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

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


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    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.

    20. 謝謝大家