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Communication networks: a new reward model for MDP state aggregation with application to CAC and routing
Högskolan Dalarna, Akademin Industri och samhälle, Datateknik.
2005 (Engelska)Ingår i: European transactions on telecommunications, ISSN 1124-318X, E-ISSN 2161-3915, Vol. 16, nr 6, s. 495-508Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

An optimal solution of the call admission control and routing problem in multi-service loss networks, in terms of average reward per time unit, is possible by modeling the network behavior as a Markov decision process (MDP). However, even after applying the standard link independence assumption, the solution of the corresponding set of link problems may involve considerable numerical computation. In this paper, we study an approximate MDP framework on the link level, where vector-valued MDP states are mapped into a set of aggregate scalar MDP states corresponding to link occupancies. In particular, we propose a new model of the expected reward for admitting a call on the network. Compared to Krishnan's and Hübner's method [11], our reward model more accurately reflects the bandwidth occupancy by different call categories. The exact and approximate link MDP frameworks are compared by simulations, and the results show that the proposed link reward model significantly improves the performance of Krishnan's and Hübner's method.

Ort, förlag, år, upplaga, sidor
2005. Vol. 16, nr 6, s. 495-508
Nyckelord [en]
CAC, MDP
Nationell ämneskategori
Data- och informationsvetenskap
Identifikatorer
URN: urn:nbn:se:du-1818DOI: 10.1002/ett.1007ISI: 000234029200001OAI: oai:dalea.du.se:1818DiVA, id: diva2:519615
Tillgänglig från: 2006-02-28 Skapad: 2006-02-28 Senast uppdaterad: 2018-01-12Bibliografiskt granskad

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Nordström, Ernst
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Totalt: 509 träffar
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