Patent ID: 8089950

Claim:
A wireless communication equipment to perform two-way communication between a first transmitter-receiver and a second transmitter-receiver in a time division duplex system, the first transmitter-receiver comprises: control signal generating means for generating a control signal; first wireless frame creating means for creating wireless frame data based on the control signal; and first transmission means for converting the wireless frame data into a wireless signal and transmitting the wireless signal in an up-link of the time division duplex system, and the second transmitter-receiver comprises: first receiving means for receiving the wireless signal transmitted from the first transmission means of the first transmitter-receiver; receiving field level detecting means for comparing a value of a received field level of the wireless signal transmitted from the first transmission means of the first transmitter-receiver and received by the first receiving means during a transient period of the received field level to a reference value that is variable based on the received field level of the wireless signal; wireless frame timing deciding means for deciding a wireless frame timing based on said comparing the value of the transient characteristic to the reference value to establish synchronization with the first transmitter-receiver; coding means for coding the control signal and a voice signal; second wireless frame creating means for creating wireless frame data based on the signal coded by the coding means at the wireless frame timing decided by the wireless frame timing deciding means; and second transmission means for converting the wireless frame data signal created by the second wireless frame creating means into a wireless signal and transmitting the wireless signal in a down-link of the time division duplex system, and the first transmitter-receiver comprises: second receiving means for receiving the wireless signal of the down-link; and decoding means for decoding the wireless signal of the down-link.