Network data transmission method and device

A network data transmission and data volume technology, applied in the field of communication, can solve problems affecting normal business communication, lack of information at the receiving end, etc.

Active Publication Date: 2016-03-30
RAISECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The receiving end cannot normally receive all the data sent by the sending end, that is, the entire network system loses packets during the data tra

Method used

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  • Network data transmission method and device
  • Network data transmission method and device
  • Network data transmission method and device

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Embodiment Construction

[0052] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0053] The network data transmission method provided by the embodiment of the present invention is applied to an end-to-end asynchronous transmission network, such as image 3 shown. In end-to-end asynchronous transmission Ethernet, when sending and receiving packets between two network nodes, that is, one network node is the sending end, the other network node is the receiving end, and the intermediate network node forwards the message. The sending end is fully loaded with a fixed packet sending rate, for example, V, and the sending end sends Ethernet packets with a fixed frame length. If the packet sending time is T, the total number of packets sent by the sending end is Q...

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Abstract

The invention discloses a network data transmission method and device, and is applied to an end-to-end asynchronous transfer network. The method comprises the steps of when the actual operation parameter of a network link from a packet sending end to a packet receiving end is in a preset low-load state and the data volume received by the packet receiving end is smaller than the data volume sent by the packet sending end within a predetermined packet transmission duration, adjusting the service transmission rate of the packet sending end according to a first preset policy; when the service transmission rate of the packet sending end is adjusted to be a minimum transmission rate and the data volume received by the packet receiving end is still smaller than the data volume sent by the packet sending end within the predetermined packet transmission duration, transmitting a TCP message containing a PTP field in the network link from the packet sending end to the packet receiving end to realize the clock synchronization. Based on the network data transmission method and device, the number of lost data packets during the data transmission process of the asynchronous network can be reduced.

Description

technical field [0001] The invention relates to the communication field, in particular to a network data transmission method and device. Background technique [0002] In Ethernet, traditional asynchronous data transmission takes place in the form of sending and receiving packets. Ideally, the number of data packets received by the receiving end is equal to the number of data packets sent by the sending end. Moreover, since the packet sending rate, receiving rate, and traffic between nodes in the Ethernet are all bursty, each device in the Ethernet uses a cache mechanism to smooth the packet exchange between different nodes. of suddenness. Specifically, each device presets a cache space of a fixed size. Taking the sliding window and cache mechanism in the Transmission Control Protocol (TCP, TransmissionControlProtocol) / Internet Protocol (IP, InternetProtocol) standard as an example for illustration, the sending end writes the message to be sent into the sending buffer, suc...

Claims

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Application Information

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IPC IPC(8): H04J3/06H04L1/00H04L12/801
CPCH04J3/0667H04L1/0002H04L1/0015H04L47/18
Inventor 杨宏宇秦萌
Owner RAISECOM TECH
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