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Wireless LAN system, communication terminal and communication program

  • US 7,924,768 B2
  • Filed: 10/21/2004
  • Issued: 04/12/2011
  • Est. Priority Date: 10/22/2003
  • Status: Expired due to Fees
First Claim
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1. A wireless LAN system in which data communication between a wireless station whose connection method as a method for wireless connection can be set to one of a plurality of connection methods and a wireless access point whose connection method has been preset to one of the connection methods is made possible by setting the connection method of the wireless station to a method identical with the connection method of the wireless access point,the wireless station including:

  • a method switching system that switches the connection method of the wireless station for the wireless connection to the wireless access point to each of the connection methods in turn at preset time intervals;

    an announcement transmission system that transmits announcement data, for announcing the switched connection method to devices around the wireless station, according to the switched connection method on each switching of the connection method by the method switching system; and

    a method setting system that stops the connection method switching by the method switching system when notification data, for notifying the wireless station that wireless connection by use of the same connection method as the transmitted announcement data is possible, is received during a period between the transmission of the announcement data by the announcement transmission system and the connection method switching by the method switching system to the next connection method and thereby sets the connection method at the point of the stop of the connection method switching as the connection method for the wireless connection to the wireless access point,the wireless access point including a notification transmission system that transmits the notification data to the wireless station when the announcement data transmitted according to the preset connection method is received from the wireless station,wherein the notification transmission system of the wireless access point transmits a request reminder data, for reminding the wireless station to request permission of the wireless access point for wireless connection, to the wireless station as the notification data when the announcement data transmitted according to the preset connection method is received and thereafter transmits an association reply, giving the wireless station permission for the wireless connection, to the wireless station when an association request as data for requesting the permission for the wireless connection is received from the wireless station,wherein the notification transmission system of the wireless access point transmits the notification data to wireless stations transmitting the announcement data satisfying a prescribed condition according to the preset connection method,wherein the wireless access point includes an announcement collection system that collects the announcement data transmitted according to the preset connection method for a prescribed period of time,wherein, after the collection of the announcement data by the announcement collection system is finished, the notification transmission system transmits the notification data to a wireless station transmitting announcement data according to the same connection method as announcement data included in the collected announcement data,wherein the announcement transmission system of the wireless station transmits the announcement data associating identification data for identifying the wireless station,wherein the announcement collection system of the wireless access point collects the announcement data together with the identification data associated with the announcement data, andwherein the notification transmission system transmits the notification data only to wireless stations transmitting announcement data associated with the same identification data as announcement data already collected by the announcement collection system.

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