WiMAX(worldwide interoperability for Microwave Access) networks are the networks which are responsible for providing many services like video, data and voice. The WiMAX technology satisfies the modern need of broadband internet through wireless access. For managing all these services through WiMAX, IEEE802.16 gives QOS (Quality of Service) parameter. In WiMAX, a fundamental challenge is to achieve high QOS so that various parameters like waiting time, end to end delay can be minimized and other parameter like execution time and network utilization etc. To obtain high QOS there is scheduling algorithm which is implemented at the base station and subscriber stations. In this paper we discuss scheduling algorithms and also compare the parameters (waiting time, turnaround time, execution time, packet drop age and packet delivery). We purpose a scheduling algorithm which is combination of greedy latency, distance calculation of user from base station, calculate the burst time and apply SJF on that burst values.
As we know wireless broadband internet is very popular in modern era. For wireless Broadband internet, speed is big issue and it is a hot research area for researchers to focus on this area. WiMAX (worldwide interoperability for Microwave Access) networks are the networks which are capable for providing BWA(broadband wireless Access) with high speed. A WiMAX has one base station (BS) and one or more subscriber station (SS). IEEE 802.16 standard gives QOS parameter to traffic. It offers five categories to prioritize the traffic. Five categories are the classes in which traffic can be divided. These five classes are VoIP, MPEG video, FTP, MPEG video and web browsing. Once the packets are classified according the IEEE802.16 standards, these packets are placed into multipriority queue. In this queue these packets are placed from high priority to low priority. After that the application of scheduler comes into the picture. A Scheduler executes the process according to priority of processes. Scheduling plays an important role in WiMAX. For Scheduling there are algorithms which manage the incoming packets for each process of various nodes. These Algorithms are responsible for processing and executing the process in ready Queue. Scheduling algorithms deals with many parameters like turnaround time, waiting time and execution time etc. This paper deals with features of scheduling algorithms and also classification of scheduling algorithms. This paper also suggests a new scheduling algorithm.
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