Proceedings ArticleDOI
Performance of uplink packet services in WCDMA
K. Dimou,Claudio Rosa,Troels B. Sorensen,Jeroen Wigard,Preben Mogensen +4 more
- Vol. 3, pp 2071-2075
TLDR
The results concentrate on the uplink noise rise (NR) behavior for different settings of PS related timers and show that a reduction of some of these timers to allow faster scheduling can increase the network capacity, but this potential capacity gain is achievable only for bursty and high user equipment (UE) source data rate.Abstract:
In this paper, we study the operation of release'99 packet scheduler of the UMTS system. We focus on the uplink direction of data transmission. The aim is to investigate the performance of the packet scheduler data scheduling on dedicated transport channels. We emphasize in particular a power based packet scheduler (PS) with fair resource sharing. The PS performance has been evaluated in a time-dynamic network simulator with packet data users characterized by a bursty source traffic model. We shortly describe the source traffic model and the network simulator. The results concentrate on the uplink noise rise (NR) behavior for different settings of PS related timers and show that a reduction of some of these timers to allow faster scheduling can increase the network capacity. However, the results also demonstrate that this potential capacity gain is achievable only for bursty and high user equipment (UE) source data rate.read more
Citations
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Patent
Neighboring cell interference management in SC-FDMA
TL;DR: In this paper, the authors proposed a method for reconfiguring zones of a cell sector in a cellular mobile communication system employing a frequency division multiplex access scheme comprising the steps of separating the cell sector into zones, allocating radio resources to users located in the zones, and altering the predetermined zone size upon a change of a radio resource management parameter.
Journal ArticleDOI
An Efficient Resource Allocation Strategy for Future Wireless Cellular Systems
TL;DR: This paper proposes a concept called load matrix (LM) which facilitates joint management of interference within and between cells for allocation of radio resources and shows significant improvement in the resource utilization and overall network performance.
Proceedings ArticleDOI
Combined time and code division scheduling for enhanced uplink packet access in WCDMA
TL;DR: While the MTPE scheduler maximises cell throughput at the cost of at low degree of fairness between users, the CSAFT algorithm is shown to offer an appealing trade-off between users' fairness and throughput maximisation.
Dissertation
Capacity Improvement Using Adaptive Sectorisation in WCDMA Cellular Systems With Non-Uniform and Packet Mode Traffic
TL;DR: In this paper, the problem of hot spots in a bid to improve system capacity at acceptable quality of service levels is dealt with and the application of adaptive sectorisation to improve capacity in such systems when confronted with hot spots is also investigated.
Proceedings ArticleDOI
Performance of fast Node B scheduling and L1 HARQ schemes in WCDMA uplink packet access
Claudio Rosa,J. Outes,K. Dimou,Troels B. Sorensen,Jeroen Wigard,Frank Frederiksen,Preben Mogensen +6 more
TL;DR: The performance of WCDMA uplink systems deploying Node B based scheduling and fast hybrid ARQ (HARQ) retransmission protocols is studied and the potential capacity gain and combined gain obtained are estimated.
References
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BookDOI
WCDMA for UMTS: Radio Access for Third Generation Mobile Communications
Harri Holma,Antti Toskala +1 more
TL;DR: In this article, the authors provide a complete picture of the Wideband CDMA (Code Division Multiple Access) air interface of the 3rd generation cellular systems - UMTS (Universal Mobile Telecommunications Systems).
Proceedings ArticleDOI
Uplink admission control and soft capacity with MUD in CDMA
Harri Holma,J. Laakso +1 more
TL;DR: In this paper, the authors presented an analysis of the WCDMA uplink capacity with admission control and multiuser detection (MUD), and showed that up to 50% more users with 144 kbps real-time data can be supported than with a noninterference based admission control approach.
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