System, method, and apparatus for establishing headroom for a mobile station
AssigneeMotorola, Inc.
InventorsJohn D. Reed, Hao Bi
Life of this patent
Estimating the term…
Abstract
A system, method, and apparatus for establishing headroom for a mobile station operating in a wireless communication system by determining (230) a communication channel variance condition and establishing (245) a headroom value based on the communication channel variance condition. The headroom value may be further revised by determining (260) if a battery condition in a mobile station relates to a low battery level and increasing (265) the headroom value in order to decrease the maximum data rate. Modifications to headroom allow data rates to be tailored to specific channel variance conditions and battery conditions.
Claims15
A method for establishing headroom to provide margin in determining available transmit power value for a mobile station operating in a wireless communication system comprising the steps of:
- determining, by the mobile station, a communication channel variance condition, wherein the communication channel variance condition is at least one of a primary pilot power variance, fading period and fade depth estimate, or a peak-to-average estimate within an adaptive measurement interval;
- and
- establishing, by the mobile station, a headroom value based on the communication channel variance condition.
A mobile station comprising:
- means for determining, by the mobile station, a communication channel variance condition, wherein the communication channel variance condition is at least one of a primary pilot power variance, fading period and fade depth estimate, or a peak-to-average estimate within an adaptive measurement interval;
- and
- means for establishing, by the mobile station, a headroom value based on the communication channel variance condition.
A wireless communication system comprising:
- a base station;
- at least one mobile station;
- means for determining, by the at least one mobile station, a communication channel variance condition, wherein the communication channel variance condition is at least one of a primary pilot power variance, fading period and fade depth estimate, or a peak-to-average estimate within an adaptive measurement interval;
- and
- means for establishing, by the at least one mobile station, a headroom value based on the communication channel variance condition.
Dependencies are inferred from the claim text.