摘要
本文从提高系统工作效率的角度出发,提出了一种基于无争用集中控制的忙队列周期查询(BQPO)控制协议.该协议为时延QoS要求较高的无线终端提供了稳定可靠的保障,通过系统建模分析获得了系统的信息分组平均等待时间的解析结果.仿真实验结果表明理论分析和仿真实验的一致性与合理性,与PCF控制方式相比,BQPO协议具有更好的稳定性和时延QoS保障.
To provide a more efficient wireless MAC protocol, Busy Queue Polled Only （BQPO） protocol, which is based on cychc polling scheme,is presented. It can provide delay QoS and stability for the time-bounded services. The mathematical model of BQPO system and the mean value of message waiting time are explicidy obtained. The perfomance of BQPO is simulated and compared with PCF scheme. The results show that the simulation is in concordance with the theoretical analysis. The BQPO scheme can provide higher stability and better delay QoS than PCF scheme.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2005年第7期1168-1172,共5页
Acta Electronica Sinica
基金
国家自然科学基金(No.60362001)
关键词
无线网络
MAC
QOS
周期查询
wireless network
medium access control （MAC）
QoS
cyclic polling
