A Message Processing Method for Top-k Query for Traffic Reduction in Ad Hoc Networks
A Message Processing Method for Top-k Query for Traffic Reduction in Ad Hoc Networks
复制标题
Ad Hoc网络中减少流量的Top-k查询消息处理方法
DOI:
10.1109/mdm.2009.12
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发表时间:
2009
期刊:
影响因子:
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通讯作者:
S. Nishio
中科院分区:
文献类型:
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作者:
Ryo Hagihara;M. Shinohara;T. Hara;S. Nishio
In ad hoc networks, to acquire only necessary data items, it is effective that each mobile node retrieves data items using a top-k query, in which data items are ordered by the score of a particular attribute, and the query-issuing mobile node acquires data items with the k highest scores. In this paper, we propose a message processing method for a top-k query for reducing traffic and keeping the accuracy of the query result, i.e., guaranteeing that data items with the k highest scores in the entire network are acquired. When a mobile node transmits query and reply messages, our method can be used to reduce candidates of data items included in the top-k result to prevent unnecessary data transmissions. Moreover, if a mobile node detects a disconnection of a radio link, it searches for an alternative path to transmit the reply message to the query-issuing node. We present simulation results to evaluate the performance of our proposed method.
DOI:
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发表时间:
2005
期刊:
Proc. of Int'1 Special Workshop on Databases for Next Generation Researchers (SWOD 2005)
影响因子:
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作者:
Matsunami;H.;Terada;T.;Nishio;S.
通讯作者:
S.