Call Admission Control for IP traffic
- Rejects RTP/UDP/IP connection establishment requests based on congestion detection in the IP network.
TFO/TrFO interworking
第6页
By Huangtao
R4核心网络－新增功能实体
MSC Server：完成呼叫控制、移动性管理、用户业务数据和 CAMEL相关数据的管理（VLR功能）等信令处理功能。 MGW：与MSC Server、GMSC Server配合完成核心网络资源 的配置（即承载信道的控制）。同时完成回声消除、（多媒体数 字）信号的编解码以及通知音的播放等功能。 SG：完成信令转换工作。即完成SS7的传送层MTP与SIGTRAN 的传送层SCTP/IP之间的转换，同时实现在SS7和IP 之间 MAP_E和MAP_G的信令互通。高层信令MAP、CAP不进行转 换。
IP网络
第4页
By Huangtao
PS域网络结构图
MSC/VLR GSM/GPRS BSC BSS BTS Abis Iu-CS RNC A
HLR/AuC/EIR PSTN ISDN
ss7
Gr
Gb
NodeB Iub
Billing Center Charging Gateway
Iu-ps
SGSN Firewall Ga
第7页
By Huangtao
课程内容
WCDMA的演进 软交换平台概述 MSC Server MGW
第8页
By Huangtao
目前的软件版本及主要功能
软交换R12:
TrFO SRNS relocation Access Restriction Data (ARD)- (CMCC only) TUP MGW Capacity : 13700 Erlangs(WCDMA only) APZ 212 50 MSC server in pool Multi-mode AMR MSC in Pool BICC on TDM Ethernet IP port on MGW R4
Nb
C -M G W M-M w
C -M G W M-M w
第15页
By Huangtao
课程内容
WCDMA的演进 软交换平台概述 MSC Server MGW R4
第16页
By Huangtao
MSC Server Capacity
CP HW families
4 3.5
Relative Capacity
RNC RNC
MSC MSC
RNC RNC 第10页
RNC RNC
RNC RNC
By Huangtao
RNC RNC
M-MGW R4 主要功能
Access: GSM, WCDMA, GSM/WCDMA User plane transport :
IP (Nb) ATM (Iu , Nb) TDM (A, CN) IP (Mc, Nb, CN) ATM (Iu, Mc, Nb, CN) TDM (A, CN)
Mc
MGW
Iu-CS Iur Iu-PS Iub
Node B RNC
MGW
Nb
ISUP/TDM
传统网络
分组域
（IP）
Iu-PS
SGSN
Gn
GGSN
Gi
Intranet / Internet
第3页
By Huangtao
3G R4 CS域协议组网
SMS-C SCP MAP CAP GMLC/SMLC HLR/EIR
0.5
APZ21230
1
APZ21233C APZ21240 APZ21250
第17页
By Huangtao
SLI/GARP Introduction
•• SCTP & IP SCTP & IP Implemented on SLI (SIGTRAN LINK INTERFACE), hosted on GARP Implemented on SLI (SIGTRAN LINK INTERFACE), hosted on GARP HW board. HW board. •• M3UA Redundancy Mechanism (HW redundant solution M3UA Redundancy Mechanism (HW redundant solution
IP B C P IP B C P
B IC C
TSC S e rv e r
SGW STP
IS U P
M TP3
M TP2
PHY
PHY
GCP
Mc
M 3U A
SCTP
IP
UTRAN
M 3U A
Mc
M 3U A
SC TP
IP
SC TP
IP
PSTN
BSS
BSSAP
SCCP
M TP3
M TP2
LL
LL
LL
PHY
CAP Over TDM/IP
HLR
MAP Over TDM/IP
TUP/ISUP
MSC
TDM
MSC
MSC Server
H.248
TUP/ISUP/BICC
MSC Server
H.248
CS-MGW
TDM/ATM/IP
CS-MGW
RAN
RAN
RAN
RAN
RAN
RAN
R99
R4
注：R99与R4的分组域无变化，图中未画出。
Pooled Network
RNC RNC
MSC MSC
MSC MSC
MSC MSC
RNC RNC
RNC RNC
RNC RNC
RNC RNC
Service Area 1
Service Area 2 Service Area 3 MSC MSC MSC MSC
Today’s Hierarchical Network
Element Management
- Call Path Tracing for IP (on ET-MFG board) - For Configuration Management a new simplified GUI “Object Explorer” is offered for more efficient configurations. The new GUI can be used to manage signaling (SS7) data
MAP
MAP
SS7网
SIGTRAN
GMSC server
BICC
MAP
VMSC Server
RANAP
PSTN / ISDN
TDM/G.711
UTRAN
BSSAP
AAL2
H.248
MGW
MGW
TDM/G.711
GSM / R99 PLMN
BSS
TDM
RTP(AAL2)/AMR
IP (ATM) BackBone
第12页
By Huangtao
M-MGW R4 主要功能
IP transport
- IP connection to the site router is available via Gigabit Ethernet interface (ET-MFG board) - VLAN tagging in order to support separation of the different traffic types into the different logical networks
第14页
By Huangtao
电路域核心网信令栈
S S 7 N e tw o rk H L R ,S G S N
B S S A P +
S IG T R A N
M AP
TC AP
B S S A P +
M AP
M AP
TC AP
B S S A P +
B S S A P
R A N A P
TC AP
SCCP
第20页
By Huangtao
软件结构
IP: responsible for the interaction with IPC in order to control the IP stack; commands are routed between IPC and IPR. IPC: Handles commands, printout and alarm for IP and Ethernet of the system SCTP: Inacts with Upper layer Protocol for routing of message from ULP to SCTPR with SCTPC for command and alarm handling SCTPC: handles commands, printout and alarm for the SCTP of the system
第13页
By Huangtao
M-MGW R4 主要功能
AMR2 on Nb
- Makes it possible to have : - TrFO for WCDMA calls - Transcoder at the edge for WCDMA calls - Compressed voice for GSM calls