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Utility-Based Power Control in Cellular Wireless Systems (2001)
| Venue: | In Proc. of IEEE INFOCOM’01 |
| Citations: | 61 - 2 self |
BibTeX
@INPROCEEDINGS{Xiao01utility-basedpower,
author = {Mingbo Xiao and Ness B. Shroff and Edwin K. P. Chong},
title = {Utility-Based Power Control in Cellular Wireless Systems},
booktitle = {In Proc. of IEEE INFOCOM’01},
year = {2001},
pages = {412--421}
}
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Abstract
Distributed power control algorithms for systems with hard SIR constraints may diverge when infeasibility arises. In this paper, we present a power control framework called utility-based power control (UBPC) by reformulating the problem using a softened SIR requirement (utility) and adding a penalty on power consumption (cost). Under this framework, the goal is to maximize the net utility, defined as utility minus cost. Although UBPC is still non-cooperative and distributed in nature, some degree of cooperation emerges: a user will automatically decrease its target SIR (and may even turn off transmission) when it senses that traffic congestion is building up. This framework enables us to improve system convergence and to satisfy heterogeneous service requirements (such as delay and bit error rate) for integrated networks with both voice users and data users. Fairness, adaptiveness, and a high degree of flexibility can be achieved by properly tuning parameters in UBPC. Keywords--- Signal-to-interference ratio (SIR), wireless, cellular system, power control, utility function, distributed algorithm. I.
Keyphrases
utility-based power control cellular wireless system utility function power control system convergence softened sir requirement high degree power control framework heterogeneous service requirement hard sir constraint keywords signal-to-interference ratio data user bit error rate power control algorithm utility minus cost cellular system target sir voice user power consumption cooperation emerges net utility traffic congestion
