VoLTE信令分析手册（无线侧常用）

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VoLTE信令分析手册

部门 TDD网络基础性能部 作者 张艳丽 00257121 日期 2015-4

目录

VoLTE信令分析手册 .................................................................................................................................. 1 1 2

前言......................................................................................................................................................... 2 初始注册 ................................................................................................................................................ 3 2.1

Initial attach ................................................................................................................................. 4 2.1.1 Attach Request（piggybacked PDN connectivity request） ............................................. 4 2.1.2 Attach Accept(piggybacked Activate default EPS bearer context request)......................... 5 2.2

IMS PDN Connection建立 ........................................................................................................ 6 2.2.1 PDN connectivity request ................................................................................................... 6 2.2.2 E-RAB SETUP REQUEST ................................................................................................. 8 2.2.3 Activate default EPS bearer context request ...................................................................... 8 2.3

IMS域SIP注册 ........................................................................................................................ 9 2.3.1 SIP Register ..................................................................................................................... 10 2.3.2 401 Unauthorized