Patent ID: 7016316

Claim:
A synchronous TDD system for the transmission of speech and/or data between a master unit (FP) and at least two slave units (PP 1 , PP 2 ) which are associated with the master unit (FP), the master unit (FP) including transmission means for transmitting a synchronization signal (beacon) in fixed time slots and the slave units (PP 1 , PP 2 ) including respective receiving means for receiving and processing the synchronization signals transmitted by the master unit, the receiving means of the slave units (PP 1 , PP 2 ) allocating fixed time slots which are not used for a transmission of synchronization signals they are ready to receive or fixed time slots they are ready to receive with a setting which does not allow the reception of signals from the master unit (FP), the slave units (PP 1 , PP 2 ) also including transmission means which use one of the time slots in which the receiving means of the slave units (PP 1 , PP 2 ) are ready to receive, but reception of signals from the master unit (FP) is not enabled, in order to transmit signals for initiating a communication between themselves.