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Performance of link adaptation in GPRS networks

Dunlop, J. and Gozalvez, J. (2003) Performance of link adaptation in GPRS networks. Electronics Letters, 39 (1). pp. 139-140. ISSN 0013-5194

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Abstract

In GPRS four coding schemes have been defined with different degrees of data protection. The selection of a fixed one for a certain packet transmission would lead to a throughput loss if the channel quality conditions vary during the connection, therefore, a link adaptation algorithm based on a block error rate (BLER) estimation is proposed and analyzed. The BLER is calculated from the acknowledgement messages reported by the receiver; so the acknowledgement frequency impacts the link adaptation, and therefore, is studied in the present article. The resulting link adaptation algorithm has been analyzed with a dynamic network simulator, under different frequency reuse patterns and frequency hopping strategies. Furthermore, the mean user throughput for the fixed coding schemes and for link adaptation has been estimated from GSM network reported measurements, and a network operator planning tool.

Item type: Article
ID code: 7033
Keywords: access protocols, cellular radio, data communication, digital simulation, error statistics, frequency allocation, packet radio networks, telecommunication network planning, Electrical engineering. Electronics Nuclear engineering, Electrical and Electronic Engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 16 Oct 2008
    Last modified: 04 Sep 2014 15:21
    URI: http://strathprints.strath.ac.uk/id/eprint/7033

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