1. Network-Based Mobility Management in the Evolved 3GPP Core Network

2. Outline Introduction Proxy Mobile IPv6 IP-based mobility management The PMIPv6-based mobility architecture of the evolved packet system Non-optimized handovers Optimized handovers conclusion

3. Introduction This article provides an overview of the evolved packet core (EPC) specifications that use a network-based mobility mechanism based on Proxy Mobile IPv6 (PMIPv6) to enable mobility between access networks.

4. Proxy Mobile IPv6 (1/2)

5. Proxy Mobile IPv6 (2/2) The local mobility anchor (LMA). The mobile access gateway (MAG).

6. IP-based mobility management Network-based mobility management ex: PMIPv6 Client-based mobility management ex: MIP, MIPv6

7. The PMIPv6-based mobility architecture of the evolved packet system(1/4)

8. The PMIPv6-based mobility architecture of the evolved packet system(2/4) User Equipment (UE) Packet Data Network Gateway (PDN GW) Serving Gateway (S-GW) ACCESS Gateway (A-GW) Evolved Packet Data Gateway (ePDG)

9. The PMIPv6-based mobility architecture of the evolved packet system(3/4) Support of IPv4 UE. Simultaneous access to multiple PDNs. Support for overlapping address spaces of different PDNs. Unique UE identification across accesses on EPC PMIPv6 interface. Providing a PDN GW address to the target access.

10. The PMIPv6-based mobility architecture of the evolved packet system(4/4) Subscription Profile Repository (SPR) Policy and Charging Rules Function (PCRF) Policy and Charging Enforcement Function (PCEF) Bearer Binding and Event Reporting Function (BBERF)

11. Non-optimized handovers (1/2)

12. Non-optimized handovers (2/2)

13. Optimized handovers(1/5)

14. Optimized handovers(2/5) Mobility Management Entity (MME) HRPD Access Network (HRPD AN) HRPD Serving Gateway (HSGW)

15. Optimized handovers(3/5) Pre-Registration Preparation Execution

16. Optimized handovers(4/5)

17. Optimized handovers(5/5)

18. conclusion

19. 佳句 The EPC assigns to the UE an IP address that belongs to the PDN to which it is connected and allows the UE to simultaneously access multiple PDNs.

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