Abstract
The objective of the broadband wireless technologie s is to ensure the end to end Quality of Service (Q oS) for service classes. Wimax is a revolution in wirel ess networks which could support real time multimedia services. In order to provide QoS suppor t and efficient usage of system resources an intelligent scheduling algorithm is needed. The des ign of detailed scheduling algorithm is a major focus for researchers and service providers. In thi s study, a channel aware cross-layer scheduling algorithm for Wimax networks has been proposed. This scheme employs Signal to Noise Ratio (SNR) value which allocates bandwidth based on the inform ation about the quality of the channel and service requirements of each connection. The proposed algor ithm is described in detail and evaluated through series of simulation. The simulation results prove that the proposed algorithm reduces the packet loss rate and delay and thus improves throughput by 12.8 %.
Highlights
Wimax (World Wide Interoperability for Microwave Access) is an IEEE standard (IEEE 802.16d/e) that promises high bandwidth solution with long range for metropolitan area networks
Quality of Service (QoS) parameters throughput, packet loss, average delay was calculated for three different kinds of service flow with varied number of Subscriber Station (SS)
In this study we addressed the problem of a crucial scheduling strategy which takes channel condition as a feedback for better bandwidth usage for IEEE 802.16 wireless networks
Summary
Wimax (World Wide Interoperability for Microwave Access) is an IEEE standard (IEEE 802.16d/e) that promises high bandwidth solution with long range for metropolitan area networks. Recent researches focus mainly on the OFDM and OFDMA PHY supports These standards define two operational modes for communication namely; mesh mode and point-to-multipoint mode. Internet Protocol (IP), Ethernet and Asynchronous Transfer Mode (ATM) traffic are supported by convergence sublayer This layer converts the traffic into MAC data units. Wimax network provides broadband access for services having different QoS requirements and different traffic priorities. It is the responsibility of the MAC layer to schedule the traffic flows and to allocate the bandwidth such that QoS requirements of each flow are satisfied. Extended Real Time Polling Services (ERTPS): Designed to support real time applications with variable data rates which require guaranteed data and delay.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
