Patent ID: 7969936

Claim:
A method for improving the quality of control signalling based on signalling messages controlling speech or data transmission over an air interface between a first radio terminal and a second radio terminal of a radio communications system, comprising: transmitting said speech or data in at least one traffic channel of said radio communications system, transmitting a first signalling message with content in a first control channel associated with said at least one traffic channel between said first radio terminal and said second radio terminal, wherein said first radio terminal is a mobile station and said second radio terminal is a base station, or wherein said first radio terminal is a base station and said second radio terminal is a mobile station, and transmitting a second signalling message with identical content to the first signalling message in a second control channel associated with said at least one traffic channel between said first radio terminal and said second radio terminal, wherein the second control channel is separate from the first control channel, and wherein the second signalling message is always transmitted if the first signalling message is transmitted.