CN1595878A - Method for implementing digital cross connection unit via multi-level dispersed intercross - Google Patents
Method for implementing digital cross connection unit via multi-level dispersed intercross Download PDFInfo
- Publication number
- CN1595878A CN1595878A CN 200410049934 CN200410049934A CN1595878A CN 1595878 A CN1595878 A CN 1595878A CN 200410049934 CN200410049934 CN 200410049934 CN 200410049934 A CN200410049934 A CN 200410049934A CN 1595878 A CN1595878 A CN 1595878A
- Authority
- CN
- China
- Prior art keywords
- cross
- business
- professional
- dish
- trade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention relates to a method of realizing digital cross-connected unit by multistage dispersive crossing, concretely relating to a method of realizing digital cross-connected unit doubling the maximum cross capacity of a single cross chip by time-space-time (TST) structural cross chip and multistage dispersive crossing, where the digital cross-connected unit can support strictly unblocked unicast service and also support cocurrent unblocked dicast service, and realizes automatic protection switching function by cooperating with concerted action of multistage crossing.
Description
Technical field
The present invention relates to the method that a kind of multistage dispersion intersection realizes the digital crossover linkage unit, relate to a kind of empty time-division (TST) structure cross chips that divides of time-division that utilizes particularly, realize the method for the digital crossover linkage unit that the maximum cross-capacity twice of monolithic cross chips is intersected by multistage dispersion intersection.
Background technology
Because powerful error monitoring, protection and the management function of SONET/SDH network becomes a kind of visual plant of the communications field, the world today aspect the wide area network transmission technology.Present most of long-distance service all is to transmit on the speed of 2.5Gbit/s and 10Gbit/s by SONET/SDH; And the system of SONET/SDH 40Gbit/s also is applied.And along with the growth of traffic carrying capacity, the whole SDH equipment particularly cross-capacity of core node equipment requires to arrive 160G even 320G, and the maximum cross-capacity of present cross chips also is no more than 200G.So realize the cross-capacity of 320G, whole SDXC needs the multi-disc cross chips to make up to realize.The SONET/SDH cross-capacity is big more simultaneously, and it is more important that the fail safe of equipment and reliability also seem, so the self-healed protection ability of equipment has also been proposed very high requirement.
Based on the requirement of high capacity of switch ability, for SONET/SDH equipment, realize the intersection above the maximum cross-capacity of monolithic cross chips, this just needs a kind of multi-disc cross chips to make up to realize surpassing the method for the maximum cross-capacity of monolithic cross chips.
Utilize conventional method can realize the full intersection of the maximum cross-capacity twice of monolithic cross chips.For example, adopt method shown in Figure 7, interleaving function is only finished by the Cross Trade cross chips, 6 cross chips of minimum needs combine and just can finish, but the cross chips cross-capacity is very big, just need between them to connect, have a lot of problems if in a Cross Trade, realize: can hold so many cross chips in the Cross Trade, the routing problem of HW High Way by a lot of HW High Way (2.5Gb/s).Again for example, adopt method shown in Figure 8, realize Cross Connect equipment, will relate to the structure problem of this equipment with the polylith Cross Trade, and the routing problem of HW High Way between each Cross Trade.In addition, because high capacity of switch chip price costliness, in the design of whole equipment, cost also is the problem that must consider.
Therefore, need a kind ofly both can to have reduced cross chips quantity, to have saved cost, can solve again the equipment overall structure design problem, significantly reduce the new digital crossover linkage unit implementation method of HW High Way quantity.
Summary of the invention
The object of the invention is to provide a kind of method that realizes the digital crossover linkage unit of the maximum cross-capacity twice of monolithic cross chips on time division branch/time separation structure cross chips by multistage dispersion intersection.
Only realize with two cross chips in the full situation of intersecting of the maximum cross-capacity twice of monolithic cross chips that in Cross Trade two cross chips just can only parallel join in the Cross Trade, that is to say separate between two cross chips and be not communicated with.Therefore, are the full intersections that can't realize the maximum cross-capacity twice of monolithic cross chips with these two cross chips only.The present invention only uses in the situation of two cross chips in Cross Trade, takes full advantage of the interleaving function that the upper chip of professional dish has, and has realized a kind of intersection of Multistage dispersion.
A kind of multistage dispersion intersection realizes the method for digital crossover linkage unit, and the method comprising the steps of:
With each professional portfolio of coiling in two,
In being connected of the professional dish of Cross Trade and each, half of high-speed line between each professional dish and the Cross Trade is connected with the first cross chips input of Cross Trade, second half of high-speed line between each professional dish and the Cross Trade is connected with the second cross chips input of Cross Trade, half the professional cross chips through Cross Trade that is each professional dish intersects, and professional another cross chips through Cross Trade of second half of each professional dish intersects;
To the interleaving function division of labor, Cross Trade is responsible for the business between each professional dish is intersected, and professional dish is responsible for the time slot adjustment of each professional dish interior business;
Webmaster is unifiedly calculated out the crossover algorithm data, each professional dish and Cross Trade obtain the crossover algorithm data from webmaster, business examine and seize data comprise and this business dish be sent to each time slot carries out the data that prime is adjusted in the business of Cross Trade, business examine and seize data comprise also this business dish each time slot from the business that Cross Trade receives carried out the data that rear level is adjusted that the data that Cross Trade obtains comprise the data of the cross business of Cross Trade chip;
According to the crossover algorithm data, the business dish adjustment that is connected with the Cross Trade input will send to the time slot of the business of Cross Trade, and the business dish that is connected with the Cross Trade output is adjusted from the time slot of the business of Cross Trade reception;
According to the crossover algorithm data, the cross chips of Cross Trade is carried out the intersection to business.
The method according to this invention, the step that it is characterized in that webmaster calculating crossover algorithm further comprises: keep standby crossedpath in advance, calculate the main crossings path data and be equipped with the crossedpath data, and guarantee each professional main crossings path and be equipped with crossedpath on the same cross chips of Cross Trade.
The method according to this invention is characterized in that business examines and seizes to such an extent that the step of data further comprises: obtain main path crossover algorithm data and also write the main crossings page register, obtain standby paths intersect algorithm data and also write the standby page register that intersects.
The method according to this invention; the cross chips that it is characterized in that Cross Trade is carried out the step that business is intersected and further comprised: professional dish operating state is checked in Cross Trade; when finding a business dish fault; start APS; with the switching services of the professional dish of this fault to another professional dish, Cross Trade simultaneously by overhead bus control another professional dish with employed intersection data from the page turning of main crossings page register to intersecting page register fully.
The invention provides a kind of implementation method and application of brand-new high capacity of switch unit.The present invention relates to the design of whole SDH equipment overall structure, the equipment cost problem; The problem of high-speed serial signals line (2.5Gb/s even higher) cabling; The implementation method problem that multistage dispersion intersects; Guarantee professional seamless switching during the cross-over configuration change; The protection switch time of 50ms.
Description of drawings
Fig. 1 is the connected mode schematic diagram of Cross Trade in the digital crossover linkage unit of the inventive method realization and professional dish;
Fig. 2 is the schematic diagram of the concrete connected mode of HW High Way between two cross chips in each professional dish among Fig. 1 and the Cross Trade;
Fig. 3 is the schematic diagram of professional dish upper storage main crossings path and standby crossedpath in the digital crossover linkage unit among Fig. 1;
Fig. 4 is the schematic diagram of configuration routing procedure in the digital crossover linkage unit of the present invention;
Fig. 5 is a schematic diagram of realizing the APS process in the digital crossover linkage unit of the present invention;
Fig. 6 is the schematic diagram of page turning overhead bus connected mode between the professional dish of Cross Trade and each among Fig. 1;
Fig. 7 is the conventional chip connection layouts of only realizing 2 times of full intersections of cross chips by the Cross Trade cross chips;
Fig. 8 conventional only realizes 2 times of complete many Cross Trades of intersection structure charts of cross chips by the Cross Trade cross chips.
Embodiment
Describe know-why of the present invention in detail below in conjunction with accompanying drawing.
Fig. 1 is the connected mode schematic diagram of Cross Trade in the digital crossover linkage unit of the inventive method realization and professional dish.According to method of the present invention, at first the interleaving function of Cross Trade and business is divided the work, owing to each professional chip that coils can only intersect to the business of this business dish, so Cross Trade is arrived this business dish to the repeat in work of each business dish with regard to necessary the realization; And the function of each business realizing is exactly the time slot adjustment of this business dish interior business.
No matter crossover algorithm is crossed to each professional dish to the needed business of each professional dish according to network management configuration by the Cross Trade cross chips, still time-slot sequence (because professional dish can be readjusted time slot by minimum intersection particle again after receiving the Cross Trade business).Though no matter Cross Trade is crossed to the business of each professional dish the smallest particles time-slot sequence, still can run into the situation of obstruction, because the high-speed line that each professional dish is connected to the Cross Trade cross chips is fixed, like this, the professional a certain time slot of sending out from business dish cross chips or fixedly deliver to first of Cross Trade cross chips, deliver to second, promptly the business of delivering to first cross chips of Cross Trade from the business dish can only be delivered to other professional dishes by the high-speed line that is connected with first cross chips, and the same business of delivering to second cross chips of Cross Trade from the business dish can only be delivered to other professional coiling by the high-speed line that is connected with second cross chips.Cross Trade can not be delivered to the business that the business dish is delivered to the first cross chips that part of time slot at the high-speed line place that professional dish is connected with second cross chips; Same, Cross Trade can not be delivered to the business that the business dish is delivered to second cross chips that part of time slot of the high-speed line that professional dish is connected with the first cross chips.Here it is two cross chips can not intercommunication limitation, only can not realize choke free full intersection by two cross chips.Need this time the chip of professional dish to cooperate to finish whole intersection.The method of adjusting has two kinds: if some time slot that the business dish is delivered to the first cross chips will be crossed to some time slot that is connected with second cross chips, first method is: do not adjust before the Cross Trade intersection delivered to business by the business dish, directly deliver to after the first cross chips intersects, deliver to the required business dish that is crossed to of network management configuration, but can not deliver to the required time slot that is crossed to of network management configuration, professional dish chip is crossed to the required time slot that is crossed to of network management configuration to this time slot services; Second method is to carry out the time slot adjustment at business dish chip before professional dish is delivered to Cross Trade to business, this time slot is delivered to second cross chips of Cross Trade intersect, and directly delivers to the time slot of the business dish that network management configuration need to intersect.Need two kinds of methods to cooperate when sometimes being a professional accessed path and could eliminate obstruction, find crossedpath.Crossover algorithm has just obtained three parts intersection data like this, and first is exactly the intersection data of the Cross Trade cross chips of core, and second portion is exactly the intersection data that the business of sending here from Cross Trade is resequenced in realization; The third part data are exactly the professional intersection data of adjusting as required earlier of delivering to Cross Trade.Because all intersection data relate to Cross Trade and all business dishes, so algorithm is to realize rather than realize in Cross Trade at webmaster, the intersection data that obtain are delivered to respectively on Cross Trade and each the professional dish, and the crossing number that Cross Trade and each professional packing certificate obtain is existing intersection separately factually.So just realized that Cross Trade and each professional dish cooperate the clog-free intersection that realizes the maximum cross-capacity twice of monolithic cross chips by multistage dispersion intersection.For half business with each professional dish is connected with first cross chips of Cross Trade, second half business is connected with second cross chips of Cross Trade, also need the high-speed line that each professional dish is connected with Cross Trade is divided equally, half of high-speed line is connected with the first cross chips of Cross Trade, second half of high-speed line is connected with second cross chips, the business that is each professional dish is to be divided into two halves to deliver to respectively two cross chips, could break through like this restriction that two cross chips can not intercommunication, when the business dish is delivered to two cross chips business reorganizations, just can not occur blocking, realize the clog-free full intersection of 2 times of cross-capacities of single cross chips.
The digital crossover unit that the inventive method realizes also has APS (APS) function.The realization of APS protection also is a kind of brand-new mode, and realizing that the APS protection is switched needs crossover algorithm that the business standby interleaving route of advocating peace is considered simultaneously, and professional standby interleaving route is reserved in advance.Since Cross Trade have two can not interconnective cross chips, business of each professional dish must be divided into two halves and intersect from two cross chips respectively.So when giving that each bar is professional reserves standby interleaving route, must guarantee that main crossings route that each bar (the minimum particle that intersects) is professional and standby interleaving route are on the same cross chips of Cross Trade.The professional corresponding Cross Trade cross chips main crossings route of each professional dish and cross-over configuration data corresponding to standby interleaving route difference generate different intersection page datas simultaneously, are written to respectively each professional dish chip main crossings page or leaf and standby intersection page register.By an overhead bus connection, Cross Trade can be controlled each business dish cross chips page turning by overhead bus between while Cross Trade and each professional the coiling, and promptly business dish chip is in main crossings page or leaf and switching between the intersection page or leaf fully.Under the normal condition, all business are all intersected by Cross Trade cross chips main crossings route, and each professional dish also is operated in the main crossings page or leaf; When a certain professional dish fault, the business of this business dish (professional dish A) can be switched on the other professional dish (professional dish B).The process that realizes is: after professional dish A fault is found in Cross Trade; APS protects startup; the business of professional dish A on the cross chips of Cross Trade from the main crossings routing switch to standby interleaving route; simultaneously Cross Trade is by overhead bus service control dish B; make professional dish B switch to the standby page or leaf that intersects from the main crossings page or leaf; thereby realized that APS switches, the business of the business dish A that breaks down all has been switched on the professional dish B, and can have influence on the business of other professional dishes.And because the standby page data that intersects of each professional dish is finished writing in advance, when breaking down by total line traffic control page turning, do not need again to write interleave registers, so speed is very fast, can well satisfies APS and switch the requirement that service disconnection can not surpass 50MS.
Fig. 2 is the schematic diagram of the concrete connected mode of HW High Way between two cross chips in each professional dish among Fig. 1 and the Cross Trade.In the embodiments of the invention, utilize 2.5Gb/s high-speed serial I/O to connect the professional dish of SDH and Cross Trade, the feasible program of a kind of big capacity SDH/SONET system (10G/40G and above system) exploitation is provided.As shown in Figure 2, half HW High Way of each professional dish is connected with Cross Trade cross chips 1, and second half is connected with cross chips 2, has so just realized that business that each business is coiled is mean allocation and intersects to two chips of Cross Trade.
Fig. 3 is the schematic diagram of professional dish upper storage main crossings path and standby crossedpath in the digital crossover linkage unit among Fig. 1.As shown in Figure 3, webmaster keeps standby crossedpath in advance in the inventive method when calculating path, and when calculating the main path data, also calculate path data fully, and they are stored in main crossings page register of each professional dish respectively and intersect fully in the page register.
Fig. 4 is the schematic diagram of configuration routing procedure in the digital crossover linkage unit of the present invention.Multistage crossover algorithm of the present invention is based on the intersection and the core of Cross Trade, as shown in Figure 4, at first algorithm is given the professional crossedpath of seeking according to network management configuration in the Cross Trade cross chips, because professional dish has half business to deliver to first cross chips of Cross Trade, second half delivers to second cross chips of Cross Trade, if the capacity of a professional dish is m the minimum particle that intersects, 1-m/2 bar business that so should the business dish is delivered to first cross chips of Cross Trade, and m/2+1-m bar business is delivered to second cross chips of Cross Trade.In the accessed path of cross chips the inside, if cross-over configuration is will be the repeat in work in the 1-m/2 bar business of a professional dish in the 1-m/2 bar business of another piece Cross Trade, the first chip of Cross Trade can the complete independently cross-over configuration; If same cross-over configuration is will be the repeat in work in the m/2+1-m bar business of a professional dish in the m/2+1-m bar business of another piece Cross Trade, second chip of Cross Trade can the complete independently cross-over configuration.If but cross-over configuration will be crossed to the business in the 1-m/2 bar business of a professional dish in the m/2+1-m bar business of an other Cross Trade and go (or will be crossed to the business in the m/2+1-m bar business of a professional dish in the 1-m/2 bar business of an other Cross Trade go), only can't realize, just need this time professional dish to cooperate realization by the Cross Trade cross chips.((m/2+1＜=x＜=m) bar goes the bar repeat in work of 1＜=x＜=m/2) to the y of B Cross Trade if cross-over configuration will be coiled the x of A to business, but the Cross Trade cross chips only can realize repeat in work to the z of B Cross Trade (1＜=x＜=m/2) bar goes, by business dish B going to y bar business at this dish realization z bar repeat in work.Just realized the x bar business of the professional dish of A is crossed to the intersection of the y bar business of B Cross Trade like this by the cooperation of Cross Trade and professional dish.We are called rear level and adjust through intersecting the mode adjusted by the business dish again after the Cross Trade this, only intersect by Cross Trade and rear level is adjusted or can not be satisfied under any circumstance fully and can both realize full intersection.There is a bar business will be crossed among the professional dish B in the 1-m/2 bar business such as a professional dish A and goes, have c bar business will be crossed to professional dish B in the 1-m/2 bar business of professional dish C, but a+c＞m/2.If the mode by rear level adjustment, just have a+c bar business and will be crossed to by the first cross chips of Cross Trade professional dish B, the first cross chips of Cross Trade can only coil B to m/2 bar repeat in work to professional, but blocking will appear in a+c＞m/2 like this.We just need to carry out the prime adjustment in this case, and so-called prime adjustment is exactly professional dish business being delivered to before Cross Trade intersects, and carries out the time slot adjustment earlier in the business dish, and then deliver to Cross Trade and intersect.Concrete method is: ((m/2+1＜=x＜=m) bar goes the bar repeat in work of 1＜=x＜=m/2) to the y of B Cross Trade will to coil the x of A to business such as network management configuration, at first realize that by business dish A x bar repeat in work is to z (the bar business of m/2+1＜=x＜=m) in this dish, professional dish A delivers to z bar business second cross chips of Cross Trade then, second cross chips removes this repeat in work to the y bar business of Cross Trade B, can realize that so also ((function that the bar of m/2+1＜=x＜=m) goes thisly enters Cross Trade in business and just carries out the mode of time slot adjustment before intersecting be referred to as the prime adjustment in the business dish bar repeat in work of 1＜=x＜=m/2) to the y of B Cross Trade the x of business dish A.Just realized the x bar business of the professional dish of A is crossed to the intersection of the y bar business of B Cross Trade like this by the cooperation of Cross Trade and professional dish.
Fig. 5 is a schematic diagram of realizing the APS process in the digital crossover linkage unit of the present invention; Fig. 6 is the schematic diagram of page turning overhead bus connected mode between Cross Trade of the present invention and each the professional dish.When intersecting, to consider the APS protection, because this interleaved mode of the present invention is distributed multi-stage cross, so in the APS protection, also be to have used a kind of brand-new mode.At first in Cross Trade because two cross chips are arranged; crossover algorithm will be given every professional backup path of reserving in advance; but because two cross chips can not intercommunication; so guaranteeing the primary path of every business and backup path must could guarantee can not occur blocking when the APS protection is switched on a slice cross chips like this.The primary and backup path that guarantees same business is that prime by business dish chip and back level are adjusted and realized on a slice cross chips.Prime adjustment that like this will be corresponding different when Cross Trade is operated in primary path and backup path and and rear level adjust; corresponding each the professional dish of crossover algorithm will generate two pages of different intersection data when considering the APS protection like this, and we are referred to as primary intersection page or leaf and intersection for subsequent use page or leaf.These two pages intersection data write two pages of interleave registers of the chip of professional dish respectively.Simultaneously, the present invention has designed special-purpose overhead bus between Cross Trade and each professional dish, and Cross Trade can be carried out the interleave registers page turning by the chip of each professional dish of this total line traffic control.Business all under the normal condition are intersected by primary crossedpath in the Cross Trade cross chips, and each professional dish chip also all is operated in primary intersection page or leaf.As shown in Figure 6, when a certain professional dish breaks down, Cross Trade will be switched to through the business of this business dish crossedpath for subsequent use, and meanwhile Cross Trade is switched to intersection page or leaf for subsequent use by the corresponding professional dish of the total line traffic control of intersection page turning.Like this; Cross Trade and the simultaneously coordination of professional dish; jointly having finished the APS protection switches; and because the intersection page or leaf for subsequent use of each professional dish is to write in advance the stand-by register page or leaf; by the page turning of hardware bus control intersection page register when switching; speed is very fast, and this has also guaranteed break period can not be greater than the requirement of 50MS in the seamless handover service of APS protection.Same when the professional dish of fault recovers, the business that Cross Trade should the business dish is switched to primary crossedpath from crossedpath for subsequent use, page switches to primary intersection page by the professional dish of page turning control bus control chip from intersections for subsequent use simultaneously.
The digital crossover linkage unit that utilizes the inventive method to realize can be supported the unicast service of strictly non-blocking, also can support concurrent choke free bi-casting business; Method of the present invention can realize 2 times to the high capacity of switch of the maximum cross-capacity of monolithic cross chips by multistage T-S-T intersection, and realizes the APS protection by the interoperation of multi-stage cross.
Claims (4)
1. a multistage dispersion intersects the method that realizes the digital crossover linkage unit, and the method comprising the steps of:
With each professional portfolio of coiling in two,
In being connected of the professional dish of Cross Trade and each, half of high-speed line between each professional dish and the Cross Trade is connected with the first cross chips input of Cross Trade, second half of high-speed line between each professional dish and the Cross Trade is connected with the second cross chips input of Cross Trade, half the professional cross chips through Cross Trade that is each professional dish intersects, and professional another cross chips through Cross Trade of second half of each professional dish intersects;
To the interleaving function division of labor, Cross Trade is responsible for the business between each professional dish is intersected, and professional dish is responsible for the time slot adjustment of each professional dish interior business;
Webmaster is unifiedly calculated out the crossover algorithm data, each professional dish and Cross Trade obtain the crossover algorithm data from webmaster, business examine and seize data comprise and this business dish be sent to each time slot carries out the data that prime is adjusted in the business of Cross Trade, business examine and seize data comprise also this business dish each time slot from the business that Cross Trade receives carried out the data that rear level is adjusted that the data that Cross Trade obtains comprise the data of the cross business of Cross Trade chip;
According to the crossover algorithm data, the business dish adjustment that is connected with the Cross Trade input will send to the time slot of the business of Cross Trade, and the business dish that is connected with the Cross Trade output is adjusted from the time slot of the business of Cross Trade reception;
According to the crossover algorithm data, the cross chips of Cross Trade is carried out the intersection to business.
2. according to the method for claim 1, the step that it is characterized in that webmaster calculating crossover algorithm further comprises: keep standby crossedpath in advance, calculate the main crossings path data and be equipped with the crossedpath data, and guarantee each professional main crossings path and be equipped with crossedpath on the same cross chips of Cross Trade.
3. according to the method for claim 1, it is characterized in that business examines and seizes to such an extent that the step of data further comprises: obtain main path crossover algorithm data and also write the main crossings page register, obtain standby paths intersect algorithm data and also write the standby page register that intersects.
4. according to the method for claim 1; it is characterized in that the step that the cross chips of Cross Trade is carried out repeat in work further comprises: Cross Trade checks professional dish duty; when finding a professional dish fault; start APS; the professional business of coiling of this fault is switched on another professional dish, and simultaneously Cross Trade is controlled another professional coiling employed intersection data from the page turning of main crossings page register to the standby page register that intersects by overhead bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100499340A CN100380866C (en) | 2004-06-21 | 2004-06-21 | Method for implementing digital cross connection unit via multi-level dispersed intercross |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100499340A CN100380866C (en) | 2004-06-21 | 2004-06-21 | Method for implementing digital cross connection unit via multi-level dispersed intercross |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1595878A true CN1595878A (en) | 2005-03-16 |
| CN100380866C CN100380866C (en) | 2008-04-09 |
Family
ID=34665865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100499340A Expired - Fee Related CN100380866C (en) | 2004-06-21 | 2004-06-21 | Method for implementing digital cross connection unit via multi-level dispersed intercross |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100380866C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011009342A1 (en) * | 2009-07-21 | 2011-01-27 | 中兴通讯股份有限公司 | Device and method for implementing multi-channel overhead bus cross |
| CN101179351B (en) * | 2006-11-07 | 2012-05-09 | 中兴通讯股份有限公司 | Dynamic allocation method for space/time division cross time slot resource of synchronous digital hierarchy equipment |
| CN106453089A (en) * | 2016-10-17 | 2017-02-22 | 天津光电通信技术有限公司 | Large-capacity SDH signal cross-convergence system and routing algorithm based on graph theory |
| CN106534615A (en) * | 2016-11-18 | 2017-03-22 | 广东威创视讯科技股份有限公司 | Video signal processing apparatus and control method thereof |
| CN108462549A (en) * | 2017-11-22 | 2018-08-28 | 上海欣诺通信技术股份有限公司 | Protection group is superimposed reverse method, control device and optical communication equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105196796B (en) * | 2015-10-30 | 2018-05-18 | 王国丰 | Anti-skid device of vehicle and anti-skidding vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6535311B1 (en) * | 1999-12-09 | 2003-03-18 | Corning Incorporated | Wavelength selective cross-connect switch using a MEMS shutter array |
| CN100388701C (en) * | 2002-10-24 | 2008-05-14 | 华为技术有限公司 | Auxiliary data port device in synchronous digital system and its communication method |
-
2004
- 2004-06-21 CN CNB2004100499340A patent/CN100380866C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101179351B (en) * | 2006-11-07 | 2012-05-09 | 中兴通讯股份有限公司 | Dynamic allocation method for space/time division cross time slot resource of synchronous digital hierarchy equipment |
| WO2011009342A1 (en) * | 2009-07-21 | 2011-01-27 | 中兴通讯股份有限公司 | Device and method for implementing multi-channel overhead bus cross |
| CN106453089A (en) * | 2016-10-17 | 2017-02-22 | 天津光电通信技术有限公司 | Large-capacity SDH signal cross-convergence system and routing algorithm based on graph theory |
| CN106453089B (en) * | 2016-10-17 | 2019-05-24 | 天津光电通信技术有限公司 | Large capacity SDH signal cross collecting system and routing algorithm based on graph theory |
| CN106534615A (en) * | 2016-11-18 | 2017-03-22 | 广东威创视讯科技股份有限公司 | Video signal processing apparatus and control method thereof |
| CN106534615B (en) * | 2016-11-18 | 2019-07-12 | 广东威创视讯科技股份有限公司 | Apparatus for processing of video signals and its control method |
| CN108462549A (en) * | 2017-11-22 | 2018-08-28 | 上海欣诺通信技术股份有限公司 | Protection group is superimposed reverse method, control device and optical communication equipment |
| CN108462549B (en) * | 2017-11-22 | 2019-07-09 | 上海欣诺通信技术股份有限公司 | Protection group is superimposed reverse method, control device and optical communication equipment |
| US10979138B2 (en) | 2017-11-22 | 2021-04-13 | Sino-Telecom Technology Co., Inc. | Protection group superposition switching method, control apparatus, and optical communication device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100380866C (en) | 2008-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69233303T2 (en) | Ring-shaped 1: N protective device | |
| US5673262A (en) | Communication network comprising transit switches without asynchronous transfer mode switching capability | |
| DE69327200T2 (en) | Connection security in a digital telecommunications system | |
| US4811333A (en) | Substantially non-blocking space switching arrangement | |
| JPH0147944B2 (en) | ||
| DE69732070T2 (en) | Telecommunications network based on distributed control | |
| CN1072866C (en) | Grooming device for streamlining telecommunication signals | |
| PL172499B1 (en) | Connection route setting up in wide-band telecommunication networks | |
| CN1082756C (en) | Switching network and operation method thereof | |
| CA2302257C (en) | Communication device for the transmission of information signals | |
| CN100380866C (en) | Method for implementing digital cross connection unit via multi-level dispersed intercross | |
| CN1180654C (en) | Euivalent switching method for transmission devices in MPLS networks | |
| CA2270657C (en) | A method for switching transmission devices to an equivalent circuit for the bidirectional transmission of atm cells | |
| CN110708254B (en) | Service processing method, control equipment and storage medium | |
| JP3139424B2 (en) | TST 3-stage switch control system | |
| DE60101710T2 (en) | Task prioritizer of a cross connect matrix | |
| DE69226013T2 (en) | ATM circuitry | |
| CN1093709C (en) | Method of carrying out fast protection conversion | |
| CN1589586A (en) | Optical node with add-drop or cross-connect functionality | |
| CN85109292A (en) | Data communication network | |
| DE69932461T2 (en) | telecommunications systems | |
| CN1059768C (en) | Dual connections | |
| CN1118143C (en) | Telecommunication switch, and switching telecommunication signals | |
| CN2790079Y (en) | Media gateway equipment utilizing time-division space-division-time division switching network to realize interframe cascade connection | |
| CN1426181A (en) | Exchange device including local decoder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080409 Termination date: 20170621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |