Dynamic priority handoff scheme in differentiated QoS wireless multimedia networks

• Published in: Proceedings of the Eighth IEEE Symposium on Computers and Communications. ISCC 2003 pp. 131 - 136 vol.1
• Main Authors: Yaya Wei, Chuang Lin, Fengyuan Ren, Raad, R., Dutkiewicz, E.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 2003
• Subjects: Acceleration; Base stations; Delay; Intelligent networks; Mobile computing; Next generation networking; Quality of service; Telecommunication traffic; Traffic control; Wireless networks
• ISBN: 9780769519616; 076951961X
• ISSN: 1530-1346; 2642-7389
• DOI: 10.1109/ISCC.2003.1214112

Handoff is one of the key elements in ensuring quality of service (QoS) in mobile wireless networks. Handoff connections generally have higher priority than new connections. Traditional reservation policies that reserve some channels for handoff connections are not adaptive to traffic load changes. This paper proposes a new dynamic guard channel scheme (DGCS), which 1) adapts to various traffic loads; 2) combines differentiated QoS service model and priority handoff mechanism; 3) provides fairness for differentiated QoS services; 4) does not need to exchange state information among different cells, so it is easy to be implemented and is simple enough to be used in real time environments; 5) and utilizes network resources efficiently and puts a bound on each service blocking probability. The simulation results show that the ratios among different QoS service probabilities are guaranteed to be predefined values and system utilization is improved greatly.