Patent ID: 7826403

Claim:
A wireless communication method by a wireless communication control apparatus for controlling wireless communication using a control channel and a plurality of call channels that can be allocated to any of a plurality of wireless communication apparatuses that are identified by information transmitted over the control channel, characterized by comprising: a transport data generating step of generating transport data with a frame structure having at least three areas of a synchronization word, channel identification information and control information; and a transmitting step of transmitting a modulated signal subjected to four-level Frequency Shift Keying (FSK) modulation corresponding to the transport data generated at said transport data generating step to at least one of said plurality of wireless communication apparatuses over the control channel; wherein said transmitting step includes a step of transmitting a modulated signal alternatively subjected to FSK modulation corresponding to two-level symbol whose deviation from the carrier frequency is little, among four-level symbols in correspondence with the area for the control information when the area for the control information included in the transport data generated at said transport data generating step is not used for transmitting the controlling message.