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公开(公告)号：US11516060B2
公开(公告)日：2022-11-29
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：US10938876B2
公开(公告)日：2021-03-02
申请号：US16281623
申请日：2019-02-21
发明人： Javad Abdoli , Jianglei Ma , Ming Jia
摘要： Methods and devices are disclosed for encoding and transmitting data sequences for low data rate applications. An encoded data sequence is transformed and used to shape a multi-carrier pulse to create a narrow-band signal for transmission. Time domain tails of the narrow-band signal may be removed to decrease overhead. The data may be first encoded to create a sparse modulated data sequence. Multi-carrier pulse shaping may be carried out using frequency division multiplexing (FDM) or filter bank multi-carrier (FBMC) techniques. Alternatively, single carrier pulse shaping may be used to create the narrow-band signal.
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公开(公告)号：US10827419B2
公开(公告)日：2020-11-03
申请号：US15960288
申请日：2018-04-23
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：US10736064B2
公开(公告)日：2020-08-04
申请号：US16181824
申请日：2018-11-06
摘要： 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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公开(公告)号：US10645643B2
公开(公告)日：2020-05-05
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：US10531432B2
公开(公告)日：2020-01-07
申请号：US14668577
申请日：2015-03-25
发明人： Jianglei Ma , Ming Jia , Peiying Zhu , Wen Tong
摘要： An embodiment method of resource allocation for sparse code multiple access (SCMA) transmissions includes partitioning a resource block into a plurality of resource regions. The method also includes assigning the plurality of resource regions to respective device groups. The resource region assignments are then signaled to devices of the respective device groups. The method also includes receiving SCMA signals from the devices of the respective device groups. The SCMA signals from one group of the respective device groups are asynchronous with respect to the SCMA signals from another group of the respective device groups.
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公开(公告)号：US10512035B2
公开(公告)日：2019-12-17
申请号：US15988758
申请日：2018-05-24
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：US20190075532A1
公开(公告)日：2019-03-07
申请号：US16181824
申请日：2018-11-06
CPC分类号： H04W56/001 , H04W4/70
摘要： 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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公开(公告)号：US10181935B2
公开(公告)日：2019-01-15
申请号：US15361105
申请日：2016-11-25
摘要： Disclosed are a pilot configuration method and an apparatus. The method includes: before allocating a pilot to a first user, determining, by a base station, interference between the first user and a second user if the base station allocates a pilot of the second user to the first user; if the interference between the first user and the second user is less than a preset threshold, the pilot allocated by the base station to the first user is the same as a pilot used by the second user; or if the interference between the first user and the second user is greater than or equal to the preset threshold, the pilot allocated by the base station to the first user is different from the pilot used by the second user.
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公开(公告)号：US20190013904A1
公开(公告)日：2019-01-10
申请号：US16132028
申请日：2018-09-14
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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