Patent ID: 8081613

Claim:
A wireless communication system including a plurality of wireless communication apparatuses supporting an access point mode and a station mode and a first access point apparatus of a first group including multiple wireless communication apparatuses, the system comprising: a unit configured to cause the first access point apparatus to select one of the plurality of wireless communication apparatuses and activate the selected wireless communication apparatus as a second access point apparatus of a second group; a unit configured to establish the second group including the second access point apparatus and multiple wireless communication apparatuses by the second access point apparatus; and a transmission power control unit configured to control the transmission power of the second access point apparatus and the multiple wireless communication apparatuses included in the second group after the second group is established, wherein the first access point apparatus comprises: a transmission unit configured to transmit a message to the multiple wireless communication apparatuses constituting the second group, wherein the message comprises at least one of identification information identifying the second group and medium information used in the second group.