无线传感网络信息高速缓冲存储仿真

Simulation of Information Cache Storage in Wireless Sensor Network

对无线传感网络信息进行缓冲存储能够方便用户利用,对提高信息的利用效率具有重要意义。针对当前无线传感网络信息高速缓冲存储方法存在的缓存速度慢,占用空间大且缓存过程中信息丢包现象严重的问题,提出一种基于最小访问代价的无线传感网络信息高速缓冲存储方法。根据无线传感网络信息高速缓冲存储的价值函数,确定缓冲存储的约束条件,构建无线传感网络信息高速缓冲存储模型,并通过引入服务供求值和服务紧迫性的概念,提高模型精度。通过对无线传感网络中信息访问的开销进行计算,并对网络中信息修改和更新过程进行描述,以访问开销最小为目标实现无线传感网络信息高速缓冲存储。实验结果表明,所提方法进行信息缓冲存储的速度较快,占用网络空间较小,且较好的保证了信息在缓冲存储过程中的完整性和准确性。

The buffer storage for information in wireless sensor network is of great significance to improve the efficiency of information utilization. This article focuses on a method of information cache storage in wireless sensor network based on the minimum access cost. According to the cost function of cache storage of information in wireless sensor network, the constraints of cache storage were determined and the wireless sensor network information cache storage model was built. Meanwhile, the concept of supply and demand value of service and the service urgency were introduced to improve the accuracy of the model. In addition, the overhead of information access in wireless sensor network was calculated and the process of modification and update of information in network was described. Based on the objective to minimize the access overhead, we achieved the cache storage of information in the wireless sensor network. Simulation results show that the proposed method has faster information cache storage. Meanwhile, it occupies less network space, which guarantees the integrity and accuracy of information during cache storage.