CN101137247A - Access system and method for PDH branch service - Google Patents
Access system and method for PDH branch service Download PDFInfo
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- CN101137247A CN101137247A CNA2007101640221A CN200710164022A CN101137247A CN 101137247 A CN101137247 A CN 101137247A CN A2007101640221 A CNA2007101640221 A CN A2007101640221A CN 200710164022 A CN200710164022 A CN 200710164022A CN 101137247 A CN101137247 A CN 101137247A
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Abstract
The invention discloses an access system of plesiochronous digital hierarchy tributary service, comprising: tributary service adapter plates, many types of tributary interface boards which are connected by a same bus and the tributary service adapter plate, wherein, the tributary interface board comprises: an analog interface circuit unit, an interface processing unit and a mapping unit. Through separating the interface processing and the service adaptation, different tributary interface boards can use same tributary service adapter plates, the invention reduces workload of product design, shortens product development cycle; and when the system back board needs to update, the tributary interface can be loaded with only changing the service adapter plate; the tributary interface boards can be applied to different series product, investment of traders can be protected in maximum.
Description
Technical field
The present invention relates to communication technical field, relate in particular to SDH (Synchronous Digital Hierarchy, SDH (Synchronous Digital Hierarchy)) and SONET (Synchronous Optical Network, synchronous optical network) in the optical transmission communication equipment, the access technology field of PDH (PDH (Pseudo-synchronous Digital Hierarchy)) branch service.
Background technology
In present SDH and SONET optical transmission device, the main back board service bus that adopts is STM-N (Synchronous Transport Module, Synchronous Transport Module level-N, N=1,4,16,64 an etc.) form.When the access that utilizes this mode to carry out PDH (PDH (Pseudo-synchronous Digital Hierarchy)) branch service is handled, not only comprise branch service interface and Business Processing, also business being carried out the STM-N framing of SDH handles, be transferred to other functional units of equipment afterwards by backboard, the wiring board of delivering to equipment according to the configuration of webmaster again transmits.
Adopt the STM-N form, its branch service interface, Business Processing and STM-N framing are all finished on an integrated circuit board.On communication engineering, the PDH tributary interface type of user side may need to change flexibly according to the dissimilar of business, when PDH tributary interface type changes, the monoblock integrated circuit board must be changed together, thereby be caused bigger fund waste.
Summary of the invention
The invention provides a kind of connecting system and method for PDH branch service, in order to solve in the prior art when PDH tributary interface type changes the problem that the monoblock integrated circuit board must be changed together.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of connecting system of PDH branch service, comprising: branch service adaptation board, polytype tributary interface plate, described polytype tributary interface plate is connected with the branch service adaptation board by identical bus respectively,
At the professional receive direction of plesiochronous digital system branch, after the service signal that described tributary interface plate is used for receiving carried out Business Processing, the signal after will handling by described bus sent to connected branch service adaptation board; Described branch service adaptation board is used for carrying out to the received signal the frame encapsulation, and sends the signal after the encapsulation;
At the professional sending direction of accurate synchrodata system branch, described branch service adaptation board is used for the service signal that receives is removed the frame encapsulation, and the signal that releasing obtains is sent to connected tributary interface plate by described bus; Described tributary interface plate is used for the signal that receives is carried out Business Processing.
Wherein, the bus type between described tributary interface plate and the branch service adaptation board is fourth stage virtual container bus or fourth stage administrative unit bus.Described polytype tributary interface plate comprises following two kinds of tributary interface plates at least:
E1 tributary interface plate, E2 tributary interface plate, E3 tributary interface plate, E4 tributary interface plate; Perhaps, described polytype tributary interface plate comprises following two kinds of tributary interface plates at least:
T1 tributary interface plate, T2 tributary interface plate, T3 tributary interface plate, T4 tributary interface plate.
Further, described tributary interface plate specifically comprises:
The analog interface circuit unit, at the professional receive direction of plesiochronous digital system branch, described analog interface circuit unit is used for the service signal that inserts from described tributary interface plate is carried out power match; At the professional sending direction of accurate synchrodata system branch, described analog interface circuit unit is used for the service signal that obtains from the interface processing unit is carried out power match;
The interface processing unit, at the professional receive direction of plesiochronous digital system branch, described interface processing unit is used for carrying out clock, data recovery, code conversion and decoding through the signal after the analog interface circuit units match; At the professional sending direction of accurate synchrodata system branch, described interface processing unit is used for the tributary signal that solves through map unit is carried out code conversion, clock insertion and coding;
Map unit, at the professional receive direction of plesiochronous digital system branch, described map unit is used for and will carries out the mapping of tributary signal to fourth stage virtual container data or fourth stage administrative unit data through the signal after the interface processing unit processes; At the professional sending direction of accurate synchrodata system branch, described map unit is used for solving corresponding tributary signal from fourth stage virtual container or fourth stage administrative unit.
The present invention also provides a kind of cut-in method of PDH branch service, comprising:
Branch service adaptation board and polytype tributary interface plate are set in SDH (Synchronous Digital Hierarchy)/synchronous optical network transmission equipment, and described polytype tributary interface plate is connected with the branch service adaptation board by identical bus respectively;
At the professional receive direction of plesiochronous digital system branch, after described tributary interface plate carries out Business Processing with the service signal that receives, send to connected branch service adaptation board by the signal of described bus after with described processing; Described branch service adaptation board carries out the frame encapsulation to the received signal, and sends the signal after the encapsulation; And/or,
At the professional sending direction of accurate synchrodata system branch, described branch service adaptation board is removed the frame encapsulation to the business datum that receives, and the signal that releasing obtains is sent to the tributary interface plate by described bus; Described tributary interface plate carries out Business Processing to the signal that receives.
Further, at the professional receive direction of plesiochronous digital system branch, described tributary interface plate specifically comprises the step that the service signal that receives carries out Business Processing:
The service signal that inserts from described tributary interface plate is carried out power match, and send the signal after the coupling;
Signal after the coupling is carried out clock, data recovery, code conversion and decoding;
Carry out signal map, and the signal after will shining upon and clock, frame head information send to the branch service adaptation board together.
Further, at the professional sending direction of accurate synchrodata system branch, described tributary interface plate specifically comprises the step that the signal that receives carries out Business Processing:
Solve corresponding tributary signal according to the service signal that receives;
Described tributary signal is carried out code conversion, clock insertion and coding;
Tributary signal is carried out power match.
Further, described polytype tributary interface plate comprises following two kinds of tributary interface plates at least:
E1 tributary interface plate, E2 tributary interface plate, E3 tributary interface plate, E4 tributary interface plate; Perhaps, described polytype tributary interface plate comprises following two kinds of tributary interface plates at least:
T1 tributary interface plate, T2 tributary interface plate, T3 tributary interface plate, T4 tributary interface plate.
Beneficial effect of the present invention is as follows:
Because interface is handled and professional adaptive the separation, and different tributary interface plates can use identical branch service adaptation board, reduces the workload of product design, shortens product development cycle;
Interface is handled and is separated with professional adaption function, and the interface board function is simplified, and can reduce the workload of production test; And different interface boards can use identical professional adaptation board, can reduce inventory risk;
The professional adaptation board structure of simplifying is convenient to develop more value-added functionality, leads directly to as branch service etc.;
Be convenient to smooth upgrade, when System Backplane need be upgraded, only need to change professional adaptation board and just can carry tributary interface; Simultaneously also make things convenient for the tributary interface plate to be applied to different series product, protected the investment of operator to greatest extent;
Because what insert is the PDH business, capacity is low, and data rate is not high, even adopt the comparatively VC-4/AU-4 bus of low speed between tributary interface plate and the branch service adaptation board, does not worry the problem that the backplane interface wiring quantity is too high yet.
Description of drawings
Fig. 1 is the structural representation of the described system of the embodiment of the invention;
Fig. 2 is the structural relation schematic diagram of the described system of the embodiment of the invention and other integrated circuit boards;
Fig. 3 is the structural relation example schematic of the described system of the embodiment of the invention and other plates.
Embodiment
Below in conjunction with accompanying drawing the described system and method for the embodiment of the invention is elaborated.
The core concept of the described system and method for the embodiment of the invention mainly comprises: in the SDH/SONET transmission equipment PDH tributary interface and branch service processing are separated into tributary interface plate and branch service adaptation board; The adaptive integrated circuit board of same branch service can the dissimilar tributary interface plate of compatible butt joint.SDH belongs to ITU-T (International Telecommunication Association) series standard, and SONET belongs to the North America series standard, and the two flesh and blood and main standard are similar to, also can be general on the core bus designing technique.The present invention relates to the optical transmission communication equipment category of SDH and two kinds of standards of SONET, in the follow-up explanation, describe, be applied as the environment explanation with SDH equipment for reduction language.But it will be recognized by those skilled in the art that described system and method is equally applicable to the SONET transmission equipment in the invention process.
At first the described system of the embodiment of the invention is elaborated.
As shown in Figure 1, the described system of the embodiment of the invention specifically comprises:
Branch service adaptation board, polytype tributary interface plate, described polytype tributary interface plate is connected with the branch service adaptation board by identical bus respectively, and the type of described bus can be VC-4 (fourth stage virtual container) bus or AU-4 (fourth stage administrative unit) bus in the specific implementation process of the embodiment of the invention.Wherein, described tributary interface plate specifically comprises: analog interface circuit unit, interface processing unit, map unit.
Concrete processing procedure to the described system of the embodiment of the invention is elaborated below.
As shown in Figure 2, Fig. 2 is the structural relation schematic diagram of the described system of the embodiment of the invention and other integrated circuit boards,
At the PDH receive direction, service signal inserts by the tributary interface plate, after process analog interface circuit unit carries out power match, enter the interface processing unit, the interface processing unit is finished clock again, data are recovered, code conversion and decoding processing, and signal enters map unit afterwards again, by map unit finish tributary signal to VC-4 the mapping of AU-4 data, the signal after the mapping by VC-4 the AU-4 bus send to the branch service adaptation board; By branch service is adaptive the signal of mapping after the unit maps carried out the STM-N framing encapsulation process of SDH, as: the VC-4 signal is encapsulated among the STM-4.Final this service signal is sent to other integrated circuit board and transmits after being sent to cross unit and finishing professional interconnection by the unified service bus form of backboard.
At the PDH sending direction, finish the inverse process of receive direction.Be exactly specifically, deliver to the branch service adaptation board from the service signal that Optical Line Board OL is sent here by cross board, after finishing business datum and peel off STM-4 encapsulation by the branch service adaptation board, VC-4/AU4 data, clock and frame head information are transferred to the tributary interface plate handle.The map unit of all types of tributary interface plates solves corresponding tributary signal, finish code conversion, clock insertion and encoding process by the interface processing unit, undertaken forming standard interface categorical datas such as E1/E2/E3/E4 after the power match by the analog interface circuit unit at last, send to user side.
In the specific implementation process of the embodiment of the invention, described analog interface circuit unit is generally transformer group, and described interface processing unit can be managed chip (LIU) for interface, described map unit can be the mapping chip.
Kind according to interface process chip (LIU) and mapping chip can be divided into the tributary interface plate dissimilarly, includes but not limited to E1 tributary interface plate, E2 tributary interface plate, E3 tributary interface plate, E4 tributary interface plate etc.; For SONET, include but not limited to T1 tributary interface plate, T2 tributary interface plate, T3 tributary interface plate, T4 tributary interface plate etc.Simultaneously, though all types of mapping chip differences in the design, tributary interface plate system side adopts unified VC-4/AU-4 bus; And the branch service adaptation board also adopts unified VC-4/AU-4 bus and the butt joint of tributary interface plate, the system side of adaptation board then to adopt STM-N bus and backboard butt joint, service signal is transferred to other functional unit, as cross unit.Therefore, a branch service adaptation board can compatible various types of tributary interface plates.
Below in conjunction with accompanying drawing system of the present invention is illustrated.
As shown in Figure 3, Fig. 3 is the structural relation example schematic of the described system of the embodiment of the invention and other integrated circuit boards; A SDH equipment need be handled E1, E2 and the E3 business of PDH, and the PDH business inserts from interface board, carries out business by cross board and intersects, and the Optical Line Board OL that sends STM-16 to is finished to the network downstream transmission.
Be exactly specifically, aspect the processing of PDH business interface, need design E1, E2 and E3 totally three kinds of service interface boards, and a kind of branch service adaptation board.Three types tributary interface plate is connected with the branch road adaptation board by bus respectively, and the bus between described tributary interface plate and the branch service adaptation board can be the VC-4 bus of 77.76Mhz in the specific implementation process of the embodiment of the invention;
At the professional receive direction of PDH, the data of E1/E3/E3 user interface are finished power match through the analog interface circuit unit, and the signal after the coupling carries out clock, data recovery and finishes code conversion and decoding processing through the interface processing unit.Signal enters the mapping chip and carries out the mapping of tributary signal to the VC-4 data afterwards, and VC-4/AU-4 data-signal and clock, the frame head information finished after the mapping are sent to the branch service adaptation board by backboard in the lump.
The PDH business is in the branch service adaptation board, by the adaptive framing encapsulation process of finishing the VC-4 signal to STM-4 of branch service, STM-4 signal after the framing encapsulation finishes is sent to cross board via backboard again, after the cross board interconnection, finally be sent to the STM-16 Optical Line Board OL and transmit by optical fiber.
At the professional sending direction of PDH, deliver to the branch service adaptation board from the business datum that the STM-16 Optical Line Board OL is sent here by cross board, after finishing business datum and peeling off the STM-4 encapsulation, VC-4 data, clock and frame head information are transferred to the tributary interface plate handle.All types of tributary interface plates solve corresponding tributary signal from fourth stage virtual container or fourth stage administrative unit, and finish code conversion, clock and insert and encoding process, through standard interface categorical datas such as formation E1/E3/E4 after the power match, send to user side by analog interface circuit.
Interface between tributary interface plate and the branch road adaptation board is unified VC-4 bus, interface between branch road adaptation board and the cross board is unified STM-4 bus, so no matter the tributary interface plate is any type, no matter what handle is E1, E2 or E3 business, by unified VC-4 bus interface, can directly dock with professional adaptation board.
Below the described method of the embodiment of the invention is described.
The described method of the embodiment of the invention specifically comprises:
At SDH transmission equipment branch service adaptation board and polytype tributary interface plate are set, described polytype tributary interface plate is connected with the branch service adaptation board by identical bus respectively; Be provided with analog interface circuit unit, interface processing unit and map unit in the described tributary interface plate.
At the professional receive direction of plesiochronous digital system branch, after described tributary interface plate carries out Business Processing with the service signal that receives, send to connected branch service adaptation board by the signal of described bus after with described processing; Described branch service adaptation board carries out frame encapsulation to the received signal, and the signal after the transmit frame encapsulation carries out business intersection to cross board, and sends other integrated circuit boards (such as, STM-16 Optical Line Board OL) to and carry out Business Processing or transmission.
At the professional sending direction of accurate synchrodata system branch, from other integrated circuit boards (such as, the STM-16 Optical Line Board OL) business datum of sending here is delivered to the branch service adaptation board by cross board, described branch service adaptation board is removed the frame encapsulation to the business datum that receives, and data, clock and the frame head information that releasing obtains is sent to the tributary interface plate by described bus; Described tributary interface plate carries out Business Processing to the data, clock and the frame head information that receive.
Specific implementation process for the described method of the embodiment of the invention elaborates in the system in front, just repeats no more herein.Here the embodiment of the invention only is applied as environment with SDH equipment and is illustrated, but it will be recognized by those skilled in the art that described system and method is equally applicable to the SONET transmission equipment in the invention process.
In sum, the described system and method for the embodiment of the invention is handled by modular construction, can bring following technique effect:
Interface is handled and professional adaptive the separation, and different interface boards can use identical professional adaptation board, reduces the workload of product design, shortens product development cycle.For example, all can to use unified professional adaptation board to carry out business adaptive for the interface board of the interface board of E1 and E3.Like this, because interface is handled and professional adaptive the separation, the interface board function of E1 and E3 is simplified, and the design work amount reduces.
Interface is handled and is separated with professional adaption function, and the interface board function is simplified, and can reduce the workload of production test; And different interface boards can use identical professional adaptation board, can reduce inventory risk.
The professional adaptation board structure of simplifying is convenient to develop more value-added functionality, leads directly to as branch service etc.
Be convenient to smooth upgrade, when System Backplane need be upgraded, only need to change professional adaptation board and just can carry tributary interface; Simultaneously also make things convenient for the tributary interface plate to be applied to different series product, protected the investment of operator to greatest extent.
Because what insert is the PDH business, capacity is low, and data rate is not high, even adopt the comparatively VC-4/AU-4 bus of low speed between tributary interface plate and the branch service adaptation board, does not worry the problem that the backplane interface wiring quantity is too high yet.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (9)
1. the connecting system of a PDH branch service is characterized in that, comprising: branch service adaptation board, polytype tributary interface plate, and described polytype tributary interface plate is connected with the branch service adaptation board by identical bus respectively,
At the professional receive direction of plesiochronous digital system branch, after the service signal that described tributary interface plate is used for receiving carried out Business Processing, the signal after will handling by described bus sent to connected branch service adaptation board; Described branch service adaptation board is used for carrying out to the received signal the frame encapsulation, and sends the signal after the encapsulation;
At the professional sending direction of accurate synchrodata system branch, described branch service adaptation board is used for the service signal that receives is removed the frame encapsulation, and the signal that releasing obtains is sent to connected tributary interface plate by described bus; Described tributary interface plate is used for the signal that receives is carried out Business Processing.
2. system according to claim 1 is characterized in that, the bus type between described tributary interface plate and the branch service adaptation board is fourth stage virtual container bus or fourth stage administrative unit bus.
3. system according to claim 2 is characterized in that, described tributary interface plate specifically comprises:
The analog interface circuit unit, at the professional receive direction of plesiochronous digital system branch, described analog interface circuit unit is used for the service signal that inserts from described tributary interface plate is carried out power match; At the professional sending direction of accurate synchrodata system branch, described analog interface circuit unit is used for the service signal that obtains from the interface processing unit is carried out power match;
The interface processing unit, at the professional receive direction of plesiochronous digital system branch, described interface processing unit is used for carrying out clock, data recovery, code conversion and decoding through the signal after the analog interface circuit units match; At the professional sending direction of accurate synchrodata system branch, described interface processing unit is used for the tributary signal that solves through map unit is carried out code conversion, clock insertion and coding;
Map unit, at the professional receive direction of plesiochronous digital system branch, described map unit is used for and will carries out the mapping of tributary signal to fourth stage virtual container data or fourth stage administrative unit data through the signal after the interface processing unit processes; At the professional sending direction of accurate synchrodata system branch, described map unit is used for solving corresponding tributary signal from fourth stage virtual container or fourth stage administrative unit.
4. system according to claim 1 is characterized in that, described polytype tributary interface plate comprises following two kinds of tributary interface plates at least:
E1 tributary interface plate, E2 tributary interface plate, E3 tributary interface plate, E4 tributary interface plate; Perhaps, described polytype tributary interface plate comprises following two kinds of tributary interface plates at least:
T1 tributary interface plate, T2 tributary interface plate, T3 tributary interface plate, T4 tributary interface plate.
5. the cut-in method of a PDH branch service is characterized in that, comprising:
Branch service adaptation board and polytype tributary interface plate are set in SDH (Synchronous Digital Hierarchy)/synchronous optical network transmission equipment, and described polytype tributary interface plate is connected with the branch service adaptation board by identical bus respectively;
At the professional receive direction of plesiochronous digital system branch, after described tributary interface plate carries out Business Processing with the service signal that receives, send to connected branch service adaptation board by the signal of described bus after with described processing; Described branch service adaptation board carries out the frame encapsulation to the received signal, and sends the signal after the encapsulation; And/or,
At the professional sending direction of accurate synchrodata system branch, described branch service adaptation board is removed the frame encapsulation to the business datum that receives, and the signal that releasing obtains is sent to the tributary interface plate by described bus; Described tributary interface plate carries out Business Processing to the signal that receives.
6. method according to claim 5 is characterized in that, the bus type between described tributary interface plate and the branch service adaptation board is fourth stage virtual container bus or fourth stage administrative unit bus.
7. method according to claim 6 is characterized in that, at the professional receive direction of plesiochronous digital system branch, described tributary interface plate specifically comprises the step that the service signal that receives carries out Business Processing:
The service signal that inserts from described tributary interface plate is carried out power match, and send the signal after the coupling;
Signal after the coupling is carried out clock, data recovery, code conversion and decoding;
Carry out signal map, and the signal after will shining upon and clock, frame head information send to the branch service adaptation board together.
8. method according to claim 7 is characterized in that, at the professional sending direction of accurate synchrodata system branch, described tributary interface plate specifically comprises the step that the signal that receives carries out Business Processing:
Solve corresponding tributary signal according to the service signal that receives;
Described tributary signal is carried out code conversion, clock insertion and coding;
Tributary signal is carried out power match.
9. system according to claim 5 is characterized in that, described polytype tributary interface plate comprises following two kinds of tributary interface plates at least:
E1 tributary interface plate, E2 tributary interface plate, E3 tributary interface plate, E4 tributary interface plate; Perhaps, described polytype tributary interface plate comprises following two kinds of tributary interface plates at least:
T1 tributary interface plate, T2 tributary interface plate, T3 tributary interface plate, T4 tributary interface plate.
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| CN2007101640221A CN101137247B (en) | 2007-10-16 | 2007-10-16 | Access system and method for PDH branch service |
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| CN2007101640221A CN101137247B (en) | 2007-10-16 | 2007-10-16 | Access system and method for PDH branch service |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102739335A (en) * | 2012-06-14 | 2012-10-17 | 北京润光泰力科技发展有限公司 | Method and device for designing back plate of synchronous digital hierarchy (SDH) optical fiber transmission system |
| CN102902646A (en) * | 2012-09-17 | 2013-01-30 | 大唐移动通信设备有限公司 | Board communication method, board and method and system for loading FPGA (Field-Programmable Gate Array) |
| CN104468218A (en) * | 2014-12-12 | 2015-03-25 | 国家电网公司 | PCM device based on transmission equipment |
| CN109039753A (en) * | 2018-08-20 | 2018-12-18 | 郑州云海信息技术有限公司 | A kind of communication means and communication equipment based on Ethernet |
| WO2019052539A1 (en) * | 2017-09-14 | 2019-03-21 | 中兴通讯股份有限公司 | Signal processing device and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1302630C (en) * | 2003-11-15 | 2007-02-28 | 华为技术有限公司 | Method for realizing different speed PDH service intercommunication in synchrounic optical network |
| CN1968065B (en) * | 2006-06-23 | 2011-04-06 | 华为技术有限公司 | Microwave communication service transmission method and system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102739335A (en) * | 2012-06-14 | 2012-10-17 | 北京润光泰力科技发展有限公司 | Method and device for designing back plate of synchronous digital hierarchy (SDH) optical fiber transmission system |
| CN102739335B (en) * | 2012-06-14 | 2014-12-10 | 北京润光泰力科技发展有限公司 | Method and device for designing back plate of synchronous digital hierarchy (SDH) optical fiber transmission system |
| CN102902646A (en) * | 2012-09-17 | 2013-01-30 | 大唐移动通信设备有限公司 | Board communication method, board and method and system for loading FPGA (Field-Programmable Gate Array) |
| CN102902646B (en) * | 2012-09-17 | 2015-12-09 | 大唐移动通信设备有限公司 | The loading method of board communication means and board, FPGA and system |
| CN104468218A (en) * | 2014-12-12 | 2015-03-25 | 国家电网公司 | PCM device based on transmission equipment |
| WO2019052539A1 (en) * | 2017-09-14 | 2019-03-21 | 中兴通讯股份有限公司 | Signal processing device and method |
| CN109039753A (en) * | 2018-08-20 | 2018-12-18 | 郑州云海信息技术有限公司 | A kind of communication means and communication equipment based on Ethernet |
| CN109039753B (en) * | 2018-08-20 | 2021-10-15 | 郑州云海信息技术有限公司 | Communication method and communication equipment based on Ethernet |
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| CN101137247B (en) | 2011-05-11 |
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Effective date of registration: 20151203 Address after: 430223 East Lake Wuhan New Technology Development Zone Hua Hua Road, Optics Valley Industrial Park, ZTE building, building No. 3, building Patentee after: WUHAN ZHONGXING SOFTWARE CO., LTD. Address before: 518057, Nanshan District high tech Industrial Park, Guangdong province Shenzhen science and technology south road Zhongxing building A block 5 Patentee before: ZTE Corporation |