CN101291160A - Backup system for microwave optical fiber link and backup method thereof - Google Patents
Backup system for microwave optical fiber link and backup method thereof Download PDFInfo
- Publication number
- CN101291160A CN101291160A CNA2008100284046A CN200810028404A CN101291160A CN 101291160 A CN101291160 A CN 101291160A CN A2008100284046 A CNA2008100284046 A CN A2008100284046A CN 200810028404 A CN200810028404 A CN 200810028404A CN 101291160 A CN101291160 A CN 101291160A
- Authority
- CN
- China
- Prior art keywords
- microwave
- optical fiber
- link
- backup
- communication
- 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
Images
Abstract
The invention discloses a microwave optical fiber link standby system, which comprises a microwave communication link and an optical fiber communication link. The microwave communication link and the optical fiber communication link are arranged in parallel; the two ends thereof are connected with commutation circuits respectively; the commutation circuits are connected with an ADM (add and drop multiplexer) circuit respectively; the microwave communication link and the optical communication link are mutually standby links. The microwave optical fiber link standby system has the advantages of reliable link standby, fast commutation, simple commutation logic, low standby cost and integrated circuit, can meet the needs of high, medium and low capacity communication transmission, and is applicable for the digital transmission system of other standby links.
Description
Technical field
The present invention relates to the link backup technology in the communication system, particularly a kind of microwave optical fiber link backup system and backup method thereof.
Background technology
In order to guarantee communication quality and communication reliability better, in digital communication system, often adopt the backup method at present, promptly except the master of normal transmission information with the working equipment, also has stand-by equipment, in case the master breaks down with active channel or the error rate surpasses certain threshold value, promptly switches to stand-by equipment.The backup mode of communication adopts the 1+1 backup or the network backup of equipment usually at present, and the former is based on same transmission medium, and the latter is Network Based.
Link backup based on same transmission medium often adopts the 1+1 backup mode, with the microwave transmission be example application mode as shown in Figure 1, two microwave communications link by modulator (MOD) successively with send letter machine (TX), antenna, connect receiver (RX), demodulator (DEM) is connected compositions, the two ends of two microwave communications link respectively with switch the electrical equipment back formation standby system that is connected.These two links are in the same transmission environment in the practical application, perhaps optical fiber is in same trench or the pipeline, therefore the simultaneity probability that is subjected to influences such as physical property destruction, external interference is very big, shared risk group (Shared Risk Group has so just appearred, SRG), the link backup reliability is low, the backup cost height.
Based on network link backup method can solve the SRG problem; with the looped network backup is the application mode optical networking as shown in Figure 2 of example; during operate as normal; raw information is directly transmitted to the communication link between the purpose communication network element at the initiation communication network element; when this communication link breaks down; because what adopt is mesh topology; by network from checkout equipment; network can be selected another link quickly; make a detour, through other intermediate communication network element information is passed to the purpose communication network element, the network under the ring-network topology is because the optical fiber between network element is walked different pipelines respectively; the problem that can not have SRG can provide than protection faster and switch simultaneously.Its shortcoming is: the ring-type that must formation can heal or netted, and backup cost is than higher; Because network backup relates to a plurality of nodes, the switchover policy more complicated, self-healing speed is less relatively.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, the microwave optical fiber link backup system that a kind of link backup is reliable, switching is rapid, switch logic is simple, backup cost is low, circuit is integrated is provided.
Another object of the present invention is to provide a kind of microwave optical fiber link backup method of realizing by above-mentioned microwave optical fiber link backup system.
Purpose of the present invention is achieved through the following technical solutions: a kind of microwave optical fiber link backup system, comprise microwave communications link, optic communication links, described microwave communications link and optic communication links are parallel to be provided with, two ends are connected with commutation circuit respectively, the commutation circuit at two ends is connected with the add drop multiplex circuit respectively, microwave communications link and the optic communication links link that backups each other.
Described commutation circuit is connected with logic control circuit respectively by microwave communication testing circuit, optical fiber communication testing circuit and forms back being connected with diverter switch.
This microwave optical fiber link backup system can become optical fiber communication configuration effort pattern or microwave indoor unit (IDU) configuration effort pattern by software arrangements.
Described microwave communications link also can comprise the two parallel microwave communication circuit that are connected, and constitutes the 1+1 backup of microwave communication.
A kind of microwave optical fiber link backup method that utilizes said system to realize comprises the steps:
(1) optic communication links is under the normal operating conditions, and the telex network input signal is successively by exporting user communications signals behind add drop multiplex circuit, commutation circuit, optic communication links, commutation circuit, the add drop multiplex circuit.
(2) break down or the error rate when deteriorating into threshold value when the optic communication links active channel, system passes through the commutation circuit switching signal to microwave communications link, signal is after microwave communications link, successively by exporting user communications signals behind commutation circuit, the add drop multiplex circuit.
Described commutation circuit is according to judging that the step of switching automatically is: when interruption or communication failure appearred in optical fiber, opposite end optical fiber communication testing circuit detected this fault message, and it is fed back to logic control circuit; Logic control circuit sends switch-over control signal to diverter switch; Diverter switch switches to the microwave communications link transmission with signal; Then successively by exporting user communications signals behind commutation circuit, the add drop multiplex circuit.
Described microwave optical fiber link backup system switching method switches or the not damaged switching for damage is arranged.
When described microwave communications link is the microwave communication 1+1 backup, when interruption or communication failure appear in optic communication links, the link backup system switches on the microwave 1+1 backup communication link, and microwave 1+1 backup communication link carries out the backup of microwave link by traditional microwave link backup implementation method.
Action principle of the present invention is: adopt the different transmission mediums with optical fiber of microwave to realize the link backup function, the general optical fiber that adopts communicates in the course of normal operation, and microwave communication is a backup path.When interruption or communication failure appearred in optical fiber, the optical fiber communication testing circuit in the commutation circuit of opposite end detected this fault condition, and backup path is switched to master channel, and the assurance user's communications is not interrupted, and perhaps can recover communication in very short break period.
System self-healing ability of the present invention is perfect, and the self-healing time is exceedingly fast, and switch logic is simple, and cost is low, reliability is very high.The present invention has following advantage and effect with respect to prior art:
(1) link backup of the present invention adopts two kinds of different media of microwave and optical fiber to realize, can not have the problem of the SRG of identical media link backup existence.
(2) with respect to network backup, backup method logic of the present invention is simple, and switch speed is faster, and reliability is higher.
(3) the present invention adopts microwave optical fiber communication link backup method, and the microwave communication circuit construction cost is lower, set up conveniently, strong interference immunity.
(4) system integration microwave communication circuit of the present invention, optical fiber communication circuit, commutation circuit and add drop multiplex circuit, device integrated level height, it is lower to be beneficial to installation and cost.
(5) the present invention can become other mode of operation by software arrangements: configuration of cells in optical fiber communication configuration, the microwave office, and the utilization rate of equipment and installations height, flexibility is good.
(6) commutation circuit can be switched for diminishing to hinder, and also can be designed to not damaged and switch, and applicability is better.
Description of drawings
Fig. 1 in the prior art based on the structural representation of the link backup that is all the microwave transmission media;
Fig. 2 is the link schematic diagram of looped network backup in the prior art;
Fig. 3 adopts the structural representation of an optic communication links, microwave communications link backup for system of the present invention;
Fig. 4 constitutes the structural representation of microwave communication 1+1 backup and optical fiber link standby system for system of the present invention;
Fig. 5 is the structural representation of system switching circuit of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
Present embodiment adopts the structure of an optic communication links, microwave communications link backup, specifically as shown in Figure 3, in this microwave optical fiber link backup system, microwave communications link and optic communication links are parallel to be provided with, two ends are connected with commutation circuit respectively, the commutation circuit at two ends is connected with the add drop multiplex circuit respectively, microwave communications link and the optic communication links link that backups each other.All kinds of standard speed signals such as STM, E1, ETH can be transmitted in this microwave optical fiber link backup system.
The microwave optical fiber link backup method that utilizes said system to realize comprises the steps: that the telex network input signal at first enters the add drop multiplex circuit of this system, enter commutation circuit then, signal sends optic communication links and microwave communications link simultaneously to, enter the optical fiber and the microwave communications link of opposite end then successively by optical fiber and microwave transmission, enter the commutation circuit (Figure 5 shows that the concrete structure of commutation circuit) of opposite end, at optical fiber is that the master is provided with under the situation with transmission, and commutation circuit is chosen on the optic communication links; Baseband signal after the switching is exported user communications signals after entering the add drop multiplex circuit; When interruption or communication failure appearred in optical fiber, opposite end optical fiber communication testing circuit detected this fault message, and it is fed back to logic control circuit, and logic control circuit sends switch-over control signal and gives diverter switch according to the strategy that sets in advance; Diverter switch switches to the microwave communications link transmission with signal; Then successively by commutation circuit, add drop multiplex circuit output user communications signals.
Embodiment 2
Present embodiment adopts the structure of microwave communication 1+1 backup and optical fiber link standby system, specifically as shown in Figure 4, this microwave optical fiber link backup system increases another microwave communications link on the basis of system shown in the embodiment 1, that is microwave communications link comprises the two parallel microwave communication circuit that are connected, formation microwave communication 1+1 backup and optical fiber link standby system.
The action principle of native system is: when interruption or communication failure appearred in optic communication links, the link backup system switched on the microwave 1+1 backup communication link.Microwave 1+1 backup communication link carries out the backup of microwave link by traditional microwave link backup implementation method.Have two microwave communications link among this embodiment, at some predispose to damage especially communication routing channels, reliability is stronger.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1, a kind of microwave optical fiber link backup system, it is characterized in that: comprise microwave communications link, optic communication links, described microwave communications link and optic communication links are parallel to be provided with, two ends are connected with commutation circuit respectively, the commutation circuit at two ends is connected with the add drop multiplex circuit respectively, microwave communications link and the optical communication link link that backups each other.
2, microwave optical fiber link backup according to claim 1 system is characterized in that: described commutation circuit is connected the back by microwave communication testing circuit, optical fiber communication testing circuit and is connected with diverter switch and forms with logic control circuit.
3, microwave optical fiber link backup according to claim 1 system, it is characterized in that: this microwave optical fiber link backup system is an optical fiber communication configuration effort pattern.
4, microwave optical fiber link backup according to claim 1 system, it is characterized in that: this microwave optical fiber link backup system is a configuration of cells mode of operation in the microwave office.
5, microwave optical fiber link backup according to claim 1 system is characterized in that: described microwave communications link comprises the two parallel microwave communication circuit that are connected, and constitutes the 1+1 backup of microwave communication.
6, a kind of microwave optical fiber link backup method that utilizes each described system of claim 1～5 to realize is characterized in that: comprise the steps:
(1) optic communication links is under the normal operating conditions, and the telex network input signal is successively by exporting user communications signals behind add drop multiplex circuit, commutation circuit, optic communication links, commutation circuit, the add drop multiplex circuit;
(2) break down or the error rate when deteriorating into threshold value when the optic communication links active channel, system passes through the commutation circuit switching signal to microwave communications link, signal is after microwave communications link, successively by exporting user communications signals behind commutation circuit, the add drop multiplex circuit.
7, microwave optical fiber link backup method according to claim 6, it is characterized in that: described commutation circuit is according to judging that the step of switching automatically is: when interruption or communication failure appear in optical fiber, opposite end optical fiber communication testing circuit detects this fault message, and it is fed back to logic control circuit; Logic control circuit sends switch-over control signal to diverter switch; Diverter switch switches to the microwave communications link transmission; Then successively by exporting user communications signals behind commutation circuit, the add drop multiplex circuit.
8, microwave optical fiber link backup method according to claim 6 is characterized in that: described microwave optical fiber link backup system switching method switches for damage is arranged.
9, microwave optical fiber link backup method according to claim 6 is characterized in that: described microwave optical fiber link backup system switching method is that not damaged switches.
10, microwave optical fiber link backup method according to claim 6, it is characterized in that: when described microwave communications link is the microwave communication 1+1 backup, when interruption or communication failure appear in optic communication links, the link backup system switches on the microwave 1+1 backup communication link, microwave 1+1 backup communication link carries out the backup of microwave link by traditional microwave link backup implementation method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100284046A CN101291160A (en) | 2008-05-30 | 2008-05-30 | Backup system for microwave optical fiber link and backup method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100284046A CN101291160A (en) | 2008-05-30 | 2008-05-30 | Backup system for microwave optical fiber link and backup method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101291160A true CN101291160A (en) | 2008-10-22 |
Family
ID=40035272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100284046A Pending CN101291160A (en) | 2008-05-30 | 2008-05-30 | Backup system for microwave optical fiber link and backup method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101291160A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951680A (en) * | 2009-07-10 | 2011-01-19 | 中兴通讯股份有限公司 | Link protection method and device thereof |
| CN102014000A (en) * | 2010-12-03 | 2011-04-13 | 中兴通讯股份有限公司 | E1/T1 branch protection method and device |
| CN105591772A (en) * | 2014-10-22 | 2016-05-18 | 中国移动通信集团公司 | Data transmission method and apparatus |
-
2008
- 2008-05-30 CN CNA2008100284046A patent/CN101291160A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951680A (en) * | 2009-07-10 | 2011-01-19 | 中兴通讯股份有限公司 | Link protection method and device thereof |
| CN102014000A (en) * | 2010-12-03 | 2011-04-13 | 中兴通讯股份有限公司 | E1/T1 branch protection method and device |
| CN105591772A (en) * | 2014-10-22 | 2016-05-18 | 中国移动通信集团公司 | Data transmission method and apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7724653B2 (en) | Transmission device and redundant configuration between transmission device and layer 2 switch | |
| CN101753397B (en) | System, method and device for rapidly self-healing Ethernet ring | |
| CN103001799B (en) | Method and node for achieving redundancy on basis of chain network | |
| CN101197634B (en) | Method, system and single board device for implementing automatic protection rearrangement of main and standby plate | |
| US20140258772A1 (en) | Utilizing backward defect indications in y-cable protection switching | |
| CN101958831B (en) | Ethernet ring network failure recovery method, Ethernet ring network and switching equipment | |
| JP2008160227A (en) | Network apparatus and communication system | |
| CN101141349A (en) | Protection method of transmission service | |
| GB2444170A (en) | Ethernet protection using a redundant link, with link up of a remote port being triggered using a "link status control mechanism". | |
| CN101340346A (en) | Ring control method and apparatus of Ethernet looped network system | |
| CN104393914A (en) | A multiplex route recovering method for an optical fiber differential protection device | |
| CN101262406A (en) | Two-way loop network system and its control method | |
| CN105790965A (en) | Method and device for link switching and line card | |
| CN101291160A (en) | Backup system for microwave optical fiber link and backup method thereof | |
| CN101764714A (en) | Channel failure reversing method, node and signal transmission system | |
| WO2012103696A1 (en) | Optical line transmission protection system and method | |
| CN102118266A (en) | Industrial Ethernet dual-link redundancy technology | |
| CN105634774A (en) | Method, service line card and system for recovering link communication | |
| CN110113258B (en) | Method and system for automatically protecting data surface link by using control surface link | |
| CN102148693B (en) | Shared granularity method, node and shared granularity system | |
| US8233791B2 (en) | Methods, systems, and computer readable media for providing virtual 1:N automatic protection switching (APS) and dynamic, in service configuration change for optical network interface equipment | |
| CN114095462B (en) | Fault-tolerant method and system for SRIO communication system of radar processor | |
| CN101667863B (en) | Device and method for enhancing channel alarm triggering in multiplex section shared ring net protection | |
| CN101141218B (en) | Protection switching system and method for wavelength division multiplexing load client network | |
| CN100515138C (en) | Transmission control method for wireless network and base station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20081022 |