LTE系统信令流程全集

全部LTE信令流程图

LTE系统信令流程全集

全部LTE信令流程图

UE 开机附着信令流程

全部LTE信令流程图

UE Attach 信令流程

全部LTE信令流程图

UE Attach 信令流程 (续)

全部LTE信令流程图

Spec 23.401 5.3.2 Attach Procedure

全部LTE信令流程图

Spec 23.401 5.3.2 Attach Procedure (cont.)

全部LTE信令流程图

23.401 5.3.3.1 S-GW改变的TAU信令流程(Tracking Area Update跟踪区更新)UE eNodeB RNC new MME 1. Trigger to start TAU procedure 2. TAU Request 3. TAU Request 4. Context Request 5. Context Response 6. Authentication / Security 7. Co ntext Acknowledge 8. Create Session Request 9. Modify Bearer Request9a. PCEF Initiated IP-CAN Session Modification

old MME/ new Serving old Serving PDN GW GW GW old S4 SGSN

HSS PCRF

10. Modify Bearer Response (A) 11. Create Session Response 12. Update Location 13. Cancel Location 15. Iu Release Command 16. Iu Release Complete 17. Update Location Ack 18. Delete Session Request 20. TAU Accept 21. TAU Complete (B) 19. Delete Session Response 14. Cancel Location Ack

UE移入LTE接入网通过TAU让核心网更新资源

全部LTE信令流程图

23.401 5.3.3.2 S-GW不变的TAU信令流程(Tracking Area Update跟踪区更新)UE eNodeB RNC BSC MME Old MME / Old S4 SGSN Serving GW PDN PDN GW PCRF HSS

1. Trigger to start TAU procedure 2. Tracking Area Update Request 3. Tracking Area Update Request 4. Context Request 5. Context Response 6. Authentication / Security 7. Context Acknowledge

9. Modify Bearer Request 10. Modify Bearer Request11. PCEF Initiated IP-CAN Session Modification

12. Modify Bearer Response 13. Modify Bearer Response 14. Update Location Request 15. Cancel Location 16. Cancel Location Ack 17. Iu Release Command 18. Iu Release Complete 19. Update Location Ack

(A)

20. Tracking Area Update Accept 21. Tracking Area Update Complete

UE移入LTE接入网通过TAU让核心网更新资源

全部LTE信令流程图

UE

eNodeB

RNC/ BSS

SGSN

MME

Serving GW

Old SGSN

PDN GW

PCRF

HSS

1. UE Changes to UTRAN or GERAN 2a. Routeing Area Update Request 2b. Routeing Area Update Request

23.401 5.3.3.3 通过MME交互 且S-GW不变的 路由区更新(RAU) UE离开LTE接入网 已经在2G/3G网 通过RAU让核心网 修改资源

3. Context Request

4. Context Response 5. Authentication 6. Context Acknowledge

7. Modify Bearer Request 8. Modify Bearer Request9. PCEF Initiated IP-CAN Session Modification

10. Modify Bearer Response 11. Modify Bearer Response 12. Update Location

(A)

13. Cancel Location 13. Cancel Location Ack 14. S1-AP: S1 Release CommandRelease E-UTRAN connection

14. S1-AP: S1 Release Complete

15. Update Location Ack 18. Routeing Area Update Accept 19. Routeing Area Update Complete 20. Service Request 21. RAB Assignment Request 21b. RAB Assignment Response 22. Modify Bearer Request 22b. Modify Bearer Response

全部LTE信令流程图

UE

RNC/ BSS

eNodeB

SGSN

MME

New Serving GW

Old Serving GW

PDN GW

Old SGSN

PCRF

HSS

1. UE Changes to UTRAN or GERAN 2a. Routeing Area Update Request 2b. Routeing Area Update Request 3. Context Request

23.401 5.3.3.6 通过MME交互 且S-GW改变的 路由区更新(RAU). UE离开LTE接入网 已经在2G/3G网 通过RA

U让核心网 更新资源

4. Context Response 5. Security Functions 6. Context Acknowledge

7. Create Session Request 8. Modify Bearer Request9. PCEF Initiated IP-CAN Session Modification

10. Modify Bearer Response 11. Create Session Response 12. Update Location

(A)

13. Cancel Location 13. Cancel Location Ack 14. S1-AP: S1 Release CommandRelease E-UTRAN connection

14. S1-AP: S1 Release Complete

15. Update Location Ack 16. Delete Session Request (B) 17. Delete Session Response 18. Routeing Area Update Accept 19. Routeing Area Update Complete 20. Service Request 21. RAB Assignment Request 21b. RAB Assignment Response 22. Modify Bearer Request 22b. Modify Bearer Response

全部LTE信令流程图

RRC IDLE下，如果有上行数据或者上行信令(与TAU无关的)发送， UE可以在TAU request消息中设置“active”标识， 来请求建立用户面资源，并且TAU完成后保持NAS信令连接。 如果没有设置"active"标识，则TAU完成后释放NAS信令连接。 这个是IDLE下发起的不设置"active"标识的正常TAU流程图

全部LTE信令流程图

这个是RRC Connect状态下发起的的正常TAU流程图(都不设置"active"标识)UE eNB EPC

connected下当UE 进入的 TAI不在 保存的TAI list内

1. ULInformationTransfer (包含TAU request消息)2. UPLINK NAS TRANSPORT (包含TAU request消息)

3. MME间更新 UE上下文等

4. DOWNLINK NAS TRANSPORT (包含TAU Accept消息) 5. DLInformationTransfer (包含TAU Accept消息)

6. ULInformationTransfer (包含TAU Complete消息) 7. UPLINK NAS TRANSPORT (包含TAU Complete消息)

全部LTE信令流程图

Spec 23.401 5.3.4.1 US triggered “Service Request” ProcedureUE eNodeB MME Serving GW PDN GW PCRF HSS

1. NAS: Service Request 2. NAS: Service Request 3. Authentication/Security 4. S1-AP: Initial Context Setup Request 5. Radio Bearer Establishment 6. Uplink Data 7. S1-AP: Initial Context Setup Complete 8. Modify Bearer Request 9. Modify Bearer Request (A)10. PCEF Initiated IP-CAN Session Modification

11. Modify Bearer Response 12. Modify Bearer Response

全部LTE信令流程图

UE发起的”service request”流程

全部LTE信令流程图

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