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公开(公告)号：US20200304268A1
公开(公告)日：2020-09-24
申请号：US16897002
申请日：2020-06-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yunbo LI , Yanchun LI , Le LIU , Jiayin ZHANG , Ming GAN
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.
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公开(公告)号：US20190182770A1
公开(公告)日：2019-06-13
申请号：US16279098
申请日：2019-02-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yanchun LI
Abstract: Embodiments of this application disclose a data transmission method and apparatus, and the method includes receiving, by a receive end by using secondary radio, a feature narrowband signal sent by a transmit end, enabling, by the receive end, primary radio based on the feature narrowband signal, where a receiving bandwidth of the secondary radio is less than a receiving bandwidth and a sending bandwidth of the primary radio, and sending, by the receive end, a first broadband signal to the transmit end by using the primary radio, where the first broadband signal is used to notify the transmit end that the receive end has enabled the primary radio. According to the data transmission method in the embodiments of this application, the transmit end may determine, by using feedback (for example, the first broadband signal) from the receive end, that the receive end has enabled the primary radio.
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公开(公告)号：US20180084605A1
公开(公告)日：2018-03-22
申请号：US15822815
申请日：2017-11-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yunbo LI , Yanchun LI , Yi LUO
IPC: H04W84/12
CPC classification number: H04W84/12 , H04J2011/0016 , H04W74/0858
Abstract: The present application provides a channel access process method in a wireless local area network. The method includes: generating, by a station, a backoff counter value; then performing, by the station, a backoff operation after receiving a first trigger frame, where the backoff operation includes: deducting, from the backoff counter value, a quantity N of subchannels for random access, to obtain a new backoff counter value; and when the new backoff counter value is 0 or a negative number, randomly selecting, by the station, one subchannel from the subchannels for random access, and then accessing the subchannel to send an uplink frame. The present application further provides a corresponding channel access apparatus. Applying the method and the apparatus of the embodiments of the present application improves system access efficiency and avoids a waste of system resources.
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公开(公告)号：US20210204270A1
公开(公告)日：2021-07-01
申请号：US17204071
申请日：2021-03-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yanchun LI , Mingjie DONG
Abstract: This application provides beam training methods and apparatuses. One method includes: sending, by an access point (AP), training configuration information to a plurality of stations, wherein the training configuration information comprises a first antenna configuration indicating a plurality of first uplink beams corresponding to the plurality of stations; receiving, by the AP, a plurality of training frame sent by each of the plurality of stations by using a corresponding second uplink beam; and determining, by the AP based on the plurality of training frames sent by the plurality of stations, a plurality of third uplink beams for the plurality of stations to send uplink data.
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公开(公告)号：US20200260375A1
公开(公告)日：2020-08-13
申请号：US16862434
申请日：2020-04-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yanchun LI , Zhou LAN , Yunbo LI
Abstract: This application provides a data transmission method. When performing data transmission with a first station in a bandwidth power saving mode by using an operating channel of the first station, an access point performs data transmission with a second station by using an operating channel of the second station. Therefore, even if the operating channel of the first station includes a primary channel, the access point can still perform data transmission with the second station by using another channel. Further, for the access point, although the operating channel of the first station occupies only a part of available bandwidth resources of the access point, the access point can still perform data transmission with the second station by using a remaining channel.
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Patent Agency Ranking
公开(公告)号：US20190387542A1
公开(公告)日：2019-12-19
申请号：US16453596
申请日：2019-06-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yunbo LI , Zhou LAN , Yanchun LI
IPC: H04W74/08
Abstract: Embodiments of the present application disclose a multichannel access method, including: obtaining a transmission opportunity TXOP of a first reserved channel; sensing a non-reserved channel other than the first reserved channel in a preset time segment in the TXOP, and if the non-reserved channel is in an idle state, using the non-reserved channel as a second reserved channel; and when an ending moment of the preset time segment is reached, sending a current data frame on the first reserved channel and the second reserved channel. Correspondingly, the embodiments of the present application further disclose a multichannel access apparatus. Channel utilization can be improved by implementing the embodiments of the present application.
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公开(公告)号：US20190230709A1
公开(公告)日：2019-07-25
申请号：US16371787
申请日：2019-04-01
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yanchun LI , Yuchen GUO , Yunbo LI , Xun YANG
Abstract: Embodiments of the present invention provide an access method, including: sending, to an access point, a first frame that carries uplink transmission requirement information; and if a second frame that carries information about an uplink transmission resource is received from the access point within agreed time period, sending uplink multi-user transmission data to the access point, where the uplink multi-user transmission data is transmitted on the uplink transmission resource; or if the second frame is not received within an agreed time period, accessing, by a station, a channel in a contention access manner that is based on carrier sense CSMA/CA. According to the method provided in the embodiments of the present invention, a channel access manner can be managed, a congestion degree of a system can be decreased, and channel utilization can be increased.
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公开(公告)号：US20190215851A1
公开(公告)日：2019-07-11
申请号：US16355528
申请日：2019-03-15
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yanchun LI , Yunbo LI
CPC classification number: H04W72/1268 , H04W72/042 , H04W72/0453 , H04W72/1289 , H04W72/14 , H04W84/12
Abstract: The present disclosure discloses a data transmission method, including: receiving, by a station (STA) on a first channel, a transmission indication sent by an access point (AP), where the transmission indication is used to indicate that a first frame is transmitted on a second channel, the transmission indication includes transmission information of the first frame, and the transmission information of the first frame includes at least one of a channel frequency, a channel bandwidth, spatial stream information, or a transmission time; and listening, by the STA, on the second channel according to the transmission indication, to receive the first frame sent by the AP. An embodiment of the present disclosure further provides a related device. Using embodiments of the present disclosure can improve resource utilization.
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公开(公告)号：US20180310229A1
公开(公告)日：2018-10-25
申请号：US16022590
申请日：2018-06-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yanchun LI , Xiao HAN , Yunbo LI
CPC classification number: H04W48/10 , H04L5/003 , H04W48/16 , H04W72/0413 , H04W72/0446 , H04W84/12
Abstract: A method includes: broadcasting, by an AP, a first trigger frame to a STA within coverage of the AP, where the first trigger frame carries a preset condition, to request a STA that meets the preset condition to send an uplink access signal in a specified time after receiving the first trigger frame; receiving, by the AP, an uplink access signal sent by at least one STA, where the uplink access signal includes an identifier sequence; and when determining that an identifier sequence included in a received uplink access signal is the same as an identifier sequence included in a resource group allocated by the AP to a STA that sends the uplink access signal, determining, by the AP, that the STA that sends the uplink access signal meets the preset condition. Therefore, uplink resource use efficiency is effectively improved.
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公开(公告)号：US20250093146A1
公开(公告)日：2025-03-20
申请号：US18963188
申请日：2024-11-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ganghua YANG , Xu LI , Yanchun LI , Zhixiang FAN
Abstract: A method for monitoring a box-type object and a related apparatus are provided, for example, a monitoring device (200) or a container. The monitoring device (200) includes: a transmitting module (210), a receiving module (220), and a processing module (230). The transmitting module (210) and the receiving module (220) are located on a to-be-monitored box (130) and/or located in an area that is on a transport device of the box (130) and that is relatively static with the box (130); the transmitting module (210) is configured to transmit a test signal; the receiving module (220) is configured to receive the test signal; and the processing module (230) is configured to: determine a channel characteristic based on an electrical signal corresponding to the test signal, and determine, based on the channel characteristic and an initial channel characteristic, whether a state of the box (130) changes.
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