公开(公告)号：US10298431B2

公开(公告)日：2019-05-21

申请号：US16173507

申请日：2018-10-29

Applicant: IDAC Holdings, Inc.

Inventor： Alphan Sahin ,  Rui Yang ,  Fengjun Xi ,  Oghenekome Oteri ,  Hanqing Lou ,  Robert L. Olesen

IPC: H04L25/02 ,  H04J11/00 ,  H04L27/26 ,  H04L25/03

Abstract: A wireless transmit/receive unit (WTRU) may generate a first signal that utilizes a tail suppression signal generated from data and utilizes a first unique word. Elements of the data and the first signal may be mapped to one or more discrete Fourier transform spread (DFT-S) functions. An inverse DFT on symbols generated by the one or more DFT-S functions may be performed to generate a second signal for transmission.

公开(公告)号：US11575467B2

公开(公告)日：2023-02-07

申请号：US16763599

申请日：2018-11-12

Applicant: IDAC Holdings, Inc.

Inventor： Chunxuan Ye ,  Fengjun Xi ,  Kyle Jung-Lin Pan

IPC: H04L1/00 ,  H04L1/1812 ,  H04L1/1867 ,  H04L69/00

Abstract: Systems, procedures, and instrumentalities are disclosed for transmissions with polar codes. A transmitting entity may determine a mother code length. The mother code length may be based on value(s), e.g., a maximum number of transmissions. The transmitting entity may determine a number of information bits to be polar encoded. The number of information bits may be larger than a number of payload bits. The transmitting entity may map the number of information bits to a number of bit channels of a polar code. The transmitting entity may polar encode the information bits in the bit channels using the determined mother code length. The transmitting entity may partition the polar encoded bits into a number of parts. The number of parts may be based on one or more values, e.g., the maximum number of transmissions. The transmitting entity may transmit bits that have been interleaved to a circular buffer.

公开(公告)号：US20220330325A1

公开(公告)日：2022-10-13

申请号：US17845617

申请日：2022-06-21

Applicant: IDAC Holdings, Inc.

Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi ,  Chunxuan Ye

IPC: H04W74/00 ,  H04W56/00 ,  H04W72/00 ,  H04W74/08

Abstract: Methods, systems, and devices for addressing collisions of possible random access channel (RACH) occasions. A wireless transmit receive unit (WTRU) may receive an indication of semi-static UL/DL information including configuration of RACH occasions in a remaining minimum system information (RMSI) and an indication of one or more actually transmitted synchronization signal (SS) blocks. The WTRU may then assess whether there are RACH occasions based on the configuration information and determine whether any of the RACH occasions are valid, wherein the RACH occasion may be valid based on Based on the RACH occasion is after all actually transmitted SS blocks indicated and/or whether an SS block override is disabled or enabled. The WTRU may transmit a RACH in one or more of the RACH occasions that have been determined to be valid.

公开(公告)号：US11405950B2

公开(公告)日：2022-08-02

申请号：US16767322

申请日：2018-11-27

Applicant: IDAC HOLDINGS, INC.

Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi ,  Chunxuan Ye

IPC: H04W74/00 ,  H04W56/00 ,  H04W72/00 ,  H04W74/08

Abstract: Methods, systems, and devices for addressing collisions of possible random access channel (RACH) occasions. A wireless transmit receive unit (WTRU) may receive an indication of semi-static UL/DL information including configuration of RACH occasions in a remaining minimum system information (RMSI) and an indication of one or more actually transmitted synchronization signal (SS) blocks. The WTRU may then assess whether there are RACH occasions based on the configuration information and determine whether any of the RACH occasions are valid, wherein the RACH occasion may be valid based on Based on the RACH occasion is after all actually transmitted SS blocks indicated and/or whether an SS block override is disabled or enabled. The WTRU may transmit a RACH in one or more of the RACH occasions that have been determined to be valid.

公开(公告)号：US20220231786A1

公开(公告)日：2022-07-21

申请号：US17713793

申请日：2022-04-05

Applicant: IDAC HOLDINGS, INC.

Inventor： Chunxuan Ye ,  Nirav B. Shah ,  Fengjun Xi ,  Kyle Pan

IPC: H04L1/00 ,  H03M13/11 ,  H03M13/00 ,  H04L1/18

Abstract: A method may comprise receiving a first signal comprising first LDPC bits including systematic bits and parity bits and transmitting information indicating that the first signal was incorrectly received. A second signal comprising second LDPC bits may be received in response to the transmitting. The second signal may include LDPC bits according to a lifting size of an LDPC base graph.

公开(公告)号：US11375548B2

公开(公告)日：2022-06-28

申请号：US16596470

申请日：2019-10-08

Applicant: IDAC HOLDINGS, INC.

Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi

IPC: H04W74/00 ,  H04W74/08 ,  H04W72/04 ,  H04L1/18 ,  H04L12/413

Abstract: Methods, devices, and systems for physical random access channel (PRACH) access. A WTRU transmits a message to a gNB. The message includes a PRACH preamble from a first set. The method also includes performing a hidden node detection procedure prior to a random access response (RAR) window. The RAR window corresponds to the transmitted message. The method also includes attempting to receive a RAR in response to the transmitted message, during the RAR window. The method also includes retransmitting the message to the gNB, including a PRACH preamble from a second set, if the RAR is not received during the RAR window and a hidden node is detected; and retransmitting the message to the gNB, including a PRACH preamble from the first set, if the RAR is not received during the RAR window and the hidden node is not detected.

公开(公告)号：US11038540B2

公开(公告)日：2021-06-15

申请号：US16482880

申请日：2018-01-31

Applicant: IDAC HOLDINGS, INC.

Inventor： Chunxuan Ye ,  Hanqing Lou ,  Fengjun Xi ,  Kyle Jung-Lin Pan

IPC: H03M13/09 ,  H03M13/00 ,  H03M13/11

Abstract: A method includes receiving a time domain resource allocation (TDRA) list configuration including entries, each including a resource allocation that includes a slot offset value. L1 signaling is received indicating a minimum slot offset value. Downlink control information (DCI) is decoded on a physical downlink control channel in a slot. An index is obtained from the decoded DCI, identifying an entry in the TDRA list. A particular slot offset value identified by the index is retrieved from the TDRA list and compared with the minimum slot offset value. If the particular slot offset value is less than the minimum slot offset value, the entry is invalid. If the particular slot offset value is greater than or equal to the minimum slot offset value, a physical downlink shared channel is received.

公开(公告)号：US20210167905A1

公开(公告)日：2021-06-03

申请号：US17171499

申请日：2021-02-09

Applicant: IDAC Holdings, Inc.

Inventor： Erdem Bala ,  Alphan Sahin ,  Moon-il Lee ,  Mihaela C. Beluri ,  Rui Yang ,  Janet A. Stern-Berkowitz ,  Fengjun Xi ,  Afshin Haghighat

IPC: H04L5/00 ,  H04J11/00 ,  H04W84/04

Abstract: Systems, methods, and instrumentalities are disclosed for physical (PHY) layer multiplexing of different types of traffic in 5G systems. A device may receive a communication. The communication may include a first traffic type. The device may monitor the communication for an indication that the communication includes a second traffic type that is multiplexed with and/or punctures the first traffic type. An indicator received in the communication and detected by the monitoring may indicate where the second traffic type is located in the communication. The first traffic type and the second traffic type may be multiplexed at a resource element (RE) level. For example, a first traffic type may be punctured by a second traffic type at the RE level. The device may decode one or more of the first or second traffic types in the communication based on the indication.

公开(公告)号：US11012186B2

公开(公告)日：2021-05-18

申请号：US16473013

申请日：2018-01-04

Applicant: IDAC Holdings, Inc.

Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi

IPC: H04J11/00 ,  H04L5/00 ,  H04L1/00 ,  H04L29/08

Abstract: Systems, methods, and instrumentalities are disclosed for error check-based synchronization. Physical Broadcast Channel (PBCH) data may be determined. A scrambling (e.g., a first scrambling) of the PBCH data may be scrambled via a sequence (e.g., a first sequence). The first sequence may be based on a cell ID and/or timing information. Error check bits may be attached to the scrambled PBCH data and to the timing information. The error check bits may include one or more cyclic redundancy check (CRC) bits. The scrambled PBCH data, the timing information (e.g., the unscrambled timing information), and/or the attached error check bits may be polar encoded. The polar encoding may result in polar encoded bits. A scrambling (e.g., a second scrambling) of the polar encoded bits may be scrambled via a sequence (e.g., a second sequence). The first sequence and the second sequence may be different. The polar encoded bits may be transmitted.

公开(公告)号：US20200259607A1

公开(公告)日：2020-08-13

申请号：US16088075

申请日：2017-03-29

Applicant: IDAC Holdings, Inc.

Inventor： Fengjun Xi ,  Steven Ferrante ,  Kyle Jung-Lin Pan ,  Alphan Sahin ,  Chunxuan Ye ,  Robert L. Olesen

IPC: H04L5/00 ,  H04L1/00 ,  H04B7/0456 ,  H04B7/10

Abstract: Systems and methods related to increased spectrum efficiency for 5G communications, comprising combining time, frequency, spatial, and signal domains for multi-dimension modulation. In one embodiment, the ability of reconfigurable antenna to change their radiation pattern and/or polarization modes may be used to modulate additional information onto the conventional SM-MIMO transmitted signal. In further embodiments, various combinations of space shift keying, block coding, multi-carrier modulation, and the like may be used to introduce additional dimensions for data modulation and achieve diversity gain.