公开(公告)号：US11553526B2

公开(公告)日：2023-01-10

申请号：US17265863

申请日：2019-08-08

Applicant: IDAC HOLDINGS, INC.

Inventor： Hanging Lou ,  Ahmad Reza Hedayat ,  Li-Hsiang Sun ,  Oghenekome Oteri ,  Rui Yang

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

Abstract: Receiver assisted channel access may be used during a channel occupancy time (COT). A wireless transmit/receive unit (WTRU) that is a member of a first group may receive a preamble in a first time slot set, and determine a group associated with the first time slot. On a condition that the group associated with the first time slot set is the first group, the WTRU may monitor the channel for a request-to-send (RTS) signal in the first slot set. On a condition that the RTS signal is received, the WTRU may perform listen-before-talk (LBT) on the channel. On a condition that the LBT is successful, the WTRU may transmit a clear-to-send (CTS) on the channel and access the channel in the first time slot. On a condition that the LBT is unsuccessful, the WTRU may not access the channel in the first time slot set.

公开(公告)号：US11457475B2

公开(公告)日：2022-09-27

申请号：US16967887

申请日：2019-02-07

Applicant: IDAC Holdings, Inc.

Inventor： Oghenekome Oteri ,  Ahmad Reza Hedayat ,  Hanging Lou ,  Rui Yang ,  Janet A. Stern-Berkowitz ,  Moon-il Lee

IPC: H04W74/08 ,  H04L5/00 ,  H04W16/14 ,  H04W24/08 ,  H04W72/04

Abstract: An LBT method and apparatus are disclosed for a WTRU and gNB. A method may comprise receiving a gNB beam direction schedule and an LBT measurement configuration. The WTRU may switch a receiver so as to receive a beam based on the beam direction schedule and monitor for a DCI. The WTRU may be configured to determine whether there is a transmission for the WTRU and if there is, the transmission may be received. The transmission may be a DCI for an uplink transmission of the WTRU. A WTRU may be configured to receive the gNB beam direction schedule and the LBT measurement configuration at a start of an MCOT.