Upload
others
View
4
Download
1
Embed Size (px)
Citation preview
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Contents
1. HSPA & HSPA+ Overview
2. HSDPA Introduction
3. HSUPA Introduction
4. HSPA+ Introduction
Page58
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
All the HSPA+ Features in RAN11 and
RAN12
Page59
3GPP Version HSPA+ Technology RAN Version
Release 7 Downlink Enhanced L2 RAN 11.0
2x2 MIMO RAN 11.0
Downlink 64QAM RAN 11.0
Downlink Enhanced CELL_FACH
Operation
RAN 11.0
Continuous packet connectivity (CPC) RAN 11.0
Uplink 16QAM RAN 12.0
Release 8 Uplink Enhanced L2 RAN 12.0
Downlink MIMO+64QAM RAN 12.0
DC-HSDPA RAN 12.0
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved. Page60
HSPA+ Introduced in Huawei Product
HSPA+ Technology RAN Version
Downlink DC-HSDPA+MIMO RAN 13.0
Traffic-Based Activation and Deactivation of
Secondary Carrier in Dual-Carrier HSDPA
RAN 13.0
E-DPCCH Boosting RAN 13.0
Enhanced Uplink CELL_FACH RAN 13.0
DC-HSUPA RAN 14.0
DB-HSDPA+MIMO+64QAM RAN 15.0
4C+MIMO+64QAM RAN 15.0
Flexible DC/DB-HSDPA RAN 15.0
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Modulation Modes for HSPA+
Three modulation modes can be used for HS-PDSCH
Page61
64QAM allows more bits per
Symbol to be transmitted Higher peak rate achieved in
good channel condition
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
What is MIMO?
MIMO: Multiple Input Multiple Output
Page62
Transmitter Receiver
Wireless Channel …
…
N M
Channel Condition Feedback
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
What can MIMO provide?
2×2 MIMO can increase peak data rate to 28Mbps
Page63
Transmitter Receiver
Wireless Channel
Channel Condition Feedback
Data Stream 1
Data Stream 2
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Enhanced CELL_FACH Operation
Enhanced CELL_FACH operation
Enhanced CELL_FACH operation allows the use of HSDPA
technologies for the UEs in the CELL_FACH, CELL_PCH, and
URA_PCH state. The purpose is to increase the peak rates in these
states and reduce the signaling transmission delay during service
setup or state transition with the result improving the user
experience.
Page64
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
DL Enhanced L2
This feature allows Uu L2 to use flexible PDU size on RLC layer
and segmentation on MAC layer. The feature prevents the L2
from becoming the bottleneck of higher Uu rate increased by
MIMO and 64QAM.
DL enhanced L2 is the precondition of MIMO, 64QAM and
enhanced CELL_FACH operation.
Page65
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Enhanced L2
Enhanced L2 allows flexible PDU sizes at the RLC layer and
segmentation at the MAC layer on the Uu interface. The
feature improves the transmission efficiency.
Page66
336bits 656bits
fixed RLC PDU size
flexible RLC PDU size
Before
With Enhanced L2
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
CPC (Continuous Packet Connectivity)
CPC allows the uplink and downlink transmissions to take place
at periodic intervals. This feature reduces the transmitted
power (and thus increases the UE battery life) because the UE
does not have to monitor and transmit overhead channels
every TTl. This reduction in the transmitted power also helps to
increase the uplink capacity by decreasing the total interference.
This improvement is especially significant when there are users
who transmit data infrequently as VoIP users.
CPC feature consists of DL DRX, UL DTX and HS-SCCH less
operation.
Page67
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Release 7 HSPA+ Capable UE Categories
Page68
HS-DSCH
category
Supported Modulations
Without MIMO
Supported Modulations
with MIMO
Category 13
QPSK, 16QAM, and 64QAM None Category 14
Category 15
QPSK and 16QAM QPSK and 16QAM Category 16
Category 17
QPSK, 16QAM, and 64QAM QPSK and 16QAM Category 18
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Downlink MIMO with 64QAM
In RAN12 downlink MIMO and 64QAM can be used
simultaneously by one UE to receive HSDPA data. With this
technology, the theoretical downlink peak rate can reach 42
Mbps.
Page69
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
UE Categories for MIMO with 64QAM
UE categories 19 and 20 support MIMO with 64QAM.
Page70
HS-DSCH
category
Maximum
number of
HS-DSCH
codes
received
Minimum
inter-TTI
interval
Maximum
number of bits
of an HS-DSCH
transport block
received within
an HS-DSCH TTI
Total
number
of soft
channel
bits
Supported
modulatio
ns without
MIMO
operation
Supported
modulations
simultaneous
with MIMO
operation
Category
19 15 1 35280 518400
QPSK, 16QAM, 64QAM Category
20 15 1 42192 518400
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Prerequisites for MIMO with 64QAM
Only PS streaming service, PS interactive service or PS
background service can be carried by MIMO, 64QAM or MIMO
with 64QAM.
The cell supports enhanced L2.
UE supports MIMO with 64QAM.
The service is carried by HSDPA.
Page71
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
What is DC-HSDPA (Dual-cell HSDPA)?
DC-HSDPA allows a UE to set up HSDPA connections with two
inter-frequency time-synchronous cells that have the same
coverage. Theoretically, DC-HSDPA with 64QAM can provide a
peak rate of 42Mbps in the downlink.
Page72
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
DC-HSDPA Basic Concepts
Anchor carrier: a carrier that carries all the channels, including uplink
dedicated channels, of a UE. Each UE has only one anchor carrier.
Supplementary carrier: a carrier that carries only three types of
downlink channel of a UE. Each UE has only one supplementary
carrier. The three types of downlink channel are as follows:
HS-SCCH
HS-PDSCH
P-CPICH
Page73
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Why DC-HSDPA is used?
DC-HSDPA can improve downlink data rate. The theoretical
peak data rate with DC-HSDPA is 42Mbps.
DC-HSDPA can reduce time delay for some services such as
HTTP.
DC-HSDPA can improve the data rate in cell edge and improve
downlink coverage.
DC-HSDPA can improve the system capacity when downlink
load is unbalanced between different frequencies. The gain is
very obvious in cell edge.
Page74
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
UE categories for DC-HSDPA
UE categories 21, 22, 23 and 24 support DC-HSDPA.
Page75
HS-DSCH
category
Maximum
number of
HS-DSCH
codes
received
Minimum
inter-TTI
interval
Maximum
number of bits
of an HS-DSCH
transport
block received
within
an HS-DSCH
TTI
Total
number
of soft
channel
bits
Supported
modulations
with dual
cell
operation
Category 21 15 1 23370 345600 QPSK,
16QAM Category 22 15 1 27952 345600
Category 23 15 1 35280 518400 QPSK,
16QAM,
64QAM Category 24 15 1 42192 518400
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Prerequisites for DC-HSDPA
Only PS streaming service, PS interactive service or PS
background service can be carried by DC-HSDPA.
The cell supports downlink enhanced L2.
UE supports DC-HSDPA.
The service is carried by HSDPA.
Page76
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Uplink Enhanced L2
Uplink enhanced L2 allows flexible PDU sizes at the RLC layer
and segmentation at the MAC layer on the Uu interface. The
feature improves the uplink transmission efficiency.
Page77
336bits 656bits
uplink fixed RLC PDU size
uplink flexible RLC PDU size
Before R8
R8
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Uplink 16QAM Introduction
Uplink 16QAM modulates 4 bits/symbol whereas the original
QPSK modulates only 2 bits/symbol. As a result, it doubles the
HSUPA data rate to 11.5Mbps at the physical layer.
Page78
HSUPA 16QAM allows more bits per
Symbol to be transmitted
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Technical Characteristics
In the case of 16QAM, a gain is achieved only when the signal-
to-noise ratio (SNR) is high. Therefore, a good channel
environment is required, for example, a cell with good indoor
coverage or micro coverage.
In comparison with QPSK, a gain is achieved only when 16QAM
is used after the UL rate reaches 4Mbps. Therefore, the UL
16QAM is configured only after the maximum bit rate (MBR)
exceeds 4Mbps.
Page79
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
UE categories for UL 16QAM
UE category 7 supports UL 16QAM.
Page80
E-DCH
category
Maxim
um
numbe
r of E-
DCH
codes
transm
itted
Minim
um
spread
ing
factor
Support
for 10
and 2 ms
TTI EDCH
Maximum number
of bits of an E-
DCH transport
block transmitted
within a 10 ms E-
DCH TTI
Maximum number
of bits of an E-
DCH transport
block transmitted
within a 2 ms E-
DCH TTI
Category 7 4 SF2 10ms and
2 ms TTI
20000 22996
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
DC-HSDPA+MIMO
DC-HSDPA+MIMO (3GPP R9/ Huawei RAN13)
combines DC-HSDPA and MIMO. It can provides:
Higher peak date rate
Higher system capacity
Better coverage for cell-edge users
Lower time delay
Page81
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
5MHz 5MHz
Carrier 1 Carrier 2 f
The two carriers
are adjacent.
Carrier 1
Carrier 2
The two carriers cover
the same area.
The two carriers both
use the multi-antenna
technology.
Downlink peak rate
up to 84 Mbit/s
Data is sent to the UE
simultaneously over two
adjacent carriers in MIMO
mode.
Main Idea of DC-HSDPA+MIMO
Page82
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Application Scenario of DC-HSDPA+MIMO
DC-HSDPA+MIMO brings the performance gains of DC-HSDPA and
MIMO. In all scenarios, DC-HSDPA sends data simultaneously over dual
carriers, thereby improving the user rate. DC-HSDPA+MIMO applies to
the following scenarios:
WiFi coverage areas and other hot spots, such as airports and hotels
Universities and other enclosed places, such as courtyards, halls, and
restaurants
Stadiums, arts centers, and other surrounded scenarios
Malls, markets, and other densely populated areas
Residential areas where the operator can use the feature as a substitute for
DSL/cables to provide broadband Internet access
Page83
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
HS-DSCH
Category
Maximum
Number of HS-
DSCH Codes
TB Size
Supported Modulations
Simultaneous with Dual
Cell and MIMO
Operation
Category 25 15 23370 QPSK, 16QAM
Category 26 15 27952
Category 27 15 35280 QPSK, 16QAM, 64QAM
Category 28 15 42192
Adaptation Requirements: UE Capability
The following table shows the UE categories supporting DC-
HSDPA+MIMO.
Page84
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Purpose of E-DPCCH Boosting
This feature improves the multipath search and channel
estimation performance during high-speed data transmission.
With this feature the maximum uplink user throughput over
HSUPA increases to 11Mbit/s.
While ensuring QoS, this feature increases the uplink capacity
over HSUPA by minimizing the load overhead on each uplink
channel.
Page85
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Main Idea of E-DPCCH Boosting
Page86
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
DC-HSUPA Introduction
DC-HSUPA is a 3GPP defined technology that combines the multi-
carrier technology and HSUPA in the uplink. DC-HSUPA significantly
increases the uplink rate, greatly improving user experience.
Page87
NodeB
UE(Cat8,9)
E-DCH F2
E-DCH F1
Adja
cen
t C
arr
ier
DC-HSUPA
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
DC-HSUPA Principles
Page88
DC-HSUPA allows a UE to transmit data simultaneously on two uplink
adjacent carriers that provide the same coverage.
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Improvements
DC-HSUPA has the following improvements compared to SC-HSUPA:
Higher user throughput
Reduced delay of best effort (BE) services
The improvements help operators maintain a competitive edge by
providing a better user experience and higher network service quality.
DC-HSUPA is currently used for high-speed packet switched (PS)
streaming services and BE services.
Page89
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Channel Mapping
In DC-HSUPA operations, two E-DCH transport channels and two HS-
DSCH transport channels need to be configured for the UE because
DC-HSUPA requires that DC-HSDPA be used in the downlink.
Page90
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
UE Categories
In 3GPP Release 9, E-DCH categories 8 and 9 are introduced to
support DC-HSUPA
Page91
Category
Maximum
Number of E-
DCH Codes
Transmitted per
Transport Block
Minimum
Spreading
Factor
Support for
10 and 2 ms
TTI E-DCH
Maximum
Number of Bits
of an E-DCH
Transport Block
Transmitted
Within a 2 ms
E-DCH TTI
High Order
Modulation
Capability of
UE in Dual-
Carrier Mode
Max Bit
Rate
8 4 SF2 2 ms TTI 11484 - 11.5
Mbit/s
9 4 SF2 2 ms TTI 22996 Uplink
16QAM 23 Mbit/s
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
1. DB-HSDPA+MIMO+64QAM
2. 4C+MIMO+64QAM
3. Flexible DC/DB-HSDPA
Page92
HSPA+ in 3GPP R10/ Huawei RAN15
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
DB-HSDPA
The DB-HSDPA feature enables a UE to simultaneously establish
HSDPA connections in two inter-band co-coverage cells. The two cells
form a DB-HSDPA cell group
Page93
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
DB-HSDPA Cell Group
The two cells in a DB-HSDPA cell group must meet all of
the following requirements:
Page94
Restrictions
1
The two cells operate in different frequency bands and the
bandwidth does not exceed 5 MHz. The combination of the
frequency bands must comply with those listed in next page
2 The two cells belong to the same sector of a NodeB and have the
same coverage
3 The two cells are in the same downlink resource group of a NodeB
4 The two cells have the same time offset (specified by the TCELL
parameter)
5 The two cells support HSDPA and Downlink Enhanced L2
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
DB-HSDPA Frequency Bands
Page95
DB-HSDPA
Configuration
Combination of Frequency
Bands
Uplink
Frequency
Band
Downlink
Frequency
Band
1 I + VIII (2100 MHz + 900 MHz) I or VIII I and VIII
2 II + IV (1900 MHz + AWS) II or IV II and IV
3 I + V (2100 MHz + 850 MHz) I or V I and V
4 I + XI (2100 MHz + 1500 MHz) I or XI I and XI
5 II + V (1900 MHz + 850 MHz) II or V II and V
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Benefits of DB-HSDPA
Support dual band
Increase single-user throughput
Page96
Single-user
28 Mbit/s without 64QAM
42 Mbit/s with 64QAM
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
DB-HSDPA + MIMO
In RAN15.0, the DB-HSDPA+MIMO feature supports the
following configurations:
Only one carrier in a DB-HSDPA cell group is configured to support
MIMO. The theoretical peak rate of this configuration is 63 Mbit/s
Both carriers in a DB-HSDPA cell group are configured to support
MIMO. The theoretical peak rate of this configuration is 84 Mbit/s
Page97
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Benefits of DB-HSDPA + MIMO
Increased single-user peak rate
Compare with DB-HSDPA or single carrier MIMO, DB-HSDPA +
MIMO increase single-user peak rate
Without 64QAM: from 28 Mbit/s to 56 Mbit/s
With 64QAM: from 42 Mbit/s to 84 Mbit/s
Increased cell capacity
According to simulation results, system throughput is increased by
about 10%-20%
Page98
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
4C-HSDPA+MIMO
The basic principles of 4C-HSDPA+MIMO are the same as those of 4C-
HSDPA
4C-HSDPA+MIMO allows a combination of 4C-HSDPA and
MIMO+64QAM. 4C-HSDPA+MIMO uses a maximum of four carriers
enabled with MIMO+64QAM for the HSDPA transmission of a UE,
which increases the UE data rate and system resource utilization
Page99
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Combination of Frequency Bands and
Frequencies
3GPP limits on the frequency bands and frequencies that can
be used by 4C-HSDPA
Page100
4C-HSDPA Configuration
in Single-Band Scenario Operating Band
Number of Downlink
Carriers
I-3 I 3
4C-HSDPA configuration in single-band scenarios
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Combination of Frequency Bands and
Frequencies (Cont.)
Page101
4C-HSDPA
Configuration in
Dualband
Scenarios
Uplink
Band
Downlink
Band A
Number of
Downlink
Carriers in
Band A
Downlink
Band B
Number of
Downlink
Carriers in
Band B
I-2-VIII-1 I or VIII I 2 VIII 1
I-3-VIII-1 I or VIII I 3 VIII 1
II-1-IV-2 II or IV II 1 IV 2
II-2-IV-1 II or IV II 2 IV 1
II-2-IV-2 II or IV II 2 IV 2
I-1-V-2 I or V I 1 V 2
I-2-V-1 I or V I 2 V 1
4C-HSDPA configuration in dualband scenarios
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Primary and Secondary Cells
A 4C-HSDPA UE has a maximum of four serving cells
Page102
NodeB
F 1
F 2
UE
F 3
F 4 Secondary cell 3rd
Secondary cell 2nd
Secondary cell 1st
Primary cell Band A
Band B
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Multi-Carrier Cell Group
4C-HSDPA requires three or four inter-frequency co-coverage
cells. These cells are configured as a multi-carrier cell group on
the NodeB side
A multi-carrier cell group must meet the following conditions:
One cell can belong to only one multi-carrier cell group
A multi-carrier cell group consists of a maximum of four cells
Page103
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Requirements for 4C-HSDPA Cells
4C-HSDPA cells in a multi-carrier cell group must meet all of the
following conditions:
They must belong to the same sector of a NodeB
They must have the same time offset (specified by the Tcell
parameter)
One cell can belong to only one multi-carrier cell group
Page104
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
4C-HSDPA+MIMO Cells
4C-HSDPA+MIMO cells have 4C-HSDPA and MIMO enabled.
When a UE uses a 4C-HSDPA+MIMO RB, the UE uses MIMO
only in the 4C-HSDPA cell that has MIMO enabled. When
64QAM+MIMO is enabled, the Primary/Secondary common
Pilot (PSP) mode is recommended, that is, a P-CPICH and an S-
CPICH must be configured
Page105
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Channel Mapping
Page106
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
CQI Feedback
Relationship between the number and MIMO capability of 4C-
HSDPA cells and the spreading factor used by the HS-DPCCH
Page107
Scenario Spreading Factor Used by the
HS-DPCCH
3C-HSDPA (without MIMO) SF256
3C-HSDPA (with MIMO) SF128
4C-HSDPA (with or without MIMO) SF128
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
4C-HSDPA+MIMO RB
4C-HSDPA+MIMO applies to the same types of services as 4C-HSDP
Page108
HSPA+
Technology Cell 1 Cell 2 Cell 3 Cell 4
Peak Downlink Rate
(Mbit/s)
4C-HSDPA+MIMO
4C-HSDPA+MIMO 168
4C-HSDPA+MIMO 4C-HSDPA 147
4C-HSDPA+MIMO 4C-HSDPA 126
4C-HSDPA+MIMO 4C-HSDPA 105
3C-HSDPA+MIMO
3C-HSDPA+MIMO - 126
3C-HSDPA+MIMO 3C-HSDPA - 105
3C-HSDPA+MIMO 3C-HSDPA - 84
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
UE Categories
Page109
HS-DSCH Category 29 30 31 32
Maximum Number of HS-DSCH
Codes Received 15 15 15 15
Minimum Inter-TTI Interval 1 1 1 1
Maximum Number of Bits of an
HS-DSCH Transport Block
Received Within an HS-DSCH TTI 42,192 42,192 42,192 42,192
Total Number of Soft Channel
Bits 777,600 1,555,200 1,036,800 2,073,600
Total Number of Downlink
Carriers 3 3 4 4
Total Number of Downlink
Carriers That Are Configured with
MIMO 0 3 0 4
Supported Modulations Without
MIMO Operation with
Aggregated Carriers
QPSK/16QAM/
64QAM
QPSK/16QAM/
64QAM
QPSK/16QAM/
64QAM
QPSK/16QAM/
64QAM
Supported Modulations with
MIMO Operation and Aggregated
Carriers -
QPSK/16QAM
64QAM -
QPSK/16QAM
64QAM
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Network Impacts
System Capacity
4C-HSDPA slightly increases the cell load in the uplink. The cell load
increase is represented by an increase in the uplink RTWP
4C-HSDPA UEs consume one CE more than SC-HSDPA UEs
A baseband processing board supports more SC-HSDPA UEs than 4C-
HSDPA UEs
Network Performance
Increased single-user downlink throughput
Deteriorated uplink cell edge coverage
Page110
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Requirement of License
The license for 4C-HSDPA has been activated on the NodeB
side
Page111
Feature ID Feature Name License Control Item NE Sales Unit
WRFD-150207 4C-HSDPA 4C-HSDPA (per Cell) NodeB Per Cell
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Example of Cell Group
Example of cell group configuration with and without the
Flexible DC/DB-HSDPA feature
Page112
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Multi-Carrier HSDPA Technologies
Supported
The Flexible DC/DB-HSDPA feature supports the following multi-carrier
HSDPA technologies:
DC-HSDPA or DC-HSDPA+MIMO
DB-HSDPA or DB-HSDPA+MIMO
4C-HSDPA or 4C-HSDPA+MIMO
The Flexible DC/DB-HSDPA feature flexibly allocates different DC-
HSDPA, DB-HSDPA, and 4C-HSDPA groups to different UEs
Page113
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Flexible DC/DB-HSDPA
Example of using the Flexible DC/DB-HSDPA feature and multi-carrier
HSDPA technologies together
Page114
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Cell HSPA+ Capability
Cells in a multi-carrier cell group must have the Flexible DC/DB-HSDPA
feature enabled
If cells in a multi-carrier cell group operate in two different frequency
bands, all the cells in the group must have either the DB-HSDPA or
DB-HSDPA+MIMO feature enabled
In a multi-carrier cell group, cells in the same frequency band must
have either the DC-HSDPA or DC-HSDPA+MIMO feature enabled
Cells that require the 4C-HSDPA feature in a multi-carrier cell group
must have either the 4C-HSDPA or 4C-HSDPA+MIMO feature enabled
Page115
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Benefits
The Flexible DC/DB-HSDPA feature dynamically uses
instantaneous idle resources in a cell, increasing the UE
data rate and system capacity. In the case of three carriers,
this feature increases the UE data rate by about 20%
when UEs are processing burst services
Page116
35pt
32pt
) :18pt
Copyright © 2014 Huawei Technologies Co., Ltd. All rights reserved.
Impacts on DC-HSUPA
The Flexible DC/DB-HSDPA feature does not affect the
configuration of DC-HSUPA
Page117
F1
F2
F3
DC-HSUPA
Group
DC-HSDPA
Group
DC-HSDPA
Group
DC-HSDPA
Group
Thank you www.huawei.com