Title :
A Novel Linear-Programming Based Approach for Near-Optimal Rate Allocation in the UMTS Enhanced Uplink
Author :
Liu, Tuo ; Mader, Arnaud ; Staehle, Dirk
Author_Institution :
Univ. of Sydney, Sydney
Abstract :
The recent evolvement of UMTS is the proposal of enhanced uplink, or HSUPA, for high speed packet data access. In this paper, we present a linear-programming based framework for the calculation the resources assigned to each enhanced uplink user in the multi-cell environment, in order to account for the unnecessary outage problem. The interference and load models under such resource allocation schemes, both non-iterative and iterative, are built to characterize the system behavior and evaluate the system performance. The ´down grants´feature of HSUPA, which is to suppress the interference from soft handover area is also included in the analysis. The system performance under various resource allocation schemes are analyzed and compared by Monte-Carlo simulations, which shows the proposed framework may serve as a good estimation to study performance for the network operators.
Keywords :
3G mobile communication; Monte Carlo methods; interference suppression; linear programming; radio links; radiofrequency interference; HSUPA; Monte-Carlo simulations; UMTS enhanced uplink; high speed packet data access; interference models; interference suppression; linear-programming based approach; multicell environment; near-optimal rate allocation; resource allocation schemes; soft handover area; 3G mobile communication; Downlink; Information technology; Interference; Load modeling; Multiaccess communication; Proposals; Resource management; System performance; Telecommunication traffic;
Conference_Titel :
Wireless and Mobile Computing, Networking and Communications, 2007. WiMOB 2007. Third IEEE International Conference on
Conference_Location :
White Plains, NY
Print_ISBN :
978-0-7695-2889-2
DOI :
10.1109/WIMOB.2007.4390798
