Patent ID: 7162272

Claim:
Method for implementing transmission antenna diversity in a mobile communications system, which includes at least one receiving unit and at least one transmitting unit, adapted for data transmission connection over a radio path, said method comprising: transmitting a signal through at least one of at least two transmission antenna routes of the transmitting unit, the signal containing signal information which identifies the transmission antenna routes in the transmitting unit; choosing, in the receiving unit, an optimum transmission antenna route based at least on signals received from the transmitting unit that contain information identifying the transmission antenna route: making the chosen transmission antenna route known to the transmitting unit with an antenna route choice notification; and transmitting user data from the transmitting unit through a transmission antenna route selected for use in the transmitting unit, wherein the selection is based on the antenna route choice notification; and verifying, in the receiving unit, the transmission antenna route selected for use wherein the verification is based on information in the user data, and identifying the transmission antenna route selected for use.