A battery power level aware MAC protocol for CDMA wireless networks

A general constraint common to many wireless networks lies in the short lifetime of mobile terminal batteries. Energy efficient protocol that adapt to the terminal battery power level can be used to reduce the effects of this limitation. This paper addresses such power-adaptive algorithms in medium access control (MAC) protocols and in the power control mechanisms for hybrid CDMA/TDMA wireless networks. Our access protocol dynamically schedules CDMA channels to mobiles based on their traffic requests and battery power levels. This technique assigns mobiles with similar traffic requests and battery power levels to one or more slots. Discrete-event simulation has been used to demonstrate that the proposed techniques indeed provide low-power mobiles with increased throughput and reduced latency while reducing power usage.