Patent ID: 7693159
Filing Date: 2010-04-06
Classification: H04L,H04W

Abstract:
1. A method of reducing the number of hops between a first terminal and a second terminal through a plurality of routers for relaying data, the method comprising: when at least one of the first terminal and the second terminal is a mobile terminal and the mobile terminal moves, comparing the number of hops on a data transmission path acquired in the past between the first terminal and the second terminal before the mobile terminal moves to that on a data transmission path currently acquired between the first terminal and the second terminal after the mobile terminal moves; and if the comparing step indicates that the number of hops on the data transmission path currently acquired is greater than that on the data transmission path acquired in the past, starting rerouting of the data transmission path between the first terminal and the second terminal to select a new path that makes the number of hops on the new path smaller than that of the data transmission path currently acquired between the first and second terminals; wherein when the data transmission path is rerouted, data of the number of the hops is handed over by any one of: direct transmission of the data from an access router accessed by the mobile terminal before the mobile terminal moves to another access router accessed by the mobile terminal after the mobile terminal moves; transmission of the data via another router; and transmission of the data via the mobile terminal.