標題: Using known vectors to improve data dissemination in opportunistic networks
作者: Huang, Jyh-How
Chen, Ying-Yu
Tung, Li-Ping
Chen, Ling-Jyh
資訊工程學系
Department of Computer Science
關鍵字: opportunistic network;DTN routing;delay tolerant network;ad-hoc network;wireless network routing
公開日期: 1-Jan-2014
摘要: An opportunistic network is a type of challenged network in which contacts are intermittent, an end-to-end path rarely exists between the source and the destination, disconnection and reconnection are common occurrences, and link performance is highly variable or extreme. Conventional methods of data dissemination in opportunistic networks rely on a meta-message exchange scheme, called the summary vector (SV), to prevent redundant transmission of data bundles that already exist on receivers. We consider that the SV scheme is costly in terms of the data transmission overhead, which is unaffordable in opportunistic networks. Hence, we propose an alternative scheme, called the known vector (KV), to improve the efficiency of meta-message exchanges for data transmission in opportunistic networks. Using a comprehensive set of simulations with realistic network scenarios, we demonstrate that the KV scheme can be easily integrated into existing opportunistic network routing protocols (e.g., Epidemic and PRoPHET routing). Moreover, it can reduce the communication overhead significantly, thereby improving energy efficiency for data transmission in opportunistic networks.
URI: http://dx.doi.org/10.1504/IJAHUC.2014.065158
http://hdl.handle.net/11536/123995
ISSN: 1743-8225
DOI: 10.1504/IJAHUC.2014.065158
期刊: INTERNATIONAL JOURNAL OF AD HOC AND UBIQUITOUS COMPUTING
Volume: 17
起始頁: 59
結束頁: 69
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