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公开(公告)号：US11700102B2
公开(公告)日：2023-07-11
申请号：US16937823
申请日：2020-07-24
申请人： Sanjeewa Herath , Javad Abdoli
发明人： Sanjeewa Herath , Javad Abdoli
CPC分类号： H04L5/0055 , H04L5/0007 , H04L5/0042 , H04L5/0094 , H04L27/2604
摘要： Systems and methods for transmitting uplink control information, for example ACK/NACK, while in RRC_inactive state, are provided. Uplink control information is transmitted while in RRC_INACTIVE state by transmitting a sequence from a set of possible sequences to convey the uplink control information, the transmitted sequence associated with a value of the uplink control information. The sequence is asynchronously transmitted. Signalling may be used to configure a transmission resource within which to transmit the sequence, wherein the transmission resource has a time duration that is longer than a time duration to transmit the sequence. This has the effect of introducing a gap following sequence transmission that can ensure the sequence transmission does not interfere with a data transmission.
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公开(公告)号：US11070245B1
公开(公告)日：2021-07-20
申请号：US16999747
申请日：2020-08-21
摘要： A transmission method, and corresponding transmitter are provided that use a combination of sparse symbol mapping with non-sparse spreading. This can be used for a low-PAPR multiple access scheme where good performance is achieved by sparse domain multi-user detection. The provided method uses per-frequency block time-domain non-sparse spreading across sparse blocks which provides PAPR reduction. Sparsity patterns are partitioned into groups that allows PAPR reduction. The method may be used to support the transmission of a single-carrier signal, e.g. DFT-spread signal, to provide PAPR reduction. More generally the provided method can use any low-PAPR waveform, for example any single-carrier waveform or any single-subcarrier waveform.
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公开(公告)号：US11240867B2
公开(公告)日：2022-02-01
申请号：US16664340
申请日：2019-10-25
申请人： Javad Abdoli , Sanjeewa Herath
发明人： Javad Abdoli , Sanjeewa Herath
摘要： Some aspects of the present disclosure introduce a new downlink (DL) bandwidth part (BWP) and a new uplink (UL) BWP for communication in the RRC_INACTIVE state. In addition, aspects of the disclosure also provide for configuring generic parameters of the BWP, which include, but not limited to, frequency location, bandwidth, subcarrier spacing (SCS), and cyclic prefix (CP). Some aspects of the present disclosure may support a reinterpretation of generic parameters of a BWP, for example which may be configured for the RRC_CONNECTED state, to be used in the RRC_INACTIVE state. Some aspects of the present disclosure are directed to implicit DL BWP switching in the RRC_INACTIVE state where no BWP identifier (ID) indication is needed as part of the switching mechanism.
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公开(公告)号：US11909561B2
公开(公告)日：2024-02-20
申请号：US17586957
申请日：2022-01-28
申请人： Sanjeewa Herath , Javad Abdoli , Jianglei Ma
发明人： Sanjeewa Herath , Javad Abdoli , Jianglei Ma
CPC分类号： H04L25/0226 , H04L1/0061 , H04L5/0051 , H04W68/005 , H04W72/23 , H04W76/11
摘要： Some embodiments of the present disclosure provide control signaling mechanisms to support data transmission by a user equipment (UE) that is in the RRC_INACTIVE state and, more generally, in any inactive state. Beyond simply supporting data transmission by a user equipment that is in the RRC_INACTIVE state, aspects of the present application provide mechanisms for configuring the UE for preamble transmission or sounding reference signal (SRS) transmission and for toggling between such transmissions. Aspects of the present application relate to mechanisms for enabling Timing Advance estimation, which mechanisms are not burdened with high overhead and which allow the UE to remain in the RRC_INACTIVE state.
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公开(公告)号：US11832274B2
公开(公告)日：2023-11-28
申请号：US17668765
申请日：2022-02-10
申请人： Javad Abdoli , Sanjeewa Herath
发明人： Javad Abdoli , Sanjeewa Herath
IPC分类号： H04W72/23 , H04W72/1273 , H04L1/1812 , H03M13/09
CPC分类号： H04W72/23 , H03M13/09 , H04L1/1812 , H04W72/1273
摘要： Control signaling mechanisms are provided to support data transmissions to or from a user equipment (UE) in an inactive state. In some embodiments, a UE in an inactive state receives DCI including: a cyclic redundancy check (CRC) scrambled by a radio network temporary identifier (RNTI) that is specific to a group of UEs, the group of UEs including the UE; and a resource assignment for a data transmission to the UE. The data transmission is then received on a physical shared channel. In further embodiments, a UE in an inactive state receives DCI including: a CRC scrambled by a paging RNTI; and a resource assignment for a paging message to the UE. A data transmission is received by the UE in the paging message or in a further transmission that is scheduled by the paging message.
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公开(公告)号：US11284429B2
公开(公告)日：2022-03-22
申请号：US16664302
申请日：2019-10-25
申请人： Javad Abdoli , Sanjeewa Herath
发明人： Javad Abdoli , Sanjeewa Herath
摘要： Control signaling mechanisms are provided to support data transmissions to or from a user equipment (UE) in an inactive state. In some embodiments, a UE in an inactive state receives DCI including: a cyclic redundancy check (CRC) scrambled by a radio network temporary identifier (RNTI) that is specific to a group of UEs, the group of UEs including the UE; and a resource assignment for a data transmission to the UE. The data transmission is then received on a physical shared channel. In further embodiments, a UE in an inactive state receives DCI including: a CRC scrambled by a paging RNTI; and a resource assignment for a paging message to the UE. A data transmission is received by the UE in the paging message or in a further transmission that is scheduled by the paging message.
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公开(公告)号：US11271781B2
公开(公告)日：2022-03-08
申请号：US16723403
申请日：2019-12-20
申请人： Sanjeewa Herath , Javad Abdoli , Jianglei Ma
发明人： Sanjeewa Herath , Javad Abdoli , Jianglei Ma
摘要： Some embodiments of the present disclosure provide control signaling mechanisms to support data transmission by a user equipment (UE) that is in the RRC_INACTIVE state and, more generally, in any inactive state. Beyond simply supporting data transmission by a user equipment that is in the RRC_INACTIVE state, aspects of the present application provide mechanisms for configuring the UE for preamble transmission or sounding reference signal (SRS) transmission and for toggling between such transmissions. Aspects of the present application relate to mechanisms for enabling Timing Advance estimation, which mechanisms are not burdened with high overhead and which allow the UE to remain in the RRC_INACTIVE state.
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公开(公告)号：US11133969B2
公开(公告)日：2021-09-28
申请号：US16559865
申请日：2019-09-04
申请人： Javad Abdoli , Sanjeewa Herath , Alireza Bayesteh
发明人： Javad Abdoli , Sanjeewa Herath , Alireza Bayesteh
IPC分类号： H04L27/26
摘要： Aspects of the present application use a linear transformation of a sparse mapped single carrier transmission at a transmitter, for which a comparable inverse transform of the linear transform applied at the transmitter can be applied at the receiver. The linear transform reduces the sparsity of sparse mapped symbols. The use of the linear transform to reduce the sparsity enables peak-to-average power ratio (PAPR) and/or cubic metric to be reduced as compared to if the linear transform is not used. The linear transforms may be implemented in a block-wise manner, element-wise manner or combination thereof.
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公开(公告)号：US11050532B2
公开(公告)日：2021-06-29
申请号：US16369023
申请日：2019-03-29
申请人： Ming Jia , Jianglei Ma , Alireza Bayesteh , Sanjeewa Herath
发明人： Ming Jia , Jianglei Ma , Alireza Bayesteh , Sanjeewa Herath
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：US11005619B2
公开(公告)日：2021-05-11
申请号：US16369023
申请日：2019-03-29
申请人： Ming Jia , Jianglei Ma , Alireza Bayesteh , Sanjeewa Herath
发明人： Ming Jia , Jianglei Ma , Alireza Bayesteh , Sanjeewa Herath
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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