公开(公告)号：US20190150121A1

公开(公告)日：2019-05-16

申请号：US16188779

申请日：2018-11-13

Applicant: JAVAD ABDOLI ,  ZHENFEI TANG

Inventor： JAVAD ABDOLI ,  ZHENFEI TANG

IPC: H04W72/04 ,  H04L27/26

Abstract: Methods and devices for configuring an initial active downlink bandwidth part as part of an initial access procedure are provided. In one provided method, a base station broadcasts a synchronization signal block (SSB) that includes a control resource set (CORESET) configuration index. The CORESET configuration index is one of a plurality of CORESET configuration indexes, each CORESET configuration index being associated with a respective configuration of a CORESET. Each configuration includes a CORESET frequency size, a CORESET time duration, and a frequency offset of the CORESET with respect to the SSB selected from a set of predefined frequency offsets. The initial active downlink bandwidth part is defined as having the same frequency location and bandwidth as the CORESET. The base station transmits, as part of a physical downlink control channel (PDCCH) within the CORESET, information indicating scheduling of remaining minimum system information (RMSI) in a physical downlink shared channel (PDSCH).

公开(公告)号：US10128897B2

公开(公告)日：2018-11-13

申请号：US15165249

申请日：2016-05-26

Applicant: Javad Abdoli ,  Ming Jia

Inventor： Javad Abdoli ,  Ming Jia

IPC: H04B1/69 ,  H04W4/00 ,  H04B1/04 ,  H04W4/70

Abstract: A two-phase approach to machine-type communications is provided. In a first phase, for activity detection, at least one symbol is transmitted using a long signature. During a second phase, for data transmission, information-carrying symbols are transmitted using a short spreading signature. Activity detection performance is enhanced through the use of a longer spreading signature.

公开(公告)号：US20170346526A1

公开(公告)日：2017-11-30

申请号：US15165249

申请日：2016-05-26

Applicant: JAVAD ABDOLI ,  MING JIA

Inventor： JAVAD ABDOLI ,  MING JIA

IPC: H04B1/69 ,  H04W4/00 ,  H04B1/04

CPC classification number: H04B1/69 ,  H04B1/04 ,  H04B1/707 ,  H04W4/70

Abstract: A two-phase approach to machine-type communications is provided. In a first phase, for activity detection, at least one symbol is transmitted using a long signature. During a second phase, for data transmission, information-carrying symbols are transmitted using a short spreading signature. Activity detection performance is enhanced through the use of a longer spreading signature.

公开(公告)号：US20170251479A1

公开(公告)日：2017-08-31

申请号：US15055146

申请日：2016-02-26

Applicant: Javad Abdoli ,  Ming Jia ,  Jianglei Ma

Inventor： Javad Abdoli ,  Ming Jia ,  Jianglei Ma

IPC: H04W72/04 ,  H04J13/00 ,  H04W74/08

CPC classification number: H04W72/0466 ,  H04B1/71072 ,  H04J13/0003 ,  H04W72/0413 ,  H04W74/0825

Abstract: Methods and devices are disclosed for decoding multiple sparsely encoded data sequences in a wireless communications network. A received signal carrying multiple sparsely encoded data sequences is decoded by selecting a first plurality of the data sequences and performing multi-user decoding on the received signal to decode the first plurality of data sequences. Other data sequences are treated as noise. The plurality of data sequences is selected to meet a collision threshold for the multi-user decoding. Data sequences may be selected based on a collision contribution and signal quality metrics. A modified received signal is generated to remove signals associated with the multiple sparsely encoded data sequences which have been successfully decoded. The method may be performed for additional iterations to select a new plurality of data sequences, and perform the multi-user decoding on the modified received signal to decode additional data sequences, until a stopping condition is met.

公开(公告)号：US12218871B2

公开(公告)日：2025-02-04

申请号：US18324239

申请日：2023-05-26

Applicant: Nuwan Suresh Ferdinand ,  Ming Jia ,  Jianglei Ma ,  Javad Abdoli

Inventor： Nuwan Suresh Ferdinand ,  Ming Jia ,  Jianglei Ma ,  Javad Abdoli

IPC: H04L5/00 ,  H04L25/02 ,  H04L27/10

Abstract: A reference signaling scheme is provided that is based on the use of a Zadoff Chu sequence with cyclic repetition, optionally code division multiplexing precoding, together with frequency domain spectral shaping (FDSS). A specific pulse shape design for the FDSS part of the reference signal scheme in some embodiments involves the use of a raised cosine pulse raised to the power of β. The new solution for generating reference signals has a Low peak average power ratio that matches the PAPR of SC-OQAM, good channel estimation performance, and the ability to implement CDM in the frequency domain to increase multiplexing gain.

公开(公告)号：US11706002B2

公开(公告)日：2023-07-18

申请号：US17064098

申请日：2020-10-06

Applicant: Nuwan Suresh Ferdinand ,  Ming Jia ,  Jianglei Ma ,  Javad Abdoli

Inventor： Nuwan Suresh Ferdinand ,  Ming Jia ,  Jianglei Ma ,  Javad Abdoli

IPC: H04L5/00 ,  H04L27/10 ,  H04L25/02

CPC classification number: H04L5/0048 ,  H04L25/0202 ,  H04L27/10

Abstract: A reference signaling scheme is provided that is based on the use of a Zadoff Chu sequence with cyclic repetition, optionally code division multiplexing precoding, together with frequency domain spectral shaping (FDSS). A specific pulse shape design for the FDSS part of the reference signal scheme in some embodiments involves the use of a raised cosine pulse raised to the power of β. The new solution for generating reference signals has a Low peak average power ratio that matches the PAPR of SC-OQAM, good channel estimation performance, and the ability to implement CDM in the frequency domain to increase multiplexing gain.

公开(公告)号：US20220167387A1

公开(公告)日：2022-05-26

申请号：US17668765

申请日：2022-02-10

Applicant: JAVAD ABDOLI ,  SANJEEWA HERATH

Inventor： JAVAD ABDOLI ,  SANJEEWA HERATH

IPC: H04W72/12 ,  H04L1/18 ,  H03M13/09 ,  H04W72/04

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.

公开(公告)号：US11240867B2

公开(公告)日：2022-02-01

申请号：US16664340

申请日：2019-10-25

Applicant: Javad Abdoli ,  Sanjeewa Herath

Inventor： Javad Abdoli ,  Sanjeewa Herath

IPC: H04W76/27 ,  H04W72/04 ,  H04W68/02 ,  H04W52/02 ,  H04L5/00

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.

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

IPC: H04L5/00 ,  H04L27/26

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.

公开(公告)号：US10938439B2

公开(公告)日：2021-03-02

申请号：US16162621

申请日：2018-10-17

Applicant: Javad Abdoli ,  Ming Jia

Inventor： Javad Abdoli ,  Ming Jia

IPC: H04B1/69 ,  H04B1/707 ,  H04W4/70 ,  H04B1/04

Abstract: A two-phase approach to machine-type communications is provided. In a first phase, for activity detection, at least one symbol is transmitted using a long signature. During a second phase, for data transmission, information-carrying symbols are transmitted using a short spreading signature. Activity detection performance is enhanced through the use of a longer spreading signature.