Patents by Inventor Yunbo Li

Yunbo Li 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).

  • Multiple Objective Optimization Route Selection Method Based on Step Ring Grid Network for Power Transmission Line
    Publication number: 20210342502
    Abstract: A multiple objective optimization route selection method based on a step ring grid network for a power transmission line is configured to use multiple data for regional classification and to select virtual topological nodes to construct a virtual topology map. An overall route is planed according to the shortest and optimization route selection method. After selecting the virtual topology route, a semi annular domain of a step ring grid map is constructed through the connections of the topological nodes. After the segmentation of the semi-annular domain to form a plurality of grids, the grids are numbered. The grid attributes of the grids are used for optimizing the route. The multiple objective optimization function is constructed according to a distance function, a cost objective function and an angle cornering objective function, in order to collaboratively optimize the transmission line route.
    Type: Application
    Filed: September 25, 2019
    Publication date: November 4, 2021
    Inventors: Jian FENG, Chunyang YU, Senxiang LU, Chengze REN, Dazhong MA, Yunbo LI, Linping XU
  • Wireless local area network data transmission method and apparatus for flexibly configuring a bandwidth mode
    Patent number: 11146353
    Abstract: A wireless local area network data transmission method and an apparatus, such that a bandwidth mode can be flexibly configured, and idle channel utilization and a throughput can be increased. The method includes sending, by a first station (STA), respective preambles and data on a primary channel and at least one secondary channel of a communication channel to a second STA, where the at least one secondary channel includes some secondary channels of the communication channel, and a bandwidth (BW) sub-field in the preamble is set to a value that indicates a complete bandwidth of the communication channel and that indicates skipping preamble puncturing.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: October 12, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yunbo Li, Sheng Liu
  • Communication method, access point, and station for improving bandwidth utilization
    Patent number: 11116003
    Abstract: A communication method disclosed in the present disclosure includes: receiving, by an access point, a sending request sent by a first station, and sending clear to send information to the first station; when the access point receives feedback information sent by the first station, allocating, by the access point, a channel to the first station, and allocating a channel to a second station based on remaining bandwidth; generating a first trigger frame, and sending the first trigger frame to the first station and the second station; and receiving uplink data sent by the first station and the second station. The present disclosure further provides an access point and a station that can implement the communication method. According to the present disclosure, bandwidth utilization of the access point and data transmission efficiency can be improved.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: September 7, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yanchun Li, Yunbo Li
  • MULTI-BAND INDICATION METHOD AND COMMUNICATIONS DEVICE
    Publication number: 20210266904
    Abstract: Embodiments of this application disclose a multi-band indication method and a communications device, to implement band indication in a multi-band aggregation scenario and improve resource utilization efficiency. The multi-band indication method provided in the embodiments of this application includes: A first communications device generates a first frame. The first frame includes a first operating class field, and when a basic service set BSS established by the first communications device simultaneously works in a first band and a second band, the first operating class field is used to indicate a starting frequency of the second band. The first band is a band that includes a primary channel, and the second band is a band that does not include the primary channel. The first communications device sends the first frame.
    Type: Application
    Filed: May 6, 2021
    Publication date: August 26, 2021
    Inventors: Yuchen GUO, Yunbo LI
  • Receiving state indication method for A-MPDU and receive end device
    Patent number: 11075717
    Abstract: A receiving state indication method for an aggregate-media access control (MAC) protocol data unit (A-MPDU) and a receiving device, to indicate a receiving state of an A-MPDU including a MAC service data unit (MSDU) fragment. The method includes receiving, by a receive end, an A-MPDU sent by a transmit end; and when determining that at least one MAC protocol data unit (MPDU) in the A-MPDU is obtained by encapsulating a fragment of an MSDU, sending, by the receive end to the transmit end, an acknowledgement frame used to indicate a receiving state of the A-MPDU, where the acknowledgement frame includes a fragment indication field and a receiving state field.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: July 27, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Ming Gan, Le Liu, Yunbo Li
  • ASSOCIATION ESTABLISHMENT METHOD AND APPARATUS
    Publication number: 20210195664
    Abstract: An association establishment method and apparatus for carrying out the method are described. The association establishment method includes broadcasting, by an access point (AP), a trigger frame, wherein the trigger frame is used to trigger one or more unassociated stations STAs to perform uplink data transmission and indicate one or more available subchannels for random accessing of the unassociated STAs. The method further comprises receiving, by the AP, one or more association request messages sent on available subchannels acquired by the unassociated STAs. Thereafter, the AP broadcasts a multi-block acknowledgement M-BA frame, wherein the M-BA frame includes one or more pieces of association acknowledgement information and the association acknowledgement information is acknowledgement information of the association request message.
    Type: Application
    Filed: December 30, 2020
    Publication date: June 24, 2021
    Inventors: Ming GAN, Le LIU, Yunbo LI, Meilu LIN
  • Method And Apparatus For Implementing Collision Detection In Data Transmission
    Publication number: 20210176786
    Abstract: Example methods and apparatus for implementing collision detection in data transmission are described, One example method includes sending a data packet including collision detection information to a receive end, where the collision detection information is used by the receive end to perform collision detection on the data packet. A status indication message sent by the receive end is received by the receive end when sending the data packet. The receive end parses the status indication message. If the status indication message includes collision information, the receive end perform retransmission of the data packet.
    Type: Application
    Filed: February 22, 2021
    Publication date: June 10, 2021
    Inventors: Dandan LIANG, Ming GAN, Xin ZUO, Yunbo LI
  • Multi-Band Transmission Method and Apparatus
    Publication number: 20210176019
    Abstract: A multi-band transmission method implemented by a receive end, where the method includes: receiving data packets in parallel from a transmit end using M frequency bands, where the data packets belong to a same traffic stream; receiving a BAR from the transmit end, where the BAR carries an SSN and requests a receiving state of a data packet from the transmit end on the mth frequency band; marking an mth state for an unreceived data packet whose SN is before the SSN; marking one or more unreceived data packets with a discarded state when determining the one or more unreceived data packets are marked with a first state, a second state, . . . , and an Mth state; determining whether there are data packets with consecutive SNs; and if yes, submitting a data packet that is in the received state and in the data packets with the consecutive SNs.
    Type: Application
    Filed: February 23, 2021
    Publication date: June 10, 2021
    Inventors: Ying Wang, Yunbo Li, Yuchen Guo, Guogang Huang
  • DATA SCHEDULING METHOD AND APPARATUS
    Publication number: 20210168830
    Abstract: A data scheduling method and apparatus. The method includes: allocating, by an access point (AP), at least one of a plurality of primary channels to each of a plurality of stations (STAs), where active access is forbidden on the plurality of primary channels; and synchronously scheduling, by the AP, a STA on a channel including at least one idle primary channel, where the synchronously scheduled STA is a STA allocated to the at least one idle primary channel, and the at least one idle primary channel is at least one of the plurality of primary channels. In the embodiments, the AP sets the plurality of primary channels, so that the AP can flexibly schedule the station by using the idle primary channel This avoids a problem caused by setting only one primary channel, thereby improving data transmission efficiency.
    Type: Application
    Filed: February 8, 2021
    Publication date: June 3, 2021
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Yunbo LI
  • PHYSICAL LAYER CONVERGENCE PROCEDURE PROTOCOL DATA UNIT COMMUNICATION METHOD AND RELATED APPARATUS
    Publication number: 20210160113
    Abstract: This application provides a physical layer convergence procedure protocol data unit communication method and a related apparatus. The method includes: receiving, by a receiving apparatus, a physical layer convergence procedure protocol data unit PPDU sent by a sending apparatus, where the PPDU includes synchronization adjustment indication information and a data field, and the synchronization adjustment indication information and the data field are sent in a bandwidth less than 20 MHz; and performing, by the receiving apparatus, time synchronization and automatic gain control AGC on the data field based on the synchronization adjustment indication information. According to this solution, the receiving apparatus can perform, by using the synchronization adjustment indication information, time synchronization and automatic gain control AGC on the PPDU transmitted in a narrow bandwidth.
    Type: Application
    Filed: February 1, 2021
    Publication date: May 27, 2021
    Inventors: Ming Gan, Jia Jia, Yunbo Li, Peter Loc
  • Data transmission method and related apparatus
    Patent number: 11019615
    Abstract: Embodiments of this application disclose a data transmission method and a related apparatus. The method in the embodiments of this application includes: obtaining a set of link information and a set of indication information of at least two links, where the link information is used to indicate a sender of a radio frame transmitted on a link, a receiver of the radio frame, and a transmission time interval of the radio frame, the indication information is used to indicate whether the receiver successfully receives the radio frame transmitted on the link, and transmission time intervals of radio frames transmitted on all of the at least two links have an overlapping target time interval; and determining a target link group based on the set of link information and the set of indication information of the at least two links.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: May 25, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Weimin Wu, Yuanyuan Peng, Jian Yu, Yunbo Li
  • Bandwidth Information Indication Method and Communications Device
    Publication number: 20210153210
    Abstract: A bandwidth information indication method includes generating, by a first communications device, a first frame, where the first frame includes a channel bandwidth field, a first channel center frequency segment field, a second channel center frequency segment field, a third channel center frequency segment field, and a fourth channel center frequency segment field, where the channel bandwidth field indicates a basic service set (BSS) bandwidth, and the first channel center frequency segment field, the second channel center frequency segment field, the third channel center frequency segment field, and the fourth channel center frequency segment field indicate a location of an operating channel of a BSS, and sending, by the first communications device, the first frame.
    Type: Application
    Filed: January 27, 2021
    Publication date: May 20, 2021
    Inventors: Yunbo Li, Ming Gan
  • Resource Unit Indication Method and Apparatus, and Storage Medium
    Publication number: 20210143966
    Abstract: A resource unit indication method and apparatus, and a storage medium, where the method includes: an access point (AP) sending a physical protocol data unit (PPDU) to a plurality of stations (STAs), where a transmission bandwidth of the PPDU is divided into M subblocks, M is an integer greater than 1, the transmission bandwidth is greater than or equal to 80 megahertz (MHz), the PPDU includes M first fields, the M first fields are in a one-to-one correspondence with the M subblocks, the first field is transmitted on a corresponding subblock, and the first field is used to indicate a resource unit (RU) allocated by the AP to at least one of the plurality of STAs.
    Type: Application
    Filed: January 25, 2021
    Publication date: May 13, 2021
    Inventors: Jian Yu, Ming Gan, Yunbo Li
  • Data transmission method and device
    Patent number: 11006420
    Abstract: Disclosed is a data transmission method. The method comprises: reserving a first channel and a second channel, where the first channel is used for transmitting data and the second channel is used for transmitting ACKs; sending data to a receiving end on the first channel that is reserved; receiving an ACK that is sent by the receiving end and corresponds to the data on the second channel that is reserved and determining whether the data needs to be cached based on information carried in the ACK; and if the information carried in the ACK indicates that the receiving end has correctly received the data, clearing the data that is cached by a sending end. Through separate transmission of the data and the ACK, an efficiency problem of the sending end in providing MAC in a wireless system in a condition of a limited cache capacity is resolved.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: May 11, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xun Yang, Tianyu Wu, Yunbo Li
  • DATA TRANSMISSION METHOD AND RELATED APPARATUS
    Publication number: 20210136764
    Abstract: The present disclosure relates to data transmission methods and related apparatus. In one example method, a first node sends a to-be-sent frame whose classification attribute value belongs to the first frequency block classification range to a second node by using a first frequency block. The classification attribute value of the to-be-sent frame includes at least one of a frame type, a transmission rate, quality of service, a quality of service access category, a spatial stream, sending duration, a data packet format, or a data packet bandwidth.
    Type: Application
    Filed: January 8, 2021
    Publication date: May 6, 2021
    Inventors: Jian YU, Yunbo LI
  • Channel Access Method and Apparatus
    Publication number: 20210136817
    Abstract: A channel access method and apparatus, where the method includes: determining, by a station, backoff duration based on a current first contention window; determining random padding duration based on a current second contention window when the backoff duration is reached; sending, on a channel, padding data whose duration is the random padding duration; detecting a state of the channel after the padding data is sent; and sending data on the channel if the state of the channel is an idle state.
    Type: Application
    Filed: January 12, 2021
    Publication date: May 6, 2021
    Inventors: Ying Wang, Yunbo Li, Shimon Shilo, Genadiy Tsodik, Leonid Epstein
  • Joint Transmission Method and Communications Apparatus
    Publication number: 20210127290
    Abstract: A joint transmission method includes sending, using a first access point (AP), a buffer indication to a second AP instructing the second AP to buffer first data, sending the first data to a station (STA), receiving a response frame from the STA, determining, based on the response frame, whether a joint transmission procedure needs to be initiated, sending a joint transmission indication to a third AP in response to determining to initiate the joint transmission procedure, where the joint transmission indication instructs the third AP to send second data to the STA, where the second data comprises all or a part of the first data, and where the third AP is the second AP, and sending the second data.
    Type: Application
    Filed: January 6, 2021
    Publication date: April 29, 2021
    Inventors: Mao Yang, Bo Li, Yunbo Li
  • Bandwidth Mode Indication Method and Apparatus, and Channel Indication Method and Apparatus
    Publication number: 20210105667
    Abstract: When a first device is an EHT site, a second device generates a frame in a first non-HT format or a frame in a first non-HT duplicated format, where at least three bits in the first seven bits of a scrambling sequence of the frame in the first non-HT format or the frame in the first non-HT duplicated format indicate a bandwidth mode of a channel; or when a first device is a VHT site or an HE site that does not support an EHT, a second device generates a frame in a second non-HT format or a frame in a second non-HT duplicated format, where two bits in the first seven bits of a scrambling sequence of the frame in the second non-HT format or the frame in the second non-HT duplicated format indicate a bandwidth mode of a channel.
    Type: Application
    Filed: December 18, 2020
    Publication date: April 8, 2021
    Inventors: Yunbo Li, Jian Yu, Ming Gan
  • OFDMA contention method and access point
    Patent number: 10959266
    Abstract: Embodiments of the invention provide a contention method. The contention method includes: receiving, by an access point, an uplink frame transmitted by a station; transmitting, by the access point, a frame responding to the uplink frame. The frame responding to the uplink frame is used to acknowledge the uplink frame and trigger the station to enter the next channel contention period. The contention method can acknowledge the uplink frame and trigger the station to enter the next channel contention period.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: March 23, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yunbo Li, Tianyu Wu, Lianbo Zhang
  • System and method for preambles in a wireless communications network
    Patent number: 10945157
    Abstract: A method for transmitting a frame includes generating an omni portion of the frame, the omni portion including a non-beamformed long training field and a signal field, the non-beamformed long training field including channel estimation information used to decode the signal field, the non-beamformed long training field configured to be transmitted through one of multiple antennas and multiple streams. The method also includes generating a multi-stream portion of the frame, the multi-stream portion including a data field and a multi-stream long training field, the multi-stream long training field including station-specific decoding information for station-specific data in the data field. The method further includes applying a beamforming indicator to the signal field of the omni portion, and transmitting the frame.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: March 9, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jung Hoon Suh, Yunbo Li, Kwok Shum Au, Osama Aboul-Magd, Sheng Sun