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An optimization model for fragmentation-based routing in delay tolerant networks



The explosive growth of mobile data traffic has raised big penetration to cellular network. Fortunately, offloading part of traffic through Delay Tolerant Network (DTN) would be a promising option to relieve load pressure. However, the existing routing strategies designed for DTNs are inappropriate in offloading scenario, where i) large data item would take on the dominance of mobile traffic, ii) centralized control can be exploited with merge between DTN and cellular network. To improve the routing performance of large data transmission, we propose a novel optimization model by creating two-tier solution space based on fragmentation, maximizing the probability that the requested data item is successfully delivered before expiration, taking limited buffer space as constraint metric. Moreover, a specific routing scheme is instantiated from our model, which is supported by uniform fragmentation and fine-grained path selection. Extensive trace-driven simulations show that our scheme is more appropriate for offloading case with outstanding performance in terms of replication overhead and acceptable routing capability.



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  1. 1

    Cisco Visual Networking Index. Global Mobile Data Traffic Forecast Update, 2013–2018. White Paper, 2014

  2. 2

    Zhuo X, Gao W, Cao G, et al. An incentive framework for cellular traffic offloading. IEEE Trans Mobile Comput, 2014, 13: 541–555

  3. 3

    Li Y, Qian M, Jin D, et al. Multiple mobile data offloading through disruption tolerant networks. IEEE Trans Mobile Comput, 2013, 13: 1579–1596

  4. 4

    Izumikawa H, Katto J. RoCNet: spatial mobile data offload with user-behavior prediction through delay tolerant networks. In: IEEE Wireless Communications & Networking Conference, Shanghai, 2013. 2196–2201

  5. 5

    Dai Y, Cao G, Gao W, et al. Contact duration aware data replication in delay tolerant networks. In: 19th IEEE International Conference on Network Protocols, Vancouver, 2011, 1416: 236–245

  6. 6

    Li Z, Liu Y, Zhu H, et al. Coff: contact duration aware cellular traffic offloading over delay tolerant networks. IEEE Trans Vehicular Tech, 2014, 64: 5257–5268

  7. 7

    Zhang X, Neglia G, Kurose J, et al. Benefits of network coding for unicast application in disruption-tolerant networks. IEEE/ACM Trans Netw, 2013, 21: 1407–1420

  8. 8

    Pitkanen M, Keränen A, Ott J. Message fragmentation in opportunistic DTNs. In: International Symposium on World of Wireless, Mobile and Multimedia Networks, Newport Beach, 2008. 1–7

  9. 9

    Ding L, Wu P, Wang H, et al. Lifetime maximization routing with network coding in wireless multihop networks. Sci China Inf Sci, 2013, 56: 022303

  10. 10

    Ma Y, Jamalipour A. A cooperative cache-based content delivery framework for intermittently connected mobile ad hoc networks. IEEE Trans Wirel Commun, 2010, 9: 366–373

  11. 11

    Masiero R, Neglia G. Distributed subgradient methods for delay tolerant networks. In: Proceedings of IEEE INFOCNM, Shanghai, 2011. 261–265

  12. 12

    Picu A, Spyropoulos T. DTN-meteo: forecasting the performance of DTN protocols under heterogeneous mobility. IEEE/ACM Trans Netw, 2014, 23: 587–602

  13. 13

    Lindgren A, Doria A, Schelén O. Probabilistic routing in intermittently connected networks. Sigmobile Mobile Comput Commun Rev, 2004, 7: 19–20

  14. 14

    Balasubramanian A, Levine B N, Venkataramani A. Replication routing in DTNs: a resource allocation approach. IEEE/ACM Trans Netw, 2010, 18: 596–609

  15. 15

    Elwhishi A, Ho P, Naik K, et al. Self-adaptive contention aware routing protocol for intermittently connected mobile networks. IEEE Trans Parall Distr Syst, 2013, 24: 1422–1435

  16. 16

    Spyropoulos T, Psounis K, Raghavendra C S. Efficient routing in intermittently connected mobile networks: the single-copy case. IEEE/ACM Trans Netw, 2008, 16: 63–76

  17. 17

    Spyropoulos T. Efficient routing in intermittently connected mobile networks: the multiple-copy case. IEEE/ACM Trans Netw, 2008, 16: 77–90

  18. 18

    Abdelkader T, Naik K, Nayak A, et al. SGBR: a routing protocol for delay tolerant networks using social grouping. IEEE Trans Parall Distr Syst, 2013, 24: 2472–2481

  19. 19

    Chen K, Shen H. Smart: utilizing distributed social map for lightweight routing in delay-tolerant networks. IEEE/ACM Trans Netw, 2014, 22: 1545–1558

  20. 20

    Gao W, Li Q, Zhao B, et al. Social-aware multicast in disruption-tolerant networks. IEEE/ACM Trans Netw, 2012, 20: 1553–1566

  21. 21

    Daly E, Haahr M. Social network analysis for information flow in disconnected delay-tolerant manets. IEEE Trans Mobile Comput, 2009, 8: 606–621

  22. 22

    Hui P, Crowcroft J, Yoneki E. BUBBLE Rap: social-based forwarding in delay-tolerant networks. IEEE Trans Mobile Comput, 2011, 10: 1576–1589

  23. 23

    Gao W, Cao G, Porta T L, et al. On exploiting transient social contact patterns for data forwarding in delay-tolerant networks. IEEE Trans Mobile Comput, 2013, 12: 151–165

  24. 24

    Karagiannis T, Boudec J L, Vojnovi´c M. Power law and exponential decay of intercontact times between mobile devices. IEEE Trans Mobile Comput, 2010, 9: 1377–1390

  25. 25

    Gao W, Cao G, Iyengar A, et al. Cooperative caching for efficient data access in disruption tolerant networks. IEEE Trans Mobile Comput, 2013, 13: 611–625

  26. 26

    Shaked M, Shanthikumar J. Stochastic Orders and Their Applications. New York: Academic Press, 1994

  27. 27

    Tie X, Venkataramani A, Balasubramanian A. R3: robust replication routing in wireless networks with diverse connectivity characteristics. In: Proceedings of the 17th Annual International Conference on Mobile Computing and Networking. New York: ACM, 2011. 181–192

  28. 28

    Chaintreau A, Hui P, Crowcroft J, et al. Impact of human mobility on opportunistic forwarding algorithms. IEEE Trans Mobile Comput, 2007, 6: 606–620

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Correspondence to Xuyan Bao.

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Bao, X., Zhang, Y., Guo, D. et al. An optimization model for fragmentation-based routing in delay tolerant networks. Sci. China Inf. Sci. 59, 1–16 (2016).

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  • multi-path routing
  • delay tolerant networks
  • optimization model
  • data offloading
  • stochastic orderings


  • 022314


  • 多径路由
  • 容断容迟网络
  • 优化模型
  • 数据分流
  • 随机序