Uplink Load Estimation in WCDMA
2002 (English)Report (Other academic)
All cellular radio systems depend on well performing radio resource management algorithms to efficiently utilize available resources. These algorithms make their decisions based on some sort of resource quantity. In the uplink of a WCDMA system, the total received power at the base stations is a natural choice of such a quantity. Unfortunately this quantity cannot be measured with enough accuracy to be used by resource management algorithms. One way of getting around this problem is to estimate a closely related quantity, namely the uplink noise rise. In this paper, we propose and evaluate four different methods to estimate the noise rise. The estimates are insensitive to users bit rate and use data readily available in the system. The best performing method estimates, on average, the uplink noise rise with an error of less than 1 dB for practical load scenarios.
Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2002. , 7 p.
LiTH-ISY-R, ISSN 1400-3902 ; 2458
WCDMA, Resource management, Uplink load
National CategoryControl Engineering
IdentifiersURN: urn:nbn:se:liu:diva-55889ISRN: LiTH-ISY-R-2458OAI: oai:DiVA.org:liu-55889DiVA: diva2:316643