Coverage Planning for Optimizing HSDPA Performance and Controlling R99 Soft Handover
2012 (English)In: Telecommunications Systems, ISSN 1018-4864, E-ISSN 1572-9451, Vol. 51, no 1, 53-64 p.Article in journal (Refereed) Published
Coverage planning is an important engineering task in deploying UMTSnetworks implementing both high speed downlink packet access (HSDPA)and Release 99 (R99) services. Coverage planning amounts todetermining the cell coverage pattern by means of setting the commonpilot channel (CPICH) power of the cells. A conventional strategy isto uniformly allocate a proportion of the total power to CPICH. Inthis paper, we develop mathematical modeling and optimizationapproaches to bring the benefit of power saving enabled by optimizingnon-uniform CPICH to enhance HSDPA performance, while preserving adesired degree of soft handover (SHO) for R99. The studyfocuses on HSDPA performance at cell edges, where data throughput istypically low. An integer linear programming model is developed forthe resulting optimization problem. The model admits optimal ornear-optimal planning solutions for relatively small networks.Solution algorithms based on local search and repeated localsearch are developed. These algorithms are able to perform theoptimization for large-scale networks time-efficiently. Experimentalresults for both synthesized networks as well as instances originatingfrom real planning scenarios demonstrate the benefit of ouroptimization approach.
Place, publisher, year, edition, pages
Springer , 2012. Vol. 51, no 1, 53-64 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-62761DOI: 10.1007/s11235-010-9414-zISI: 000311517300006OAI: oai:DiVA.org:liu-62761DiVA: diva2:374213
funding agencies|CENIIT||Linkoping Institute of Technology, Sweden||Swedish Research Council (Vetenskapsradet)||ELLIIT network||2010-12-032010-12-032013-03-04