CN1909542A - Circuit for realizing synchronization by using modem in shrouding system and its method - Google Patents
Circuit for realizing synchronization by using modem in shrouding system and its method Download PDFInfo
- Publication number
- CN1909542A CN1909542A CNA2006100368818A CN200610036881A CN1909542A CN 1909542 A CN1909542 A CN 1909542A CN A2006100368818 A CNA2006100368818 A CN A2006100368818A CN 200610036881 A CN200610036881 A CN 200610036881A CN 1909542 A CN1909542 A CN 1909542A
- Authority
- CN
- China
- Prior art keywords
- signal
- modulator
- demodulator
- control
- covering system
- 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
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a circuit for using modulator to realize synchronization in TD-SCDMA cover system, wherein it comprises a modulator, a coupler and a signal adjusting module; the modulator outputs synchronous instruct signal and the second time-slit switch point of TD-SCDMA to the connected signal adjusting module; said signal adjusting module, based on input synchronous instruct signal and switch point information, generates multi-path switch control signal to the ascending and descending chains; when the base station signal is descending time slit, closing the ascending chain and opening the descending chain; or else, closing the descending chain and opening the ascending chain. In addition, the invention also discloses a relative method. Compared with traditional technique, the invention has low cost.
Description
[technical field]
The present invention relates to moving communicating field, relate in particular to TD-SCDMA repeater covering system and utilize modulator-demodulator to realize synchronous circuit and method thereof.
[technical background]
Fast development along with China's mobile communication cause, the 2nd present generation or 2.5 third-generation mobile communication systems are at the great demand that all can not satisfy society aspect capacity and the professional ability, and therefore the 2nd generation or 2.5 third-generation mobile communication systems will be replaced by the third generation (3G) mobile communication system.In order progressively to be evolved into third generation network neatly on the basis of second generation network, 3G has three communication standard: WCDMA, cdma2000, TD-SCDMA.TD-SCDMA (Time Division-Synchronous CodeDivision Multiple Access, TD SDMA, abbreviation TD-SCDMA) technology is proposed by China and formally became the 3G (Third Generation) Moblie international standard in 2000, and the system that follows this standard development has the very high availability of frequency spectrum and lower cost.
TD-SCDMA is called as low spreading rate (1.28MCps, 1.28 million chips/sec) time division multiplexing counting scheme in the ITU standard.
The Elementary Time Unit of TD-SCDMA is a radio frames, and frame length is 10ms, and each radio frames is divided into two 5ms standard subframes, and the structure of two standard subframes is identical.Single subframe is made up of 7 conventional time slots of identical time span and three kinds of special time slots (DWPTS, GP and UPPTS), and each subframe has two transfer points, and up-downgoing can be asymmetric.
TS0 is down direction always, and TS1 is up direction always, TS2, TS3 ... TS6 will can be appointed as up direction or down direction dynamically according to actual business requirement.DwPTS is a down direction, and UpPTS is a up direction, and the centre by first switching point GP separately.
As the key player who is played the part of in second generation mobile communication covers, covering systems such as repeater will play important effect in 3-G (Generation Three mobile communication system).Because TD-SCDMA has special physical channel structure, can change the time slot switching point neatly according to the needs of business, satisfies the needs of up-downgoing non-symmetrical service; The signal that this different time-gap switches basically can real time altering, can dispose in advance according to different service needed.Therefore, time synchronized plays a very important role to the TD-SCDMA tool, especially needs to realize the accurate switching of uplink and downlink timeslot as the TD-SCDMA covering system of trunking, amplifies and forwarding capability so that finish seamless signal.
Traditional TD-SCDMA covering system realizes that synchronous mode all is to realize by independent synchronization module, and the technology of this scheme constitutes very complicated, and cost is also higher.
In actual applications, owing to need carry out remote monitoring to the TD-SCDMA covering system, TD-SCDMA radio modem (be called for short " MODEM ") need be installed in covering system, the TD-SCDMA covering system be carried out the remote parameter setting and various monitoring functions such as reads realizing.And MODEM itself can provide the frame synchronization index signal, therefore, can consider to utilize MODEM to carry out system synchronization.
[summary of the invention]
Purpose of the present invention just is the defective at traditional method for synchronous existence, provides and utilizes modulator-demodulator to realize synchronous circuit in simple, the lower-cost covering system of a kind of technology.
Another object of the present invention is to provide a kind of to utilizing modulator-demodulator to realize the method for synchronous circuit in the described covering system.
First purpose of the present invention is achieved by the following technical solution:
Utilize modulator-demodulator to realize synchronous circuit in the covering system of the present invention, comprise modulator-demodulator, coupler and signal adjusting module;
Described coupler is connected with any place of down link, transmits it to the modulator-demodulator that is attached thereto after obtaining signal;
Described modulator-demodulator is connected with Monitor And Control Subsystem in the covering system, and in addition, second time slot switching point information also exporting synchronous indicating signal and TD-SCDMA signal is to the signal adjusting module that is attached thereto;
Described signal adjusting module produces switch-over control signal to up link and down link according to the synchronous indicating signal of input and the switching point information of second time slot, when base station signal is descending time slot, the control up link is closed, down link is opened, otherwise, then control down link and close and make up link in opened condition.
Particularly, described signal adjusting module comprises that control signal generating module and signal driver module constitute, the input of this control signal generating module is connected with the output of modulator-demodulator, output then is connected with the signal driver module, and the signal driver module then is connected with up link with down link respectively;
Control signal generating module produces the switch-over control signal that covering system needs according to synchronous indicating signal and second time slot switching point information of receiving, and this switch-over control signal is transferred to the signal driver module;
The signal driver module converts described switch-over control signal the signal of telecommunication to and exports up link to and down link.
Generally speaking, the switching point information of second time slot of described TD-SCDMA can be produced by modulator-demodulator, and is carried by described synchronous indicating signal.Also can be another situation: described control signal generating module also be connected with described Monitor And Control Subsystem, the switching point information of second time slot of TD-SCDMA by Monitor And Control Subsystem by modulator-demodulator by the remote monitoring center setting, and then it directly is transferred to control signal generating module.
The level signal that described signal driver module produces is differential signal or CMOS level signal.
Realize being connected by I2C or SPI data/address bus between described control signal generating module and Monitor And Control Subsystem, control signal generating module can be obtained the monitor message of Monitor And Control Subsystem and report corresponding state thus, also can realize connecting and indicating corresponding control information by Monitor And Control Subsystem by the GPIO pin.
Described control signal generating module can be used any one realization among CPLD, EPLD and the FPGA.
The present invention is applicable to that wireless discharging-directly station, optical fiber repeater, electric light mixing repeater, tower amplifier and trunk amplifier are in the covering system of type.
Another object of the present invention is achieved by the following technical solution:
Utilize modulator-demodulator to realize synchronous method in a kind of covering system of the present invention, comprise the steps:
(1), after being coupled to part signal, down link any transfers to modulator-demodulator;
(2), produce the synchronous indicating signal that comprises the control information of second time slot switching point of TD-SCDMA downstream signal by modulator-demodulator;
(3), produce synchronous switch-over control signal according to described synchronous indicating signal and the control information of second time slot switching point;
(4), this switch-over control signal is converted to level signal or differential signal and transfer to uplink downlink;
(5), opening or closing corresponding link according to described level signal or differential signal realizes synchronously, promptly when base station signal was descending time slot, the control up link was closed, and down link is opened, otherwise, then control down link and close and make up link in opened condition.
Wherein, in step (2), the switching point information of second time slot of described TD-SCDMA by the Monitor And Control Subsystem of covering system by modulator-demodulator by the remote monitoring center setting, and then it directly is transferred to control signal generating module.
Compared with prior art, the present invention possesses following advantage: the function that the frame synchronization index signal can be provided based on modulator-demodulator in the covering system, by the extremely low signal adjusting module of design cost, produce the multichannel switch-over control signal of covering system needs according to the frame synchronization index signal of modulator-demodulator generation, the uplink and downlink timeslot that can realize the TD-SCDMA covering system exactly switches, technology is simple, and cost also is minimized greatly.
[description of drawings]
Theory diagram when Fig. 1 is applied to covering system for the present invention;
Fig. 2 is a theory diagram of the present invention, and wherein coupler is not shown;
The schematic diagram of the switch-over control signal of the uplink and downlink timeslot that Fig. 3 is provided for signal driver module of the present invention.
[embodiment]
The present invention is further illustrated below in conjunction with drawings and Examples:
The invention discloses and utilize modulator-demodulator to realize synchronous circuit in the covering system of a kind of TD-SCDMA repeater.This circuit has mainly adopted modulator-demodulator and signal driver module, utilizes the corresponding signal process technology, realizes the frame synchronization to the TD-SCDMA signal.Distribute the not frame structure characteristics of real-time change according to the TD-SCDMA uplink and downlink timeslot, control corresponding mains switch at corresponding switching point and switch, thereby between up-downgoing, switch.
See also Fig. 1, the present invention is applied in the TD-SCDMA repeater covering system, and this repeater covering system includes Monitor And Control Subsystem (not shown), coupler 103, near-end built-up circuit 104, descending amplifying circuit 105, far-end built-up circuit 106 and up amplifying circuit 107.Form down link between described near-end built-up circuit 104, descending amplifying circuit 105 and the far-end built-up circuit 106, behind the base station down signal process near-end built-up circuit 104, after carrying out power amplification by descending amplifying circuit 105, finish covering through 106 outputs of far-end built-up circuit again; Then form up link between described far-end built-up circuit 106, up amplifying circuit 107 and the near-end built-up circuit 104, upward signal is behind far-end built-up circuit 106, after handling by up amplifying circuit 107, go upward to the base station through near-end built-up circuit 104 again.。
Described coupler 103 places before the near-end built-up circuit 104, also can place any place of down link, is as the criterion can be coupled to downstream signal.
In addition, also include wireless modulator-demodulator 101 (being called for short " MODEM ") and signal adjusting module 102 in the covering system, the output of described coupler 103 is connected with the input of modulator-demodulator 101, and the output of modulator-demodulator 101 is connected with the input of Monitor And Control Subsystem (not shown) and signal adjusting module 102 respectively.Coupler 103, modulator-demodulator 101 and signal adjusting module 102 have constituted our bright circuit.
See also Fig. 2, described signal adjusting module 102 comprises control signal generating module 203 and signal driver module 204, control signal generating module 203 provides input to be connected with described modulator-demodulator 101, and provides output to be connected with signal driver module 204.204 whiles of described signal driver module are connected with up link with down link, signal is transferred in near-end built-up circuit 104, far-end built-up circuit 106, descending amplifying circuit 105 and the up amplifying circuit 107, control the on off state of self for the level signal of these parts basis signal driver modules 204 generations.
Control signal generating module 203 can use chips such as CPLD, EPLD, FPGA to realize; Control signal generating module 203 can be communicated by letter with Monitor And Control Subsystem by data/address buss such as I2C, SPI, obtains the control information of Monitor And Control Subsystem and reports corresponding state, also can indicate corresponding control information by Monitor And Control Subsystem by the GPIO pin.
Please in conjunction with Fig. 1 and Fig. 2, the repeater covering system is coupled device 103 with the TD-SCDMA downstream signal of base station and is coupled to part signal, export to radio modem 101 by coupler 103, modulator-demodulator 101 outputs one road synchronous indicating signal is given signal adjusting module 102; Signal adjusting module 102 is controlled near-end built-up circuit 104, descending amplifying circuit 105, far-end built-up circuit 106 and up amplifying circuit 107 simultaneously according to the synchronous indicating signal generation multichannel switch-over control signal of input; When base station signal is descending time slot, control then that up link is closed, down link is opened; Otherwise, then control down link and close and make up link be out state.
The synchronous indicating signal that described modulator-demodulator 101 provides is in comprising the TD-SCDMA wireless sub-frame first time slot switching point information, also comprised second time slot switching point information, so, control signal generating module 203 can export signal driver module 204 to according to second time slot switching point information and synchronous indicating signal generation control signal.
The described synchronous indicating signal that is produced by modulator-demodulator 101 also can not comprise the control information of described second time slot switching point, but earlier sending the Monitor And Control Subsystem of covering system to by common uart interface by modulator-demodulator 101, the control signal that Monitor And Control Subsystem sends this information to signal adjusting module 102 again produces submodule 203; Modulator-demodulator 101 also can both be can't help the frame synchronization index signal and be carried second time slot switching point information and also do not transmit this information by the uart interface, but obtain by remote monitoring, and then this information is sent to the control signal generating module 203 of signal adjusting module 102 by the Monitor And Control Subsystem of covering system.
Below in conjunction with Fig. 2, radio modem 101 and signal adjusting module 102 realize among elaboration the present invention function and workflow:
1) radio modem 101 is exported one tunnel frame synchronization index signal to the control signal generating module 203 in the signal adjusting module 102 according to the TD-SCDMA signal that receives.
2) control signal generating module 203 receives the frame synchronization index signal (or the while is according to control information of the Monitor And Control Subsystem (not shown) that receives) of radio modem 101 inputs, should include the control information of second time slot switching point in synchronous indicating signal or the control information, so that a plurality of switch-over control signals that produced covering system in view of the above and needed by control signal generating module 203 transfer to signal driver module 204.According to the different qualities of each switch of needs control in the covering system, the unlatching of each signal and closing timing can be different in a plurality of control signals of generation.
Second time slot switching point information of TD-SCDMA signal can be comprised by the frame synchronization index signal of radio modem 101 inputs, also can comprise by the control information of Monitor And Control Subsystem input.Therefore, control signal generating module 203 obtains second time slot switching point and both can obtain by the UART interface of radio modem 101, also can be by the remote monitoring information acquisition.
3) signal driver module 204 is converted to the level signal that system needs with the switch-over control signal of control signal generating module 203 inputs, can be differential signal or CMOS level signal.The switch-over control signal of signal driver module 204 outputs promptly can be used for controlling the uplink downlink switching of covering system.
Fig. 3 is the switch-over control signal of the uplink and downlink timeslot of signal adjusting module of the present invention.Open descending/up link again after closing the Uplink/Downlink of operating state among the present invention earlier, the time-delay of service time increases the isolation of up-downgoing circuit, to avoid the self-excitation of repeater; As an example of using, control that to open up amplifying circuit control line after effective 6 chip of control line that descending amplifying circuit cuts out effective; Control after effective 4 chip of control line that up amplifying circuit cuts out, it is effective to control the control line that descending amplifying circuit opens.In addition, can change effective chip number of the control line that descending amplifying circuit and up amplifying circuit close by corresponding software.
In addition, in the above-mentioned example that is applied to the repeater covering system, can also take out and utilize modulator-demodulator to realize synchronous method in the covering system of the present invention, comprise the steps:
(1), after down link any is coupled to part signal, transfer to modulator-demodulator, this function is generally finished by coupler 103;
(2), can produce the synchronous indicating signal that comprises the control information of second time slot switching point of TD-SCDMA downstream signal by modulator-demodulator; The switching point information of second time slot of TD-SCDMA also can be monitored the back by modulator-demodulator to covering system by the Monitor And Control Subsystem of covering system and obtain;
(3), produce synchronous switch-over control signal, this step can realize by the special-purpose control signal generating module of exploitation according to described synchronous indicating signal and the control information of second time slot switching point;
(4), this switch-over control signal is converted to level signal or differential signal and transfer to uplink downlink;
(5), opening or closing corresponding link according to described level signal or differential signal realizes synchronously, promptly when base station signal was descending time slot, the control up link was closed, and down link is opened, otherwise, then control down link and close and make up link in opened condition.
In sum, the present invention can be the TD-SCDMA covering system provide a kind of simple and performance is preferable synchronously and method for handover control, make the TD-SCDMA system can realize normal uplink and downlink switching controls.The present invention is applicable to wireless discharging-directly station, optical fiber repeater, in the covering systems such as electric light mixing repeater, tower amplifier and trunk amplifier.
The present invention is described in narrative mode all the time, and wherein employed term is intended to describe and unrestricted.According to above description, can make many further modifications to the present invention, also can do many variations according to actual needs.Therefore, in additional claim scope, the present invention can adopt various implementation to specifically described embodiment.
Claims (9)
1, utilizes modulator-demodulator to realize synchronous circuit in a kind of covering system, it is characterized in that comprising modulator-demodulator, coupler and signal adjusting module;
Described coupler is connected with any place of down link, transmits it to the modulator-demodulator that is attached thereto after obtaining signal;
Described modulator-demodulator is connected with Monitor And Control Subsystem in the covering system, and in addition, second time slot switching point information also exporting synchronous indicating signal and TD-SCDMA signal is to the signal adjusting module that is attached thereto;
Described signal adjusting module produces switch-over control signal to up link and down link according to the synchronous indicating signal of input and the switching point information of second time slot, when base station signal is descending time slot, the control up link is closed, down link is opened, otherwise, then control down link and close and make up link in opened condition.
2, utilize modulator-demodulator to realize synchronous circuit in the covering system according to claim 1, it is characterized in that:
Described signal adjusting module comprises that control signal generating module and signal driver module constitute, the input of this control signal generating module is connected with the output of modulator-demodulator, output then is connected with the signal driver module, and the signal driver module then is connected with up link with down link respectively;
Control signal generating module produces the switch-over control signal that covering system needs according to synchronous indicating signal and second time slot switching point information of receiving, and this switch-over control signal is transferred to the signal driver module;
The signal driver module converts described switch-over control signal the signal of telecommunication to and exports up link to and down link.
3, utilize modulator-demodulator to realize synchronous circuit in the covering system according to claim 2, it is characterized in that: the switching point information of second time slot of described TD-SCDMA can be produced by modulator-demodulator, and is carried by described synchronous indicating signal; The switching point information of second time slot of described TD-SCDMA can also be by Monitor And Control Subsystem by modulator-demodulator by the remote monitoring center setting, and then it directly is transferred to control signal generating module.
4, realize synchronous TD-SCDMA covering system according to any described modulator-demodulator that utilizes of claim 2 to 3, it is characterized in that: described level signal is differential signal or CMOS level signal.
5, realize synchronous TD-SCDMA covering system according to any described modulator-demodulator that utilizes of claim 2 to 3, it is characterized in that any one realization among CPLD, EPLD and the FPGA of described control signal generating module.
6, realize synchronous TD-SCDMA covering system according to any described modulator-demodulator that utilizes in the claim 1 to 3, it is characterized in that: realize being connected by I2C or SPI data/address bus between described control signal generating module and Monitor And Control Subsystem, control signal generating module can be obtained the monitor message of Monitor And Control Subsystem and report corresponding state thus, also can realize connecting and indicating corresponding control information by Monitor And Control Subsystem by the GPIO pin.
7, the modulator-demodulator that utilizes according to claim 6 is realized synchronous TD-SCDMA covering system, it is characterized in that the present invention is applicable to that wireless discharging-directly station, optical fiber repeater, electric light mixing repeater, tower amplifier and trunk amplifier are in the covering system of type.
8, utilize modulator-demodulator to realize synchronous method in a kind of covering system in the covering system, it is characterized in that comprising the steps:
(1), after being coupled to part signal, down link any transfers to modulator-demodulator;
(2), produce the synchronous indicating signal that comprises the control information of second time slot switching point of TD-SCDMA downstream signal by modulator-demodulator;
(3), produce synchronous switch-over control signal according to described synchronous indicating signal and the control information of second time slot switching point;
(4), this switch-over control signal is converted to level signal or differential signal and transfer to uplink downlink;
(5), opening or closing corresponding link according to described level signal or differential signal realizes synchronously, promptly when base station signal was descending time slot, the control up link was closed, and down link is opened, otherwise, then control down link and close and make up link in opened condition.
9, utilize modulator-demodulator to realize synchronous method in the covering system according to claim 8, it is characterized in that in the step (2), the switching point information of second time slot of described TD-SCDMA by the Monitor And Control Subsystem of covering system by modulator-demodulator by the remote monitoring center setting, and then it directly is transferred to control signal generating module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100368818A CN100566318C (en) | 2006-08-02 | 2006-08-02 | Utilize modulator-demodulator to realize synchronous circuit and method thereof in the covering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100368818A CN100566318C (en) | 2006-08-02 | 2006-08-02 | Utilize modulator-demodulator to realize synchronous circuit and method thereof in the covering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1909542A true CN1909542A (en) | 2007-02-07 |
| CN100566318C CN100566318C (en) | 2009-12-02 |
Family
ID=37700533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100368818A Expired - Fee Related CN100566318C (en) | 2006-08-02 | 2006-08-02 | Utilize modulator-demodulator to realize synchronous circuit and method thereof in the covering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100566318C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640931B (en) * | 2009-08-26 | 2012-06-27 | 普天信息技术研究院有限公司 | Method for keeping uplink synchronization |
-
2006
- 2006-08-02 CN CNB2006100368818A patent/CN100566318C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640931B (en) * | 2009-08-26 | 2012-06-27 | 普天信息技术研究院有限公司 | Method for keeping uplink synchronization |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100566318C (en) | 2009-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102547778B (en) | Wireless communication system of flat network architecture, method and expansion unit | |
| CN101557597B (en) | Multimode converging and combining method and device thereof | |
| CN101453799B (en) | Multi-carrier digital frequency-selection radio frequency pulling system and signal processing method thereof | |
| CN102547716A (en) | Wireless communication system and method for flat network architecture and extend unit | |
| CN101039134A (en) | Method for realizing transmitter diversity using two remote RF units | |
| WO2012092810A1 (en) | Multimode digital radio-frequency remote system | |
| CN201127027Y (en) | Multiple-carrier digital frequency-selecting radio frequency extension system | |
| CN1812292A (en) | TD-SCDMA system base station radio-frequency digital long-drawn optical fiber transmitting method and apparatus | |
| CN200973095Y (en) | Mobile communication digital optical fibre directly amplifying application system | |
| CN101707499B (en) | Data transmission method and system for realizing compatibility of CDMA and WCDMA | |
| CN203608204U (en) | Indoor optical fiber distribution system | |
| CN105142155B (en) | Optical fiber distribution system and method | |
| CN1741417A (en) | Apparatus capable of constituting multi-mobile communication equipment and constituted mobile communication equipment thereof | |
| CN1909542A (en) | Circuit for realizing synchronization by using modem in shrouding system and its method | |
| CN1889387A (en) | Correlated detection synchronous module of time division synchronous code division multiple access covering system | |
| CN1889390A (en) | Time division synchronous code division multiple access covering system applying related detection synchronization | |
| CN105656558B (en) | Realize the optical fiber distribution system and method for multiple communication standard accesses | |
| CN101594590A (en) | Be used for the data transmission method of wireless base station and the wireless base station of this method of application | |
| CN1909543A (en) | TD-SCDMA shrouding system realizing synchronization by using modem | |
| CN200969587Y (en) | TD-SCDMA overlay system realized synchronization using modem | |
| CN206962821U (en) | Tunnel communication network system based on lightwave communication | |
| CN105141362B (en) | Realize the optical fiber distribution system and method for the different location information source access of multichannel | |
| CN105101230B (en) | Realize the wireless communication system and method for multiple communication standard accesses | |
| CN101409667B (en) | Data interactive method, equipment and system for radio base station | |
| CN200966062Y (en) | A time division synchronous code division multiple access coverage system with the relevant wave detection synchronous functions |
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 | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160616 Address after: Nansha District Fengze road Guangzhou city Guangdong province 510000 No. 106 (self building No. 1) X1301-F322 (only for office use) (JM) Patentee after: GUANGZHOU ZHONGDING MULIN NETWORK TECHNOLOGY CO.,LTD. Address before: 510663 Guangzhou Science City, Guangdong Shenzhou Road, No. 10 Patentee before: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20210802 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |