公开(公告)号：US20220131723A1

公开(公告)日：2022-04-28

申请号：US17080917

申请日：2020-10-27

申请人： ALIREZA BAYESTEH ,  NAVID TADAYON ,  JIANGLEI MA

发明人： ALIREZA BAYESTEH ,  NAVID TADAYON ,  JIANGLEI MA

IPC分类号： H04L25/02 ,  H04B7/08

摘要： Some embodiments of the present disclosure provide for use of a linear chirp signal as a basis for a sensing signal. Modification of the linear chirp signal by a signature function can allow a receiver of the sensing signal to determine an identity for a source of the sensing signal. Accordingly, upon processing the received sensing signal to obtain path parameter estimates, the receiver can direct a transmission of an indication of the path parameter estimates to the source of the sensing signal. Aspects of the present application relate to performing multi-node, multi-path channel estimation on the basis of processing the received sensing signal. Conveniently, the processing is performed with low complexity.

公开(公告)号：US20210194734A1

公开(公告)日：2021-06-24

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

IPC分类号： H04L25/02 ,  H04L5/00 ,  H04W72/04 ,  H04W68/00 ,  H04L1/00 ,  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.

公开(公告)号：US20210099330A1

公开(公告)日：2021-04-01

申请号：US16585553

申请日：2019-09-27

申请人： NUWAN SURESH FERDINAND ,  MING JIA ,  JIANGLEI MA

发明人： NUWAN SURESH FERDINAND ,  MING JIA ,  JIANGLEI MA

IPC分类号： H04L27/26 ,  H04L25/03

摘要： A system and method are provided for processing symbols for transmission. A set of 2K outputs is produced that includes K real components and K imaginary components from K complex symbols. A Fourier transform operation on the 2K outputs produces 2K Fourier transform outputs. Transmit pulse shaping is applied to the 2K Fourier transform outputs. The transmit pulse shape may be Nyquist or non-Nyquist. An inverse Fourier transform operation on the J pulse shaped outputs produces an inverse Fourier transform output. In the receiver, equalization is performed to remove the effect of both the channel and the transmit pulse shape. Nyquist pulse shaping is performed by applying a Nyquist pulse shape prior to converting back to time domain. The approach avoids self-interference, even in situations where the transmit pulse shape is non-Nyquist. The transmitter is free to select a pulse shape to optimize PAPR without being concerned with interference.

公开(公告)号：US20210067294A1

公开(公告)日：2021-03-04

申请号：US16556805

申请日：2019-08-30

申请人： HAMIDREZA FARMANBAR ,  JIANGLEI MA ,  YICHENG LIN ,  NAVID TADAYON

发明人： HAMIDREZA FARMANBAR ,  JIANGLEI MA ,  YICHENG LIN ,  NAVID TADAYON

IPC分类号： H04L5/00 ,  H04B7/0404 ,  H04B7/06

摘要： Sparse reference signal-related signaling, for a wireless channel that is associated with multiple antenna ports, is communicated with a User Equipment (UE). The sparse reference signal-related signaling is consistent with a sparse signaling pattern. In an embodiment, the sparse signaling pattern includes reference signal-related signaling associated with each of the antenna ports, and has been determined based on previous reference signal-related signaling previously communicated with the UE or another UE. In another embodiment, the sparse reference signal-related signaling is consistent with a varying sparse signaling pattern that is based on previous reference signal-related signaling previously communicated with the UE or another UE.

公开(公告)号：US20200314727A1

公开(公告)日：2020-10-01

申请号：US16823401

申请日：2020-03-19

申请人： HUA XU ,  JIANGLEI MA ,  LIQING ZHANG

发明人： HUA XU ,  JIANGLEI MA ,  LIQING ZHANG

IPC分类号： H04W40/22 ,  H04L12/741

摘要： User equipment (UE) cooperation could improve latency, reliability, throughput, coverage and capacity in wireless communication systems. UE cooperation could include a group of UEs helping each other with transmissions through packet forwarding. Methods are provided that include receiving, by a UE in a predefined UE group, a plurality of packets. The plurality of packets includes a first packet that is scrambled using a UE specific identifier, and a second packet that is scrambled using a UE group specific identifier. The methods further include forwarding, by the UE, the plurality of packets.

公开(公告)号：US20200235876A1

公开(公告)日：2020-07-23

申请号：US16743597

申请日：2020-01-15

申请人： HUA XU ,  JIANGLEI MA ,  LIQING ZHANG

发明人： HUA XU ,  JIANGLEI MA ,  LIQING ZHANG

IPC分类号： H04L5/00 ,  H04W72/04 ,  H04L1/00

摘要： Aspects of the present application provide methods and devices for use in User Equipment (UE) cooperation. A packet transmitted between a base station and a UE or between UEs includes a packet destination identifier that identifies a destination of the packet. A receiving the packet from a base station or another UE can determine whether the UE is the destination of the packet. When the UE is the destination of the packet, the UE decodes the packet. When the UE is not the destination of the packet, the UE forwards the packet to another UE. The packet may include a packet source identifier that can be used by the destination to determine where the packet originated. In some instances, the cooperative UEs do not need to decode the entire packet to be able to determine the destination of the packet and therefore can forward the packet along with less processing.

公开(公告)号：US20200008222A1

公开(公告)日：2020-01-02

申请号：US16544274

申请日：2019-08-19

申请人： YU CAO ,  LIQING ZHANG ,  JIANGLEI MA

发明人： YU CAO ,  LIQING ZHANG ,  JIANGLEI MA

IPC分类号： H04W72/12 ,  H04L1/18 ,  H04W28/04 ,  H04W72/14

摘要： Methods and systems are provided for signaling for semi-static configuration in grant free uplink transmissions. Radio resource control (RRC) signaling is used to provide information from a base station to a user equipment (UE) that configure the grant free transmission resource to be used by the UE. In some implementations, the RRC signaling may be used in conjunction with system information that is transmitted to all UEs and/or Downlink Control Information (DCI) that the UE needs to access subsequent to the RRC signaling. In some implementations, the DCI includes an activation or deactivation indicator that the UE monitors to determine when the UE is allowed to transmit to the BS or should stop transmitting. Implementations allow for grant free transmission resources to be configured on an individual user based and a group basis.

公开(公告)号：US20190312694A1

公开(公告)日：2019-10-10

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

IPC分类号： H04L5/00 ,  H04L1/00 ,  H04L27/26

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.

公开(公告)号：US20180241603A1

公开(公告)日：2018-08-23

申请号：US15782400

申请日：2017-10-12

申请人： MING JIA ,  JIANGLEI MA

发明人： MING JIA ,  JIANGLEI MA

IPC分类号： H04L27/26

CPC分类号： H04L27/2614 ,  H04J13/0062 ,  H04J2011/0009 ,  H04L25/03834 ,  H04L27/2613 ,  H04L27/2634 ,  H04L27/2636 ,  H04L27/2666

摘要： Aspects of the description provide a method and devices to allow frequency domain spectral shaping (FDSS) to be used on both a reference sequence and data to enable low PAPR. Being able to use FDSS on both the reference sequence and data allows the FDSS to be transparent to the receiver. The method comprises obtaining a first sequence, wherein the first sequence is a base sequence of a set of base sequences, the set of base sequences comprising sub group base sequences, the first sequence obtained by cyclically repeating the sub group sequences at least once; and transmitting, by the device, a reference signal based on the first sequence.

公开(公告)号：US20180206262A1

公开(公告)日：2018-07-19

申请号：US15871529

申请日：2018-01-15

申请人： YU CAO ,  JIANGLEI MA ,  LIQING ZHANG

发明人： YU CAO ,  JIANGLEI MA ,  LIQING ZHANG

IPC分类号： H04W72/12 ,  H04W48/16 ,  H04W76/28 ,  H04W28/02 ,  H04W56/00

摘要： A user equipment in a wireless communication system may operate in different states, e.g. an idle state, an active/connected state, or an inactive state. Depending upon the state the UE is in, the UE may or may not have its uplink transmission synchronized with the uplink transmissions of other UEs. Mechanisms are disclosed for the UE to send a grant-free uplink transmission, even when the UE does not have its uplink transmission synchronized with the uplink transmissions from other UEs.