作　　者： ; ; ;

机构地区： 佛山职业技术学院

出　　处： 《计算机应用与软件》 2013年第12期291-294,298,共5页

摘　　要： 太阳能供电的传感器节点在电池充满电时会产生过剩的能量,如不加以利用会被浪费。提出一种基于太阳能约束的可靠数据传输方法 RDDMSC(Reliable Data Delivery Method based on Solar Constraint),利用过剩的能量自适应地调整通信中纠错码的冗余度,在网络寿命保持不变的情况下提高传输的可靠性。将问题描述为在有能量约束时最大限度地保证端到端数据包的传输率。证明了在链路质量不差的情况下目标函数一定是凹函数,进而采用凸优化来解决可靠传输问题。实验结果表明,RDDMSC能够有效地使用过剩能量来能够提高数据传输率。 When the battery is over-charged, the solar-powered sensor nodes tend to generate extra energy. The energy is wasted when it is not utilized. The paper proposes a reliable data delivery method based on solar constraint （ RDDMSC）, which, by using the surplus energy, adaptively adjusts the redundancy of erasure codes during communication. It enhances the reliability of delivery as the network lifetime is kept untouched. First of all, the problem is described as ensuring at utmost the transmission rate of end-to-end data packages when there is energy constraints. It is proven that when link quality is not bad, the objective function is certainly concave. Hence convex optimization is used to solve the reliable delivery problem. Experimental results demonstrate that RDDMSC can effectively take advantage of surplus energy to improve data delivery rate.

关 键 词： 太阳能供电传感器网络 可靠数据传输 纠错码 凸优化

领　　域： [自动化与计算机技术] [自动化与计算机技术]