Owb000901 Ps Cdr Introduction Issue1.0

8/13/2019 Owb000901 Ps Cdr Introduction Issue1.0

1/23

Introduction to CDRs for PS Data Services


2/23

Course Contents

Training.huawei.com

Chapter 1 Introduction to SGSN CDR

Chapter 2 Introduction to GGSN CDR


3/23

CDR Types in SGSN

SM related CDR: S-CDR

MM related CDR: M-CDR

Short message related CDR: S-SMO-CDR

S-SMT-CDR

LCS related CDR: LCS-NI-CDR

LCS-MT-CDR

LCS-MO-CDR

Note: LCS CDR is a new content in B02; only the R4 version can be generated.

Note: At present. China Mobile only requires S-CDRs.


4/23

CDR Formats Supported by SGSN

R98 CDR version: CMCC V130

12.15 V760

R99 CDR version:

32.015 V360

32.015 V3a0

R4 CDR version:

32.215 V440

The CDR formats must match with the formats supported by the

remote CG.


5/23

Major Contents of S-CDR

M field:Record Type

Served IMSI

Served MSISDN

SGSN Address

Charging ID

GGSN Address Used

APN NI

PDP Type

List of Traffic Data Volumes

Record Opening Time

Duration

Cause for Record Closing

APN OI

C field:Network Initiated PDP Context

System Type

Served IMEI

Served PDP Address

SGSN Change

Record Sequence Number

RNC Unsent Downlink Volume

CAMEL Information

charging characteristics

O field:Served MSISDN

MS Network Capability

Routing Area

Local Area Code

Cell Identifier

APN Selection ModeDiagnostics

Node ID

Record Extensions

Local Record Sequence Number


6/23

Descriptions of Field Properties

1. Field property in R98 and R99 versions M: must for CDR

O: optional for CDR according to configurations

C: optional for CDR according to specific conditions

2. Field property in the R4 version

M: must for CDR

OM : optional for CDR according to configurations

OC : optional for CDR according to configurations and specific conditions

C : optional for CDR according to specific conditions


7/23

Descriptions of Traffic Field

QoS Requested = QoS1

QoS Negotiated = QoS1

Data Volume Uplink = 1Data Volume Downlink = 2

Change Condition = QoS change

Time Stamp = TIME1

QoS Negotiated = QoS2

Data Volume Uplink = 5

Data Volume Downlink = 6Change Condition = Tariff change

Time Stamp = TIME2

Data Volume Uplink = 3

Data Volume Downlink = 4

Change Condition = Record closedTime Stamp = TIME3

Container

QoS1+Tariff1 uplink = 1. downlink = 2 1



QoS1 uplink = 1. downlink = 2 1

QoS2 uplink = 8. downlink = 10 2+3

Tariff1 uplink = 6. downlink = 8 1+2

Tariff2 uplink = 3. downlink = 4 1

List of traffic data volumes:

Uplink/downlink traffic

Change conditions and time stamp

The traffic does not include any GPRS protocol head.

Avoid repeated recording of memory data in the INTER-RAU process.

Data resent due to the air interface (RLC/LLC) will not be recorded.


8/23

S-CDR and Partial CDR

Each PDP activation will generate a complete CDR. Due to various reasons.

however. the complete CDR might comprise many partial CDRs. The combination ofpartial CDRs is made via the CG or the BS.

Reason for S-CDR closing

termination of PDP context

SGSN change (inter-SGSN routing area update including system handover)

any abnormal release Note: CDR closing caused by abnormal interruption is now regarded normal

activation termination.

Reason for partial S-CDR generation

data volume limit

time (duration) limit

maximum number of charging condition changes

management intervention

The other limits can be configured in the data.


9/23

Descriptions of Charging Characteristics

Introduction to charging characteristics:

P0~P3 represents Hotbilling, Flatrate, Prepaid and Norma. l

In B1~B12. B01 contains reserved fields; B02 represents 12 charging

activities.

7 6 5 3 2 1 04

Bits

P0P1P2P3

B5B6B7B8

Octets

1

2 B11B12 B9B10

B1B2B3B4


10/23

Charging Characteristic Selection Sequence

B02 charging characteristic selection sequence:

Charging data in the PDP subscription data:

This characteristic is configured in the HLR. Each PDP

context can independently configure a charging characteristic.

Charging characteristic in the subscriber subscription data

This characteristic is configured in the HLR. Each subscriber

should adopts this charging characteristic before PDP

activation.

Default charging characteristic in compliance with MNC and MCC

This characteristic is configured in the SGSN. A chargingcharacteristic can be configured for each PLMN network.

Default charging characteristic

This characteristic can be configured in case none of the

above characteristics is configured.

High..

.

.

.

.

.

.

Low


11/23

Charging Activities

The following charging activities are supported:

QoS modifications originated at the network side are prohibited.

Subscribers not belonging to the network are prohibited to use VPLMNs

GGSN activation.

Deactivating idle PDP The SGSN configures the address of a specific short message center

(SMC). Intra-network subscribers using this SMC to transmit short

messages will not generate S-SMO-CDRs.

The CG address is added in the network. CDRs will be sent to this CG in

priority.


12/23

System configuration

partial S-CDR generated periodically; the period threshold is 30

(minutes).

Partial S-CDR generated by traffic; the traffic threshold is 200 (K).

Partial S-CDR generated by charging condition changes; the

charging condition change threshold is 3 (times).

The present day is a working day. A rate time segment. 16: 00~17:

00. is added in each working day.

Case 1: Generation of S-CDR


13/23

Service execution process

16: 10: PDP activated

16: 10~16: 40: uplink and downlink traffic of PDP is less than 200K

16: 40~16: 50: uplink and downlink traffic of PDP reaches 200K.

16: 55: MS originates PDP change. change QoS

17: 05: MS originates PDP change. change QoS

1 7: 10: PDP deactivated



14/23

CDR generation process:

16: 40: The first partial S-CDR is generated. The CDR is closed due to the

time limit. The period is over 30 minutes.

16:50: The second partial S-CDR is generated. The CDR is closed due to

the data volume limit. The traffic is over 200K.

17:05: The third partial S-CDR is generated. The CDR is closed due to

maximum number of charging condition changes. The charging conditions

have changed for 3 times.

17:10: The fourth partial S-CDR is generated. The CDR is closed due to

normal release. Conditions for normal CDR closing are satisfied.



15/23

Case 2: Charging Characteristic Management

GGSNGGSN

SGSN

Local subscriberRoaming subscriber Visiting subscriber

46000

46001


16/23

Charging characteristic selection case 1:1. A subscribersIMSI is 46001XXXXXXXXXX.

2. The subscribers PDP subscription data and subscriber subscription

data in the HLR is illegal.

3. In the OFI configuration of the present SGSN, MNC is 00 and the MCC

is 460.

4. The APN OI used in subscriber activation is MNC001.MCC460.GPRS.

5. Commands for charging characteristic configurations:

MOD CHGCDR: RCC=NORMAL;

The charging characteristic in S-CDR is normal.

Case 2: Charging Characteristic Management


17/23

Course Contents

Training.huawei.com

Chapter 1 Introduction to SGSN CDR

Chapter 2 Introduction to GGSN CDR


18/23

CDR Types Supported in GGSN

There is only G-CDR output in GGSN. R98 CDR version:

CMCC V130

GSMV760

R99 CDR version

TS32015V390, TS32015V3A0

R4 CDR version

TS32215V440

The CDR formats must match the CDR formats supported by the

remote CG.


19/23

Major Contents of G-CDR

M fieldRecord Type

Served IMSI

Served MSISDN

SGSN Address

Charging ID

GGSN AddressAPN NI

Served PDP Address

List of Traffic Data Volumes

Record Opening Time

Duration

Cause for Record Closing

Record Extensions

Local Record SequenceNumber

SGSN PLMN Identifier

O fieldNetwork Initiated PDP Context

PDP type

APN Selection Mode

Diagnostics

Node ID

C fieldDynamic Address Flag

Record Sequence Number

charging characteristics


20/23

G-CDR and Partial CDR

Each PDP activation will generate a complete CDR. Due to various

reasons. however. the complete CDR might comprise many partial CDRs.The combination of partial CDRs is made via the CG or the BS.

Reason for G-CDR closing

termination of PDP context

any abnormal release

Note: CDR closing caused by abnormal interruption is now regarded

normal activation termination.

Reason for partial G-CDR generation

data volume limit

time (duration) limit

maximum number of charging condition changes

management intervention

SGSN handover

The other limits can be configured in the data.


21/23

GGSN Charging Characteristic Management

GGSN

SGSN

46000

46001

SGSN

Local subscriberRoaming subscriber

Visiting subscriber


22/23

Other Charging Modes

In addition to providing G-CDR, the GGSN supports Radius charging,

content charging and prepaid charging

Radius charging

In the activation process, the GGSN will send a charging request

packet to the Radius. charging is activated upon the response from

the Radius. During the service process, the GGSN will always inform

the Radius about data packet usage.

Content charging

Content charging is to know subscribersusage of different services

by analyzing subscribers service IP data packets. The charging

center can provide different rates to different services.

Prepaid charging

Prepaid charging is to send the service usage information from the

GGSN to the SCP for charging during the activation process.


23/23

Documents

Owb000901 Ps Cdr Introduction Issue1.0