Method and apparatus for feedback error detection in a wireless communications systems

A method for use in a base station having multiple antennas, comprising the steps of:

• receiving antenna control information from a mobile station;
• transmitting the received antenna control information to the mobile station;
• and
• transmitting one or more signals to the mobile station in accordance with the received antenna control information.

A method for use in a mobile station, comprising the steps of:

• generating antenna weights for use at a base station;
• transmitting antenna control information indicative of the generated antenna weights to the base station;
• receiving one or more signals from the base station;
• estimating, based on the one or more signals, antenna weights applied at the base station in transmitting the one or more signals;
• and
• processing the one or more signals according to the estimated antenna weights.

A method for use in a mobile station, comprising the steps of:

• selecting one of a plurality of antennas for use in transmitting signals from a base station;
• transmitting antenna control information indicative of the selected antenna to the base station;
• receiving one or more signals from the base station;
• determining which of the base station antennas was used for transmitting the one or more signals from the base station;
• and
• processing subsequently received signals from the base station as if the subsequently received signals were transmitted using the determined base station antenna.

A method for use in a mobile station, comprising the steps of:

• receiving one or more signals from a base station;
• determining a set of antenna weights applied at the base station in transmitting the one or more signals based on a set of processed signals, each processed signal generated by processing the one or more signals according to a different set of antenna weights;
• and
• processing the one or more signals according to the determined set of antenna weights.

A mobile station comprising:

• means for generating antenna weights to be applied at a base station having a plurality of antennas;
• means for transmitting antenna control information indicative of the generated antenna weights to the base station;
• means for determining, based on one or more signals received from the base station, antenna weights applied at the base station in transmitting the one or more signals;
• and
• means for processing the one or more signals or subsequent signals as if transmitted from the base station using the determined antenna weights.

A base station comprising:

• a plurality of antennas;
• means for receiving, from a mobile station, a feedback message including antenna control information indicative of antenna weights to be used for transmissions from the plurality of antennas;
• and
• means for transmitting, to the mobile station, a feed forward message including the antenna control information, as received in the feedback message, and for subsequently transmitting one or more signals to the mobile station from the plurality of antennas using the antenna weights indicated by the antenna control information.