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Multi-level straight-through protection device and method applied to sdh transmission serial equipment

A protection device and equipment technology, applied in the direction of multiplexing system selection device, selection device, multiplex communication, etc., can solve problems such as impact, achieve a wide range of applications, meet the needs of access and direct operation, Line no harm effect

Active Publication Date: 2020-07-24
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the primary problem of connecting special management equipment to the original communication line is to solve the problem that the access or direct operation of the special equipment cannot affect the transmission of the original line, and the user should not feel it. impact, is an urgent problem that needs to be addressed

Method used

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  • Multi-level straight-through protection device and method applied to sdh transmission serial equipment
  • Multi-level straight-through protection device and method applied to sdh transmission serial equipment
  • Multi-level straight-through protection device and method applied to sdh transmission serial equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: as Figure 1~3 As shown, a multi-stage direct connection protection device applied to SDH transmission includes a dedicated series connection device 3 arranged between the SDH network 1 and the router 2, and the dedicated series connection device 3 is internally provided with a multi-stage direct connection The protection device and the docking interface 9, the dedicated serial connection device 3 forms SDH network transmission with the SDH network 1 and the router 2 through the docking interface 9; the multi-level direct protection device includes a first-level direct protection module, a second-level direct protection module and a third A soft direct protection module, the front end of the first-level direct-through protection module is connected to an optical splitter 4, and the output ends of the optical splitter 4 are respectively connected to the pair interface 9 and the first-level direct-through protection module, and the first-level direct-through ...

Embodiment approach

[0035] As a preferred embodiment, the secondary cut-through protection module includes an electronic switch 7;

[0036] In the optical path access mode, the electronic switch 7 operates in two modes after receiving the electrical signal output by the photoelectric conversion module 6 , and the two modes are the secondary direct protection operation mode and the signal access mode.

[0037]It should be noted that the second-level cut-through protection module uses the electronic switch 7, because the electronic switch 7 responds quickly and has a small delay, so that the transmission network can be switched without feeling; and the first-level cut-through protection operation mode has already started Under the premise of the function, in the actual operation process, when cooperating with the operator to locate the fault of various abnormal calls or traffic, switch and cut-through protection at any time according to the needs of the business. At the same time, it also has the c...

Embodiment 2

[0042] Embodiment 2: as Figure 4~5 As shown, a method for multi-level cut-through protection of serial equipment applied to SDH transmission based on a multi-level cut-through protection device applied to SDH transmission comprises the following steps:

[0043] Step 1: Connect the dedicated serial connection device 3 to the SDH network transmission line formed by the SDH network 1 and the router 2; the optical signal input by the SDH line passes through the optical splitter 4 and is transmitted to the interface 9 all the way to complete the dedicated serial connection Synchronization signal extraction and working mode configuration of device 3;

[0044] Specifically, such as Figure 5 As shown, the optical splitter 4 performs action ① to connect the original transmission line based on the SDH network 1 to the optical splitting interface of the dedicated serial connection device 3, and the original line is directly looped back to the original system after being processed by t...

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PUM

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Abstract

The invention provides a cascade connection equipment multi-stage direct connection protection device applied to SDH transmission, which comprises special cascade connection equipment arranged betweenan SDH network and a router, and the special cascade connection equipment is internally provided with a multi-stage direct connection protection device and a docking port; the multi-stage straight-through protection device comprises a first-stage straight-through protection module, a second-stage straight-through protection module and a third-stage soft straight-through protection module. The invention also provides a cascade equipment multi-stage direct connection protection method applied to SDH transmission. The cascade equipment multi-stage direct connection protection method applied to SDH transmission comprises the following steps: special cascade equipment is accessed to a line of SDH network transmission; an optical signal passing through the optical splitter passes through the optical switch, and the optical switch acts to enter a first-stage straight-through protection operation mode; or the optical switch acts to enter an optical path access mode; the optical signal is converted into an electric signal to be output; the electronic switch receives the control instruction and executes the action to enter a second-level direct connection protection operation mode; or a signal access mode is entered; and the electric signals enter the SDH transmission exchange chip and execute actions according to service requirements.

Description

technical field [0001] The present invention relates to the technical field of SDH network communication, in particular to a multi-level through protection device and method for cascade equipment applied to SDH transmission. Background technique [0002] The information structure level adopted by SDH (SDH, synchronous digital system) is called synchronous transmission module STM-N (N=1, 4, 16, 64, 192, etc.), the most basic module is STM-1, and the most commonly used ones are 155Mbps and 622Mbps , 2.5Gbps, 10Gbps, 40Gbps or even 100Gbps transmission rate interface. SDH uses a block frame structure to carry information, and SDH frames must go through three steps: mapping, positioning and multiplexing. When data is transmitted based on the SDH format, the link layer protocol, frame format, CRC checksum and FLAG (flag bit of the frame relay load type) of the data interface must be strictly consistent. When the serial device adopts the traditional cut-through protection mechan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/16H04Q11/00
CPCH04J3/1611H04Q11/0005H04Q11/0062H04Q2011/0007
Inventor 何赞园王凯马宏李星吉立新朱宇航刘树新李英乐冯志峰刘友辉
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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