NDLI: An effective dynamic slot allocation strategy based on zone division in WCDMA/TDD systems

Content Provider	IEEE Xplore Digital Library
Author	Nazzarri, F. Ormondroyd, R.F.
Copyright Year	2002
Description	Author affiliation: R. Mil. Coll. of Sci., Cranfield Univ., Shrivenham, UK (Nazzarri, F.; Ormondroyd, R.F.)
Abstract	WCDMA/TDD systems deal efficiently with asymmetric traffic because the number of uplink and downlink slots in the TDD frame can be dynamically adjusted to match the traffic asymmetry in a cell. In a multi-cellular environment however, the traffic asymmetry between TDD cells may be significantly different and the application of slot allocation strategies on a per cell basis can result in high levels of inter-cell interference during 'crossed-slots'. In this paper we propose an adaptive dynamic slot allocation strategy (DSA) that resolves crossed-slot interference in multi-cell environments by dividing the coverage area of each cell into a number of distinct service zones. This is coupled with a co-ordination algorithm that ensures that system resources are allocated to users according to the level of mutual interference between the service zones. System capacity calculations validate our DSA strategy and demonstrate that it outperforms both conventional 'same slot' allocation schemes and other previously proposed DSA schemes in heterogeneous traffic environments.
Starting Page	646
Ending Page	650
File Size	350629
Page Count	5
File Format	PDF
ISBN	0780374673
ISSN	10903038
DOI	10.1109/VETECF.2002.1040678
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-09-24
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiaccess communication Interference Downlink Telecommunication traffic Wireless networks Resource management Land mobile radio cellular systems Mobile communication Base stations Intelligent networks
Content Type	Text
Resource Type	Article

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