Patent ID: 7773986

Claim:
A communications method relating to a multimedia broadcast multicast service (MBMS) of multicasting or broadcasting a multimedia data to a plurality of mobile stations in a communications system, said communications method comprising: a power ratio transmitting step of transmitting information about a power ratio between a power of a common control physical channel used for multicasting or broadcasting said multimedia data in each of given cells and a power of a common pilot channel used for transmitting an information on reference of timing in each of the given cells; a service information transmitting step of transmitting service information indicating a state of an MBMS service in each of the given cells; a power ratio information receiving step of receiving the information about the power ratio transmitted in said power ratio transmitting step; a service information receiving step of receiving the service information transmitted in said service information transmitting step; a cell selecting step of acquiring a set including a plurality of cells from which a mobile station can receive an MBMS on the basis of the information about said power ratio which is received in said power ratio receiving step, and said service information received in said service information receiving step; a decoding step of receiving a signal transmitted using said common control physical channel in each of the plurality of cells included in the set acquired in said cell selecting step, and decoding said signal to acquire a plurality of decoded signals; and a selectively-combining step of selecting a signal from the plurality of decoded signals acquired in said decoding step and thereby obtaining an output signal.