Data packet transmission method and device

Abstract

The invention discloses a data packet transmission method and a device, wherein the method comprises that the QoS level of the current scheduling is determined, and bandwidth resources are distributed to various application contained in the QoS level; the application of the current scheduling in the QoS level is determined; and the data packet of the application is extracted, and the bandwidth resources distributed to the application carry the data packet to transmit. The method and the device provided by the invention control the bandwidth resource obtaining of the application contained in the same QoS level.

Description

technical field [0001] The invention relates to the communication field, in particular to a data packet transmission method and device for multi-transmission connection applications. Background technique [0002] In the communication network, on the switch, the data packets of each application included in the same QoS level adopt a shared cache method, that is, they are stored in a cache area, and the bandwidth resources obtained by each application included in the same QoS level are not controlled. Therefore, in When the network is not congested, if the application establishes multiple transmission connections (TCP or UDP connections), according to the TCP congestion control algorithm, the rate of sending data packets of the application with multiple TCP connections increases faster (the application with relatively few TCP connections) is faster. Fast, at this time, applications with multiple TCP connections will occupy the remaining bandwidth resources of the switch, and t...

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Problems solved by technology

[0005] The disadvantage of the above scheme is: no flow control strategy is given, that is, under what circumstances to perform the containment operation and under what circumstances to perform the blocking operation; and this scheme belongs to the terminal side scheme, because the terminal side cannot know whether the current state of the network is In a congested state, when controlling the flow of the application, it is impossible to comprehensively consider the load state of the network, so it is not possible to release the control in a timely manner when the network is not congested, and perform control when the network is congested; flow control of multi-transport connection applications The principle is to ensure the quality of service of specific applications while encouraging general applications to use the remaining bandwidth resources, but this scheme does not treat applications with different quality of service differently; in addition, this scheme is proposed for P2P flow control and is not suitable for general multi-transmission Flow Control for Connected Applications

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