公开(公告)号：US20250030587A1

公开(公告)日：2025-01-23

申请号：US18905549

申请日：2024-10-03

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Alphan Sahin ,  Moon-iL Lee ,  Rui Yang

IPC: H04L27/26 ,  H04J13/14

Abstract: A WTRU may comprise circuitry configured to determine a sequence, from a set of sequences comprising 0 0 0 0 0 0 1 1 0 1 1 0, 0 0 0 0 0 1 0 0 0 1 1 1 and 0 0 0 0 0 1 1 1 0 1 1 1. The WTRU may further comprise a transmitter configured to transmit a DMRS, derived from the determined sequence.

公开(公告)号：US12132592B2

公开(公告)日：2024-10-29

申请号：US17419322

申请日：2019-12-31

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Alphan Sahin ,  Moon-il Lee ,  Rui Yang

IPC: H04L5/00 ,  H04J13/14 ,  H04L27/26

CPC classification number: H04L27/2613 ,  H04J13/14 ,  H04L27/262

Abstract: A WTRU may comprise circuitry configured to determine DMRS sequences of length 12, 18 and 24 for PI/2 BPSK DFT-s-OFDM modulation. The sequences are optimized for PAPR, CM, frequency flatness, cross-correlation and for channel estimation (cyclic correlation).

公开(公告)号：US20240349190A1

公开(公告)日：2024-10-17

申请号：US18732093

申请日：2024-06-03

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Xiaofei Wang ,  Li-Hsiang Sun ,  Hanqing Lou ,  Oghenekome Oteri ,  Joseph Levy ,  Rui Yang ,  Alphan Sahin

IPC: H04W52/02

CPC classification number: H04W52/0235

Abstract: Methods and apparatuses are described herein for network discovery. A wireless transmit/receive unit (WTRU) may transmit, to a first access point (AP), via a Primary Connectivity Radio (PCR), a request indicating that on a condition that the WTRU is disassociated from the first AP, the WTRU will enter a wake-up radio (WUR) only discovery mode. The WTRU may receive, from the first AP, via the PCR, a management frame that has WUR discovery elements including an indication of at least one channel used by a second AP. The WTRU may perform disassociation from the first AP. The WTRU may activate a WUR and deactivate the PCR. On a condition that the WTRU is disassociated from the first AP, the WTRU may receive, from the second AP, via the WUR, a WUR frame over the at least one channel to enable the WTRU to activate the PCR to initiate association.

公开(公告)号：US20240349185A1

公开(公告)日：2024-10-17

申请号：US18758017

申请日：2024-06-28

Applicant: Interdigital Patent Holdings, INC.

Inventor： Alphan Sahin ,  Rui Yang ,  Frank La Sita ,  Hanqing Lou ,  Xiaofei Wang ,  Li Hsiang Sun

IPC: H04W52/02 ,  H04L27/04 ,  H04L27/20 ,  H04W84/12

CPC classification number: H04W52/0219 ,  H04L27/04 ,  H04L27/206 ,  H04W84/12

Abstract: An access point (AP) that supports the IEEE 802.11ba protocol may transmit a frame including a physical layer (PHY) preamble to one or more stations (STAs) over a channel. The PHY preamble may include a plurality of repeated modulated legacy signal (L-SIG) fields to spoof a recipient of the frame and protect a wake up signal (WUS) to be subsequently transmitted by the AP. The AP may transmit the WUS to at least a first STA of the one or more STAs, wherein the at least the first STA is a IEEE 802.11ba compliant STA.

公开(公告)号：US20240275446A1

公开(公告)日：2024-08-15

申请号：US18623354

申请日：2024-04-01

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Oghenekome Oteri ,  Hanqing Lou ,  Xiaofei Wang ,  Li-Hsiang Sun ,  Alphan Sahin ,  Rui Yang

IPC: H04B7/06

CPC classification number: H04B7/0617 ,  H04B7/0695

Abstract: Systems, methods, and instrumentalities are disclosed for adaptation of multiple input multiple output (MIMO) mode in mmW Wireless Local Area Network (WLAN) systems. A first station (STA) may receive a mode change request from a second STA. The mode change request may indicate a mode change for a MIMO mode, a polarization mode, and/or an orthogonal frequency-division multiple access (OFDMA) mode. The mode change request may include one or more STA fields. The one or more STA fields may include a STA field associated with the first STA. Each of the one or more STA fields may include a MIMO mode subfield, a polarization mode subfield, and/or an OFDMA mode subfield. The first STA may change the MIMO mode, the polarization mode, and/or the OFDMA mode, for example, based on the mode change request. The first STA may send a mode change response to the second STA.

公开(公告)号：US12063596B2

公开(公告)日：2024-08-13

申请号：US18207513

申请日：2023-06-08

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Alphan Sahin ,  Rui Yang ,  Frank La Sita ,  Hanqing Lou ,  Xiaofei Wang ,  Li-Hsiang Sun

IPC: H04W52/02 ,  H04L27/04 ,  H04L27/20 ,  H04W84/12

CPC classification number: H04W52/0219 ,  H04L27/04 ,  H04L27/206 ,  H04W84/12

Abstract: An access point (AP) that supports the IEEE 802.11ba protocol may transmit a frame including a physical layer (PHY) preamble to one or more stations (STAs) over a channel. The PHY preamble may include a plurality of repeated modulated legacy signal (L-SIG) fields to spoof a recipient of the frame and protect a wake up signal (WUS) to be subsequently transmitted by the AP. The AP may transmit the WUS to at least a first STA of the one or more STAs, wherein the at least the first STA is a IEEE 802.11ba compliant STA.

公开(公告)号：US20230336316A1

公开(公告)日：2023-10-19

申请号：US18338879

申请日：2023-06-21

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Shahrokh Nayeb Nazar ,  Mahmoud Taherzadeh Boroujeni ,  Erdem Bala ,  Alphan Sahin ,  Oghenekome Oteri ,  Rui Yang ,  Frank La Sita ,  Ahmad Reza Hedayat

IPC: H04L5/00 ,  H04L1/1607 ,  H04W72/0453 ,  H04W72/21 ,  H04W72/23

CPC classification number: H04L5/0055 ,  H04L1/1671 ,  H04W72/0453 ,  H04W72/21 ,  H04W72/23

Abstract: A wireless transmit receive unit (WTRU) may be configured to transmit uplink control information such as Hybrid Automatic Retransmission Request (HARQ) Acknowledgement or Negative Acknowledgement (ACK/NACK) using a sequence. The HARQ ACK/NACK may comprise one bit or two bits of information, and the WTRU may use a cyclic shift of the sequence to transmit the HARQ ACK/NACK. The WTRU may use different cyclic shifts of the sequence to transmit different HARQ ACK/NACK values and the cyclic shifts may be separated from each other in a manner to facilitate the transmissions. The WTRU may be further configured to receive, from a physical downlink control channel (PDCCH), an indication of a resource block for transmitting the HARQ ACK/NACK.

公开(公告)号：US11722198B2

公开(公告)日：2023-08-08

申请号：US16099928

申请日：2017-05-11

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Oghenekome Oteri ,  Alphan Sahin ,  Hanqing Lou ,  Joseph S Levy

IPC: H04B7/06 ,  H04B7/10 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0456

CPC classification number: H04B7/0695 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/10

Abstract: Systems and methods are provided to implement features in the IEEE 802.11ad+/ay protocols by utilizing combinations of analog and digital precoding (such as hybrid mmWave precoding) to enable multi-stream/multi-user transmissions. These systems and methods are also suitable for 5G wireless networks, such as found in 3GPP. These systems and methods address performing general precoder design, reducing of beam-training overhead with leak wave antennas, performing single-stage approximate precoding with enhanced SLS for SU-MIMO transmissions (eSLS1), performing multi-stage approximate precoding with enhanced SLS for SU-MIMO transmissions (eSLS2), and performing exact precoding with enhanced SLS for SU-MIMO transmissions.

公开(公告)号：US11716687B2

公开(公告)日：2023-08-01

申请号：US17040728

申请日：2019-03-22

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Alphan Sahin ,  Rui Yang ,  Frank La Sita ,  Hanqing Lou ,  Xiaofei Wang ,  Li Hsiang Sun

IPC: H04W52/02 ,  H04L27/04 ,  H04L27/20 ,  H04W84/12

CPC classification number: H04W52/0219 ,  H04L27/04 ,  H04L27/206 ,  H04W84/12

Abstract: An access point (AP) that supports the IEEE 802.11ba protocol may transmit a frame including a physical layer (PHY) preamble to one or more stations (STAs) over a channel. The PHY preamble may include a plurality of repeated modulated legacy signal (L-SIG) fields to spoof a recipient of the frame and protect a wake up signal (WUS) to be subsequently transmitted by the AP. The AP may transmit the WUS to at least a first STA of the one or more STAs, wherein the at least the first STA is a IEEE 802.11ba compliant STA.

公开(公告)号：US11689272B2

公开(公告)日：2023-06-27

申请号：US17230473

申请日：2021-04-14

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Oghenekome Oteri ,  Hanqing Lou ,  Alphan Sahin ,  Rui Yang ,  Cen Lin ,  Xiaofei Wang ,  Li Hsiang Sun

IPC: H04B7/06

CPC classification number: H04B7/0695 ,  H04B7/0636 ,  H04B7/0645 ,  H04B7/0697

Abstract: Systems and methods for multidimensional beam refinement procedures and signaling for millimeter wave WLANs. In some embodiments, there are multi-dimensional enhanced beam refinement protocol MAC and PHY frame designs that extend the MAC packet and the PPDU format with or without backwards compatibility. The multiple dimensions may be supported jointly or separately. In other embodiments, the increased data signaled in the eBRP frame designs may be more efficiently signaled with reduced BRP frame sizes, such as through a training type dependent BRP minimum duration selection procedure or use of null data packet BRP frames. In further embodiments, the maximum duration of the interframe spacing between BPR packets may be varied to improve the efficiency of BRP operation.