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公开(公告)号：US10813170B2
公开(公告)日：2020-10-20
申请号：US16440586
申请日：2019-06-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jiantao Xue , Kailong Wang , Anjian Li , Yuan Gao
Abstract: A network device for locating performing following operations: determining a base station set and an auxiliary UE set that participate in locating of to-be-located target UE; receiving from the to-be-located target UE, a first RSTD set of positioning reference signals PRSs sent by any two base stations in the base station set to the to-be-located target UE, and a second RSTD set of a PRS sent by any auxiliary UE in the auxiliary UE set to the to-be-located target UE and a PRS sent by a reference base station in the base station set to the to-be-located target UE; and determining location information of the plurality of to-be-located UEs based on the first RSTD set, the second RSTD set, and location information of base stations included in the base station set. Locating accuracy and flexibility can be improved.
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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：US10404516B2
公开(公告)日：2019-09-03
申请号：US16015964
申请日：2018-06-22
Applicant: Huawei Technologies Co., Ltd.
Abstract: A data demodulation method, apparatus, and system are presented. The method includes obtaining notification information indicating that user equipment (UE) is in a high-speed moving state; performing time-frequency synchronization processing on first downlink data according to the notification information to obtain second downlink data; and performing demodulation processing on the second downlink data to obtain third downlink data, where in the demodulation processing, inter-transmission time intervals (TTIs) filtering for a channel estimation is not performed, or a filtering coefficient as a weight of a current TTI for a channel estimation is greater than a filtering coefficient as a weight of a TTI that is at the time when the UE is in the non-high-speed moving state for a channel estimation. The demodulation method is applicable to a high-speed scenario for improving a downlink data throughput of the UE.
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公开(公告)号：US10390325B2
公开(公告)日：2019-08-20
申请号：US15636468
申请日：2017-06-28
Applicant: Huawei Technologies Co., Ltd.
Abstract: Embodiments of the present disclosure relate to the field of communications technologies, and disclose a positioning method and device, so as to resolve a prior-art problem of relatively low positioning precision caused by a relatively long message transmission delay. A specific solution is as follows: A positioning controller: sends, to a user device, a message that carries positioning auxiliary information including an identifier of a first base station and an identifier of at least one second base station; receives a message that carries a positioning measurement result; obtains location information of the first base station and location information of the at least one second base station; and determines location information of the user device according to the positioning measurement result, the location information of the first base station, and the location information of the at least one second base station.
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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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Patent Agency Ranking
公开(公告)号：US10299240B2
公开(公告)日：2019-05-21
申请号：US15677819
申请日：2017-08-15
Applicant: Huawei Technologies Co., Ltd.
Abstract: The present invention provides a positioning parameter coordination apparatus, system, and method. A single positioning controller (SPC) receives a positioning request message sent by a positioning request device, obtains capability information of a user equipment (UE) according to an identifier of the UE, and determines at least one first access network device to complete positioning configuration. The SPC positions the UE according to a positioning parameter of the UE.
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27.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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公开(公告)号：US10251135B2
公开(公告)日：2019-04-02
申请号：US15346196
申请日：2016-11-08
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: H04W52/04 , H04W52/24 , H04W52/36 , H04L5/00 , H04W52/14 , H04W52/28 , H04W76/15 , H04W52/26 , H04W52/34 , H04W76/02
Abstract: Embodiments of the present invention provide a method for controlling power of a carrier signal, user equipment, and a base station. The method includes: receiving, by user equipment, power control parameters, sent by at least one base station, of at least two carrier signals, where the at least two carrier signals are signals sent on at least two aggregation carriers; determining, by the user equipment according to the power control parameters, channel gain reference quantities corresponding to the at least two carrier signals, where the channel gain reference quantities are used to represent a magnitude of a channel gain; and controlling, by the user equipment, power of the at least two carrier signals according to the channel gain reference quantities. According to the technical solutions of the present invention, a power resource of user equipment can be effectively utilized, and network performance can be improved.
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公开(公告)号：US20180176905A1
公开(公告)日：2018-06-21
申请号：US15894875
申请日：2018-02-12
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: H04W72/0413 , H04W52/14 , H04W52/36 , H04W56/0015 , H04W56/0045 , H04W56/0055 , H04W72/044 , H04W72/085 , H04W88/06 , H04W88/08
Abstract: Embodiments of the present invention provide a communication method, a communications apparatus, and a base station, and relate to the communications field. The method includes: obtaining, by a terminal, a timing advance TA offset of a first cell set, and determining, by the terminal, a TA difference between the first cell set and each cell set of a second base station according to the TA offset of the first cell set after a TA of the first cell set is adjusted. The first cell set includes at least one cell, and the at least one cell is a cell of a first base station and has a TA needs to be adjusted;
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公开(公告)号：US09949182B2
公开(公告)日：2018-04-17
申请号：US14249699
申请日：2014-04-10
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
CPC classification number: H04W36/0083 , H04W36/0061 , H04W48/10 , H04W48/12 , H04W48/20 , H04W84/045 , Y02D70/00 , Y02D70/1222 , Y02D70/1224 , Y02D70/1262 , Y02D70/24
Abstract: Embodiments of the present invention provide a cell reselection method, device, and system, where the method includes: receiving a broadcast message sent in a first cell by a base station, where the broadcast message includes information about a set of second cells; when it is determined, according to the information about the set of the second cells, that a target reselection cell is a second cell, determining, according to second-cell reselection parameter information, time for performing cell reselection; or when it is determined, according to the information about the set of the second cells, that a target reselection cell is not a second cell, determining, according to first-cell reselection parameter information, time for performing cell reselection.
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