基于父/子微微网的接入控制策略及性能分析

Access Control Strategy and Performance Analysis based on Parent/Child Piconets

父/子微微网由于其特有的技术优势和广阔的应用前景而广受关注。文中介绍IEEE 802.15.3标准MAC协议的超帧结构和父/子微微网网络结构,提出三种新型的接入控制策略,有效解决超帧长度利用不充分、设备接入不公平、多业务QoS性能不理想等不足之处。仿真和分析结果表明,文中所提的接入控制策略可以充分利用超帧长度,有效提升网络的平均QoS满意度,保证微微网协调器、实时业务流比普通设备、非实时业务流具有更高的满意度。

Parent/child piconets, owing to its peculiar technical superiority and application prospects, attract much attention. This paper describes the superframe structure based on MAC protocol of IEEE 802.15.3 standards and the network structures of parent/child piconets, then proposes three novel access control strate- gies, thus effectively solving the deficiencies such as inefficient use of superframe length, unfair admission to devices, and inadequate QoS guarantee of multiple traffics. Simulations and analysis results indicate that the proposed access control strategy could take full advantage of superframe size, effectively improve the average QoS satisfaction factor, and guarantee that the piconet coordinators and reaL-time business flow could enjoy higher satisfaction factor than general devices and non-real-time business flow.