Packet relay method and home agent

Details Packet relay method and home agent Packet relay method and home agent

2011-05-24

2011-05-24

Nguyen, Brian D (Department: 2472)

Multiplex communications

Communication over free space

Message addressed to multiple destinations

C370S315000

Reexamination Certificate

active

07948927

ABSTRACT:
The present invention is to reduce consumption of band resources and delay in communication as a whole. A functional configuration of a home agent according to the present invention will be described as follows. A Mobile IP protocol process portion902has a function of receiving/transmitting a registration request message/registration acknowledgement message about movement of a mobile host. An explicit multicast packet process portion903has a function of analyzing receivers' addresses written in an explicit multicast type packet, and a function for changing the packet. In addition, the explicit multicast packet process portion903has a function of transferring an explicit multicast packet when the packet to be transferred is not encapsulated with an IP header addressed to CoA of a mobile host in packet transfer to a packet-undelivered host. A Mobile IP packet transfer portion904has a function of encapsulating an explicit multicast type packet with an IP header addressed to CoA of a mobile host and transferring the encapsulated packet to the mobile host.

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International Search Report Dated Aug. 1, 2006.

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