Patent ID: 7990903
Filing Date: 2011-08-02
Classification: G06Q,H04W

Abstract:
1. A communication terminal device for forming a group with at least one other communication terminal device and performing communication within the group, the communication terminal device comprising: a transmission unit which transmits at least an annunciation signal and/or a packet including a communication parameter to the at least one other communication terminal device; a reception unit which receives at least an annunciation signal and/or a packet including a communication parameter from the at least one other communication terminal device; and a control unit which exercises communication control in accordance with a communication parameter pertaining to a network, the control unit responding to a communication parameter, different from a communication parameter which is being used in communication in progress, included in a packet received by the reception unit, wherein the control unit makes a determination as to joining and exiting in the middle of the communication within the group and changing over a function as a coordinator which transmits the annunciation signal, based on at least the communication parameter, and the communication terminal device accepts transfer of the coordinator function and takes over the coordinator function to transmit the annunciation signal, in response to a change request frame for requesting the changeover of the coordinator function from another communication terminal device.