CN100483973C - Service switch-in protecting device - Google Patents
Service switch-in protecting device Download PDFInfo
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- CN100483973C CN100483973C CN 200310121265 CN200310121265A CN100483973C CN 100483973 C CN100483973 C CN 100483973C CN 200310121265 CN200310121265 CN 200310121265 CN 200310121265 A CN200310121265 A CN 200310121265A CN 100483973 C CN100483973 C CN 100483973C
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Abstract
This invention discloses a business access protector used in SDH/SONET transmission equipment, which contains interface unit, process unit and control unit wherein the interface unit is connected with process unit through control unit consisting of exchange controller for sending relative route control signal according business pass way state of interface unit and process unit, route controller for scheduling the interface unit received business signal to relative process unit to be processed. Said invention is benefit to intelligent control the business protection.
Description
Technical field
The present invention relates to the service protection device in telecommunication service field, refer to a kind of service access protective device that can be used for SDH (Synchronous Digital Hierarchy)/Synchronous Optical Network (SDH/SONET) transmission equipment especially.
Background technology
At present, the SDH/SONET optical transport network is used widely in the communications field.The SDH/SONET transmission equipment generally all can insert the service signal of different rates, then described service signal is encapsulated or other processing, change transmission path through professional the intersection again, make service signal finally can be delivered to its destination, realize the transmission of data.Because it is higher to be linked into the service signal speed of SDH/SONET transmission equipment, generally from 1.5M to 155M, 10M is to 100M, even GE (gigabit Ethernet) business.Professional kind comprises audio frequency, image, data etc.; these service signals all are very important; if do not adopt Redundancy Design; the path of these service signal processes is if during hardware and software failure; business will be interrupted, and realizes on the SDH/SONET transmission equipment that therefore to the access part of these business and the protection of processing section be very important.
With reference to shown in Figure 1; prior art SDH/SONET optical transport network realizes that service access and processing relate generally to interface unit 11 and processing unit 12; also comprise control unit 13 in addition; adapter unit 14 and backup units 15 are used for service protection; wherein the function of interface unit 11 is a service access; signal drives; professional switching etc.; the function of processing unit 12 and backup units 15 is the processing to service signal; the function of adapter unit 14 is professional switching; promptly the business of need protection is switched to backup units 15; the function of control unit 13 is switching services control, promptly through professional switching controls is carried out in the judgement of processing unit and backup units quality.
Under normal circumstances, service signal through the motherboard service bus, arrives processing unit 12 by interface unit 11, finishes the processing of service signal.If certain processing unit 11 breaks down; fault message passes to control unit 13 by communication bus; control unit 13 is detecting under the intact situation of backup units 15; professional two-stage through interface unit 11 and processing unit 12 is switched; switch to stand-by unit 15 and handle, and after fault processing unit is changed, if control unit 13 is found processing unit 12 functional rehabilitations; then the business of stand-by unit 15 is switched to processing unit 12, at this moment the system restoration protective capability.
There is following shortcoming in prior art:
1, because service bus is fixedly connected when the initial configuration business, the every road business that inserts by the interface unit service channel can only insert the fixedly fixed service passage processing of processing unit by fixing service bus, and business configuration is fixed;
If the service channel number of the actual connection of 2 interface units is smaller or equal to the service channel number of processing unit, the service channel of processing unit remainder will be wasted, can not be utilized again, and owing to need special stand-by unit to be used for redundant configuration, the cost that redundant configuration caused is higher;
3, control unit can only switch to stand-by unit with business when the processing unit fault, and the service dispatching pattern is single, can not carry out professional freely dispatching;
4, interface unit is generally active device, in case damage, forms the Single Point of Faliure of system easily, and business can not be protected.
Summary of the invention
In order to solve the fixing shortcoming that consequently can not effectively utilize system resource of prior art business configuration, the invention provides a kind of service access protective device, adopt this apparatus system reliability higher, the system synthesis cost is lower.
According to service access protective device provided by the invention, comprise interface unit, processing unit and control unit, described interface unit links to each other with described processing unit by control unit, and described control unit comprises:
Exchange control unit is used for sending the respective paths control signal according to interface unit and processing unit service channel state;
Path controller is used for according to described path control signal the service signal dispatching that interface unit inserts being arrived corresponding processing unit processes.
Wherein, described exchange control unit comprises:
Communication bus is used for coffret unit and processing unit status signal and path control signal;
Control module is used to obtain the interface unit and the processing unit status signal of communication bus transmission, and produces corresponding path control signal.
In addition, described path controller comprises that a plurality of primes select the receipts unit along separate routes, and a plurality of interchangers and a plurality of backs level choosing are along separate routes received the unit, described prime select along separate routes receive unit, interchanger and back level along separate routes choosing receive a unit and all link to each other with exchange control unit, wherein:
Described prime is selected the receipts unit along separate routes, is used for the corresponding service signal that the first path control signal routing reception interface unit according to described exchange control unit transmits;
Described interchanger is used for according to the second path control signal of described exchange control unit the service signal that the prime branching unit receives being carried out interconnection;
Described back level choosing is along separate routes received the unit, is used for according to the Third Road footpath control signal of described exchange control unit the cross-coupled service signal of operation exchange device being routed to respective handling unit business passage.
Best, described control unit adopts 1+1 or 1:1 redundancy protecting.
Best, described processing unit service channel sum is greater than interface unit service channel sum.
Compared with prior art, the present invention has the following advantages:
1, business configuration is flexible.Compared with prior art, the present invention adjusts to corresponding processing unit processes by path controller flexibly with the business that interface unit inserts, and compares with the professional fixed configurations of prior art, and flexibility is higher.
2, resource utilization ratio height.Owing to regulate access service and respective handling unit thereof by path controller, can overcome the problem that prior art interface unit service channel sum is total less than the processing unit service channel so that processing unit exuberant traffic passage is wasted.
3, the control unit function is complete, helps the Based Intelligent Control of service protection.Control unit is only realized the professional switching controls of the active and standby usefulness of processing unit in the prior art, control unit is not only realized the active and standby switching controls of using among the present invention, further can realize professional freely dispatching between each processing unit, when certain bar service channel of certain processing unit breaks down, switch to other idle traffic channel transfers by control unit, control unit is multiple functional, and is intelligent higher.
4, compared with prior art, the present invention also has the advantage that is not prone to Single Point of Faliure.The active devices such as drive circuit of interface unit being realized service access among the present invention are adjusted in the control unit, therefore, when interface unit damages, the Single Point of Faliure that occurs easily in the prior art can not occur.
Description of drawings
Fig. 1 is that prior art service access protection system is formed schematic diagram;
Fig. 2 is that service access protective device of the present invention is formed schematic diagram;
Fig. 3 is that control unit is realized the business reorganization principle schematic in the service access protective device of the present invention;
Fig. 4 is that exchange control unit shown in Figure 2 is formed schematic diagram;
Fig. 5 is that path controller shown in Figure 2 is formed schematic diagram;
Fig. 6 is a service access protective device embodiment service dispatching schematic diagram of the present invention.
Embodiment
The core of service access protective device of the present invention is to realize the freedom or the fixed schedule of service access.Compared with prior art, it improves mainly at control section, i.e. Ye Wu access control to reach the purpose that not only realizes the service access protection but also rationally utilize system resource, describes with specific embodiment below.
Fig. 2 is that service access protective device specific embodiment of the present invention is formed schematic diagram.
The service access protective device comprises with the lower part in the present embodiment: interface unit 21, processing unit 22 and control unit 23, wherein said interface unit 21 links to each other with processing unit 22 by control unit 23.Clearer in order to illustrate, suppose interface unit 21 N pieces (N is a natural number) altogether, processing unit 23 is M pieces (M is a natural number) altogether, totally two and realize 1+1 or the 1:1 redundancy protecting of control units 22, the function declaration that each unit is realized is as follows:
In the present embodiment, service signal is given control unit 23 through interface unit 21, and control unit 23 is also given interface unit 21 service signal simultaneously, as shown in Figure 2, interface unit 21 can be made up of N piece veneer, and each interface unit comprises a plurality of service channels, can insert/export the multichannel business.
In the present embodiment during set handling unit 22; the service channel sum that requires processing unit 22 is greater than interface unit 21 service channel sums (the service channel sum that is M piece processing unit is greater than the total way of N piece interface unit access service signal); when guaranteeing the whole access service signal of interface unit 21; when some service channel of processing unit 22 or certain processing unit integral body were unavailable, business can be protected.
Put under the situation the total way of service signal that equals N interface unit access when M the treatable service channel sum of processing unit at full configuration, at this moment also need a special back-up processing unit, with as standby service channel supplier.
Certainly,, so just can save service channel and veneer resource, reduce equipment cost if the interface unit 21 actual total ways of service signal that insert just not necessarily need a stand-by unit specially less than the service channel sum of processing unit 22.
Optimize, for certain business, the incoming traffic signal is preferably on the identical service channel with the outgoing traffic signal and transmits.Therefore, when the incoming traffic signal path is adjusted among the present invention, the outgoing traffic signal path is followed the incoming traffic signal path and is done the switching of corresponding business passage, when control unit 23 paths are adjusted, by relevant device,, the outgoing traffic signal path is done the corresponding business passage switch as cross unit etc., guarantee the identical services passage of input and output signal at same processing unit, system design will be simpler like this.
When the master uses the control unit fault; can give standby control unit with the communication bus transmission information between control unit and standby control unit by main; make standby control unit transfer the main cell operation of using to; and the master of fault transfers standby control unit to control unit, with 1+1 or the 1:1 protection that realizes control unit 23.
Go on to say control unit 23 of the present invention, also with reference to figure 2, described control unit 23 can further comprise exchange control unit 231 and path controller 232, wherein
Described exchange control unit 231 links to each other with processing unit 22 with described interface unit 21 respectively, is used for sending the respective paths control signal according to the service channel state of described interface unit 21 and processing unit 22;
In order to realize professional freely dispatching or fixed schedule, can be according to information such as the corresponding service port number of interface unit 21 and processing unit 22 and idle conditions, take certain algorithm to dispatch, for example 4 tunnel service accesses are arranged as interface unit, processing unit has the disposal ability of 6 tunnel business, after system carries out the initial service configuration, configuration data (information such as service channel number that comprise used processing unit) is preserved, in system work process, if detect the service channel fault of certain processing unit that has disposed, then find and do not use and service channel that function is intact by corresponding software, produce corresponding path control signal by exchange control unit 231, so that the service signal dispatching that inserts is handled to the corresponding service passage of respective handling unit.
In addition, described path controller 232, link to each other with described interface unit 21, processing unit 22 and above-mentioned exchange control unit 231 respectively, the path control signal that is used for transmitting according to exchange control unit 231 is handled the service signal dispatching that interface unit inserts to the corresponding service passage of respective handling unit 22.
Cite a plain example the cardinal principle of control unit 23 in the service access protective device of the present invention is described; with reference to figure 3; signal 1 is 1 road service signal that inserts by interface unit; processing unit 1 comprises service channel 1 and service channel 2; processing unit 2 comprises service channel 3 and service channel 4; to the service channel 1 of handling unit 1,4 of the service channels of processing unit 2 are taken by other service signals by control unit 23 initial configuration for signal 1.When service channel 1 breaks down, exchange control unit 231 detects service channel 1 fault, then produce a path control signal and give path controller 232 according to certain algorithm, by path controller 232 service signal of service channel 1 is transferred to other service channels, as service channel 2, or the service channel of other unit, as the service channel 3 of processing unit 2.
The service access configuration is fixing compared to existing technology; in case break down; service protection can only switch to the whole business on the fault processing unit on the stand-by unit; among the present invention when breaking down; by exchange control unit 231 controls; by path controller 232 scheduling, the service signal dispatching that inserts can be arrived arbitrary idle traffic passage processing of processing unit arbitrarily, system resource utilization is higher.
Further instruction is with reference to figure 4, in the present embodiment, exchange control unit 231 shown in Figure 2 can be made up of communication bus 2311 and control module 2312, and wherein said communication bus 2311 is used for coffret unit 21 and processing unit 22 status signals and path control signal; Described control module 2312, link to each other with described communication bus 2311, be used for producing corresponding path control signal according to certain dispatching algorithm according to the interface unit 21 and processing unit 22 status signals of communication bus 2311 transmission, during actual enforcement, described control module 2312 can be made of CPU and corresponding software module.
In addition, with reference to figure 5, in the present embodiment, the described path controller 232 of Fig. 2 can select receipts unit 2321, a plurality of interchanger 2322 and a plurality of back levels choosing receipts along separate routes unit 2323 to constitute by a plurality of primes along separate routes, wherein said prime is selected along separate routes and is received unit 2321, link to each other with described exchange control unit 231 with described interface unit 21, be used for the service signal that the first path control signal routing reception interface unit according to described exchange control unit 231 transmits;
Described interchanger 2322 selects receipts unit 2321 to link to each other with described exchange control unit 231 with described prime along separate routes, is used for selecting the service signal of receiving unit 2321 receptions to carry out interconnection along separate routes prime according to the second path control signal of described exchange control unit 231;
Back level choosing is along separate routes received unit 2323, link to each other with described exchange control unit 231 with described interchanger 2322, be used for the corresponding service passage that interchanger 2322 cross-coupled service signals are routed to the respective handling unit being handled according to the Third Road footpath control signal of described exchange control unit 231.
Lifting an example below describes, with reference to figure 6, in the present embodiment, path controller comprises that 3 primes select the receipts unit along separate routes, 3 interchanger (A interchangers, the B interchanger, the C interchanger) and after 3 level along separate routes choosing receive the unit, exchange control unit 231 comprises control module and three road communication bus ACBUS that link to each other with described control module, BCBUS and CCBUS, control module is by communication bus ACBUS and A interchanger, receive the prime branching unit of T1 signal, the back level of output D1 signal connects the unit along separate routes, by communication bus BCBUS and B interchanger, receive the prime branching unit of T2 signal, the back level of output D2 signal connects the unit along separate routes, by communication bus CCBUS and C interchanger, receive the prime branching unit of T3 signal, the back level of output D3 signal connects the unit along separate routes.
The core of control module is a microprocessor, it receives interface unit and the processing unit state information of obtaining by associated bus lines, move corresponding software module on it then, described software module produces corresponding path control signal according to certain dispatching algorithm, and corresponding path control signal is passed to communication bus ACBUS, BCBUS and CCBUS receives with the shunt choosing of control service signal.
Inserting signal with three the road is example, the service signal T1 that comes by interface unit, T2, T3, after control unit corresponding signal interface (signaling interface does not illustrate at Fig. 6) is delivered to path controller, at first deliver to prime and select the receipts unit along separate routes, select along separate routes in this prime and to receive that every road signal can be divided into three the tunnel in the unit, give three interchangers respectively, each interchanger can select wherein one the tunnel, then this road signal be divided into again three the tunnel give the back level along separate routes choosing receive the unit, level choosing receipts along separate routes unit, back is selected wherein one the tunnel to give the corresponding service bus, the service signal that inserts and handle after output is handled through signal is D1 like this, D2, D3.Above-mentioned processing controls mode also is the same in the rightabout control of signal.
Wherein, which service signal is the back level of A interchanger, the prime branching unit that receives the T1 signal, output D1 signal select by control signal control in corresponding path among the communication bus ACBUS in the unit along separate routes; Which service signal is the back level of B interchanger, the prime branching unit that receives the T2 signal, output D2 signal unit along separate routes select by control signal control in corresponding path among the communication bus BCBUS; Which service signal is the back level of C interchanger, the prime branching unit that receives the T3 signal, output D3 signal unit along separate routes select by control signal control in corresponding path among the communication bus CCBUS, and the generation of these path control signals to be control modules by exchange control unit produce according to certain dispatching algorithm.
The above only is the preferred embodiments of the present invention, and is non-so promptly limit to interest field of the present invention, and the equivalence that all utilizations specification of the present invention and accompanying drawing content are done changes, and all reason is with being contained in the claim scope of the present invention.
Claims (5)
1, a kind of service access protective device; be applied to the SDH/SONET transmission equipment, described service access protective device comprises interface unit, processing unit and control unit, it is characterized in that; described interface unit links to each other with described processing unit by control unit, and described control unit comprises:
Exchange control unit is used for sending the respective paths control signal according to interface unit and processing unit service channel state;
Path controller is used for according to described path control signal the service signal dispatching that interface unit inserts being arrived corresponding processing unit processes.
2, according to the described service access protective device of claim 1, it is characterized in that described exchange control unit comprises:
Communication bus is used for coffret unit and processing unit status signal and path control signal;
Control module is used to obtain the interface unit and the processing unit status signal of communication bus transmission, and produces corresponding path control signal.
3, according to claim 1 or 2 described service access protective devices; it is characterized in that; described path controller comprise a plurality of primes select along separate routes receive unit, a plurality of interchanger and a plurality of backs level along separate routes choosing receive the unit; described prime selects receipts unit, interchanger and level choosing receipts along separate routes unit, back all to link to each other with exchange control unit along separate routes, wherein:
Described prime is selected the receipts unit along separate routes, is used for the corresponding service signal that the first path control signal routing reception interface unit according to described exchange control unit transmits;
Described interchanger is used for according to the second path control signal of described exchange control unit the service signal that the prime branching unit receives being carried out interconnection;
Described back level choosing is along separate routes received the unit, is used for according to the Third Road footpath control signal of described exchange control unit the cross-coupled service signal of operation exchange device being routed to respective handling unit business passage.
According to the described service access protective device of claim 3, it is characterized in that 4, described control unit adopts 1+1 or 1:1 redundancy protecting.
According to the described service access protective device of claim 4, it is characterized in that 5, described processing unit service channel sum is greater than interface unit service channel sum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310121265 CN100483973C (en) | 2003-12-17 | 2003-12-17 | Service switch-in protecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310121265 CN100483973C (en) | 2003-12-17 | 2003-12-17 | Service switch-in protecting device |
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| Publication Number | Publication Date |
|---|---|
| CN1630223A CN1630223A (en) | 2005-06-22 |
| CN100483973C true CN100483973C (en) | 2009-04-29 |
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| CN 200310121265 Expired - Fee Related CN100483973C (en) | 2003-12-17 | 2003-12-17 | Service switch-in protecting device |
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| CN103186100B (en) * | 2011-12-31 | 2016-03-02 | 北京圣涛平试验工程技术研究院有限责任公司 | Redundancy guard system and method |
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