Patent ID: 8687559

Claim:
A GERAN base station, comprising a transceiver which is operable to communicate with a first mobile station via a first VAMOS channel; communicate with a second mobile station via a first subchannel of a second corresponding VAMOS channel; and use a control channel of the second VAMOS channel which is offset by 4 or 8 TDMA frames with respect to a control channel of the first VAMOS channel, wherein the second VAMOS channel is operated at half rate and wherein the transceiver is operable to: communicate with a third mobile station via a second subchannel of the second VAMOS channel, and select the first, second and third mobile station by evaluating interference between (a) the first VAMOS channel and the first subchannel of the second VAMOS channel and (b) the first VAMOS channel and the second subchannel of the second VAMOS channel.