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：US11382136B2

公开(公告)日：2022-07-05

申请号：US16582305

申请日：2019-09-25

Applicant: IDAC Holdings, Inc.

Inventor： Tao Deng ,  Philip J. Pietraski ,  Ravikumar V. Pragada ,  Yugeswar Deenoo ,  Janet A. Stern-Berkowitz ,  Moon-il Lee ,  Mihaela C. Beluri ,  Kyle Jung-Lin Pan

IPC: H04W4/00 ,  H04W74/08 ,  H04B7/06 ,  H04W72/04 ,  H04W74/00 ,  H04L5/00 ,  H04L27/26 ,  H04W24/08 ,  H04W24/10 ,  H04W72/14 ,  H04W52/14 ,  H04W80/02

Abstract: Methods, devices and systems are provided for performing a random access (RA) procedure. A wireless transmit/receive unit (WTRU) may be configured to receive RA resource sets, where each of the RA resource sets is associated with a node-B directional beam, select an RA resource set from among the RA resource sets, and initiate an RA procedure based on the selected RA resource set. The RA procedure may include selecting multiple preambles which include a preamble for each resource of a plurality of resources corresponding to the selected RA resource set. The WTRU may be configured to sequentially transmit the selected multiple preambles in sequential RA transmissions, and may be configured to receive, from a node-B, in response to the RA transmissions, at least one RA response (RAR), where each of the received at least one RAR corresponds to one of the transmitted multiple preambles.

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：US11108500B2

公开(公告)日：2021-08-31

申请号：US16315234

申请日：2017-07-01

Applicant: IDAC Holdings, Inc.

Inventor： Philip J. Pietraski ,  Arnab Roy ,  Kyle Jung-Lin Pan ,  Alpaslan Demir ,  Muhammad U. Fazili ,  William E. Lawton ,  Mohamed Abou El Seoud ,  Kevin T. Wanuga ,  Ravikumar V. Pragada

IPC: H04L1/00 ,  H04L12/801 ,  H04L12/851 ,  H04L12/841 ,  H03M13/11 ,  H04B7/06 ,  H04L5/00 ,  H04L27/26 ,  H04W80/02 ,  H04W28/02

Abstract: Latency reduction by fast forward (FF) in multi-hop communication device and/or systems is disclosed. Packets may be received and forwarded using a codeword (CW)-based approach with and/or without per-CW CRC. A FF session may have a flow ID and packets may have sequence numbers. Packets targeted for FF may be divided into independently decodable CWs that may be transmitted in the next hop, for example, as soon as the destination is determined without waiting for an entire packet's arrival and/or for CRC verification. Low latency (e.g. FF) traffic may be indicated. CW-based FF may be extensible for an e2e RAN path from a WTRU to the last access node in a RAN. Intermediate metrics, a packet CRC and/or a per-CW CRC may be utilized for data integrity. HARQ and/or CW retransmission procedures may be implemented between network nodes for error handling.

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：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.

公开(公告)号：US20200145069A1

公开(公告)日：2020-05-07

申请号：US16088363

申请日：2017-03-29

Applicant: IDAC Holdings, Inc.

Inventor： Steven Ferrante ,  Fengjun Xi ,  Rui Yang ,  Chunxuan Ye ,  Kyle Jung-Lin Pan

IPC: H04B7/06 ,  H04B7/10 ,  H04B7/0456

Abstract: Systems and methods described herein are provided for radiation pattern and modulation (RPM) based on channel-state information (CSI). The method may comprise receiving a set of bits; dividing the set of bits into at least three groups, wherein at least one group is size limited by a diversity order and selection factor applied by a CSI controller; mapping the groups to distinct control signals; generating a modulated RF signal and selecting at least one configurable antenna and a configuration of said at least one antenna based on the control signals; and transmitting the modulated RF signal through the at least one configured antenna.

公开(公告)号：US20200059957A1

公开(公告)日：2020-02-20

申请号：US16542367

申请日：2019-08-16

Applicant: IDAC Holdings, Inc.

Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi ,  HaoHao Qin

IPC: H04W74/00 ,  H04W74/08 ,  H04W48/16 ,  H04L5/00 ,  H04W72/12

Abstract: Random access may be provided for integrated access and backhaul (IAB) for New Radio (NR). A wireless transmit/receive unit may send (e.g., to a gNB) a preamble in a random access occasion (RO). One or more of the preamble or an RO resource partition of the RO may indicate a node type of the WTRU. The WTRU may receive (e.g., from the gNB) a physical downlink control channel (PDCCH) that indicates (e.g., includes) one or more random access responses (RARs). The WTRU may determine that the PDCCH indicates a WTRU RAR and an integrated access and backhaul (IAB) node RAR. If the sent node type is a WTRU node type, the WTRU may receive (e.g., from the gNB) the WTRU RAR at a first time and frequency location indicated by the PDCCH.