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ZTE GPRS overview
Citation preview
GPRS principle overview in PS domainV1026
ZTE University
CN Team
TN_BT004_E1_1
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Course Objectives
Evolution of WCDMA CN
PS System Structure
Interface and Protocols Overview
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Evolution of WCDMA CN
GSM
GPRS Edge PS
CS
CDMA2000CDMA
2G 2.5G 2.75G 3G
3GPP
3GPP2
Organization
Evolution of WCDMA CN
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Standardization of WCDMA--3GPP
ETSI TC SMG
T1
ARIB
TTA
CWTS
TTC
1998 2001Q2
1999 2000Q2 Q1Q3 Q2 Q3Q4 Q4 Q1Q1 Q2 Q3 Q4Q4 Q3 Q1
3GPP Release 4
3GPP Release 5(ALL IP)
business2001 & 2002
3GPP Release 3(Release 1999)
Evolution of WCDMA CN
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The Evolution of CN
MSCGMSC
CS
GGSNSGSN
PS
RNSBSS RNS
BSS RNSBSS
MGWMGW
CS
GGSNSGSN
PS
MSC server
GMSC server
Billing Server
OMC
SCP
HLR
MMSC
GMLC
MGW
CS
GGSNSGSN
PS
MSC server
BillingServerSCP
HSSGMLC
MMSC OMC
MGCFCSCF
IMS
GMSC server
R99 R4 R5
CN based on GSM and GPRS MMS
Control and bearer are separated in CS
IP are introduced to CS and RNS
WCDMA migrates towards ALL IP
Billing Server
OMC
SCP
HLR
MMSC
GMLC
MGW
Evolution of WCDMA CN
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Iu-CS Iu-PSGbA
H
CS PS 3G CNGMSC
MSC
MSC
PSTN
HLR
GGSN
SGSN
GSM Access
WCDMAUTRAN
WCDMA R99 System Structure
Evolution of WCDMA CN
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Iu-CS Iu-PSGbA
H
CS PS UMTS CN
MSC
Server
GMGW
PSTN/ISDN
HLR
GGSN
SGSN
GSM Access
WCDMA UTRAN
MGW
GMSC
Server
2G NET R-SGW
T-SGW
WCDMA R4 System Structure
Evolution of WCDMA CN
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CS PS
MSC
Server
GMGWHSS
GGSN
SGSN
WCDMA UTRAN
MGW
GMSC
Server
IMS
IMS-MGW
SGW
MGCF
CSCF
PSTN
No.7
WCDMA R5 System Structure
Evolution of WCDMA CN
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Course Objectives
Evolution of WCDMA CN
PS System Structure
Interface and Protocols Overview
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What is GPRS
n GPRS is the abbreviation of General Packet Radio
Service
n GPRS provides end to end packet switch service for user
based on GSM
n GPRS make the best use of existing GSM network
n GPRS provides highly efficient use of radio resources
n GPRS provides as high as 171.2Kbps access rate
n GPRS based on standard open interface
PS System Structure
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What is PS
n PS is the packet switch network in WCDMA core network
n PS provides end-to-end packet switch service for users
n PS has almost the same elements and network structure with GPRS
n PS can provides access for GPRS radio access equipment and 2/3G hybrid network
n WCDMA technology introduced to improve radio resources utilization ratio
n WCDMA-PS provides as high as 2Mbps access rate
n WCDMA-PS system based on standard interface
PS System Structure
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RNC
Node BTDM/A
TM PSTN
IP
Iu-PS
Gn Gn
Gp
Gi
CG
Billing Center
Ga
HLR
MSC
GGSN
GMSC
4 Serving GPRS Support Node
4 Gateway GPRS Support Node
Inter-PLMN
4 Charging Gateway
BSCBTS
SGSN
GbInternet
PS Network
PS System Structure
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SGSN Function
CDR 4 CDR Collect4 Saving, Format, Relay
MM 4 Attach Detach, Location Management4 Service Request
Data Manage
4 Save, Modify, Delete Subscriber Data 4 Insert Subscriber Data/Cancel Location
Route Manage 4 PDP PDU Transfer
RR Manage
4 GPRS Paging, Combined Gs Paging4 RNC Radio Resource Management
PS System Structure
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GGSN Function
n Routing Select, PDP PDU Transfer, Address Mapping
n Tunnel Capsulate and Transfer
n Subscriber Data Management
n Session Management
n IP Address Management
n Charging Information Select
PS System Structure
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DNS Function
n When activating PDP, APN is used to get the IP address of GGSN
n Get old SGSN IP address during the process of inter-SGSN routing area update
SGSN GGSN(A)
MS
BSS
GPRS Core NetworkGPRS Core NetworkGPRS Core NetworkGPRS Core NetworkISP AISP AISP AISP A
ISP BISP BISP BISP B
Internet/IntranetGGSN(B)
DNS
When activating PDP, SGSN translate APN to GTP-C IP address of GGSN
PS System Structure
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BC
GPRS Bore
TCP/IP
SGSN/GGSN SGSN/GGSN
CG
TCP/UDPGTP'
FTAM/FTPFTAM/FTP
CG OMM Server CG OMM Client CG OMM Client
CG Function
PS System Structure
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CG Function
n CG implements the following functions:
ÑCDRs generated by GSNs collected in real time;
ÑBuffering the CDRs
ÑPreprocessing the CDRs, such as CDR
consolidation and filtering, deleting certain CDR
fields, and modifying or adding some CDR fields.
ÑTransferring the CDRs to the BC.
PS System Structure
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SGSN GGSN
Backbone Network
S-SMT-CDRS-CDR M-CDRS-SMO-CDR G-CDR
CG CDRs
PS System Structure
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BG Function
n BG implement these functions
Ñ Security: IPSec and firewall
Ñ Routing protocol: BGP
Ñ Billing protocol: negotiated by operators, collect billing
information
n Usually based on router
n Can be the same equipment as GGSN
PS System Structure
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HLR/AUC Function
n Store and update GPRS user profile
n User authentication
n Processing the location/routing information related to
mobility management and route selection, such as
Ñ Store and update user’s serving SGSN number and
address
ÑMS reachable or not flag
PS System Structure
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MSC/VLR Function
n When Gs interface is installed, MSC/VLR can support:
Ñ SGSN and MSC/VLR relationship establishment and
maintenance
ÑGPRS joint mobility management
Joint IMSI/GPRS attach/detach
Joint location area/routing area updating
Circuit paging coordination function
Improve the radio resource utilization ratio
PS System Structure
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Course Objectives
Evolution of WCDMA CN
PS System Structure
Interface and Protocols Overview
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L1L1
PMM/SMPMM/SM/SMS/SMS
RRCRRC
MSMS UTRANUTRAN 33GG--SGSNSGSN 33GG--GGSNGGSN
L2L2
L1L1
TCP/UDPTCP/UDP
IPIPMACMAC
RLCRLC
RANAPRANAP GTPGTP--CC
AAL5AAL5
ATMATM
SignallingSignallingBearerBearer
SCCPSCCP
L2L2
L1L1
TCP/UDPTCP/UDP
IPIP
GTPGTP--CCRRCRRC RANAPRANAP
L1L1
MACMAC
RLCRLC
AAL5AAL5
ATMATM
SCCPSCCP
SignallingSignallingBearerBearer
PMM/SMPMM/SM/SMS/SMS
GTP transfer
3G PS Control Plane Strcture
Interface and Protocols
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UuUu
MSMS UTRANUTRAN 33GG--SGSNSGSN 33GG--GGSNGGSN
Eg:Ip,PPPEg:Ip,PPPEg:IP,PPPEg:IP,PPP
L2L2
L1L1
GTPGTP——UU
IP/UDPIP/UDP
AAL5AAL5
ATMATM
IP/UDPIP/UDP
GTPGTP--UU
L2L2
L1L1
GTPGTP——UU
IP/UDPIP/UDP
AAL5AAL5
ATMATM
IP/UDPIP/UDP
GTPGTP--UU
MACMAC
L1L1
RLCRLC
PDCPPDCP
MACMAC
L1L1
RLCRLC
PDCPPDCP
IuIu--PSPS GnGn
GTP transfer
3G PS User Plane Structure
Interface and Protocols
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ATM/IP Backbone
Services
Internet/Intranet
GMSC Server
MSC Server
McMc McMc
Nc
API
GGSNSGSN
MGW
SCPSCP
RNS
PSTN/GSMMGW
HLRHLR
CG
SG
Nb
GnGi
Ga Ga
SAALATM
MTP3bSCCP
RANAP
GMM/SM
Control Plane
SAALATM
IuUP
User Plane
IP/UDPGTP-U
Protocols on Interface
Interface and Protocols
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ATM/IP Backbone
Services
Internet/Intranet
GMSC Server
MSC Server
McMc McMc
Nc
API
GGSNSGSN
MGW
SCPSCP
RNS
PSTN/GSMMGW
HLRHLR
CG
SG
Nb
GnGi
Ga Ga
L2L1
IP/UDP
GTP-C
Control Plane
L2L1
GTP-U
User Plane
IP/UDP
Protocols on Interface
Interface and Protocols
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ATM/IP Backbone
Services
Internet/Intranet
GMSC Server
MSC Server
McMc McMc
Nc
API
GGSNSGSN
MGW
SCPSCP
RNS
PSTN/GSMMGW
HLRHLR
CG
SG
Nb
GnGi
Ga Ga
L2L1
IP/UDP
GTP’
Protocols on Interface
Interface and Protocols
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ATM/IP Backbone
Services
Internet/Intranet
GMSC Server
MSC Server
McMc McMc
Nc
API
GGSNSGSN
MGW
SCPSCP
RNS
PSTN/GSMMGW
HLRHLR
CG
SG
Nb
GnGi
Ga Ga
L2L1
IP/UDP
Application
Protocols on Interface
Interface and Protocols
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