Quality of Services in 4G networks
Journal Title: International Journal of Research in Computer and Communication Technology - Year 2013, Vol 2, Issue 9
Abstract
Due to the difference between the access technologies and the disparity of application's QoS requirements, there is a significant need to make available a unified approach that integrates all useful access networks. The fourth generation wireless networks will envision flexible and adaptive integration of network technologies to enable mobile station to seamlessly roam between access networks. These networks should not only provide the commonly known Internet services, but also should transport the traditional voice service and other real-time applications. Eventually, they should allow more advanced broadband multimedia services with varying QoS requirements (e.g., preferred low handoff delay, high bandwidth utilization, low new call and handoff blocking probability, low loss packets, high packet rate). QoS mechanisms, including admission control, and scheduling allow multimedia applications to get certain quality of service guarantees on bandwidth, loss rate, and delay for its packets delivery. Providing QoS guarantees in 4G networks is a non-trivial issue. In this paper, first presents quality of service challenges for wireless fourth generation network. Then, developed a novel medium access control, called MACW4G. The latter covers radio link control, medium access control, and part of physical layers corresponding to the protocol stack for wireless Internet. MACW4G take in account the constraints imposed by the heterogeneity of access networks.
Authors and Affiliations
Sri Devi
Keywords
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