2G3G网络基本概念介绍

  • 格式:pptx
  • 大小:990.11 KB
  • 文档页数:8

下载文档原格式

  / 8
  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。

VLRnew
VLRold
HLR
1. Loc. Upd. request (TMSI-old + LAI-old)
5. Auth. Request
2. Analyse data (LAI-old)
3. Auth. Data + IMSI Request (TMSI)
4. Response (IMSI, auth data)
2. IMSI,MSISDN,IMEI分别标识什么?
Non-disclosure Confidential Document. Unauthorized Copy Prohibited. Copyright 2013. All rights reserved.
7
The Future Is Ours To Build
Non-disclosure Confidential Document. Unauthorized Copy Prohibited. Copyright 2013. All rights reserved.
位置更新示例(Inter-VLR Location Update)
RANnew
MSSnew
2、切换 (Handover)
-用户处于忙时由网络发起
Non-disclosure Confidential Document. Unauthorized Copy Prohibited. Copyright 2013. All rights reserved.
位置更新类型
– IMSI attach – Normal location update(Intra-VLR&Inter-VLR) – Periodic location update – Mobile switched on for the first time
8
Non-disclosure Confidential Document. Unauthorized Copy Prohibited. Copyright 2013. All rights reserved.
移动性管理
1、位置更新(Location Update)
-用户处于空闲状态时由用户发起 -是SIM/USIM、VLR、HLR更新的过程
Non-disclosure Confidential Document. Unauthorized Copy Prohibited. Copyright 2013. All rights reserved.
Non-disclosure Confidential Document. Unauthorized Copy Prohibited. Copyright 2013. All rights reserved.
Non-disclosure Confidential Document. Unauthorized Copy Prohibited. Copyright 2013. All rights reserved.
讨论问题
1. 如一个用户在呼叫过程中移动,导致了位置区的变化,这 时发生位置更新还是切换?还是都会发生?
2G/3G 网络基本概念简介
NNoonn-d-disiscclolossuurereCCoonnfifdideenntitaial lDDooccuummeennt.t.UUnnaauuththoorirzizeeddCCooppyyPProrohhibibitietedd. . CCooppyyrirgighhtt22001133. .AAllllrirgighhtstsreresseervrveedd. .
GCS
H.248 MGW
ISUP
PSTN/ISDN
GGSN
PDN
基本概念
1、网元(NE-Network Element) 2、核心网(Core Network)和接入网(RAN-Radio Access Network) 3、电路交换域(CS-Circuit Switch)和包交换域(PS-Packet Switch) 4、2G和3G 5、软交换
2G/3G 网络拓扑
SCP
CAP/INAP
HLR/AC
MAP
CAP/INAP
GSM
BTS
WCDMA Node-B
BSC
MAP
VMSS
SIP, BICC
MAP
RNC
A
Iu-CS
H.248 MGW
TDM/ IP/ATM
SGSN
Non-disclosure Confidential Document. Unauthorized Copy Prohibited. Copyright 2013. All rights reserved.
Biblioteka Baidu
6. Auth. Response
7. Location update (IMSI, new MSC/VLR addr.)
8a. Cancel location
10. Location update acknowledge
8b. Cancel location Ack. 9. Subscriber Data ( all BS, SS)