Multicast video-on-demand service in an enterprise network with client-assisted patching

  • Authors:

  • S. M. Farhad;Md. Mostofa Akbar;Md. Humayun Kabir

  • Affiliations:

  • Department of Computer Science and Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh;Department of Computer Science and Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh;Department of Computer Science and Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh

  • Venue:
  • Multimedia Tools and Applications
  • Year:
  • 2009

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Abstract

Multicast Video-on-Demand (VoD) systems are scalable and cheap-to-operate. In such systems, a single stream is shared by a batch of common user requests. In this research, we propose multicast communication technique in an Enterprise Network where multimedia data are stored in distributed servers. We consider a novel patching scheme called Client-Assisted Patching where clients' buffer of a multicast group can be used to patch the missing portion of the clients who will request the same movie shortly. This scheme significantly reduces the server load without requiring larger client cache space than conventional patching schemes. Clients can join an existing multicast session without waiting for the next available server stream which reduces service latency. Moreover, the system is more scalable and cost effective than similar existing systems. Our simulation experiment confirms all these claims.