Patents by Inventor Chunhui Le
Chunhui Le has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20240154706Abstract: This application provides a channel phase calibration method and a related apparatus. The method may include: A first communication device sends reference signals to a second communication device through a plurality of channels. The second communication device performs channel measurement by using the reference signals, and feeds back channel measurement information to the first communication device. The first communication device estimates a phase difference between a first channel and a second channel in the plurality of channels based on the channel measurement information fed back by the second communication device, and obtains, based on the phase difference between the first channel and the second channel, a phase compensation value of a channel other than the first channel and the second channel in the plurality of channels.Type: ApplicationFiled: December 19, 2023Publication date: May 9, 2024Inventors: Senbao Guo, Guibao Li, Chunhui Le
-
Publication number: 20240073080Abstract: A method for obtaining information about a channel and an apparatus are provided. The method includes: obtaining N+1 first feedback signals Yn from a passive inter-modulation source; obtaining first update direction information p based on the N+1 first feedback signals Yn; and obtaining information about a channel with the passive inter-modulation source based on the first update direction information p. According to the method and the apparatus in this application, complexity of obtaining the information about the channel with the passive inter-modulation source can be reduced, time and power consumption required for obtaining the information about the channel can be reduced, and accuracy of the information about the channel can be improved.Type: ApplicationFiled: October 27, 2023Publication date: February 29, 2024Inventors: Qiang HUO, Zhi YANG, Xi CHEN, Chunhui LE
-
Patent number: 11843481Abstract: This application discloses a channel estimation method and apparatus. When time-domain channel estimation is performed on a first slot, the first slot and at least one second slot are first determined. The first slot and each second slot form continuous slots. Then, a first signal corresponding to the first slot and a second signal corresponding to each second slot are obtained, and a time-domain channel estimate for the first slot is determined based on the first signal and each second signal. In embodiments of this application, when a time-domain channel estimate for a specific slot is determined, time-domain channel estimation is performed by using time-domain correlation of channels in combination with signals of a plurality of slots, so as to obtain a more accurate channel estimation result, thereby improving baseband demodulation performance.Type: GrantFiled: April 8, 2022Date of Patent: December 12, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Ying Zhang, Weihua Wang, Chunhui Le
-
Publication number: 20220231887Abstract: This application discloses a channel estimation method and apparatus. When time-domain channel estimation is performed on a first slot, the first slot and at least one second slot are first determined. The first slot and each second slot form continuous slots. Then, a first signal corresponding to the first slot and a second signal corresponding to each second slot are obtained, and a time-domain channel estimate for the first slot is determined based on the first signal and each second signal. In embodiments of this application, when a time-domain channel estimate for a specific slot is determined, time-domain channel estimation is performed by using time-domain correlation of channels in combination with signals of a plurality of slots, so as to obtain a more accurate channel estimation result, thereby improving baseband demodulation performance.Type: ApplicationFiled: April 8, 2022Publication date: July 21, 2022Inventors: Ying ZHANG, Weihua WANG, Chunhui LE
-
Patent number: 11259333Abstract: A method includes: adjusting, by a base station based on a timing adjustment amount, an access timing advance corresponding to user equipment to obtain a target timing advance, where the access timing advance is a timing advance obtained when the user equipment randomly accesses the base station; determining, by the base station based on the target timing advance, whether the user equipment meets a trigger condition; and if the user equipment meets the trigger condition, sending, by the base station, a trigger signal to the user equipment, where the trigger signal is used to trigger the user equipment to send a first random access request to the base station.Type: GrantFiled: December 20, 2019Date of Patent: February 22, 2022Assignee: Huawei Technologies Co., Ltd.Inventors: Chunhui Le, Jingjing Zhang, Yicheng Zheng, Bin Liu
-
Publication number: 20220052881Abstract: This application provides a method and an apparatus for improving multi-user multiplexing performance, a device, and a storage medium. In the method, a network device configures base sequence identifiers for a plurality of terminals by using RRC signaling, where there is no orthogonality between base sequences indicated by the base sequence identifiers of all the terminals; the terminal obtains the base sequence identifier that is configured by the network device by using the RRC signaling, and sends a sounding reference signal SRS based on the base sequence identifier; the network device performs SRS detection on the plurality of terminals based on a quasi-orthogonal sequence, to obtain channel information for sending an SRS by each terminal, and performs channel prediction based on the channel information of each terminal, to obtain a channel prediction result.Type: ApplicationFiled: October 28, 2021Publication date: February 17, 2022Inventors: Senbao GUO, Guibao LI, Chunhui LE, Bo WANG, Heng QIN
-
Publication number: 20220015111Abstract: Embodiments of this application disclose a user pairing method and a related device. The method includes: first, determining a first generation parameter of a first base sequence of a first user and a second generation parameter of a second base sequence of a second user, and the second base sequence is used to generate a second uplink reference signal of the second user; then, determining multiplexing evaluation information based on the first generation parameter and the second generation parameter, where the multiplexing evaluation information may include correlation strength between sequences and interference leakage width; afterwards, determining, based on the multiplexing evaluation information, whether the first user and the second user are successfully paired. Finally, when the first user and the second user are successfully paired, it is determined that the first user and the second user multiplex a same communication resource for communication.Type: ApplicationFiled: September 24, 2021Publication date: January 13, 2022Inventors: Senbao GUO, Chunhui LE, Weihua WANG, Ning YANG
-
Publication number: 20200128590Abstract: A method includes: adjusting, by a base station based on a timing adjustment amount, an access timing advance corresponding to user equipment to obtain a target timing advance, where the access timing advance is a timing advance obtained when the user equipment randomly accesses the base station; determining, by the base station based on the target timing advance, whether the user equipment meets a trigger condition; and if the user equipment meets the trigger condition, sending, by the base station, a trigger signal to the user equipment, where the trigger signal is used to trigger the user equipment to send a first random access request to the base station.Type: ApplicationFiled: December 20, 2019Publication date: April 23, 2020Inventors: Chunhui Le, Jingjing Zhang, Yicheng Zheng, Bin Liu
-
Publication number: 20170063586Abstract: The present invention discloses a method for transmitting data between a baseband processing unit BBU and a remote radio unit RRU, and a data transmission apparatus. The RRU selects partial data in received data, and sends the partial data to the BBU by using a common public interface CPRI; or the BBU performs only channel coding processing or only channel coding processing and constellation mapping processing on the data, and sends processed data to the RRU. Then the RRU performs constellation mapping processing, multiple-antenna multiple-input multiple-output MIMO coding processing, and orthogonal frequency division multiplexing OFDM symbol generation processing on the data, or the RRU performs MIMO coding processing and OFDM symbol generation processing on the data. That is, steps in which data redundancy is added are executed by the RRU.Type: ApplicationFiled: November 11, 2016Publication date: March 2, 2017Inventors: Ke Sun, Yun Liu, Chunhui Le, Linfeng Xia, Chaochao Zhang
-
Patent number: 9398617Abstract: Embodiments of the present invention relate to a method and an apparatus for processing random access in a wireless communication network, and a processing method of a user equipment and an apparatus. The method for processing random access in the communication network includes: the base station receives a first Zadoff-Chu sequence and a second Zadoff-Chu sequence that are sent by a user equipment, a du of the first Zadoff-Chu sequence is smaller than a du of the second Zadoff-Chu sequence; the base station estimates an error range for a round trip delay RTD of the user equipment according to the first Zadoff-Chu sequence, estimates, according to the second Zadoff-Chu sequence, the RTD within the error range for the RTD or a frequency offset of an uplink signal of the user equipment. The problem that the user equipment with a frequency offset accesses a network is solved.Type: GrantFiled: July 8, 2014Date of Patent: July 19, 2016Assignee: Huawei Technologies Co., Ltd.Inventors: Changyu Guo, Li Wan, Chunhui Le, Jing Li, Yan Liu
-
Publication number: 20150003427Abstract: A random access method includes: selecting from a specified number of access sequences used by a cell any one access sequence as a first access sequence; mapping the first access sequence onto a bandwidth according to a preset subcarrier spacing to generate a first random access signal, the subcarrier spacing is less than 1.25 kHz; sending the random access signal to a base station; receiving a timing advance adjustment command; adjusting a timing advance, and sending a first message to the base station according to the adjusted timing advance so that the base station demodulates the first message and enables the terminal to access a physical random access channel. This method allows a terminal at a very long distance to access a physical random access channel.Type: ApplicationFiled: August 27, 2014Publication date: January 1, 2015Inventors: Li WAN, Chunhui LE
-
Publication number: 20140321398Abstract: Embodiments of the present invention relate to a method and an apparatus for processing random access in a wireless communication network, and a processing method of a user equipment and an apparatus. The method for processing random access in the communication network includes: the base station receives a first Zadoff-Chu sequence and a second Zadoff-Chu sequence that are sent by a user equipment, a du of the first Zadoff-Chu sequence is smaller than a du of the second Zadoff-Chu sequence; the base station estimates an error range for a round trip delay RTD of the user equipment according to the first Zadoff-Chu sequence, estimates, according to the second Zadoff-Chu sequence, the RTD within the error range for the RTD or a frequency offset of an uplink signal of the user equipment. The problem that the user equipment with a frequency offset accesses a network is solved.Type: ApplicationFiled: July 8, 2014Publication date: October 30, 2014Inventors: Changyu Guo, Li Wan, Chunhui Le, Jing Li, Yan Liu