2024年4月1日发(作者：九晶灵)

SA网络接入问题优化探究与实践总结

XX

目录

一、SA 网络架构 .............................................................................................................................. 4

二、SA 接入流程与问题分类 .......................................................................................................... 4

2.1 SA 接入流程 .............................................................................................................. 4

2.2 SA 接入问题分类 ...................................................................................................... 8

三、SA 接入优化案例 .................................................................................................................... 13

3.1 License 受限导致无法正常接入 .......................................................................... 13

3.2 request rejected unspecified .................................... 15

3.3 license 未配导致语音回落 LTE 失败 .................................................................. 18

3.4 核心网数据导致 SA 站点无法正常语音 EPS FB ........................ 19

3.5 EPSFB 呼叫失败 ...................................................................................................... 21

3.6 SA 组网 EPS FB 跟 Xn 切换流程冲突导致语音呼叫失败 .................................... 23

四、经验总结 ................................................................................................................................. 25

2024年4月1日发(作者：九晶灵)

SA网络接入问题优化探究与实践总结

XX

目录

一、SA 网络架构 .............................................................................................................................. 4

二、SA 接入流程与问题分类 .......................................................................................................... 4

2.1 SA 接入流程 .............................................................................................................. 4

2.2 SA 接入问题分类 ...................................................................................................... 8

三、SA 接入优化案例 .................................................................................................................... 13

3.1 License 受限导致无法正常接入 .......................................................................... 13

3.2 request rejected unspecified .................................... 15

3.3 license 未配导致语音回落 LTE 失败 .................................................................. 18

3.4 核心网数据导致 SA 站点无法正常语音 EPS FB ........................ 19

3.5 EPSFB 呼叫失败 ...................................................................................................... 21

3.6 SA 组网 EPS FB 跟 Xn 切换流程冲突导致语音呼叫失败 .................................... 23

四、经验总结 ................................................................................................................................. 25