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Method for synchronous frame transmitting on IP network and network apparatus for transmission

A network device and IP network technology, applied in the field of data transmission, can solve problems such as packet loss, increased burden on a network with tight transmission resources, and device performance degradation, and achieve the effects of improving transmission efficiency, increasing bandwidth utilization, and high-speed transmission

Active Publication Date: 2009-07-29
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Apparently, the prior art synchronous frame is transmitted on the basis of TCP or UDP, because the TCP header or UDP header is added on the basis of the original synchronous data frame part, so it will increase a large burden on the network with tight transmission resources. Reduce the efficiency of network transmission
In addition, due to the own characteristics of TCP or UDP, that is, TCP connection request and retransmission of data, the performance of the device will be seriously degraded; while UDP data transmission will cause packet loss, which will affect the integrity of the data and give the data Transmission brings unreliability

Method used

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  • Method for synchronous frame transmitting on IP network and network apparatus for transmission
  • Method for synchronous frame transmitting on IP network and network apparatus for transmission
  • Method for synchronous frame transmitting on IP network and network apparatus for transmission

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Embodiment Construction

[0034] First, with figure 1 and Figure 6An example is used to illustrate the synchronization technology of the present invention. When the network device A receives the data frame from the synchronous serial port device A, it adds the byte of the time stamp to the head of the data frame, and for the first data frame received, the time stamp byte is marked as T1; for the received The second data frame, its timestamp is T2, where T2 is the time interval between receiving the second data frame and receiving the first data frame, for the third received data frame, its timestamp byte It is recorded as T3, where T3 is the time interval between the time of the third data frame received and the second data frame received. For subsequent data frames, the timestamp byte is set in this way. In addition, the calculation of the time stamp value may also be calculated based on the time interval when network device A sends data frames. For example, when sending the first data frame, set...

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Abstract

Network equipment at sending end packs several data frames received early or late into IP data packet, and sends the IP data packet to network equipment at receiving end through IP network. Data frame in IP data packet stores recorded timestamp of transmission time difference between adjacent data frames. Based on comparison between time interval of data frame received successively and data frame stored timestamp, the network equipment at receiving end determines whether the received IP data packet is transmitted out. Moreover, through types, sequence number id in IP data packet, the method determines whether reception is correct in order to decide whether to ask the sending end to do retransfer. Features are: realizing synchronous transmission of data frame, increasing use ratio of bandwidth, and raising transmission efficiency.

Description

technical field [0001] The present invention relates to data transmission technology, in particular to a method for synchronous frame transmission on Internet Protocol (IP: Internet Protocol) and network equipment for transmission. Background technique [0002] At present, in the prior art, the synchronization frame is transmitted based on Transmission Control Protocol (TCP: Transfer Control Protocol) or User Datagram Protocol (UDP: User Datagram Protocol). The network structure of this transmission mode is as follows: figure 1 Shown: Synchronous serial port device A is connected to network device A through a synchronous data cable, network devices B and C are respectively connected to synchronous serial device B and C through a synchronous cable, and then network devices A, B and C are connected through an IP network. [0003] The working process of the above-mentioned transmission method is specifically: the synchronous serial port device A sends data to the network devic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04Q11/00
Inventor 董辉
Owner NEW H3C TECH CO LTD
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