Patent ID: 8958744
Filing Date: 2015-02-17
Classification: H04W

Abstract:
1. A wireless communication apparatus for making wireless connection in a first connection attempt state in which a connection request is attempted using a predetermined frequency channel or a second connection attempt state in which a connection request is attempted using a plurality of frequency channels, the apparatus comprising: an interference detection unit configured to detect occurrence of interference in one of the plurality of frequency channels; a frame generation unit configured to generate a connection request frame which includes a first field for requesting a search of the plurality of frequency channels in response to the occurrence of interference, and a second field for indicating whether a corresponding frequency channel is a channel in which the occurrence of interference has been detected; a transmission unit configured to transmit the connection request frame using the predetermined frequency channel in the first connection attempt state, and to transmit the connection request frame using the plurality of frequency channels in the second connection attempt state; a control unit configured to transit to the second connection attempt state in response to the occurrence of interference; and a reception unit configured to receive a response frame for requesting a connection attempt to the plurality of frequency channels; wherein for a connection request frame transmitted using a frequency channel in which no interference has been detected, upon receiving a response frame containing information which indicates that no interference has been detected in the frequency channel, the reception unit stands by for reception of a connection response frame in the frequency channel.