A dynamic power and rate joint allocation algorithm for mobile multimedia DS-CDMA networks based on utility functions

Author

Duan, Xiang ; Niu, Zhisheng ; Huang, David ; Lee, David

Author_Institution

Tsinghua - Bell Labs Res. China Joint Lab. on Commun. (TUBECom), Tsinghua Univ., Beijing, China

Volume

3

fYear

2002

fDate

15-18 Sept. 2002

Firstpage

1107

Abstract

Radio resource allocation (RRA) is essential for providing quality-of-service (QoS) to users in wireless networks. In multimedia DS-CDMA networks, power and rate are key components of RRA. We propose a dynamic power and rate joint allocation algorithm for mobile multimedia DS-CDMA networks based on utility functions. The purpose of the algorithm is to maximize utilities of all users in the system. We decompose the utility optimization problem into two levels of subproblems so that the computational complexity is reduced. With our algorithm, radio resources are dynamically allocated to users according to their QoS requirements, current system load and channel condition. Simulation results show that our algorithm performs efficiently for multimedia traffic in mobile DS-CDMA networks.

Keywords

cellular radio; code division multiple access; computational complexity; multimedia systems; multiuser channels; optimisation; quality of service; radio networks; spread spectrum communication; telecommunication traffic; QoS; channel condition; computational complexity reduction; dynamic power allocation algorithm; dynamic rate joint allocation algorithm; mobile multimedia DS-CDMA networks; multimedia traffic; quality-of-service; radio resource allocation; round DS-CDMA cell; simulation results; subproblems; system load; utility functions; utility optimization problem; wireless networks; Computational modeling; Loss measurement; Mobile communication; Multiaccess communication; Power control; Power system modeling; Quality of service; Resource management; Telecommunication traffic; Traffic control;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on

Print_ISBN

0-7803-7589-0

Type

conf

DOI

10.1109/PIMRC.2002.1045199

Filename

1045199