BSSITG_S12_GPRS and EGPRS Integration_in_BSC_v4.0.ppt

7/27/2019 BSSITG_S12_GPRS and EGPRS Integration_in_BSC_v4.0.ppt

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GPRS/EGPRS

Integration in BSC

BSS S12


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GPRS/EGPRS Integration in BSC

Create Gb Interface within the BSC

Enable GPRS on cell level

Enable EGPRS on cell level

Handle dynamic Abis pools

After studying this module you should be able to:

Refer to S12 Documentation:

Integrate\ Gb Interface

Integrate\ Gb interface\ Activating and testing BSS9006:GPRS


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Gb over Frame Relay interface configuration

SGSNGb Interface

GSW

PAPU

ET

BSCGSW

BCSU

ET

PCU


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Steps to enable GPRS in BSC (FR)

Connect the Gb interface ET

Create and Activate Gb Interface

Activating GPRS/EGPRS on a cell level

End

Start


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Connect the Gb interface ET

Create ET plug-in unitno

yes

PIU exists?

Start

Check ET settings and change them if necessary

ET connected tothe right IF

Connect ETno

yes

Change working state

End


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Identify connected ET-Interface

< ZWUP:32&40&96;

LOADING PROGRAM VERSION 18.10-0

EXECUTION STARTED

BSC3i BSC11 2005-04-21 10:03:36

PCM COMP PROC INFO_1 INFO_2 INFO_3 ADD_INFO PAGE1

32 BCSU SC7PRB ETPCM - - VIRTUAL_PCMS33H 01B1H 0000H 0000H 0100H 1280

40 BCSU ERATES ETPCM - -33H 010AH 0000H 0000H 0000H

96 BCSU ABIPRB ETPCM - - VIRTUAL_PCMS30H 01BFH 0000H 0000H 0000H 1792 - 1799

TOTAL OF 3 PCM CIRCUITS


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Transmission solutions of Gb Interface (FR)

ET

TransmissionNetwork

ET

BSC

TCSM

MSC

Frame Relay

network

ET

ET

ET

ET

SGSN

1

2

3


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8 2007 Nokia 13-495932 v1.0

Steps to integrate and activate the Gb IF (FR)

Create Frame Relay bearer channel

Modify local Bearer Channel signalling parameter

Create Network Service Virtual Connection

End

Start

Change State of Network Service Virtual Connection


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Gb-Interface Protocol (FR)

FR

SGSNBSC

L1bis L1bis

BSSGP BSSGP

LLC

SNDCP

Network Servicecontrol part

FR


Gb-IF

NetworkService

SubnetworkDependentConvergenceProtocol

Layer 1 physical connection

Logical Link Control

BSS GPRS protocollayer

Frame Relay

NetworkServicecontrol part

PhysicalLayer

Stateof

Services

GPRSSignalling


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Gb-Interface Identifier (FR)

BVCI

DLCI

NSEINS-VCI

BC

BSSGP

FR

L1bis


BSC

BSSGP Virtual Connection Identifier

Network Service EntityNetwork Service Virtual ConnectionIdentifierData Link Connection IdentifierBearer Channel


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Capacity of NS-VCI

Given by CIR...Committed Information Rate

e.g. NS-VCI 16 --> CIR = 64 kBit/s

NS-VCI 17 --> CIR = 96 kBit/s

NS-VCI 18 --> CIR = 64 kBit/s

Could be discardedin case of congestion

1

2

3

4

0

TSL PCM-frame

BearerChannel

CIRmin = 16 kBit/s

Configurable in steps of 16 kBit/s

Range of CIR can exceed TLS borders

Sum of CIR capacity of bearer channel


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PCU2

PCU1

PCU3

BTS_3

BTS_6

RA 1

BTS_8

BTS_22

RA 2

LA

PCU3

BTS_22

RALA

BearerChannel_5

BearerChannel_6

BearerChannel_2

BearerChannel_1

BearerChannel_3

BearerChannel_4

Gb Interface ( over FR)

DLCI_16

DLCI_17

DLCI_16

DLCI_17

DLCI_16

DLCI_16

DLCI_17

DLCI_17

DLCI_18

DLCI_16

BVCI_3

BVCI_0NS-VCI_7

NS-VCI_2

NSEI_1

NS-VCI_5

NS-VCI_8

NS-VCI_3

BVCI_0

BVCI_6

NSEI_2

NS-VCI_4

NS-VCI_1

NS-VCI_11

BVCI_8

BVCI_0

NSEI_3

BVCI_22

BVCI_22

BVCI_0NS-VCI_6

NS-VCI_9

NSEI_7

BVCI_3

BVCI_0 NS-VCI_7

NS-VCI_2

NS-VCI_5

NS-VCI_8

NS-VCI_3

BVCI_0

BVCI_6

NSEI_1

NSEI_2

NS-VCI_4

NS-VCI_1

NS-VCI_11

BVCI_8

BVCI_0

NSEI_3

BVCI_22

BVCI_22

BVCI_0 NS-VCI_6

NS-VCI_9

NSEI_7

PAPU1

PAPU2

PAPU3

SGSN

BSSGP

NS

FR

Data

Signal

Data & Signal

BSS2

BSS1

E i R d t Gb IF


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Bearername=__________________________

BearerID=______ PCM= ____TSL________

Bearer Rate=_____

NSVCI=_____

DLCI=_____ CIR=_____

Bearername=__________________________

BearerID=______ PCM= ____TSL________

Bearer Rate=_____

NSVCI=_____

DLCI=_____ CIR=_____

Bearername=__________________________

BearerID=______ PCM= ____TSL________

Bearer Rate=_____

NSVCI=_____

DLCI=_____ CIR=_____

Bearername=__________________________

BearerID=______ PCM= ____TSL________

Bearer Rate=_____

NSVCI=_____

DLCI=_____ CIR=_____

PAPU

NS-VCI=___

NS-VCI=___

NS-VCI=___

NS-VC=___

SGSN

NS-VCI=___

Name_____

NSEI________

__

NS-VCI=___

Name_____

BSC

NS-VCI=___

Name_____

NS-VCI=___

Name_____

NSEI__________

NSEI__________

NSEI__________

BCSU=_____ PCU index=_____


Exercise: Read out Gb IF

configuration (FR)


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Gb over IP Considerations

Gb over IP license must be installed and activated

In dynamic IP configurations the SGSN side must be created first In static IP configurations it does not matter which end (BSC/SGSN) is created

first

Static configuration can use only logical IP addresses

Both IPv4 and IPv6 are supported in the Nokia implementation of Gb over IP

DNS names can be used instead of IP addresses if a DNS server address isspecified in the BSC


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Gb over IP interface configuration (BSC2i)

SGSNGb Interface

PAPU

BSC2i

BCSUPCU

ExternalLan

IP network


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Gb over IP interface configuration (BSC3i)

SGSNGb Interface

PAPUBSC3i

BCSUPCU

ESB20IP network


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General steps to create Gb over IP

Interrogate/Activate PCU/Gb over IP licenses

Interrogating/Creating hardware for Gb IP

Integrate the Gb over IP interface

Start

End


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LANSwitch

LANSwitch

LANSwitch

LANSwitch

IP Network

Point to PointEthernet

2

1

SGSN BSC

Transmission Solutions of Gb Interface (IP)


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Interrogate/Activate PCU/Gb IP licences

Install the licence

Set licence expiration warning time

Check that the installation succeeded

Activate features

Start

Transfer & store the new licence file to the licence directory

End

Has the

licenceexpired?

Are the PCUand Gb IP

features on?

Does thelicence exist inthe BSC?

Inactivate ramped-down features

Remove the expired licence

no

yes

no

yes

no

yes


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Change BCSU to SE-NH

Interrogating/Creating Hardware for Gb IP

Start

Create PCU card

Connect PCU card

Change BCSU state to WO-EX

End

Is PCU card in BCSUexisting?

Is PCU cardconnected?

Change BCSU to SE-NH

yes

yes

no

no


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Integrate the Gb over IP interface

End

Create network interface for your PCU

Create static routes

Check the IP configuration (optional)

Start

Create the NS-VC with a dynamic IP configuration Create the NS-VC with a static IP configuration

Check the creation and state of the NS-VC

or


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Static Gb IP configuration

Configuration parameters are

configured to both ends statically and

not transferred over Gb.

Operator creates all NS-VCs with fixed

remote IP endpoints: address, port

number, signaling weight and data

weight.

BSC software can decide that static

configuration is used, if PRE parameter

is set to No (N) in creation of first NS-

VC in NSE.

NS-VC configurations on both sides

(BSS and SGSN) must match


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Static Gb IP Configuration

PCU 4 (BCSU 2)NSEI:13731PSEI:100Logical IP address:10.2.77.82Port number:33301Remote IP address:10.2.10.15

Remote port number:50001

PAPU 5NSEI:13731PSEI=100Logical Ipaddress:10.2.10.15Portnumebr:50001Remote IP

address:10.2.77.82Remote portnumber:33301

NS-VC 7301

PRE:NRDW: 10RSW: 5

BSC08 SGSN01

RDW: 10RSW: 5


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Gb IP NS-VC static configuration (BSC)FXI:;

BSC3i BSC31-LAB 2007-01-18 11:01:11

NETWORK SERVICE VIRTUAL LINK PARAMETERS:

EQOS ENABLED

PSE-00

NSE-01755NS-VL-05500

COMMAND EXECUTED


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Gb IP NS-VC static configuration (BSC)FXI:BCSU=0,PCU=3:;

BSC3i BSC31-LAB 2007-01-18 11:02:17

NETWORK SERVICE VIRTUAL LINK PARAMETERS:

EQOS ENABLED

PSE-00 NSE-01755

================

LOCAL UDP PORT: 33000

NSE PFC MODE: ON

STATIC CONFIGURED NS-VL(S):

OP REMOTE REMOTEID NAME STATE RDW RSW IP ADDRESS UDP PORT

----- ---------- ----- --- --- --------------- --------05500 SGSN1 WO-EX 010 005 10.2.77.220 50000

ID REMOTE HOST NAME----- ----------------05500

COMMAND EXECUTED


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Dynamic Gb IP Configuration

Configuration parameters are

transferred over Gb in the initialization

phase.

Only one address and port pair of the

remote end SGSN is needed to

establish NS-VC configuration on Gb.

These parameters are attributes of the

preconfigured SGSN IP endpoint.

BSC software can decide that dynamic

configuration is used, if PRE

parameter is set to Yes (Y) when

creating the first NS-VC in NSE.


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Dynamic Gb IP Configuration

PCU 4 (BCSU 2)NSEI:13731PSEI:100IP address:10.2.77.82Port number:33301Remote IP address:

10.2.10.15Remote port number:50001

PAPU 5NSEI:13731PSEI:100IP address:10.2.10.15Port numebr:50001Remote IP address:

10.2.77.82Remote port number:33301

NS-VC 7301

PRE:Y

BSC08 SGSN01

RDW: 10RSW: 5

RDW:10RSW: 5

D i Gb IP fi ti


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Dynamic Gb IP configurationBSC BSC08 2005-04-07 15:10:51

NETWORK SERVICE VIRTUAL CONNECTION CREATION

NSEI-13731 BCSU-2 PCU-4

PRE CONFIGURED NS-VC:

NS-VC LOCAL REMOTE REMOTE

ID NAME UDP PORT IP ADDRESS UDP PORT

----- ---------- -------- --------------- --------

07301 GBOVERIP 50000 10.2.10.15 50001

REMOTE HOST NAME:/*** WARNING ***/

/*** BSC DB AND PCU CONFIGURED OK BUT NO

RESPONSE RECEIVED FROM SGSN, STILL TRYING ***/

COMMAND EXECUTED

Gb I t f P t l (IP)


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Gb Interface Protocol (IP)

SGSNBSC

LLC

SNDCP

Gb IP-IF

SubnetworkDependentConvergenceProtocolLogical Link Control

BSS GPRS protocollayer


StateofServices

GPRS

Signalling UDP

NetworkService control

part

L2

L1

UDPIP


L2

L1

BSSGP

Physicallayer

Layer 1 physical connection

User Datagram Protocol layer

Layer 2 data link layer

IP address routing

BSSGP

IP

Gb I t f Id tifi (IP)


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Gb Interface Identifier (IP)

BVCI

LPNBR

NSEI

NS-VCI

BSSGP

UDP

L2


BSC

BSSGP Virtual Connection Identifier

Network Service Entity

Network Service Virtual ConnectionIdentifier

Local User Datagram Protocol PortNumberRemote User Datagram Protocl PortNumber

IP

L1

RPNBR

RIP Remote IP address

RHOST Remote Host Name (If DNS exists)

PSEI Packet Network Service Entity


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Exercise: Read out Gb IF configuration (IP)


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Exercise: Read out Gb IF configuration (IP)

NSEI______

PSEI_____

UDP__________

PAPU______

NS-VCI_________

BCSU_____PCU____

IP_______________

RPN____________

LPN____________

RDW___________

RSW___________

PRE___________

RIP_____________

Gateway

IP_____

Gateway

IP_____

SGSN_____ BSC_____

NSEI______

PSEI______

UDP__________

IP_______________

RPN____________

LPN____________

RDW___________

RSW___________

PRE___________

RIP_____________

SGSN BSC

Exercise: Create Static Gb IP


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NS-VC __________

PRE:__RDW: __RSW: __

BSC___ SGSN__

RDW: __RSW: __

PCU___ (BCSU____)NSEI:___________PSEI:___________IP address:

_______________Port number:____Remote port number:

________________

PAPU ____NSEI:________PSEI:________IP address:

_________________Port numebr:______Remote port number:

_________________

PCU IP gw__________

PAPU IP gw__________



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NS-VC __________

PRE:__RDW: __RSW: __

BSC___ SGSN__

RDW: __RSW: __



________________

PAPU ____NSEI:___________PSEI:___________IP address:

_________________Port numebr:______Remote port number:

_________________

PCU IP gw__________


Exercise: Create Dynamic Gb IP


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Exercise: Create Dynamic Gb IP



________________

PAPU ____NSEI:___________PSEI:___________IP address:

_________________

Port numebr:______Remote port number:

_________________

NS-VC_________

PRE:_____

BSC___ SGSN__

RDW: ____RSW: ____

RDW: ____RSW: ____


PCU IP gw__________

Steps to activate GPRS on a cell level


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Steps to activate GPRS on a cell level

Check existent Routing Areas

Create Routing Area

Check Radio Network Parameter

End

Start

Enable GPRS on cell level

Routing Area


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37 2007 Nokia 13-495932 v1.0

RAI =

MCC+MNC+LAC+RAC

Rules:Routing Area LocationAreaRouting Area Cell

PCU 1

PCU 0BTS

BTS

RA 1

BTS

BTS

RA 2

SGSN

BTS

BTS

RA n

LA

BTS

BSC

PCU n

Location Area

RoutingArea

Cell

Routing Area

Territory Method in BSC


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TRX 1

TRX 2

BCCH TS TS TS TS TS TS TS

TS TS TS TS TS TS TSTS

CircuitSwitched

Territory

PacketSwitchedTerritory

Territory border moves based on CircuitSwitched and GPRS traffic load

Default

GPRSCapacityDedicatedGPRSCapacity

TS TS

Additional

GPRSCapacity

TS TS

Max

GPRSCapacity

Territory Method in BSC

GPRS Capable Traffic Channel


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GPRS Capable Traffic Channel

Within a cell, all the Full Rate and Dual Rate traffic channels are GPRS

capable.

GPRS territory is a set of consecutive TSLs, excluding

TSLs that are not capable of full rate traffic

non-TCH channels (BCCH, SDCCH)

permanent half rate TSLs blocked TSLs

TSL0 when BB Hopping is used

transparent HSCSD calls.

Exercise: Read out GPRS RNW


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configuration

BCSU=___

NS-VCI=___Name

_____

NSEI__________

PSEI__________

NS-VCI=___

Name_____

BSC

NS-VCI=___

Name_____

NS-VCI=___

Name_____

BCSU=___NSEI________

__

PSEI__________

RAC_____

BTS____

BTS____RAC_____

BTS____

BTS____

RAC_____

BTS____

BTS____

LAC______

BVCI=

_________

BVCI=

_________

RAC_____

BTS____

BTS____RAC_____

BTS____

BTS____

RAC_____

BTS____

BTS____

LAC______

RAC_____

BTS____

BTS____RAC_____

BTS____

BTS____

RAC_____

BTS____

BTS____

LAC______MCC= _____

MNC= _____BCSU=_____ PCU index=

_____


Exercise: Create GPRS in BSS (1/2)


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Exercise: Create GPRS in BSS (1/2)

Bearername=__SGSN1___________________

BearerID=_1 ____ PCM= _36_ TSL_8-14___

Bearer Rate=_448_

NSVCI=_502_

DLCI=_52__ CIR=_448_

Bearername=__________________________

BearerID=______ PCM= ____TSL________

Bearer Rate=_____

NSVCI=_____

DLCI=_____ CIR=_____

Bearername=__________________________

BearerID=______ PCM= ____TSL________

Bearer Rate=_____

NSVCI=_____ DLCI=_____ CIR=_____

Bearername=__SGSN0___________________

BearerID=_0____ PCM= _36_ TSL_1-7____

Bearer Rate=_448_

NSVCI=_501_

DLCI=_51__ CIR=_448_

PAPU

NS-VCI=___

NS-VCI=___

NS-VCI=___

NS-VC=___

SGSN

NS-VCI=501

NameVCSGSN0

NSEI_5001_____

PSEI_501_____

NS-VCI=___

Name_____

BSC

NS-VCI=___

Name_____

NS-

VCI=___Name_____

NSEI_5002____

PSEI _502___

NSEI__5001__

__PSEI __501___

NSEI__5002____

PSEI__502__

NS-VCI=502

NameVCSGSN1

NS-VCI=503NameVCSGSN2

NS-VCI=504

NameVCSGSN3

NS-VCI=504

NS-VCI=503

NS-VCI=502

NS-VCI=501

Bearername=__SGSN2___________________

BearerID=_2____ PCM= _37_ TSL_1-7____

Bearer Rate=_448_

NSVCI=_503_

DLCI=_53__ CIR=_448_

Bearername=__SGSN3___________________

BearerID=_3____ PCM= _37_ TSL_8-14____

Bearer Rate=_448_

NSVCI=_504_ DLCI=_54__ CIR=_448_



Steps to activate EGPRS on a cell level


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Steps to activate EGPRS on a cell level

Creating dynamic Abis pool

Creating a TRX which uses the dynamic Abis pool

End

Start

Enable EGRPS on the BTS

Unlock BTS

Dynamic Abis Allocation Introduction


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y

GSM/GPRS radio timeslot data

can be fitted into one 16 kbit/s

sub timeslot in Abis-if

EDGE introduces data

throughputs up to ca. 60 kbit/s

over air

up to 5*16 kbit/s sub

timeslots needed over

Abis/radio timeslot

BTS internal traffic can not be

fit into one D-bus (2 Mbit/s)

UltraSite has four D-buses

Abis capacity needs to beexpanded (even up to 4times higher)

Dynamic Abis Allocation

1*16 kbit/s "Master" as fixed/radiotimeslot

1 4*16 kbit/s "Slaves"dynamically as per needed/radiotimeslot

Background

Nokia Dynamic Abis solution


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PCU frame types

PCU data frame

used when TRX not in EDGE mode

only able to carry CS-1 and CS-2

PCU master data frame

used when TRX is attached to Dynamic Abis and Edge

or/CS3 CS4 is enabled in BTS

carries CS-1 or MCS-1 on its own and CS-2...CS-4 and

MCS-2...MCS-9 with the help of slave frame(s) includes pointers to the slave frames

PCU slave data frame

carries additional data that does not fit in PCU master

data frames

PCU random access frame

PCU synchronisation frame

MCS-1 M

M

M

M

M

M

M

M

M

S

S

S

CS-4

CS-3

CS-2

CS-1

MCS-2

MCS-3

MCS-4

MCS-5

MCS-6

MCS-7

MCS-8

MCS-9

S

S

S

S

S

S

S

S

S

MM

M

M

S

S

S

S

S

S

S

S

CS-2CS-1

D

D EDGE TRX in non-EDGE

mode or non-EDGE TRX

EDGE TRX inEDGE mode

D

M

S

PCU data frame

PCU master data frame

PCU slave data frame

+

+

+

+

+

+

+

+

+

+

+

retrans M

y

Nokia Dynamic Abis solution


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Fixed channels and EDAP

For each GPRS radio timeslot on each EDGE

TRX, one fixed 16-kbps channel is allocated onthe Abis for the transfer for PCU master data

frames.

PCU slave data frames are allocated in a

common pool, the EDAP (EDGE Dynamic Abis

Pool).

12 PCM timeslots as the maximum size of

EDAP.

A master channel and its slave channels and

therefore the entire EDAP must be on the

same Abis PCM.

Abis PCM

TRX 1

TRX 2

TRX 3

OMU, TRX sigs

EDAP

TRX 4

TRX 5

TRX 6

TRX 7

TRX 8

TRX 9

y

Support of PCCCH/PBCCH


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pp

More signalling capacity for (E)GPRS traffic

Own neigbour cell list for (E)GPRS

Own cell re-selection parameters for (E)GPRS:

C31/C32 cell selection criteria

They are used to direct the GPRS traffic on the cells, which can serveEGPRS most efficiently and interference free to CS traffic

C31/C32 apply in cells using PBCCH/PCCCH, otherwise existing C1/C2

are used

PBCCH/PCCCH

PBCCH PPCH PDTCH PRACH

BCCH/CCCH

Common Channels

PAGCH

PBCCH is in the same TRX asBCCH

PBCCH/PCCCH is hopping insidethe hopping group the timeslotbelongs to (Base Band Hopping)

Exercise: Activate EGPRS on a cell level


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B

Segment-1BTS-1

BCF of type Ultrasite or Metrosite

EGPRS territory

PB TRX1

TRX2

fixedCCITTframedata1 2 4 5 6 7 83

0123

456789

1011121314

15161718

20

22

26

29

31

19

21

232425

2728

30

T0011 BS001 T0021

TRX1

TRX2BTS 1

DAP

GPRS Coding Schemes


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NokiaGPRS

in BSSS11.5or above

NokiaGPRSin BSSS11

CS1 & CS2

Implemented in ALL Nokia BTS without HWchange

CS3 & CS4

Will not fit in normal 16kbit/s Abis TRAU frame

BSC S11.5 SW for PCU card ; S12 SW forPCU2 card, Dynamic Abis, and Edge HW

Data

Error

Correction

CodingScheme

CS1

CS2

CS3

CS4

Data Rateper TSL (kbit/s)

9.05

13.4

15.6

21.4

More Data

=

Less Error

Correction

Functional Description


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49 2007 Nokia 13-495932 v1.0

When CS3-CS4 option is on, and the Dynamic Abis pool and (E)GPRS territories

are created then all GPRS coding schemes (CS1-CS4) are available for data

transfer. The current GPRS Link Adaptation algorithm in the PCU/RLC is replaced with a

new one, which covers also CS3 and CS4.

A data block of CS2-CS4 is transferred in one PCU master Data Frame and one

PCU Slave Data Frame through the Abis interface. CS1 data block fits in one

PCU Master Data Frame.

Date post:	14-Apr-2018
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BSSITG_S12_GPRS and EGPRS Integration_in_BSC_v4.0.ppt

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