公开(公告)号：US20210099259A1

公开(公告)日：2021-04-01

申请号：US17121145

申请日：2020-12-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mohamed Adel Salem ,  Jiayin Zhang

IPC: H04L1/18 ,  H04W74/08 ,  H04W72/04 ,  H04W16/14

Abstract: Wireless communication between a user equipment (UE) and a base station may occur on unlicensed spectrum. When wirelessly communicating on unlicensed spectrum, there is an expectation that there maybe interference from others devices also transmitting on the same resources in the unlicensed spectrum. Systems and methods are therefore disclosed that aim to facilitate wireless communication in unlicensed spectrum. In some embodiments, systems and method are disclosed that are primarily directed to the uplink transmission of hybrid automatic repeat request (HARQ) feedback corresponding to a downlink data transmission, and the downlink data transmission and the HARQ feedback are both sent on unlicensed spectrum.

公开(公告)号：US10827531B2

公开(公告)日：2020-11-03

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 ,  H04W74/00 ,  H04W76/11 ,  H04W8/00 ,  H04W48/04 ,  H04W72/04

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：US10819478B2

公开(公告)日：2020-10-27

申请号：US16028884

申请日：2018-07-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun Zhu ,  Jiayin Zhang ,  Jiyong Pang ,  Le Liu

IPC: H04W4/00 ,  H04L5/00 ,  H04L27/26 ,  H04W52/28 ,  H04L25/02 ,  H04W84/12

Abstract: Embodiments of the present invention provide an extended range SU mode PPDU transmission method and apparatus. The method comprises: generating an extended range SU mode PPDU, wherein a legacy preamble part in the extended range SU mode PPDU is transmitted by using a bandwidth of 20 MHz, a data part in the extended range SU mode PPDU is transmitted by using a narrowband, and a bandwidth in the narrowband transmission comprises at least one of the following parameters: a 26-tone RU, a 52-tone RU, a 106-tone RU, or a 242-tone RU; and sending the extended range SU mode PPDU. By applying the method and the apparatus in the embodiments of the present invention, transmission reliability of the data part is improved, performance of parts in the PPDU in an EXT SU mode is more balanced, and a coverage area of long-distance transmission is ensured.

公开(公告)号：US10791569B2

公开(公告)日：2020-09-29

申请号：US16518641

申请日：2019-07-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mohamed Adel Salem ,  Jiayin Zhang

IPC: H04W72/12 ,  H04W74/00 ,  H04W16/14 ,  H04W74/08 ,  H04W72/04

Abstract: Methods and devices for grant-free uplink transmission in unlicensed spectrum are provided. A base station (BS) transmits grant-free resource configuration information to one or more electronic devices (EDs). The grant-free resource configuration information is used to configure the ED for GF uplink transmission in unlicensed spectrum. The GF resource configuration information includes GF ED group-specific resource configuration information indicating GF ED group-specific time-frequency (T/F) resources of the unlicensed spectrum for GF uplink transmission. The ED(s) transmit grant-free uplink transmissions over the unlicensed spectrum in accordance with the GF resource configuration information.

公开(公告)号：US20200288450A1

公开(公告)日：2020-09-10

申请号：US16847558

申请日：2020-04-13

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Jun Luo ,  Jiayin Zhang ,  Jiyong Pang

IPC: H04W72/04 ,  H04L5/00

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：US20200274567A1

公开(公告)日：2020-08-27

申请号：US16872912

申请日：2020-05-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jung Hoon Suh ,  Jiayin Zhang ,  Osama Aboul-Magd

IPC: H04B1/12 ,  H04L27/26

Abstract: An OFDMA subframe carrying different data fields in different time segments may include a separate short training field (STF), and a separate set of long training fields (LTFs), for each of the data fields to accommodate time-reuse scheduling. Communicating a separate STF for each data field may allow receivers to re-adjust automatic gain control (AGC) when the data fields carry different numbers of space-time-streams. Likewise, communicating separate sets of LTFs for each data field may allow different beamforming parameters to be applied to different data fields.

公开(公告)号：US10687313B2

公开(公告)日：2020-06-16

申请号：US15989902

申请日：2018-05-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin Zhang ,  Liqing Zhang

IPC: H04W72/04 ,  H04W72/12 ,  H04W72/14 ,  H04W72/08 ,  H04W74/08

Abstract: Methods and devices for grant-based uplink transmission in an unlicensed band are provided. Uplink grant messages are transmitted to electronic devices (EDs) in order to indicate time-frequency resources that are allocated to the EDs for uplink transmission in an unlicensed spectrum band. For a given ED, in the event that a first listen-before-talk (LBT) operation for the time-frequency resource allocated to the ED fails, the ED performs a second LBT operation within the allocated time-frequency resource at a start time based on a start point configuration within the allocated time-frequency resource. If the second LBT operation succeeds, the ED transmits an uplink transmission within a remaining portion of the allocated time-frequency resource that includes an activation signal to indicate a start of the uplink transmission, and uplink payload data.

公开(公告)号：US10548156B2

公开(公告)日：2020-01-28

申请号：US15387265

申请日：2016-12-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jun Luo ,  Yingpei Lin ,  Jiayin Zhang ,  Xun Yang

IPC: H04W72/12 ,  H04W72/04 ,  H04L27/26 ,  H04W84/12

Abstract: A resource indication processing method, which is applied to a wireless local area network that uses an OFDMA technology, where the method includes sending or receiving a frame including a resource indication field, where the resource indication field includes an identifier of a user, and resource block information and modulation and coding scheme MCS information that are corresponding to the identifier of the user.

公开(公告)号：US10299200B2

公开(公告)日：2019-05-21

申请号：US15174752

申请日：2016-06-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yingpei Lin ,  Jiayin Zhang ,  Xun Yang

IPC: H04W48/20 ,  H04W40/24 ,  H04W84/12 ,  H04B17/318 ,  H04L5/00 ,  H04W24/02 ,  H04W72/12 ,  H04W74/08 ,  H04W88/02 ,  H04W88/08

Abstract: Embodiments provide a method for accessing an access point by a station device, a device, and a system. A station device selects a master access point from multiple access points according to channel quality and accesses the master access point, and sends information about remaining access points to the master access point, so that the master access point selects a slave access point according to the information about the remaining access points. In this way, the master access point coordinates with the slave access point to perform data transmission with the station device.

公开(公告)号：US10264599B2

公开(公告)日：2019-04-16

申请号：US15249795

申请日：2016-08-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiayin Zhang ,  Jun Zhu ,  Yingpei Lin ,  Xun Yang

IPC: H04W4/00 ,  H04W72/12 ,  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.