Patent ID: 8737324

Claim:
A method for communication from a second mobile station to a base station or vice versa, the method comprising: communicating by the second mobile station or the base station, in a given multiframe, a first SACCH (Slow Associated Control CHannel) slot associated with a TCH (Traffic CHannel) of the second mobile station via a second VAMOS (Voice services over Adaptive Multi-user on One Slot) subchannel, and a redundant second SACCH slot associated with the same TCH of the second mobile station, the second SACCH slot being communicated via the second VAMOS subchannel if the second VAMOS subchannel is determined to be in discontinuous transmission mode, and the second SACCH slot being communicated via a first VAMOS subchannel if the first VAMOS subchannel is determined to be in discontinuous transmission mode, wherein the first and second VAMOS subchannels share a common time slot and have the same carrier frequency.