CN114124215B - Data center internal free space optical communication system transmitter based on wavelet transformation - Google Patents
Data center internal free space optical communication system transmitter based on wavelet transformation Download PDFInfo
- Publication number
- CN114124215B CN114124215B CN202010882847.2A CN202010882847A CN114124215B CN 114124215 B CN114124215 B CN 114124215B CN 202010882847 A CN202010882847 A CN 202010882847A CN 114124215 B CN114124215 B CN 114124215B
- Authority
- CN
- China
- Prior art keywords
- data
- fractal
- optical
- electro
- transmission
- 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.)
- Active
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 41
- 238000004891 communication Methods 0.000 title claims abstract description 22
- 230000009466 transformation Effects 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 239000011159 matrix material Substances 0.000 claims abstract description 5
- 239000013307 optical fiber Substances 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/67—Optical arrangements in the receiver
- H04B10/671—Optical arrangements in the receiver for controlling the input optical signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/691—Arrangements for optimizing the photodetector in the receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0005—Switch and router aspects
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a data center internal free space optical communication system transmitter based on wavelet transformation, which is characterized in that: the system comprises a fractal data former, inverse discrete wavelet transformation, a fractal data synthesizer, a digital-to-analog converter, an electro-optic modulator, a laser, a collimator and a direction selection reflector; the fractal data former receives information data signals from the server, inputs an information data matrix to be transmitted into the fractal data former and generates N fractal data streams with different rates; the inverse discrete wavelet transform performs inverse discrete wavelet transform on fractal data streams from a fractal data former to obtain discrete wavelets of N branches; the electro-optical modulator modulates the transmission data electrical signal onto an optical carrier from a laser to form a transmission optical signal carrying information data. The invention reduces the optical fiber connection between server racks in the data center and saves precious core switch resources.
Description
Technical Field
The invention relates to the field of communication systems of data centers, in particular to a free space optical communication system transmitter in the data center based on wavelet transformation.
Background
Optical communication technology has attracted attention in order to meet the increasing communication bandwidth demands within data centers and to reduce the energy consumption of data centers. Conventional data center network architectures are typically three layers: the access layer, convergence layer and core layer, such a fabric is made up of core switches, convergence switches and access switches, which are typically located on top of the chassis, so they are also called ToR (Top of Rack), which are physically connected to the servers. The aggregation switch connects to the access switch, dividing the servers into different POD (Point of Delivery) depending on the physical location. The convergence layer is composed of a plurality of repeated PODs. Each POD includes a server, a storage and a network device, and performs one or more services. The core switch provides high-speed forwarding for packets entering and exiting the data center, and provides connectivity for multiple convergence layer PODs, including core switches, egress routers, and the like. With the advent of cloud computing, big data, etc., a large amount of traffic is generated between servers in a data center, and according to Cisco Global Cloud Index: forecast and Methodology,2015-2020, 77% of the data center traffic by 2020 will be traffic inside the data center, i.e. east-west traffic. The introduction of virtual machines makes application deployment more and more distributed, and east-west traffic is bigger and bigger, which needs to be processed efficiently, and also ensures predictable low delay. The bandwidth of the traditional data center internal network tri-layer architecture becomes a bottleneck and server-to-server latency varies from traffic path to traffic path.
Disclosure of Invention
The invention aims to provide a free space optical communication system transmitter in a data center based on wavelet transformation, which reduces optical fiber connection between server racks in the data center, has high data rate, higher spectrum utilization rate and better bit error rate performance, about precious core exchanger resources, reduces delay caused by multilayer forwarding in the data center, is convenient for horizontal expansion, flexible and convenient to install, and can meet the requirements of new services such as distributed computation, big data and the like.
In order to achieve the above purpose, the invention adopts the following technical scheme: a data center internal free space optical communication system transmitter based on wavelet transformation, characterized in that: the system comprises a fractal data former, inverse discrete wavelet transformation, a fractal data synthesizer, a digital-to-analog converter, an electro-optic modulator, a laser, a collimator and a direction selection reflector;
the fractal data former receives information data signals from the server, inputs an information data matrix to be transmitted into the fractal data former to generate N fractal data streams with different rates, and is marked as x 0 ，x 1 ，…，x N-1 The lowest rate is R, the rate of each branch is the power of 2, and is recorded as R n As shown in formula (1):
R n ＝2 n ·R (1)；
the discrete wavelet inverse transformation is to perform inverse discrete wavelet transformation on fractal data flow from a fractal data former to obtain discrete wavelets of N branches, and the discrete wavelet inverse transformation is specifically as follows: the waveform of the mth branch is a wavelet function and is marked as discrete wavelet y m (t) as shown in equation (2), wherein y (t) is a mother wavelet function:
the fractal data synthesizer receives the discrete wavelets from the N branches of the inverse discrete wavelet transform, and superimposes the synthesized transmission data signals x (t), as shown in formula (3). Wherein,,
fractal data at t=nt for the mth leg m Time of day data bits, T m Bit period for the mth piece of fractal data:
the analog-to-digital converter converts a transmission data signal x (t) from the waveform data synthesizer to output a transmission data electric signal;
the electro-optical modulator modulates the transmission data electric signal onto an optical carrier wave from a laser to form a transmission optical signal carrying information data;
the collimating mirror is used for modulating the emitted light signals from the electro-optical modulator into parallel light signals;
the direction selection reflector is used for adjusting the transmission direction of the parallel optical signals so as to be transmitted to a designated receiver through a free space atmosphere channel.
The further improved scheme in the technical scheme is as follows:
1. in the above scheme, the optical fiber further comprises a variable optical attenuator for adjusting the transmitting power of the optical signal after the electro-optical conversion.
2. In the above scheme, the electro-optical modulator is a mach-zehnder modulator.
3. In the above scheme, the laser is an external cavity laser.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the data center internal communication system transmitter based on free space optical communication reduces optical fiber connection between server racks in the data center, saves precious core switch resources, reduces delay caused by multilayer forwarding in the data center, facilitates horizontal expansion, and can meet the requirements of new services such as distributed computation, big data and the like; the method also reduces the high data transmission rate and low delay, has high frequency band utilization rate and flexible and convenient installation, and solves the problems faced by the internal network of the data center.
Drawings
FIG. 1 is a schematic diagram of the connections between racks within a data center based on a free space optical communication system of the present invention;
fig. 2 is a schematic diagram of a transmitter principle of an intercom system in a data center according to the present invention.
In the above figures: 1. a fractal data former; 2. inverse discrete wavelet transform; 3. a fractal data synthesizer; 4. a digital-to-analog converter; 5. an electro-optic modulator; 6. a laser; 7. a collimator; 8. a direction selection mirror; 9. a variable optical attenuator.
Detailed Description
In the description of this patent, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element in question must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in this patent will be understood by those of ordinary skill in the art in a specific context.
Example 1: the transmitter of the free space optical communication system in the data center based on wavelet transformation comprises a fractal data former 1, an inverse discrete wavelet transformation 2, a fractal data synthesizer 3, a digital-to-analog converter 4, an electro-optical modulator 5, a laser 6, a collimator 7 and a direction selection reflector 8;
the fractal data former 1 receives information data signals from a server, inputs an information data matrix to be transmitted into the fractal data former to generate N fractal data streams with different rates, and is marked as x 0 ，x 1 ，…，x N-1 The lowest rate is R, the rate of each branch is the power of 2, and is recorded as R n As shown in equation 1:
R n ＝2 n ·R (1)；
the inverse discrete wavelet transform 2 performs inverse discrete wavelet transform on the fractal data stream from the fractal data former 1 to obtain discrete wavelets of N branches, specifically: the waveform of the mth branch is a wavelet function and is marked as discrete wavelet y m (t)，As shown in equation 2, where y (t) is the mother wavelet function:
the fractal data synthesizer 3 receives the discrete wavelets from the N branches of the inverse discrete wavelet transform 2, and superimposes the synthesized transmission data signal x (t), as shown in equation 3. Wherein,,
fractal data at t=nt for the mth leg m Time of day data bits, T m Bit period for the mth piece of fractal data:
the analog-to-digital converter 4 converts the transmission data signal x (t) from the waveform data synthesizer to output a transmission data electric signal;
the electro-optical modulator 5 modulates the transmission data electric signal onto an optical carrier wave from the laser 6 to form a transmission optical signal carrying information data;
the collimator lens 7 is used for modulating the emitted light signals from the electro-optical modulator 5 into parallel light signals;
the direction selection mirror 8 is used for adjusting the transmission direction of the parallel optical signals so as to transmit the parallel optical signals to a designated receiver through a free space atmosphere channel.
The electro-optical modulator 5 is a mach-zehnder modulator.
The laser 6 is an external cavity laser.
Example 2: a data center internal communication system transmitter based on free space optical communication comprises a fractal data former 1, an inverse discrete wavelet transform 2, a fractal data synthesizer 3, a digital-to-analog converter 4, an electro-optical modulator 5, a laser 6, a collimator 7 and a direction selection reflector 8;
the fractal data formationA receiver 1 for receiving information data signals from a server, inputting an information data matrix to be transmitted to a fractal data former, generating N fractal data streams with different rates, denoted as x 0 ，x 1 ，…，x N-1 The lowest rate is R, the rate of each branch is the power of 2, and is recorded as R n As shown in equation 1:
R n ＝2 n ·R (1)；
the inverse discrete wavelet transform 2 performs inverse discrete wavelet transform on the fractal data stream from the fractal data former 1 to obtain discrete wavelets of N branches, specifically: the waveform of the mth branch is a wavelet function and is marked as discrete wavelet y m (t) as shown in equation 2, wherein y (t) is a mother wavelet function:
the fractal data synthesizer 3 receives the discrete wavelets from the N branches of the inverse discrete wavelet transform 2, and superimposes the synthesized transmission data signal x (t), as shown in equation 3. Wherein,,
fractal data at t=nt for the mth leg m Time of day data bits, T m Bit period for the mth piece of fractal data:
the analog-to-digital converter 4 converts the transmission data signal x (t) from the waveform data synthesizer to output a transmission data electric signal;
the electro-optical modulator 5 modulates the transmission data electric signal onto an optical carrier wave from the laser 6 to form a transmission optical signal carrying information data;
the collimator lens 7 is used for modulating the emitted light signals from the electro-optical modulator 5 into parallel light signals;
the direction selection mirror 8 is used for adjusting the transmission direction of the parallel optical signals so as to transmit the parallel optical signals to a designated receiver through a free space atmosphere channel.
A variable optical attenuator 9 is also included for adjusting the transmission power of the electro-optically converted optical signal.
The electro-optical modulator 5 is a mach-zehnder modulator.
The laser 6 is an external cavity laser.
When the free space optical communication system transmitter in the data center based on wavelet transformation is adopted, the free space optical communication system transmitter in the data center based on wavelet transformation reduces optical fiber connection between server racks in the data center, saves precious core switch resources, reduces delay caused by multilayer forwarding in the data center, facilitates horizontal expansion, and can meet the requirements of new services such as distributed computation, big data and the like; the method also reduces the high data transmission rate and low delay, has high frequency band utilization rate and flexible and convenient installation, and solves the problems faced by the internal network of the data center.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (4)
1. A data center internal free space optical communication system transmitter based on wavelet transformation, characterized in that: the device comprises a fractal data former (1), an inverse discrete wavelet transform (2), a fractal data synthesizer (3), a digital-to-analog converter (4), an electro-optic modulator (5), a laser (6), a collimator (7) and a direction selection mirror (8);
the fractal data former (1) receives information data signals from the server, inputs an information data matrix to be transmitted into the fractal data former, generates N fractal data streams with different rates, and is marked as x 0 ，x 1 ，…，x N-1 The lowest rate is R, the rate of each branch is the power of 2, and is recorded as R n As shown in formula (1):
R n ＝2 n ·R (1)；
the inverse discrete wavelet transform (2) performs inverse discrete wavelet transform on fractal data stream from a fractal data former (1) to obtain discrete wavelets of N branches, specifically: the waveform of the mth branch is a wavelet function and is marked as discrete wavelet y m (t) as shown in equation (2), wherein y (t) is a mother wavelet function:
the fractal data synthesizer (3) receives the discrete wavelets from N branches of the inverse discrete wavelet transform (2), and superimposes the synthesized transmission data signal x (t), as shown in formula (3), wherein,
fractal data at t=nt for the mth leg m Time of day data bits, T m Bit period for the mth piece of fractal data:
the digital-to-analog converter (4) converts a transmission data signal x (t) from the waveform data synthesizer to output a transmission data electric signal;
the electro-optical modulator (5) modulates the transmission data electric signal onto an optical carrier wave from the laser (6) to form a transmission optical signal carrying information data;
-said collimator (7) for modulating the emitted light signal from the electro-optical modulator (5) into a parallel light signal;
the direction selection mirror (8) is used for adjusting the transmission direction of the parallel optical signals so as to transmit the parallel optical signals to a designated receiver through a free space atmosphere channel.
2. The wavelet transform-based data center internal free-space optical communication system transmitter of claim 1, wherein: also comprises a variable optical attenuator (9) for adjusting the transmission power of the electro-optically converted optical signal.
3. The wavelet transform-based data center internal free-space optical communication system transmitter of claim 1 or 2, wherein: the electro-optic modulator (5) is a Mach-Zehnder modulator.
4. The wavelet transform-based data center internal free-space optical communication system transmitter of claim 1 or 2, wherein: the laser (6) is an external cavity laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010882847.2A CN114124215B (en) | 2020-08-28 | 2020-08-28 | Data center internal free space optical communication system transmitter based on wavelet transformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010882847.2A CN114124215B (en) | 2020-08-28 | 2020-08-28 | Data center internal free space optical communication system transmitter based on wavelet transformation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114124215A CN114124215A (en) | 2022-03-01 |
| CN114124215B true CN114124215B (en) | 2023-07-14 |
Family
ID=80374645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010882847.2A Active CN114124215B (en) | 2020-08-28 | 2020-08-28 | Data center internal free space optical communication system transmitter based on wavelet transformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114124215B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1695360A (en) * | 2002-09-25 | 2005-11-09 | 松下电器产业株式会社 | DWMC communication apparatus |
| WO2016120661A1 (en) * | 2015-01-27 | 2016-08-04 | Mer-Cello Wireless Solutions Ltd | Full-optical multiwavelet orthogonal frequency divisional multiplexing (ofdm) and demultiplexing |
| CN109743107A (en) * | 2019-03-13 | 2019-05-10 | 苏州大学 | A kind of orthogonal frequency division multiplexing free-space optical communication system based on wavelet transformation |
| CN109889262A (en) * | 2019-03-13 | 2019-06-14 | 苏州大学 | A kind of orthogonal frequency division multiplexing free space optical communication method based on wavelet transformation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9571313B2 (en) * | 2014-09-12 | 2017-02-14 | Mer-Cello Wireless Solutions Ltd. | Full-optical multiwavelet orthogonal frequency divisional multiplexing (OFDM) and demultiplexing |
-
2020
- 2020-08-28 CN CN202010882847.2A patent/CN114124215B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1695360A (en) * | 2002-09-25 | 2005-11-09 | 松下电器产业株式会社 | DWMC communication apparatus |
| CN101764774A (en) * | 2002-09-25 | 2010-06-30 | 松下电器产业株式会社 | Communication apparatus |
| WO2016120661A1 (en) * | 2015-01-27 | 2016-08-04 | Mer-Cello Wireless Solutions Ltd | Full-optical multiwavelet orthogonal frequency divisional multiplexing (ofdm) and demultiplexing |
| CN109743107A (en) * | 2019-03-13 | 2019-05-10 | 苏州大学 | A kind of orthogonal frequency division multiplexing free-space optical communication system based on wavelet transformation |
| CN109889262A (en) * | 2019-03-13 | 2019-06-14 | 苏州大学 | A kind of orthogonal frequency division multiplexing free space optical communication method based on wavelet transformation |
Non-Patent Citations (2)
| Title |
|---|
| "Performance comparison of FFT-OFDM and Discrete Wavelet Transform- based OFDM in Power Line Communications";Zhen Wang et al;《Asia Communications and Photonics Conferene (ACP)》;全文 * |
| Shanhong You et al."Analysis of ultra-short pulse shaping with programmable amplitude and phase masks".《CHINESE OPTICS LETTERS》.2011,全文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114124215A (en) | 2022-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10778332B2 (en) | Patch antenna for wave agility | |
| US8989590B2 (en) | Pluggable OLT in Ethernet passive optical networks | |
| WO2018175615A1 (en) | Re-generation and re-transmission of millimeter waves for building penetration | |
| Zhang et al. | Baseband unit cloud interconnection enabled by flexible grid optical networks with software defined elasticity | |
| WO2020076350A1 (en) | Re-generation and re-transmission of millimeter waves for building penetration using dongle transceivers | |
| CN204906403U (en) | Two modem devices of free space optical communications | |
| CN106385390A (en) | Method and system for realizing 10-gigabit Ethernet electrical port transmission based on FPGA (field programmable gate array) | |
| Chang et al. | Key fiber wireless integrated radio access technologies for 5G and beyond | |
| CN103763161A (en) | Tri-network integration access module and control method thereof | |
| Cheng et al. | Reliable and cost efficient passive optical interconnects for data centers | |
| CN107493523B (en) | All-optical data center network switching system | |
| US9906314B2 (en) | Hybrid fiber millimeter wave wireless system for multi-gigabit connectivity | |
| CN114124215B (en) | Data center internal free space optical communication system transmitter based on wavelet transformation | |
| CN102549946B (en) | Modulator circuit of optical time domain reflectometer test signal, passive optical network and device | |
| WO2024002140A1 (en) | Active optical cable, optical communication network, and optical communication method | |
| CN114124216B (en) | Data center internal free space optical communication system receiver based on wavelet transformation | |
| CN105743580A (en) | Data center internal network interconnection structure based on multiple arrayed waveguide gratings | |
| CN104022831A (en) | Optical and wireless convergence access network based on periodic array waveguide grating | |
| CN213072663U (en) | Data center internal communication system based on free space optical communication | |
| CN110809202B (en) | Passive optical distribution node and electro-optical hybrid double-layer access network | |
| CN209949109U (en) | Electric power optical fiber multiplication system based on wavelength conversion technology | |
| CN203537397U (en) | A transmission unit which is based on an optical network to realize chain type cascade (ONU) | |
| CN110768717B (en) | Free space optical communication system | |
| CN216959872U (en) | Structure for realizing two-path image signal transmission by using wavelength division multiplexing in optical fiber transmission | |
| RU81025U1 (en) | NETWORK DEVICE FOR SUBSCRIBER DIGITAL HUB WITH OPTICAL INTERFACE |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240828 Address after: Room 502, Building 5, 1333 Binhe Road, Huqiu District, Suzhou City, Jiangsu Province 215004 Patentee after: You Shanhong Country or region after: China Address before: 215006 6-306, Lvjun, Langshi xiangmen, Gusu District, Suzhou City, Jiangsu Province Patentee before: You Shanhong Country or region before: China Patentee before: Zhang Peng |
|
| TR01 | Transfer of patent right |