Conference Paper

Scheduling and Resource Allocation of Enhanced Uplink for 3GPP W-CDMA

Motorola Inc. Networks Bus.
DOI: 10.1109/PIMRC.2005.1651772 Conference: Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. IEEE 16th International Symposium on, Volume: 3
Source: IEEE Xplore

ABSTRACT Enhanced uplink technology is being standardized in release-6 of 3GPP W-CDMA specifications with the completion date of 2nd quarter of 2005. Advanced features being introduced include adaptive modulation and coding, hybrid ARQ, fast rate control or scheduling by the base station, higher peak rates (5.76 Mbps) and support of 2 ms TTI. These techniques reduce overall delay and increase throughput significantly compared to earlier releases of 3GPP W-CDMA (release-99/4/5). As a result, enhanced uplink significantly improves the user mobile experience and enable new services and applications. In this paper, the scheduling and resource allocation aspects of enhanced uplink are discussed with accompanying analysis and system simulation results. These results show that enhanced uplink improves sector and user throughput by approximately 50-80% compared to earlier 3GPP W-CDMA releases

0 Bookmarks
 · 
59 Views
  • [Show abstract] [Hide abstract]
    ABSTRACT: WCDMA systems equipped with enhanced uplink (EUL) are currently being rolled out. When using EUL, rapid scheduling in the base stations makes it possible to operate at an interference power level above a reasonable admission limit for dedicated data channels. Thus, an admission control hosted in a central node that considers the total interference power may reject users due best effort traffic on EUL. As a remedy to this, a new measurement representing the interference power from scheduled transmission has been incorporated in the 3GPP specification. This contribution shows that it is possible to recover most of the accessibility, i.e., users' probability of accessing the system, lost when introducing EUL if the new measurement is used appropriately. To this end, two admission control algorithms are proposed and compared in system simulations. The algorithms consider the total interference power and the interference power due to non-scheduled traffic, respectively.
    Vehicular Technology Conference, 2007. VTC-2007 Fall. 2007 IEEE 66th; 11/2007
  • [Show abstract] [Hide abstract]
    ABSTRACT: In this paper, we investigate the potential benefit of successive interference cancellation (SIC) in high speed uplink packet access (HSUPA). We explore the possibility of improving the performance of HSUPA by introducing the SIC and we also bring forward a novel scheduling method named effective power-based load control (EPBLC) to extend its advantage. Finally we give the conclusion that with SIC and EPBLC, we can get 43%-56% throughput gain under different interference cancellation efficiency.
    Proceedings of the 68th IEEE Vehicular Technology Conference, VTC Fall 2008, 21-24 September 2008, Calgary, Alberta, Canada; 01/2008
  • [Show abstract] [Hide abstract]
    ABSTRACT: As a demand for high speed uplink packet services increases, the WCDMA enhanced uplink, also known as high speed uplink packet access (HSUPA), has been specified in release 6 by 3GPR The performance of the HSUPA has been improved using fast scheduling, hybrid ARQ, and shorter TTI. This HSUPA will provide various types of multimedia services, such as realtime video streaming, gaming, VoIP, and FTP. Generally, the performance of HSUPA is dominated by scheduling policy. Therefore, it is required to design a scheduling algorithm considering the traffic characteristics to provide QoS guaranteed services in various traffic environments. In this paper, we propose a scheduling algorithm considering the traffic characteristics to guarantee QoS in a mixed traffic environment. Finally, the performance of the proposed scheduling algorithm is evaluated in terms of average packet delay, packet delay jitter, and system throughput using a system level simulator.
    Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on; 10/2007