单个查询时SAU的参数优化  

Selection of the optimal parameters for SAU during single query

作　　者：董毅[1] 

机构地区：[1]华中科技大学电子与信息工程系,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2007年第6期38-39,共2页Journal of Huazhong University of Science and Technology(Natural Science Edition)

摘　　要：给出了在位置相关连续查询(LDCQ)中,选择区域更新策略(SAU)在单个查询时的优化参数值的理论分析结果.通过给予不同区域内固定大小的偏差限来减少移动对象的更新次数和对计算容量的占用,同时通过延迟广播来减少广播信息数量,从而优化了系统结构,减轻了系统负荷.The selection of optimal parameters for selected area update （SAU） under single query was analyzed theoretically. The update number of moving objects and the occupancy of the system computation capacity was reduced by setting fixed deviation limits in different areas. It also reduces the broadcast messages by delaying to broadcast locations of query boundaries. It further optimizes the system structure and so relieves the payload of the system.

关 键 词：位置相关连续查询 选择区域更新策略 单个查询 参数优化 

分 类 号：TN911[电子电信—通信与信息系统]