Data communication in a wireless communication system using space-time coding

A method in a network for controlling data communication in a wireless communication system, the method comprising:

• in a base station having multiple antennas, transmitting data to a mobile station to be used for measuring channel quality, wherein the base station and a mobile station are in a closed loop space-time coding (STC) communication;
• wherein the mobile station determines a first weight matrix based on a number of the multiple antennas of the base station, the weight matrix comprising weight elements;
• wherein the mobile station determines a second weight matrix from the first weight matrix in response to a predetermined condition, wherein the second weight matrix is associated with controlling data output using the multiple antennas of the base station for subsequent transmission;
• and
• receiving a number of STC outputs from the mobile station, wherein the number of STC outputs is associated with the second weight matrix.

A mobile station for controlling data communication in a wireless communication system, the mobile station comprising:

• means for measuring channel quality from data received from a base station having multiple antennas, wherein the base station and a mobile station are in a closed loop space-time coding (STC) communication;
• means for determining a first weight matrix based on a number of the multiple antennas of the base station, the weight matrix comprising weight elements;
• means for determining a second weight matrix from the first weight matrix in response to a predetermined condition, wherein the second weight matrix is associated with controlling data output using the multiple antennas of the base station for subsequent transmission;
• and
• means for providing a number of STC outputs to the base station, wherein the number of STC outputs is associated with the second weight matrix.

A network for controlling data communication in a wireless communication system, the network comprising:

• in a base station having multiple antennas, means for transmitting data to a mobile station to be used for measuring channel quality, wherein the base station and a mobile station are in a closed loop space-time coding (STC) communication;
• wherein the mobile station determines a first weight matrix based on a number of the multiple antennas of the base station, the weight matrix comprising weight elements;
• wherein the mobile station determines a second weight matrix from the first weight matrix in response to a predetermined condition, wherein the second weight matrix is associated with controlling data output using the multiple antennas of the base station for subsequent transmission;
• and
• means for receiving a number of STC outputs from the mobile station, wherein the number of STC outputs is associated with the second weight matrix.