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CAC and routing for multi-service networks with blocked wide-band calls delayed, part I: exact link MDP framework
Dalarna University, School of Technology and Business Studies, Computer Engineering.
2006 (English)In: European transactions on telecommunications, ISSN 1124-318X, E-ISSN 2161-3915, Vol. 17, no 1, p. 21-36Article in journal (Refereed) Published
Abstract [en]

In this paper, we study the call admission control (CAC) and routing issue in multi-service networks. Two categories of calls are considered: a narrow-band (NB) with blocked calls cleared and a wide-band (WB) with blocked calls delayed. The objective function is formulated as reward maximisation with penalty for delay. The optimisation is subject to quality of service (QoS) constraints and, possibly, grade of service (GoS) constraints. A suboptimal solution is achieved by applying Markov decision process (MDP) theory together with a two-level approximation. First, the network is decomposed into a set of links assumed to have independent Markov and reward processes respectively. Second, the dimensions of the link Markov and reward processes are reduced by aggregation of the call classes into call categories. The CAC and routing policy is computed by the policy iteration algorithm from MDP theory. The numerical results show that the proposed CAC and routing method, based on the exact link MDP framework, is able to find an efficient trade-off between reward loss and average call set-up delay, outperforming conventional methods such as the least loaded routing (LLR).

Place, publisher, year, edition, pages
2006. Vol. 17, no 1, p. 21-36
Keywords [en]
Call admission control and routing of delayed calls (exact MDP model)
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:du-1816DOI: 10.1002/ett.1056ISI: 000235580900003OAI: oai:dalea.du.se:1816DiVA, id: diva2:519613
Available from: 2006-02-28 Created: 2006-02-28 Last updated: 2018-01-12Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • chicago-author-date
  • chicago-note-bibliography
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf