TCP-aware power control in wireless networks
AssigneeSprint Communications Company L.P.
InventorsHui Zang, Ashwin Sridharan, Majid Ghaderi
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Abstract
A method, system, and medium are provided for controlling power usage in a wireless telecommunications network, the method comprising transmitting a pilot signal to a mobile station over a wireless channel, receiving a response that includes a signal-to-interference-and-noise associated with said pilot signal, determining an instantaneous channel rate to be used for a subsequent data transmission to said mobile station based at least on said signal-to-interference-and-noise, selecting a transmit power level for said data transmission; and transmitting data to said mobile station at said channel rate and said power level.
Claims12
Non-transitory computer-readable media having computer-executable instructions embodied thereon that, when executed, facilitate a method of controlling power usage in a wireless telecommunications network, the method comprising:
- transmitting a pilot signal to a mobile station using a wireless channel;
- receiving a response that includes a signal-to-interference-and-noise ratio associated with said pilot signal;
- determining an instantaneous channel rate to be used for a subsequent data transmission to said mobile station based at least on said signal-to-interference-and-noise ratio;
- selecting a transmit power level for said data transmission, the transmit power level selected based at least on a length of a transmission queue, wherein:
- (1) the transmit power level is a higher power level if the transmission queue length is below a predetermined threshold length, wherein the higher power level is selected to be full power, and
- (2) the transmit power level is a lower power level if the transmission queue length is above the predetermined threshold length, wherein the lower power level is selected to be a lowest power level such that an expected transmission error rate remains below a predetermined maximum transmission error rate;
- and
- transmitting data to said mobile station at said channel rate and said transmit power level.
Non-transitory computer-readable media having computer-executable instructions embodied thereon that, when executed, facilitate a method of controlling power usage in a wireless telecommunications network, the method comprising:
- selecting a transmit power level for a data transmission to a mobile station based on a length of a transmission queue, wherein:
- (1) the transmit power level is a higher power level if the transmission queue length is below a predetermined threshold length, wherein the higher power level is selected to be full power, and
- (2) the transmit power level is a lower power level if said queue length is above the predetermined threshold length, wherein the lower power level is selected to be a lowest power level such than an expected transmission error rate remains below a predetermined maximum transmission error rate;
- and
- transmitting data from said queue to said mobile station at said power level.
A base transceiver station that performs a method of controlling power usage in a wireless telecommunications network, the method comprising:
- transmitting a pilot signal to a mobile station over a wireless channel;
- receiving a response that includes a signal-to-interference-and-noise associated with said pilot signal;
- determining an instantaneous channel rate to be used for a subsequent data transmission to said mobile station based at least on said signal-to-interference-and-noise;
- selecting a transmit power level for said data transmission, the transmit power level selected based on the length of a TCP queue, wherein:
- (1) the transmit power level is selected to be full power if the TCP queue length is below a predetermined threshold length, the predetermined threshold length comprising one-half of a maximum length for the TCP queue, and
- (2) the transmit power level is selected to be at a lowest power level such that an expected transmission error rate remains below a predetermined maximum transmission error rate if the TCP queue length is above the predetermined threshold length;
- and
- transmitting data to said mobile station at said channel rate and said power level.
Dependencies are inferred from the claim text.