Title :
A layered QoS multicast protocol
Author :
Lim, YuJin ; Won Choe, Jong
Author_Institution :
Dept. of Comput. Sci., Sookmyung Women´´s Univ., Seoul, South Korea
Abstract :
Multimedia applications require guaranteed quality of service and multicast connection. We present, layered QoS, a new QoS-based multicast routing protocol. We adopt multiple central points (CPs) and assign QoS-levels for each CP to maximize the resource sharing. When a new receiver wishes to join a tree, the receiver considers on-tree nodes as a joining point based on their QoS capabilities, not based on the minimum distance. Maximizing the share of resource and minimizing the total tree cost are acquired by means of sharing upstream branches among the receivers with similar QoS requirements. Layered QoS improves network utilization by decreasing the total tree cost and provides a stricter guarantee of QoS. The protocol is verified by simulation, and it is shown that the protocol exhibits much better performance than the existing ones in terms of the QoS guarantee
Keywords :
Internet; multicast communication; multimedia communication; quality of service; telecommunication network routing; transport protocols; Internet; QoS guarantee; joining point; layered QoS multicast protocol; multicast connection; multicast routing protocol; multiple central points; network utilization; performance; quality of service; receiver; resource sharing; simulation; total tree cost reduction; Application software; Computer science; Costs; Delay; Encoding; Floods; Multicast protocols; Quality of service; Resource management; Routing protocols;
Conference_Titel :
Communications, 1999. ICC '99. 1999 IEEE International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-5284-X
DOI :
10.1109/ICC.1999.768024
