摘要
针对ZigBee无线多媒体传感器网络(WMSNs)资源受限的特点,提出一种改进的基于蚁群优化的QoS路由算法AZ-WMSN-QR。其核心思想是通过加权法将通信时延、时延抖动及能量均衡性等QoS指标组合成一个主目标,进而评估链路的QoS主目标值,寻找符合QoS需求的目标值最大的路径,实现服务质量最优。仿真显示,AZ-WMSN-QR算法在多约束QoS路由问题上能实现网络资源优化组合,与基本蚁群路由算法相比,不仅能够减少网络总能耗,还能有效延长网络寿命,更适用于基于ZigBee的WMSNs。
As a kind of wireless multimedia sensor networks（WMSNs）, ZigBee has the requirement of quality of service（QoS）. Here an improved QoS routing algorithm based on ant colony optimization is proposed. This is a new approach to extend the lifetime. How to find the route of optimal or comparatively optimal QoS with the proposed algorithm is presented. Last but not least, simulation of the routing algorithm realizes the idea. And by comparison with the classical algorithm, we can find that the improved algorithm witch can not only fill usual QoS requirements but also efficiently prolong the network lifetime is more suitable for ZigBee.
出处
《电子技术应用》
北大核心
2013年第6期114-117,共4页
Application of Electronic Technique
基金
国家科技重大专项基金资助项目(2011ZX03004-006)
