政大機構典藏-National Chengchi University Institutional Repository(NCCUR):Item 140.119/69581

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政大機構典藏 > 資訊學院 > 資訊科學系 > 期刊論文 > Item 140.119/69581

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题名:	A location-based content search approach in hybrid Delay Tolerant Networks
作者:	蔡子傑 Tsai,Tzu-Chieh Lee,Hsin-Ti
贡献者:	資科系
日期:	2013
上传时间:	2014-09-02 17:19:28 (UTC+8)
摘要:	In Delay Tolerant Networks (DTNs), the offline users can, through the encountering nodes, use the specific peer-to-peer message routing approach to deliver messages to the destination. Thus, it solves the problem that users have the demands to deliver messages while they are temporarily not able to connect to Internet. Therefore, by the characteristics of DTNs, people who are not online can still query some location based information, with the help of users using the same service in the nearby area. In this paper, we proposed a Location-based content search approach. Based on the concept of three-tier area and hybrid node types, we presented four strategies to solve the query problem, namely, Data Replication, Query Replication, Data Reply, and Data synchronization strategies. Especially we proposed a Message Queue Selection algorithm for message transferring. The priority concept is set associated with every message such that the most “important” one could be sent first. In this way, it can increase the query success ratio and reduce the query delay time. Finally, we evaluated our approach, and compared with other routing schemes. The simulation results showed that our proposed approach had better query efficiency and shorter delay.
關聯:	Journalism and Mass Communication,12(3),28-33
数据类型:	article
DOI 連結:	http://dx.doi.org/10.1109/ChinaCom.2013.6694560
DOI:	10.1109/ChinaCom.2013.6694560
显示于类别:	[資訊科學系] 期刊論文

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