Rate-Adaptive Real-Time Multicast TV Conference System with Locally Adaptive Packet Flow Control

Yoshihiro ITO  Shigeyuki SAKAZAWA  Masami ISHIKURA  Tohru ASAMI  

IEICE TRANSACTIONS on Information and Systems   Vol.E82-D   No.4   pp.815-821
Publication Date: 1999/04/25
Online ISSN: 
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (Special Issue on Internet Technology and Its Applications)
multicast,  real-time,  RTP,  

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As TCP/IP networks develop, various type of applications or services are appearing. Especially, many people want to use real time multicast applications over TCP/IP networks like a TV conference system. Most of the current TCP/IP networks, however, still do not support QoS guarantees using RSVP, so that they provide only a best-effort service. Therefore, such real time applications must control data transmitting rate by the network or receiver's condition. However, it is difficult to control data rate over a multicast session, since every receiver on a multicast network does not necessarily have the same environment. To solve this problem, the authors proposed a locally adaptive control intermediate system. This paper describes a rate-adaptive real-time multicast system with locally adaptive packet flow control.