Precoding reference signals for uplink transmission with downlink interference information

An apparatus, comprising:

• a non-transitory memory comprising executable instructions;
• and
• a processor in data communication with the memory and configured to execute the instructions to cause the apparatus to:
• receive, from a base station, one or more signals for use in estimating channel quality for a downlink between the base station and the apparatus;
• determine a first frequency resource and a second frequency resource from a frequency band allocated for transmitting a reference signal (RS);
• compute a first downlink channel quality estimate for the first frequency resource using the one or more signals;
• transmit a first RS precoded with the first downlink channel quality estimate, wherein the first RS comprises the first downlink channel quality estimate;
• compute a second downlink channel quality estimate for the second frequency resource using the one or more signals;
• and
• transmit a second RS precoded with the second downlink channel quality estimate, wherein the second RS comprises the second downlink channel quality estimate.

An apparatus for wireless communications, comprising:

• means for receiving, from a base station, one or more signals for use in estimating channel quality for a downlink between the base station and the apparatus;
• means for determining a first frequency resource and a second frequency resource from a frequency band allocated for transmitting a reference signal (RS);
• means for computing a first downlink channel quality estimate for the first frequency resource using the one or more signals;
• means for transmitting a first RS precoded with the first downlink channel quality estimate, wherein the first RS comprises carries the first downlink channel quality estimate;
• means for computing a second downlink channel quality estimate for the second frequency resource using the one or more signals;
• and
• means for transmitting a second RS precoded with the second downlink channel quality estimate, wherein the second RS comprises carries the second downlink channel quality estimate.

A non-transitory computer readable medium storing instructions to be executed in an apparatus, wherein the instructions when executed in the apparatus perform a method comprising:

• receiving, from a base station, one or more signals for use in estimating channel quality for a downlink between the base station and the apparatus;
• determining a first frequency resource and a second frequency resource from a frequency band allocated for transmitting a reference signal (RS);
• computing a first downlink channel quality estimate for the first frequency resource using the one or more signals;
• transmitting a first RS precoded with the first downlink channel quality estimate, wherein the first RS comprises carries the first downlink channel quality estimate;
• computing a second downlink channel quality estimate for the second frequency resource using the one or more signals;
• and
• transmitting a second RS precoded with the second downlink channel quality estimate, wherein the second RS comprises carries the second downlink channel quality estimate.