Method based on response drive for controlling UDP congestion of P2P streaming media

A congestion control and streaming media technology, applied in digital transmission systems, electrical components, transmission systems, etc., to achieve the effect of low cost, simple UDP packets, and maximized service capabilities

Inactive Publication Date: 2010-09-29
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0006] And most of the current methods are flow control and congestion control at both the sender and the receiver, but in the P2P system, we always hope to put more things on the requester, so that the sender

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  • Method based on response drive for controlling UDP congestion of P2P streaming media
  • Method based on response drive for controlling UDP congestion of P2P streaming media
  • Method based on response drive for controlling UDP congestion of P2P streaming media

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Embodiment Construction

[0029]In view of the aforementioned technical background, the present invention provides a method for controlling end-to-end congestion in a P2P network using UDP protocol to transmit streaming media.

[0030] The congestion control method of the present invention is described in detail below:

[0031] Such as Figure three As shown, the present invention realizes the end-to-end congestion control under the UDP protocol in the P2P system by controlling the speed at which the requester sends the request packet and the response mode of the sender.

[0032] The sender's response strategy is as follows:

[0033] Each time the sender receives a request packet, it records the current time, that is, its arrival time t x+1 And with the previous request packet arrival time t x Compare and calculate the time interval Δt between two request packets (Δt=t x+1 -t x ); According to Δt and the number n of data packets requested to be sent, calculate the current packet sending interval ST...

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Abstract

The method aims at the problems of relatively complicated congestion control, high congestion control expense and the like of UDP transmission in P2P application at present, combines the self characteristics of the UDP transmission and the characteristics of a P2P system and provides a congestion control strategy which is controlled by a receiving party and responded by a transmitting party in the P2P system. The method regulates the packet transmission interval STP of a request packet dynamically according to the change of the intercourse time RTT of a current network, realizes end-to-end congestion control by the dynamic regulation of the STP and maximizes the transmission rate of a P2P data packet under the condition of meeting the congestion control.

Description

technical field [0001] The design of the invention is a UDP congestion control method using UDP to transmit streaming media in a P2P system. technical background [0002] Peer-to-peer computing (Peer-to-Peer, referred to as P2P) has quickly become one of the hot topics in the current computer industry. Each Peer in the P2P network is not only a resource (service and content) provider (ie server), but also a Resource acquirers (aka clients). Since its concept was put forward, various applications have developed rapidly. At present, P2P applications have become one of the main applications of the Internet, and the P2P mode has also become the preferred mode of many new services. P2P technology is widely used in file sharing, network video, Internet telephony and other fields. By using its distributed resource sharing and parallel transmission characteristics, it provides users with more resources, higher available bandwidth and better service quality. P2P nodes do not rely o...

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Application Information

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IPC IPC(8): H04L12/56H04L29/06H04L12/841
Inventor 吴云侠朱跃生张李伟李广静石贵军
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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