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公开(公告)号：US11082173B2
公开(公告)日：2021-08-03
申请号：US15987683
申请日：2018-05-23
发明人： Jianglei Ma , Ming Jia
摘要： Embodiments are provided for supporting variable sub-carrier spacing and symbol duration for transmitting OFDM or other waveform symbols and associated cyclic prefixes. The symbol duration includes the useful symbol length and its associated cyclic prefix length. The variable sub-carrier spacing and symbol duration is determined via parameters indicating the sub-carrier spacing, useful symbol length, and cyclic prefix length. An embodiment method, by a network or a network controller, includes establishing a plurality of multiple access block (MAB) types defining different combinations of sub-carrier spacing and symbol duration for waveform transmissions. The method further includes partitioning a frequency and time plane of a carrier spectrum band into a plurality of MAB regions comprising frequency-time slots for the waveform transmissions. The MAB types are then selected for the MAB regions, wherein one MAB type is assigned to one corresponding MAB region.
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公开(公告)号：US11063712B2
公开(公告)日：2021-07-13
申请号：US15960210
申请日：2018-04-23
发明人： Jianglei Ma , Ming Jia
摘要： Embodiments are provided for supporting variable sub-carrier spacing and symbol duration for transmitting OFDM or other waveform symbols and associated cyclic prefixes. The symbol duration includes the useful symbol length and its associated cyclic prefix length. The variable sub-carrier spacing and symbol duration is determined via parameters indicating the sub-carrier spacing, useful symbol length, and cyclic prefix length. An embodiment method, by a network or a network controller, includes establishing a plurality of multiple access block (MAB) types defining different combinations of sub-carrier spacing and symbol duration for waveform transmissions. The method further includes partitioning a frequency and time plane of a carrier spectrum band into a plurality of MAB regions comprising frequency-time slots for the waveform transmissions. The MAB types are then selected for the MAB regions, wherein one MAB type is assigned to one corresponding MAB region.
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公开(公告)号：US10721681B2
公开(公告)日：2020-07-21
申请号：US16055941
申请日：2018-08-06
发明人： Jianglei Ma , Peiying Zhu , Ming Jia , Wen Tong
摘要： A method of transmitting includes categorizing a transmission between the first device and a second device as one of a plurality of transmission types, and selecting an air interface from a plurality of air interface candidates in accordance with the transmission as categorized. The method also includes sending the transmission to the second device using the selected air interface.
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公开(公告)号：US10700912B2
公开(公告)日：2020-06-30
申请号：US15881408
申请日：2018-01-26
发明人： Sanjeewa Herath , Alireza Bayesteh , Ming Jia , Jianglei Ma
摘要： 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：US20200052949A1
公开(公告)日：2020-02-13
申请号：US16654092
申请日：2019-10-16
发明人： Peiying Zhu , Jianglei Ma , Ming Jia , Wen Tong
摘要： 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：US20190319822A1
公开(公告)日：2019-10-17
申请号：US15954226
申请日：2018-04-16
发明人： Robert Wendell Heath, Jr. , Peiying Zhu , Ming Jia
IPC分类号： H04L25/02 , H04B7/0408 , H04B7/0452 , H04W16/28
摘要： 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：US20190306683A1
公开(公告)日：2019-10-03
申请号：US16442862
申请日：2019-06-17
发明人： Yu Cao , Ming Jia , Jianglei Ma , Javad Abdoli
摘要： A method for operating a machine-type device (MTD) includes determining communications requirements for a machine-type device (MTD), and assigning a first signal waveform selected from a plurality of signal waveforms to the MTD in accordance with the determined communications requirements, wherein each signal waveform has an associated characteristic signal bandwidth.
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公开(公告)号：US20190069341A1
公开(公告)日：2019-02-28
申请号：US16173894
申请日：2018-10-29
发明人： Ming Jia , Jianglei Ma , Peiying Zhu
摘要： System and method embodiments are provided for enabling flexible and reliable UE-to-UE based relay. The embodiments include using fountain codes for combining signals at a suitable network layer higher than a media access control (MAC) sub-layer and using a MAC sub-layer hybrid automatic repeat request (HARQ) transmission scheme. When a relay UE in a UE group for joint reception receives, from a network access point, a data packet intended for a destination UE in the UE group and including fountain code at the higher network layer, the relay UE sends the data packet to the destination UE and returns a HARQ ACK message at the MAC sub-layer to the access point. The destination UE then receives and decodes the data packet. Subsequently, upon receiving the entire data, the destination UE sends an ACK message at the higher network layer to the access point.
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公开(公告)号：US10129928B2
公开(公告)日：2018-11-13
申请号：US13797371
申请日：2013-03-12
发明人： Ming Jia , Jianglei Ma , Peiying Zhu
摘要： System and method embodiments are provided for enabling flexible and reliable UE-to-UE based relay. The embodiments include using fountain codes for combining signals at a suitable network layer higher than a media access control (MAC) sub-layer and using a MAC sub-layer hybrid automatic repeat request (HARQ) transmission scheme. When a relay UE in a UE group for joint reception receives, from a network access point, a data packet intended for a destination UE in the UE group and including fountain code at the higher network layer, the relay UE sends the data packet to the destination UE and returns a HARQ ACK message at the MAC sub-layer to the access point. The destination UE then receives and decodes the data packet. Subsequently, upon receiving the entire data, the destination UE sends an ACK message at the higher network layer to the access point.
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公开(公告)号：US20180309609A1
公开(公告)日：2018-10-25
申请号：US16017743
申请日：2018-06-25
发明人： Peiying Zhu , Jianglei Ma , Ming Jia , Wen Tong
CPC分类号： H04L27/2637 , H04L5/0021 , H04L5/0066 , H04L25/03834 , H04L27/2602 , H04L27/264
摘要： 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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