CN104660326A - High-speed and automatic SDH (synchronous digital hierarchy) switching method and device based on channel quality - Google Patents
High-speed and automatic SDH (synchronous digital hierarchy) switching method and device based on channel quality Download PDFInfo
- Publication number
- CN104660326A CN104660326A CN201510075999.0A CN201510075999A CN104660326A CN 104660326 A CN104660326 A CN 104660326A CN 201510075999 A CN201510075999 A CN 201510075999A CN 104660326 A CN104660326 A CN 104660326A
- Authority
- CN
- China
- Prior art keywords
- alarm
- data
- circuit
- extension wire
- status information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a high-speed and automatic SDH (synchronous digital hierarchy) switching method and device based on channel quality. The method specifically comprises steps as follows: Step 1) receiving line data at a client line receiving end, reproducing the line data into two ways, and sending the two ways to a main line sending end and a standby line sending end respectively in parallel; Step 2) acquiring data received by a main line and a standby line, comparing quality conditions of the two ways of received data in real time, and selecting and transmitting one superior way of data to a client line sending end.
Description
Technical field
The invention belongs to Internet communication field, relate to the High-Speed Automatic changing method of a kind of SDH based on channel quality and device.
Background technology
Existing SDH linear network protected mode mainly contains two kinds: one is that OLP equipment carries out circuit automatic switching protection, and another kind utilizes the protection handoff functionality of transmission equipment self to realize route protection.
Existing OLP technology mainly comprises two kinds of modes: 1: 1 protection and 1+1 protection, and we are described with 1+1 protection citing here.
1+1 protection technology is the protected mode that a kind of concurrent choosing is received, and fundamental diagram is shown in accompanying drawing 1.In this resist technology; light signal completes the division of light ratio example automatically in inside via source interface arrangement; and be sent in the middle of terminal receiving system according to this ratio by port device is two-way; the light signal that terminal receiving system can come transmission channel transmission equally carries out power detection; and choose wherein power stability targetedly and passage bridge is carried out on the more superior road of transmitting optical signal, and then high-quality light signal is selectively made to enter in the transmission storage device in whole transmission system downstream.
OLP equipment is switched by detection line optical power control; do not switch according to the quality condition of circuit own; (line quality is no problem will to cause overprotection like this; but luminous power reaches switches thresholding and switches) or (degradation has appearred in line quality, but luminous power does not reach threshold value and do not switch) under proteciton situation.
When transmission equipment protection switches, meeting automatic inspection line road quality, switches according to circuit alarm error code status.But transmission equipment protection switches implementation generally comprises Control card and business board; business board real-time detection line alarm error code status; if report Control card when judging that alarm or error code appear in circuit, Control card determines whether carry out circuit switching, and issues switching command.Can not switch in time when so just causing circuit to occur error code, switching time is longer.
Summary of the invention
Technical problem to be solved by this invention is monitored based on to circuit alarm error code status, provides the High-Speed Automatic changing method of a kind of SDH based on channel quality and device.
It is as follows that the present invention solves the problems of the technologies described above taked technical scheme:
The High-Speed Automatic changing method of SDH based on channel quality, comprising:
Step 1) receive the track data that customer line receiving terminal transmits, and track data is copied as two-way transmitted in parallel, be sent to primary circuit transmitting terminal and extension wire transmitting terminal respectively;
Step 2) obtain primary circuit and extension wire reception data, compare two-way in real time and receive quality of data situation, select a preferably circuit-switched data to be delivered to customer line transmitting terminal.
Further, preferred method is, step 2) in, specifically comprise: obtain primary circuit and extension wire reception data, and carry out frame alignment and parsing respectively;
Alarm and Error detection are carried out to frame alignment and the data after resolving, and forms alarm status information and error code status information;
According to described error code status information, calculate the error rate in real time; According to the error rate after calculating and alarm status information, a preferably circuit-switched data is selected to be delivered to customer line transmitting terminal.
Further, preferred method is, alarm and Error detection, the following arbitrary or combination of main detection: LOS, LOF, MS-AIS, AU-AIS alarm and B1, B2, B3 error code.
Further, preferred method is, according to the error rate after calculating and alarm status information, selects a preferably circuit-switched data to be delivered to customer line transmitting terminal, specifically comprises:
A) primary circuit and extension wire all do not receive alarm and error code, do not switch;
B) current current use line receives alarm, and another circuit no alarm, perform switching;
C) primary circuit and extension wire all receive alarm, do not switch;
D) primary circuit and extension wire all do not receive alarm, when the current current use line reception error rate is greater than another circuit, perform switching;
E) primary circuit and extension wire all do not receive alarm, and two circuit error rates are consistent, do not switch.
Further, step 1), specifically comprise:
Receive customer line receiving terminal track data and carry out SDH Frame location and parsing, formed and export corresponding control and marking signal;
Alarm and Error detection are carried out to frame alignment and the data after resolving, and forms alarm status information and error code status information;
Customer line being received data Replica is two-way, and passes to primary circuit transmitting terminal and extension wire transmitting terminal respectively.
The High-Speed Automatic switching device shifter of SDH based on channel quality, comprising:
Data Concurrent unit, for the track data that receiving lines receiving terminal transmits, and copies as two-way transmitted in parallel by track data, is sent to primary circuit transmitting terminal and extension wire transmitting terminal respectively;
Circuit switching unit, for according to primary circuit and extension wire quality condition, selects a preferably road to receive data and is delivered to customer line transmitting terminal.
Further, preferably, specifically comprise:
Frame synchronization unit, is respectively used to obtain primary circuit and extension wire reception data, and carries out frame alignment and parsing respectively;
Alarm Error detection unit, is respectively used to carry out alarm and Error detection to frame alignment and the data after resolving, and forms alarm status information and error code status information;
Error rate calculation unit, according to described error code status information, calculates the error rate in real time;
Described auto-changeover control unit, is further used for the error rate after according to calculating and alarm status information, and announcement trunk switch unit selects a preferably circuit-switched data to be delivered to customer line transmitting terminal.
Further, preferably, described alarm Error detection unit, the following arbitrary or combination of main detection: LOS, LOF, MS-AIS, AU-AIS alarm and B1, B2, B3 error code.
Further, preferably, described auto-changeover control unit, according to the error rate after calculating and alarm status information, announcement trunk switch unit selects a preferably road feedback data to be delivered to circuit transmitting terminal, specifically comprises:
A) primary circuit and extension wire all do not receive alarm and error code, do not switch;
B) current current use line receives alarm, and another circuit no alarm, perform switching;
C) primary circuit and extension wire all receive alarm, do not switch;
D) primary circuit and extension wire all do not receive alarm, when the current current use line reception error rate is greater than another circuit, perform switching;
E) primary circuit and extension wire all do not receive alarm, and two circuit error rates are consistent, do not switch.
Further, preferably, described frame synchronization unit, is further used for the track data receiving the transmission of customer line receiving terminal, carries out SDH Frame location and parsing, and formed and export corresponding control and marking signal;
Described alarm Error detection unit, for carrying out alarm and Error detection to frame alignment and the data after resolving, and forms alarm status information and error code status information;
Described Data Concurrent unit, copies as two-way by customer line receiving terminal track data, and passes to primary circuit transmitting terminal and extension wire transmitting terminal respectively.
After this invention takes such scheme, by monitoring circuit alarm error code status, effectively avoid overprotection and situation under proteciton, and, carry out line quality analysis judgement and auto-changeover control in real time based on FPGA, substantially increase switch speed.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in detail, to make above-mentioned advantage of the present invention definitely.Wherein,
Fig. 1 is the schematic diagram of prior art;
Fig. 2 is the schematic flow sheet of the High-Speed Automatic changing method of SDH that the present invention is based on channel quality;
Fig. 3 is the structural representation of an embodiment of the High-Speed Automatic changing method of the SDH based on channel quality of one embodiment of the invention;
Fig. 4 is the structural representation of the High-Speed Automatic switching device shifter of SDH that the present invention is based on channel quality;
Fig. 5 is the application scenarios schematic diagram of an embodiment of the High-Speed Automatic switching device shifter of SDH that the present invention is based on channel quality;
Fig. 6 is the application scenarios schematic diagram of an embodiment of the High-Speed Automatic switching device shifter of SDH that the present invention is based on channel quality.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical problem whereby, and the implementation procedure reaching technique effect can fully understand and implement according to this.It should be noted that, only otherwise form conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other, and the technical scheme formed is all within protection scope of the present invention.
In addition, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
Wherein, the english abbreviation that the present invention relates to and Chinese thereof are explained as follows:
SDH:(Synchronous Digital Hierarchy, SDH (Synchronous Digital Hierarchy)), define according to ITU-T related advisory, for the transmission of the digital signal of friction speed provides corresponding message structure, comprise multiplexing method and mapping method, and a technical system of related synchronization method composition.
FPGA:(Field-Programmable Gate Array), i.e. field programmable gate array;
LOS: Received Loss Of Signal;
LOF:SDH LOF;
MS-AIS:SDH Multiplex Section AIS;
AU-AIS:SDH higher order path alarm indication signal;
OLP: Optical Line Protection
Embodiment one:
As shown in Figure 2, the invention provides the High-Speed Automatic changing method of a kind of SDH based on channel quality, specifically, the method mainly comprises the following steps:
Step 1) receive the track data that customer line receiving terminal transmits, and track data is copied as two-way transmitted in parallel, be sent to primary circuit transmitting terminal and extension wire transmitting terminal respectively;
Step 2) obtain primary circuit and extension wire reception data, compare two-way in real time and receive quality of data situation, select a preferably circuit-switched data to be delivered to customer line transmitting terminal.
After this invention takes such scheme, by monitoring circuit alarm error code status, effectively avoid overprotection and situation under proteciton, and, carry out line quality analysis judgement and auto-changeover control in real time based on FPGA, substantially increase switch speed.
Embodiment two:
Continue to be described in detail above embodiment, wherein, as shown in Figure 3, in above step 2, be mainly concerned with upstream data, specifically, its step comprises:
Obtain primary circuit and extension wire reception data, and carry out frame alignment and parsing respectively;
Alarm and Error detection are carried out to frame alignment and the data after resolving, and forms alarm status information and error code status information;
According to described error code status information, calculate the error rate in real time; According to the error rate after calculating and alarm status information, a preferably circuit-switched data is selected to be delivered to customer line transmitting terminal.
Wherein, in the embodiment above, alarm and Error detection, arbitrary or combination below main detection: LOS, LOF, MS-AIS, AU-AIS alarm and B1, B2, B3 error code, specifically, LOS, LOF, MS-AIS, AU-AIS alarm and B1, B2, B3 error code are that SDH transmits some comparatively conventional error codes and alarm mode, and it specifically defines can participate in pertinent literature, does not describe in detail at this.
Further, preferred method is, according to the error rate after calculating and alarm status information, selects a preferably road feedback data to be delivered to circuit transmitting terminal, specifically comprises:
A) primary circuit and extension wire all do not receive alarm and error code, do not switch;
B) current current use line receives alarm, and another circuit no alarm, perform switching;
C) primary circuit and extension wire all receive alarm, do not switch;
D) primary circuit and extension wire all do not receive alarm, when the current current use line reception error rate is greater than another circuit, perform switching;
E) primary circuit and extension wire all do not receive alarm, and two circuit error rates are consistent, do not switch.
In addition, in step 1) in, what relate generally to is downlink data transmission, specifically comprises:
Receive customer line receive data and carry out SDH Frame location and parsing, formed and export corresponding control and marking signal;
Alarm and Error detection are carried out to frame alignment and the data after resolving, and forms alarm status information and error code status information;
Customer line being received data Replica is two-way, and passes to primary circuit transmitting terminal and extension wire transmitting terminal respectively.
Embodiment three:
Be described in detail in conjunction with specific embodiments, specifically, existing OLP technology is by detecting the luminous power size after light splitting judge line quality to receiving optical signals light splitting, thus realizes switching controls.Obviously, simple sensed light signal can bring a lot of problem, mainly as follows:
1) can, to original circuit insertion loss, line quality be caused to worsen after light splitting.
2) circuit overprotection is caused.OLP realizes circuit automatic switchover by detecting received optical power size, not real-time detection line quality condition, this just may occur that the transmission quality of circuit own is no problem, and OLP detects that luminous power does not meet threshold requirement and switches, cause switching due to OLP mistake and causing line quality to worsen.
3) cause circuit under proteciton.OLP realizes circuit automatic switchover by detecting received optical power size, not real-time detection line quality condition, this just may occur that the transmission quality of circuit own occurs serious problems, and OLP does not switch because luminous power meets threshold requirement, cause causing circuit to go wrong because OLP does not switch in time.
In one embodiment of the invention, as shown in Figure 3, its major function is as follows:
1) all of the port data all need through optical module, and FPGA directly receives optical module data and to go forward side by side row relax.Ensure that line signal can carry out photoelectricity photo reversal after this device;
2) after customer side line-receiving data is delivered to FPGA, FPGA converts data to two-way transmitted in parallel, is sent to primary circuit transmitting terminal and extension wire transmitting terminal respectively.
3), after primary circuit and extension wire reception data are delivered to FPGA, the inner two-way that will automatically compare of FPGA receives quality of data situation, and control circuit switches, and a final selection preferably circuit-switched data is delivered to customer line transmitting terminal.
Wherein, this device automatic switchover core algorithm is realized by FPGA, and Fig. 4 is the structural representation of the High-Speed Automatic switching device shifter of the SDH based on channel quality being arranged at FPGA inside, and specifically, the High-Speed Automatic switching device shifter of a kind of SDH based on channel quality, comprising:
Data Concurrent unit, for the line signal that receiving lines transmitting terminal transmits, and is converted to two-way transmitted in parallel by line signal, is sent to primary circuit transmitting terminal and extension wire transmitting terminal respectively;
Circuit switching unit, for according to primary circuit and extension wire quality condition, selects a preferably road to receive data and is delivered to customer line transmitting terminal.
Further, preferably, specifically comprise:
Frame synchronization unit, is respectively used to obtain primary circuit and extension wire reception data, and carries out frame alignment and parsing respectively;
Alarm Error detection unit, is respectively used to carry out alarm and Error detection to frame alignment and the data after resolving, and forms alarm status information and error code status information;
Error rate calculation unit, according to described error code status information, calculates the error rate in real time;
Described auto-changeover control unit, is further used for the error rate after according to calculating and alarm status information, and announcement trunk switch unit selects a preferably circuit-switched data to be delivered to customer line transmitting terminal.
Further, preferably, described alarm Error detection unit, the following arbitrary or combination of main detection: LOS, LOF, MS-AIS, AU-AIS alarm and B1, B2, B3 error code.
Further, preferably, described auto-changeover control unit, according to the error rate after calculating and alarm status information, announcement trunk switch unit selects a preferably circuit-switched data to be delivered to customer line transmitting terminal, specifically comprises:
A) primary circuit and extension wire all do not receive alarm and error code, do not switch;
B) current current use line receives alarm, and another circuit no alarm, perform switching;
C) primary circuit and extension wire all receive alarm, do not switch;
D) primary circuit and extension wire all do not receive alarm, when the current current use line reception error rate is greater than another circuit, perform switching;
E) primary circuit and extension wire all do not receive alarm, and two circuit error rates are consistent, do not switch.
Further, preferably, described frame synchronization unit, is further used for the track data receiving the transmission of customer line receiving terminal, carries out SDH Frame location and parsing, and formed and export corresponding control and marking signal;
Described alarm Error detection unit, for carrying out alarm and Error detection to frame alignment and the data after resolving, and forms alarm status information and error code status information;
Described Data Concurrent unit, copies as two-way by customer line receiving terminal track data, and passes to primary circuit transmitting terminal and extension wire transmitting terminal respectively.
After this invention takes such scheme, by monitoring circuit alarm error code status, effectively avoid overprotection and situation under proteciton, and, carry out line quality analysis judgement and auto-changeover control in real time based on FPGA, substantially increase switch speed.
Embodiment four:
Wherein, according to above embodiment three and embodiment two, wherein, upstream data process (active/standby reception data send data processing to client)
1), after primary and backup line-receiving data enters FPGA, frame synchronization unit and circuit switching unit is sent to respectively.Frame synchronization unit carries out frame alignment and parsing to reception SDH data, and exports corresponding control and marking signal to subordinate's processing unit.The primary and backup reception data of circuit switching unit caches, and carry out track data automatic switchover according to the circuit switching mark that auto-changeover control unit provides, and data after switching are delivered to customer side circuit transmitting terminal;
2) alarm Error detection unit carries out alarm and Error detection to reception SDH data, comprises LOF, MS-AIS, AU-AIS alarm and B1, B2, B3 error code, and error code and alarm status are delivered to subordinate's processing unit;
3) error rate calculation unit receiving alarm Error detection unit export alarm and error code status information, calculate B1, B2, B3 error rate in real time, and error rate result be delivered to subordinate's processing unit;
4) state information such as error code and alarm that exports according to superordinate elements of auto-changeover control unit, more active/standby two-way circuit quality condition automatically, and produce circuit switching mark to bottom-ranked unit.Line quality pass judgment on and switching condition as follows:
A) primary circuit and extension wire all do not receive alarm and error code, represent that two line qualities are all better, do not switch;
B) current current use line receives alarm, and another circuit no alarm, represent that current current use line is second-rate, perform switching;
C) primary circuit and extension wire all receive alarm, represent that two line qualities are all poor, do not switch;
D) primary circuit and extension wire all do not receive alarm, when the current current use line reception error rate is greater than another circuit, represents that current current use line is second-rate, perform switching;
E) primary circuit and extension wire all do not receive alarm, and when two circuit error rates are consistent, represent that two line qualities are all poor, do not switch;
Downlink data process (customer side receives data to active/standby transmission data processing)
1), after customer side line-receiving data enters FPGA, frame synchronization unit and Data Concurrent unit is sent to respectively.Frame synchronization unit realizes SDH Frame location and resolves, and exports corresponding control and marking signal to subordinate's processing unit.It is two-way that Data Concurrent unit realizes customer side to receive data Replica, and is sent to primary circuit transmitting terminal and extension wire transmitting terminal respectively;
2) alarm Error detection unit carries out alarm and Error detection to reception SDH data, comprises LOF, MS-AIS, AU-AIS alarm and B1, B2, B3 error code, is mainly used in monitoring customer side line receiver quality condition in real time;
Further, this device is mainly used in linear network protection, can used aloned or two pairing uses.
1) single assembly operation instruction figure as shown in Figure 4, is mainly used in the original circuit of client and comprises active/standby two circuits, utilize automatic switching control equipment to carry out preferentially two circuits, and select a preferably circuit to be sent to customer side;
Two pairing operation instruction figure as shown in Figure 5, can utilize automatic switching control equipment to set up primary and backup circuit, realize linear network defencive function.
The present invention has following effect:
1. real-time monitoring circuit quality condition, and compare two line qualities in real time and automatically switch, really accomplish preferentially to switch, ensured that transmission quality is improved after circuit switching.Efficiently solve and switch according to luminous power the overprotection and problem under proteciton that bring;
2. light signal is by meeting after this device through light electro-optic conversion, and light signal realizes having chance with transmission, effectively solves the loss problem that original OLP equipment brings;
3. this device adopts FPGA to realize circuit switching control, and switch speed is fast.
It should be noted that, for said method embodiment, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the application is not by the restriction of described sequence of movement, because according to the application, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action and module might not be that the application is necessary.
Those skilled in the art should understand, the embodiment of the application can be provided as method, system or computer program.Therefore, the application can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.
And the application can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1., based on the High-Speed Automatic changing method of SDH of channel quality, comprising:
Step 1) receive customer line receiving terminal track data, and track data is copied as two-way transmitted in parallel, be sent to primary circuit transmitting terminal and extension wire transmitting terminal respectively;
Step 2) obtain primary circuit and extension wire reception data, and compare two-way reception quality of data situation in real time, select a preferably circuit-switched data to be delivered to customer line transmitting terminal.
2. the High-Speed Automatic changing method of the SDH based on channel quality according to claim 1, is characterized in that, step 2) in, specifically comprise: obtain primary circuit and extension wire reception data, and carry out frame alignment and parsing respectively;
Alarm and Error detection are carried out to frame alignment and the data after resolving, and forms alarm status information and error code status information;
According to described error code status information, calculate the error rate in real time; According to the error rate after calculating and alarm status information, select a preferably road to receive data and be delivered to customer line transmitting terminal.
3. the High-Speed Automatic changing method of the SDH based on channel quality according to claim 2, is characterized in that, alarm and Error detection, the following arbitrary or combination of main detection: LOS, LOF, MS-AIS, AU-AIS alarm and B1, B2, B3 error code.
4. the High-Speed Automatic changing method of the SDH based on channel quality according to Claims 2 or 3, is characterized in that, according to the error rate after calculating and alarm status information, selects a preferably road to receive data and is delivered to customer line transmitting terminal, specifically comprise:
A) primary circuit and extension wire all do not receive alarm and error code, do not switch;
B) current current use line receives alarm, and another circuit no alarm, perform switching;
C) primary circuit and extension wire all receive alarm, do not switch;
D) primary circuit and extension wire all do not receive alarm, when the current current use line reception error rate is greater than another circuit, perform switching;
E) primary circuit and extension wire all do not receive alarm, and two circuit error rates are consistent, do not switch.
5. the High-Speed Automatic changing method of the SDH based on channel quality according to claim 1, is characterized in that, step 1), specifically comprise:
Receive customer line receiving terminal track data and carry out SDH Frame location and parsing, formed and export corresponding control and marking signal;
Alarm and Error detection are carried out to frame alignment and the data after resolving, and forms alarm status information and error code status information;
Be two-way by customer line receiving lines data Replica, and pass to primary circuit transmitting terminal and extension wire transmitting terminal respectively.
6., based on the High-Speed Automatic switching device shifter of SDH of channel quality, comprising:
Data Concurrent unit, for receiving customer line receiving terminal track data, and being converted to two-way transmitted in parallel by track data, being sent to primary circuit transmitting terminal and extension wire transmitting terminal respectively;
Circuit switching unit, for according to primary circuit and extension wire quality condition, selects a preferably road to receive data and is delivered to customer line transmitting terminal.
7. the High-Speed Automatic switching device shifter of the SDH based on channel quality according to claim 6, is characterized in that, specifically comprise:
Frame synchronization unit, is respectively used to obtain primary circuit and extension wire reception SDH data, and carries out frame alignment and parsing respectively;
Alarm Error detection unit, is respectively used to carry out alarm and Error detection to frame alignment and the data after resolving, and forms alarm status information and error code status information;
Error rate calculation unit, according to described error code status information, calculates the error rate in real time;
Described auto-changeover control unit, is further used for the error rate after according to calculating and alarm status information, and announcement trunk switch unit is selected a preferably road to receive data and is delivered to customer line transmitting terminal.
8. the High-Speed Automatic switching device shifter of the SDH based on channel quality according to claim 7, is characterized in that, described alarm Error detection unit, the following arbitrary or combination of main detection: LOS, LOF, MS-AIS, AU-AIS alarm and B1, B2, B3 error code.
9. the High-Speed Automatic switching device shifter of the SDH based on channel quality according to Claims 2 or 3, it is characterized in that, described auto-changeover control unit, according to the error rate after calculating and alarm status information, announcement trunk switch unit selects a preferably road feedback data to be delivered to circuit transmitting terminal, specifically comprises:
A) primary circuit and extension wire all do not receive alarm and error code, do not switch;
B) current current use line receives alarm, and another circuit no alarm, perform switching;
C) primary circuit and extension wire all receive alarm, do not switch;
D) primary circuit and extension wire all do not receive alarm, when the current current use line reception error rate is greater than another circuit, perform switching;
E) primary circuit and extension wire all do not receive alarm, and two circuit error rates are consistent, do not switch.
10. the High-Speed Automatic switching device shifter of the SDH based on channel quality according to claim 6, it is characterized in that, described frame synchronization unit, be further used for the track data receiving the transmission of customer line receiving terminal, carry out SDH Frame location and parsing, and formed and export corresponding control and marking signal;
Described alarm Error detection unit, for carrying out alarm and Error detection to frame alignment and the data after resolving, and forms alarm status information and error code status information;
Described Data Concurrent unit, copies as two-way by customer line receiving terminal track data, and passes to primary circuit transmitting terminal and extension wire transmitting terminal respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510075999.0A CN104660326A (en) | 2015-02-13 | 2015-02-13 | High-speed and automatic SDH (synchronous digital hierarchy) switching method and device based on channel quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510075999.0A CN104660326A (en) | 2015-02-13 | 2015-02-13 | High-speed and automatic SDH (synchronous digital hierarchy) switching method and device based on channel quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104660326A true CN104660326A (en) | 2015-05-27 |
Family
ID=53251075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510075999.0A Pending CN104660326A (en) | 2015-02-13 | 2015-02-13 | High-speed and automatic SDH (synchronous digital hierarchy) switching method and device based on channel quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104660326A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915280A (en) * | 2016-07-05 | 2016-08-31 | 中国电子科技集团公司第三十四研究所 | Simulation signal optical fiber communication system with hot backup and use method thereof |
| CN106714209A (en) * | 2016-12-15 | 2017-05-24 | 上海埃威航空电子有限公司 | AIS base station virtual navigation mark broadcast monitoring system and method |
| CN107613147A (en) * | 2017-09-26 | 2018-01-19 | 北京荣达千里科技有限公司 | A kind of special telephone line device for intelligently switching, test system and method for testing |
| CN108513212A (en) * | 2018-02-12 | 2018-09-07 | 深圳市易科声光科技有限公司 | Switch the method and device of voice-grade channel in a kind of operational process |
| CN110995336A (en) * | 2019-11-15 | 2020-04-10 | 武汉光迅信息技术有限公司 | OLP transmission link switching method and device, storage medium and OLP |
| CN113825042A (en) * | 2020-06-18 | 2021-12-21 | 深圳市中兴微电子技术有限公司 | Data access method, device, chip and computer storage medium |
| CN113872791A (en) * | 2020-06-30 | 2021-12-31 | 虫极科技（北京）有限公司 | Network control method, store network system and computer readable storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010046074A1 (en) * | 2000-05-25 | 2001-11-29 | Sunao Kakizaki | Protection switching apparatus for 1 + 1 optical transmission lines |
| CN1395382A (en) * | 2002-07-26 | 2003-02-05 | 北京邮电大学 | Line protection reverse method in high-speed parallel optical transmission system |
| CN1477797A (en) * | 2002-08-23 | 2004-02-25 | 华为技术有限公司 | Method for implementing quick optical fibre protective inversion in ring network and its equipment |
| CN101005318A (en) * | 2007-01-23 | 2007-07-25 | 中国联合通信有限公司 | Judging method and system for starting protection conversion system in light network |
| CN202282779U (en) * | 2011-10-27 | 2012-06-20 | 武汉光迅科技股份有限公司 | Optical cable jumper wire device |
| CN103780302A (en) * | 2012-10-19 | 2014-05-07 | 京信通信系统（中国）有限公司 | Control link switching method and device and RRU in double fiber transmission system |
| CN104202205A (en) * | 2014-09-26 | 2014-12-10 | 烽火通信科技股份有限公司 | Method and device for realizing service protection within board card |
-
2015
- 2015-02-13 CN CN201510075999.0A patent/CN104660326A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010046074A1 (en) * | 2000-05-25 | 2001-11-29 | Sunao Kakizaki | Protection switching apparatus for 1 + 1 optical transmission lines |
| CN1395382A (en) * | 2002-07-26 | 2003-02-05 | 北京邮电大学 | Line protection reverse method in high-speed parallel optical transmission system |
| CN1477797A (en) * | 2002-08-23 | 2004-02-25 | 华为技术有限公司 | Method for implementing quick optical fibre protective inversion in ring network and its equipment |
| CN101005318A (en) * | 2007-01-23 | 2007-07-25 | 中国联合通信有限公司 | Judging method and system for starting protection conversion system in light network |
| CN202282779U (en) * | 2011-10-27 | 2012-06-20 | 武汉光迅科技股份有限公司 | Optical cable jumper wire device |
| CN103780302A (en) * | 2012-10-19 | 2014-05-07 | 京信通信系统（中国）有限公司 | Control link switching method and device and RRU in double fiber transmission system |
| CN104202205A (en) * | 2014-09-26 | 2014-12-10 | 烽火通信科技股份有限公司 | Method and device for realizing service protection within board card |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915280A (en) * | 2016-07-05 | 2016-08-31 | 中国电子科技集团公司第三十四研究所 | Simulation signal optical fiber communication system with hot backup and use method thereof |
| CN106714209A (en) * | 2016-12-15 | 2017-05-24 | 上海埃威航空电子有限公司 | AIS base station virtual navigation mark broadcast monitoring system and method |
| CN106714209B (en) * | 2016-12-15 | 2020-02-14 | 上海埃威航空电子有限公司 | AIS base station virtual navigation mark broadcasting monitoring system and method |
| CN107613147A (en) * | 2017-09-26 | 2018-01-19 | 北京荣达千里科技有限公司 | A kind of special telephone line device for intelligently switching, test system and method for testing |
| CN107613147B (en) * | 2017-09-26 | 2020-10-16 | 北京荣达千里科技有限公司 | Intelligent switching device, testing system and testing method for private telephone line |
| CN108513212A (en) * | 2018-02-12 | 2018-09-07 | 深圳市易科声光科技有限公司 | Switch the method and device of voice-grade channel in a kind of operational process |
| CN110995336A (en) * | 2019-11-15 | 2020-04-10 | 武汉光迅信息技术有限公司 | OLP transmission link switching method and device, storage medium and OLP |
| CN113825042A (en) * | 2020-06-18 | 2021-12-21 | 深圳市中兴微电子技术有限公司 | Data access method, device, chip and computer storage medium |
| WO2021253999A1 (en) * | 2020-06-18 | 2021-12-23 | 中兴通讯股份有限公司 | Data access method and apparatus, chip and computer storage medium |
| CN113872791A (en) * | 2020-06-30 | 2021-12-31 | 虫极科技（北京）有限公司 | Network control method, store network system and computer readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104660326A (en) | High-speed and automatic SDH (synchronous digital hierarchy) switching method and device based on channel quality | |
| KR102429793B1 (en) | Radiocommunication infrastructure for a railway signaling system of the cbtc type | |
| CN101145930B (en) | Method, system and device for guaranteeing reliable transmission of multicast service | |
| CN104579770A (en) | Method and device for managing data transmission channels | |
| US20140258772A1 (en) | Utilizing backward defect indications in y-cable protection switching | |
| US20100128611A1 (en) | Transmitting apparatus, alarm control method, and computer product | |
| CN102801467A (en) | Device and method for implementing dual optical fiber protection switching based on ONU | |
| US8593941B2 (en) | Method for implementing permanent ring network protection in an MESH network | |
| CN112218321B (en) | Master-slave link switching method, device, communication equipment and storage medium | |
| CN116232986A (en) | Path protection method and network node | |
| CN105790965A (en) | Method and device for link switching and line card | |
| CN103490921A (en) | Method and device for protecting network, copying node and system | |
| CN105847028A (en) | Optical transport network management method and network equipment for executing same | |
| CN107948000B (en) | Method, device and system for switching main channel and standby channel | |
| CN104779994B (en) | The guard method of ethernet passive optical network and device | |
| CN101895797A (en) | Method and device for realizing all-fiber protection | |
| CN115549774B (en) | Optical signal processing method, device, chip, system and medium | |
| CN115549775B (en) | Processing method for optical signal transmission abnormality, optical transmission equipment and system | |
| CN114499738A (en) | Method, device and system for controlling transmission of top-adjusting signal and multi-channel optical module | |
| CN103650421A (en) | 1+1 end-to-end bidirectional switching method, system and node | |
| CN104219068A (en) | Method of channel fault notification and network equipment | |
| CN101667863B (en) | Device and method for enhancing channel alarm triggering in multiplex section shared ring net protection | |
| US11800262B2 (en) | Service path switching method and related device | |
| CN103716106A (en) | Clock synchronization method, system and apparatus | |
| US7035262B1 (en) | Software-based emulation of single SONET path layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |
|
| WD01 | Invention patent application deemed withdrawn after publication |