Network packet loss processing method and device

Abstract

The embodiment of the invention discloses a network packet loss processing method and a network packet loss processing device, which relate to the field of communication. The method comprises the following steps that when packet loss events occur, the current congestion window value of a network is compared with the buffer threshold; the buffer threshold is used for representing the data carrying capability of the whole network and is obtained by adding the data carrying capability of links in the network to the data carrying capability of node buffer regions in the network; if the current congestion window value is smaller than the buffer threshold, the current packet loss event is determined not to be caused by the congestion packet loss, and the back-off processing is not carried out on the current congestion window; and if the current congestion window value is greater than or equal to the buffer threshold, the current packet loss event is determined to be caused by the congestion packet loss, and the back-off processing is carried out on the current congestion window. Through the embodiment of the invention, the data transmission performance can be improved in the high-packet-loss-rate network environment.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for processing network packet loss. Background technique [0002] The original TCP (Transmission Control Protocol, Transmission Control Protocol) data transmission mechanism is designed for wired networks. The network includes a TCP sender (hereinafter referred to as the sender) and a TCP receiver (hereinafter referred to as the receiver). Each data packet must receive an acknowledgment from the receiving end. The acknowledgment signal is an ACK (ACKnowledgement) signal. If the ACK is not received within the specified time, the data packet will be retransmitted; the receiving end will receive each data packet. A confirmation must be sent to the sending end. If the data segment arriving out of order is received, it will be saved in the buffer, and a request will be sent to the missing data packet in the middle (in the form of repeated ACK) to receive the missi...

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Problems solved by technology

[0005] In the process of implementing the above-mentioned network packet loss processing, the inventors found that there are at least the following problems in the prior art: Although the prior art has filtered the random packet loss in the network to a certain extent, the network bandwidth is fully utilized and underutilized. The critical value beta is a parameter set manually, and it cannot accurately determine whether the packet loss event is caused by random packet loss, and after the random packet loss event is identified, the congestion window is still backed off, so that the sender uses a relatively Data is transmitted at a low rate, so in a network environment with a high packet loss rate, the performance of data transmission cannot be guaranteed

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