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公开(公告)号：US20200229131A1
公开(公告)日：2020-07-16
申请号：US16832579
申请日：2020-03-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Chenwan Li , Bo Lin , Jiantao Xue
Abstract: This application relates to the field of positioning technologies, and specifically to a data transmission method, a server, and a base station. The method includes: receiving, by a base station, a first message sent by a server, where the first message carries a first data packet including positioning assistance data; and broadcasting, by the base station, the first data packet in the first message to a terminal.
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公开(公告)号：US10684351B2
公开(公告)日：2020-06-16
申请号：US16022495
申请日：2018-06-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jiantao Xue , Anjian Li , Bin Su
Abstract: Embodiments of the present invention provide a terminal device and a positioning system, and relate to the field of communications technologies. The terminal device is configured to: obtain identifiers of at least two antenna elements and attribute information of a reference signal corresponding to each of the at least two antenna elements; receive at least two reference signals based on the attribute information, where the at least two reference signals are sent by corresponding antenna elements of the at least two antenna elements, respectively; obtain positioning information; and send, to the network device, the positioning information and identification information of antenna elements corresponding to the positioning information. Positioning signals obtained by different antenna elements are different, so that the terminal device can identify which antenna element a received positioning signal comes from. Therefore, an improved distributed antenna system can implement terminal device positioning, and improve indoor positioning accuracy.
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公开(公告)号：US10306585B2
公开(公告)日：2019-05-28
申请号：US15952840
申请日：2018-04-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jiantao Xue , Yijie Li , Jie Cui , Anjian Li
Abstract: The present invention provides a signal determining method and an apparatus, so as to resolve a problem, in a conventional positioning method, that a signal receiving device cannot accurately determine whether a received signal is an aggregated reference signal, and consequently, positioning fails due to a relatively large error of location information obtained by means of positioning. The method is as follows: A signal receiving device may estimate, according to a TAE between at least two subcarriers used by a signal sending device to transmit a reference signal and a reference signal sent by the signal sending device on each subcarrier, an aggregated reference signal that is sent by the signal sending device and that is obtained after carrier aggregation. After receiving a signal, the signal receiving device determines whether the signal is an aggregated reference signal sent by the signal sending device.
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24.发明授权公开(公告)号：US10281560B2
公开(公告)日：2019-05-07
申请号：US16022505
申请日：2018-06-28
Applicant: Huawei Technologies Co., Ltd.
Abstract: Embodiments of the present disclosure provide a positioning method based on a time difference of arrival, user equipment, and a network device. The method includes: calculating, by user equipment, a first time difference of arrival RSTD1 based on positioning signals sent by a first base station and a second base station at a same moment; calculating a second time difference of arrival RSTD2 based on known location information of the user equipment; calculating a time alignment error TAE based on the RSTD1 and the RSTD2; and performing, based on the TAE, positioning based on a time difference of arrival TDOA. According to this method, the TAE caused by the base stations is subtracted during positioning calculation. In other words, the time alignment error caused by the base stations is eliminated. Therefore, accuracy of TDOA-based positioning can be ensured.
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