Patent ID: 7363003

Claim:
A mobile communication network comprising a first, a second and a third mobile terminals, a server for storing communication charge information for each user of said mobile terminals, and a first mobile communication network for relaying communication signals between mobile terminals, wherein: each of said first, second and third mobile terminals has a first wireless interface for exchanging communication signals with said first mobile communication network, each of said first and second mobile terminals has a second wireless interface for exchanging communication signals with each other through a second mobile communication network different in communication protocol from said first mobile communication network, and wherein said second mobile terminal operates as a relay for relaying communication signals between said first and third mobile terminals when the first mobile terminal cannot directly communicate with said first mobile communication network and the second mobile terminal is able to communicate with both the first mobile terminal and said first mobile communication network, and said server includes a memory configured to store, in association with a user identifier of a user of said second mobile terminal, communications charges to be charged to the user and a credit value accumulated arising from use of the second mobile terminal as a relay, and adds to the stored credit value a service point which is awarded to the second mobile terminal for relaying the communication signals between said first and third mobile terminals and calculated based on a predetermined criterion.