KK-bit payload using the High Capacity mode prior to the T2P

transition.

Type: T2P parameter




Default Value: 3


T2PHiCapPostTransitionKK(T2PHICAPPOSTTRST128)

Description: T2PHiCapPostTransitionKK. This is the Data Channel

power relative to the Pilot Channel power when transmitting a

KK-bit payload using the High Capacity mode following the

T2P transition.

Type: T2P parameter




Default Value: 3




Parameter Allowed Range

Unit Default Value

Low Delay T2P Transition Point 128

0–3 Sub-frame 2

Low Delay Termination Target 128

0–3 Sub-frame 2

High Capacity T2P Transition Point 128

0–3 Sub-frame 3

High Capacity Termination Target 128

0–3 Sub-frame 3

Low Delay Pre-Transition T2P128

0–128 0.25 dB 13

Low Delay Post-Transition T2P128

0–128 0.25 dB 3

High Capacity Pre-Transition T2P128

0–128 0.25 dB 3

High Capacity Post-Transition T2P128

0–128 0.25 dB 3


0–3 Sub-frame 2




0–3 Sub-frame 2


0–3 Sub-frame 3


0–3 Sub-frame 3


0–128 0.25 dB 26


0–128 0.25 dB 15


0–128 0.25 dB 15


0–128 0.25 dB 15


0–3 Sub-frame 2


0–3 Sub-frame 2


0–3 Sub-frame 3


0–3 Sub-frame 3


0–128 0.25 dB 38


0–128 0.25 dB 28


0–128 0.25 dB 28


0–128 0.25 dB 28


0–3 Sub-frame 2

Low Delay Termination Target 0–3 Sub-frame 2



768


0–3 Sub-frame 3


0–3 Sub-frame 3


0–128 0.25 dB 46


0–128 0.25 dB 35


0–128 0.25 dB 35


0–128 0.25 dB 35


0–3 Sub-frame 2


0–3 Sub-frame 2


0–3 Sub-frame 3


0–3 Sub-frame 3


0–128 0.25 dB 50


0–128 0.25 dB 40


0–128 0.25 dB 40


0–128 0.25 dB 40


0–3 Sub-frame 2


0–3 Sub-frame 2




0–3 Sub-frame 3


0–3 Sub-frame 3


0–128 0.25 dB 56


0–128 0.25 dB 46


0–128 0.25 dB 46


0–128 0.25 dB 46


0–3 Sub-frame 2


0–3 Sub-frame 2


0–3 Sub-frame 3


0–3 Sub-frame 3


0–128 0.25 dB 62


0–128 0.25 dB 52


0–128 0.25 dB 52


0–128 0.25 dB 52


0–3 Sub-frame 2


0–3 Sub-frame 2

High Capacity T2P Transition 0–3 Sub-frame 3



Point 3072


0–3 Sub-frame 3


0–128 0.25 dB 65


0–128 0.25 dB 57


0–128 0.25 dB 57


0–128 0.25 dB 57


0–3 Sub-frame 2


0–3 Sub-frame 2


0–3 Sub-frame 3


0–3 Sub-frame 3


0–128 0.25 dB 70


0–128 0.25 dB 62


0–128 0.25 dB 62


0–128 0.25 dB 62


0–3 Sub-frame 2


0–3 Sub-frame 2


0–3 Sub-frame 3




0–3 Sub-frame 3


0–128 0.25 dB 76


0–128 0.25 dB 68


0–128 0.25 dB 68


0–128 0.25 dB 68


0–3 Sub-frame 1


0–3 Sub-frame 1


0–3 Sub-frame 3


0–3 Sub-frame 3


0–128 0.25 dB 93


0–128 0.25 dB 74


0–128 0.25 dB 74


0–128 0.25 dB 74


0–3 Sub-frame 1


0–3 Sub-frame 1


0–3 Sub-frame 3

High Capacity Termination Target 0–3 Sub-frame 3



12288


0–128 0.25 dB 105


0–128 0.25 dB 85


0–128 0.25 dB 85


0–128 0.25 dB 85

7.2.2 CommonPowerParameters Attribute

AllocationStagger(ALLOCSTGR)

Description: AllocationStagger. T2P allocation time stagger factor. This

field is set to the desired T2P allocation dither factor across

MAC flows at an access terminal and across access terminals.

This parameter has no effect on RTCMAC Subtype 3.




Allowed Range: 0–15 (unit: 1/16)

Default Value: 0




TxT2Pmin(TXT2PMIN)

Description: TxT2Pmin. Minimum TxT2P that an access terminal is

allowed to transmit at any time.





Default Value: 26

Setting Tradeoff: Typically, the power consumed to transmit a reverse

link traffic packet is quantified such that it is less than the

larger of: TxT2Pmin and the sum of PotentialT2POutflow for

all MAC flows. If set too high, then flows may ignore

commands to transmit at lower power levels. This may result

in pushing the AT to operate near the PA headroom though it

would provide more reverse link power resources to serve

delay sensitive applications. If set too low, delay sensitive or

real time applications may suffer from queue buildup and

increased delays.



RPCStep(RPCSTEP)

Description: RPCStep. Reverse Power Control step. The access

network uses this field to step through levels of AT transmit

power when controlling the power of the reverse link




Allowed Range: 0.5 dB, 1 dB

Default Value: 1 dB

Setting Tradeoff: This is the step size used to compensate for fades

and changes in the radio channel conditions. The idea is to try

and keep the access terminals transmitting no more than the

necessary power for the access network to successfully

decode the reverse link at a preset quality level. If set high, a

step might simply mean more power than necessary, causing

excess interference while reaching the desired power level

quicker. If set low, reaching the desired power level might be

slower, but with a better estimate of required change in power

causing less reverse link interference.

7.2.3 PermittedPayload Attribute

PermittedPayload0_1(PERMTPAYLD)

Description: A PermittedPayloadPS_k is the maximum Physical Layer

packet size that an access terminal is permitted to transmit



in sub-frame n if the Physical Layer packet size transmitted

in sub-frame n − (4 × k) was PS bits. This parameter was

introduced to limit the disparity in packet sizes between any

3 consecutively transmitted packets. Limiting the difference

in payload size between consecutive packets implies limiting

the variation in the AT’s transmit power, which in turn limits

the variation in the rise over thermal.





0x0-0, 0x1-128bit, 0x2-256bit, 0x3-512bit, 0x4-768bit, 0x5-1024bit,

0x6-1536bit, 0x7-2048bit, 0x8-3072bit, 0x9-4096bit, 0xA-6144bit, 0xB-8192bit,

0xA-12288bit

Default Value: 0x9

Setting Tradeoff: The argument of the tradeoff here applies to the

slope of the line shown in Figure. A higher slope indicates a

larger disparity between consecutive payloads, causing a

larger variation in ROT. In other words, the size of sudden

spikes in ROT depends on the disparity between consecutive

packet sizes. The resulting level of interference depends on

how high the ROT is when sudden spikes in ROT occur. This is

advantageous for QoS flows requiring transmission of larger

payload sizes. These flows will be allowed to quickly ramp up

to the largest payload size needed for the transmission.

The lower the disparity the less the variation in the ROT. This

can be disadvantageous for QoS flows requiring transmission

of larger payload sizes. These flows will not be allowed to

quickly ramp up to the largest payload size needed for the

transmission. The result is that certain MAC flows may not



receive the resources needed to meet certain QoS

requirements.

The private line subscribers do not have the following parameters:


Unit Default Value

PermittedPayload 0_1 bit 0x9

PermittedPayload 0_2 bit 0x9

PermittedPayload0_3 bit 0x7















PermittedPayload1024_3

0x0-0

0x1-128bit

0x2-256bit

0x3-512bit

0x4-768bit

0x5-1024bit

0x6-1536bit

0x7-2048bit

0x8-3072bit

0x9-4096bit

0xA-6144bit

0xB-8192bit

0xC-12288bit

bit 0x7












PermittedPayload4096_1 bit 0xb






PermittedPayload8192_1 bit 0xc






7.2.4 TxT2Pmax Attribute

This is a scaling function used to control the maximum TxT2P for an AT based on its geographical location within the coverage area of the serving sector. The geographical location of the AT within the coverage area is estimated from the serving sector’s filtered Ec/Io. This is used as a safety valve (TxT2P upper bound) preventing the AT from transmitting at excessive power levels due to



having/hosting a MAC flow requiring too much TxT2P. This is done to control/limit the level of interference caused by ATs of the current sector to ATs of nearby sectors.

NumPilotStrengthAxisValues(NUMPSAXIS)

Description: NumPilotStrengthAxisValues. The number of occurrences of PilotStrengthAxis field in the TxT2Pmax Attribute record.




Allowed Range: 1–2 (unit: occurrences)

Default Value: 2

Setting Tradeoff: This parameter describes the granularity for which

the function is defined. If set high the function would have a

finer granularity giving a response to a larger number of Pilot

strength conditions. This would require more bits to represent

causing more OTA overhead. If set low, then the function

would have coarser granularity giving the function a more

limited response to pilot strength conditions, however the

OTA overhead is reduced.



PilotStrengthAxis0(PSAXIS0)

Description: PilotStrengthAxis0. This is one of the values that define the

PilotStrength axis much like an axis tick mark.




Allowed Range: –15 to 0 dB

Default Value: 10

Setting Tradeoff: In conjunction with NumPilotStrengthAxisValues,

this parameter defines the range of pilot strength values to

which the function is responsive to. This defines the region of

coverage that reverse link rate shaping is to be applied to. If

the combination is set such that the range is high, then a

larger region of the coverage would have reverse link rate

shaping applied to thereby increasing the potential number of

users whose QoS might be affected. However, other cell

interference from outlying users is reduced. If the

combination is set such that the range is low, then a smaller

region of the coverage is affected, thereby affecting a smaller

potential number of users. The start and end points of the

range are also defined by this parameter depending on the

distribution of the Ec/Io of the coverage region for which rate

shaping is to be in effect.



TxT2PmaxPilotStrengthAxis0(TXT2PMAXPSAXIS0)

Description: TxT2PmaxPilotStrengthAxis0. The maximum TxT2P that

the access terminal is allowed to transmit based on the

serving sector’s filtered PilotStrength specified by the

corresponding PilotStrengthAxis.





Default Value: 24

Setting Tradeoff: This is the factor by which the ceiling value on TxT2P

is scaled. If set high, interference t other cells may be

increased and capacity reduced, however some delay

sensitive MAC flows may not receive the T2PInflow allocation



required to meet QoS requirements. If set low, interference

to other cells is not increased as much, however certain

outlying delay sensitive MAC flows QoS may not be

affected.,In conjunction with PilotStrengthAxisX, the

combination decides the amount of reduction in the ceiling

value on TxT2P for given coverage conditions represented by

pilot strength measured in terms of Ec/Io.

7.3 RL MAC Rate Class Parameter Table

Rate Class (RATEGRADE)

Description: This parameter indicates the reverse rate class.

Type: The parameter of flow level

Command Line: Modify Command: MOD RLMACRP

Search Command: LST RLMACRP

Allowed Range:

0–9.6 kbit/s, 1–19.2 kbit/s, 2–38.4 kbit/s, 3–76.8 kbit/s,



4–153.6 kbit/s, 5–307.2 kbit/s, 6–614.4 kbit/s



T2PInflowmin(T2PINFLOWMIN)

Description: T2PInflowmin. This is the minimum T2P inflow that the

receiver can use to determine the T2P allocation for MAC flow

NN, where NN > 00. It is specified as an 8-bit value in units of

0.25 dB. It is a minimum data rate guarantee for a flow.





Default Value: 7

Setting Tradeoff: If set too high, the risk of other cell interference is

increased, although flows would be allowed a higher

minimum data rate. If set too low, the minimum data rate is

lower, although other cell interference is reduced.

Notes: OTA x 0.25 dB



T2PInflowmax(T2PINFLOWMAX)

Description: T2PInflowmax. This is the maximum T2PInflow that the



0.25 dB. This is an upper bound on the maximum data rate for

a flow.





Default Value: 120

Setting Tradeoff: If this value is set too high, there is an increased risk

of unused T2P resources, though this provides sufficient

resources for serving a MAC flow’s requirement. If set too low,

there may be insufficient T2P resources available for

transmission of large payload sizes. The consequence is an

increase in data queue buildup and certain flows not being

able to meet their QoS requirements.

TxT2Pmin(TXT2PMIN)

Description: TxT2Pmin. Minimum TxT2P that an access terminal is

allowed to transmit at any time.







Default Value: 15

Setting Tradeoff: Typically, the power consumed to transmit a reverse

link traffic packet is quantified such that it is less than the

larger of: TxT2Pmin and the sum of PotentialT2POutflow for

all MAC flows. If set too high, then flows may ignore

commands to transmit at lower power levels. This may result

in pushing the AT to operate near the PA headroom though it

would provide more reverse link power resources to serve

delay sensitive applications. If set too low, delay sensitive or

real time applications may suffer from queue buildup and

increased delays.

Notes: OTA x 0.25 dB

7.3.1 PermittedPayload Attribute

PermittedPayload 0_1(PERMTPAYLD)

Description: PermittedPayloadPS_K. A PermittedPayloadPS_k is the

maximum Physical Layer packet size that an access terminal

is permitted to transmit in sub-frame n if the Physical Layer

packet size transmitted in sub-frame n − (4 × k) was PS bits.



This parameter was introduced to limit the disparity in packet

sizes between any 3 consecutively transmitted packets.

Limiting the difference in payload size between consecutive

packets implies limiting the variation in the AT’s transmit

power, which in turn limits the variation in the rise over

thermal.





0x0-0, 0x1-128bit, 0x2-256bit, 0x3-512bit, 0x4-768bit, 0x5-1024bit,

0x6-1536bit, 0x7-2048bit, 0x8-3072bit, 0x9-4096bit, 0xA-6144bit, 0xB-8192bit,

0xC-12288bit

Default Value: 0x9

Setting Tradeoff: The argument of the tradeoff here applies to the

slope of the line shown in Figure A higher slope indicates a

larger disparity between consecutive payloads, causing a

larger variation in ROT. In other words, the size of sudden

spikes in ROT depends on the disparity between consecutive

packet sizes. The resulting level of interference depends on

how high the ROT is when sudden spikes in ROT occur. This is

advantageous for QoS flows requiring transmission of larger

payload sizes. These flows will be allowed to quickly ramp up

to the largest payload size needed for the transmission.

The lower the disparity the less the variation in the ROT. This

can be disadvantageous for QoS flows requiring transmission

of larger payload sizes. These flows will not be allowed to

quickly ramp up to the largest payload size needed for the

transmission. The result is that certain MAC flows may not

receive the resources needed to meet certain QoS

requirements.




Unit Default Value




















PermittedPayload1536_2

0x0-0

0x1-128bit

0x2-256bit

0x3-512bit

0x4-768bit

0x5-1024bit

0x6-1536bit

0x7-2048bit

0x8-3072bit

0x9-4096bit

0xA-6144bit

0xB-8192bit

0xC-12288bit

bit 0x9






















The recommended values of 6800 are as follows:





7.4 RL MAC Flow Level Parameter Table

MAC Flow Group Identification (MACFLOWID)

Description: MAC flow ID


Command Line: Modify Command: MOD RLMACFP

Search Command: LST RLMACFP

Allowed Range:



MAINSVC, UMASIGN, BE, STREAM, RTGAME, RTVIDEO,

MEDIASIGN, RTVOICE (Meaning: 7: main service; 6: air interface

signaling; 5: best-effort service; 4: stream service; 3: real-time

interactive game service; 2: real-time video service; 1: media control

signaling and test application; 0: real-time voice service)



7.4.1 BucketFactorNN Attribute

BucketFactor-NumT2PAxisValues(BFNUMT2PAXIS)

Description: BucketFactor-NumT2PAxisValues. The number of

occurrences of T2PAxis field in this record minus 1. This can

be interpreted as the number of tick marks on the T2P axis of

the chart that defines the BucketFactor function for MAC flow

NN.




Allowed Range: BFNT2PA0, BFNT2PA1, BFNT2PA2, BFNT2PA3

Default Value: See the list.




BucketFactor-NumFRABAxisValues(BFNUMFRABAXIS)

Description: BucketFactor-NumFRABAxisValues. The number of

occurrences of FRABAxis field in this record minus 1. This can

be interpreted as the number of tick marks on the FRAB axis

of the chart that defines the BucketFactor function for MAC

flow NN.




Allowed Range: BFNFRABA0, BFNFRABA1, BFNFRABA2, BFNFRABA3,

BFNFRABA4

Default Value: None




BucketFactor-T2PAxis00(BFT2PAXIS00)

Description: BucketFactor-T2PAxis00. This is one of the values that

define the T2P axis and is specified as an 8-bit value in units of

0.25 dB. It can be interpreted as the T2P value at the first tick

mark on the T2P Axis.





Default Value: None




BucketFactor-FRABAxis0(BFFRABAXIS0)

Description: BucketFactor-FRABAxis0. This is one of the values that

define the FRAB axis and is specified as a 4-bit 2’s

complement value in the range –1…7/8, inclusive. It can be

interpreted as the value at the first tick mark on the FRAB

access of the BucketFactor function chart.







Default Value: None


BucketFactorT2PAxis00FRABAxis0(BFT2PAXIS00FRABAXIS0)

Description: BucketFactorT2PAxis00FRABAxis0. This is the value of

the two dimensional function BucketFactor() at the T2PInflow

value of T2PAxis00 and FRAB value of FRABAxis0. It is

specified as an 8-bit value in the range 1...32 7/8, inclusive,

in units of 1/8.







Default Value: None







Unit Default Value

6: Air Interface Signaling

Default Value

5: Best-Effort Forwarding

Service

Default Value

2: Real-Time

Video Service

Default Value

1: Media Control

Signaling and Test

Application

Default Value

0: Real-Time

Voice Service

BucketFactor-NumT2PAxisValues

BUKTFACTOR

0–3 Occurrences 1 1 0 0 0

BucketFactor-NumFRABAxisValues

BFNUMFRABAXIS

0–4 Occurrences 0 2 0 0 0

BucketFactor-T2PAxis00

BFT2PAXIS00

0–255 0.25 dB 16 0 0 0 0

BucketFactor-FRABAxis0

BFFRABAXIS0

0–15 0 8 8 8 8

BucketFactor-FRABAxis 1

BFFRABAXIS1

0–15 11

BucketFactorT2PAxis00FRABAxis0

BFT2PAXIS00FRABAXIS0

0–255 24 40 12 8 8

BucketFactorT2PAxis00FRA

0–255 16



BAxis1




0–255 16



0–255



0–255



0–255 8 8



0–255 8



0–255 8


0–255






0–255



0–255



0–255



0–255



0–255



0–255


BFT2PAXIS03

0–255



7.4.2 Simple Attribute

BucketLevelMax(BUKTLVLMAXOTH)

Description: BucketLevelMax. The maximum bucket capacity in terms

of storing T2P resource (in a Token-Bucket Mechanism) for

flow NN. The flow number NN is a hexadecimal number in the

range of 0x02 through MaxNumMACFlows −1, inclusive. Note

that for this parameter attribute ID, when NN = 0x00 or 0x01,

the value is considered Null. Separate Attribute IDs are used

for Flows 0x00 and 0x01



FRABAXIS0



0–255



0–255



0–255



0–255




Allowed Range: See the following table.

Default Value: See the following table.




there may be insufficient T2P resources available in the

bucket for transmission of large payload sizes. The

consequence is an increase in data queue buildup and certain

flows not being able to meet their QoS requirements.

The parameter is not sensitive to load determination scheme. Engineering units = OTA value x 0.25 dB

BurstDurationFactor(BUSTDURAFACTOR)

Description: BurstDurationFactor. A factor used to adjust the level of

T2PInflow made available to MAC flow NN and stored in a

bucket to account for the burstiness of user applications.






Setting Tradeoff: If set too high then more T2PInflow resources would be available for a particular MAC flow making it more adaptive to the bursty behavior of the user application. However, this can lead to an



increase in interference spikes caused by an AT. If set too low, the MAC flow might become less adaptive to the bursty nature of the user application, but makes it a less erratic source of interference.

MergeThreshold(MERGETHRLDOTH)

Description: MergeThreshold. Merge Threshold (in octets) is used to

decide if Reverse Link MAC packets from HiCap and LoLat

flows can be merged and sent in a LoLat transmission mode.




Allowed Range: See the following table. Unit: byte.


Setting Tradeoff: If set too high, HiCap flows may be starved of transmit power resources needed to deliver its data and will not be able to meet its delay bound. If set too low, HiCap flows may unnecessarily transmit at higher power levels or be sent as a LoLat transmission, increasing the ROT in the system.



QRABSelect(QRABSELECT)

Description: QRABSelect. Used to indicate one of two methods by

which QRAB can be calculated to estimate short term sector

loading for MAC flow NN.






Setting Tradeoff: If 0x00, the QRAB value (QRABn) is determined by the logical OR of RAB’s sent by all pilots in the AT’s active set. The probability of receiving a busy RAB indication increases because the increased number of sectors used by the AT’s QRAB calculation. This results in a reduction of T2PInflow for delay-sensitive applications. The upshot is the AT’s lower T2PInflow results in lower interference. As a result, data transmissions for delay sensitive applications may not meet their QoS requirements. This is similar behavior to the conservative (default) approach of calculating RAB in 1xEV-DO Release 0.

If 0x01 is the value chosen, the probability of receiving a busy RAB indication decreases because the reduced number of sectors used by the AT’s QRAB calculation (QRABps,n). This results in an increase of T2PInflow for delay-sensitive applications. The disadvantage is AT’s higher T2PInflow results in higher interference.



As a result, data transmissions for delay-sensitive applications will meet their QoS requirements.

TransmissionMode(TXMODE)

Description: TransmissionMode. The transmission mode determines if

the default behavior of a MAC flow is HiCap or LoLat. HiCap

implies a mode that emphasizes utilizing system resources to

maximize system capacity. LoLat mode emphasizes that

system resources are utilized to minimize the delay required

to deliver a packet.






Setting Tradeoff: A 0x00 setting (HiCap) utilizes radio system resources to maximize capacity which might increase packet delivery time. A 0x01 setting (LoLat) utilizes system resources in order to minimize packet delivery time.



T2PFilterTC(T2PFLTRTC)

Description: IIR filter time constant used by the access terminal for

computing a smooth value of T2PInflow at subframe n for

MAC flow 0xNN.






Setting Tradeoff: If set low, T2P estimates would be biased by the short term variation in the radio channel (noisy), but would track the dynamics of the radio channel more accurately. If set high, T2P estimates become too smooth, which means that the dynamics of the radio channel may not be tracked as accurately.




Unit Default Value


Default Value


Service

Default Value

2: Real-Time

Video Service

Default Value

1: Media Control

Signaling and Test

Application

Default Value

0: Real-Time

Voice Service

BucketLevelMax

BUKTLVLMAXOTH

Signaling flow: [1,255]

Other flows: [0,255]

0.25 dB

80 108 102 102 102

BurstDurationFactor

BUSTDURAFACTOR

0–3 0 0 2 0 0

MergeThreshold

MERGETHRLDOTH

Signaling flow: [0,4]

Other flows: [0,6]

0 2 0 0 0



QRABSelect

QRABSELECT

0-QRAB

1-QRABps

0 0 0 0 0

TransmissionMode

TXMODE

0-High capacity

1-Low delay

1 0 1 1 1

T2PFilterTC

T2PFLTRTC

0–4 1 1 4 1 1

7.4.3 T2PtransitionFunctionNN Attribute

This is a two dimensional function that determines the change in T2PInflow for a given T2P and FRAB value. There are two flavors of this function, one that increases T2PInflow known as T2PUp and another that decreases T2PInflow known as T2PDn.

T2Ptransition-NumT2PAxisValues(T2PTNUMT2PAXIS)

Description: This parameter describes the granularity for which the function will be defined. If set high, the function would have a finer granularity giving a response to a larger number of average T2PInflow conditions. If set low, then the function would have a coarser granularity giving the function a response to limited range of T2PInflow values.






Allowed Range: See the table.

Default Value: See the table.

Setting Tradeoff: It is difficult to describe the tradeoffs of a three dimensional value such as this function as described by it’s parameters, instead, impact of the setting the parameters at their lower and upper ends will be discussed.

T2Ptransition-NumFRABAxisValues(T2PTNUMFRABAXIS)

Description: This parameter describes the granularity for which the function will be defined. If set high, the function would have a finer granularity giving a response to a larger set of FRAB values or long term sector loading conditions. If set low, then the function would have a coarser granularity giving the function a response to limited range of FRAB values.






Setting Tradeoff: It is difficult to describe the tradeoffs of a three dimensional value such as this function as described by it’s parameters, instead, impact of the setting the parameters at their lower and upper ends will be discussed.

T2Ptransition-T2PAxis00(T2PTT2PAXIS00)

Description: The number of occurrences of FRABAxis field in this record minus 1. This can be interpreted as the number of tick marks on the FRAB axis of the chart that defines the T2PTransition Function for MAC flow NN, see Figure.








Setting Tradeoff: See the figure.

T2Ptransition-FRABAxis0(T2PTFRABAXIS0)

Description: This is one of the values that define the FRAB axis and is specified as a 4-bit 2’s complement value in the range -1…7/8, inclusive. It can be interpreted as the value at the first tick mark on the FRAB access of the chart that defines the

T2PTransition Function for MAC flow NN. See Figure.


Command Line: Search Command: LST RLMACFP



Setting Tradeoff: See the figure.

T2PUpT2PAxis00FRABAxis0(T2PupT2PAxisXXFRABAxisY )

Description: T2PInflow and the serving sector’s long term loading expressed

in FRAB. This is the value of the two dimensional function T2PUp of the

associated

MAC flow at T2PAxis00, and FRABAxis0 used to compute T2PInflow. It is specified as an 8-bit 2’s complement in units of 0.25 dB.






Setting Tradeoff: The design of the T2PUp functions govern the following two aspects: (1)steady state MAC layer allocation (in the T2P domain) for every flow in the network, and (2) the dynamics of Rise Over Thermal as a function of up and down ramping aggregated over all flows in the network and steady state convergence time. If these functions are too aggressive (i.e., large T2PInflow step sizes), then the convergence time is made smaller but variance in Rise Over Thermal (RoT) may increase. Conversely, if these functions are made too conservative (i.e., very small T2PInflow step sizes), then the convergence time is



made larger while reducing variance in RoT. A properly designed set of T2PUp functions balances these two tradeoffs.

T2PDnT2PAxis00FRABAxis0( T2PdnT2PAxisXXFRABAxisY)

Description: T2PInflow and the serving sector’s long term loading expressed

in FRAB.This is the value of the two dimensional function T2PUp of the

associated

MAC flow at T2PAxis00, and FRABAxis0 used to compute T2PInflow. It is specified as an 8-bit 2’s complement in units of 0.25 dB.






Setting Tradeoff: The design of the T2PDn functions govern the following two aspects: (1)steady state MAC layer allocation (in the T2P domain) for every flow in the network, and (2) the dynamics of Rise Over Thermal as a function of up and down ramping aggregated over all flows in the network and steady state convergence time. If these functions are too aggressive (i.e., large T2PInflow



step sizes), then the convergence time is made smaller but variance in Rise Over Thermal (RoT) may increase. Conversely, if these functions are made too conservative (i.e., very small T2PInflow step sizes), then the convergence time is made larger while reducing variance in RoT. A properly designed set of T2PDn functions balances these two tradeoffs.


Unit Default Value


Default Value


Service

Default Value

2: Real-Time

Video Service

Default Value

1: Media Control

Signaling and Test

Application

Default Value

0: Real-Time Voice

Service

T2Ptransition-NumT2PAxisValues

T2PTNUMT2PAXIS

0–5 1 3 2 2 2

T2Ptransition-NumFRABAxisValues T2PTNUMFRABAXIS

0–5 0 3 0 0 0

T2Ptransition-T2PAxis00 0–255 0.25 16 0 0 0 0



T2PTT2PAXIS00 dB

T2Ptransition-FRABAxis0

T2PTFRABAXIS0

0–15 0 8 8 8 8

T2Ptransition-FRABAxis1

T2PTFRABAXIS1

0–15 11

T2PUpT2PAxis00FRABAxis0

T2PUPT2PAXIS00FRABAXIS0

0–255 0.25 dB

244 29 19 27 28


0–255 0.25 dB

10


0–255 0.25 dB

254


0–255 0.25 dB

254


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB

188 251 19 27 28


0–255 0.25 dB

232


0–255 0.25 dB

220


0–255 0.25 dB

220


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB

251 176 176 136




0–255 0.25 dB

232


0–255 0.25 dB

220


0–255 0.25 dB

220


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB

24


0–255 0.25 dB

5


0–255 0.25 dB

249


0–255 0.25 dB

249


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB

T2PUPT2PAXIS04FRAB 0–255 0.25



AXIS5 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB

T2PDNT2PAXIS01FRABAXIS3

0–255 0.25 dB

216 233 176 176 176


0–255 0.25 dB

226


0–255 0.25 dB

214


0–255 0.25 dB

214


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB

216 233 176 176 176


0–255 0.25 dB

226


0–255 0.25 dB

214




0–255 0.25 dB

214


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB

14 176 176 176


0–255 0.25 dB

7


0–255 0.25 dB

251


0–255 0.25 dB

251


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB

45


0–255 0.25 dB

38


0–255 0.25 dB

26


0–255 0.25 dB

26


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB

T2PDNT2PAXIS04FRAB 0–255 0.25



AXIS1 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB


0–255 0.25 dB

7.4.4 T2PinflowRangeNN Attribute

T2PInflowmin(T2PINFLOWMIN)

Description: T2PInflowmin. This is the minimum T2P inflow that the



0.25 dB. It is a minimum data rate guarantee for a flow.




Allowed Range: [0, 255]



Default Value: See the above table. Unit: 0.25 dB.

Setting Tradeoff: If set too high, the risk of other cell interference is

increased, although flows would be allowed a higher

minimum data rate. If set too low, the minimum data rate is

lower, although other cell interference is reduced.

T2PInflowmax(T2PINFLOWMAX)

Description: T2PInflowmax. This is the maximum T2PInflow that the



0.25 dB. This is an upper bound on the maximum data rate

for a flow.




Allowed Range: [0, 255]

Default Value: See the above table. Unit: 0.25 dB.




there may be insufficient T2P resources available for

transmission of large payload sizes. The consequence is an

increase in data queue buildup and certain flows not being

able to meet their QoS requirements.


Unit Default Value


Default Value


Service

Default Value

2: Real-Time

Video Service

Default Value

1: Media Control

Signaling and Test

Application

Default Value

0: Real-Time

Voice Service

T2PInflowmin

T2PINFLOWMIN

0–255 0.25 dB

16 7 7 15 15

T2PInflowmax

T2PINFLOWMAX

0–255 0.25 dB

43 120 120 120 120



Chapter 8 Reverse Power Control Parameters

8.1 Reverse Target PER (DOAREVPER)

Description: This parameter indicates the PER value that the reverse data

expects.

Type: The internal parameter of sector carrier level

Command Line: Modify Command: MOD DOARPCP

Search Command: LST DORRMP: DORRMINF=DOARPCP;

Allowed Range: RPER1(0.1)–RPER300(30) (unit: 0.1%)

Default Value: RPER10(1), that is, 1%

Setting Tradeoff: The target PER setting must consider the balance

between the reverse transmit power and the system load. If this

parameter is set too low, the transmit power of the AT is higher, and

the reverse load of the system is also increased.

8.2 Minimum PCT (MINPCT)

Description: This parameter indicates the minimum PCT value that can be

adjusted for outer loop power control.




Allowed Range: –28672 to –12416 (unit: 1/1024 dB)

Default Value: –22016 (–21.5 dB)

Setting Tradeoff: If this parameter is set too low, the PCT fluctuates

dynamically in a wide range. When the signal quality on the reverse

link is good, the reverse transmit power of ATs and the reverse load of

the system can be reduced. When the reverse link experiences



instant signal fading, however, the power cannot be increased in time,

thus affecting the transmission performance of ATs.

8.3 Maximum PCT (MAXPCT)

Description: This parameter indicates the maximum PCT value that can be

adjusted for outer loop power control.





Default Value: –17920 (–17.5 dB)

Setting Tradeoff: If this parameter is set too high, the performance can be

improved, especially in a poor radio environment. But the reverse

transmit power is increased, and the reverse capacity of the system is

decreased.

8.4 Initial PCT (INITPCT)

Description: The outer loop power control begins with the initial PCT value.

The BSC adjusts the PCT value from time to time based on the initial

PCT value.





Default Value: –18432 (–18 dB)

Setting Tradeoff: If this parameter is set too high, the performance can be

ensured at the initial stage of call setup.



8.5 PCT UP Step of IDLE Frame in NoData State (NODATADELTA)

Description: This parameter specifies the PCT UP Step of IDLE frames in the

NoData state.




Allowed Range: 0–1024 (unit: 1/1024 dB)

Default Value: 10

Setting Tradeoff: The value of this parameter must be smaller than the value

of RPC Step (RPCSTEP).

8.6 Maximum PCT Increment in NoData State (NoDataMaxIncrease)

Description: This parameter specifies the maximum allowed increment of the

PCT for successively received IDLE frames in NoData state .




Allowed Range: 0–32768 (unit: 1/1024 dB)

Default Value: 500

Setting Tradeoff: If this parameter is set too high, link change in NoData

state can be effectively compensated to ensure the performance at

the beginning of data transfer. There is, however, the risk of over

compensation, which may increase power consumption. When

setting this parameter, ensure a balance between power

consumption and transmission performance.

8.7 Maximum PCT in NoData State (NoDataMaxPCT)

Description: This parameter specifies the maximum PCT value in the NoData

state.







Default Value: –18432 (–18 dB)

Setting Tradeoff: Refer to section 8.6 Maximum PCT Increment in NoData

State (NoDataMaxIncrease) for details.

Documents

CDMA2000 1xEV-DO Rev.a Performance Parameters