Outer-Loop Power Control Optimization Analysis and a New Algorithm

This paper first presents an outer-loop power control (OLPQ optimization analysis in the EVDO Rev. A (DOrA) system where we focus on the limitations of the power control in different channel fading conditions. Based on the analysis, a new OLPC framework is proposed and simulated in DOrA link-level simulation testbed. It is shown that the new algorithms could bring 1.5%-2% power saving in slow fading channels and only 0.5% enhancement in fast fading scenarios while maintaining a similar or better convergence speed and static state than the conventional approach. Tradeoffs could also be made between convergence speed and power consumption. Also, in order to identify the channels, a channel classification algorithm is introduced which can be implemented at BTS and provide slow/fast/stationary /transition channel information to BSC via Abis message.