| 摘要 |
A method of transmitting wireless messages in a communications system ( 201 ) having a plurality of transceiver units ( 203 ) for receiving and onwardly transmitting wireless messages is disclosed. In a first mode of the system, messages are transmitted from a first transmitter to a target receiver by sequential transmission via at least one transceiver unit ( 203 ). In a second mode, a wireless message containing information identifying a target receiver is transmitted from a first transmitter. The target receiver transmits an acknowledgement signal in response to receipt of the message, and at least one of the transceiver unit ( 203 ) transmits the message if that unit does not detect within a predetermined period the acknowledgement signal or transmission of the message by a predetermined other transceiver unit ( 203 ). |
