公开(公告)号：US20200344673A1

公开(公告)日：2020-10-29

申请号：US16925709

申请日：2020-07-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhenyu LI ,  Jinxia HAN ,  Wurong ZHANG ,  Yang NAN

IPC: H04W48/12 ,  H04L1/18 ,  H04W72/04 ,  H04W16/14

Abstract: Embodiments of the present invention relate to the field of communications technologies and provide a method for transmitting system information, an apparatus, and a system, to reduce a delay in obtaining correct system information by a terminal device. One method includes: generating a system information block SIB, and sending the SIB in N time units of a SIB period, wherein a first time unit of the N time units includes a redundancy version number of the SIB that is set to 0, the SIB period comprises T time unit groups, and the T time unit groups comprise TP SIB candidate sending time unit groups, wherein TP≤T , each of the T time unit groups comprises A time units for a clear channel assessment (CCA), and each of the TP SIB candidate sending time unit groups comprises r SIB candidate sending time units, and wherein N is a total quantity of SIB candidate sending time units comprised in one or more of the TP SIB candidate sending time unit groups that the CCA is successful, and N≤TP×r.

公开(公告)号：US20190274167A1

公开(公告)日：2019-09-05

申请号：US16415881

申请日：2019-05-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhenyu LI ,  Hantao LI ,  Chuan LIU ,  Lei HU

IPC: H04W74/08 ,  H04W72/12 ,  H04B17/318 ,  H04L1/00 ,  H04W72/08 ,  H04W52/24

Abstract: Embodiments of the present disclosure provide a data transmission method and apparatus. The method includes: obtaining, by a base station, at least one clear channel assessment (CCA) detection threshold; determining a current CCA detection threshold from the at least one CCA detection threshold; determining transmit power of to-be-sent data based on the current CCA detection threshold; and sending the to-be-sent data to a target terminal based on the transmit power. In this way, a CCA detection threshold is flexibly selected, the transmit power is adaptively adjusted, and a probability of space division multiplexing and spectrum usage efficiency are improved, thereby increasing a system capacity and avoiding interference between systems.

公开(公告)号：US20200169947A1

公开(公告)日：2020-05-28

申请号：US16775409

申请日：2020-01-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhanyang REN ,  Zhenyu LI ,  Wurong ZHANG ,  Jinxia HAN

IPC: H04W48/12 ,  H04W72/04

Abstract: Embodiments of this application provide a communication method and a communications apparatus. An example method includes: sending an ePDCCH to a terminal, where the ePDCCH carries scheduling information of a SIB; and sending a PDSCH to the terminal based on the scheduling information of the SIB, where the PDSCH carries the SIB.

公开(公告)号：US20200053720A1

公开(公告)日：2020-02-13

申请号：US16657636

申请日：2019-10-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhanyang REN ,  Zhijun LI ,  Jinxia HAN ,  Zhenyu LI

IPC: H04W72/04 ,  H04W52/36 ,  H04W16/26

Abstract: Example coverage mode identification methods and apparatus are described. One example method includes determining a first coverage mode by a terminal. The terminal determines a preamble sequence based on the first coverage mode, and sends the preamble sequence to a base station, where the preamble sequence is used to determine the first coverage mode. Because the base station can determine the coverage mode of the terminal by using only the preamble sequence sent by the terminal, without using a channel used to receive a signal of the terminal, resources do not need to be grouped or planned, and there is no need to strictly distinguish between different coverage mode sets or groups.

公开(公告)号：US20200015093A1

公开(公告)日：2020-01-09

申请号：US16573693

申请日：2019-09-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhenyu LI ,  Hantao LI

IPC: H04W16/14 ,  H04W72/12 ,  H04W72/04 ,  H04W74/08 ,  H04W52/24

Abstract: This application provides a signal transmission method, apparatus, and system, and a device. The method may include determining, by a second access network device, that a first channel is idle. The method may also include sending, by the second access network device, first information that indicates occupancy of the first channel, where the first information includes a first power value and first duration, and the first power value is power used by the second access network device to send a signal through the first channel in the first duration. Therefore, spectrum efficiency of an unlicensed spectrum is improved.

公开(公告)号：US20180343589A1

公开(公告)日：2018-11-29

申请号：US16016339

申请日：2018-06-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hantao LI ,  Zhenyu LI ,  Jinxia HAN ,  Sha MA

IPC: H04W28/26 ,  H04W74/08 ,  H04W16/14

CPC classification number: H04W28/26 ,  H04W16/14 ,  H04W74/08 ,  H04W74/0825

Abstract: The present invention discloses a method for sending a channel reservation signal and a base station, and relates to the field of communications technologies, to reduce resource waste. The method provided in embodiments of the present invention includes: detecting, by a base station, whether the base station receives a system signal on an unlicensed channel; and sending, by the base station if the base station detects that the base station receives the system signal on the unlicensed channel, a channel reservation signal on the unlicensed channel to reserve the unlicensed channel.

公开(公告)号：US20210392670A1

公开(公告)日：2021-12-16

申请号：US17378392

申请日：2021-07-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chenwan LI ,  Zhenyu LI ,  Haifeng YU ,  Yuchen WANG ,  Yiling WU

IPC: H04W72/12 ,  H04W72/04 ,  H04W56/00

Abstract: This application provides a system message processing method and apparatus. A terminal receives a master information block (MIB), and obtains indication information. The indication information indicates a type of the MIB. In this way, the terminal can process the MIB based on the type of the MIB. In other words, in embodiments of this application, the terminal may decode the MIB based on the type of the MIB. Therefore, the following case is avoided: The MIB is decoded in a fixed manner, and consequently, the MIB cannot be accurately parsed. In this way, communication efficiency is improved.

公开(公告)号：US20210336751A1

公开(公告)日：2021-10-28

申请号：US17366815

申请日：2021-07-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuchen WANG ,  Chenwan LI ,  Yiling WU ,  Zhenyu LI

IPC: H04L5/00 ,  H04W72/04 ,  H04L27/26

Abstract: The present disclosure discloses example communications methods and apparatuses. One example method includes obtaining effective carrier indication information from a network device. An effective carrier frequency is obtained based on the effective carrier indication information, where the effective carrier indication information includes first information, second information, and third information. The first information includes first indication information, second indication information, or third indication information. The first indication information is used to indicate that carriers are not paired, the second indication information is used to indicate that carriers are paired, the third indication information is used to indicate a paired carrier frequency spacing, the second information is used to indicate a start carrier frequency, and the third information is used to indicate a frequency domain location of an effective carrier relative to a start carrier.

公开(公告)号：US20210153258A1

公开(公告)日：2021-05-20

申请号：US17129354

申请日：2020-12-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jinxia HAN ,  Zhenyu LI ,  Zheng LI ,  Yang NAN ,  Wurong ZHANG

IPC: H04W74/08 ,  H04W76/27 ,  H04W56/00 ,  H04W72/00 ,  H04W72/04

Abstract: Embodiments of this application disclose receiving, by a base station, a random access request message; sending a random access response message based on the preset frame structure; receiving an RRC connection request message based on the preset frame structure; and sending a contention resolution message based on the preset frame structure, to complete random access of a terminal, where the preset frame structure includes a first time-frequency resource segment and a second time-frequency resource segment; the first time-frequency resource segment includes a time-frequency resource used to send a synchronization signal and a PBCH, and further includes an idle time-frequency resource and/or an uplink time-frequency resource used to send uplink information; the second time-frequency resource segment includes an integer quantity of data frames with same duration; and duration of the first time-frequency resource segment is equal to duration of any data frame.

公开(公告)号：US20200252904A1

公开(公告)日：2020-08-06

申请号：US16856443

申请日：2020-04-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhenyu LI ,  Jinxia HAN ,  Yang NAN ,  Wurong ZHANG

IPC: H04W68/02 ,  H04W74/08 ,  H04W72/12

Abstract: A message transmission method and apparatus are provided. The method includes: determining, by a base station in a first sending cycle, a first time unit for sending a first message, where the first sending cycle includes one of the following cycles: a paging cycle or a broadcast cycle, the first message includes one of the following messages: a paging message or a broadcast message, and the first time unit includes one of the following time units: one or more subframes, or one or more slots. When determining, before a start location of the first time unit, that a CCA fails, determining a second time unit(s) for sending the first message; and sending the first message to a terminal device in one or more second time units for sending the first message that are after the first time unit for sending the first message.