Patents by Inventor Zhenfei Tang

Zhenfei Tang 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: 20190261372
    Abstract: The present invention relates to the field of wireless communications technologies, and provides a method for transmitting a carrier, a base station, user equipment, and a system. The method discloses: sending, by a base station, a second carrier, where the second carrier at least partially shares a same resource area with a first carrier, the resource area includes a plurality of resource elements, and the first carrier and the second carrier occupy different resource elements; and sending, by the base station, blank resource element indication information to user equipment that receives the second carrier, where the blank resource element indication information is used to indicate a position of a resource element occupied by the first carrier in the shared resource area. According to the solutions provided in the embodiments, a resource utilization rate of a communications system is improved, and interference between carriers is avoided.
    Type: Application
    Filed: April 29, 2019
    Publication date: August 22, 2019
    Inventors: Guohua Zhou, Zhenfei Tang, Yueying Zhao, Hao Tang, Peng Zhang, Dongdong Wei
  • Publication number: 20190261359
    Abstract: Embodiments of the present invention provide a power control method and a communications device, and relate to the communications field, to resolve a problem of improper power allocation in a carrier aggregation (CA) and a dual connectivity (DC) technology when a plurality of subcarrier spacings are used in an NR. The method includes: for a terminal configured with a plurality of cells, grouping the plurality of cells into cell groups based on a subcarrier spacing, where a power control mode for the cell groups is configured by a base station as a first power control mode or a second power control mode, and the plurality of cells use either CA or DC. The embodiments of the present invention are used for power control when carriers with the plurality of subcarrier spacings coexist.
    Type: Application
    Filed: May 3, 2019
    Publication date: August 22, 2019
    Inventors: Yafei WANG, Hao TANG, Zhengwei GONG, Zhenfei TANG, Brian CLASSON
  • Publication number: 20190253292
    Abstract: The middle subcarrier of the baseband OFDM signal of each numerology may need to be shifted appropriately with respect to other numerologies to comply with a nested grid. These shifts can be signalled to the UE with an associated overhead. Methods and systems are provided to reduce overhead for OFDM communication. Reduced overhead can translate into increased bandwidth for the system, and/or reduced power/battery consumption in the UE. A transmitter generates an OFDM signal associated with a first subcarrier spacing of a first numerology (?), a middle subcarrier frequency of a set of usable resource blocks (RBs) of the first numerology being offset from a carrier frequency by a first offset having a value (k0,x?) in units of subcarriers, the value of the first offset being defined by a specific formula. The transmitter transmits the OFDM signal according to the first subcarrier spacing and the first offset.
    Type: Application
    Filed: November 26, 2018
    Publication date: August 15, 2019
    Inventors: JAVAD ABDOLI, ZHENFEI TANG
  • Publication number: 20190246397
    Abstract: Embodiments of the present disclosure provide a method for detecting downlink control information. The method includes: determine a parameter A(c), according to an index number c of a physical resource set; determine a search space associated with the physical resource set, according to the parameter A(c), wherein the parameter A(c)=39827 if the index number c is a first index number, the parameter A(c)=39829 if the index number c is a second index number; detecting in the search space, downlink control information from a base station.
    Type: Application
    Filed: April 17, 2019
    Publication date: August 8, 2019
    Inventor: Zhenfei TANG
  • Publication number: 20190215847
    Abstract: A user equipment (UE) receives control signaling in a scheduling bandwidth part (BWP). The control signaling indicates switching from a first active BWP to a second active BWP or switching from a first active BWP pair to a second active BWP pair for the UE. The control signaling aligns with a time unit boundary, such as a slot boundary, that is associated with the scheduling BWP. In the event that a scheduled BWP for a UE has a different numerology than a scheduling BWP that is currently active for the UE, the UE could switch from the scheduling BWP to the scheduled BWP based on a control signaling monitoring periodicity of the scheduled BWP.
    Type: Application
    Filed: December 17, 2018
    Publication date: July 11, 2019
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: JAVAD ABDOLI, ZHENFEI TANG
  • Publication number: 20190215104
    Abstract: A method includes receiving a first assignment for a first transmission with a first hybrid automatic repeat request (HARQ) process identifier (process ID) in a first network resource, receiving a second assignment for a second transmission with a second HARQ process ID in a second network resource, wherein the first network resource and the second network resource differ in a domain other than a time domain, detecting an indication indicating that the first HARQ process ID and the second HARQ process ID map to a same transmission block (TB), and communicating with an access node, a transmission associated with at least one of the first HARQ process ID or the second HARQ process ID.
    Type: Application
    Filed: December 21, 2018
    Publication date: July 11, 2019
    Inventors: Mohamed Adel Salem, Jiayin Zhang, Toufiqul Islam, Zhenfei Tang, Amine Maaref, Jianglei Ma
  • Publication number: 20190215216
    Abstract: Systems and methods are provided for configuring an alignment between various resource grids. A base station transmits alignment information between a first resource grid or a first transmission using the first resource grid, and a second resource grid and a third resource grid. The first resource grid uses a first sub-carrier spacing (SCS) from a first set of SCSs, the second resource grid uses a second SCS from a second set of SCSs, the third resource grid uses a third SCS from the second set of SCSs. The base station transmits a synchronization sequence block (SSB) using the first resource grid, and the base station transmits a first physical downlink shared channel (PDSCH) in assigned resource blocks using at least one of the second resource grid and the third resource grid. A user equipment receives the alignment information, and determines the resource grids based on the alignment information so as to be able to receive the transmitted resource blocks.
    Type: Application
    Filed: January 2, 2019
    Publication date: July 11, 2019
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: JAVAD ABDOLI, ZHENFEI TANG
  • Patent number: 10349391
    Abstract: Embodiments of the present application provide a physical downlink data channel transmission method, a base station, and user equipment. The physical downlink data channel transmission method provided in the embodiments of the present application includes: mapping a physical downlink data channel to a time-frequency resource in at least one timeslot, where a time-frequency resource in each timeslot includes at least one enhanced physical resource block pair, and the enhanced physical resource block pair includes two consecutive physical resource blocks in a frequency domain in a same timeslot; and sending the physical downlink data channel to UE. In the embodiments of the present application, a transmission time interval of the physical downlink data channel can be reduced.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: July 9, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yingyu Zhang, Zhenfei Tang, Zhongfeng Li
  • Patent number: 10334587
    Abstract: A signal scrambling method and apparatus, and a signal descrambling method and apparatus are disclosed. In the signal scrambling method, a communications apparatus scrambles a signal by using a scrambling sequence, and sends the scrambled signal. In the signal descrambling method, a communications apparatus receives a signal, and descrambles the signal by using a scrambling sequence. An initial value of the scrambling sequence is determined based on a time unit number corresponding to a frame structure parameter used for transmitting the signal, so that different scrambling sequences can be used to scramble signals that are transmitted by using different frame structure parameters. Therefore, interference randomization can be implemented for signal scrambling, and this can be applicable to various application scenarios in 5G NR to improve performance.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: June 25, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Ting Wang, Yuanjie Li, Hao Tang, Zhenfei Tang
  • Publication number: 20190191421
    Abstract: A method includes: communicating, by a base station, first UE specific information of UE with the UE in a UE source operating bandwidth resource; and sending, by the base station, information about a UE target operating bandwidth resource of the UE to the UE in a UE calibration bandwidth resource of the UE, where the UE target operating bandwidth resource is used by the base station to communicate second UE specific information of the UE with the UE, and the UE source operating bandwidth resource is not completely the same as the UE calibration bandwidth resource.
    Type: Application
    Filed: February 20, 2019
    Publication date: June 20, 2019
    Inventors: Junchao Li, Hao Tang, Fan Wang, Zhenfei Tang
  • Patent number: 10327225
    Abstract: The present disclosure provides a broadcast message transmission method, a base station and user equipment. The method includes: determining a resource position of a broadcast channel, wherein the broadcast channel occupies M physical resource blocks (PRBs) among m PRBs of a frequency band center of a carrier, m and M are positive integers, M is not greater than m, and m is not greater than the number of the PRBs corresponding to the system bandwidth; mapping the broadcast channel on the resource position; and sending a broadcast message through the broadcast channel.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: June 18, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yuanjie Li, Zhenfei Tang
  • Publication number: 20190174258
    Abstract: A method, a device and a communication system for processing a common search area are provided. The method includes: acquiring resource indication information about a first common search area of a control channel, or resource indication information about a first common search area and resource indication information about at least one second common search area; and determining, according to the resource indication information about the first common search area, or the resource indication information about the first common search area and the resource indication information about at least one second common search area, a location of the first common search area, or locations of the first common search area and at least one second common search area.
    Type: Application
    Filed: November 26, 2018
    Publication date: June 6, 2019
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yuanjie Li, Zhenfei Tang
  • Publication number: 20190174467
    Abstract: Embodiments of the present invention disclose a method, an apparatus, and a system for transmitting control information. The method includes: determining enhanced resource element group numbers in resource blocks, and determining, according to the resource element group numbers, positions of resource elements corresponding to enhanced resource element groups; interleaving the enhanced resource element group numbers, and determining an enhanced control channel element; determining, according to the enhanced control channel element and the positions of the resource elements corresponding to the enhanced resource element groups, positions of resource elements corresponding to the enhanced control channel element; and transmitting corresponding control information on the positions of the resource elements corresponding to the control channel element. The present invention alleviates a problem that channel frequency diversity is poor, and lowers the probability of loss of information of a terminal device.
    Type: Application
    Filed: January 24, 2019
    Publication date: June 6, 2019
    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
    Inventors: Zhenfei Tang, Yuanjie Li
  • Publication number: 20190174257
    Abstract: A method, a device and a communication system for processing a common search area are provided. The method includes: acquiring resource indication information about a first common search area of a control channel, or resource indication information about a first common search area and resource indication information about at least one second common search area; and determining, according to the resource indication information about the first common search area, or the resource indication information about the first common search area and the resource indication information about at least one second common search area, a location of the first common search area, or locations of the first common search area and at least one second common search area.
    Type: Application
    Filed: November 26, 2018
    Publication date: June 6, 2019
    Inventors: Yuanjie LI, Zhenfei TANG
  • Patent number: 10306628
    Abstract: Embodiments of the present disclosure provide a method for determining a control channel search space. The method includes: determining numbers of at least two physical resource sets; determining, according to the numbers, location offsets of search spaces corresponding to the at least two physical resource sets, wherein the determined location offsets of the search spaces comprises at least two different location offsets of the search spaces; and determining, according to the location offsets of the search spaces corresponding to the at least two physical sets, the search spaces corresponding to the at least two physical resource sets. By grouping and numbering resources, and determining different location offsets for different search spaces, a probability of control channel search space conflict can be reduced. Thereby, resources of control channels can be maximized in a case of multiple users, and communication efficiency can be improved.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: May 28, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Zhenfei Tang
  • Publication number: 20190159184
    Abstract: Embodiments of the present invention disclose a method, an apparatus, and a system for transmitting control information. The method includes: determining enhanced resource element group numbers in resource blocks, and determining, according to the resource element group numbers, positions of resource elements corresponding to enhanced resource element groups; interleaving the enhanced resource element group numbers, and determining an enhanced control channel element; determining, according to the enhanced control channel element and the positions of the resource elements corresponding to the enhanced resource element groups, positions of resource elements corresponding to the enhanced control channel element; and transmitting corresponding control information on the positions of the resource elements corresponding to the control channel element. The present invention alleviates a problem that channel frequency diversity is poor, and lowers the probability of loss of information of a terminal device.
    Type: Application
    Filed: January 24, 2019
    Publication date: May 23, 2019
    Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
    Inventors: Zhenfei Tang, Yuanjie Li
  • Publication number: 20190150121
    Abstract: Methods and devices for configuring an initial active downlink bandwidth part as part of an initial access procedure are provided. In one provided method, a base station broadcasts a synchronization signal block (SSB) that includes a control resource set (CORESET) configuration index. The CORESET configuration index is one of a plurality of CORESET configuration indexes, each CORESET configuration index being associated with a respective configuration of a CORESET. Each configuration includes a CORESET frequency size, a CORESET time duration, and a frequency offset of the CORESET with respect to the SSB selected from a set of predefined frequency offsets. The initial active downlink bandwidth part is defined as having the same frequency location and bandwidth as the CORESET. The base station transmits, as part of a physical downlink control channel (PDCCH) within the CORESET, information indicating scheduling of remaining minimum system information (RMSI) in a physical downlink shared channel (PDSCH).
    Type: Application
    Filed: November 13, 2018
    Publication date: May 16, 2019
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: JAVAD ABDOLI, ZHENFEI TANG
  • Publication number: 20190140807
    Abstract: A method and an apparatus for determining an RBG size are provided. In the method, a network device or a terminal determines an RBG size set, where the RBG size set may include one or more possible RBG sizes; and determines a first RBG size included in the RBG size set. The network device allocates a resource to the terminal by using the determined first RBG size. The terminal determines, based on the determined first RBG size, the resource allocated by the network device to the terminal.
    Type: Application
    Filed: December 28, 2018
    Publication date: May 9, 2019
    Inventors: Ting Wang, Zhe Liu, Yuanjie Li, Hao Tang, Zhenfei Tang, Yi Wang, Hua Li, Yongzhao Cao
  • Publication number: 20190140880
    Abstract: Embodiments of this application provide a communication method, a communications apparatus, and a communications system, to determine a physical resource block (PRB) grid when a center frequency of a synchronization signal (SS) is inconsistent with a center frequency of a carrier. The method includes: receiving, by a terminal, an SS from a network device; determining, by the terminal, a first PRB grid based on the SS; receiving, by the terminal, first indication information from the network device, where the first indication information is used to indicate a first frequency offset between the first PRB grid and a second PRB grid; and determining, by the terminal, the second PRB grid based on the first PRB grid and the first frequency offset.
    Type: Application
    Filed: December 28, 2018
    Publication date: May 9, 2019
    Inventors: Xinxian Li, Hao Tang, Zhenfei Tang, Junchao Li
  • Patent number: 10264570
    Abstract: Embodiments of the present invention disclose a method, an apparatus, and a system for transmitting control information. The method includes: determining enhanced resource element group numbers in resource blocks, and determining, according to the resource element group numbers, positions of resource elements corresponding to enhanced resource element groups; interleaving the enhanced resource element group numbers, and determining an enhanced control channel element; determining, according to the enhanced control channel element and the positions of the resource elements corresponding to the enhanced resource element groups, positions of resource elements corresponding to the enhanced control channel element; and transmitting corresponding control information on the positions of the resource elements corresponding to the control channel element. The present invention alleviates a problem that channel frequency diversity is poor, and lowers the probability of loss of information of a terminal device.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: April 16, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhenfei Tang, Yuanjie Li