A novel packet marking function for real-time interactive MPEG-4 video applications in a differentiated services network

Authors:
Shane O'Neill;Alan Marshall;Roger Woods
Affiliations:
The Institute of Electronics, Communications and Information Technology (ECIT), Queen's University of Belfast, Belfast, UK;The Institute of Electronics, Communications and Information Technology (ECIT), Queen's University of Belfast, Belfast, UK;The Institute of Electronics, Communications and Information Technology (ECIT), Queen's University of Belfast, Belfast, UK
Venue:
NETWORKING'05 Proceedings of the 4th IFIP-TC6 international conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communication Systems
Year:
2005

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Abstract

The future convergence of voice, video and data applications on the Internet requires that next generation technology provides bandwidth and delay guarantees. Current technology trends are moving towards scalable aggregate-based systems where applications are grouped together and guarantees are provided at the aggregate level only. This solution alone is not enough for interactive video applications with sub-second delay bounds. This paper introduces a novel packet marking scheme that controls the end-to-end delay of an individual flow as it traverses a network enabled to supply aggregate-granularity Quality of Service (QoS). IPv6 Hop-by-Hop extension header fields are used to track the packet delay encountered at each network node and autonomous decisions are made on the best queuing strategy to employ. The results of network simulations are presented and it is shown that when the proposed mechanism is employed the requested delay bound is met with a 20% reduction in resource reservation and no packet loss in the network.