Title :
Dynamic bandwidth allocation with fair scheduling for WCDMA systems
Author :
Xu, Liang ; Shen, Xuemin ; Mar, Jon W.
Author_Institution :
Waterloo Univ., Ont., Canada
fDate :
4/1/2002 12:00:00 AM
Abstract :
Dynamic bandwidth allocation (DBA) will play an important role in future broadband wireless networks, including the 3G and 4G WCDMA systems. A code-division generalized processor sharing (CDGPS) fair scheduling DBA scheme is proposed for WCDMA systems. The scheme exploits the capability of the WCDMA physical layer, reduces the computational complexity in the link layer, and allows channel rates to be dynamically and fairly scheduled in response to the variation of traffic rates. Deterministic delay bounds for heterogeneous packet traffic are derived. Simulation results show that the proposed CDGPS scheme is effective in supporting differentiated QoS, while achieving efficient utilization of radio resources.
Keywords :
bandwidth allocation; broadband networks; cellular radio; code division multiple access; computational complexity; delays; digital simulation; multimedia communication; multiuser channels; packet radio networks; processor scheduling; quality of service; telecommunication computing; telecommunication traffic; transport protocols; 3G WCDMA systems; 4G WCDMA systems; CDGPS; IP-based multimedia traffic; WCDMA physical layer; broadband wireless networks; channel rates; code-division generalized processor sharing; computational complexity reduction; deterministic delay bounds; differentiated QoS; dynamic bandwidth allocation; fair scheduling; frequency-division duplex cellular network; heterogeneous packet traffic; link layer; quality of service; radio resources utilization; simulation results; traffic rates; Channel allocation; Computational complexity; Computational modeling; Delay; Dynamic scheduling; Multiaccess communication; Physical layer; Processor scheduling; Traffic control; Wireless networks;
Journal_Title :
Wireless Communications, IEEE
DOI :
10.1109/MWC.2002.998522
