移动P2P网络中能量有效连续查询研究  

Research on energy efficient continuous queries in mobile peer-to-peer environments

作　　者：雷向东[1] 李选彪 彭剑[1] 袁晓莉[1] 

机构地区：[1]中南大学信息科学与工程学院,长沙410083

出　　处：《信息技术》2013年第12期11-14,17,共5页Information Technology

基　　金：国家自然科学基金项目(61073037)

摘　　要：在移动P2P网络中一个基本应用问题是访问分布式空间数据库中的数据对象,同时节省电量。文中提出了在移动P2P网络中能量有效连续查询处理(Energy Efficient Continuous Query Processing,EECQP)算法,包括范围查询和k个最近邻居节点查询(k-nearest-neighbor queries,k-NN)。EECQP算法能够提供移动用户找到一个有质量保证的连续查询结果。EECQP算法主要的想法是允许用户与节点合作,持续保存查询结果,而不是总是从头开始处理查询,从而减少通信开销。实验结果表明所提出的EECQP算法对于范围查询和k个最近邻居节点查询在通信开销和QoS保证是能量有效和可扩展的。In mobile peer-to-peer （P2P） networks a fundamental problem is to access efficiently data items from distributed spatial databases while preserving batter）, power. This paper proposes an energy efficient continuous query processing （EECQP） algorithm （range and k-nearest-neighbor queries） in mobile peer-to-peer （P2P） environments. The EECQP algorithm can provide continuous query results that satisfy the user＇ s quality of services （QoS） requirements to mobile users. The main idea of EECQP algorithm is that allows the user to collaborate with peers to continuously maintain a query answer, instead of always processing the query from scratch, in order to reduce communication overhead. The experiment results show that the proposed EECQP algorithm is energy efficient and scalable in terms of communication overhead, and the QoS requirements on both range queries and k-nearest-neighbor queries.

关 键 词：移动P2P网络 连续查询处理 无线数据广播 能量有效 

分 类 号：TN929.5[电子电信—通信与信息系统]