Title :
QoS-driven rate control strategies for W-CDMA systems
Author :
Tung, Tracy ; Jamalipour, Abbas
Author_Institution :
Fac. of Eng., Univ. of Technol., Sydney, NSW, Australia
Abstract :
The paper summarizes the development of a genetic-based rate control algorithm. The aspect of rate control design focused on is specifically for implementation on the link/network layers. In this respect, the underlying concept is to adjust the transmission rate dynamically, subject to variations in network conditions such that distinct QoS requirements from individual users are complied with. The novelty of this work is mainly from two points of view: the consideration of near-far effects in the assignment of transmission power; the dynamic allocation of bandwidth in accordance with the variations in network conditions which include, but are not limited to, traffic characteristics and network loading. Simulation results show that the proposed rate control algorithm not only reduces the undesirable outage probability, but also increase the overall system throughput due to a reduced number of necessary retransmissions.
Keywords :
bandwidth allocation; code division multiple access; probability; quality of service; resource allocation; scheduling; telecommunication traffic; QoS-driven rate control strategies; W-CDMA systems; dynamic bandwidth allocation; genetic-based rate control algorithm; link layer; near-far effects; network layer; network loading; outage probability; resource allocation; scheduling; throughput; traffic characteristics; transmission power assignment; transmission rate; Algorithm design and analysis; Bandwidth; Bit error rate; Control design; Control systems; Genetic algorithms; Genetic engineering; Interference; Multiaccess communication; Throughput;
Conference_Titel :
Wireless Communications and Networking Conference, 2005 IEEE
Print_ISBN :
0-7803-8966-2
DOI :
10.1109/WCNC.2005.1424686
