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Method, device and transmission system for transmitting/receiving section overhead in synchronous digital hierarchy/synchronous optical network (SDH/SONET) circuit emulation

A technology of circuit simulation and overhead, applied in the field of transmission system, can solve the problems of broken frequency relationship, service instability, etc., and achieve the effect of improving compatibility

Inactive Publication Date: 2012-06-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the receiver, it is possible to completely receive an SDH / SONET frame by receiving the frequency of the PWE3 message, but after encapsulating the dedicated overhead message separately, this fixed frequency relationship will be destroyed, resulting in service instability

Method used

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  • Method, device and transmission system for transmitting/receiving section overhead in synchronous digital hierarchy/synchronous optical network (SDH/SONET) circuit emulation
  • Method, device and transmission system for transmitting/receiving section overhead in synchronous digital hierarchy/synchronous optical network (SDH/SONET) circuit emulation
  • Method, device and transmission system for transmitting/receiving section overhead in synchronous digital hierarchy/synchronous optical network (SDH/SONET) circuit emulation

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Embodiment Construction

[0045]A method, device and transmission system for sending / receiving section overhead in SDH / SONET circuit emulation according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0046] One embodiment of the present invention provides a method for sending section overhead in SDH / SONET circuit emulation, such as Figure 2a As shown, the method includes:

[0047] 101. The sending end encapsulates the segment overhead at a preset position in the PWE3 message carrying the SDH / SONET payload;

[0048] 102. The sending end sends the PWE3 packet encapsulated with segment overhead to the receiving end.

[0049] Another embodiment of the present invention also provides a method for receiving segment overhead in SDH / SONET circuit emulation, such as Figure 2b As shown, the method includes:

[0050] 103. The receiving end receives a PWE3 message carrying an SDH / SONET payload, and a preset position in the PWE3 messag...

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Abstract

The invention discloses a method, a device and a transmission system for transmitting / receiving section overhead in synchronous digital hierarchy / synchronous optical network (SDH / SONET) circuit emulation, and relates to the technical field of communication. The method comprises the following steps that: a transmitter packages the section overhead at a preset position in a pseudowire emulation edge-to-edge (PWE3) message carrying an SDH / SONET payload; the transmitter transmits the PWE3 message packaged with the section overhead to a receiver; the receiver receives the PWE3 message carrying the SDH / SONET payload, wherein the section overhead is packaged at the preset position in the PWE3 message; and the receiver acquires the section overhead from the preset position in the PWE3 message. The embodiment of the invention is mainly applied to the process of transmitting the section overhead in the SDH / SONET circuit emulation.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method, device and transmission system for sending / receiving segment overhead in SDH / SONET circuit emulation. Background technique [0002] With the development of communication technology, pseudowire end-to-end emulation (English full name: Pseudowire Emulation Edge-to-Edge, hereinafter referred to as: PWE3) technology is widely used in Internet Protocol / Multiprotocol Label Switching (English full name: Internet Protocol / Multiprotocol Label Switching, hereinafter referred to as: IP / MPLS) network simulation time division multiplexing (English full name: Time Division Multiplexing, hereinafter referred to as: TDM) signal. [0003] The standard for the simulation of Synchronous Digital Hierarchy / Synchronous Optical Network (English full name: Synchronous Digital Hierarchy / Synchronous Optical Network, hereinafter referred to as: SDH / SONET) is mainly Request for Comments (Eng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/24H04L47/43
Inventor 杨炀叶剑张文洋蔡亨光
Owner HUAWEI TECH CO LTD
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