Title :
Dynamic code assignment improves channel utilization for bursty traffic in third-generation wireless networks
Author :
Fossa, Carl E., Jr. ; Davis, Nathaniel J., IV
Author_Institution :
Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
Emerging third generation (3G) wireless standards promise a "last-mile" solution capable of supporting mobile, wireless Internet service. The Third Generation Partnership Proposal (3GPP) wideband code division multiple access (WCDMA) standard will support data rates up to 2 Mbit/s with orthogonal variable spreading factor (OVSF) codes. These variable spreading factor codes provide a means of bandwidth allocation in a CDMA system. This paper presents a dynamic OVSF code assignment algorithm that efficiently shares a WCDMA downlink between data traffic sources with different quality of service (QoS) requirements. Both analytic and simulation results for bursty traffic sources demonstrate that our dynamic code assignment algorithm offers significant improvement in channel utilization over dedicated code assignment schemes.
Keywords :
Internet; bandwidth allocation; channel allocation; code division multiple access; data communication; mobile computing; mobile radio; quality of service; spread spectrum communication; telecommunication traffic; 3G wireless standards; 3GPP; OVSF codes; QoS; Third Generation Partnership Proposal; WCDMA; bandwidth allocation; bursty traffic; bursty traffic sources; channel utilization; data traffic; dynamic code assignment; last-mile solution; mobile Internet service; orthogonal variable spreading factor; quality of service; third-generation wireless networks; wideband code division multiple access; Channel allocation; Code standards; Multiaccess communication; Proposals; Quality of service; Telecommunication traffic; Traffic control; Web and internet services; Wideband; Wireless networks;
Conference_Titel :
Communications, 2002. ICC 2002. IEEE International Conference on
Print_ISBN :
0-7803-7400-2
DOI :
10.1109/ICC.2002.997401
