Patent ID: 8363582
Filing Date: 2013-01-29
Classification: H04W

Abstract:
1. A wireless communication method for performing wireless communication between one access point and one or more subordinate wireless communication stations based on a packet transmission system which allocates wireless bands by CSMA/CA, the method comprising: transmitting to the access point, from said wireless communication station, which is about to communicate while intermittently receiving a multicast service, a request packet describing information on said multicast service and a request to receive a multicast packet in intermittent reception; upon receiving said transmitted request packet in the access point, reading, in the access point, the multicast service information described in said request packet and confirming whether or not said described multicast service is a multicast service currently being provided based on intermittent reception; upon confirming that said described multicast service is not a multicast service being provided, calculating, in the access point, an intermittent reception timing to ensure quality of said multicast service; describing the calculated intermittent reception timing information in a packet and replying from the access point with said packet describing the calculated timing information to said wireless communication station; upon confirming that said described multicast service is a multicast service being provided, describing, in a packet, intermittent reception timing information of the multicast service being provided, and replying from the access point with said packet describing the service timing information to said wireless communication station; reading, in the wireless communication station, the intermittent reception timing information described in said replied packet describing the service timing information, and executing transition to an Awake state or a Doze state according to said intermittent reception timing; and transmitting, from the access point, the multicast packet to said wireless communication stations according to said calculated intermittent reception timing or the intermittent reception timing of said multicast service being provided.