Patent ID: 7366138
Filing Date: 2008-04-29
Classification: H04L,H04W,Y02D

Abstract:
1. A wireless packet communication method in which a carrier-sense multiple access/collision avoidance (CSMA) technique is used to let a wireless terminal exchange packet data with a plurality of base stations that are respectively connected to core-net routers and different in carrier signal frequency, and said core-net routers are managed and controlled by a server, said method comprising the steps of: causing said wireless terminal to measure the electric field strength of each carrier signal during a back-off period, to create move destination information in accordance with the measurement result, and to transmit the created move destination information and the base station address currently used for communication to said server; and causing said server to determine a base station at the move destination for said wireless terminal in accordance with said move destination information and the base station address currently used for communication, to identify a router connected to the determined base station at the move destination, and to exercise management and control to allow the packet data addressed to said wireless terminal to be transmitted to the router from said base station at the move destination in addition to the base station currently used for communication.