VOD multicast using CIWP and p2p partial stream transfer

  • Authors:

  • Kwang-Sik Shin;Wan-Oh Yoon;Jin-Ha Jung;Sang-Bang Choi

  • Affiliations:

  • Dept. of Electronic Engineering, Inha University, Incheon, Korea;Dept. of Electronic Engineering, Inha University, Incheon, Korea;Dept. of Electronic Engineering, Inha University, Incheon, Korea;Dept. of Electronic Engineering, Inha University, Incheon, Korea

  • Venue:
  • MMM'07 Proceedings of the 13th International conference on Multimedia Modeling - Volume Part II
  • Year:
  • 2007

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Abstract

Providing VOD in the internet is one of the challenging technologies. When a new client joins an ongoing multicast session for VOD service, the servers using CIWP scheme for the VOD multicast creates an additional unicast channel to serve the partial stream. And, the unicast channel consumes a certain amount of the I/O bandwidth of the server, as well as some of the network resources between the server and clients. This problem can be solved by using p2p local transfer between the clients to deliver the partial stream. In this paper, we propose a new VOD multicast scheme that is based on the CIWP scheme and the p2p transfer of the partial multimedia stream. In the p2p approach, unexpected dropout of a client, due to the failure of the connection or departure from the current session, can disrupt the partial stream transfer for the other clients. Thus, we also propose a procedure to recover from this kind of unexpected dropout. Our simulation results show that the proposed scheme reduces the network bandwidth on the server side dramatically, reduces the average waiting time of the client, and improves the service quality.