论文信息 - Network-Level Simulation Results of Fair Channel-Dependent Scheduling in Enhanced UMTS

Network-Level Simulation Results of Fair Channel-Dependent Scheduling in Enhanced UMTS

In this paper, previously performed UMTS studies have been extended to enhanced UMTS, and combined with several scheduling algorithms (ref. [1,2]). Scheduling algorithms for W-CDMA systems ranging from C/I based scheduling to Round-Robin scheduling are presented and discussed. We also include a trade-off between these two extreme methods of scheduling: Fair channel-dependent scheduling. All these scheduling algorithms have been implemented in a network simulator in ns-2, employing input trace files of SNRs, modeled from link-level simulation results. The network-level simulation results indeed display that the advantages of both extremes in scheduling algorithms have been combined in the new algorithm: a good fairness, comparable to that of Round-Robin scheduling, together with an efficient use of resources, as seen in C/I based scheduling.

Irene de Bruin

[1] S. W. Roberts. Control chart tests based on geometric moving averages , 2000 .

[2] Geert Heijenk,et al. Performance of TCP over UMTS common and dedicated channels , 2003 .

[3] Geert Heijenk,et al. Fair channel-dependent scheduling in CDMA systems , 2003 .

[4] S. W. Roberts,et al. Control Chart Tests Based on Geometric Moving Averages , 2000, Technometrics.

[5] Ainslie,et al. CORRELATION MODEL FOR SHADOW FADING IN MOBILE RADIO SYSTEMS , 2004 .

[6] A. Correia,et al. Usage of link-level performance indicators for HSDPA network-level simulations in E-UMTS , 2004, Eighth IEEE International Symposium on Spread Spectrum Techniques and Applications - Programme and Book of Abstracts (IEEE Cat. No.04TH8738).