Patent ID: 7116983

Claim:
A timeslot selection method in which a mobile station selects a transmitting timeslot used by said mobile station in a wireless packet transmission system where said mobile station communicates with a base station, said timeslot selection method comprising the steps of: obtaining a propagation loss of a received signal in said mobile station based on a transmission power of said base station and a received power of said received signal received from said base station; receiving an occupation state and an interference amount of an uplink timeslot from said base station; obtaining a desired wave power of said base station from a transmission power of said mobile station and said propagation loss; obtaining a ratio between said desired wave power and said interference amount in said base station for said uplink timeslot in which said occupation state is idle; and selecting an idle timeslot, as a transmission timeslot, which has the lowest ratio between said desired wave power and said interference amount among idle timeslots each of which idle timeslots satisfies a predetermined ratio between desired wave power and said interference amount.