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Distributed cross-layer coordination of congestion control and resource allocation in S-TDMA wireless networks
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.
KTH, School of Electrical Engineering (EES), Automatic Control.
2008 (English)In: Wireless networks, ISSN 1022-0038, E-ISSN 1572-8196, Vol. 14, no 6, 949-965 p.Article in journal (Refereed) Published
Abstract [en]

We consider the problem of joint congestion control and resource allocation in spatial-TDMA wireless networks. The design problem is posed as a utility maximization problem subject to link rate constraints which involve both transmission scheduling and power allocation. Starting from the performance limitations of a centralized optimization based on global network information, we proceed systematically in our development of two distributed and transparent protocols that rely on local information only. In the process, we introduce a novel decomposition method for convex optimization, establish its convergence for the utility maximization problem, and demonstrate how it suggests a distributed solution based on TCP/AQM and incremental updates of the transmission schedule. We develop a two-step procedure for finding the schedule updates and suggest two schemes for distributed link scheduling and power control under realistic interference models. Although the final protocols are suboptimal, we isolate and quantify the performance losses incurred by each simplification and demonstrate strong performance in examples.

Place, publisher, year, edition, pages
2008. Vol. 14, no 6, 949-965 p.
Keyword [en]
Wireless networks, Spatial-TDMA, Decomposition methods, Distributed, protocols, Power control, Scheduling, packet radio networks, power-control, communication-networks, algorithms, convergence
Identifiers
URN: urn:nbn:se:kth:diva-17905DOI: 10.1007/s11276-007-0046-5ISI: 000260250700014Scopus ID: 2-s2.0-54149095209OAI: oai:DiVA.org:kth-17905DiVA: diva2:335950
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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