Network based mobility management in the evolved 3gpp core network
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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

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


Outline
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
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.


Proxy mobile ipv6 1 2
Proxy Mobile IPv6 (1/2)


Proxy mobile ipv6 2 2
Proxy Mobile IPv6 (2/2)

  • The local mobility anchor (LMA).

  • The mobile access gateway (MAG).


Ip based mobility management
IP-based mobility management

  • Network-based mobility management

    ex: PMIPv6

  • Client-based mobility management

    ex: MIP, MIPv6



The pmipv6 based mobility architecture of the evolved packet system 2 4
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)


The pmipv6 based mobility architecture of the evolved packet system 3 4
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.


The pmipv6 based mobility architecture of the evolved packet system 4 4
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)


Non optimized handovers 1 2
Non-optimized handovers (1/2)



Optimized handovers 1 5
Optimized handovers(1/5)


Optimized handovers 2 5
Optimized handovers(2/5)

  • Mobility Management Entity (MME)

  • HRPD Access Network (HRPD AN)

  • HRPD Serving Gateway (HSGW)


Optimized handovers 3 5
Optimized handovers(3/5)

  • Pre-Registration

  • Preparation

  • Execution


Optimized handovers 4 5
Optimized handovers(4/5)


Optimized handovers 5 5
Optimized handovers(5/5)



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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