Patent ID: 7782829

Claim:
A method, comprising: exchanging signaling information with a base station in an orthogonal frequency division multiple access network; feeding back a channel gain to the base station after transmission; receiving an allocation comprising one or more sub-channels from the base station using throughput-per-joule metrics, wherein the allocation reduces energy usage and the throughput-per-joule metrics uses either the following sum-utility metric: U = arg ⁢ ⁢ max c ⁢ ∑ i ⁢ R i P i ⁡ ( R i ) = arg ⁢ ⁢ max c ⁢ ∑ i ⁢ U i ⁡ ( R i ) or using the following product-utility metric: U = arg ⁢ ⁢ max c ⁢ ∏ i ⁢ R i P i ⁡ ( R i ) = arg ⁢ ⁢ max c ⁢ ∑ i ⁢ log ⁡ ( R i P i ⁡ ( R i ) ) = arg ⁢ ⁢ max c ⁢ ∑ i ⁢ U i ⁡ ( R i ) wherein U i is the utility function for the i th user, R i is the transmission rate for the i th user, and P i is the power consumed for the i th user; and transmitting to the base station based on the allocation using throughput-per-joule metrics.