An Adaptive Unchoking Algorithm for Efficient Mobile P2P Streaming in Wireless LAN

  • Hun-Hoi Choi
  • Geun-Hyung Kim
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 214)


With the development of broadband wireless network technologies, the demand on video streaming technologies over wireless network has increased drastically. P2P streaming technology is adopted in the wireless environments to expropriate the demand on mobile video, because of its scalability. However, the wireless channel condition varies from time to time due to several reasons, such as node’s movement, symmetric resource allocation, etc. It is hard to provide P2P streaming services in wireless environments, because it is not easy to guarantee the upload and download bandwidth. In order to ensure overall service quality in mobile P2P streaming environments, an unchoking algorithm, that reflects the time-varying wireless channel status, is necessary. In this paper, we propose the adaptive unchoking algorithm that determines the maximum number of unchoked peer, depending on the network status and selects the peers to exchange the stream piece (chunk).


Mobile P2P streaming  Adaptive unchoking algorithm Wireless LAN 



This research was supported by Basic Science Research Program through the National Research Found (NRF) funded by Ministry of Education, Science and Technology (NRF-2012-0008026) and the MKE (The Ministry of Knowledge Economy) Korea, under ITRC(Information Technology Research Center) support program (NIPA-2012-H0301-12-2002) supervised by the NIPA (National IT Industry Promotion Agency).


  1. 1.
  2. 2.
  3. 3.
  4. 4.
    Goalbit media player:
  5. 5.
  6. 6.
    VLC media player:
  7. 7.
    Laoutaris, N., Carra, D., Michiardi, P.: Uplink allocation beyond choke/unchoke, ACM CoNEXT 2008. SPAIN, Madrid (2008)Google Scholar
  8. 8.
    Qiu, F., Bai, J., Cui, Y., Xue, Y.: Optimal rate allocation in peer-to-peer streaming over wireless networks. In: International Conference on Collaboration Technologies and System (CTS), pp. 23–27. IEEE Press, NJ (2011).Google Scholar
  9. 9.
    Ma, Z., Qiu, D.: A novel optimistic unchoking algorithm for BitTorrent. In: Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference, CCNC’09, pp. 327–330. IEEE Press, NJ (2009).Google Scholar
  10. 10.
    Huang, K., Zhang, D., Wang, L.: An activeness-based seed choking algorithm for enhancing BitTorrent’s robustness. In: Proceedings of the 4th International Conference on Advances in Grid and Pervasive Computing, GPC’09, pp. 376–387. Springer, Heidelberg (2009).Google Scholar
  11. 11.
    Tan, E., Guo, L., Chen, S., Zhang, X.: SCAP: Smart caching in wireless access points to improve P2P streaming. In: International conference on distributed computing systems, ICDCS’07, pp. 61–69. IEEE Press, NJ (2007).Google Scholar
  12. 12.
    Barrios, A., Barrios, M., De Vera, D., Rodríguez-Bocca, P., Rostagnol, C.: GoalBit: A free and open source peer-to-peer streaming network. In: Proceedings of the international conference on multimedia (ACM MULTIMEDIA 2011), open source software competition, pp. 727–730. ACM, NY (2011).Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.Department of Digital Media EngineeringDong-Eui UniversityBusanJin-GuKorea
  2. 2.Department of Visual Information EngineeringDong-Eui UniversityBusanJin-GuKorea

Personalised recommendations