无线传感器网络中基于数量可靠的事件协议已经被提出应用于可靠事件监测系统.这种方法通过提高源节点到节点数据发送成功的数量达到事件可靠传输的目的.但是,由于在有限的数据传输路径上数据拥塞造成数据冲突和缓冲溢出频繁的现象,数据包丢失后,基于数量可靠的事件协议就难以达到期望的数据发送量.基于质量可靠的事件协议可以较好的解决这一问题.从传输数据的性质出发,根据监测环境的影响将不同的传感器节点采集的数据划分为相应的贡献度,贡献度的大小决定传感器节点转发数据的情况.同时,提出基于贡献度的有效的缓存管理策略平衡了各传感器节点拥塞量.仿真结果说明了这种方法的优越性.%Quantity-based event reliability protocols have been proposed to reliable event detection system. This method can obtain event reliability transmission by enhancing the quantity from source node to sink node. However, the quantity-based event reliability protocols can hardly achieve the expectance number due to data packets loss, since many data collisions and buffer drop frequently happen as data congestions of limited data transmission paths. Quality-based event reliability protocol can solve this problem. According to environmental conditions devided the packet data that sensor node collected to different contribution degree which determing data forward consider this data property. It still balances traffics among sensor node and mitigates congestion based on contribution degree by effective buffer management. Simulation results show superiority of this manner.
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