CN103095356B - A kind of beam-forming method, base station and traffic transport device - Google Patents
A kind of beam-forming method, base station and traffic transport device Download PDFInfo
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- CN103095356B CN103095356B CN201110346614.1A CN201110346614A CN103095356B CN 103095356 B CN103095356 B CN 103095356B CN 201110346614 A CN201110346614 A CN 201110346614A CN 103095356 B CN103095356 B CN 103095356B
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Abstract
Embodiments provide a kind of method of beam forming, base station and traffic transport device.Wherein, the method comprises: base station receives the positional information of the described transit equipment sent after transit equipment enters the community of described base station coverage; Described base station receives the velocity information of the described transit equipment sent after transit equipment enters the community of described base station coverage; Described base station is according to the positional information of the described transit equipment received and velocity information, and the Delay combining correspondence determines that described base station will send the parameter of wave beam, and adjustment sends the direction of wave beam; Described base station, according to the beam direction of described adjustment, sends described wave beam to described traffic transport device.The method that the application embodiment of the present invention provides, base station can send wave beam accurately to traffic transport device, improves the launch accuracy of wave beam, improves communication quality.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of manufacturing process of wave beam, base station and traffic transport device.
Background technology
Along with the development of modern communication technology, people have more and more higher requirement to the downlink transmission rate of wireless communication system and reliability, therefore multiaerial system is introduced, have more (multiple input andmultiple output as entered more, MIMO) type multiaerial system, not only adopt multiple receive antenna, also available multiple transmit antennas.Organize antenna owing to have employed, from transmitting terminal to receiving terminal wireless signal, corresponding same spatial flow (spatialstream), is transmitted by mulitpath more.At receiving terminal, adopt certain algorithm to receive signal to multiple antenna and process, just obviously can improve the signal to noise ratio of receiving terminal.Even if when receiving terminal is far away, also good signal quality can be obtained.Therefore multiaerial system improves the capacity of system to a certain extent.
In order to further improve the capacity of system, also been proposed a kind of method utilizing this multi-antenna technology---beam forming technique.This beam forming technique can form a narrower directional beam sensing user terminal, and make in this beam coverage, the equivalent received channel situation of user terminal improves, thus reaches the object increasing power system capacity.
But existing beam forming technique is normally in the reponse system of a closed loop, and base station passes through fully to know that the wave beam corresponding to channel status generation of user terminal realizes above object.If in dynamic system, as under high-speed motion environment, the high speed of transit equipment makes this channel status always lag behind virtual condition between base station and transit equipment, and therefore traditional beam forming technique cannot ensure that wave beam accurately aims at the mark direction.
Summary of the invention
Problem in dynamical system cannot be applied to preferably for solving existing beam forming technique, embodiments provide a kind of method of beam forming, base station and traffic transport device.
Embodiments provide a kind of method of beam forming, comprising:
Base station receives the positional information of the described transit equipment sent after transit equipment enters the community of described base station coverage; Described base station receives the velocity information of the described transit equipment sent after described transit equipment enters the community of described base station coverage;
Described base station according to the positional information of the described transit equipment received and velocity information, and combines the parameter that corresponding Delay determines the wave beam that described base station will send, and adjustment sends the direction of wave beam;
Described base station sends described wave beam according to the described beam direction determined to described transit equipment.
The embodiment of the present invention additionally provides a kind of base station, comprising:
Receiving element, the positional information of the described transit equipment sent enter the community of base station coverage for receiving transit equipment after; Receive the velocity information of the described transit equipment sent after described transit equipment enters the community of described base station coverage;
Processing unit, for combining corresponding Delay, and the positional information of described transit equipment that receives of described receiving element and velocity information, determine the parameter of the wave beam that described base station will send, the direction of adjustment transmission wave beam
Transmitting element, sends described wave beam according to the described beam direction determined to described transit equipment.
The embodiment of the present invention additionally provides a kind of traffic transport device, it is characterized in that, comprises a communication terminal, and wherein, described communication terminal comprises:
Transmitting element, for when described traffic transport device enters the community of base station coverage, sends the positional information of described transit equipment, sends the velocity information of described transit equipment to described base station to described base station;
Receiving element, for receiving the wave beam that described base station sends, the beam direction that wherein said base station sends be described base station according to described in positional information, the velocity information of described transit equipment that receive, and the Delay combining correspondence is determined.
Adopt the beam-forming method that the embodiment of the present invention provides, base station and traffic transport device, can realize the traffic transport device to high-speed mobile, carry out beam forming, ensures that wave beam can aim at the mark, improve the precision of multi-beam transmission, improve communication quality.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of mimo system in the embodiment of the present invention;
Fig. 2 is the flow chart of beam-forming method in the embodiment of the present invention;
Fig. 3 is the schematic diagram that in the embodiment of the present invention, beam direction is determined in base station;
Fig. 4 is the structure chart of base station in the embodiment of the present invention;
Fig. 5 is the structure chart of traffic transport device in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, beam forming technique provided by the present invention and base station are described in detail.
Accompanying drawing 1 is the fundamental diagram of mimo system, wherein:
Wherein S is input modulated symbol,
for beam forming transmission end weighing vector, it is loaded into N
ton individual transmitting antenna, through mimo channel, by N
rthe reception antenna of individual array element receives, and via one group of merging weighing vector Z corresponding with W
*merge.Receiving terminal can by the channel state feedback of self to transmitting terminal while carrying out to received signal processing, and transmitting terminal can utilize this information to adjust weighing vector W.
As mentioned above, transmission beam forming is usually supposed to make a start and is had certain channel condition information, and in some conditions, transmitting terminal can estimate the descending characteristic of channel by the reciprocity of link.When channel does not have reciprocity, above-mentioned feedback information (namely receiving terminal is quantized channel information and fed back to the information of transmit port by narrowband feedback channel) just can be utilized to adjust the weighing vector of beam forming.
See accompanying drawing 2, embodiments provide a kind of method of beam forming, comprising:
201, base station receives the positional information of the described transit equipment sent after transit equipment enters the community of described base station coverage; Described base station receives the velocity information of the described transit equipment sent after transit equipment enters the community of described base station coverage;
203, described base station is according to the positional information of the described transit equipment received and velocity information, and combines the parameter that corresponding Delay determines the wave beam that described base station will send, and adjustment sends the direction of wave beam;
205, described base station sends described wave beam according to the direction of the described wave beam determined to described transit equipment.
In another one embodiment of the present invention, described base station also combines according to the positional information of the described transit equipment received and velocity information the parameter that corresponding Delay determines the wave beam that described base station will send, and adjustment sends the direction of wave beam, comprising:
Described base station is according to the positional information of the described transit equipment received and velocity information, determine Delay, calculate and determine emission angle parameter, adjust the beam direction that described base station will send, wherein said Delay refers to that described transit equipment is from the time difference sent the positional information moment to described base station transmission wave beam moment.
In another one embodiment of the present invention, described base station receives the positional information of the described transit equipment sent after transit equipment enters the community of described base station coverage, comprising:
After described transit equipment enters into the community of described base station coverage, send the positional information of a transit equipment to described base station every a systemic presupposition time interval d1;
Described base station receives the positional information that described transit equipment sends.
In another one embodiment of the present invention, described base station receives the speed of the described transit equipment sent after transit equipment enters the community of described base station coverage, comprising:
After described transit equipment enters the community of described base station coverage, send the speed of a transit equipment every a systemic presupposition time interval d2;
Described base station receives the velocity information that described transit equipment sends.
In another one embodiment of the present invention, described base station is according to positional information, the speed of the described transit equipment received, and Delay, determines the direction of the wave beam that described base station will send, comprising:
Wherein, base station and transit equipment geographical location information determination transit equipment are θ relative to azimuth, base station
gPS, t
1+ t
2+ Δ t is described transit equipment sends wave beam time difference from transmission positional information to described base station, and d is the vertical height of base station relative to transit equipment,
for the beam forming direction that base station is determined.
In another one embodiment of the present invention, described positional information is transit equipment current location information.
Adopt the method that the embodiment of the present invention provides, base station according to the position of the transit equipment of high-speed cruising and speed, can calculate corresponding Delay, the direction that accurate compute beam is shaped, and sends to transit equipment, ensure that the precision of multi-beam transmission.
The beam-forming method that the embodiment of the present invention provides, premised on multiaerial system, the method comprises:
S1), after transit equipment enters the community of base station coverage, to the real-time position information of base station repeats transit equipment;
In embodiments of the present invention, be tell that the transit equipment of advancing is described for example.Wherein, transit equipment is also carry out communicating with base station by its communication terminal arranged, and therefore to a certain extent, transit equipment can regard the user terminal of a high-speed mobile as.Under the environment that other are similar, as bus, coach, or subway, the transit equipments such as light rail, if there are also installed similar communication terminal above it, also can adopt the method that this inventive embodiments provides.
Wherein, in embodiments of the present invention, transit equipment, to the real-time position information of base station repeats transit equipment, specifically can comprise:
After transit equipment enters the community of base station coverage, can, with the interval of the single-candidate of a systemic presupposition to base station reporting position information, e.g., just report once to base station at interval of 1 second (s), also can report once to base station at interval of 10 milliseconds; Also can to base station reporting position information in the interval of not single-candidate, as according to arranging the random real-time position information reporting transit equipment to base station.
Wherein, the positional information that transit equipment reports can be the geographical location information of GPS location, as longitude and latitude information, concrete as east longitude 120 °, north latitude 48 ° etc.
Preferably, transit equipment upon entering a cell, every time interval of a systemic presupposition to base station repeats positional information best results.
S2), after transit equipment enters the community of base station coverage, to the speed of service of base station repeats transit equipment;
In embodiments of the present invention, transit equipment reports the speed of service of transit equipment to base station, can be specifically:
The speed of service of himself, when reporting position information, reports by transit equipment together; Or the speed that transit equipment reports it to run every fixed time interval to base station, as 10ms or 30ms etc.; Or transit equipment is when speed changes, report the speed etc. after its change to base station.
Wherein, in step S1, in S2, after transit equipment enters the overlay area of this base station, this base station can send broadcast to the communicator on this transit equipment, the communicator of this transit equipment, according to the broadcast received, determines that transit equipment enters a new community, enters a new community as known according to the tracking area in broadcast.
In addition, in step S1 and/or S2, base station has found that this transit equipment enters the overlay area of oneself, can report himself positional information and/or velocity information by initiative transit equipment; Certainly, in other situations, after transit equipment finds to enter the overlay area of a new base station, self positional information and/or velocity information can also initiatively be reported to base station.
S3), base station receive transit equipment send real-time position information after, determine the initial position of transit equipment in this base station coverage area;
Wherein, after the geographical location information of himself is sent to base station by transit equipment, base station is according to the geographical location information of transit equipment, and the geographical location information residing for self, horizontal range and the vertical range of transit equipment distance base station can be calculated, and then get the initial position of transit equipment in this base station coverage community.As according to the transit equipment distance horizontal range of base station and vertical range, transit equipment can be calculated relative to base station azimuth angle theta
gPS.
S4), base station is according to the speed of service of the initial position message of transit equipment in community, transit equipment and corresponding Delay determination beam direction.
In embodiments of the present invention, transit equipment is to before the positional information of transmission geographical position, base station, elder generation and base station is needed to set up communication channel, and just can send to base station after needing geographical location information to encode, after base station receives this information, the positional information of transit equipment just can be got through decoding, the initial position of this transit equipment in base station coverage area is determined according to the geographical location information of transit equipment in base station simultaneously, therefore transit equipment receives from the geographical location information sending self to base station, there is certain time delay centre, uplink time delay can be defined as: be t
1, in addition, the direction of wave beam is determined according to the positional information of transit equipment, speed per hour in base station, also has certain time delay, as phase array adjusts the time delay of each array element weight coefficient, is defined as Δ t, base station is determined the direction of wave beam and is also had certain time delay to transit equipment transmission wave beam, is defined as descending time delay t
2.Now ignore the time that wave beam transmits in wireless environments.
Therefore, the wave beam preparing to send to the geographical location information of base station transmission self to base station from transit equipment is aimed at transit equipment, there is t
1+ t
2the time difference of+Δ t.
As shown in Figure 3, by base station and transit equipment geographical location information determination transit equipment relative to base station azimuth angle theta
gPS, can determine that the azimuth after correcting is by real-time speed and cell structure
final wave beam aligning direction is
Its concrete account form is:
Wherein,
be the orientation angle of the wave beam needs aligning that base station calculates.
S5), base station sends wave beam according to determined wave beam aligning direction to this transit equipment.
In the above-described embodiments, under the environment of high-speed railway, the manufacturing process of wave beam does not rely on the channel information fed back with receiving terminal, but by adopting the method for location, position, in conjunction with the transit equipment speed of service, and consider corresponding time delay, and then adaptive adjustment beam direction, reach reduction error, improve the object of beam position accuracy.
See accompanying drawing 4, embodiments provide a kind of base station, comprising:
Receiving element 402, the positional information of the described transit equipment sent enter the community of base station coverage for receiving transit equipment after; Receive the speed of the described transit equipment sent after described transit equipment enters the community of described base station coverage;
Processing unit 404, for combining corresponding Delay, and positional information, the velocity information of described transit equipment that described receiving element 402 receives, determine the direction of the wave beam that described base station will send,
Transmitting element 406, sends described wave beam according to the described beam direction determined to described transit equipment.
In another one embodiment of the present invention, the positional information of the described transit equipment that described processing unit 404 receives specifically for basis and velocity information, determine Delay, calculate and determine emission angle parameter, adjust the beam direction that described base station will send, wherein said Delay refers to that described transit equipment is from the time difference sent the positional information moment to described base station transmission wave beam moment.
The base station that the embodiment of the present invention provides, can according to the positional information of transit equipment, and velocity information and corresponding Delay calculate, and need the direction of the wave beam sent to this transit equipment, and send wave beam according to this direction to this transit equipment.
With reference to accompanying drawing 5, another one embodiment of the present invention provides a kind of traffic transport device, wherein this traffic transport device is provided with a communication terminal, and wherein, described communication terminal comprises:
Transmitting element 501, for when described traffic transport device enters the community of base station coverage, sends the positional information of described transit equipment, sends the velocity information of described transit equipment to described base station to described base station;
Receiving element 502, for receiving the wave beam that described base station sends, the wave beam that wherein said base station sends be described base station according to described in positional information, the velocity information of described transit equipment that receive, and the Delay combining correspondence is determined.
In another one embodiment of the present invention,
Described transmitting element 501, specifically for enter described base station coverage at described transit equipment community after, every a systemic presupposition time interval d
1the positional information of described transit equipment is sent to described base station.
In another one embodiment of the present invention,
Described transmitting element 501, specifically for enter described base station coverage at described transit equipment community after, every a systemic presupposition time interval d
2the velocity information of described transit equipment is sent to described base station.
In another one embodiment of the present invention, described transit equipment comprises motor-car, train, inter-city train, high ferro, coach, bus, steamer, subway or light rail etc.This transit equipment needs frequently and information interaction is carried out in base station.
The traffic transport device that the embodiment of the present invention provides, can be supplied to base station by the positional information of self and velocity information in time, and the beam angle that sends to this transit equipment just can be determined according to these information in such base station, improves the transmission precision of wave beam.
It is more than the embodiment of the present invention one preferably execution mode, anyone is under the prerequisite of skilled, do not deviate from spirit of the present invention and do not exceed the technical scope that the present invention relates to prerequisite under, can to the present invention describe details do various supplement and amendment.Protection scope of the present invention is not limited to the scope cited by embodiment, and protection scope of the present invention is as the criterion with claim.
Claims (11)
1. a method for beam forming, is characterized in that, comprising:
Base station receives the positional information of the described transit equipment sent after transit equipment enters the community of described base station coverage; Described base station receives the velocity information of the described transit equipment sent after described transit equipment enters the community of described base station coverage;
Described base station according to the positional information of the described transit equipment received and velocity information, and combines the parameter that corresponding Delay determines the wave beam that described base station will send, and adjustment sends the direction of wave beam; Wherein said Delay refers to that described transit equipment to send time difference the wave beam moment from sending the positional information moment to described base station, comprises the time difference that described transit equipment sends time difference that positional information receives to base station, base station is determined to described transit equipment transmission wave beam after beam direction according to the time difference of the positional information of described transit equipment and velocity information determination beam direction and base station;
Described base station sends described wave beam according to the described beam direction determined to described transit equipment.
2. beam-forming method according to claim 1, is characterized in that, described base station receives the positional information of the described transit equipment sent after traffic transport device enters the community of described base station coverage, comprising:
After described transit equipment enters into the community of described base station coverage, send the positional information of a transit equipment to described base station every a systemic presupposition time interval d1;
Described base station receives the positional information that described transit equipment sends.
3. beam-forming method according to claim 1, is characterized in that, described base station receives the velocity information of the described transit equipment sent after transit equipment enters the community of described base station coverage, comprising:
After described transit equipment enters the community of described base station coverage, send the velocity information of a transit equipment to described base station every a systemic presupposition time interval d2;
Described base station receives the velocity information that described transit equipment sends.
4. beam-forming method according to claim 1, it is characterized in that, described base station according to the positional information of the described transit equipment received and velocity information, and combines the parameter that corresponding Delay determines the wave beam that described base station will send, adjustment sends the direction of wave beam, comprising:
Delay, according to the positional information of the described transit equipment received and velocity information, is determined in described base station, calculates and determines emission angle parameter, adjusting the beam direction that described base station will send.
5., according to the arbitrary described beam-forming method of Claims 1-4, it is characterized in that, described positional information is the transit equipment current location information obtained by location positioning system.
6. a base station, is characterized in that, comprising:
Receiving element, the positional information of the described transit equipment sent enter the community of base station coverage for receiving transit equipment after; Receive the velocity information of the described transit equipment sent after described transit equipment enters the community of described base station coverage;
Processing unit, for combining corresponding Delay, and the positional information of described transit equipment that receives of described receiving element and velocity information, determine the parameter of the wave beam that described base station will send, the direction of adjustment transmission wave beam; Wherein said Delay refers to that described transit equipment to send time difference the wave beam moment from sending the positional information moment to described base station, comprises the time difference that described transit equipment sends time difference that positional information receives to base station, base station is determined to described transit equipment transmission wave beam after beam direction according to the time difference of the positional information of described transit equipment and velocity information determination beam direction and base station;
Transmitting element, sends described wave beam according to the described beam direction determined to described transit equipment.
7. base station as claimed in claim 6, is characterized in that,
The positional information of the described transit equipment that described processing unit receives specifically for basis and velocity information, determine Delay, calculate and determine emission angle parameter, adjusting the beam direction that described base station will send.
8. a traffic transport device, is characterized in that, comprises a communication terminal, and wherein, described communication terminal comprises:
Transmitting element, for when described traffic transport device enters the community of base station coverage, sends the positional information of described transit equipment, sends the velocity information of described transit equipment to described base station to described base station;
Receiving element, for receiving the wave beam that described base station sends, the beam direction that wherein said base station sends be described base station according to described in positional information, the velocity information of described transit equipment that receive, and the associated time delays information combining correspondence is determined; Wherein said Delay refers to that described transit equipment to send time difference the wave beam moment from sending the positional information moment to described base station, comprises the time difference that described transit equipment sends time difference that positional information receives to base station, base station is determined to described transit equipment transmission wave beam after beam direction according to the time difference of the positional information of described transit equipment and velocity information determination beam direction and base station; .
9. traffic transport device according to claim 8, is characterized in that,
Described transmitting element, specifically for enter described base station coverage in described traffic transport device community after, send the positional information of described transit equipment to described base station every a systemic presupposition time interval d1.
10. traffic transport device according to claim 8, is characterized in that,
Described transmitting element, specifically for enter described base station coverage in described traffic transport device community after, send the velocity information of described transit equipment to described base station every a systemic presupposition time interval d2.
Traffic transport device described in 11. according to Claim 8 to 10 are arbitrary, it is characterized in that, described transit equipment comprises motor-car, train, inter-city train, high ferro, coach, bus, steamer, subway or light rail.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108141266A (en) * | 2015-10-21 | 2018-06-08 | 华为技术有限公司 | The method of communication device and operation communication device |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107409344B (en) * | 2015-03-17 | 2021-03-16 | 诺基亚技术有限公司 | Wireless routing |
| CN105099534A (en) * | 2015-08-22 | 2015-11-25 | 西安电子科技大学 | Positioning information assistance-based massive multi-input multi-output beamforming method |
| US9787538B2 (en) * | 2015-10-15 | 2017-10-10 | Intel IP Corporation | Wireless gigabit-enabled device configuration |
| TWI591975B (en) * | 2015-12-23 | 2017-07-11 | 財團法人工業技術研究院 | Method of coordination mult-point transmission, control node and wireless communication device |
| CN105634578A (en) * | 2015-12-29 | 2016-06-01 | 九派逐浪（北京）网络通讯技术股份有限公司 | Beam forming device, intelligent antenna and wireless communication equipment |
| CN106027131A (en) * | 2016-07-25 | 2016-10-12 | 清华大学 | Base station and beam forming method |
| CN109327845B (en) * | 2017-08-01 | 2022-04-01 | 中国移动通信有限公司研究院 | Communication method and network side equipment |
| JP7145447B2 (en) * | 2018-08-14 | 2022-10-03 | パナソニックＩｐマネジメント株式会社 | Data transmission device and data transmission method |
| CN110944382B (en) * | 2018-09-25 | 2021-03-09 | 北京紫光展锐通信技术有限公司 | Positioning method of user terminal, base station and computer readable storage medium |
| CN111436053B (en) * | 2019-02-28 | 2022-07-08 | 维沃移动通信有限公司 | Coverage area adjusting method and wireless access network node |
| CN113131978B (en) * | 2019-12-30 | 2022-04-19 | 大唐移动通信设备有限公司 | Precoding matrix configuration method and device based on channel reciprocity |
| CN111565060A (en) * | 2020-04-14 | 2020-08-21 | 中国联合网络通信集团有限公司 | Beam forming method and antenna equipment |
| CN114285442B (en) * | 2021-12-31 | 2023-10-13 | 南京国博电子股份有限公司 | Beam tracking method based on train position triggering |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1729633A (en) * | 2002-10-28 | 2006-02-01 | 高通股份有限公司 | Utilizing speed and position information to select an operational mode in a wireless communication system |
| CN101542937A (en) * | 2007-09-28 | 2009-09-23 | 韩国科学技术院 | Beam division multiple access system and method for mobile communication system |
-
2011
- 2011-11-04 CN CN201110346614.1A patent/CN103095356B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1729633A (en) * | 2002-10-28 | 2006-02-01 | 高通股份有限公司 | Utilizing speed and position information to select an operational mode in a wireless communication system |
| CN101542937A (en) * | 2007-09-28 | 2009-09-23 | 韩国科学技术院 | Beam division multiple access system and method for mobile communication system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108141266A (en) * | 2015-10-21 | 2018-06-08 | 华为技术有限公司 | The method of communication device and operation communication device |
| CN108141266B (en) * | 2015-10-21 | 2020-12-08 | 华为技术有限公司 | Communication device and method of operating a communication device |
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Owner name: SHANGHAI INSTITUTE OF MICROSYSTEM AND INFORMATION Effective date: 20140123 |
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Effective date of registration: 20140123 Address after: 200050, building 5, building 865, No. 13, Changning Road, Shanghai, Shanghai, Changning District Applicant after: Shanghai Jushri Technologies, Inc. Applicant after: Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences Address before: 200050, building 5, building 865, No. 13, Changning Road, Shanghai, Shanghai, Changning District Applicant before: Shanghai Jushri Technologies, Inc. |
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