公开(公告)号：US11277865B2

公开(公告)日：2022-03-15

申请号：US15882439

申请日：2018-01-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin Zhang ,  Lei Huang ,  Yingpei Lin ,  Yan Xin

IPC: H04W74/08 ,  H04B7/08 ,  H04W16/14 ,  H04W16/28

Abstract: A method and system for LBT or CCA threshold setting for directional reception and transmission are provided. In an embodiment, a method in a wireless device for determining if a channel is clear in an unlicensed band channel in a wireless network includes detecting, with the wireless device, an energy along a first beamforming direction. The method also includes determining, with the wireless device, an energy detection threshold. The method also includes determining, with the wireless device, whether the unlicensed band channel is clear in at least the first receiving direction according to the energy and the energy detection threshold.

公开(公告)号：US11252717B2

公开(公告)日：2022-02-15

申请号：US15691312

申请日：2017-08-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Toufiqul Islam ,  Jianglei Ma ,  Kelvin Kar Kin Au ,  Jiayin Zhang ,  Mohamed Adel Salem

IPC: H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04L27/26 ,  H04W72/12 ,  H04L5/14 ,  H04L1/00 ,  H04W88/02 ,  H04W88/08

Abstract: Some user equipments (UEs) served by a base station may need to receive data from the base station and/or transmit data to the base station with lower latency than other UEs. It is desired to accommodate the presence of both low latency and latency tolerant communications in shared time-frequency resources to try to improve resource utilization. Embodiments are disclosed in which low latency and latency tolerant communications coexist in the same time-frequency resources. In some embodiments, a latency tolerant transmission is postponed to free resources to send a low latency transmission.

公开(公告)号：US11178659B2

公开(公告)日：2021-11-16

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 ,  H04B7/06 ,  H04W84/12 ,  H04W88/08

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：US11102817B2

公开(公告)日：2021-08-24

申请号：US16534931

申请日：2019-08-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin Zhang ,  Mohamed Adel Salem

IPC: H04W74/08 ,  H04W72/12 ,  H04W72/04 ,  H04W74/00 ,  H04L27/00

Abstract: A computer implemented method for operating an access node includes: generating, by the access node, an initial block and a time-dependent signal for transmission in a channel occupancy time (COT) of a shared communications channel, the initial block including a time-independent initial sequence that enables the initial block to be transmitted over any slot in the COT, wherein the time-dependent signal is transmitted after the initial block; and transmitting, by the access node, the initial block and the time-dependent signal in a first slot of the COT. An access node is also described.

公开(公告)号：US11071136B2

公开(公告)日：2021-07-20

申请号：US15640404

申请日：2017-06-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Toufiqul Islam ,  Peng Zhang ,  Jiayin Zhang

IPC: H04W72/14 ,  H04L5/00 ,  H04W72/12 ,  H04W76/27 ,  H04W72/04 ,  H04W88/02 ,  H04W88/08

Abstract: A system and method for multiplexing traffic. A wireless device such as a base station may schedule a first transmission of first data (e.g., latency tolerant data) to a first UE on first resources, and transmit second data (e.g., low latency data) to a second UE on a portion of the first resources. The base station may signal a first indicator e.g. via Radio Resource Control (RRC) signaling to the first UE indicating that the first UE is to monitor for a second indicator that itself indicates the presence of second data on the first resources. The base station may then signal a second indicator to the first UE to indicate the presence of the second data on the first resources. By using the first indicator to initiate the monitoring of the second indicator, the first UE can reduce the amount of monitoring it needs to perform if there is no second data traffic in a certain period of time or in a certain frequency band.

公开(公告)号：US10827527B2

公开(公告)日：2020-11-03

申请号：US16124876

申请日：2018-09-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yalin Liu ,  Jun Zhu ,  Jiayin Zhang ,  Tianyu Wu

IPC: H04W72/04 ,  H04W74/08 ,  H04W72/12 ,  H04W88/02

Abstract: Embodiments provide a channel contention method and apparatus. The channel contention apparatus belongs to a basic service set (BSS). The BSS includes an access point (AP) and at least one first station (STA). Both the AP and the at least one first STA participate in channel contention. The apparatus is the AP or any first STA. The apparatus includes a sensing module configured to sense a channel. The apparatus also includes a contention module configured to contend for the channel. The AP centrally performs control and scheduling so that all of at least one network device in the BSS can transmit data using the channel.

公开(公告)号：US20200314809A1

公开(公告)日：2020-10-01

申请号：US16901807

申请日：2020-06-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin Zhang ,  Liqing Zhang

IPC: H04W72/04 ,  H04W72/12

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：US20200287764A1

公开(公告)日：2020-09-10

申请号：US16819516

申请日：2020-03-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiayin Zhang ,  Jun Zhu ,  Yalin Liu ,  Yingpei Lin

IPC: H04L27/26 ,  H04L29/06 ,  H04L5/00

Abstract: A method includes generating a preamble for a protocol version of a wireless local area network, where the preamble includes a legacy signal L-SIG field and a high efficiency signal HE-SIG field that are arranged in order, the HE-SIG field includes a first orthogonal frequency division multiplexing OFDM symbol and a second OFDM symbol that are arranged in order, and an input information bit of the first OFDM symbol is the same as that of the second OFDM symbol, and sending the preamble to a receive end device, so that the receive end device restores the preamble, and when determining that input information bits obtained after restoring the first OFDM symbol and the second OFDM symbol are the same, determines that the preamble is the preamble of the protocol version.

公开(公告)号：US10708029B2

公开(公告)日：2020-07-07

申请号：US16055850

申请日：2018-08-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunbo Li ,  Yanchun Li ,  Le Liu ,  Jiayin Zhang ,  Ming Gan

IPC: H04L5/00 ,  H04L27/26 ,  H04W24/02 ,  H04W72/04 ,  H04W84/12 ,  H04W48/12 ,  H04B7/0452

Abstract: The present invention discloses a method and an apparatus for indicating a channel in a wireless local area network WLAN. A sending station generates and sends a physical protocol data unit PPDU, the PPDU includes a preamble field and a data field, a high efficiency signal field HE-SIG-A of the preamble field includes a bandwidth identifier and a channel bonding identifier, and the channel bonding identifier is used to indicate whether a data transmission channel is continuous in a frequency domain. In the foregoing manner, a discontinuous channel in a frequency domain in a wireless local area network is indicated, an available channel for data transmission is improved, and a system throughput is increased.

公开(公告)号：US10686478B2

公开(公告)日：2020-06-16

申请号：US16456469

申请日：2019-06-28

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04B1/12 ,  H04L27/26 ,  H04L5/00

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.