Data Aggregation and Routing Guidance with QoS Guarantee in VANETs
Data Aggregation and Routing Guidance with QoS Guarantee in VANETs
复制标题
VANET 中具有 QoS 保证的数据聚合和路由指导
DOI:
10.1155/2014/262437
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发表时间:
2014-07
影响因子:
2.3
通讯作者:
姜守旭
中科院分区:
文献类型:
--
作者:
冯诚;李治军;姜守旭
Data aggregation is a useful technology that can decrease the communication bandwidth cost in the process of data gathering in VANETs. However, data aggregation may lose some data accuracy. Current data aggregation schemes in VANETs only consider saving bandwidth cost while ignoring the application requirement, which may result in the inaccuracy of aggregated data for dynamic routing application. Therefore, we propose a framework in which application demands are considered in the process of data aggregation to ensure the accuracy of aggregated data for dynamic routing application. The framework consists of three parts: extracting QoI constraints of aggregated data, distributing the QoI-based data gathering queries, routing and aggregating data with QoI constraints. First, we propose average allocation method to handle the demand of single user and utilize convex optimization to handle multiuser demands. Then, we distribute the QUERY message with QoI constraints in the interested area. Last, we propose QoI-DG protocol to do two kinds of data aggregation operation, namely, AVERAGE aggregation and HISTOGRAM aggregation. Simulation experiments show that our proposed method can increase about 20 percent in the collected data rate and save 15 percent communication bandwidth cost in the process of data gathering in VANETs.
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影响因子:
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DOI:
10.1109/iwcmc.2013.6583705
发表时间:
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2013 9th International Wireless Communications and Mobile Computing Conference (IWCMC)
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DOI:
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发表时间:
2008-02
期刊:
2008 5th IEEE Consumer Communications and Networking Conference
影响因子:
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DOI:
10.1109/lcn.2011.6115554
发表时间:
2011-10
期刊:
2011 IEEE 36th Conference on Local Computer Networks
影响因子:
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通讯作者:
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