Efficient power control via pricing in wireless data networks
Efficient power control via pricing in wireless data networks
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DOI：
10.1109/26.983324
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发表时间：
2002-02-01
影响因子：
8.3
通讯作者：
Goodman, DJ
中科院分区：
文献类型：
--
作者：
Saraydar, CU;Mandayam, NB;Goodman, DJ
无线通信系统运行中的一个主要挑战是无线资源的有效利用。无线电资源管理的一个重要组成部分是功率控制，它已在语音通信的背景下得到了广泛的研究。随着无线数据业务需求的不断增长，有必要建立针对语音以外的信息源的功率控制算法。我们在博弈论框架的分析设置中提出了无线数据的功率控制解决方案。在本文中，无线终端接收到的服务质量（QoS）被称为效用，而分布式功率控制是一种非合作功率控制游戏，其中用户最大化其效用。博弈的结果导致纳什均衡是低效率的。我们引入发射功率定价是为了获得非合作功率控制博弈的帕累托改进，即相对于没有定价的情况获得用户效用的改进。具体来说，我们考虑一个定价函数，它是发射功率的线性函数。定价功能的简单性允许分布式实施，其中价格可以由基站广播到所有终端。我们发现定价对于负载较重的系统特别有帮助。
A major challenge in the operation of wireless communications systems is the efficient use of radio resources. One important component of radio resource management is power control, which has been studied extensively in the context of voice communications. With the increasing demand for wireless data services, it is necessary to establish power control algorithms for information sources other than voice. We present a power control solution for wireless data in the analytical setting of a game theoretic framework. In this context, the quality of service (QoS) a wireless terminal receives is referred to as the utility and distributed power control is a noncooperative power control game where users maximize their utility. The outcome of the game results in a Nash equilibrium that is inefficient. We introduce pricing of transmit powers in order to obtain Pareto improvement of the noncooperative power control game, i.e., to obtain improvements in user utilities relative to the case with no pricing. Specifically, we consider a pricing function that is a linear function of the transmit power. The simplicity of the pricing function allows a distributed implementation where the price can be broadcast by the base station to all the terminals. We see that pricing is especially helpful in a heavily loaded system.