Post on 14-Apr-2018
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1 2007 Nokia 13-495932 v1.0
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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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
Network Servicecontrol part
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
Network Servicecontrol part
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=_____
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
Network Servicecontrol part
StateofServices
GPRS
Signalling UDP
NetworkService control
part
L2
L1
UDPIP
Network Servicecontrol part
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
Network Servicecontrol part
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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Exercise: Create Static Gb IP
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__________
Exercise: Create Static Gb IP
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Exercise: Create Static Gb IP
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__________
Exercise: Create Dynamic Gb IP
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Exercise: Create Dynamic Gb IP
PCU___ (BCSU____)NSEI:___________PSEI:___________IP address:
_______________Port number:____Remote port number:
________________
PAPU ____NSEI:___________PSEI:___________IP address:
_________________
Port numebr:______Remote port number:
_________________
NS-VC_________
PRE:_____
BSC___ SGSN__
RDW: ____RSW: ____
RDW: ____RSW: ____
PAPU IP gw__________
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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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=
_____
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_
BCSU=_____ PCU index=_____
BCSU=_____ PCU index=_____
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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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.