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公开(公告)号：US20190229760A1
公开(公告)日：2019-07-25
申请号：US16369336
申请日：2019-03-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yong JIANG , Jia Lv , Yuxiang Xiao
Abstract: A passive intermodulation elimination method, an apparatus, and a base station are disclosed. The method includes: receiving, by a network device, N pieces of backhauled information, where one piece of the backhauled information includes initial phase information of each carrier on one transmit channel, and N is an integer greater than or equal to 1; and eliminating, by the network device, a PIM of a received signal on a receive channel on the network device based on the N pieces of backhauled information.
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公开(公告)号：US10727896B2
公开(公告)日：2020-07-28
申请号：US16397628
申请日：2019-04-29
Applicant: Huawei Technologies Co., Ltd.
Abstract: A tower top device and a passive intermodulation cancellation method are provided. The tower top device is connected between an antenna and a radio remote unit (RRU) to perform passive intermodulation (PIM) cancellation. The tower top device includes: a model processing circuit configured to generate a cancellation signal based on an input digital transmit signal and a non-linear model, where the non-linear model is used to represent a non-linear relationship between a source signal generating PIM interference and a PIM interference signal; and a cancellation circuit connected to the model processing circuit and configured to: obtain the cancellation signal generated by the model processing circuit, and perform, based on the cancellation signal, PIM cancellation on a digital received signal including an actual PIM interference signal.
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公开(公告)号：US11870474B2
公开(公告)日：2024-01-09
申请号：US17884157
申请日：2022-08-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jia Lv , Haizheng Tang , Ling Guo
CPC classification number: H04B1/1081 , H04B1/0067 , H04B1/0078 , H04B1/1018 , H04B1/30 , H04B7/0837 , H04B7/12 , H03F3/20 , H03F2200/171
Abstract: Example access network devices are described. One example access network device includes a signal processing apparatus. The signal processing apparatus includes a first power amplifier, a second power amplifier, a first filter, a second filter, and a combiner. The first filter filters a second signal obtained by the first power amplifier, to obtain a first sub-signal belonging to a first frequency band and a second sub-signal belonging to a second frequency band. The second filter filters a fourth signal obtained by the second power amplifier, to obtain n sub-signals including at least a third sub-signal belonging to a third frequency band. The combiner combines the first sub-signal and i sub-signals in the n sub-signals based on a preset condition, to obtain a first combined signal. The communication module sends the first combined signal by using a first port, and sends the second sub-signal by using a second port.
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公开(公告)号：US11438020B2
公开(公告)日：2022-09-06
申请号：US17360287
申请日：2021-06-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jia Lv , Haizheng Tang , Ling Guo
Abstract: Example signal processing methods and apparatus are described. The signal processing apparatus includes a first power amplifier, a second power amplifier, a first filter, a second filter, and a combiner. The first filter filters a second signal obtained by the first power amplifier to obtain a first sub-signal belonging to a first frequency band and a second sub-signal belonging to a second frequency band. The second filter filters a fourth signal obtained by the second power amplifier to obtain n sub-signals including at least a third sub-signal belonging to a third frequency band. The combiner combines the first sub-signal and i sub-signals in the n sub-signals based on a preset condition to obtain a first combined signal. The communication module sends the first combined signal by using a first port, and sends the second sub-signal by using a second port.
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公开(公告)号：US11121734B2
公开(公告)日：2021-09-14
申请号：US16369336
申请日：2019-03-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yong Jiang , Jia Lv , Yuxiang Xiao
Abstract: A passive intermodulation elimination method, an apparatus, and a base station are disclosed. The method includes: receiving, by a network device, N pieces of backhauled information, where one piece of the backhauled information includes initial phase information of each carrier on one transmit channel, and N is an integer greater than or equal to 1; and eliminating, by the network device, a PIM of a received signal on a receive channel on the network device based on the N pieces of backhauled information.
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Patent Agency Ranking
公开(公告)号：US11109261B2
公开(公告)日：2021-08-31
申请号：US16698690
申请日：2019-11-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xiaolong Zhu , Jia Lv , Dongdong Ruan , Shuo Jin , Gang Cao
IPC: H04W28/02 , H04B17/327 , H04B17/336 , H04B7/0404 , H04L1/06 , H04L5/00
Abstract: An antenna port mapping method and a network device are disclosed. The method includes: determining, by a network device, a polarization direction of each of P physical antennas of the network device and an antenna array to which each of the P physical antennas belongs, where P is a multiple of 4; and respectively mapping, by the network device, a first antenna port and a second antenna port to a first group of physical antennas and a second group of physical antennas in the P physical antennas, and respectively mapping a third antenna port and a fourth antenna port to a third group of physical antennas and a fourth group of physical antennas in the P physical antennas.
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公开(公告)号：US20190253098A1
公开(公告)日：2019-08-15
申请号：US16397628
申请日：2019-04-29
Applicant: Huawei Technologies Co., Ltd.
IPC: H04B1/525 , H04B1/10 , H04B1/12 , H04B1/04 , H04B17/345
Abstract: A tower top device and a passive intermodulation cancellation method are provided. The tower top device is connected between an antenna and a radio remote unit (RRU) to perform passive intermodulation (PIM) cancellation. The tower top device includes: a model processing circuit configured to generate a cancellation signal based on an input digital transmit signal and a non-linear model, where the non-linear model is used to represent a non-linear relationship between a source signal generating PIM interference and a PIM interference signal; and a cancellation circuit connected to the model processing circuit and configured to: obtain the cancellation signal generated by the model processing circuit, and perform, based on the cancellation signal, PIM cancellation on a digital received signal including an actual PIM interference signal.
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公开(公告)号：US20250149806A1
公开(公告)日：2025-05-08
申请号：US19019238
申请日：2025-01-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Qiang Wang , Tao Pu , Jia Lv , Liang Li , Xiaojian Wang
Abstract: This application discloses an antenna system, including a plurality of antenna groups. Each antenna group includes two antenna array planes and one mounting panel. The two antenna array planes are symmetrically mounted on two planes of the mounting panel. Each antenna array plane includes at least one antenna element. The two antenna array planes in each antenna group work simultaneously. The antenna system includes a plurality of radiation areas, and each radiation area is formed by cooperative radiation of beams from a plurality of antenna array planes in different antenna groups. In this application, more antenna array planes can be deployed in the antenna system. Therefore, overall coverage of the antenna system is improved without additional wind resistance. In addition, each radiation area is formed by cooperative radiation of a plurality of antenna array planes. Therefore, a capacity and a gain of the antenna system are also improved.
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公开(公告)号：US20230291099A1
公开(公告)日：2023-09-14
申请号：US18319426
申请日：2023-05-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Tao Pu , Jia Lv , Jianping Li , Runxiao Zhang
CPC classification number: H01Q3/34 , H01Q3/02 , H01Q1/1228 , H01Q21/10
Abstract: This disclosure provides an antenna system to improve communication flexibility. The antenna system includes a radio frequency unit, a divider, a first modulator, a second modulator, a first antenna and a second antenna. The radio frequency unit is configured to generate a first radio frequency signal. The divider is configured to divide the first radio frequency signal into first and second radio frequency sub-signals. The first modulator is configured to adjust a first electrical downtilt of the first radio frequency sub-signal and send the adjusted first radio frequency sub-signal to the first antenna for transmission. The second modulator is configured to adjust a second electrical downtilt of the second radio frequency sub-signal and send the adjusted second readio frequency sub-sibnal to the second antenna for transmission. The adjustion is based on a target downtilt of the first radio frequency signal and a mechanical downtitlt of the first or second antenna.
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公开(公告)号：US20220286263A1
公开(公告)日：2022-09-08
申请号：US17752848
申请日：2022-05-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zhen Qin , Siwei Rao , Qiang Ye , Jia Lv , Guangjian Tian
Abstract: Signaling analysis methods and apparatus are provided to obtain a to-be-detected signaling flow that includes N pieces of signaling. First feature construction is performed on a message type and an information element that are included in each of the N pieces of signaling to obtain a first feature sequence. The first feature sequence includes N first feature vectors which are in a one-to-one correspondence with the N pieces of signaling. The first feature sequence is input to a first signaling anomaly detection model to perform anomaly detection processing. A first anomaly detection result is produced indicating that the to-be-detected signaling flow is normal or abnormal. In this way, an anomaly caused due to an information element error can be covered. The method and the apparatus can be multiplexed between different protocols.
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