公开(公告)号：US20240040392A1

公开(公告)日：2024-02-01

申请号：US18477056

申请日：2023-09-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Liang QIAO ,  Keyvan ZARIFI ,  Jiayin ZHANG

IPC: H04W16/14 ,  H04W48/16 ,  H04W48/10

CPC classification number: H04W16/14 ,  H04W48/16 ,  H04W48/10

Abstract: This application provides a communication method and apparatus. The method is applied to an unlicensed band, and includes: receiving first information sent by a network device, where the first information includes a Q value or a first parameter, and the first parameter indicates a status of a discovery burst transmission window DBTW; and determining the status of the DBTW based on the Q value or the first parameter. According to the solution provided in this application, a terminal device can determine the status of the DBTW, to quickly implement timing synchronization with the network device.

公开(公告)号：US20220264641A1

公开(公告)日：2022-08-18

申请号：US17733246

申请日：2022-04-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qiong JIA ,  Jiayin ZHANG ,  Ji WU

IPC: H04W74/08 ,  H04L1/18

Abstract: Embodiments provide a HARQ feedback method and apparatus, to resolve a current-technology problem that subsequent transmission is affected because a terminal device cannot provide a HARQ feedback in time due to uncertainty of LBT. The method includes: A first terminal device performs LBT, and sends HARQ information of a plurality of second terminal devices on a channel resource on which the LBT succeeds, so that for different second terminal devices, the first terminal device does not perform LBT for a plurality of times, thereby reducing LBT overheads, and overcoming a problem that HARQ information corresponding to some second terminal devices cannot be sent in time due to an LBT failure.

公开(公告)号：US20220263613A1

公开(公告)日：2022-08-18

申请号：US17738926

申请日：2022-05-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Weiwei FAN ,  Jiayin ZHANG

IPC: H04L5/00

Abstract: Embodiments of this application provide a resource configuration method and apparatus, so as to improve resource utilization during D2D communication. A first terminal device receives scheduling information that is sent by a network device and that is used to indicate an uplink time-frequency resource used for the first terminal device, and the first terminal device can multiplex the uplink time-frequency resource to send a sidelink signal to a second terminal device when an interference value to the network device during sending of the sidelink signal meets a first rule. Therefore, the uplink time-frequency resource of the first terminal device is multiplexed while interference is considered during sidelink transmission, thereby improving resource utilization.

公开(公告)号：US20210392675A1

公开(公告)日：2021-12-16

申请号：US17403615

申请日：2021-08-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin ZHANG ,  Qiong JIA

IPC: H04W72/12 ,  H04L1/18 ,  H04L5/00

Abstract: This application provides a feedback information sending method and apparatus and a feedback information receiving method and apparatus. A communications device to which the foregoing methods are applied sends or receives feedback information by using different feedback processes. When a network device does not determine whether a previous piece of feedback information is successfully received, the network device indicates a terminal device to send feedback information of a next piece of downlink data by using a new feedback process, and can schedule the next piece of downlink data without waiting for completion of processing of the previous piece of feedback information, thereby reducing a transmission delay.

公开(公告)号：US20200229223A1

公开(公告)日：2020-07-16

申请号：US16837827

申请日：2020-04-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin ZHANG ,  Jun ZHU ,  Yingpei LIN ,  Xun YANG

IPC: H04W72/12 ,  H04W74/00

Abstract: A method comprises constructing, by an access point (AP), a radio frame within a scheduling window, the radio frame including at least a preamble part compatible with an existing IEEE 802.11 preamble legacy preamble, a preamble part used in a next-generation IEEE 802.11 standard (HEW preamble), and the first downlink subframe (DL subframe); sending the Legacy preamble, the HEW preamble and the first DL subframe in the radio frame; receiving at least one uplink subframe (UL subframe) located after the first DL subframe; wherein each of the at least one UL subframes is triggered by one DL subframe located before the UL subframe.

公开(公告)号：US20200008238A1

公开(公告)日：2020-01-02

申请号：US16565437

申请日：2019-09-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lei HUANG ,  Yingpei LIN ,  Jiayin ZHANG

IPC: H04W74/08 ,  H04W72/04

Abstract: A channel access method is provided. Under the method, a network element performs random backoff listen before talk (LBT) for channel preemption, and after the preemption succeeds, performs signal transmission in the first transmission time interval TTI within a maximum channel occupancy time MCOT. The network element also performs nonrandom backoff LBT for channel preemption before another at least one TTI within the maximum channel occupancy time MCOT. This is to ensure coexistence and performance of systems when an LBT requirement of a high unlicensed frequency band is met.

公开(公告)号：US20190246415A1

公开(公告)日：2019-08-08

申请号：US16384522

申请日：2019-04-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin ZHANG ,  Jun ZHU ,  Yingpei LIN ,  Xun YANG

IPC: H04W72/12 ,  H04W74/00

CPC classification number: H04W72/1273 ,  H04W74/00 ,  H04W84/12

Abstract: A method comprises constructing, by an access point (AP), a radio frame within a scheduling window, the radio frame including at least a preamble part compatible with an existing IEEE 802.11 preamble legacy preamble, a preamble part used in a next-generation IEEE 802.11 standard (HEW preamble), and the first downlink subframe (DL subframe); sending the Legacy preamble, the HEW preamble and the first DL subframe in the radio frame; receiving at least one uplink subframe (UL subframe) located after the first DL subframe; wherein each of the at least one UL subframes is triggered by one DL subframe located before the UL subframe.

公开(公告)号：US20190007978A1

公开(公告)日：2019-01-03

申请号：US16125247

申请日：2018-09-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Genadiy TSODIK ,  Shimon SHILO ,  Doron EZRI ,  Avi WEITZMAN ,  Jiayin ZHANG

IPC: H04W74/08 ,  H04W76/11 ,  H04W48/04 ,  H04W8/00

CPC classification number: H04W74/0833 ,  H04W8/005 ,  H04W48/04 ,  H04W72/0406 ,  H04W72/0446 ,  H04W74/006 ,  H04W76/11

Abstract: The application relates to an access point type communication device (110) configured to allocate a plurality of random access resources to a set of associated client type communication devices (120a-c). The access point type communication device (110) comprises a controller (111) configured to maintain a set of association identifiers, wherein each identifier of the set of association identifiers is configured to identify a respective client type communication device of the set of client type communication devices (120a-c), as well as a set of random access identifiers. In an embodiment, the access point type communication device (110) further comprises an allocator (113) configured to allocate the plurality of random access resources to the set of client type communication devices (120a-c) on the basis of the set of random access identifiers.

公开(公告)号：US20180049174A1

公开(公告)日：2018-02-15

申请号：US15795584

申请日：2017-10-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun LUO ,  Jiayin ZHANG ,  Jiyong PANG

IPC: H04W72/04

Abstract: The present invention provides a WLAN system resource indication method and apparatus. The method includes: generating, by an access point, a frame that carries resource indication information; and sending, to multiple stations, the frame that carries the resource indication information. The resource indication information includes multiple pieces of sub resource indication information. Correspondingly, each piece of the sub resource indication information uniquely corresponds to one of the multiple stations. Therefore, a station side does not need read the entire resource indication information, so as to reduce resource overheads and improve efficiency.

公开(公告)号：US20170170933A1

公开(公告)日：2017-06-15

申请号：US15443360

申请日：2017-02-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiayin ZHANG ,  Jun ZHU

IPC: H04L5/00 ,  H04W40/02 ,  H04W72/04

CPC classification number: H04L5/0007 ,  H04L1/02 ,  H04L1/06 ,  H04L25/022 ,  H04L25/0224 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2647 ,  H04W40/02 ,  H04W72/0446 ,  H04W72/0453

Abstract: This application provides a data sending method, a channel estimation method, and apparatuses thereof. The data sending method includes: performing Fourier transform on a first time domain sequence to obtain a first frequency domain sequence; determining, according to a maximum multipath delay of a system transmission channel, bandwidth of the channel, and a subcarrier quantity NFFT, a maximum quantity of spatial flows that can be supported by a single symbol; determining a cyclic shift parameter corresponding to each spatial flow; and obtaining a long training field LTF according to the first frequency domain sequence, the maximum quantity of spatial flows, and the cyclic shift parameter; and sending the LTF and indication information to each receive end, where the indication information includes a number of a spatial flow allocated to each receive end.