CN101599824B - Method and system for realizing multilevel switching network global timing signal synchronization and switching network equipment - Google Patents
Method and system for realizing multilevel switching network global timing signal synchronization and switching network equipment Download PDFInfo
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- CN101599824B CN101599824B CN2008100983977A CN200810098397A CN101599824B CN 101599824 B CN101599824 B CN 101599824B CN 2008100983977 A CN2008100983977 A CN 2008100983977A CN 200810098397 A CN200810098397 A CN 200810098397A CN 101599824 B CN101599824 B CN 101599824B
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Abstract
The invention discloses a method and a system for realizing multilevel switching network global timing signal synchronization and switching network equipment. The method comprises the following steps: receiving a synchronous cell sent by global timing signal dispensing equipment; sending the synchronous cell to flow management equipment through a link between equipment and synchronizing the flow management equipment. The invention has the following advantages that the global timing signal synchronization operation of a whole switching network is triggered by the global timing signal dispensing equipment in the embodiment of the invention, the synchronous cell is sent to the flow management equipment in a multilevel switching network through the link between the equipment, and the link between the equipment is constructed when the multilevel switching network is established, therefore, the technical scheme cannot add the design cost of the multilevel switching network.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of switching network of multiple planes global timing mark synchronization method and system, switching network equipment.
Background technology
Switching network of multiple planes can be used for making up large-scale switching network.Switching network of multiple planes shown in Figure 1 comprises K plane, and each plane is by S1, and S2 and S3 three stage switching unit constitute, and wherein, S1 and S3 crosspoint can be realized in same switching network equipment.
As shown in Figure 1; Flow management apparatus (Traffic Manager; TM) cell that sends can arrive the purpose outlet through many feasible paths; This just causes belonging to the cell of same stream, promptly arrives the cell of same destination interface from same input port, when arriving destination interface, can have out of order phenomenon.
In order to make cell identical order when destination interface keeps with transmission, need sort again to cell at destination interface.At present, a kind of sort method commonly used is that TM stamps the overall markers with same reference benchmark for each cell when sending cell, can resequence to cell according to the markers that cell carries at destination interface.
Because each TM works alone; The above-mentioned mechanism that cell is sorted according to overall markers requires whole switching network of multiple planes that one cover overall markers synchronization mechanism regular or that irregularly move is arranged, to guarantee that the overall markers of all TM keeps synchronous in the switching network of multiple planes.
Existing switching network of multiple planes global timing mark synchronization method is the markers source of in switching network of multiple planes, setting; Be designated as the overall markers benchmark of entire switching network during markers source local; The markers source through and TM between private access; Markers is sent to TM, thereby the overall markers of accomplishing all TM is synchronous.
In research and practice process to prior art, the inventor finds that there is following problem in prior art:
In the existing switching network of multiple planes global timing mark synchronization method; The markers source need be set up with each TM and be exclusively used in the path that transmits time scale information, because TM quantity is various in the large-scale switching network of multiple planes, therefore; Set up private access and make that the design cost of switching network of multiple planes is very high; And,, thereby can cause the great wasting of resources because designated lane can only be used to transmit time scale information.
Summary of the invention
The technical problem that the embodiment of the invention will solve provides a kind of switching network of multiple planes global timing mark synchronization method and system, switching network equipment, can on the basis that does not increase design cost, realize that overall markers is synchronous.
For solving the problems of the technologies described above, switching network of multiple planes global timing mark synchronization method embodiment provided by the present invention realizes through following technical scheme:
The embodiment of the invention provides a kind of switching network of multiple planes global timing mark synchronization method, and said method comprises:
Receive the cipher chain synchronization that overall markers discharge device sends;
Send cipher chain synchronization to flow management apparatus through the equipment room link, synchronous said flow management apparatus;
Having K planar S 2 crosspoints at least is overall markers discharge device, and the cipher chain synchronization that then receives overall markers discharge device transmission comprises:
K planar S 1/3 crosspoint receives the cipher chain synchronization that overall markers discharge device sends;
Sending cipher chain synchronization to flow management apparatus through the equipment room link specifically comprises:
Said overall markers discharge device is main overall markers discharge device, and said switching network of multiple planes further comprises: at conplane subsequent use overall markers discharge device, then said method does not further comprise at least one and the overall markers discharge device of said master:
Said flow management apparatus sends cipher chain synchronization to coupled S1/3 crosspoint;
The said S1/3 crosspoint that links to each other with flow management apparatus sends the S2 crosspoint of cipher chain synchronization to the coupled subsequent use overall markers discharge device of conduct.
The embodiment of the invention provides another kind of switching network of multiple planes global timing mark synchronization method, and said method comprises:
Receive the cipher chain synchronization that overall markers discharge device sends;
Send cipher chain synchronization to flow management apparatus through the equipment room link, synchronous said flow management apparatus;
Having K planar S 1/3 crosspoint at least is said overall markers discharge device, and the cipher chain synchronization that then receives overall markers discharge device transmission specifically comprises:
K planar S 2 crosspoints receive the cipher chain synchronization that overall markers discharge device sends;
Sending cipher chain synchronization to flow management apparatus through the equipment room link specifically comprises:
Said K planar S 2 crosspoints send cipher chain synchronization to coupled K planar S 1/3 crosspoint;
K planar S 1/3 crosspoint that links to each other with K planar S 2 crosspoints sends cipher chain synchronization to coupled flow management apparatus.
The embodiment of the invention provides another switching network of multiple planes global timing mark synchronization method, and said method comprises:
Receive the cipher chain synchronization that overall markers discharge device sends;
Send cipher chain synchronization to flow management apparatus through the equipment room link, synchronous said flow management apparatus;
Having a flow management apparatus at least is said overall markers discharge device, and the cipher chain synchronization that then receives overall markers discharge device transmission comprises:
The one S1/3 crosspoint receives the cipher chain synchronization that overall markers discharge device sends;
Sending cipher chain synchronization to flow management apparatus through the equipment room link specifically comprises:
A said S1/3 crosspoint sends cipher chain synchronization to coupled S2 crosspoint;
Said S2 crosspoint sends cipher chain synchronization to the 2nd coupled S1/3 crosspoint;
Said the 2nd S1/3 crosspoint sends cipher chain synchronization to coupled flow management apparatus.
The embodiment of the invention also provides a kind of switching network of multiple planes overall situation markers synchro system, comprising: overall markers discharge device, switching network equipment;
Said overall markers discharge device is used to send cipher chain synchronization to coupled said switching network equipment;
Said switching network equipment is used for sending cipher chain synchronization to flow management apparatus through the equipment room link;
At least one K planar S 2 crosspoint is said overall markers discharge device, and the switching network equipment that then links to each other with said overall markers discharge device comprises: K planar S 1/3 crosspoint;
Said switching network equipment sends cipher chain synchronization to flow management apparatus through the equipment room link and comprises:
Said K planar S 1/3 crosspoint sends cipher chain synchronization to coupled flow management apparatus;
Said overall markers discharge device is main overall markers discharge device; Said switching network of multiple planes further comprises: at conplane subsequent use overall markers discharge device, said system does not further comprise: the flow management apparatus that links to each other with K planar S 1/3 crosspoint at least one and the overall markers discharge device of said master;
The said flow management apparatus that links to each other with K planar S 1/3 crosspoint sends cipher chain synchronization to coupled S1/3 crosspoint;
The S1/3 crosspoint that links to each other with the said flow management apparatus that links to each other with K planar S 1/3 crosspoint sends the S2 crosspoint of cipher chain synchronization to the coupled said subsequent use overall markers discharge device of conduct.
The embodiment of the invention also provides another kind of switching network of multiple planes overall situation markers synchro system, comprising: overall markers discharge device, switching network equipment;
At least one K planar S 1/3 crosspoint is said overall markers discharge device, and the switching network equipment that then links to each other with said overall markers discharge device comprises: K planar S 2 crosspoints;
Said K planar S 2 crosspoints send cipher chain synchronization to coupled K planar S 1/3 crosspoint;
Said K planar S 1/3 crosspoint that links to each other with K planar S 2 crosspoints sends cipher chain synchronization to coupled flow management apparatus.
The embodiment of the invention also provides another switching network of multiple planes overall situation markers synchro system, comprising: overall markers discharge device, switching network equipment;
At least one flow management apparatus is said overall markers discharge device, and the switching network equipment that then links to each other with said overall markers discharge device comprises: a S1/3 crosspoint;
A said S1/3 crosspoint sends cipher chain synchronization to coupled S2 crosspoint;
Said S2 crosspoint sends cipher chain synchronization to the 2nd coupled S1/3 crosspoint;
Said the 2nd S1/3 crosspoint sends cipher chain synchronization to coupled flow management apparatus.
Have following beneficial effect in the technique scheme:
In embodiments of the present invention; The overall markers simultaneous operation of entire switching network is triggered by overall markers discharge device; Because cipher chain synchronization is to be sent to the flow management apparatus in the switching network of multiple planes through the equipment room link; And the link that the equipment room link makes up when being the switching network of multiple planes networking, therefore, the technical scheme that the embodiment of the invention provides can not increase the design cost of switching network of multiple planes.
Description of drawings
Fig. 1 is existing switching network of multiple planes configuration diagram;
Fig. 2 forms sketch map for the switching network of multiple planes overall situation markers synchro system that first embodiment of the invention provides;
The switching network of multiple planes global timing mark synchronization method flow chart that Fig. 3 provides for first embodiment of the invention;
Fig. 4 forms sketch map for the switching network of multiple planes overall situation markers synchro system that second embodiment of the invention provides;
The switching network of multiple planes global timing mark synchronization method flow chart that Fig. 5 provides for second embodiment of the invention;
Fig. 6 forms sketch map for the switching network of multiple planes overall situation markers synchro system that third embodiment of the invention provides;
The switching network of multiple planes global timing mark synchronization method flow chart that Fig. 7 provides for third embodiment of the invention;
The composition sketch map of the switching network equipment that Fig. 8 provides for the embodiment of the invention.
Embodiment
For the purpose that makes the embodiment of the invention, technical scheme, and advantage clearer, below the technical scheme that the embodiment of the invention provides is elaborated with reference to accompanying drawing.
The switching network of multiple planes global timing mark synchronization method that the embodiment of the invention provides comprises: receive the cipher chain synchronization that overall markers discharge device sends; Send cipher chain synchronization to flow management apparatus through the equipment room link, synchronous said flow management apparatus.
The method that more than provides for the embodiment of the invention; The overall markers simultaneous operation of entire switching network is triggered by overall markers discharge device in the method; Because cipher chain synchronization is through the equipment room link, be sent to flow management apparatus in the switching network of multiple planes, and the link that the equipment room link makes up when being the switching network of multiple planes networking; Therefore, the technical scheme that provides of the embodiment of the invention can not increase the design cost of switching network.
Below in the practical application, the embodiment of the invention provides the concrete implementation procedure of method to describe in detail.
See also Fig. 2; Form sketch map for the switching network of multiple planes overall situation markers synchro system that first embodiment of the invention provides, this system comprises: overall markers discharge device and switching network equipment, and switching network equipment comprises: TM201, the S1/3 crosspoint 20K2 that reaches the first order and the S2 crosspoint 20K3 of intergrade; Wherein, K representes the sequence number on plane, said crosspoint place, such as, S1/3 crosspoint 2012 is the S1/3 crosspoints that are on switching network of multiple planes first plane.Square frame maximum among Fig. 2 is represented a plane, and each TM evenly is distributed to each plane with the flow of oneself.
In order to strengthen the synchronous reliability of overall markers, the overall markers discharge device that the embodiment of the invention provides comprises: main overall markers discharge device and subsequent use overall markers discharge device.
In practical application, can select the overall markers discharge device of any conduct in TM, S1/3 crosspoint, the S2 crosspoint, trigger the synchronous flow process of overall markers.
At first, be example with the S2 crosspoint as overall markers discharge device, the switching network of multiple planes global timing mark synchronization method that the embodiment of the invention is provided describes in detail.
See also Fig. 3, be the switching network of multiple planes global timing mark synchronization method flow chart that first embodiment of the invention provides, by the main overall markers discharge device of the 2013 ' conduct of any S2 crosspoint in first plane, this method comprises in this embodiment:
Step 301:S2 crosspoint 2013 ' is designated as benchmark during with this locality, and cycle or aperiodicity are sent cipher chain synchronization to coupled all of carrying self markers and path delay parameter or part S1/3 crosspoint 2012 wherein;
In embodiments of the present invention, cipher chain synchronization all is to be sent to the switching network equipment that each links to each other through the equipment room link, repeats no more.
Because cell transmits on the path and has delay; Synchronous in order to realize overall accurately markers; Also carried path delay parameter parameter in the cipher chain synchronization; With the error that the path delay parameter that remedies between switching network equipment causes, wherein the transmission delay of path delay parametric representation cell on the path is big or small.
In practical application, can adopt following mode configuration path delay parameter:
1, the wire length calculating path delay parameter between each switching network equipment that obtains according to manual measurement configuration, with the path delay parameter configuration in corresponding switching network equipment;
2, the transmit path delay parameter is measured cell, and this path delay parameter measurement cell is exclusively used in the path delay parameter of measuring between switching network equipment, and the path delay parameter that measures is kept in the corresponding switching network equipment.
It should be noted that in practical application, to the less demanding occasion of markers synchronous accuracy, also can not carry path delay in the cipher chain synchronization, do not influence the realization of the embodiment of the invention at some.
Step 302:S1/3 crosspoint 2012 upgrades self markers according to markers and path delay parameter that said cipher chain synchronization carries;
Step 303:S1/3 crosspoint 2012 sends cipher chain synchronization to the coupled S2 crosspoint 2013 that carries self markers and path delay parameter, and, coupled TM201;
Step 304:S2 crosspoint 2013 and TM201 upgrade self markers according to markers and path delay parameter that said cipher chain synchronization carries.
In embodiments of the present invention; It is synchronous that overall markers in the switching network of multiple planes is meant that synchronously all TM equipment is accomplished markers; Therefore, it is synchronous that step 301 to step 304 has been accomplished the overall markers of switching network of multiple planes shown in Figure 2, and guaranteed that the overall markers of all TM keeps synchronously among Fig. 2.
Further; The global timing mark synchronization method that first embodiment of the invention provides is to utilize the equipment room link to transmit cipher chain synchronization; In practical application; S2 crosspoint 2013 ' as main overall markers discharge device may break down, and perhaps problems such as link failure can appear in switching network of multiple planes, for the overall markers that under out of order situation, also can accomplish all TM equipment synchronous; The reliability of the global timing mark synchronization method that the enhancing embodiment of the invention provides; Can preestablish with S2 crosspoint 2013 ' and be in one or more S2 crosspoint with one-level as subsequent use overall markers discharge device, when S2 crosspoint 2013 ' breaks down or link failure occurs, the simultaneous operation of fast quick-acting pipe overall situation markers.
In practical application, subsequent use overall markers discharge device can adopt following dual mode work:
First kind of working method: main overall markers discharge device and subsequent use overall markers discharge device are all sending cipher chain synchronization simultaneously.Under normal circumstances, TM only is synchronized with main overall markers discharge device, if fault has appearred in some link; In the case, TM can select a subsequent use overall markers discharge device to carry out synchronously, such as; Be synchronized with the cipher chain synchronization that the maximum subsequent use overall markers discharge device of markers sends, so-called markers maximum just is meant the markers source of " running the most soon " in the system; Simultaneously; TM can send a request to control module, and main overall markers discharge device is reassigned in request, and control module is after receiving described request; From subsequent use overall markers discharge device, select one synchronously the subsequent use overall markers discharge device of all TM realized the reliable switching of active and standby overall markers discharge device as leading the overall markers simultaneous operation that overall markers discharge device is taken over whole switching network of multiple planes.In practical application, can in cell, carry this cell of corresponding information representation and send by main overall markers discharge device, still send by subsequent use overall markers discharge device.
Second kind of working method: seize isochronous resources for preventing main overall markers discharge device and subsequent use overall markers discharge device, subsequent use overall markers discharge device can send the cipher chain synchronization of oneself again after receiving cipher chain synchronization.
In first embodiment of the invention; If second kind of working method work that subsequent use overall markers discharge device has been stated according to preamble; And; When having at least one subsequent use overall markers discharge device and main overall markers discharge device not to belong to same plane, said method further comprises the step of following synchronized reserve overall situation markers point-score equipment:
Step 305:TM201 send carry self markers and path delay parameter cipher chain synchronization to S1/3 crosspoint 20K2 (i.e. S1/3 crosspoint 20K2 in the K plane, second plane to the) coupled and that be not synchronized;
Step 306:S1/3 crosspoint 20K2 upgrades the markers of self according to markers of carrying in the cipher chain synchronization and path delay parameter;
Can know by Fig. 2; Second the same S1/3 crosspoint to the K plane can receive the cipher chain synchronization that a plurality of TM201 send, for prevent same S1/3 crosspoint in the once time synchronization process by synchronous repeatedly, synchronization rules need be set on crosspoint in advance; This synchronization rules can be set according to system requirements by the technical staff; Such as, synchronization rules can be set at: crosspoint selects the maximum cipher chain synchronization of markers to carry out synchronously when receiving a plurality of cipher chain synchronization.The crosspoint that is provided with after the synchronization rules has possessed the ability of from a plurality of cipher chain synchronizations, distinguishing and select reasonable cipher chain synchronization, thereby has guaranteed that crosspoint can be not synchronous by repeatedly in the once time synchronization process.
Step 307:S1/3 crosspoint 20K2 send carry self markers and path delay parameter cipher chain synchronization to coupled S2 crosspoint 20K3;
Markers and path delay parameter that step 308:S2 crosspoint 20K3 carries according to cipher chain synchronization; Upgrade self markers, wherein, in order to guarantee the reliable synchronization of all TM; As the S2 crosspoint 20K3 of subsequent use overall markers discharge device accomplish self markers synchronously after; Further send carry self markers and path delay parameter cipher chain synchronization to coupled S1/3 crosspoint 20K2, S1/3 crosspoint 20K2 is coupled TM synchronously further, wherein; In order to prevent that TM is by repeatedly synchronous; Can preestablish by the synchronous TM of main overall markers discharge device and no longer be synchronized with subsequent use overall markers discharge device, not have only just to be synchronized with subsequent use overall markers discharge device, guarantee the reliable synchronization of all TM by the synchronous TM of main overall markers discharge device;
Further; Can know by Fig. 2; Second the same S2 crosspoint 20K3 to the K plane also can receive the cipher chain synchronization that a plurality of S1/3 crosspoint 20K2 send; Synchronous repeatedly for preventing same S2 crosspoint quilt in the once time synchronization process, can by synchronous repeatedly mechanism the S2 crosspoint be provided with according to the S1/3 crosspoint that prevents that preamble has been stated, repeat no more here.
More than serve as that main overall markers discharge device is to introduce the method that first embodiment of the invention provides for clearer with the S2 crosspoint 2013 ' in first plane, should not think restriction to the embodiment of the invention.In practical application, can select S2 crosspoint in any plane as main overall markers discharge device, trigger the synchronous flow process of overall markers, do not influence the realization of the embodiment of the invention.
Secondly, be example with the S1/3 crosspoint as overall markers discharge device, the switching network of multiple planes global timing mark synchronization method that the embodiment of the invention is provided describes in detail.
See also Fig. 4, for the switching network of multiple planes overall situation markers synchro system that second embodiment of the invention provides is formed sketch map, in this embodiment by the main overall markers discharge device of the 2012 ' conduct of the S1/3 crosspoint in first plane.To system shown in Figure 4, second embodiment of the invention provides a kind of switching network of multiple planes global timing mark synchronization method.
See also Fig. 5, be the switching network of multiple planes global timing mark synchronization method flow chart that second embodiment of the invention provides, this method comprises:
Step 401:S1/3 crosspoint 2012 ' is designated as benchmark during with this locality, cycle or aperiodicity send carry self markers and path delay parameter cipher chain synchronization to coupled a S2 crosspoint 2013 and a TM201 all or part;
A step 402:S2 crosspoint 2013 and a TM201 upgrade self markers according to markers and path delay parameter that said cipher chain synchronization carries;
Step 403:S2 crosspoint 2013 sends cipher chain synchronization to other the coupled S1/3 crosspoints 2012 that carry self markers and path delay parameter;
Step 404:S1/3 crosspoint 2012 upgrades self markers according to markers and path delay parameter that said cipher chain synchronization carries;
Step 405:S1/3 crosspoint 2012 send carry self markers and path delay parameter cipher chain synchronization to the 2nd coupled TM201;
Step 406: the 2nd TM201 upgrades the markers of self according to markers of carrying in the cipher chain synchronization and path delay parameter;
Can know that by the narration among first embodiment it is synchronous that step 401 to step 406 has been accomplished the overall markers of switching network of multiple planes shown in Figure 4, and guarantee that the overall markers of all TM keeps synchronously among Fig. 4.
In all the other embodiment of the present invention; S1/3 crosspoint 2012 ' also can not sent out cipher chain synchronization earlier and give a TM201 in step 401; And only cipher chain synchronization is sent to coupled S2 crosspoint 2013; Follow-up S1/3 crosspoint 2012 ' as main overall markers discharge device is carried out identical flow process with all the other S1/3 crosspoints; Promptly as the S1/3 crosspoint 2012 ' of main overall markers discharge device after receiving the cipher chain synchronization that coupled S2 crosspoint 2013 sends, the cipher chain synchronization of redispatching is to a coupled TM201.
Further; The global timing mark synchronization method that second embodiment of the invention provides is to utilize the equipment room link to transmit cipher chain synchronization; In practical application; S1/3 crosspoint 2012 ' as main overall markers discharge device may break down, and perhaps link failure etc. can appear in switching network of multiple planes, for the overall markers that under out of order situation, also can accomplish all TM equipment synchronous; The reliability of the global timing mark synchronization method that the enhancing embodiment of the invention provides; Can preestablish with S1/3 crosspoint 2012 ' and be in one or more S1/3 crosspoint with one-level as subsequent use overall markers discharge device, when S1/3 crosspoint 2012 ' breaks down or link failure occurs, the simultaneous operation of fast quick-acting pipe overall situation markers.
In second embodiment of the invention; If second kind of working method work that subsequent use overall markers discharge device has been stated according to preamble; And when having at least one subsequent use overall markers discharge device and main overall markers discharge device not to belong to same plane, said method further comprises:
Step 407:TM201 sends the cipher chain synchronization carry self markers and path delay parameter to coupled S1/3 crosspoint 20K2 (promptly second to the K plane S1/3 crosspoint 20K2);
Step 408:S1/3 crosspoint 20K2 upgrades the markers of self according to markers of carrying in the cipher chain synchronization and path delay parameter;
Step 409: as the S1/3 crosspoint 20K2 of subsequent use overall markers discharge device further send carry self markers and path delay parameter cipher chain synchronization to coupled S2 crosspoint 20K3; It is synchronous that S2 crosspoint 20K3 and coupled S1/3 crosspoint are accomplished TM according to step 402 to 406 flow processs that provide; Wherein, Can by method for synchronous repeatedly TM be set according to the TM that prevents that first embodiment of the invention provides, guarantee the reliable synchronization of all TM.
In second embodiment of the invention; In step 409 as the S1/3 crosspoint 20K2 of subsequent use overall markers discharge device accomplish self markers synchronously after; Send cipher chain synchronization to coupled S2 crosspoint 20K3; S2 crosspoint 20K3 sends cipher chain synchronization coupled S1/3 crosspoint synchronously, and the S1/3 crosspoint sends cipher chain synchronization to TM, thus the reliable synchronization of all TM when having guaranteed main overall markers discharge device fault or link failure.
Can know by Fig. 4; Second S1/3 crosspoint 20K2 and the S2 crosspoint 20K3 to the K plane can receive a plurality of cipher chain synchronizations; Synchronous repeatedly for preventing crosspoint quilt in the once time synchronization process; Can prevent that crosspoint by synchronous repeatedly mechanism, is provided with crosspoint according to what first embodiment of the invention provided, repeat no more here.
More than serve as that main overall markers discharge device is to introduce the method that second embodiment of the invention provides for clearer with the S1/3 crosspoint 2012 ' in first plane, should not think restriction to the embodiment of the invention.In practical application, can select S1/3 crosspoint in any plane as main overall markers discharge device, trigger the synchronous flow process of markers, do not influence the realization of the embodiment of the invention.
At last, be example with TM as overall markers discharge device, the switching network of multiple planes global timing mark synchronization method that the embodiment of the invention is provided describes in detail.
See also Fig. 6, for the switching network of multiple planes overall situation markers synchro system that third embodiment of the invention provides is formed sketch map, in this embodiment by the main overall markers discharge device of TM201 ' conduct.To system shown in Figure 6, third embodiment of the invention provides a kind of switching network of multiple planes global timing mark synchronization method.
See also Fig. 7, be the switching network of multiple planes global timing mark synchronization method flow chart that third embodiment of the invention provides, this method comprises:
Step 501:TM201 ' is designated as benchmark during with this locality, cycle or aperiodicity send carry self markers and path delay parameter cipher chain synchronization to coupled a plurality of S1/3 crosspoint 20K2;
Step 502: a S1/3 crosspoint 20K2 upgrades self markers according to markers and path delay parameter that said cipher chain synchronization carries;
Step 503: a S1/3 crosspoint 20K2 send respectively carry self markers and path delay parameter cipher chain synchronization to a coupled S2 crosspoint 20K3 and a TM201;
A step 504:S2 crosspoint 20K3 and a TM201 upgrade self markers according to markers and path delay parameter that said cipher chain synchronization carries;
Step 505:S2 crosspoint 20K3 send carry self markers and path delay parameter cipher chain synchronization to the 2nd coupled S1/3 crosspoint 20K2;
Step 506: the 2nd S1/3 crosspoint 20K2 upgrades self markers according to markers and path delay parameter that said cipher chain synchronization carries;
Step 507: the 2nd S1/3 crosspoint 20K2 transmission is carried the cipher chain synchronization of self identification and path delay parameter to the 2nd coupled TM201;
Step 508: the 2nd TM201 upgrades self markers according to markers and path delay parameter that said cipher chain synchronization carries.
In all the other embodiment of the present invention; A S1/3 crosspoint 20K2 also can not send out cipher chain synchronization earlier and give a TM201 in step 503; And only cipher chain synchronization is sent to coupled S2 crosspoint 20K3; A follow-up S1/3 crosspoint 20K2 carries out identical flow process with the 2nd S1/3 crosspoint 20K2; Promptly a S1/3 crosspoint 20K2 is after receiving the cipher chain synchronization that coupled S2 crosspoint 20K3 sends, and the cipher chain synchronization of redispatching is to a coupled TM201.
Can know by Fig. 7; First and second TM can receive a plurality of cipher chain synchronizations; Synchronous repeatedly for preventing first and second TM quilt in the once time synchronization process; Can prevent that crosspoint by synchronous repeatedly mechanism, is provided with crosspoint according to what first embodiment of the invention provided, repeat no more here.
Can know that by preamble narration it is synchronous that step 501 to step 508 has been accomplished the overall markers of switching network of multiple planes shown in Figure 7, and guaranteed that the overall markers of all TM keeps synchronously among Fig. 7.
Further; The global timing mark synchronization method that third embodiment of the invention provides is to utilize the equipment room link to transmit cipher chain synchronization; And in practical application; TM201 ' as main overall markers discharge device may break down, and perhaps link failure etc. can appear in switching network of multiple planes, for the overall markers that under out of order situation, also can accomplish all TM equipment synchronous; The reliability of the global timing mark synchronization method that the enhancing embodiment of the invention provides; Can preestablish and TM201 ' is in one or more TM with one-level as subsequent use overall markers discharge device, when TM201 ' breaks down or link failure occurs, the simultaneous operation of fast quick-acting pipe overall situation markers.
In third embodiment of the invention; If second kind of working method work that subsequent use overall markers discharge device has been stated according to preamble; Then as the TM201 of subsequent use overall markers discharge device accomplish self markers synchronously after; Further send carry self markers and path delay parameter cipher chain synchronization to coupled S1/3 crosspoint 20K2; S1/3 crosspoint 20K2 according to step 503 to 508 flow processs that provide accomplish TM synchronously, wherein, synchronous by main overall markers discharge device and subsequent use overall markers discharge device respectively for preventing a TM; Can by method for synchronous repeatedly TM be set according to the TM that prevents that first embodiment of the invention provides, guarantee the reliable synchronization of all TM.
More than be that example is to introduce the method that third embodiment of the invention provides for clearer with TM201 ' shown in Figure 7, should not think restriction to the embodiment of the invention.In practical application, can select any TM as overall markers discharge device, trigger the synchronous flow process of markers, do not influence the realization of the embodiment of the invention.
More than introduced the global timing mark synchronization method that the embodiment of the invention provides.In all the other embodiment of the present invention; The switching network equipment (crosspoint or TM) that transmits as markers is after receiving cipher chain synchronization; Markers and path delay parameter that itself can not carry according to cipher chain synchronization are upgraded self markers, but oneself processing time-delay and path delay parameter is added into cipher chain synchronization; Carry away by cipher chain synchronization; Finally by the processing time-delay of the TM that receives cipher chain synchronization according to the switching network equipment that carries in the cipher chain synchronization, the markers of path delay parameter and main overall markers discharge device is upgraded self markers.It should be noted that; To the less demanding occasion of markers synchronous accuracy; When the time-delay of the processing of switching network equipment in other words itself is very little; Can not add self processing time-delay as the switching network equipment of markers transmission, and the path delay parameter does not influence the realization of the embodiment of the invention to cipher chain synchronization.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in a kind of computer-readable recording medium; This program comprises that preamble stated method step when carrying out.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
The embodiment of the invention also provides a kind of switching network equipment, sees also Fig. 6, and this equipment comprises:
Cipher chain synchronization receiving element 601 is used to receive cipher chain synchronization;
Cipher chain synchronization transmitting element 602 is used for cipher chain synchronization is sent to flow management apparatus through the equipment room link.
More than a kind of switching network of multiple planes global timing mark synchronization method provided by the present invention and system, switching network equipment have been carried out detailed introduction; For one of ordinary skill in the art; Thought according to the embodiment of the invention; The part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (13)
1. a switching network of multiple planes global timing mark synchronization method is characterized in that, said method comprises:
Receive the cipher chain synchronization that overall markers discharge device sends;
Send cipher chain synchronization to flow management apparatus through the equipment room link, synchronous said flow management apparatus;
Having K planar S 2 crosspoints at least is overall markers discharge device, and the cipher chain synchronization that then receives overall markers discharge device transmission comprises:
K planar S 1/3 crosspoint receives the cipher chain synchronization that overall markers discharge device sends;
Sending cipher chain synchronization to flow management apparatus through the equipment room link specifically comprises:
K planar S 1/3 crosspoint sends cipher chain synchronization to coupled flow management apparatus;
Said overall markers discharge device is main overall markers discharge device, and said switching network of multiple planes further comprises: at conplane subsequent use overall markers discharge device, then said method does not further comprise at least one and the overall markers discharge device of said master:
Said flow management apparatus sends cipher chain synchronization to S1/3 crosspoint coupled and that be not synchronized;
The said S1/3 crosspoint that links to each other with flow management apparatus and be not synchronized sends the S2 crosspoint of cipher chain synchronization to the coupled subsequent use overall markers discharge device of conduct.
2. the method for claim 1 is characterized in that, comprises at least in the said cipher chain synchronization: markers if said flow management apparatus is received a plurality of cipher chain synchronizations, then is synchronized with the maximum cipher chain synchronization of markers.
3. a switching network of multiple planes global timing mark synchronization method is characterized in that, said method comprises:
Receive the cipher chain synchronization that overall markers discharge device sends;
Send cipher chain synchronization to flow management apparatus through the equipment room link, synchronous said flow management apparatus;
Having K planar S 1/3 crosspoint at least is said overall markers discharge device, and the cipher chain synchronization that then receives overall markers discharge device transmission specifically comprises:
K planar S 2 crosspoints receive the cipher chain synchronization that overall markers discharge device sends;
Sending cipher chain synchronization to flow management apparatus through the equipment room link specifically comprises:
Said K planar S 2 crosspoints send cipher chain synchronization to other coupled K planar S 1/3 crosspoints;
Other K planar S 1/3 crosspoints that link to each other with K planar S 2 crosspoints send cipher chain synchronization to coupled flow management apparatus.
4. method as claimed in claim 3; It is characterized in that; Said overall markers discharge device is main overall markers discharge device; Said switching network of multiple planes further comprises: at conplane subsequent use overall markers discharge device, then said method does not further comprise at least one and the overall markers discharge device of said master:
Said flow management apparatus sends the S1/3 crosspoint of cipher chain synchronization to the coupled subsequent use overall markers discharge device of conduct.
5. like the described any method of claim 3 to 4, it is characterized in that, comprise at least in the said cipher chain synchronization: markers if said flow management apparatus is received a plurality of cipher chain synchronizations, then is synchronized with the maximum cipher chain synchronization of markers.
6. a switching network of multiple planes global timing mark synchronization method is characterized in that, said method comprises:
Receive the cipher chain synchronization that overall markers discharge device sends;
Send cipher chain synchronization to flow management apparatus through the equipment room link, synchronous said flow management apparatus;
Having a flow management apparatus at least is said overall markers discharge device, and the cipher chain synchronization that then receives overall markers discharge device transmission comprises:
The one S1/3 crosspoint receives the cipher chain synchronization that overall markers discharge device sends;
Sending cipher chain synchronization to flow management apparatus through the equipment room link specifically comprises:
A said S1/3 crosspoint sends cipher chain synchronization to coupled S2 crosspoint;
Said S2 crosspoint sends cipher chain synchronization to the 2nd coupled S1/3 crosspoint;
Said the 2nd S1/3 crosspoint sends cipher chain synchronization to coupled flow management apparatus.
7. method as claimed in claim 6; It is characterized in that; Said overall markers discharge device is main overall markers discharge device, and said switching network of multiple planes further comprises: as the flow management apparatus of subsequent use overall markers discharge device, said method further comprises:
Said flow management apparatus as subsequent use overall markers discharge device sends cipher chain synchronization to coupled S1/3 crosspoint.
8. like the described any method of claim 6 to 7, it is characterized in that, comprise at least in the said cipher chain synchronization: markers if the flow management apparatus that links to each other with the 2nd S1/3 crosspoint is received a plurality of cipher chain synchronizations, then is synchronized with the maximum cipher chain synchronization of markers.
9. a switching network of multiple planes overall situation markers synchro system is characterized in that, comprising: overall markers discharge device, switching network equipment;
Said overall markers discharge device is used to send cipher chain synchronization to coupled said switching network equipment;
Said switching network equipment is used for sending cipher chain synchronization to flow management apparatus through the equipment room link;
At least one K planar S 2 crosspoint is said overall markers discharge device, and the switching network equipment that then links to each other with said overall markers discharge device comprises: K planar S 1/3 crosspoint;
Said switching network equipment sends cipher chain synchronization to flow management apparatus through the equipment room link and comprises:
Said K planar S 1/3 crosspoint sends cipher chain synchronization to coupled flow management apparatus;
Said overall markers discharge device is main overall markers discharge device; Said switching network of multiple planes further comprises: at conplane subsequent use overall markers discharge device, said system does not further comprise: the said flow management apparatus that links to each other with K planar S 1/3 crosspoint at least one and the overall markers discharge device of said master;
The said said flow management apparatus that links to each other with K planar S 1/3 crosspoint sends cipher chain synchronization to S1/3 crosspoint coupled and that be not synchronized;
Link to each other with the said said flow management apparatus that links to each other with K planar S 1/3 crosspoint, and be not synchronized the S2 crosspoint that the S1/3 crosspoint sends the extremely coupled said subsequent use overall markers discharge device of conduct of cipher chain synchronization.
10. a switching network of multiple planes overall situation markers synchro system is characterized in that, comprising: overall markers discharge device, switching network equipment;
At least one K planar S 1/3 crosspoint is said overall markers discharge device, and the switching network equipment that then links to each other with said overall markers discharge device comprises: K planar S 2 crosspoints;
Said K planar S 2 crosspoints send cipher chain synchronization to other coupled K planar S 1/3 crosspoints;
Other K planar S 1/3 crosspoints that link to each other with K planar S 2 crosspoints send cipher chain synchronization to coupled flow management apparatus.
11. system as claimed in claim 10; It is characterized in that; Said overall markers discharge device is main overall markers discharge device; Said switching network of multiple planes further comprises: at conplane subsequent use overall markers discharge device, said system does not further comprise at least one and the overall markers discharge device of said master: the said flow management apparatus that links to each other with said other K planar S 1/3 crosspoints;
The said flow management apparatus that said and said other K planar S 1/3 crosspoints link to each other sends the S1/3 crosspoint of cipher chain synchronization to the coupled subsequent use overall markers discharge device of conduct.
12. a switching network of multiple planes overall situation markers synchro system is characterized in that, comprising: overall markers discharge device, switching network equipment;
At least one flow management apparatus is said overall markers discharge device, and the switching network equipment that then links to each other with said overall markers discharge device comprises: a S1/3 crosspoint;
A said S1/3 crosspoint sends cipher chain synchronization to coupled S2 crosspoint;
Said S2 crosspoint sends cipher chain synchronization to the 2nd coupled S1/3 crosspoint;
Said the 2nd S1/3 crosspoint sends cipher chain synchronization to coupled flow management apparatus.
13. system as claimed in claim 12 is characterized in that, said overall markers discharge device is main overall markers discharge device, and said switching network of multiple planes further comprises: as the flow management apparatus of subsequent use overall markers discharge device,
Said flow management apparatus as subsequent use overall markers discharge device sends cipher chain synchronization to coupled S1/3 crosspoint.
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| CN2008100983977A CN101599824B (en) | 2008-06-02 | 2008-06-02 | Method and system for realizing multilevel switching network global timing signal synchronization and switching network equipment |
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| CN102111334A (en) | 2011-02-21 | 2011-06-29 | 华为技术有限公司 | Method, source line card and network card for processing cells in switched network |
| CN106302251B (en) | 2015-06-26 | 2019-09-06 | 深圳市中兴微电子技术有限公司 | A kind of exchange network synchronous method and switch, access device |
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