CN100558030C - The implementation method of clock subnet in a kind of transmission network management system - Google Patents

Abstract

The implementation method of clock subnet in a kind of transmission network management system of the present invention, it may further comprise the steps: a) the upper strata webmaster passes through NE-level network management system access module to obtaining lower floor's network management information, the clock tracing information of the single network element that is obtained by lower floor is saved into the right form of clock tracing network element, and deposits database module in; B) during search clock subnet from the root network element, by to the right traversal of described clock tracing network element, from level to level search out whole clock tracing relation and clock subnet, and Search Results is saved in the database module.The inventive method is owing to introduce the notion of clock subnet, make the clock signal of whole network flow to very clear, when situations such as generation clock failure, clock switch, the attendant can view important informations such as the position of switching, affected network element intuitively from Clock view, make that positioning problems and corresponding speed are improved greatly.

Description

The implementation method of clock subnet in a kind of transmission network management system

Technical field

The clock synchronization that the present invention relates to a kind of synchronous digital hierarchy (SDH) or Synchronous Optical Network (SONET) concerns monitoring and managing method, particularly relates to the implementation method of clock subnet in the transmission network management system of a kind of synchronous digital hierarchy or Synchronous Optical Network.

Background technology

In digital communication system, the signal of transmission all is digitized pulse train.When these digital signal streams transmitted between digital local exchange installation, its speed must be consistent fully, and it is accurate that the ability guarantee information transmits, and this just is called " synchronously ".In digital transmission system, two kinds of Digital Transmission series are arranged, a kind of crying " PDH (Pseudo-synchronous Digital Hierarchy) " (Plesiochronous Digital Hierarchy) is called for short PDH; Another kind of " synchronous digital hierarchy " (the Synchronous Digital Hierarchy) that cry, be called for short SDH (because of SONET system and SDH similar, so just do not list separately).

The SDH technology is compared with the PDH technology, and following obvious advantage is arranged: 1, unified bit rate, unified interface standard is that interconnected the providing between devices from different manufacturers may.2, network management capabilities is strengthened greatly.3, the new ideas of self-healing network have been proposed.The looped network form of the self-healed protection ability of forming with SDH equipment that has can be recovered proper communication by self-healing network automatically when the transmission medium main signal is cut off.4, adopt byte multiple connection technology, making in the network up and down, tributary signal becomes very simple.Because SDH has above-mentioned remarkable advantage, it will become one of basic technology that realizes information superhighway.

The matter of utmost importance that will solve in the SDH net is the net stationary problem, because guarantee to make a start when sending digital pulse signal pulse is placed on (in the specific time slot) on the special time position, and receiving end is wanted and can this DISCHARGE PULSES EXTRACTION be understood to guarantee the proper communication of transmitting-receiving two-end at specific time location place, two ends are received/sent out in this assurance can the correct function of extraction/transmission information on a certain special time position then be to be realized by the timer clock of receiving/send out two ends, therefore, the supervision of clock signal and management are most important for the normal operation of whole SDH network.As shown in Figure 1, it is the synchronous schematic diagram of equipment side clock subnet, A, B, C, D are respectively the network element in the SDH net, A terminating multiplexer TM (TerminalMultiplexing) wherein, B, C, D are the add-drop multiplexer ADM (Add DropMultiplexer) that communication successively connects, wherein, B accepts main website external clock signal, it is synchronous that A and C carry out clock tracing to B respectively, and D carries out clock synchronization by following the tracks of the final and B of C, all the main website external clock is carried out synchronously with the clock that is implemented in the entire equipment side.

Clock information described in the SDH net mainly is meant the clock tracing relation, the clock tracing relation of a network element can dispose a plurality of, just a network element may obtain clock signal from a plurality of approach, but these clock tracing relations have priority, same network element of same time only can be followed the tracks of a clock signal, have only when present clock signal generation deterioration or network interruption, this network element just can change into follows the tracks of the lower network element signal of other priority, and this process just is clock switch.And the attendant pays close attention to most is exactly the situation of this clock switch, and other clock informations comprise clock quality, priority, direction etc., all is subordinated to the clock tracing relation.

The NE-level network management system is normally from the angle of single network element management clock signal in the prior art, and as shown in Figure 1, the user can manage the clock information of single network element, as check the clock tracing direction, clock quality is followed the tracks of essential informations such as priority, and can be carried out operations such as clock switch, locking.The relevant clock information of this mode can be directly obtains from the network element side, implements comparatively easyly, so all clock informations of each network element are quite clear, and the attendant to network comparatively is familiar with can locate some problems by the variation of relevant information.But this method mainly realizes in the NE-level management system, is that the clock information at single network element manages, and can not the clock of whole network be managed, and its limitation is conspicuous; Prior art is had in mind from single network element, uses the form of expression of literal form, thereby makes clock information lack globality and intuitive, and its expression ratio is more obscure, only has the attendant of suitable maintenance experience could use it to solve relevant issues.

Progressively proposed the notion of Clock view in the part NE-level network management system of prior art or the sub-network level network management system, this class network management system has realized independent Clock view, user's relevant clock information of all network elements as can be seen in this Clock view.This scheme has adopted graphical expression way, and the interface is friendly more than first kind of mode, can find out the clock information of all network elements on a view intuitively.Though this kind mode has been introduced the Clock view notion, but the clock information of all network elements all is presented on the same view, and the clock tracing relation that just each network element that shows is independent on this angle, is not still considered the clock transmission from the angle of whole network.All clock tracing relation (different priorities) of same network element by simultaneously be presented at clock the time figure when going up, show will be very numerous and disorderly, the attendant may understand rapidly current clock tracing relation by Clock view, and clock tracing important information such as whether have problems.

As mentioned above, obviously there is defective in prior art, and awaits improving and invention.

Summary of the invention

The object of the present invention is to provide the implementation method of clock subnet in a kind of transmission network management system, by setting up clock subnet view, and to the selectivity sign of clock tracing relation, the management that overcomes clock information is obscure based on single network element, performance, check inconvenience and be unfavorable for the defective of the aspects such as location solution of clock problem.

Technical scheme of the present invention is:

The implementation method of clock subnet in a kind of transmission network management system, it may further comprise the steps:

A) to obtaining lower floor's network management information, the clock tracing information of the single network element that is obtained by lower floor is saved into the right form of clock tracing network element to the upper strata webmaster, and deposits database module in by NE-level network management system access module;

From the root network element,, search out whole clock tracing relation and clock subnet from level to level when b) searching for the clock subnet, then Search Results is saved in the database module by to the right traversal of described clock tracing network element; Described clock subnet is be made of network element and described clock tracing relation one the not tree network structure of Cheng Huan; Described network element is meant the network element that clock signal source is provided in the described clock subnet; Described clock tracing network element is to being to be made of with paired form the clock source that network element and this network element are followed the tracks of.

Search Results is presented in the graphical interfaces, and in demonstration, between network element, shows the clock tracing relation of different directions with different signs; It is acquiescence clock tracing relation and present clock tracking relationship that the clock tracing of described different directions closes; Described acquiescence clock tracing relation is the clock subnet view of the clock tracing relation under user's normal condition of preserving; Described present clock tracking relationship is the clock subnet view of real time reaction network present clock tracking relationship.

Described method, wherein said method also comprises step:

C) when interface module is initiated query requests, clock tracing relation and the clock subnet preserved in the reading of data library module.

Described method, wherein said interface module are interface display module.

Described method, wherein the search clock subnet described in the step b) is based on Multiplex Section Termination circuit or regenerator section circuit or physical fiber.

The implementation method of clock subnet in a kind of transmission network management system that this invention provided, owing to adopt clock subnet view to whole network, introduce the notion of clock subnet, make the clock signal of whole network flow to very clear, when situations such as generation clock failure, clock switch, the attendant can view important informations such as the position of switching, affected network element intuitively from Clock view, make that positioning problems and corresponding speed are improved greatly.

Description of drawings

Fig. 1 is that the clock tracing of the equipment side of prior art concerns schematic diagram;

Fig. 2 is the system configuration schematic diagram of the implementation method of clock subnet in the described transmission network management system of the present invention;

Fig. 3 is the clock subnet view of a preferred embodiment of the implementation method of clock subnet in the transmission network management system of the present invention.

Embodiment

Core content of the present invention is: introduce notions such as clock subnet, acquiescence tracking relationship, current tracking relationship: the clock subnet is the key concept of the inventive method, different with existing subnet notion, here be not to be connected by link between the network element, this clock subnet is network element is connected and composed by the clock tracing relation as basic element one the not tree network structure of Cheng Huan.Present clock tracking relationship: the i.e. clock subnet view of real time reaction network present clock tracking relationship; Acquiescence clock tracing relation: the i.e. clock subnet view of the clock tracing relation under the normal condition of user's preservation.The root network element is meant the root network element of described clock subnet, is the source of clock signal in the whole clock subnet, refers generally to follow the tracks of that network element of external clock reference or internal clock source.External clock reference (bits isochronon signal source) is mainly divided in the clock source, internal clock source (the crystal oscillator oscillator signal that network element oneself is inner), line clock source (promptly referring to follow the tracks of the clock signal of other network elements), other (tributary clock sources etc.).

The implementation method of clock subnet in a kind of transmission network management system of the present invention at first needs correct single network element clock tracing relation information, can directly obtain from network element or lower floor's webmaster; And the correct Multiplex Section Termination circuit that has searched out, can finish by corresponding search module.Above acquisition process can obtain from prior art, does not therefore add and gives unnecessary details.

Each process step of the implementation method of clock subnet in the transmission network management system of the present invention below is described:

Step 1: the present clock trace information of the single network element that is obtained by lower floor at first is saved into present clock and follows the tracks of the right form of network element.Can find its upstream network element NE2 for following the tracks of line clock according to already present multiplex section circuit as: certain network element NE1 is current, then write down present clock follow the tracks of network element to for (NE1, NE2); Think then that for following the tracks of external clock or internal clock source this network element is the root network element as this upstream network element NE2 is current, and the record present clock is followed the tracks of network element to being (NE2 ,-1).

Step 2: during search clock subnet from the root network element, based on the Multiplex Section Termination circuit, according to correct clock information and ms link information, by to following the tracks of the right traversal of network element, the whole clock tracing that searches out from level to level concerns and the clock subnet, as above the relation of the clock tracing in the example is :-1-＞NE2-＞NE1 is saved in Search Results in the database module then, and shows by corresponding graphical interfaces technology.

Described above is the searching algorithm of present clock subnet, it is right that system also can preserve different clock tracing network elements at the different needs of user in addition, thereby generate different clock subnets, as concerning that by preserving the acquiescence clock tracing network element is to generating acquiescence tracking clock subnet.

The basic implementation pattern of network level webmaster is as shown in Figure 2 in the implementation method of clock subnet in the transmission network management system of the present invention, the upper strata webmaster passes through NE-level network management system EMS access module to obtaining lower floor's network management information, physical data according to EMS is obtained, and concerns as clock tracing; Again by the correlation function module, comprising network management system clock search module the back is accepted or rejected, is revised, put in order to information and be saved in database module by the standard database operation-interface, and the module of notifying all in running, to need to know the clock tracing relation information in due course, as the graphical interfaces module.Be meant in the time of suitable when other interface modules (as interface module) are initiated query requests, when just having started such as the interface, when perhaps directly clicking the inquiry inlet on the interface, because the result of the inventive method search will be stored in the database, have only other modules (as interface module, perhaps other needs the module of processing clock information) when filing a request, could acquired information.Simultaneously because what write down in the database is Word message, what the network element, the root network element that comprise as the clock subnet be, tracking relationship how, and interface module can be converted into figure to these Word messages and shows.

When the attendant opens Clock view of the present invention interface, what represent is a network structure of being made up of network element and arrow, a specific embodiment as shown in Figure 3, wherein single solid arrow closes and is for acquiescence clock tracing relation, diagram acquiescence clock tracing: external clock reference-＞NE15-＞NE18-＞NE17-＞NE16; Hollow arrow is the present clock tracking relationship, and illustrated present clock tracking relationship is: external clock reference-＞NE15-＞NE16-＞NE17-＞NE18; Clock switch has taken place in the inconsistent explanation of present clock tracking relationship and acquiescence clock tracing relation, diagram is switched former because NE15 arrives the clock signal deterioration of NE18, the reason of clock signal deterioration may be that NE15 has broken to NE18 optical fiber, therefore be clearly shown that the clock signal of whole network flows away to information, the attendant can save as acquiescence clock tracing relation to the relation of the clock tracing under the normal condition.When the physical device clock signal is switched, clock subnet view interface can represent that respectively the clock tracing of giving tacit consent to concerns and current clock tracing relation with different arrows at the place of switching, when the attendant finds to have occurred different arrows on the Clock view, just can know and clock switch occur at once, as shown in Figure 3 can the open-and-shut NE16 of finding out and NE17 between and clock switch has taken place between NE17 and the NE18, and can recognize particular location of switching and the Useful Informations of switching such as direction from the arrow variation, even therefore also can find that clock tracing concerns and clock is switched situation and Primary Location problem place in the very first time to the uncomprehending attendant of underlying device.

Need to prove, the searching algorithm of the implementation method of clock subnet is based on being described of Multiplex Section Termination circuit in the described transmission network management system of the present invention, also can consider under special circumstances based on regenerator section circuit even physical fiber or other available circuits.With the Multiplex Section Termination circuit is that the basis is because in the standard of SDH, clock information is to be placed in the byte of multiplex section, and the inventive method by link and network element to searching out a clock subnet, so if the present invention also is essentially identical mode with other links, as being the basis of being searched with links such as regenerator sections.

Clock subnet notion and searching algorithm have only been described in the embodiment of the invention; and relevant additional function on this basis also belongs to the category of the present invention protection: as preserve the clock tracing relation of each time period; by clock subnet direct intervention clock tracing direction; as artificial clock switch: the user can choose the network element that needs from Clock view; the menu inlet that provides by right mouse button issues to be forced to make it follow the tracks of the order in other clock sources; this order meeting is issued to actual network element by the present interfaces protocol technology, thereby changes the clock tracing direction of actual network element.

Should be understood that, concerning those of ordinary skills of the present invention, can be according to above-mentioned specific embodiment change of the present invention or distortion, and all these changes or distortion all should belong to the protection range of claims of the present invention.

Claims (4)

1, the implementation method of clock subnet in a kind of transmission network management system is characterized in that may further comprise the steps:

A) to obtaining lower floor's network management information, the clock tracing information of the single network element that is obtained by lower floor is saved into the right form of clock tracing network element to the upper strata webmaster, and deposits database module in by NE-level network management system access module;

From the root network element, by to the right traversal of described clock tracing network element, search out whole clock tracing relation and clock subnet from level to level, and Search Results is saved in the database module when b) searching for the clock subnet; Described clock subnet is be made of network element and described clock tracing relation one the not tree network structure of Cheng Huan; Described network element is meant the network element that clock signal source is provided in the described clock subnet; Described clock tracing network element is to being to be made of with paired form the clock source that network element and this network element are followed the tracks of;

Search Results is presented in the graphical interfaces, and in demonstration, between network element, shows the clock tracing relation of different directions with different signs; It is acquiescence clock tracing relation and present clock tracking relationship that the clock tracing of described different directions closes; Described acquiescence clock tracing relation is the clock subnet view of the clock tracing relation under user's normal condition of preserving; Described present clock tracking relationship is the clock subnet view that reflects network present clock tracking relationship in real time.

2, the method for claim 1 is characterized in that described method also comprises step:

C) when interface module is initiated query requests, clock tracing relation and the clock subnet preserved in the reading of data library module.

3, method as claimed in claim 2 is characterized in that described interface module is an interface display module.

4, the method for claim 1 is characterized in that search clock described in the step b)

Net is based on Multiplex Section Termination circuit or regenerator section circuit or physical fiber.

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