Patent ID: 7043244

Claim:
A method of operating a telecommunications system in which mobile terminals communicate with base station transceivers over an air interface, a communication to another user terminal being supported in macrodiversity by radio links between a plurality of base station transceivers and a mobile terminal, the radio links in macrodiversity having a set of common radio link configuration parameters, the method comprising the steps of: transmitting a radio link configuration change message to each of the plurality of base station transceivers and the mobile terminal, the radio link configuration change message defining a new transport format set which represents a combination of valid radio link configuration parameters that can be used on the radio links; and waiting before using the new meaning of the transport format set until an acknowledgement has been received from at least one base station transceiver in transmitting communication with the mobile terminal, at least one base station transceiver in receiving communication with the mobile terminal and the mobile terminal.