【摘要】 针对基于地理哈希表(GHT,Geographic Hash Table)的传感器网络数据中心存储(DCS,Data Centric Stora-ge)机制的热点问题,提出了能量有效的热点感知数据存储策略SASS(hotSpot-Aware data Storage Strategy),对GHT的路由策略进行改进,以减少边界模式引起的能量消耗,并利用邻居节点动态地扩展存储空间。仿真结果表明,与现有存储策略相比,SASS能有效减少因存储资源限制引起的数据丢失,并减轻热点区域节点的通信负载。更多还原

【Abstract】 Considering hotspot problem in GHT(Geographic Hash Table)-based Data-centric storage(DCS) sensor networks,this paper proposed a hotspot-aware data storage scheme(SASS),which improves the routing scheme of GHT to reduce the energy consumption caused by perimeter walk,and exploits neighboring nodes to extend storage space dynamically.Simulation results demonstrate that compared with exiting schemes,SASS can effectively alleviate data lost caused by the limitation of storage space and reduce communication load of nodes in hotspot areas.更多还原