Nomadic application-oriented network congestion control method

Abstract

The invention relates to a nomadic-application-oriented network congestion control method. The network congestion adaptive method provides a congestion adaptive control algorithm based on up semi-normal distribution-DARED (distributed adaptive random early detection). According to the DARED algorithm, the corresponding congestion control is performed by improving an original data packet discarding probability function curve, namely adjusting an existing linear discarding straight line of an RED (random early detection) algorithm to a smooth curve, and dividing into different network states according to the queue length. The DARED is characterized in that a real-time dynamic parameter Pmax is introduced on the basis of the traditional RED algorithm, the stability of a queue is kept and the controllability of network congestion is increased. Correspondingly, in the aspect of a nomadic application system, when applied to the aspect of a multimedia seamless migration system, the congestion control algorithm realizes the seamless migration strategy under different architectures, namely the migration strategy under a B/S (browser/server) architecture, the migration strategy under a P2P (peer-to-peer) architecture and the migration strategy under a C/S (client/server) architecture. By adopting the nomadic application-oriented network congestion control method, the continuity, the rapidity, the smoothness and the correctness of media migration can be effectively ensured.

Description

【Technical field】: [0001] The invention belongs to the technical field of organic combination of computer network, communication and digital media. 【Background technique】: [0002] With the integration of mobile communication and mobile computing technology, the gradual maturity of mobile technology, the mobile interaction brought about by the application and development of mobile technology provides the possibility of online connection, communication and information exchange anytime and anywhere, and at the same time provides mobile work. New opportunities and challenges. With the expansion of network application scale and the increase of bearing services, the network load increases, local network congestion occurs, and the throughput decreases. In the real-time transmission of audio and video on the network in a nomadic environment, measures must be taken to prevent network congestion. How to effectively avoid communication congestion, improve network performance and oper...

AI Technical Summary

Problems solved by technology

[0005] (1) Insufficient storage space: If several TCP streams send data to a router at the same time, the storage capacity of the router is limited, and the ability of the receiving end to receive data is limited. At this time, it is necessary to establish a queue to process these data packets, but due to Limited by factors such as network equipment physics, the length of the queue is limited, and some data packets must be discarded. In view of the congestion caused by this situation, increasing the storage space can solve this problem

[0007] (3) The processing capacity of the processor is limited: if the processing speed of the CPU is lower than the transmission speed of the high-speed link, it is easy to generate bottlenecks and cause congestion

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