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公开(公告)号：US20220029768A1
公开(公告)日：2022-01-27
申请号：US16937823
申请日：2020-07-24
Applicant: SANJEEWA HERATH , JAVAD ABDOLI
Inventor： SANJEEWA HERATH , JAVAD ABDOLI
Abstract: 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：US11005619B2
公开(公告)日：2021-05-11
申请号：US16369023
申请日：2019-03-29
Applicant: Ming Jia , Jianglei Ma , Alireza Bayesteh , Sanjeewa Herath
Inventor： Ming Jia , Jianglei Ma , Alireza Bayesteh , Sanjeewa Herath
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：US20190166624A1
公开(公告)日：2019-05-30
申请号：US15824352
申请日：2017-11-28
Applicant: Shayan Mohajer Hamidi , Sanjeewa Herath , Alireza Bayesteh , Amir Keyvan Khandani
Inventor： Shayan Mohajer Hamidi , Sanjeewa Herath , Alireza Bayesteh , Amir Keyvan Khandani
Abstract: A diversity channel for data transmission is obtained by communication equipment. The diversity channel indicates communication resources that are assigned to the communication equipment, and is from a set of diversity channels that are consistent with codewords of a linear code. The communication equipment also transmits a data transmission using the communication resources indicated by the diversity channel. The diversity channel assignment could be determined, by network equipment for example, and information that identifies the diversity channel could be transmitting to the communication equipment. Such information could be explicitly or implicitly signaled to the communication equipment. A set of diversity channels could be generated directly as codewords of one or more linear codes, or additional operations could be applied to such codewords, and possibly other information that is not generated using a code, to provide a diversity channel set.
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14.发明申请公开(公告)号：US20190158338A1
公开(公告)日：2019-05-23
申请号：US15821809
申请日：2017-11-23
Applicant: SANJEEWA HERATH , ALIREZA BAYESTEH , MING JIA , JIANGLEI MA , PEIYING ZHU , WEN TONG
Inventor： SANJEEWA HERATH , ALIREZA BAYESTEH , MING JIA , JIANGLEI MA , PEIYING ZHU , WEN TONG
Abstract: Methods and systems are disclosed for symbol sequence generation and transmission for non-orthogonal multiple access (NoMA) transmission. A NoMA signal may be generated based on: (1) a first symbol sequence, the first symbol sequence determined from a set of input bits and associated with a first MA signature within a first MA signature space; (2) a second symbol sequence determined based on the first symbol sequence, the second symbol sequence being associated with a second MA signature within a second MA signature space; and (3) a symbol-to-resource element mapping applied to the second symbol sequence to produce the NoMA signal.
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公开(公告)号：US12295058B2
公开(公告)日：2025-05-06
申请号：US17582557
申请日：2022-01-24
Applicant: Javad Abdoli , Sanjeewa Herath
Inventor： Javad Abdoli , Sanjeewa Herath
Abstract: 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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Patent Agency Ranking
公开(公告)号：US20220158872A1
公开(公告)日：2022-05-19
申请号：US17586957
申请日：2022-01-28
Applicant: SANJEEWA HERATH , JAVAD ABDOLI , JIANGLEI MA
Inventor： SANJEEWA HERATH , JAVAD ABDOLI , JIANGLEI MA
Abstract: 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：US20210127450A1
公开(公告)日：2021-04-29
申请号：US16664340
申请日：2019-10-25
Applicant: JAVAD ABDOLI , SANJEEWA HERATH
Inventor： JAVAD ABDOLI , SANJEEWA HERATH
Abstract: 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：US20210127414A1
公开(公告)日：2021-04-29
申请号：US16664302
申请日：2019-10-25
Applicant: JAVAD ABDOLI , SANJEEWA HERATH
Inventor： JAVAD ABDOLI , SANJEEWA HERATH
Abstract: 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：US20210067392A1
公开(公告)日：2021-03-04
申请号：US16559865
申请日：2019-09-04
Applicant: JAVAD ABDOLI , SANJEEWA HERATH , ALIREZA BAYESTEH
Inventor： JAVAD ABDOLI , SANJEEWA HERATH , ALIREZA BAYESTEH
IPC: H04L27/26
Abstract: 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：US10887139B2
公开(公告)日：2021-01-05
申请号：US16599753
申请日：2019-10-11
Applicant: Alireza Bayesteh , Ming Jia , Sanjeewa Herath , Jianglei Ma
Inventor： Alireza Bayesteh , Ming Jia , Sanjeewa Herath , Jianglei Ma
Abstract: Aspects of the present disclosure provide a scheme for generating a multiple access (MA) signal that include mapping each of at least one stream of bits to generate a set of modulated symbols and transmitting the set of modulated symbols. The spreading signatures that are selected to map the at least one stream of bits are selected, at least in part, based on a set of compatibility rules. The spreading involves mapping each stream of bits using a respective spreading signature from a set of spreading signatures to generate a respective set of modulated symbols, wherein real spreading signature components of the spreading signatures are orthogonal to each other and imaginary spreading signature components of the spreading signatures are orthogonal to each other.
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