Optimal partition of QoS requirements with discrete cost functions

Danny Raz*, Yuval Shavitt

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


The future Internet is expected to support applications with quality of service (QoS) requirements. For this end several mechanisms are suggested in the IETF to support signaling, the most promising among them is DiffServ. An important problem in this framework is how to partition the QoS requirements of an application along a selected path. The problem which is in general NP complete, was solved for continuous convex cost functions by Lorenz and Orda. This work concentrates on discrete cost functions, and presents efficient exact and approximated solutions for various conditions of the problem. We also show that the more complex problem of QoS sensitive routing with discrete cost functions is hard, but has a fully polynomial approximation scheme.

Original languageEnglish
Pages (from-to)613-622
Number of pages10
JournalProceedings - IEEE INFOCOM
StatePublished - 2000
Externally publishedYes
Event19th Annual Joint Conference of the IEEE Computer and Communications Societies - IEEE INFOCOM2000: 'Reaching the Promised Land of Communications' - Tel Aviv, Isr
Duration: 26 Mar 200030 Mar 2000


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