主权项 |
1. A method for direct mobile communications (DMC), comprising:
estimating, by a first DMC device, a first pathloss of a first channel from the first DMC device to a controller according to a difference between a known transmit power level for transmissions from the controller to the first DMC device and a measured power level of transmissions from the controller to the first DMC device; estimating, by the first DMC device, a second pathloss of a second channel from the first DMC device to a second DMC device according to a difference between a known DMC device transmit power level and a measured DMC device power level of received DMC signals, the second DMC device being in direct mobile communications with the first DMC device; setting, by the first DMC device, a transmit power level for a transmission to the second DMC device according to the first pathloss and the second pathloss such that the transmit power level for the transmission causes an interference level to the controller less than or equal to an interference level threshold and such that the transmit power level is greater than or equal to a power level threshold, wherein the power level threshold is determined by a minimum receive power of the second DMC device, the second pathloss, a bandwidth of the second channel and a modulation and coding scheme of transmissions to the second DMC device; and transmitting, by the first DMC device, a signal to the second DMC device at the transmit power level. |