Fast roaming system

Details Fast roaming system Fast roaming system

2011-08-16

2011-08-16

Chriss, Andrew (Department: 2472)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S328000, C370S338000, C455S432100, C455S436000

Reexamination Certificate

active

08000298

ABSTRACT:
A fast roaming system for changing, in a short period of time, the connection to a roaming destination AP (access point) providing a better communication environment, and for improving a roaming completion rate. In response to a search process performed by a mobile terminal, individual APs transmits AP data required for roaming directly to the mobile terminal. The mobile terminal performs the passive scanning search or the active scanning search for the peripheral APs at short time intervals, and obtains and stores the latest AP data in an AP data table. As a result, only the latest data for the connectable peripheral AP can be stored as a roaming destination in the AP data table. Furthermore, since the order condition is set by the mobile terminal to select the roaming destination AP, there is a high probability that the roaming is completed when the peripheral AP is first selected. Therefore, only a short period of time is required until the roaming is completed.

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