Research On Network Congestion Control Of Electrical Enterprise

For the past few years,power enterprises have made remarkable achievements on normalization. Most application systems have introduced the model based on highly centralized server. Surely, as the business lines and concurrent users increase, the WANS in most cities become overloaded. Simultaneous use of WAN at the peak time will probably lead to a network jam and have a bad influence on the quality of the service. In order to meet development of internet business and the need of network users, we must try our best to improve the quality of the network service with current hardware we own.As the high request to the safety of the transformer substation, Remote Image Monitoring Systems have been widely used. Real-time video streams have increased the burden on the internet of the transformer substation. As video stream transporting is time-bounded and involves large data and has a high request to the quality of service, the UDP is widely used in transmission in practice. By using UDP to avoid network jam in data transmission, the bandwidth of other service flows in the information network may be occupied infinitely, which also lead to a network will jam. So, congestion control mechanism must be used in video stream transmission.This paper focuses on two aspects. The first part is how to improve the QoS (QoS-Quality of Service)of the Enterprise Information Network. The paper demonstrated the feasibility for the enterprise core router to introduce first-in-first-out queue (FIFO), priority queue (PQ), custom queue (CQ), weighted fair queue (WFQ),and class-based queue (CBQ), which will finally be put into practice by using WFQ. WFQ is a way to dynamically allocate the bandwidth by using Hash Algorithm which will automatically adjust the streaming according to bandwidth. In this way, the tasks of the same priority will strike a balance, and the tasks of different priority will be dealt in different order by weighting. The weight number depends on IP precedence in the IP headers. The paper has classified all the business systems into different priority level, so each IP has got a priority level and was confabulated with WFQ through the router. The congestion control of WAN of power enterprises in different cities is put into practice which effectively improve the QoS and the stability of the links are well guarantied.The second part focuses on a proper congestion control of real-time streaming transmission. The article analyzed the congestion control of real-time multimedia streaming transmission, the TC-TFRC, and found one disadvantage of the that the final time of which is a fixed value. To deal with it, this article proposed improvements and simulation experiment was also been carried on. The speed difference has also been introduced in to identify the network congestion situation and dynamically set the final time of the "tolerable transient timer", so that more data can be sent when the network is overloaded.