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%INC5%Usage of Preempt/Resume techniques for Multimedia transport between routers

IP.com Disclosure Number: IPCOM000014883D
Original Publication Date: 1999-Nov-01
Included in the Prior Art Database: 2003-Jun-20

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Didier Giroir


Usage of Preempt/Resume techniques for Multimedia transport within Router based networks This paper relates to router based telecommunication networks and, more particularly, proposes the use of a mechanism to improve the quality of service provided by such router based networks when different flows of information, with different delay constraints are considered. This paper suggests to use between adjacent routers within the network that are interconnected via low speed links (i.e. Less than T3/E3 speeds), the improved preempt/resume protocol as described in “Method and Apparatus for Transmission of High Priority Traffic on High-Level Data Link Control-Like or Frame Relay Networks”. This paper describing the improved preempt/resume protocol has been published in IBM’s Topology Disclosure Bulletin v40 n1 p 1-4 in January 1997. For router based communication networks, there is a widely accepted requirement and a large potential market for the transport of some form of real time information, alongside with the regular data packets. Transporting variable length data packets was the original scope of router protocols, as opposed to Asynchronous Transfer Mode technology which has addressed from the very beginning the transport of multiple categories of data, including real time data. Transporting real time data traffic within router based networks allows for example, to use the existing infrastructure to carry not only computer related information but also the packets associated with (usually) low or medium quality voice circuits. Such real time packets would otherwise have to be transported over a totally different