Patent ID: 8594123

Claim:
A distributed peer discovering method for transmitting multimedia data in a wireless peer to peer network, the method comprising: (a) transmitting a request signal including information on multimedia data to be requested by a first terminal, to neighboring terminals, wherein the first terminal transmits a parameter value reflected on which at least one of an idle reproduction buffer capacity of the first terminal and a remaining battery capacity of the first terminal is reflected, to the neighboring terminals through the request signal; (b) when at least one second terminal having the requested multimedia data receives the request signal, determining a backoff duration in accordance with at least one of a signal to interference noise ratio of the request signal, an idle reproduction buffer capacity of the second terminal, and a remaining battery capacity of the second terminal and transmitting a response signal to the first terminal after standing by during the determined backoff duration, wherein the backoff duration is determined by further considering at least one of the idle reproduction buffer capacity of the first terminal and the remaining battery capacity of the first terminal, and wherein the backoff duration is determined in accordance with the transmitted parameter value; and (c) transmitting a message for requesting transmission of the multimedia data to the second terminal transmitting the response signal first received by the first terminal.