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31.发明授权公开(公告)号：US10826745B2
公开(公告)日：2020-11-03
申请号：US15952062
申请日：2018-04-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Usa Vilaipornsawai , Javad Abdoli , Jianglei Ma , Ming Jia
Abstract: Embodiments are provided for guard band utilization for synchronous and asynchronous communications in wireless networks. A user equipment (UE) or a network component transmits symbols on data bands assigned for primary communications. The data bands are separated by a guard band having smaller bandwidth than the data bands. The UE or network component further modulates symbols for secondary communications with a spectrally contained wave form, which has a smaller bandwidth than the guard band. The spectrally contained wave form is achieved with orthogonal frequency-division multiplexing (OFDM) modulation or with joint OFDM and Offset Quadrature Amplitude Modulation (OQAM) modulation. The modulated symbols for the secondary communications are transmitted within the guard band.
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公开(公告)号：US10701685B2
公开(公告)日：2020-06-30
申请号：US14836538
申请日：2015-08-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Javad Abdoli , Ming Jia , Jianglei Ma
Abstract: Cyclic prefix based OFDM (CP-OFDM) signals can be filtered using a digital filter whose filter length exceeds the length of a cyclic prefix in CP-OFDM symbols of the signal. In one example, the duration of the filtered CP-OFDM symbol may be expressed by the following equation: M=N+L−1, where M is the duration of the filtered CP-OFDM signal, N is a duration of the CP-OFDM signal, and L is the filter length of the digital filter. Digitally filtering the CP-OFDM signal may include convolving a filtering signal with the CP-OFDM signal. The digital filter may include a finite impulse response (FIR) filter or an infinite impulse response (IIR) filter. In some embodiments, a different digital filter may be applied to each sub-band of the CP-OFDM signal.
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公开(公告)号：US20200014521A1
公开(公告)日：2020-01-09
申请号：US16573267
申请日：2019-09-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
IPC: H04L5/00
Abstract: System and method embodiments are provided for non-cellular wireless access. In an embodiment, a method for non-cell grid based radio access in a radio access network includes determining, by a controller, a group of transmit points (TPs) to assign to a logical entity; assigning, by the controller, a logical entity identifier (ID) to the logical entity, wherein the logical entity ID identifies the logical entity through which a user equipment (UE) communicates with the radio access network; and causing, by the controller, at least one of the TPs in the logical entity to send signals to the UE.
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公开(公告)号：US10530626B2
公开(公告)日：2020-01-07
申请号：US15867362
申请日：2018-01-10
Applicant: Huawei Technologies Co., Ltd.
Inventor： Ming Jia , Jianglei Ma
Abstract: A transmitter adapted for massive multiple-input multiple-output (M-MIMO) operation includes a first set of power amplifiers (PAs) that amplifies a first signal to produce an amplified first signal, and a second set of PAs that amplifies a second signal to produce an amplified second signal, wherein PAs in the first set of PAs are different from PAs in the second set of PAs. The transmitter includes an antenna array operatively coupled to the first set of PAs and the set of second PAs, the antenna array including a plurality of transmit antennas, wherein the antenna array transmits one or more of the amplified signals.
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35.发明授权公开(公告)号：US10454746B2
公开(公告)日：2019-10-22
申请号：US14793286
申请日：2015-07-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Javad Abdoli , Ming Jia , Jianglei Ma
Abstract: A method for performing orthogonal frequency division multiplexing (OFDM)-offset quantization amplitude modulation (OQAM) includes obtaining a data burst. The method includes performing weighted circularly convolved filtering modulation on the data burst to produce an output signal. The method further includes a first wireless device transmitting the output signal to a second wireless device. The second wireless device receives an input signal from the first wireless device, and the second wireless devices performs weighted circularly convolved demodulation filtering on the input signal to produce the data burst.
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Patent Agency Ranking
公开(公告)号：US10454740B2
公开(公告)日：2019-10-22
申请号：US16017743
申请日：2018-06-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Peiying Zhu , Jianglei Ma , Ming Jia , Wen Tong
Abstract: A method for operating a device includes determining adaptation criteria for a waveform to be transmitted by a transmitting device over a communications channel towards a receiving device, and adjusting a generalized multi-carrier multiplexing parameter (GMMP) of the waveform in accordance with the adaptation criteria. The method also includes transmitting an indicator of the adjusted GMMP to at least one of the transmitting device and the receiving device.
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公开(公告)号：US10439845B1
公开(公告)日：2019-10-08
申请号：US15954226
申请日：2018-04-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Robert Wendell Heath, Jr. , Peiying Zhu , Ming Jia
IPC: H04B7/04 , H04L25/02 , H04B7/0408 , H04B7/0452 , H04W16/28 , H04L5/14 , H04L27/26
Abstract: A method for compressive channel estimation in a massive multiple input, multiple output (MIMO) system using sectored random beams is provided. In an embodiment, a method in a massive multiple input, multiple output (MIMO) transceiver for channel estimation includes obtaining a sector. The sector includes less than a complete coverage area of the transceiver. The method also includes transmitting, by the transceiver, a plurality of random beams to a user equipment (UE) in the sector.
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公开(公告)号：US10257007B2
公开(公告)日：2019-04-09
申请号：US16023539
申请日：2018-06-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jing Qiu , Ming Jia , Jianglei Ma
Abstract: The present application relates to a filtering scheme with low complexity. The method includes: dividing an orthogonal frequency division multiplexing (OFDM) signal into a first sideband signal, a first signal, and a second sideband signal; sampling the first sideband signal by using a first sampling rate; sampling the first signal by using a second sampling rate; sampling the second sideband signal by using a third sampling rate; and separately performing filtering processing of a third spectral mask, upsampling processing, and digital frequency conversion processing to generate a first filtered-OFDM (f-OFDM) signal, a second f-OFDM signal and a third f-OFDM signal; and superposing the first f-OFDM signal, the second f-OFDM signal, and the third f-OFDM signal to obtain an f-OFDM signal, where the first sampling rate and the third sampling rate are both less than the second sampling rate.
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公开(公告)号：US20180337816A1
公开(公告)日：2018-11-22
申请号：US15881408
申请日：2018-01-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sanjeewa Herath , Alireza Bayesteh , Ming Jia , Jianglei Ma
Abstract: A bit-level operation may be implemented prior to modulation and resource element (RE) mapping in order to generate a NoMA transmission using standard (QAM, QPSK, BPSK, etc.) modulators. In this way, the bit-level operation is exploited to achieve the benefits of NoMA (e.g., improved spectral efficiency, reduced overhead, etc.) at significantly less signal processing and hardware implementation complexity. The bit-level operation is specifically designed to produce an output bit-stream that is longer than the input bit-stream, and that includes output bit-values that are computed as a function of the input bit-values such that when the output bit-stream is subjected to modulation (e.g., m-ary QAM, QPSK, BPSK), the resulting symbols emulate a spreading operation that would otherwise have been generated from the input bit-stream, either by a NoMA-specific modulator or by a symbol-domain spreading operation.
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公开(公告)号：US10136402B2
公开(公告)日：2018-11-20
申请号：US14674982
申请日：2015-03-31
Applicant: Huawei Technologies Co., Ltd.
Abstract: A method for determining synchronization of uplink timing in a machine type communication (MTC) system comprising a machine type communication device (MTCD) and a network element is disclosed that takes advantage of the MTCD being at a fixed location relative to the network element. The method includes receiving at the MTCD an uplink timing adjustment value from the network element and storing the uplink timing adjustment value at the MTCD. The MTCD then uses the stored uplink timing adjustment value from a previous uplink transmission for synchronizing uplink timing for a subsequent uplink transmission from the MTCD to the network element even following a period of inactivity of the MTCD, or expiration of any existing maximum uplink timing alignment period permitted for use of the timing adjustment value by the MTCD, or MTCD clock drift.
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