| 摘要 |
<p>A mobile radio communication system which is operable to provide subscribers having MSs with a plurality of communications types by which they can communicate with others either using that system or another system by way of an interface link, said communication types comprising a full duplex format and a half duplex format, said system being arranged so that when a communication is initiated in a half duplex format by a first one of the MSs in a region served by the system and is intended for receipt by a second one of the MSs in a region not served by the system but served by another system connected to the said system only by a full duplex link, the system is operable: (i) to detect that the communication has been initiated in half duplex format and cannot reach the second MS directly in half duplex format and (ii) to send a signal back to the first MS or to another transceiver in communication with the full duplex link, indicating that the communication can only be re-sent in full duplex format and optionally to initiate re-sending of the communication automatically in a full duplex format, so that the communication can be delivered via the interface link to the second MS. <IMAGE></p> |
