公开(公告)号：US11075789B2

公开(公告)日：2021-07-27

申请号：US16235539

申请日：2018-12-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xinxian Li ,  Hao Tang ,  Zhenfei Tang ,  Junchao Li

IPC: H04L27/26 ,  H04L5/00 ,  H04J11/00 ,  H04W56/00 ,  H04W48/12

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.

公开(公告)号：US11063806B2

公开(公告)日：2021-07-13

申请号：US16577379

申请日：2019-09-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhe Liu ,  Hao Tang ,  Wei Chen ,  Liwen Zhang

IPC: H04J3/06 ,  H04L27/26 ,  H04W72/04

Abstract: A synchronization method including: receiving, by a terminal, a system message on a first downlink carrier, where the system message includes first indication information and second indication information, the first indication information indicates a frequency domain range of a first uplink carrier, the second indication information indicates a frequency domain range of a second downlink carrier, and a frequency of the first uplink carrier is presynchronized with a frequency of the second downlink carrier; and receiving, by the terminal, a synchronization signal on the second downlink carrier, to implement frequency synchronization with the first uplink carrier. According to the synchronization method in NR-LTE co-existence, a terminal can implement frequency synchronization with an LTE uplink carrier, so that the terminal can perform uplink transmission by using a frequency domain resource in the LTE uplink carrier.

公开(公告)号：US11051300B2

公开(公告)日：2021-06-29

申请号：US16520590

申请日：2019-07-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yi Qin ,  Hua Li ,  Hao Tang ,  Zhongfeng Li

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00 ,  H04W72/12 ,  H04B7/0413 ,  H04L27/26

Abstract: This application provides an information transmission method and apparatus. A first device sends control information to a second device, where the control information is carried on a control channel, a position of an orthogonal frequency division multiplexing OFDM symbol, to which the control channel is mapped, in a time unit is at least one position in a position set, the time unit is a subframe, a slot, or a mini-slot, the control information is used to schedule at least one resource unit, and the resource unit includes at least one OFDM symbol. In the foregoing solution, complexity of detecting a control channel by a receive end may be reduced.

公开(公告)号：US20210176024A1

公开(公告)日：2021-06-10

申请号：US17180387

申请日：2021-02-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ting Wang ,  Yongzhao Cao ,  Yi Wang ,  Hao Tang ,  Zhenfei Tang

IPC: H04L5/00 ,  H04L1/00 ,  H04W72/04 ,  H04L25/02 ,  H04L27/26

Abstract: A method for obtaining a quantity of resource elements in a communication process, comprising: determines a downlink control information format of downlink control information, obtains, based on the downlink control information format, a quantity of resource elements occupied by a demodulation reference signal (DMRS); and determines a size of transport block (TBS) based on the quantity of resource elements occupied by the DMRS.

公开(公告)号：US20210167935A1

公开(公告)日：2021-06-03

申请号：US17171720

申请日：2021-02-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xinxian Li ,  Hao Tang ,  Zhenfei Tang

IPC: H04L5/00 ,  H04W72/04 ,  H04L1/18

Abstract: This application provides a method for deactivating a carrier and an apparatus. The method includes: A terminal receives first information, where the first information indicates a default bandwidth part (BWP). The terminal deactivates a secondary carrier based on the default BWP. According to the provided embodiments, the secondary carrier is deactivated by using physical layer control information for activating or deactivating a BWP.

公开(公告)号：US20210099987A1

公开(公告)日：2021-04-01

申请号：US17067644

申请日：2020-10-10

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Hao Tang ,  Dongdong Wei

IPC: H04W72/04 ,  H04W72/10

Abstract: The application relates to allocating transmission resources in communication networks that provide low latency services. A terminal receives, from a base station time-frequency resource division information, which indicates a division of a time-frequency resource that is allowed to be used by another service. The division of the time-frequency resource includes one or more resource units in time domain and one or more resource units in frequency domain. The terminal further receives from the base station time-frequency resource indication information, which indicates that, in the time-frequency resource that is allowed to be used by the other service, at least one time domain resource unit and at least one frequency domain resource unit are occupied by the other service. The terminal communicates with the base station using the time-frequency resource except the at least one time-domain resource unit and at least one frequency-domain resource unit that are occupied by the other service.

公开(公告)号：US10939384B2

公开(公告)日：2021-03-02

申请号：US16568999

申请日：2019-09-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Junchao Li ,  Yafei Wang ,  Hao Tang ,  Zhenfei Tang

IPC: H04W52/14 ,  H04L5/00 ,  H04W52/10 ,  H04W72/04

Abstract: A power control method, including receiving indication information, where the indication information indicates a power control parameter specific to a bandwidth part, and sending uplink information on the bandwidth part by using a transmit power, where the transmit power is based on the power control parameter specific to the bandwidth part and is further based on a common power control parameter of a carrier in which the bandwidth part is disposed.

公开(公告)号：US10912080B2

公开(公告)日：2021-02-02

申请号：US16430042

申请日：2019-06-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ting Wang ,  Yuanjie Li ,  Hao Tang ,  Zhenfei Tang

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04J13/10 ,  H04L25/03

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.

公开(公告)号：US20200296758A1

公开(公告)日：2020-09-17

申请号：US16890006

申请日：2020-06-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Junchao Li ,  Hao Tang ,  Zhenfei Tang

IPC: H04W72/12 ,  H04L5/00

Abstract: An embodiment of this application provides a downlink control information transmission method and an apparatus. The method includes: receiving first downlink control information DCI in search space of a first carrier bandwidth part BWP, where if a frequency domain resource allocation type of the first BWP is a type 0, an Lf-bit frequency domain resource allocation indication in the first DCI is an Lf-bit bitmap, and bits in the Lf-bit bitmap in descending order are respectively corresponding to resource block groups RBG 0 to RBG (Lf−1) in a second BWP; and for one bit in the Lf-bit bitmap, when a value of the bit is t1, an allocated resource includes one RBG corresponding to the bit.

公开(公告)号：US20200280964A1

公开(公告)日：2020-09-03

申请号：US16876089

申请日：2020-05-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hua Li ,  Hao Tang ,  Zhenfei Tang

IPC: H04W72/04

Abstract: Various embodiments provide a communication method and a communications apparatus. In those embodiments, a terminal device receives first indication information and second indication information from a network device. The first indication information indicates a position of a first reference point, the second indication information indicates a first quantity, the first quantity is a quantity of offset units between the first reference point and a second reference point, and the second reference point is an endpoint of a first physical resource block (PRB). The terminal device determines a position of the first PRB based on the first indication information, the second indication information, and an identifier of a subcarrier corresponding to the first reference point. Therefore, the terminal device can complete, without learning of a system bandwidth, a process of determining a PRB corresponding to a start point of a PRB number in the system bandwidth.