SKR 5302: Advanced Distributed Computing

3.5. Data Streaming

• Transmission of audio and video in real time.
• Required higher bandwidths and bounded latencies.
• Depends upon the availability of connections with adequate quality of service – bandwidth, latency and reliability
• Ability to established a channel from the source to the destination of a multimedia stream, with a predefined route through the network, 
• a reserved set of resources at each node through which it will travel and buffering where appropriate to smooth any irregularities in the flow of data through the channel.  

• ATM networks
  • provide high bandwidth and low latencies.
• IPv6 has features that enable each of the IP packets in a real-time stream to be identified and treat separately from other data at the network level.
• RSVP (Resource Reservation Protocol)
  • Zhang et al. 1993
  • Enables applications to negotiate the pre-allocation of bandwidth for real-time data streams. 
• RTP (Real Time Transport Protocol)
  • Schulzrinne et al. 1996
  • Application-level data transfer protocol that includes the details of the play time and other timing requirement in each packet.