EPC 移动性管理附着流程故障处理

EPC 移动性管理附着流 程故障处理(MME)

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参考资料3GPP 23401 3GPP 24301(MM/SM) 3GPP 29272(S6a)

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培训目标学完本课程后，您应该能： 掌握附着流程在MME内的深入处理机制

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掌握信令类故障处理的方法和思路 掌握附着流程的高级故障处理

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目

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1. 附着流程故障处理背景知识 2. 附着流程故障分析处理

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目

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1. 附着流程故障处理背景知识 2. 附着流程故障分析处理

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目

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1. 附着流程故障处理背景知识1.1 附着流程介绍 1.2 MME内部处理机制 1.3 附着流程故障处理思路

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Attach with IMSI in 4GUE eNodeB MME SGW PGW HSS

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Attach Request (with IMSI) Access Control by MME license/ data configuration Authentication Information Request Authentication Information Response Authentication Request Authentication Response

接入控制 安全流程

Update Location RequestUpdate Location Answer Access Control by Subscribe data Create Session Request Create Session Response Initial Context Setup Request(Attach Accept ) Create Session Request Create Session Response

位置更新

RRC Connection Reconfiguration( Attach accept)RRC Connection Reconfiguration Complete Initial Context Setup Response Direct transfer (Attach Complete ) Modify Bearer Request Modify Bearer Response

缺省承载创建

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目

录

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1. 附着流程故障处理背景知识1.1 附着流程介绍 1.2 MME内部处理机制 1.3 附着流程故障处理思路

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接入控制内部处理过程Attach requestHPLMN? Default cause: EPS services not allowed in this PLMN 可以通过SET EMMPROCTRL自定义N N Y

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Connect PLMN?Y Y

No response from MME

License/Resourc e LimitN

Default cause: EPS services not allowed Controlled by command ADD S1ACCAREALST

Y

Access control by IMSIN

Regional Roaming Restriction: ADD S1ACCAREALST

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鉴权流程内部处理过程

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Access control by IMSIN

Protocol error, unspecified. 可以通过SET EMMPROCTRL自定义

N

IMSIHSS/DMPE?Y

Network failure (#17)可以通过SET EMMPROCTRL自定义Network failure (#17) 可以通过SET EMMPROCTRL自定义 EPS services and nonEPS services not allowed(#8)(可配置) No suitable cells in tracking area(#15)(可配置) Illegal UE(#3) Illegal UE(#3) Illegal UE(#3) DIAMETER_ERRO R_USER_UNKNO WN DIAMETER ERROR UNKNOWN EPS SUBSCRIPTION Authentication failure Authentication failure Authentication failure No response form HLR Unkn

own subs in HLR EPS Subs Unknown

N

Authentication set requestY

Authentication set response

No response from UE Wrong K/OP Illegal UE

Authentication request/ response

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位置更新内部处理过程EPS services and non-EPS services not allowed(#8) (可配置) No suitable cells in tracking area(#15)(可配置) No suitable cells in tracking area(#15)(可配置) PLMN not allowed (#11)(可 配置) DIAMETER_ERROR_USER_ UNKNOWN DIAMETER ERROR UNKNOWN EPS SUBSCRIPTION DIAMETER_ERROR_RAT_N OT_ALLOWED DIAMETER_ERROR_R OAMING_NOT_ALLO WED Unknown subs

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Authentication request/ response

EPS Subs Unknown

RAT not allowed

Update location

Roaming not allowed

No suitable cells in tracking area (#15) Or Roaming not allowed in this tracking area(#13) EPS services not allowed (#7) (可通过ADD S1ARD配置) EPS services not allowed (#7) (可通过ADD S1ARD配置)

Zone code restrict

ARD restrict Restrict according to APNNI

Access control by subscribed data

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缺省承载建立内部处理过程

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Access control by subscribed data终端无应答 ESM failur(#19) DefaultBearer Creating Failed ACTIVATE DEFAULT EPS BEARER CONTEXT ACCEPT/ Attach Complete

Default Bearer CreationESM failur(#19)DefaultBearer Creating Failed 其他因素导致的承载激 活失败

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原因值(PLMN配置/S6a接口故 障)SET EMMPROCTRL 在用户接入S1模式时，USN9810可通过该 命令控制MM流程进行特殊处理以及特殊 场景下指定的原因值下发，以满足运营 商实现对现网设备兼容性特殊控制的需 求。

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Cause Value(Regional Roaming Restriction)ADD S1ACCAREALST

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区域漫游限制用户：可以限制特定的用户在特定的跟踪区内的 接接入策略及拒绝原因值的配置。

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Cause Value(Access control by subscribed data)ADD S1ARD 可以配置是否拒绝终端的原因值

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接入控制原因值故障原因值No suitable cells in tracking area (#15)Roaming not allowed in this tracking area(#13) EPS services not allowed (#7) (可通过 ADD S1ARD配置) ARD限制

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限制类别ZC限制

解决办法1.检查HSS签约数据2.检查ZC配置数据

1.检查HSS签约数据 2.检查ADD S1ARD

EPS services not allowed (#7) (可通过ADD S1ARD配置)

APNNI限制

1.检查HSS签约数据2.检查ADD S1ARD

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目

录

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1. 附着流程故障处理背景知识1.1 附着流程介绍 1.2 MME内部处理机制 1.3 附着流程故障处理思路

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附着流程故障分析思路附着流程的故障分析思路如下： 1、确定网元范围； 2、确定故障影响范围，初步

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