公开(公告)号：US20230093950A1

公开(公告)日：2023-03-30

申请号：US17795773

申请日：2021-01-28

Applicant: IDAC HOLDINGS, INC.

Inventor： Alpaslan DEMIR ,  Tanbir HAQUE ,  Ravikumar PRAGADA ,  Hussain ELKOTBY ,  Mahmoud ABDELGELIL ,  Patrick CABROL

IPC: H04L27/26

Abstract: A method for initial timing synchronization for a WTRU to communicate with a network includes receiving an in-channel narrowband synchronization sequence from the network to enable initial coarse timing synchronization, determining coarse timing offset and a range between a beam source of a network transmitter and the WTRU, selecting a wideband sequence for fine timing synchronization using the estimated range, transmitting the selected wideband sequence for fine timing synchronization during an uplink timing occasion, receiving from the network a transmission of the selected wideband sequence for fine timing synchronization, and establishing fine timing synchronization between the WTRU and the network using the selected sequence.

公开(公告)号：US20220167301A1

公开(公告)日：2022-05-26

申请号：US17441008

申请日：2020-03-16

Applicant: IDAC Holdings, Inc.

Inventor： Sanjay Goyal ,  Kevin T. WANUGA ,  Amab ROY ,  Alpaslan DEMIR ,  Janet STERN-BERKOWITZ ,  Muhammad FAZILI ,  Mihaela BELURI

IPC: H04W64/00 ,  H04L5/00 ,  H04W74/08 ,  G01S19/01 ,  G01S5/12

Abstract: Methods, apparatuses, systems, etc., directed to performing positioning of a wireless transmit/receive unit (WTRU) while it is in idle mode and/or inactive mode (collectively “idle/inactive mode”) in NR are disclosed herein. Performing positioning, including positioning measurement and/or reporting, in idle/inactive mode may allow for increased positioning accuracy and/or decreased latency of location determination. In various embodiments, a WTRU in idle/inactive mode may transmit a positioning measurement report in various ways, including (i) in a Random-Access Channel (RACH) preamble; (ii) appended to a RACH preamble; and/or (iii) in a Physical Uplink Shared Channel. In various embodiments, a WTRU in idle/inactive mode may transmit uplink-based positioning related reference signals. In various embodiments, a WTRU in an idle/inactive mode may transmit, over a dedicated physical channel, (e.g., downlink) positioning measurement reports and/or reference signals (RSs) for uplink positioning measurements.