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Uplink Admission Control in WCDMA Based on Relative Load Estimates
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
Ericsson Radio Systems AB, Sweden.
Ericsson Radio Systems AB, Sweden.
2002 (English)In: Proceedings of the 2002 IEEE International Conference on Communications, 2002, 3091-3095 vol.5 p.Conference paper, Published paper (Refereed)
Abstract [en]

When operating a cellular radio system at nearly full capacity, admitting yet another user may jeopardize the stability of the system as well as the performance of the individual users. Therefore, proper admission control is crucial. Prior art includes algorithms which are limiting the number of users or the uplink interference per cell. Both are known to yield roughly the same performance, but the former is difficult to configure, and the latter is based on a quantity, which is hard to measure accurately. The core idea in this work is to predict the relative load of the system directly, given that a user is admitted. Then, the user will be admitted if the predicted load in the specific cell, and in its neighbors, is below some threshold. The proposed uplink relative load estimate is focused on WCDMA. It utilizes measurements readily available in that system, either periodically scheduled or from handover events. Multi-services are naturally handled, and availability of high data-rate services are automatically limited with respect to coverage, compared to services of lower data-rate. Simulations indicate that the admission control operates satisfactory in different traffic situations with a universal parameter setting. Furthermore, the reporting overhead with periodical measurements can be avoided, since handover event-driven measurements yield roughly the same performance.

Place, publisher, year, edition, pages
2002. 3091-3095 vol.5 p.
Keyword [en]
WCDMA, Uplink load, Estimation, Handover measurements, Noise rise
National Category
Engineering and Technology Control Engineering
Identifiers
URN: urn:nbn:se:liu:diva-90845DOI: 10.1109/ICC.2002.997407ISBN: 0-7803-7400-2 (print)OAI: oai:DiVA.org:liu-90845DiVA: diva2:615431
Conference
2002 IEEE International Conference on Communications, New York City, NY, USA, April-May, 2002
Available from: 2013-04-10 Created: 2013-04-07 Last updated: 2013-04-10

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Gunnarsson, FredrikGeijer Lundin, Erik

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
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  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
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