Weitere Artikel dieser Ausgabe durch Wischen aufrufen
Due to the fact that quality of service requirements are not very strict for all traffic types, more calls of higher priority can be accommodated by reducing some bandwidth allocation for the bandwidth adaptive calls. The bandwidth adaptation to accept a higher priority call is more than that of a lower priority call. Therefore, the multi-level bandwidth adaptation technique improves the overall forced call termination probability as well as provides priority of the traffic classes in terms of call blocking probability without reducing the bandwidth utilization. We propose a novel bandwidth adaptation model that releases multi-level of bandwidth from the existing multimedia traffic calls. The amount of released bandwidth is decided based on the priority of the requesting traffic calls and the number of existing bandwidth adaptive calls. This prioritization of traffic classes does not reduce the bandwidth utilization. Moreover, our scheme reduces the overall forced call termination probability significantly. The proposed scheme is modeled using the Markov Chain. The numerical results show that the proposed scheme is able to provide negligible handover call dropping probability as well as significantly reduced new call blocking probability of higher priority calls without increasing the overall forced call termination probability.
Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten
Sie möchten Zugang zu diesem Inhalt erhalten? Dann informieren Sie sich jetzt über unsere Produkte:
Chowdhury, M. Z., Uddin, M. S., & Jang, Y. M. (2014). Dynamic channel allocation for class-based QoS provisioning and call admission in visible light communication. The Arabian Journal for Science and Engineering, 39(2), 1007–1016.
Vergados, D. D. (2007). Simulation and modeling bandwidth control in wireless healthcare information systems. Simulation, 83(4), 347–364. CrossRef
Sgora, A., & Vergados, D. (2009). Handoff prioritization and decision schemes in wireless cellular networks: A survey. IEEE Communications Surveys & Tutorials, 11(4), 57–77. CrossRef
Zhuang, W., Bensaou, B., & Chua, K. C. (2000). Adaptive quality of service handoff priority scheme for mobile multimedia networks. IEEE Transactions on Vehicular Technology, 49(2), 494–505. CrossRef
Sheu, T.-L., & Huang, K.-C. (2011). Adaptive bandwidth allocation model for multiple traffic classes in IEEE 802.16 Worldwide Interoperability for Microwave Access Networks. IET Communications, 5(2011), 90–98. CrossRef
Nasser, N. (2009). Service adaptability in multimedia wireless networks. IEEE Transaction on Multimedia, 11(4), 786–792. CrossRef
Yu, F. R., Wong, V. W. S., & Leung, V. C. M. (2008). A new QoS provisioning method for adaptive multimedia in wireless networks. IEEE Transaction on Vehicular Technology, 57(3), 1899–1909. CrossRef
Alasti, M., Neekzad, B., Hui, J., & Vannithamby, R. (2010). Quality of service in WiMAX and LTE networks. IEEE Communications Magazine, 48(5), 104–111. CrossRef
Chowdhury, M. Z., Jang, Y. M., & Haas, Z. J. (2013). Call admission control based on adaptive bandwidth allocation for multi-class services in wireless networks. IEEE/KICS Journal of Communications and Networks, 15(1), 15–24. CrossRef
Schwartz, M. (2005). Mobile wireless communications. Cambridge: Cambridge University Press.
- Class-Based Service Connectivity Using Multi-level Bandwidth Adaptation in Multimedia Wireless Networks
Mostafa Zaman Chowdhury
Yeong Min Jang
- Springer US