Title :
Call admission control based on degradation and queues in wireless mobile networks
Author :
Song, Ling ; Wu, Linghui ; Yang, Xuejun
Author_Institution :
Sch. of Comput. & Electron. Inf., Guangxi Univ., Nanning, China
Abstract :
CAC is one of the most important parts of resource management in wireless cellular networks to keep the system work stable by accepting or rejecting users´ service requests. A call admission control(CAC) algorithm(DQ-CAC) based on unfair quality of service(QoS) degradation and queue buffers in wireless mobile networks is proposed. The handoff call dropping probability(CDP) for the high priority, call blocking probability(CBP) and degradable frequency(DF) are reduced by degrading some tolerable quality and bringing in queue buffers at the time of supplying insufficient available bandwidth. Simulation results show the algorithm not only lowered CDP and CBP but also reduced DF with a fixed degradable ratio. As a result, DQ-CAC improves system loads and meets the needs of users with different priority.
Keywords :
cellular radio; mobility management (mobile radio); probability; quality of service; queueing theory; telecommunication congestion control; call admission control; call blocking probability; degradable frequency; handoff call dropping probability; quality of service; queue buffers; resource management; unfair QoS degradation; wireless cellular networks; wireless mobile networks; Bandwidth; Call admission control; Degradation; Delay; Frequency; Intelligent networks; Mobile computing; Quality of service; Resource management; Wireless networks; call blocking probability; call dropping probability; degradable frequency; degradation; queue;
Conference_Titel :
Network Infrastructure and Digital Content, 2009. IC-NIDC 2009. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4898-2
Electronic_ISBN :
978-1-4244-4900-6
DOI :
10.1109/ICNIDC.2009.5360831
