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Service information sending, receiving method and apparatus, and communication system

A technology of service information, transmission device, applied in the direction of transmission system, communication between multiple stations, error detection/prevention using signal quality detector, etc.

Inactive Publication Date: 2013-01-30
江苏科利新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the state that the receiving end does not support empty frames, the single-ended sending of empty frames by the sending end may cause abnormal processing at the receiving end, and the receiving end cannot recognize empty frames, so the receiving end The end cannot quickly fill up the reassembly window and discard it so as to realize the rapid synchronization of the sequence numbers of the sending end and the receiving end, which will also cause the receiving end to wait too long and cause communication protocol timeout interruption

Method used

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  • Service information sending, receiving method and apparatus, and communication system
  • Service information sending, receiving method and apparatus, and communication system
  • Service information sending, receiving method and apparatus, and communication system

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Embodiment Construction

[0038] like figure 2 As shown, it is a flow chart of the first embodiment of the service information sending method of the present invention, which may specifically include the following steps:

[0039] Step 11, the sending end and the receiving end negotiate whether to support empty frame interaction;

[0040] Specifically, when negotiating the MLPPP protocol, the sending end and the receiving end negotiate whether to support empty frame interaction;

[0041] Step 12, the sending end sets the state of the empty frame identifier according to the negotiation result; wherein, if both the sending end and the receiving end support empty frame interaction, the state of setting the empty frame identifier is an effective state;

[0042] In addition, if at least one of the sending end and the receiving end does not support empty frame interaction, the state of the empty frame flag is set to an invalid state;

[0043] Step 13. When the sending end performs switching between the acti...

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PUM

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Abstract

The embodiment of the invention relates to a method and a device for sending and receiving service information, and a serial number synchronization system, wherein the method for sending the service information comprises the following steps that: a sending end and a receiving end negotiate whether the blank frame interaction is supported; the sending end sets the state of a blank frame identifier according to a negotiation result, wherein if the sending end and the receiving end both support the blank frame interaction, the state of the blank frame identifier is set as an effective state; and when the sending end performs the switching between an active main control board and a standby main control board, the state of the blank frame identifier is identified, and a blank frame is sent to the receiving end when the state of the blank frame identifier is the effective state. The method and the device for sending and receiving the service information and the serial number synchronization system ensure that the receiving end can identify the blank frame sent by the sending end, and quickly realize the serial number synchronization between the sending end and the receiving end when the sending end performs active-standby switching.

Description

technical field [0001] The invention relates to communication technology, in particular to a method and device for sending and receiving business information, and a sequence number synchronization system. Background technique [0002] Multi-link Point-to-Point Protocol (Multi-link Point-to-Point Protocol, hereinafter referred to as: MLPPP) realizes a larger connection between two fixed endpoints by bundling multiple independent physical links into one logical link. Logical transfer bandwidth. In order to support the above-mentioned large logical transmission bandwidth and meet the specific requirements of the Maximum Receive Unit (MRU) of each physical link, the sending end of each physical link has a slicing module, and the receiving end has a reassembly module , the slicing module at the sending end slices a long Protocol Data Unit (PDU) into multiple fragment data (fragment data) by slicing, and encapsulates the fragment data into MLPPP frames for transmission. like ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04L29/08H04L1/20
Inventor 李靖孔涛
Owner 江苏科利新材料有限公司