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Proxy Mobile IPv6
Proxy Mobile IPv6 (or PMIPv6, or PMIP) is a network-based mobility management protocol standardized by IETF and is specified in RFC 5213. It is a protocol for building a common and access technology independent of mobile core networks, accommodating various access technologies such as WiMAX, 3GPP, 3GPP2 and WLAN based access architectures. Proxy Mobile IPv6 is the only network-based mobility management protocol standardized by IETF.
==Introduction==
Network-based mobility management enables the same functionality as Mobile IP, without any modifications to the host's TCP/IP Protocol stack. With PMIP the host can change its point-of-attachment to the Internet without changing its IP address. Contrary to Mobile IP approach, this functionality is implemented by the network, which is responsible for tracking the movements of the host and initiating the required mobility signalling on its behalf. However, in case the mobility involves different network interfaces, the host needs modifications similar to Mobile IP in order to maintain the same IP address across different interfaces.
The "SaMOG" (S2a Mobility based on GTP) study item in 3GPP defines the interworking between mobile packet core and a trusted WLAN access network ((3GPP TR 23.852 )). The interface that SaMOG defines for this interworking is the 3GPP S2a GTP interface.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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