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公开(公告)号：EP3249839A1
公开(公告)日：2017-11-29
申请号：EP15878357.1
申请日：2015-01-20
申请人： Huawei Technologies Co. Ltd. , Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： WANG, Lei , KURRAS, Martin , THIELE, Lars , HAUSTEIN, Thomas , CHEN, Dageng , WU, Ye , QIAO, Deli
CPC分类号： H04L5/005 , H04B7/0482 , H04B7/0639 , H04L1/06 , H04L5/0023 , H04L5/0051 , H04L27/261 , H04W24/10
摘要： Embodiments of the present invention provide a precoding information obtaining method and a device. The method includes: separately precoding, by a network device by using N sub-codebooks, a pilot group including K pilots to obtain N precoded pilot groups, where the sub-codebooks are subsets of a precoding codebook, the precoding codebook includes M precoding vectors, each sub-codebook includes K precoding vectors; sending, by the network device, a precoded pilot group to a terminal device in each of W RB groups; and receiving, by the network device, precoding information fed back by the terminal device for any one of W precoded pilot groups. According to the precoding information obtaining method and the device, the network device divides a precoding codebook into multiple sub-codebooks, and a quantity of precoding vectors in each sub-codebook is relatively small. Therefore, a quantity of pilot signals sent by the network device in each RB group is reduced, and pilot overheads in each RB group are reduced.
摘要翻译： 本发明实施例提供了一种预编码信息获取方法和装置。 该方法包括：网络设备使用N个子码本对包含K个导频的导频组进行单独预编码以获得N个预编码导频组，其中，所述子码本为预编码码本的子集，所述预编码码本包括M个预编码矢量 ，每个子码本包括K个预编码向量; 所述网络设备将预编码的导频组发送给每个W RB组中的终端设备; 所述网络设备接收所述终端设备反馈的W个预编码导频组中的任意一个的预编码信息。 根据预编码信息获取方法和设备，网络设备将预编码码本划分为多个子码本，每个子码本的预编码向量数量较小。 因此减少了每个RB组中的网络设备发送的导频信号的数量，减少了每个RB组中的导频开销。
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公开(公告)号：EP3249839B1
公开(公告)日：2019-12-18
申请号：EP15878357.1
申请日：2015-01-20
申请人： Huawei Technologies Co. Ltd. , Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： WANG, Lei , KURRAS, Martin , THIELE, Lars , HAUSTEIN, Thomas , CHEN, Dageng , WU, Ye , QIAO, Deli
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公开(公告)号：EP4383749A1
公开(公告)日：2024-06-12
申请号：EP22874908.1
申请日：2022-09-27
发明人： WANG, Lei , XU, Chao , QIN, Renxuan , ZHANG, Tienan
IPC分类号： H04R1/10
摘要： This application provides a sound output apparatus. The sound output apparatus includes a housing, a first speaker, and a second speaker. A sound outlet and a first air vent that are spaced are disposed on the housing. A first channel and a second channel that are separated are disposed on the housing. A rear cavity of the first speaker communicates with the outside of an earphone through the first channel and the first air vent of the housing. The second speaker is located on a side that is of the first speaker and that is away from the sound outlet. A front cavity of the second speaker communicates with the outside of the earphone through the second channel and the sound outlet of the housing. In this way, the rear cavity of the first speaker may be separated from the front cavity of the second speaker, and a sound wave in the rear cavity of the first speaker does not easily interfere with a sound wave in the front cavity of the second speaker. This improves sound quality of the second speaker. In addition, the rear cavity of the first speaker has an independent channel that communicates with the outside of the earphone, so that low-frequency performance of the first speaker is improved.
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公开(公告)号：EP4375150A1
公开(公告)日：2024-05-29
申请号：EP21952206.7
申请日：2021-08-03
发明人： WANG, Lei , YANG, Weimiao , ZHANG, Yongsheng , LU, Yuhao
摘要： Embodiments of this application provide a brake system and a control method. The brake system provided in embodiments of this application is applicable to an intelligent vehicle, a new energy vehicle, and the like. The brake control system includes: a master cylinder (1), a booster (2), at least one first control valve (11 and 12), at least one second control valve (21, 22, 23, and 24), at least one third control valve (31, 32, 33, and 34), at least one first interface (4), a first control unit (91), and a second control unit (92). The brake system provided in embodiments of this application has a plurality of redundancy designs, to ensure that the brake system can still meet a plurality of brake function requirements of a vehicle when a controller or a key solenoid valve fails, so as to improve security of the brake system, ensure a pedal feeling of a driver, and bring more stable and comfortable driving experience to the driver.
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公开(公告)号：EP4366175A1
公开(公告)日：2024-05-08
申请号：EP22845071.4
申请日：2022-06-22
发明人： WEI, Fan , WANG, Lei , XU, Xiuqiang
IPC分类号： H04B1/713
摘要： Embodiments of this application provide a data transmission method and apparatus, to resolve a multiple access interference problem in a multi-user communication system. A first terminal device performs data transmission in one frequency hopping cycle based on a frequency corresponding to an element in a first sequence, where the one frequency hopping cycle includes M frequency hopping moments, a frequency corresponding to the first terminal device at a first frequency hopping moment is a frequency corresponding to a first element, a frequency corresponding to the first terminal device at an ith frequency hopping moment is a frequency corresponding to an element obtained by cyclically moving from the first element leftward (or rightward) for i-1 times according to a specified rule, i is a positive integer from 2 to M, and M is a positive integer greater than or equal to 2. In this way, the first terminal device may have a plurality of frequency hopping moments in the one frequency hopping cycle, and may have a plurality of optional frequency hopping frequencies in frequency domain, thereby resolving the multiple access interference problem in the multi-user communication system.
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公开(公告)号：EP4340237A1
公开(公告)日：2024-03-20
申请号：EP21944561.6
申请日：2021-06-09
发明人： YU, Rui , CHEN, Xuesong , LIU, Supeng , WANG, Lei , YU, Zhan , YEO, Theng Tee
摘要： Embodiments of this application relate to the field of communication technologies, and provide a near-field communication chip, a phase synchronization method, and an electronic device, to quickly synchronize a transmitted signal of an NFC card device with a carrier of an NFC card reader. The near-field communication chip includes: a processing circuit, configured to determine a first carrier frequency offset between a local clock signal and a carrier clock signal, and generate a first frequency control word based on the first carrier frequency offset, where the carrier clock signal is determined based on a received signal received by the near-field communication chip; a phase-locked loop, configured to generate a first clock signal based on the local clock signal and the first frequency control word; and a phase alignment circuit, configured to perform phase selection on the first clock signal based on the carrier clock signal to obtain a second clock signal, and send the second clock signal to a transmitter circuit.
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公开(公告)号：EP4215411A1
公开(公告)日：2023-07-26
申请号：EP21870832.9
申请日：2021-05-26
发明人： HU, Haomang , ZHANG, Xiaobing , YE, Wen , LIANG, Yuanyuan , WANG, Lei
IPC分类号： B60L58/26 , H01M10/663 , B60K1/00 , H01M10/615 , H01M10/6568 , B60H1/00 , H01M10/613 , H01M10/6556 , B60L58/27 , H01M10/625 , H01M10/6563
摘要： This application discloses a thermal management system and an electric vehicle. The thermal management system includes a compressor, a water-cooled condenser, a battery chiller, a valve body assembly, a first water pump, a second water pump, and a third water pump that are disposed in a centralized manner. This disposition manner makes various components be installed more compactly, and makes pipeline routes between the components as short as possible. This not only helps reduce space occupied by the thermal management system, but also can reduce a pressure loss of liquid when the liquid circulates along a pipeline, and improve refrigeration efficiency or heating efficiency of the thermal management system. In addition, the thermal management system can separately form a passenger compartment cooling loop, a passenger compartment heating loop, a battery cooling loop, a battery heating loop, and an electrical driver cooling loop, and any one or more of the passenger compartment, the battery, and the electrical driver can be cooled or heated. This helps control temperatures at all positions in the electric vehicle flexibly.
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公开(公告)号：EP4195639A1
公开(公告)日：2023-06-14
申请号：EP21865762.5
申请日：2021-08-09
发明人： WANG, Yilun , LIU, Min , ZHANG, Li , DING, Ning , BIAN, Sucheng , DU, Zhong , LI, Li , WANG, Lei , WANG, Long , FANG, Weiqing , YANG, Junfeng , GE, Feng
摘要： This application provides a service sharing method and system, and an electronic device, and relates to a terminal field. An electronic device may quickly share, with a contact, a service provided by another electronic device. The method includes: A first device may display a chat interface with a first contact, where the chat interface includes an input box for a chat message. If it is detected that a user inputs a preset symbol into the input box, the first device displays a first device list, where the first device list includes one or more electronic devices associated with the first device. If it is detected that the user selects a second device from the first device list, the first device displays a service list provided by the second device, where the service list includes one or more services provided by the second device. If it is detected that the user selects a first service from the service list, the first device sends a first chat message in the chat interface, where the first chat message includes first service content corresponding to the first service selected by the user.
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公开(公告)号：EP4192055A1
公开(公告)日：2023-06-07
申请号：EP21855499.6
申请日：2021-08-09
发明人： WANG, Lei , ZHANG, Lei
IPC分类号： H04W4/70
摘要： Embodiments of this application provide a data transmission method and an apparatus. The method at a transmit end includes: obtaining a first sequence and a common sequence group, where a quantity of sequences in the common sequence group is N; the first sequence includes K first sub-sequences, lengths of the K first sub-sequences are sequentially B 1 , B 2 , ..., B K , K is a positive integer, B 1 = log 2 N, and the length B 1 of a 1 st first sub-sequence is greater than or equal to a length of another first sub-sequence; separately mapping the K first sub-sequences into K second sub-sequences based on the common sequence group, and outputting a second sequence including the K second sub-sequences. The method at a receive end includes: receiving a second sequence, where the second sequence includes K second sub-sequences; separately mapping the K second sub-sequences into K first sub-sequences based on a common sequence group; and determining a first sequence based on the K first sub-sequences. According to the foregoing method, data transmission accuracy in a scenario in which a large quantity of users transmit small packets is improved.
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公开(公告)号：EP4027328A1
公开(公告)日：2022-07-13
申请号：EP20876248.4
申请日：2020-08-21
发明人： WANG, Lei , PAN, Liangyu , YAN, Yuan , LI, Haiyan , PANG, Yongqiang , LIU, Yang
IPC分类号： G09G3/36
摘要： A display module and a display apparatus are provided. The display module includes a polygonal display region (1) and a plurality of non-display portions (21). The non-display portions (21) are connected to side edges of the display region (1) in a one-to-one correspondence. At least two of the non-display portions (21) are bent to a back side of the display region (1). When the non-display portions (21) bent to the back side of the display region (1) include adjacent non-display portions (21), there may be an opening (7) between two adjacent non-display portions (21). In this solution, it is convenient to reduce pulling force between the adjacent non-display portions (21), and stress concentration may be reduced after the adjacent non-display portions (21) are bent to the back side of the display region (1). Specifically, the non-display portion (21) is provided with a signal line (22), and signal lines (22) of the adjacent non-display portions (21) are electrically connected by using a connecting line (11). The connecting line (11) is used to connect the signal lines (22) of the adjacent non-display portions (21). In this solution, the connecting line (11) is disposed on the back side of the display region (1), so that the signal lines (22) of the adjacent non-display portions (21) can be electrically connected, to control the display module to display a picture.
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