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Wireless base station, communication system, belonging information management method and storage medium for storing program

  • US 8,385,260 B2
  • Filed: 12/08/2008
  • Issued: 02/26/2013
  • Est. Priority Date: 12/06/2007
  • Status: Active Grant
First Claim
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1. A wireless base station of a wireless meshed network in which a plurality of terminals arbitrarily move between wireless base stations, said wireless base station comprising:

  • a terminal interface function unit which communicates with the plurality of terminals belonging to a corresponding one wireless base station in the wireless meshed network comprised of said one wireless base station and a number of other wireless base stations, the plural terminals arbitrarily moving between the wireless base stations;

    a wireless base station interface function unit which communicates with the other wireless base stations composing the wireless meshed network;

    a management table storage unit which stores a belonging information management table which includes belonging information of a terminal in each of the wireless base stations with an update number, which update number is incremented by one (1) whenever the terminal is added or deleted in the belonging information, for judgment of new or old of an update state of the belonging information; and

    a belonging information update unit which updates the belonging information of said one wireless base station when a change in a belonging status of the terminal due to addition or deletion has been detected by corresponding information received through the terminal interface function unit;

    a first notification information transmission unit which transmits, when the belonging information is updated, first notification information including an updated portion in the belonging information together with the incremented update number to all other wireless base stations through the wireless base station interface function unit,wherein the belonging information update unit updates, when the first notification information is received from other wireless base station, the belonging information management table stored in said one base station based on the first notification information;

    a periodical information transmission unit which transmits periodical transmission information including the number of wireless base stations included in the belonging information management table of said one wireless base station together with respective incremented update numbers corresponding to each wireless base station to adjoining wireless base stations through the wireless base station interface function unit; and

    a second notification information transmission unit which transmits second notification information, which includes the number of wireless base stations included in the belonging information management table of said one wireless base station together with the respective incremented update numbers and the number of belonging terminals corresponding to each wireless base station, to all the other wireless base stations through the wireless base station interface function unit, when finding an old update status of the belonging information management table in other wireless base stations indicated by the periodical transmission information,wherein the belonging information update unit updates, when the second notification information is received from other wireless base station, the belonging information management table stored in said one wireless base stations based on the second notification information.

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