CN101385253A - Mimo天线系统的预处理系统和方法 - Google Patents
Mimo天线系统的预处理系统和方法 Download PDFInfo
- Publication number
- CN101385253A CN101385253A CNA2007800014411A CN200780001441A CN101385253A CN 101385253 A CN101385253 A CN 101385253A CN A2007800014411 A CNA2007800014411 A CN A2007800014411A CN 200780001441 A CN200780001441 A CN 200780001441A CN 101385253 A CN101385253 A CN 101385253A
- Authority
- CN
- China
- Prior art keywords
- scheme
- communication unit
- antenna system
- time
- mimo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000007781 pre-processing Methods 0.000 title 1
- 238000004891 communication Methods 0.000 claims abstract description 40
- 238000012545 processing Methods 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims description 31
- 239000011159 matrix material Substances 0.000 claims description 26
- 238000005516 engineering process Methods 0.000 claims description 8
- 230000006870 function Effects 0.000 description 9
- 230000008901 benefit Effects 0.000 description 8
- 238000005259 measurement Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000013598 vector Substances 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 241001556567 Acanthamoeba polyphaga mimivirus Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- CNQCVBJFEGMYDW-UHFFFAOYSA-N lawrencium atom Chemical compound [Lr] CNQCVBJFEGMYDW-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- URWAJWIAIPFPJE-YFMIWBNJSA-N sisomycin Chemical compound O1C[C@@](O)(C)[C@H](NC)[C@@H](O)[C@H]1O[C@@H]1[C@@H](O)[C@H](O[C@@H]2[C@@H](CC=C(CN)O2)N)[C@@H](N)C[C@H]1N URWAJWIAIPFPJE-YFMIWBNJSA-N 0.000 description 1
- 238000005307 time correlation function Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
- H04L1/0019—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy in which mode-switching is based on a statistical approach
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0625—Transmitter arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0631—Receiver arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
- H04B7/0669—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different channel coding between antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
- H04B7/0673—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using feedback from receiving side
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Probability & Statistics with Applications (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Abstract
Description
选择的天线索引 | STBC |
[1,0.6] | [0.6,0] |
选择的天线 | STBC | 选择的天线 | STBC |
[0,τ1] | [τ1,τ2] | [τ2,τ3] | [τ3,+∞] |
Claims (27)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/637,287 | 2006-12-12 | ||
US11/637,287 US8031795B2 (en) | 2006-12-12 | 2006-12-12 | Pre-processing systems and methods for MIMO antenna systems |
PCT/CN2007/070781 WO2008071102A1 (en) | 2006-12-12 | 2007-09-26 | Pre-processing systems and method for mimo antenna systems |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101385253A true CN101385253A (zh) | 2009-03-11 |
CN101385253B CN101385253B (zh) | 2012-06-27 |
Family
ID=39497930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2007800014411A Active CN101385253B (zh) | 2006-12-12 | 2007-09-26 | Mimo天线系统的预处理系统和方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8031795B2 (zh) |
CN (1) | CN101385253B (zh) |
WO (1) | WO2008071102A1 (zh) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011006451A1 (en) * | 2009-07-16 | 2011-01-20 | Huawei Technologies Co., Ltd. | System and method for information feedback in a wireless communications system with coordinated multiple point transmission |
CN102098085A (zh) * | 2009-12-15 | 2011-06-15 | 上海贝尔股份有限公司 | 自适应mimo发送方法和设备 |
CN110635251A (zh) * | 2019-08-21 | 2019-12-31 | 内江喜马雅拉网络技术有限公司 | 2t2r对称天线系统及多输入多输出功率均衡方法 |
WO2020118701A1 (zh) * | 2018-12-14 | 2020-06-18 | 鹤壁天海电子信息系统有限公司 | 一种双向数据传输方法及系统、通信设备 |
CN112204898A (zh) * | 2018-07-06 | 2021-01-08 | 华为技术有限公司 | 用于自适应调节mimo传输方案的设备和方法 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8111998B2 (en) | 2007-02-06 | 2012-02-07 | Corning Cable Systems Llc | Transponder systems and methods for radio-over-fiber (RoF) wireless picocellular systems |
US20100054746A1 (en) | 2007-07-24 | 2010-03-04 | Eric Raymond Logan | Multi-port accumulator for radio-over-fiber (RoF) wireless picocellular systems |
EP2395776B1 (en) * | 2007-09-26 | 2015-06-10 | Huawei Technologies Co., Ltd. | Wireless communication system, base station apparatus and mobile station apparatus for sending feedback information |
US8175459B2 (en) | 2007-10-12 | 2012-05-08 | Corning Cable Systems Llc | Hybrid wireless/wired RoF transponder and hybrid RoF communication system using same |
CN101651880B (zh) * | 2008-08-11 | 2013-12-25 | 株式会社Ntt都科摩 | 多小区协作发送方法 |
KR101041681B1 (ko) | 2008-10-23 | 2011-06-14 | 주식회사 팬택 | 다중 사용자 다중 입출력 기반의 무선랜 시스템에서 데이터전송 스케줄러 및 데이터 전송 스케줄링 방법 |
US8699465B2 (en) * | 2009-11-30 | 2014-04-15 | Qualcomm Incorporated | Forward link data rate control and rate indication for satellite-enabled communications systems |
WO2011066851A1 (en) * | 2009-12-01 | 2011-06-09 | Telefonaktiebolaget L M Ericsson (Publ) | Spatial and temporal pre-equalization |
WO2018201438A1 (en) * | 2017-05-05 | 2018-11-08 | Qualcomm Incorporated | Communication scheme for small cyclic delay diversity reference signals |
CN110300218A (zh) * | 2018-03-23 | 2019-10-01 | 中兴通讯股份有限公司 | 性能调整方法及装置、终端、存储介质、电子装置 |
US11337095B2 (en) * | 2020-01-03 | 2022-05-17 | Qualcomm Incorporated | Forward-looking channel state information prediction and reporting |
US11483042B2 (en) * | 2020-05-29 | 2022-10-25 | Qualcomm Incorporated | Qualifying machine learning-based CSI prediction |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6400761B1 (en) | 1999-09-15 | 2002-06-04 | Princeton University | Method and apparatus for adaptively compensating channel or system variations in precoded communications system |
US6859503B2 (en) * | 2001-04-07 | 2005-02-22 | Motorola, Inc. | Method and system in a transceiver for controlling a multiple-input, multiple-output communications channel |
US7113540B2 (en) | 2001-09-18 | 2006-09-26 | Broadcom Corporation | Fast computation of multi-input-multi-output decision feedback equalizer coefficients |
US6862271B2 (en) | 2002-02-26 | 2005-03-01 | Qualcomm Incorporated | Multiple-input, multiple-output (MIMO) systems with multiple transmission modes |
US7269152B2 (en) * | 2003-02-14 | 2007-09-11 | Motorola, Inc. | Method and apparatus for transmitting information within a communication system |
US7433661B2 (en) | 2003-06-25 | 2008-10-07 | Lucent Technologies Inc. | Method for improved performance and reduced bandwidth channel state information feedback in communication systems |
US8908496B2 (en) * | 2003-09-09 | 2014-12-09 | Qualcomm Incorporated | Incremental redundancy transmission in a MIMO communication system |
KR100976489B1 (ko) | 2003-10-01 | 2010-08-18 | 엘지전자 주식회사 | 이동통신의 다중입력 다중출력 시스템에 적용되는데이터의 변조 및 코딩 방식 제어 방법 |
RU2321949C1 (ru) | 2003-12-05 | 2008-04-10 | Самсунг Электроникс Ко., Лтд. | Устройство и способ передачи данных с помощью выбранного собственного вектора в mimo-системе мобильной связи замкнутого контура |
CN101764633B (zh) | 2004-02-11 | 2016-08-17 | Lg电子株式会社 | 发射和接收数据流的方法和系统 |
US7558554B2 (en) | 2004-02-24 | 2009-07-07 | Broadcom Corporation | Method and system for antenna selection diversity with prediction |
JP4246114B2 (ja) | 2004-05-26 | 2009-04-02 | 日本電信電話株式会社 | Mimo無線信号伝送システム及び方法 |
JP4526883B2 (ja) | 2004-06-28 | 2010-08-18 | 株式会社エヌ・ティ・ティ・ドコモ | 複数アンテナを使用する送受信機および送受信方法 |
US7359470B2 (en) | 2004-09-10 | 2008-04-15 | Mitsubishi Electric Research Laboratories, Inc | Minimizing feedback rate for channel state information in MIMO systems |
AU2005296409B2 (en) * | 2004-10-18 | 2009-10-29 | Lg Electronics Inc. | A method of transmitting feedback information in an orthogononal frequency division multiplexing (OFDM)/OFDM access (OFDMA) mobile communication system |
US7564914B2 (en) | 2004-12-14 | 2009-07-21 | Broadcom Corporation | Method and system for frame formats for MIMO channel measurement exchange |
KR100706634B1 (ko) | 2004-11-12 | 2007-04-11 | 한국전자통신연구원 | 성능이 향상된 다중 안테나 시스템 |
CN100392995C (zh) | 2004-11-17 | 2008-06-04 | 中兴通讯股份有限公司 | 一种多发送天线多接收天线系统中下行链路多用户调度方法 |
US7522555B2 (en) * | 2005-01-21 | 2009-04-21 | Intel Corporation | Techniques to manage channel prediction |
ES2383212T3 (es) | 2005-03-08 | 2012-06-19 | Telefonaktiebolaget L- M Ericsson (Publ) | Metodo y disposición para métricas de enrutamiento avanzadas en redes multi-salto |
JP4884722B2 (ja) * | 2005-03-31 | 2012-02-29 | 株式会社エヌ・ティ・ティ・ドコモ | 無線通信装置及び無線通信方法 |
WO2007024214A1 (en) | 2005-08-19 | 2007-03-01 | Mitsubishi Electric Research Laboratories | Optimal signaling and selection verification for transmit antenna selection with erroneous feedback |
US8064532B2 (en) | 2005-09-30 | 2011-11-22 | Alexander Alexandrovich Maltsev | Method and scheme for space-time coded cochannel interference cancellation |
US20070147536A1 (en) * | 2005-12-27 | 2007-06-28 | Ezer Melzer | Wireless communication device employing interference-sensitive mode selection and associated methods |
KR101232578B1 (ko) | 2006-03-14 | 2013-02-12 | 퀄컴 인코포레이티드 | 다중 안테나 무선 통신 시스템에서 송신 다이버시티 제공장치 및 방법 |
-
2006
- 2006-12-12 US US11/637,287 patent/US8031795B2/en active Active
-
2007
- 2007-09-26 WO PCT/CN2007/070781 patent/WO2008071102A1/en active Application Filing
- 2007-09-26 CN CN2007800014411A patent/CN101385253B/zh active Active
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011006451A1 (en) * | 2009-07-16 | 2011-01-20 | Huawei Technologies Co., Ltd. | System and method for information feedback in a wireless communications system with coordinated multiple point transmission |
US8427978B2 (en) | 2009-07-16 | 2013-04-23 | Futurewei Technologies, Inc. | System and method for information feedback in a wireless communications system with coordinated multiple point transmission |
CN102098085A (zh) * | 2009-12-15 | 2011-06-15 | 上海贝尔股份有限公司 | 自适应mimo发送方法和设备 |
CN112204898A (zh) * | 2018-07-06 | 2021-01-08 | 华为技术有限公司 | 用于自适应调节mimo传输方案的设备和方法 |
CN112204898B (zh) * | 2018-07-06 | 2022-07-29 | 华为技术有限公司 | 用于自适应调节mimo传输方案的设备和方法 |
WO2020118701A1 (zh) * | 2018-12-14 | 2020-06-18 | 鹤壁天海电子信息系统有限公司 | 一种双向数据传输方法及系统、通信设备 |
CN110635251A (zh) * | 2019-08-21 | 2019-12-31 | 内江喜马雅拉网络技术有限公司 | 2t2r对称天线系统及多输入多输出功率均衡方法 |
CN110635251B (zh) * | 2019-08-21 | 2021-04-09 | 内江喜马雅拉网络技术有限公司 | 2t2r对称天线系统及多输入多输出功率均衡方法 |
Also Published As
Publication number | Publication date |
---|---|
CN101385253B (zh) | 2012-06-27 |
US20080137635A1 (en) | 2008-06-12 |
US8031795B2 (en) | 2011-10-04 |
WO2008071102A1 (en) | 2008-06-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101385253B (zh) | Mimo天线系统的预处理系统和方法 | |
US8325842B2 (en) | Method and apparatus for pre-processing data to be transmitted in multiple-input communication system | |
US8711964B2 (en) | Method and apparatus for pre-scheduling in closed-loop MU-MIMO antenna system | |
US20070155336A1 (en) | Apparatus and method for eliminating multi-user interference | |
US20080076370A1 (en) | Methods for optimal collaborative MIMO-SDMA | |
US20080043865A1 (en) | Method and apparatus for transmitting/receiving feedback information and system supporting the same in a multi-user multi-antenna system | |
US9432100B2 (en) | Efficient search of precoders in precoded MIMO systems | |
US8280426B2 (en) | Adaptive power balancing and phase adjustment for MIMO-beamformed communication systems | |
CN102415032B (zh) | 码本构建方法和设备以及预编码方法、设备和系统 | |
US8767861B2 (en) | Multiple input multiple output and beam-forming data transmission method and device | |
US9166662B1 (en) | Methods and apparatus for antenna spoofing | |
CN102185641A (zh) | Mimo-ofdm无线网络中天线映像选择方法及装置 | |
US7839810B2 (en) | Transmitter, communication system and communication method | |
KR20080095732A (ko) | 다중 입출력 안테나 시스템에서, 코드북 구성방법 및 신호전송 방법 | |
CN115549745B (zh) | Ris相移设计方法、装置、计算机设备及存储介质 | |
Wennstrom et al. | Transmit antenna diversity in Ricean fading MIMO channels with co-channel interference | |
CN101645757B (zh) | 一种预编码矩阵选择方法和装置 | |
KR20230138538A (ko) | 정보 리포팅 방법, 장치, 제1 장치 및 제2 장치 | |
US9973247B2 (en) | Wireless communication system | |
Islam et al. | Robust precoding for orthogonal space-time block coded MIMO cognitive radio networks | |
Sung et al. | A simple algorithm for closed-loop transmit diversity with a low-data-rate feedback channel | |
WO2023179473A1 (zh) | 信道特征信息上报及恢复方法、终端和网络侧设备 | |
JP4485530B2 (ja) | 無線通信のための方法及び機器 | |
WO2023179476A1 (zh) | 信道特征信息上报及恢复方法、终端和网络侧设备 | |
Bharath et al. | Channel estimation at the transmitter in a reciprocal MIMO spatial multiplexing system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: TCL COMMUNICATION TECHNOLOGY HOLDING CO., LTD. Free format text: FORMER OWNER: HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE COMPANY LIMITED Effective date: 20131104 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20131104 Address after: Room 19, building third, central, 33 Guangdong Road, Tsim Sha Tsui, Kowloon, Hongkong, China Patentee after: TCL Communications Technology Holdings Limited Address before: Hongkong, China Patentee before: China Hongkong applied science and Technology Research Institute Co Ltd |
|
TR01 | Transfer of patent right |
Effective date of registration: 20190521 Address after: Room OMC, Reef 1, Wickham, Rhode Town, Tortola Island, British Virgin Islands Patentee after: Yisheng Management Consulting Co., Ltd. Address before: Room 19, building third, central, 33 Guangdong Road, Tsim Sha Tsui, Kowloon, Hongkong, China Patentee before: TCL Communication Technology Holdings Limited |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20210120 Address after: California, USA Patentee after: Facebook, Inc. Address before: Room OMC, Reef 1, Wickham, Rhode Town, Tortola Island, British Virgin Islands Patentee before: Yisheng Management Consulting Co.,Ltd. |
|
TR01 | Transfer of patent right | ||
CP01 | Change in the name or title of a patent holder |
Address after: California, USA Patentee after: Yuan platform Co. Address before: California, USA Patentee before: Facebook, Inc. |
|
CP01 | Change in the name or title of a patent holder |