Upload
everlast2002
View
97
Download
13
Embed Size (px)
Citation preview
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
System Structure of ZXC10 MGW/MSCe/HLRe
V0702
ZTE UniversityMobile-MSS/WDSS Group
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Understand System Structure of ZXC10 MGW
Understand System Structure of ZXC10 MSCe
Understand System Structure of ZXC10 HLRe
Course Objectives
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Agenda
Architecture of ZXC10 MGWArchitecture of ZXC10 MSCeArchitecture of ZXC10 HLRe
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Control Plane Processing Unit
ZXC10-MGW
IP Access Unit
DT Unit PSTN/PLMN
No.7 Network
IP Network
Function Structure of ZXC10 MGW
Circuit Switching Unit
IP Switching Unit
Media ResourceUnit
TranscodingUnit
SS7 SignalingUnit
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Logical Units of ZXC10 MGW
• The MGW can be functionally divided into:– IP Access Unit– IP Switching Unit– Digital Trunk Unit– Circuit Switching Unit– Transcoding Unit– Control Plane Processing Unit– Clock Unit
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
IP Access Unit
• This IP Access Unit provides interfaces such as FE, GE, implements RTP/UDP/IP processing.
UIM
MPB
OMP
BPSN
BCTC
BCTC/OMC
Small
Capacity
Large
Capacity
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
IP Switching Unit
• Here the IP switching refers to the media plane IP switching. It exists in the resource subsystem and the core packet switching subsystem.
Media plane IP switching in the core packet switching subsystem
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Digital Trunk Unit (TDM Access)
• The digital trunk unit implements the voice access from the PSTN/PLMN or 2G BSC.
Othercontrol bus
To controlstream
Ethernet
TDM bus
Controlstream
Ethernet
TDM bus
SDTB DTB/DTEC
Other controlbus
MPB
Small
Capacity
UIMU
OMP
Large
Capacity
BCTC
BCSN
BCTC/OMC
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Circuit Switching Unit
• The circuit switching unit implements the T net switching with capacity of 64k~256k.
• The circuit switching unit consists of TSNB (with a maximum switching capacity of 256k) and TFI.
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Transcoding Unit
• The transcoding unit implements transcoder and media resources functions(Conference call, Tone/Voice, DTMF, MFC, and so on)
UIM
UIM
MPB
OMP
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
• Though MS1 and MS2 adopt EVRCs of the same type, two transcoders are still used on the bearer path to convert EVRC into G.711 and then to convert G.711 to EVRC for the interworking of the media streams between the two MSs. This is the traditional tandem operation. TrFO tries best to avoid it.
Typical tandem operation
BSCBSC BSCBSCTranscoder Transcoder
Core Network
EVRC voice EVRC voiceG.711 voice G.711 voice
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
• TrFO: Transcoder Free Operation– TrFO means that compressed voice is transferred
between traditional MSs through the bearing channel of a packet-based network without a codec 。
• RTO: Remote Transcoder Operation– For the RTO, a transcoder is configured at the remote
call side. RTO involves MS-MS RTO and MS-PSTN RTO.
TrFO/RTO
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
• When the codec formats of the two MS are compatible, no transcoder is required during the voice transmission, Compared with the Tandem structure, TrFO operation can save transcoder resource and IP network resource.
TrFO: Mobile to Mobile
In 3GCN, Transcoder Integrated in MGW
Transcoder TranscoderEVRC
EVRC
EVRC
MS1 MS2
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
• When the codec formats of the two MSs are not compatible, only one transcoder is required, Compared with the Tandem structure, RTO only requires one-stage transcoding, improving the call quality.
RTO: Mobile to Mobile
In 3GCN, Transcoder Integrated in MGW
Transcoder TranscoderEVRC
EVRC
EVRC
13K
13K 13K
MS1 MS2
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
• Only one transcoder need be set on the bearer channel between the MS and PSTN subscribers converting compressed voice into PCM and vice versa.
RTO: MS-to-PSTN / PSTN-to-MS
Transcoder TranscoderEVRC
EVRC
EVRC
PCM
PCM PCM
MS1 PSTN
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
TrFO & RTO
EVRC VoiceEVRC Voice
EVRC Voice
BSC
MSCeMSCeMSCe
IP Network
BSC
MSCeMSCeMSCe
SIP-TSIPSIP--TT
BTS
PSTN
TrFO
RTO
G.711 VoiceMGW MGW
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Control Plane Processing Unit
• The MPB implements these functions: converging and processing the control plane media streams, call control, signaling processing, and operation & maintenance.
• The SPB connects to the SS7 network for processing SS7 MTP-2. • The MNIC connects to the IP network for processing the protocols in the IP
domain.
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Clock Unit
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Signaling Processing in ZXC10 MGW
ISUP/TUP
MTP3
MTP2
MTP1
TDM
ISUP/TUP
MTP3
MTP2
TDM
ISUP/TUP
MTP3
IP
ISUP/TUP
MTP3
IP
ISUP/TUP
IPISUP/TUP
Sigtran
ISUP/TUP
IP
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Media Stream in ZXC10 MGW
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Agenda
Architecture of ZXC10 MGWArchitecture of ZXC10 MSCeArchitecture of ZXC10 HLRe
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
ZXC10 MSCe Main Functions
Support multiple interfaces including E1/T1/SDH/Ethernet etc.
Support multiple protocols including Megaco/H.248, SIP-T,
Sigtran, SS7, etc.
Act as VMSCe, GMSCe or TMSCe
Embedded SGW/SSP functions
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Function Structure of ZXC10 MSCe
IP switching unit
SS7 signaling unit
IP protocol unit
MSCe
IP network
SS7 network
ISUP/TUP
MTP3
MTP2
MTP1
TDM
ISUP/TUP
MTP3
IP
ISUP/TUP/H.248
Sigtran
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Logical Units of ZXC10 MSCe
• The MSCe can be functionally divided into:– Access Unit– Switching Unit– Processing Unit– Clock Unit
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Access Unit
• Access Unit provides 2 kinds of external interfaces: – IP interface: 100M access (MNIC )– SS7 interface: E1 access (SPB)
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Switching Unit
• Switching Unit includes 2 kinds of boards: – UIM: UIMC.
– CHUB: Implements Ethernet interconnection between each signaling control subsystem and the main control subsystem.
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Clock Unit
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Agenda
Architecture of ZXC10 MGWArchitecture of ZXC10 MSCeArchitecture of ZXC10 HLRe
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
ZXC10 HLRe Main Functions
Mobility management function
Basic call function
Data service function
SMS service function
Supplementary service function
WIN service function
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Overall System Architecture of ZXC10 HLRe
latigid
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Common Processor Module (CPM)
• The Common Processor Module (CPM) serves as the core module of the interface between the HLRe and other functional entities and the service processor. It has the following functions:
– Processes No.7 signaling and IP signaling.– Provide Memory Database.– Processes the HLRe MAP service.– Provide O&M module to process the operation
and maintenance instructions sent from the background and return the processing results to the background.
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Common Processor Module (CPM)
1716151413121110987654321
BCTC
SMP
SMP
CLKG
CLKG
OMP
OMP
UIMC
UIMC
SMP
SMP
USI
USI
SIPI
SIPI
SPB
SPB
• Just like MSCe, HLRe CPM consists of one or multiple control subsystems (BCTC).
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
SPB
MNIC CLKSMP
SPBOMP
FE
FEFE
FE
OMCServer
BCTC
E1/ T1
FE
Interconnection of subsystems
Interfaces of CPM
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
HLRe Database Server Structure
• Each HDM consists of 2 servers and 1 disk array. It adopts the Cluster technology to enhance system reliability and saves data in the form of RAID1+0.
Server 1Server 1
Server 2Server 2
Disk arrayDisk array
SCSI Adapter SCSI Adapter
Ethernet Card 1
Ethernet Card 2
Ethernet Card 3
To HUB1
To HUB 2To HUB 2
To HUB1
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
HLRe Subscriber Database
• There are 2 subscriber databases in HLRe:
– Physical DatabaseLocation: HLRe Database Server
– Memory Database Location: Memory of SMP board
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
HDBAgent
• Function: – Realize the synchronization between Physical
Database in database server and Memory Database in SMP boards.
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Application Server (DBIO)
• The DBIO program is run on the application server to provide the database access interface for the service console.
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Service Console (Agent)
• The service console offers man-machine operations, through which carriers can manage subscribers data in physical database.
• A router can be used to implement the remote service handling.
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
HLRe Working Principle
Database Server
OMM server Application server
Maintenance console 1…n
Agent 1
Agent 2
HDBagent
Agent 3…n
DBIO
process
Physical
Database
CPM
SMP
Memory Daabase
Config.DB
ZTE UniversityZTE UniversityZTE University univ.zte.com.cnuniv.zte.com.cnuniv.zte.com.cnThe information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited.
Thanks !Thanks Thanks !!Questions are welcome Questions are welcome