Method for multi-antenna uplink transmission

A method in abuse station, the method comprising:

• receiving configuration information related to a future multi-antenna uplink transmission wherein the received information is based on terminal quantize version of a power ratio of a second received reference signal power to a first received reference signal power, the first received reference signal power based on channel measurements of a first antenna of the wireless terminal and the second received reference signal power based on channel measurements of a second antenna of the wireless terminal;
• selecting a multi-antenna transmission mode for uplink transmission from the wireless terminal based on the received configuration information and an uplink signal to noise ratio estimate;
• and
• sending an indication of the selected a multi-antenna transmission mode to the wireless terminal in a downlink control channel.

A wireless terminal comprising:

• a first antenna;
• a second antenna;
• a transceiver coupled to the first antenna and coupled to the second antenna;
• a controller coupled to the transceiver, the controller configured to control operations of the wireless terminal;
• a channel measurement module coupled to the first antenna and coupled to the second antenna, the channel measurement module configured to determine a first received reference signal power based on a first channel measurement corresponding to the first antenna and configured to determine a second received reference signal power based on a second channel measurement corresponding to the second antenna;
• and
• a power ratio determination module coupled to the controller, the power ratio determination module configured to determine a ratio of the first received reference signal power to the second received reference signal power,
• wherein the transceiver is configured to transmit configuration information based on information derived from the quantized version of the power ratio of the second received reference signal power to the first received reference signal power.