doi: 10.18178/ijfcc.2015.4.5.406
A Community-Based Data Dissemination Scheme in Opportunistic Networks
Chun-Chih Lo
1
,
I-Hsun Chuang
1
,
Pey-Wen Lai
1
,
Bing-Jie Guo
1
,
Yau-Hwang Kuo
1,2
- 1 Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan.
- 2 Department of Computer Science, National Chengchi University, Taipei, Taiwan.
Abstract
In opportunistic networks, data are often deliveredby dissemination-based routing approaches using thestore-carry-and-forward concept. However, the heavyoverheads incurred by these approaches lead to inefficient datadelivery. Generally, users in an area usually demand similardata, called “locality of demand”, and this area is referred to asa community. Based on such property, this paper presents acommunity-based data dissemination (ComD) scheme toimprove the data delivery efficiency in the opportunisticnetwork. By delivering data to appropriate communities, userscan obtain what they are actually interested in. Moreover, theComD also uses the cooperative caching technique to reducetransmission redundancy. To optimize system utility, theproposed delivery model is formulated as a multiple knapsackproblem to determine which data should be carried, and agreedy-based method is adopted to reduce the computationalcomplexity. Simulation results show ComD can significantlyimproves the system utility and delivery rate under varioussituations.
Keywords
- Opportunistic networks
- community-baseddata dissemination
- cooperative cache
How to Cite
Chun-Chih Lo, I-Hsun Chuang, Pey-Wen Lai, Bing-Jie Guo, and Yau-Hwang Kuo, "A Community-Based Data Dissemination Scheme in Opportunistic Networks," International Journal of Future Computer and Communication, vol. 4, no. 5, pp. 305-310, 2015. https://doi.org/ 10.18178/ijfcc.2015.4.5.406
Copyright & License
Copyright © 2015 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).