11-OWB600206 SGSN9810 Gb Interface Data Configuration ISSUE1.0

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Copyright © 2006 Huawei Technologies Co., Ltd. All rights reserved.

SGSN9810 Gb Interface Data Configuration


References

3GPP TS 48.014

SGSN9810 Operation Manual Data Configuration

Volume I(V8.60)


Contents

1. Basic Concept

2. Gb over FR

3. Gb over IP


Gb Interface

Gb interface is the interface between SGSN and

PCU

Gb interface is a mandatory interface in the GPRS

network


Gb Interface Protocol Stack __ User Plane

The Gb interface protocol stack is composed of SNDCP, LLC, BSSGP, NS, L1bis.

Relay

NetworkService

GTP-U

Application

IP

SNDCP

LLC

RLC

MAC

GSM RF

SNDCP

LLC

BSSGP

L1bis

RLC

MAC

GSM RF

BSSGP

L1bis

Relay

L2

L1

IP

L2

L1

IP

GTP-U

IP

Um Gb Gn GiMS BSS SGSN GGSN

NetworkService

UDPUDP


Gb Interface Protocol Stack __Control Plane The Gb interface protocol stack is composed of

GMM/SM, LLC, BSSGP, NS, L1bis.

BSSGPRelay

GMM/SM

LLC

RLC

MAC

GSM RF

GMM/SM

LLC

BSSGP

L1bis

Um GbMS BSS 2G-SGSN

NetworkService

RLC

MAC

GSM RF L1bis

NetworkService


The Relevant Hardware For Gb Over FR The Gb protocol stack is processed by the UGBI, UEPC, UFEU

and UEPI

E1 acts as its physical connection that is extended from UEPI

UFEU performs the Frame Relay function

UEPC is an optional pinch board that can provide the

encryption and compression function

UGBI performs the NS, BSSGP, LLC ,SNDCP and GMM/SM

functions


Concept of Gb Over FR E1

E1 is the physical cable connecting BSS with SGSN. BSS can connect

with SGSN either directly or through the intermediate FR network.

BC

BC is the bearer channel of frame relay, corresponding to the timeslot

group of E1/T1

The whole E1/T1 line can be either configured as one BC, or divided into

multiple BCs. But it’s better to configure as many timeslots as possible

in one BC.

For easy local management, BCs are distinguished by numbers, which

are called BCID (BC Identification).


E1 and BCBC1(TS1~TS3)

BC2(TS1~TS3)E1 linkTS0~TS31

•SGSN

E1 linkTS0~TS31

•BSS

•TS3•TS2•TS1

BC1(TS1~TS3)

BC2(TS4~TS6)

NSVE 1

NSVC2

NSVE 3

NSVC4•TS6

•TS4

•TS5


NSVC

NS-VC

NS-VC is the virtual link provided by NS layer for BSSGP

layer through which NS transmits the data of BSSGP

layer

NS-VC is identified by NS-VCI, which is unique in SGSN

NS-VC in SGSN corresponds to NS-VC in BSS one by

one, and their IDs are the same


Concept Of Gb Over FR

PVC

PVC refers to the permanent virtual connection of the

frame relay.

In one BC, a PVC is differentiated from others by its

number, which is called DLCI (Data Link Connection ID).

In SGSN9810, each NSVC link is corresponding to one

FR link.

The command “ADD NSVC “ is used to add a NSVC link

and FR link simultaneously.


NSE

NSE

Network service entity (NSE) is identified by NSEI, its ID

must as same as the PCU configuration.

NSE manages a group of NS-VCs, and corresponding a

group of cells.

The Sub-network layer can be realized by FR protocol or

IP link.


BVC

BVC

BSSGP virtual connection is used in the BSSGP layer.

There are three kinds of BVC: Sig (signaling) BVC, PTP

(point to point) BVC and PTM (point to multipoint) BVC


Network Service Entities

SGSNSGSN

(BVCI 1-4)(BVCI 1-4)

GGbb

(BVCI 5-8)(BVCI 5-8)

BVC = BVCI + NSEI

BBSSCC

BVCI 6BVCI 6

BVCI 5BVCI 5

BVCI 7BVCI 7

BVCI 8

BVCI 8

BBSSCC

BVCI 2BVCI 2

BVCI 1BVCI 1

BVCI 3BVCI 3

BVCI 4

BVCI 4

NSEI-1NSEI-1

NSEI-2NSEI-2


Relationship Between BVC,CELL And NSE Cells correspond to PTP BVCs one by one. One cell

is only subordinating to one NSE, but one NSE

include multiple CELLs

A Sig BVC manages a group of cells in a NSE. NSE

and Sig BVC is one to one correspondence. So one

Sig BVC manages multi PTP BVC


Gb Over IP

Gb BSS

LLC

BSSGP

L1

SGSN

NS

L1

MAC

BSSGP RLC

RELAY

NS

Sub-Network Service / Sub-Network Service protocol

Network Service Control / Network Service Control protocol

Network Service

The 3GPP protocol specifies that the Sub-NS uses the FR network or IP

network as its bearer mode


The Relevant Hardware For Gb Over IP

The Gb protocol stack is processed by the UGBI.

The UFEU and UEPI need not configure in case Gb

over IP

The UDP and IP layer are realized by UGFU board.

The UPIU and it’s pinch board UEEC or UEFC provide

the physical port for Gb interface to connect with PCU.


Concept Of Gb Over IP

IPNSVC:

In the Gb over IP network, each NS-VC link is identified

by a quaternary group including the following:

1 IP address of the SGSN

2 UDP port number of the SGSN

3 IP address of the BSS

4 UDP port number of the BSS


Contents

1. Basic Concept

2. Gb over FR

3. Gb over IP


Data Planning Rules

NSE

NSVC NSVC NSVC

DLCI DLCI DLCI

BC BC

E1

1:N

1:1

N:1

N:1

The BCID must be unique on an E1/T1 port. It need not be consistent with that of the peer end.

The NSVC ID must be consistent with the PCU. It must be unique within the SGSN.

The NSEI must be consistent with the PCU. It must be unique within the SGSN.

The DLCI must be consistent with the peer node. It must be unique within the BC.

NSVC

DLCI

BC

E1


Gb Interface Networking

NSEI=1

BSS1

BSS2

460010001010001

460010001010002

460010001010003

460010002010001

460010002010002

460010002010003

Port 0

Port 1

1

2

34

SGSNSGSN

UGB I

UGB I

UGB I

U E P I

U E P I

U E P I

0/0

0/1

0/2

TS=1-10,DLCI=100, NEVCI=11

Port 1

Port 0


NSEI=2

TS=1-10,DLCI=100,

NEVCI=12



Network Data

Link Link

No.No.

SubraSubra

ck Nock No

SloSlo

t t

NoNo

Port Port

NoNo

BCIDBCID TimTim

e e

slot slot

DLCIDLCI NSVCNSVC

II

NSENSE

II

BSSID

1 0 0 0 0 1~1

0

100 11 1 BSS1

2 0 0 1 0 4~2

0

100 21 2 BSS2

3 0 1 0 0 1~9 100 12 1 BSS1

4 0 1 1 0 2~1

7

100 22 2 BSS2


Configuration Step

Step Action Command

1Add the relation

boardsADD BRD

2configure the

information of E1 link

ADD UEPIUTPICFG

3Add the E1/T1

ports.ADD E1T1CFG

4 Add the BCs. ADD BC

5 Add the NS-VCs. ADD NSVC

6 Add the NSEs. ADD NSE


Step 1: Add The Relative Boards ADD BRD:

For the Gb over TDM, UEPI, UGBI,UFEU should be

added.

UEPC is used to encrypt and compress the data, it

should be added depending on the real network

UGBI board woke in N+1 mode


Step 1: Add The Relevant Boards ADD BRD:

Example:

ADD BRD: SRN=0, SN=0, BP=IO, BT=UGBI, RS=ACTIVE,

PSRN=0, PSN=2, PMCDT=UFEU, SPEC=B, BCKBT=UEPI,

BCKST=ACTIVE;

ADD BRD: SRN=0, SN=1, BP=IO, BT=UGBI, RS=ACTIVE,

PSRN=0, PSN=2, PMCDT=UFEU, SPEC=B, BCKBT=UEPI,

BCKST=ACTIVE;

ADD BRD: SRN=0, SN=2, BP=IO, BT=UGBI, RS=STANDBY,

PMCDT=UFEU, SPEC=B, BCKBT=UEPI, BCKST=STANDBY;


Step 2: Configure E1 Workmode ADD UEPIUTPICFG:

This command is used to configure the E1/T1 clock mode and

the work mode

Example:

ADD UEPIUTPICFG: SRN=0, SN=0, CL=SL, BT=UFEU_Plus,

BM=UNBALANCE;


BM=UNBALANCE;


BM=UNBALANCE;


Step 3: Configure E1 Port ADD E1T1CFG:

This command is used to define the information of the port.

Example:

ADD E1T1CFG: SRN=0, SN=0, PN=0, LKFRMT=DF, LKCT=HDB3;





Step 4: Configure The BC ADD BC :

This command is used to define BC.

Example: ADD BC: SRN=0, SN=0, PN=0, BCID=0, BTS=1, ETS=10,

DLCIT=1, PROTOCOL=Q933, BWCNTL=NO, MODE=DCE;

ADD BC: SRN=0, SN=0, PN=1, BCID=0, BTS=4, ETS=20, DLCIT=1, PROTOCOL=Q933, BWCNTL=NO, MODE=DCE;




DTE/DCE

BC

DCE

DCE

DTE

DTE

BSS SGSN

BSS SGSN

DTE DTE

FR

FR

Scenario 1

Scenario 2


Step 5: Configure The NSVC ADD NSVC:

This command is used to define NSVC.

Example: ADD NSVC: OTHERNODE="to BSS1", NSVCI=11, NSEI=1, SRN=0,

SN=0, PN=0, BCID=0, DLCI=100;

ADD NSVC: OTHERNODE="to BSS2", NSVCI=21, NSEI=2, SRN=0, SN=0, PN=1, BCID=0, DLCI=100;




Step 6: Configure The NSE

ADD NSE:

This command is used to define NSE.

Example:

ADD NSE: OTHERNODE="to BSS1", NSEI=1, SRN=0,

SN=0, BSSID=1;

ADD NSE: OTHERNODE="to BSS2", NSEI=2, SRN=0,

SN=1, BSSID=2;

– NSE

~Negotiated with PCU


Contents

1. Basic Concept

2. Gb over FR

3. Gb over IP


Case

IP network

IPVLINK

IP route

UGBI

Ethernet Port

UFCU

UPIU

UGFU

UPIU

URCU/UBIU

Logical IP

IP of PCU1

10.20.20.1:3322

/10.20.20.2:3323

IP of PCU2

10.20.30.1:2244/

10.20.30.2:2245

IP of UPIU:10.30.30.1/10.30.30.2

IP of UGFU: 10.10.10.1/10.10.11.2

Router

IP of router: 10.30.30.3

DATA UGFU

IP

PCU IP

User data and Control signaling

IPVlink

PCU1 PCU2

UDP port: 3344, 3345


Slot Number of the Boards

Board

Subrack

SlotActive/standby

Back board

PMCUP

PMCDWN

UGBI 0 0 A 　　　UGBI 0 1 A 　　　UGF

U3 10 A UPIU

UEEC 　 UAIC

UGFU

3 12 A UPIUUEE

C 　

UAIC


IP Parameter Data type Data item value

IP port and address IP port and address of PCU of PCU

Peer IP address, Port of PCU1

10.20.20.1:3322


10.20.20.2:3323


10.20.30.1:2244


10.20.30.2:2245

IP address of SGSN IP address of SGSN (UPIU port)(UPIU port)

Port(3/10/1) 10.30.30.1Port(3/11/1)Port(3/12/1) 10.30.30.2

Port(3/13/1)

IP address of Gb IP address of Gb interface logical IP)interface logical IP)(UGFU IP for Gb)(UGFU IP for Gb)

UGFU(3/10) 10.10.10.1UGFU(3/11)UGFU(3/12) 10.10.11.2UGFU(3/13)

UDP port for UGBIUDP port for UGBI UGBI(0/0) 3344UGBI(0/1) 3345


IP NSVC

UGBI(0/0)

UGBI(0/1)

PCU1(NSEI=1)

IP NSVC1

IP NSVC2

IP NSVC3

IP NSVC4

UGBI(0/0)

UGBI(0/1)

PCU2(NSEI=2)

IP NSVC5

IP NSVC6

IP NSVC7

IP NSVC8


IP NSVC Data

IP NSVC

LINK

NSEI NSVCI UGBI SGSN IP

(UGFU)

SGSN

PORT

PCU IP PCU

PORT

1 1 11 0/0 10.10.10.1 3344 10.20.20.1 3322

2 1 12 0/0 10.10.11.2 3344 10.20.20.2 3323

3 1 13 0/1 10.10.10.1 3345 10.20.20.1 3322

4 1 14 0/1 10.10.11.2 3345 10.20.20.2 3323

5 2 21 0/0 10.10.10.1 3344 10.20.30.1 2244

6 2 22 0/0 10.10.11.2 3344 10.20.30.2 2245

7 2 23 0/1 10.10.10.1 3345 10.20.30.1 2244

8 2 24 0/1 10.10.11.2 3345 10.20.30.2 2245


IPVLNK

UDP Port 3344 for UGBI(0/0);

UGBI(0/0)

UGBI(0/1)

UGFU(3/10)

UGFU(3/12)

IPVLNK1

IPVLNK2

IPVLNK3

IPVLNK4

UDP Port 3345 for

UGBI(0/1);

10.10.11.2

10.10.10.1


IPVLNK

IPVLNK

IP virtual link

It is an internal communication channel established

between UGBI and UGFU

Identify

Each IPVLNK is identified by (IP, Port; slot of UGBI)

Each IPVLNK will binding with a specific UGBI board. The

banding ensure the system forward the data between a

UGFU and UGBI.


IPVLNK

IP VLNK UGBI UGFU IP UDP PORT

1 0/0 10.10.10.1 3344

2 0/0 10.10.11.2 3344

3 0/1 10.10.10.1 3345

4 0/1 10.10.11.2 3345


Configuration StepsStep Action Command

1. Configure the related boards.1. Configure the related boards.1 Add the UGBI ADD BRD

2Add the UGFU and UPIU

boardsADD BRD

2. Configure the IP routes.2. Configure the IP routes.

3 Set the work mode SET UPIU_PORT

4Configure the public network segments.

ADD PUBNWIP

5Configure IP addresses for

board interfaces.ADD IFIP

6Configure the static

routes.ADD IPRT


Configuration StepsStep Action Command

3. Configure the Gb interface.3. Configure the Gb interface.

7Configure the IP address

for the Gb interface.ADD BRDIP

8 Add the IP virtual links. ADD IPVLNK

9 Add the NS-VCs. ADD IPNSVC

10Add the IP endpoint weight for the Gb

interface.

ADD GBIPEWEIGHT

11Add the signaling

entities.ADD NSE


Step 1: Add UGBI Board

ADD BRD

This command is used to add UGBI boards

If it is Gb over IP, the UFEU and UEPI need not be configured

Example

ADD BRD: SRN=0, SN=0, BP=IO, BT=UGBI, RS=ACTIVE, SPEC=B;

ADD BRD: SRN=0, SN=1, BP=IO, BT=UGBI, RS=ACTIVE, SPEC=B;

ADD BRD: SRN=0, SN=2, BP=IO, BT=UGBI, RS=STANDBY,

SPEC=B;


Step 2: Add UGFU Board

ADD BRD

This command is used to add UGFU and the related

boards ， for Gb IP data forwarding.

This boards should be configured when configure Gn

interface

The IP address configured in this command is the IP

address of Iu interface and Gn interface. For the IP

address of Gb, will be configured by ADD BRDIP

command.


Step 3: Set Work Mode SET UPIU_PORT

Ethernet port of UPIU board can work in 1+1 mode or internal UGFU

communication mode

In this case, 1+1 mode should be chosen for these two Ethernet ports

Example

SET UPIU_PORT: MSRN=3, MSN=10, MPN=1, SSN=11, SPN=1,

PT=EETH, WM=MS, ND=TRUE;

SET UPIU_PORT: MSRN=3, MSN=12, MPN=1, SSN=13, SPN=1,

PT=EETH, WM=MS, ND=TRUE;

– WM

~ MS master and slave mode

~ UC internal communication mode


Step 4:Configure Public IP Segment Of UPIU ADD PUBNWIP

This command is used to configure the public network

IP for UPIU that make the IP of UPIU can be in the same

subnetwork

Example

ADD PUBNWIP: IP="10.30.30.0", MSK="255.255.255.0";

– IP

~Public network segment Same subnetwork

Router

UP

IU

UP

IUU

PIU


Step 5:Configure IP Address Of UPIU ADD IFIP

This command is used to configure the IP for UPIU

Example

ADD IFIP: SRN=3, SN=10, PN=1, IP="10.30.30.1",

MSK="255.255.255.0", DESC="For Gb";

ADD IFIP: SRN=3, SN=12, PN=1, IP="10.30.30.2",

MSK="255.255.255.0", DESC="For Gb";

– IP

~IP address of UPIU physical Port


Step 6:Configure IP Route

ADD IPRT

This command is used to configure the IP route for UPIU

Example

ADD IPRT: IP=“10.0.0.0", MSK=“255.0.0.0",

GATE="10.30.30.3";

– GATE

~The router’s IP address


Step 7:Configure Gb’s IP AddressADD BRDIP

This command is used to configure the IP address

for Gb interface

Example ADD BRDIP: SRN=3, SN=10, IPT=IPV4, IPV4="10.10.10.1"; ADD BRDIP: SRN=3, SN=10, IPT=IPV4, IPV4="10.10.10.1";

ADD BRDIP: SRN=3, SN=12, IPT=IPV4, IPV4="10.10.11.2";ADD BRDIP: SRN=3, SN=12, IPT=IPV4, IPV4="10.10.11.2";

– IPV4

~ It is a logical IP configured in UGFU board

~ It is the IP address of Gb over IP

DATA UGFU IP PCU IP

DATA PCU IP UGFU IP

PCU

PCU


Step 8:Configure IPVLNK

ADD IPVLNK

This command is used to configure IPVLNK to binding a UGBI

board with a UGFU board.

After the binding, all packet data of a specific UGBI board will

process and forward by the corresponding UGFU board.

Example – IPVLINK for UGBI (0/0)

ADD IPVLNK: HSRN=3, HSN=10, IPT=IPV4, IPV4="10.10.10.1",

PT=UDP, LPN=3344, SVT=GB, SSRN=0, SSN=0;




Step 8:Configure IPVLNK

ADD IPVLNK

Example – IPVLINK for UGBI (0/1)





– IPV4

~The IP address of UGFU

~This IPVLNK is identified by (IP, Port, Slot of UGBI)


Step 9:Configure IP NSVC

ADD IPNSVC:

This command is used to add a NSVC link

The link is identified by vector

(SGSN IP, Port; PCU IP, Port)

We can configure several IP NSVC for one NSE.


Step 9:Configure IP NSVC ADD IPNSVC:

Example – configure 4 NSVC to PCU1

ADD IPNSVC: OTHERNODE="TO bss1", NSVCI=11, NSEI=1, SRN=0, SN=0,

IPT=IPV4, LIPV4="10.10.10.1", LUP=3344, RIPV4="10.20.20.1", RUP=3322;








Step 9:Configure IP NSVC ADD IPNSVC:

Example – configure 4 NSVC to PCU2










Step 10:Configure Load Weight

ADD GBIPEWEIGHT :

This command is used to configure weigh for each PCU

The load weight is based on the IP endpoint, not the NSVC

Example – configure the weight for PCU 1

ADD GBIPEWEIGHT: IPT=IPV4, RIPV4="10.20.20.1",

RUP=3322, NSEI=1, DW=200, SW=200;


RUP=3323, NSEI=1, DW=100, SW=100;

DW=200

SW=200

DW=100

SW=100


Step 10:Configure Load Weight

ADD GBIPEWEIGHT :

Example – configure the weight for PCU 2


RUP=2244, NSEI=2, DW=200, SW=200;


RUP=2245, NSEI=2, DW=100, SW=100;

– RIPV4/RUP

– DW

– SW


Step 11:Configure NSE ADD NSE:

This command is used to add a NSE

Each NSE contain several NSVC link

Example – add a NSE for PCU 1 ADD NSE: OTHERNODE="TO bss1", NSEI=1, SRN=0, SN=0,

BSSID=1, BT=IP ;

Example – add a NSE for PCU 2 ADD NSE: OTHERNODE="TO bss2", NSEI=2, SRN=0, SN=1,

BSSID=2, BT=IP;

– NSE

– BT

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11-OWB600206 SGSN9810 Gb Interface Data Configuration ISSUE1.0

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