lte基本流程(ppt37頁)-文庫吧
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【正文】 移動(dòng)性管理 S1釋放過程 跟蹤區(qū)更新過程 服務(wù)請(qǐng)求過程 去附著過程 附著過程 12 移動(dòng)性管理 ? MME的狀態(tài)遷移 E M M D E R E G IS T E R E D E M M R E G IS T E R E D A tta c h a c c e p t T A U a c c e p t fo r a U E s e le c tin g E U T R A N fro m G E R A N /U T R A N D e ta c h , A tta c h R e je c t, T A U re je c t, A ll b e a re rs d e a c tiv a te d EC M IDL E EC M CO NN EC T ED S1 c o n n e c ti o n e s ta b l i s h e d S1 c o n n e c ti o n re l e a s e d 13 Attach流程 3. Identification Request 2. Attach Request 3. Identification Response 2. Attach Request 4. Identity Request 4. Identity Response 5. Authentication and Security 7. Update Location 8. Cancel Location 10. Update Location Ack 8. Cancel Location Ack 9. Delete Bearer Request 9. Delete Bearer Response 6. Delete Bearer Response 6. Delete Bearer Request GTPU tunnel GTP signaling NAS signaling S1AP signaling RRC signaling Diameter signaling 1. RRC Connection est. 5b. Identity Request/Response 5b. ME Identity check EIR new MME old MME SGW PCRF HSS PDN GW eNodeB UE 14 Attach流程 new MME old MME SGW PCRF HSS PDN GW eNodeB UE 16. Create Bearer Response 12. Create Bearer Request 17. Attach Accept First Uplink Data 13. Create Bearer Request 15. Create Bearer Response 14. PCRF Interaction 19. RRC Connection Configuration Complete 18. RRC Connection Configuration 20. Attach Complete 22. Modify Bearer Response 21. Modify Bearer Request First Downlink Data First Downlink Data may arrive 23. Update Location Request 24. Update Location Response 15 ? Attach過程 S1口錯(cuò)誤舉例 Network Failure 默認(rèn) APN的 QCI設(shè)置成了 1 HSS中配置了默認(rèn) apn是 *。而 MME沒有配置用默認(rèn) apn或者 override APN替換。 apn配置錯(cuò)誤： cmcc4g IN NAPTR 10 10 “S” “x3pggpgw:xs5gtp:xs8gtp” EPS services and nonEPS services not allowed HSS中未簽約 4G數(shù)據(jù)， AIR中返回 DIAMETER_ERROR_USER_UNKNOWN No Suitable Cells In Tracking area HSS鑒權(quán)數(shù)據(jù)配置錯(cuò)誤引起 hss返回 DIAMETER_AUTHORIZATION_REJECTED HSS的 AIR返回返回 DIAMETER_REALM_NOT_SERVED Attach流程 16 移動(dòng)性管理 ?鑒權(quán)過程 MME HSS {{IMSI,Ki}} UE IMSI, Ki IMSI / TMSI RAND(i), AUTN(i), XRES(i), KASME RAND(i), AUTN(i) IMSI SRES(i) encrypted TMSI SRES=XRES ? If yes HSS eNB 17 移動(dòng)性管理 ?加密過程 UE eNB HSS/AUC UP Security Association Security Association NAS Security Association Subscriber Authentication/Authorization (AKA) NAS Keys AS Keys UP Keys CK, IK CK, IK Root Key USIM Root Key NAS Keys AS Keys UP Keys MME K_ASME 18 移動(dòng)性管理 ?去附著過程 U E e N B M M E1 D e t a c h R e q u e s t （ N A S 消 息 ）2 D e t a c h A c c e p t （ N A S 消 息 ）3 R R C 連 接 釋 放 過 程U E e N B M M E1 D e t a c h R e q u e s t （ N A S 消
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