Terminal transmit power control with link adaptation
View Patent ↗Methods for coordinating power usage and link adaptation in wireless communications are described. Terminals and/or access points (APs) may attempt to modify terminals' transmit power in relation to a desired communication data transfer rate. Link adoption may also be used in conjunction with the described methods.
1. A method for controlling power comprising the steps of:
determining if a change in data rate has occurred;
comparing said current data rate to a previous data rate;
modifying a transmit power of a mobile terminal when said comparing step indicates a change in data rate greater than or equal to a predetermined rate change level; and
determining if a network is at or near capacity,
wherein said modifying step is at least partially based on an outcome of said network determining step.
2. The method according to claim 1 , wherein said predetermined rate change level is 2.
3. The method according to claim 1 , wherein said determining step determines that said change in data rate has occurred based on a change in data type.
4. A system for modifying transmit power for a mobile terminal transmitting data to an access point comprising:
a processor that determines if a change in data rate has occurred, compares a current data rate to a previous data rate, and modifies said transmit power of said mobile terminal when said change in data rate is greater than or equal to a predetermined data rate change level.
5. The system according to claim 4 , wherein said processor is in said mobile terminal.
6. The system according to claim 4 , wherein said processor is in said access point.
7. The system according to claim 4 , further comprising:
an antenna that transmits said data at an adjusted transmit power level.