Packet transmission method and communication system

Details Packet transmission method and communication system Packet transmission method and communication system

2008-03-25

2008-03-25

Shah, Chirag G. (Department: 2616)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S432000, C370S331000

Reexamination Certificate

active

07349390

ABSTRACT:
The object is to prevent occurrence of packet loss in Cellular IP and a drop of TCP throughput due to duplication of packets. On the occasion of relaying a packet from correspondent, a relay router multicasts a router advertisement to access routers forming respective cells into which a target mobile terminal might move. The mobile terminal receives the router advertisements from the neighbor access routers, calculates a difference between reception times of the packets from the respective access routers, and specifies a relay router to perform multicasting. Then the mobile terminal transmits delay information of a delay to be added to each path in multicasting by the relay router, to the relay router thus specified. The relay router adds the delay to each path in multicasting on the basis of the delay information.

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