摘要
针对无线局域网标准并没有给出速率自适应机制的问题,提出了一种基于博弈论的速率自适应机制GRAS.GRAS在考虑信道干扰与碰撞的前提下,对MAC(medium access control)层性能进行了数学描述,给出了终端与系统有效吞吐量的理论表达式,建立了以有效吞吐量为性能指标的速率自适应博弈策略.仿真实验及与现有速率自适应机制的比较表明,提出的GRAS不仅能适应移动环境中干扰及信道的变化,而且显著地提高了系统的吞吐量与实时业务的服务质量.
To overcome the problem that wireless local area network （WLAN） does not provide link adaptation scheme, a rate adaptation scheme called GRAS is proposed based on game theory. GRAS, which takes channel interference and collision lose into consideration, depicts MAC （medium access control） layer and deduces the effective throughput formulas of stations and system. GRAS also provides rate adaptive game strategy. Simulation results and comparisons with existed rate adaption schemes show that the pmgw, ed GRAS scheme not only adapts to interference and channel variation, hut also improves system throughput and quality of service （QoS） of real - time traffic greatly.
出处
《微电子学与计算机》
CSCD
北大核心
2009年第9期16-18,共3页
Microelectronics & Computer
基金
浙江省自然科学基金项目(Y116325)
关键词
无线局域网
速率自适应
博弈论
wireless local area networks
rate adaptation
game theory
