Research On The Packet Scheduling Algorithms Optimization Of Wireless Network Based On TDM

Now, the Internet and mobile communications become an important part of people's lives. The wireless network is a new product in recent years and there are kinds of business applications in the Internet. According to different type of business, business on wireless network can be divided into two types: real-time business and non-real-time business. The difference between these two types of business is reflected on the time delay requirements.For non-real-time business, some researchers put forward statistical fairness based opportunistic scheduling. This article improves on fair scheduling algorithm based on statistics. It retentions the maximum signal-to-noise ratio and the virtual time, and then adds users with an average data transfer rate. Through the average data transfer rate with adaptive adjustment of scheduling results achieve an average data transfer rate of weighted fair.For real-time business, researchers present a scheduling algorithm for real-time business opportunity based on the basis of classical algorithms. This algorithm can achieve good channel utilization, and users with better channel condition can be responded in a short time. But, users with poor channel conditions need to be responded in a relatively long time to get the service. By adding the average data transfer rate into judgment, the adjustment of the average data transfer rate can weaken the channel conditions'influence on the judgment results. This enables users with poor channel conditions be scheduled within a relatively short period of time. It provides better performance for all the users.The two improved algorithms are theoretically proved. It also requires experimental validation of the simulation. By simulation, it proved that the improved algorithms are better than the other algorithms. Finally, it summaries the whole text and gives the direction that are not studied in this article.