CN202385288U - Code division multiple access (CDMA) fifth-class wire high-power distribution system - Google Patents
Code division multiple access (CDMA) fifth-class wire high-power distribution system Download PDFInfo
- Publication number
- CN202385288U CN202385288U CN2011205257697U CN201120525769U CN202385288U CN 202385288 U CN202385288 U CN 202385288U CN 2011205257697 U CN2011205257697 U CN 2011205257697U CN 201120525769 U CN201120525769 U CN 201120525769U CN 202385288 U CN202385288 U CN 202385288U
- Authority
- CN
- China
- Prior art keywords
- circuit
- 800mhz
- descending
- power
- low noise
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The utility model discloses a code division multiple access (CDMA) fifth-class wire high-power distribution system which comprises an access unit and a high-power coverage unit; and one end of the access unit is led into a message source through a adopting method of being coupled with a base station (or a base station remote system), and the other end of the access unit is connected with the high-power coverage unit through a fifth-class wire. One end of the high-power coverage unit is connected with the access unit through the fifth-class wire, and the other end of the high-power coverage unit is provided with an 800MHz retransmission antenna which is used for resending a downlink 800MHz radio frequency signal to a communication blind area after the high-power amplification is carried out on the downlink 800MHz radio frequency signal. The system has the advantages of small equipment size, stable performance, small impact on a network, low power consumption, environmental protection, energy saving, large coverage area, good coverage effect, relatively lower price and the like, and can well carry out signal coverage on a CDMA outdoor signal blind area. And the weak coverage in communities and villages in cities and other problems can be well solved through the simple wiring characteristic of the fifth-class wire resource and through the integration with an embellished antenna.
Description
Technical field
The utility model relates to wireless communication technology field, is specifically related to a kind of category-5 cable resource of utilizing and carries out the signal transmission, and the high-power compartment system of CDMA category-5 cable that signal covers is carried out in CDMA outdoor signal blind area.This system also has the category-5 cable of utilization resource wiring characteristic of simple, combines application problem such as to cover a little less than fine solution sub-district, the villages within the city with embellished antenna.
Background technology
Along with improving constantly of living standards of the people, and strengthen for the consciousness of wireless radiation, though the wireless radiation of networks such as CDMA is strict according to national standard, the resident for wireless radiation particularly antenna to have produced a kind of conflicts psychological.Add and adopt traditional network optimization solution that use the repeater to carry out the network optimization and cover, the facility that needs to destroy original sub-district carries out the cloth feeder line, and the construction more complicated, so property is coordinated very difficulty.Villages within the city's floor interval is little in addition, and irregular arrangement is that the CDMA signal covers one of the most scabrous zone; Traditional antenna feeder distribution+embellished antenna scheme, the construction sound is big, and antenna feeder construction and power supply universal time coordinated usually suffer that the resident obstructs; Often make the place that these customer volumes are many, the construction of cdma wireless network can't be carried out.
Existing category-5 cable compartment system obtains applications well on the market in reality.But its weak spot also shows especially.Transmitting power as supporting is little, and category-5 cable compartment system peak power output in the market can only reach 15dBm, and area coverage is very little, and satisfy can not waterproof and dustproof etc. requirement, use in the time of therefore can only covering as indoor benefit point.
For this reason, the utility model provides a kind of effective and feasible scheme that solves easily problems such as covering a little less than the outdoor cdma network such as sub-district and villages within the city.
Summary of the invention
The problem that the utility model will solve is: provide a kind of CDMA category-5 cable high-power compartment system; The high-power compartment system of this CDMA category-5 cable have that the category-5 cable of utilization resource is carried out signal transmission, stable performance,, environmental protection and energy saving little to web influence, transmitting power is big, area coverage is big, coverage effect is good, price is relatively cheap and can waterproof and dustproof etc. advantage, can be good at that signal is carried out in CDMA outdoor signal blind area and cover.And utilize its category-5 cable wiring characteristic of simple to combine application with embellished antenna problem such as to cover a little less than fine solution sub-district, the villages within the city.
For reaching the foregoing invention purpose, the technical scheme that the utility model adopted is: be made up of access unit and high-power capping unit; Be coupled mode or wireless receiving mode of said access unit one end and base station introduced information source; The other end links to each other with high-power capping unit through category-5 cable, and the high-power capping unit other end is provided with the descending 800MHz radiofrequency signal that is used for carrying out after the high-power amplification and resends the 800MHz retransmitting antenna to communication blind district.
Above-mentioned access unit comprises dielectric duplexer, the low noise cancellation circuit of downlink radio frequency, descending lower frequency changer circuit, the low noise cancellation circuit of up intermediate frequency, up up-converter circuit, local oscillation circuit, LC filter circuit, Ba Lun transformer circuit totally eight parts composition; Said Ba Lun transformer circuit, LC filter circuit, the low noise cancellation circuit of up intermediate frequency, up up-converter circuit and dielectric duplexer are connected to form up link, and dielectric duplexer, descending low noise cancellation circuit, descending lower frequency changer circuit, LC filter circuit and Ba Lun transformer circuit are connected to form down link; Local oscillation circuit provides local oscillation signal for respectively up up-converter circuit and descending lower frequency changer circuit.Local oscillation signal and up intermediate-freuqncy signal convert up 800MHz radiofrequency signal into through up up-converter circuit, send back the base station through dielectric duplexer.Local oscillation signal and descending 800MHz radiofrequency signal convert descending intermediate-freuqncy signal into through descending lower frequency changer circuit, behind LC filter circuit and Ba Lun transformer, are sent to high-power capping unit through category-5 cable.
Above-mentioned high-power capping unit comprises RU frequency-variable module, dielectric duplexer module, up 800MHz low noise circuit, descending 800MHz power amplifier circuit, 800MHz cavity duplexer and 800MHz retransmitting antenna totally six parts composition; Said RU frequency-variable module one end is connected with access unit through category-5 cable, and the other end is connected with the dielectric duplexer module; The descending 800MHz power amplifier circuit of said high-power capping unit is connected with the dielectric duplexer module with up 800MHz low noise amplifier circuit one end, the other end and 800MHz cavity duplexer; Said RU frequency-variable module, dielectric duplexer module, descending 800MHz power amplifier circuit, 800MHz cavity duplexer and 800MHz retransmitting antenna connect and compose down link in order; 800MHz retransmitting antenna, 800MHz cavity duplexer, up 800MHz low noise circuit, dielectric duplexer module, RU frequency-variable module connect and compose up link in order.
Said high-power capping unit RU frequency-variable module by the low noise cancellation circuit of dielectric duplexer, descending intermediate frequency, descending up-converter circuit, the low noise cancellation circuit of up radio frequency, up lower frequency changer circuit, local oscillation circuit, LC filter circuit, Ba Lun transformer circuit totally eight parts form; Said dielectric duplexer, the low noise cancellation circuit of up radio frequency, up lower frequency changer circuit, Ba Lun transformer circuit, LC filter circuit are connected to form up link, and LC filter circuit, Ba Lun transformer circuit, the low noise cancellation circuit of descending intermediate frequency and descending up-converter circuit, dielectric duplexer are connected to form down link; Local oscillation circuit provides local oscillation signal for respectively up lower frequency changer circuit and descending up-converter circuit.Local oscillation signal and up 800MHz radiofrequency signal convert up intermediate-freuqncy signal into through up lower frequency changer circuit, are sent to through category-5 cable through back behind LC filter circuit and the Ba Lun transformer and pass to access unit.Local oscillation signal and descending intermediate-freuqncy signal convert descending 800MHz radiofrequency signal into through descending up-converter circuit, output to next stage through behind the dielectric duplexer.
In sum; The high-power compartment system of CDMA category-5 cable that the utility model provided have that the category-5 cable of utilization resource is carried out signal transmission, stable performance,, environmental protection and energy saving little to web influence, transmitting power is big, area coverage is big, coverage effect is good, price is relatively cheap and can waterproof and dustproof etc. advantage, can be good at that signal is carried out in CDMA outdoor signal blind area and cover.And utilize its category-5 cable wiring characteristic of simple to combine application with embellished antenna problem such as to cover a little less than fine solution sub-district, the villages within the city.
Description of drawings
Fig. 1 is the high-power compartment system access unit of CDMA category-5 cable principle framework figure.
Fig. 2 is the high-power capping unit principle framework of the high-power compartment system of CDMA category-5 cable figure.
Fig. 3 is the high-power compartment system RU of CDMA category-5 cable converter unit principle framework figure.
Embodiment
The high-power compartment system of CDMA category-5 cable that this patent provided carries out the 800MHz radiofrequency signal frequency-conversion processing at access unit and after intermediate-freuqncy signal, is sent to high-power capping unit through the category-5 cable resource, the blind area is covered through retransmitting antenna from being converted to intermediate-freuqncy signal the 800MHz frequency range again at high-power capping unit end.
The high-power compartment system of this CDMA category-5 cable is made up of access unit, high-power capping unit; Wherein, the operation principle of each unit is following:
Access unit is after the descending 800MHz radiofrequency signal of base station (perhaps base station zoom out system) coupling; After access unit downlink radio frequency low-noise amplification circuit is amplified; Be converted to descending intermediate-freuqncy signal by the descending lower frequency changer circuit of access unit, be sent to high-power capping unit through category-5 cable after descending intermediate-freuqncy signal process LC filter filtering and the conversion of Ba Lun transformer circuit.After access unit receives the up intermediate-freuqncy signal that sends from high-power capping unit; Earlier through after LC filter filtering and the conversion of Ba Lun transformer circuit; Amplify by the up intermediate frequency low-noise amplification circuit of access unit again; Up intermediate-freuqncy signal after low noise is amplified enters into the up up-converter circuit of access unit and is converted to up 800MHz radiofrequency signal, after dielectric duplexer turns back to base-station interface.
After high-power capping unit receives the descending intermediate-freuqncy signal that transmits from access unit; Conversion of Ba Lun transformer circuit and LC filter filtering by the RU frequency-variable module; Carrying out low noise by the low noise cancellation circuit of descending intermediate frequency again amplifies; Be that descending 800MHz radiofrequency signal is carried out filtering once more after output to the dielectric duplexer module behind the dielectric duplexer by descending up-converter circuit frequency conversion then; Carry out high Linear Great Power by descending 800MHz power amplification circuit more afterwards and amplify, the descending 800MHz radiofrequency signal after the amplification is transmitted into the area of coverage through the 800MHz retransmitting antenna behind 800MHz cavity duplexer.Receive the up 800MHz radiofrequency signal of coming from high-power cell footprint through the 800MHz retransmitting antenna; After the isolation of 800MHz cavity duplexer; Carrying out low noise by the up low noise circuit of 800MHz amplifies; After the dielectric duplexer module is isolated once more, enter into the RU frequency-variable module then and carry out the up-downgoing separation by dielectric duplexer; Up lower frequency changer circuit is converted to up intermediate-freuqncy signal, at last through being sent to access unit through category-5 cable after LC filter filtering and the conversion of Ba Lun transformer circuit.
The descending 800MHz power amplifier of above-mentioned TU Trunk Unit has adopted ultra-linear amplifier analog predistortion technology, has effectively reduced power consumption, has improved the efficient of power amplifier, makes whole system efficient energy-saving more.
Describe in detail below in conjunction with the embodiment of accompanying drawing the utility model:
It is as depicted in figs. 1 and 2,
Down link is: access unit is after the descending 800MHz radiofrequency signal of base station (perhaps base station zoom out system) coupling; After access unit downlink radio frequency low-noise amplification circuit is amplified; Be converted to descending intermediate-freuqncy signal by the descending lower frequency changer circuit of access unit, be sent to high-power capping unit through category-5 cable after descending intermediate-freuqncy signal process LC filter filtering and the conversion of Ba Lun transformer circuit.After high-power capping unit receives the descending intermediate-freuqncy signal that transmits from access unit; Conversion of Ba Lun transformer circuit and LC filter filtering by the RU frequency-variable module; Carrying out low noise by the low noise cancellation circuit of descending intermediate frequency again amplifies; Be that descending 800MHz radiofrequency signal is carried out filtering once more after output to the dielectric duplexer module behind the dielectric duplexer by descending up-converter circuit frequency conversion then; Carry out high Linear Great Power by descending 800MHz power amplification circuit more afterwards and amplify, the descending 800MHz radiofrequency signal after the amplification is transmitted into the area of coverage through the 800MHz retransmitting antenna behind 800MHz cavity duplexer.
Up link is: receive the up 800MHz radiofrequency signal of coming from the high-power capping unit area of coverage through the 800MHz retransmitting antenna; After the 800MHz cavity duplexer isolation through high-power capping unit; Carrying out low noise by the up low noise circuit of 800MHz amplifies; The RU frequency-variable module that after the dielectric duplexer module is isolated once more, enters into high-power capping unit then carries out up-downgoing by dielectric duplexer to be separated; Up lower frequency changer circuit is converted to up intermediate-freuqncy signal, at last through being sent to access unit through category-5 cable after LC filter filtering and the conversion of Ba Lun transformer circuit.After access unit receives the up intermediate-freuqncy signal that sends from high-power capping unit; Earlier through after LC filter filtering and the conversion of Ba Lun transformer circuit; Amplify by the up intermediate frequency low-noise amplification circuit of access unit again; Up intermediate-freuqncy signal after low noise is amplified enters into the up up-converter circuit of access unit and is converted to up 800MHz radiofrequency signal, after dielectric duplexer turns back to base-station interface.
As shown in Figure 3, high-power capping unit RU frequency-variable module comprises dielectric duplexer, the low noise cancellation circuit of descending intermediate frequency, descending up-converter circuit, the low noise cancellation circuit of up radio frequency, up lower frequency changer circuit, local oscillation circuit, LC filter circuit, Ba Lun transformer circuit totally eight partial circuits; The RU frequency-variable module receives after the descending intermediate-freuqncy signal that sends from access unit earlier behind conversion of Ba Lun transformer circuit and LC filter filtering; Carrying out low noise by the low noise cancellation circuit of descending intermediate frequency again and amplify, is that descending 800MHz radiofrequency signal is after output to the dielectric duplexer module behind the dielectric duplexer by descending up-converter circuit frequency conversion then.The RU frequency-variable module receives by elder generation after the up 800MHz radiofrequency signal through dielectric duplexer filtering; Be converted to up intermediate-freuqncy signal by up lower frequency changer circuit then, at last through being sent to access unit through category-5 cable after LC filter filtering and the conversion of Ba Lun transformer circuit.Local oscillation circuit provides local oscillation signal for respectively up lower frequency changer circuit and descending up-converter circuit.Local oscillation signal and up 800MHz radiofrequency signal convert up intermediate-freuqncy signal into through up lower frequency changer circuit, pass to access unit through being sent to through category-5 cable after LC filter circuit filtering and the conversion of Ba Lun transformer circuit.Local oscillation signal and descending intermediate-freuqncy signal convert descending 800MHz radiofrequency signal into through descending up-converter circuit, output to next stage through behind the dielectric duplexer.
Foregoing; Be merely the preferred embodiment of this patent; It is not the embodiment that is used to limit this patent; Those of ordinary skills can carry out corresponding flexible and adjustment, so the protection range of this patent should be as the criterion with the desired protection range of claims very easily according to the main design and the spirit of this patent.Some improvement that those skilled in the art of the present technique carry out the utility model under the prerequisite that does not break away from the utility model principle and modification also fall in the protection range of the utility model claim.
Claims (4)
1. the high-power compartment system of CDMA category-5 cable is characterized in that: be made up of access unit and high-power capping unit; Information source is introduced with mode of being coupled or wireless receiving mode in said access unit one end and base station; The other end links to each other with high-power capping unit through category-5 cable, and the high-power capping unit other end is provided with the descending 800MHz radiofrequency signal that is used for carrying out after the high-power amplification and resends the 800MHz retransmitting antenna to communication blind district.
2. the high-power compartment system of CDMA category-5 cable according to claim 1 is characterized in that: said access unit comprises dielectric duplexer, the low noise cancellation circuit of downlink radio frequency, descending lower frequency changer circuit, the low noise cancellation circuit of up intermediate frequency, up up-converter circuit, local oscillation circuit, LC filter circuit, Ba Lun transformer circuit totally eight parts composition; Said Ba Lun transformer circuit, LC filter circuit, the low noise cancellation circuit of up intermediate frequency, up up-converter circuit and dielectric duplexer are connected to form up link, and dielectric duplexer, descending low noise cancellation circuit, descending lower frequency changer circuit, LC filter circuit and Ba Lun transformer circuit are connected to form down link; Local oscillation circuit provides local oscillation signal for respectively up up-converter circuit and descending lower frequency changer circuit; Local oscillation signal and up intermediate-freuqncy signal convert up 800MHz radiofrequency signal into through up up-converter circuit, send back the base station through dielectric duplexer; Local oscillation signal and descending 800MHz radiofrequency signal convert descending intermediate-freuqncy signal into through descending lower frequency changer circuit, behind LC filter circuit and Ba Lun transformer, are sent to high-power capping unit through category-5 cable.
3. the high-power compartment system of CDMA category-5 cable according to claim 1 is characterized in that: said high-power capping unit comprises RU frequency-variable module, dielectric duplexer module, up 800MHz low noise circuit, descending 800MHz power amplifier circuit, 800MHz cavity duplexer and 800MHz retransmitting antenna totally six parts composition; Said RU frequency-variable module one end is connected with access unit through category-5 cable, and the other end is connected with the dielectric duplexer module; The descending 800MHz power amplifier circuit of said high-power capping unit is connected with the dielectric duplexer module with up 800MHz low noise amplifier circuit one end, the other end and 800MHz cavity duplexer; Said RU frequency-variable module, dielectric duplexer module, descending 800MHz power amplifier circuit, 800MHz cavity duplexer and 800MHz retransmitting antenna connect and compose down link in order; 800MHz retransmitting antenna, 800MHz cavity duplexer, up 800MHz low noise circuit, dielectric duplexer module, RU frequency-variable module connect and compose up link in order.
4. the high-power compartment system of CDMA category-5 cable according to claim 3 is characterized in that: said high-power capping unit RU frequency-variable module by the low noise cancellation circuit of dielectric duplexer, descending intermediate frequency, descending up-converter circuit, the low noise cancellation circuit of up radio frequency, up lower frequency changer circuit, local oscillation circuit, LC filter circuit, Ba Lun transformer circuit totally eight parts form; Said dielectric duplexer, up lower frequency changer circuit, LC filter circuit, Ba Lun transformer circuit are connected to form up link, and Ba Lun transformer circuit, LC filter circuit, the low noise cancellation circuit of descending intermediate frequency and descending up-converter circuit and dielectric duplexer are connected to form down link; Local oscillation circuit provides local oscillation signal for respectively up lower frequency changer circuit and descending up-converter circuit;
Local oscillation signal and up 800MHz radiofrequency signal convert up intermediate-freuqncy signal into through up lower frequency changer circuit, are sent to through category-5 cable through back behind LC filter circuit and the Ba Lun transformer and pass to access unit;
Local oscillation signal and descending intermediate-freuqncy signal convert descending 800MHz radiofrequency signal into through descending up-converter circuit, output to next stage through behind the dielectric duplexer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205257697U CN202385288U (en) | 2011-12-15 | 2011-12-15 | Code division multiple access (CDMA) fifth-class wire high-power distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205257697U CN202385288U (en) | 2011-12-15 | 2011-12-15 | Code division multiple access (CDMA) fifth-class wire high-power distribution system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202385288U true CN202385288U (en) | 2012-08-15 |
Family
ID=46633756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205257697U Expired - Lifetime CN202385288U (en) | 2011-12-15 | 2011-12-15 | Code division multiple access (CDMA) fifth-class wire high-power distribution system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202385288U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301367A (en) * | 2014-03-14 | 2015-01-21 | 同济大学 | Communication method between remote unit and power amplifier of digital multipoint distribution system |
-
2011
- 2011-12-15 CN CN2011205257697U patent/CN202385288U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301367A (en) * | 2014-03-14 | 2015-01-21 | 同济大学 | Communication method between remote unit and power amplifier of digital multipoint distribution system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202998095U (en) | Digital multi-transmission-mode repeater system | |
| US8121540B1 (en) | Repeater system and method for providing wireless communications | |
| CN202385288U (en) | Code division multiple access (CDMA) fifth-class wire high-power distribution system | |
| CN201509322U (en) | Intermediate frequency remote distribution system based on radio frequency integrated circuit | |
| CN203219304U (en) | Energy-efficient multicarrier digital fiber microwave remote extension system | |
| CN201048382Y (en) | Multi-frequency band optical fiber repeater | |
| CN202513938U (en) | Broadband device for transmitting multisystem radio-frequency signal based on wired coaxial cable network | |
| CN202261291U (en) | Double-frequency band digital wireless repeater and the system thereof | |
| CN202231868U (en) | Multi-system digital enclave compressing and dispreading system | |
| CN210274084U (en) | 5G signal relay amplifier with CPE function | |
| CN203675107U (en) | Mobile communication signal enhancement LED lamp | |
| CN202121587U (en) | Companding remote stretch system for energy-saving multicarrier digital optical fiber | |
| CN207691805U (en) | One kind is exempted to connect up intelligent micropower direct amplification machine | |
| CN206932220U (en) | A kind of signal enhancing device and signal transmission system | |
| CN101388721A (en) | System and method for implementing indoor covering in TD-SCDMA network | |
| CN201639583U (en) | Frequency-selecting repeater | |
| CN200980076Y (en) | A TD-SCDMA mobile communication wireless repeater | |
| CN204305357U (en) | A kind of LTE based on catv network registers one's residence the hardware structure of covering system | |
| CN103297987B (en) | Based on the mobile communication indoor differential distribution system of power line transmission | |
| CN203813786U (en) | Receiving and transmitting multiplexing circuit for TDD system wireless Pico repeater | |
| CN203466973U (en) | Power line transmission-based mobile communication indoor micro distribution system | |
| CN103973356A (en) | Receiving and transmitting multiplex circuit for TDD system wireless Pico repeater | |
| CN201966916U (en) | Frequency-shift repeater station system adopting time division duplex transmission manner | |
| CN104380619A (en) | Remote wireless base station device having in-house expandability and in-building relay system | |
| CN201957021U (en) | Trunk amplifier transmission network device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA YOUKE COMMUNICATION TECHNOLOGY CO., LTD. Free format text: FORMER NAME: FUJIAN YOUKE COMMUNICATION TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 350005 Cangshan science and Technology Park, Fujian District, Fuzhou, No. 6, No. 1 Patentee after: China Youke Communication Technology Co., Ltd. Address before: 350005 Cangshan science and Technology Park, Fujian District, Fuzhou, No. 6, No. 1 Patentee before: Fujian Youke Communication Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120815 |