公开(公告)号：US12273157B2

公开(公告)日：2025-04-08

申请号：US17437265

申请日：2020-03-06

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Hanqing Lou ,  Xiaofei Wang ,  Li-Hsiang Sun ,  Oghenekome Oteri ,  Rui Yang ,  Joseph S. Levy ,  Frank La Sita

IPC: H04B7/024 ,  H04B7/06 ,  H04B17/336

Abstract: A method for multiple access point (AP) transmission is disclosed. The method comprises receiving a repetition beacon from each of a plurality of APs, each received repetition beacon comprising a common information part and an AP-specific information part; decoding at least a subset of the received common information parts to obtain a first parameter; decoding the received AP-specific information parts to obtain a second parameter for each of the plurality of APs; performing a calculation based on the first parameter, the obtained second parameters and a number of the plurality of APs to obtain a calculation result; and transmitting a feedback based on the calculation result to the plurality of AP.

公开(公告)号：US12256392B2

公开(公告)日：2025-03-18

申请号：US17610342

申请日：2020-05-01

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W72/21 ,  H04W72/543 ,  H04W72/56 ,  H04W74/00 ,  H04W74/06 ,  H04W84/12

Abstract: Techniques, devices and systems are disclosed for generating a resource request poll comprising at least one response criteria, transmitting the resource request poll, receiving a resource request report from STAs that meet at least one response criteria. A trigger frame may be transmitted to the at least one STA based on the resource request report from the at least one STA. The response criteria may include at least one of a NFRP, a UL access type, a delay bound, an NDP feedback report AC, a number of indicated AID bits, an AID range, an information requested, a number of bits to be included in NDP feedback report or preamble, number of LTFs to be included in the NDP feedback report or preamble, and a number of bits to be included in NDP feedback report or preamble per LTF or per N LTF symbol.

公开(公告)号：US12250053B2

公开(公告)日：2025-03-11

申请号：US18234150

申请日：2023-08-15

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04B7/06 ,  H04B7/0452 ,  H04W74/08 ,  H04W74/0816 ,  H04W84/12

Abstract: Methods for multiple input-multiple output (MIMO) transmission are provided herein. A method may include sensing, using at least one of a plurality of antenna chains, radio frequency (RF) energy on a channel in a first time duration and may indicate the channel is busy. RF energy may be sensed on the channel using the at least one of the plurality of antenna chains in a second time duration and may indicate the channel is not busy. A method may include sending energy level sensed during the second time duration, a frame using the at least one of the plurality of antenna chains. The frame may indicate timing information associated with a MIMO transmission. The MIMO transmission may be sent using the indicated timing information and the at least one of the plurality of antenna chains.

公开(公告)号：US12244420B2

公开(公告)日：2025-03-04

申请号：US18377684

申请日：2023-10-06

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Alphan Sahin ,  Rui Yang ,  Erdem Bala ,  Shahrokh Nayeb Nazar

IPC: H04L1/1607 ,  H04L5/00 ,  H04L27/26 ,  H04W16/14 ,  H04W72/21

Abstract: A wireless transmit/receive unit (WTRU) may receive a downlink transmission and send a physical uplink control channel (PUCCH) transmission in each resource block (RB) of an interlace of a plurality of RBs in an active bandwidth part (BWP). A base sequence is mapped to the PUCCH transmission repetitively, once to each RB of the plurality of RBs of the interlace, using a different cyclic shift of the base sequence for each RB. Each different cyclic shift of the base sequence in the PUCCH transmission to each RB is a function of a RB index of the respective RB. The PUCCH transmission indicates either an acknowledgement (ACK) or a negative ACK (NACK) of the received downlink transmission.

公开(公告)号：US20250024370A1

公开(公告)日：2025-01-16

申请号：US18902579

申请日：2024-09-30

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04W52/02 ,  H04W28/16 ,  H04W84/12

Abstract: Procedures and mechanisms for narrowband multi-channel transmission for wakeup radio (WUR) operation are disclosed. A station (STA) operating in WUR mode may have its a primary connectivity radio (PCR) turned off and its WUR turned and operating according to previously negotiated WUR operating parameters. The STA may monitor, for WUR beacons and frames over a first WUR channel, and determine that the first WUR channel does not support reliable transmission based on no beacons being received within a first duration. The STA may turn off the WUR, and turn on the PCR to send a first short WUR frame including a wakeup reason, and receive a second short WUR frame with a WUR channel assignment. The STA may turn off the PCR, turn on the WUR, and monitor for WUR signals on a second WUR channel according to the WUR channel assignment and the previously negotiated WUR operating parameters.

公开(公告)号：US12192007B2

公开(公告)日：2025-01-07

申请号：US17266785

申请日：2019-08-08

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Ahmad Reza Hedayat ,  Shahrokh Nayeb Nazar ,  Oghenekome Oteri ,  Hanqing Lou ,  Rui Yang

IPC: H04L1/1812 ,  H04L1/1867 ,  H04W72/0446 ,  H04W74/00 ,  H04W74/0816

Abstract: Systems, methods, and devices for efficient and robust handling of acknowledgements in new radio unlicensed bands (NR-U) environments. A wireless transmit receive unit (WTRU) may receive control information and a data transmission from a gNB in a first interval (i.e., transport block or channel occupancy time), wherein the control information may include an indication of uplink resources. The data transmission may require some sort of acknowledgement (i.e., HARQ feedback). The WTRU may attempt to transmit the acknowledgement in the indicated uplink resources, but the gNB may not receive the acknowledgement. The WTRU may receive control information and a data transmission from the gNB in a second interval, including an indication to aggregate any previously unsuccessful acknowledgement transmissions. The WTRU may transmit an aggregated acknowledgement including previous unsuccessful acknowledgements and any additional acknowledgements from the current interval. In some cases, look-before-talk procedures may be used.

公开(公告)号：US20240414043A1

公开(公告)日：2024-12-12

申请号：US18812630

申请日：2024-08-22

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04L27/26 ,  H04L5/00

Abstract: Methods and apparatuses for coexistence of signaling of different 802.11 protocols are provided herein. A station (STA) or access point (AP) may transmit a protocol data unit (PDU) of a first 802.11 protocol and a PDU of a second 802.11 protocol. The transmission of the PDU of the first 802.11 protocol and the transmission of the PDU of the second 802.11 protocol may be at least quasi-orthogonal.

公开(公告)号：US20240356659A1

公开(公告)日：2024-10-24

申请号：US18758988

申请日：2024-06-28

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Robert L. Olesen ,  Rui Yang ,  Moon-il Lee ,  Alphan Sahin ,  Hanqing Lou ,  Fengjun Xi ,  Frank La Sita ,  Byung K. Yi ,  Janet A. Stern-Berkowitz

IPC: H04B15/02 ,  H04B1/10 ,  H04B1/403 ,  H04B7/0413 ,  H04B15/00 ,  H04B17/318 ,  H04W16/14 ,  H04W88/06

CPC classification number: H04B15/02 ,  H04B1/10 ,  H04B1/1027 ,  H04B1/406 ,  H04B7/0413 ,  H04B15/00 ,  H04B17/318 ,  H04W16/14 ,  H04W88/06

Abstract: Systems, methods, and instrumentalities are disclosed for transmitting a message. For example, a first radio access technology (RAT) and/or a second RAT may be determined. The first RAT may be determined for reception of data. The second RAT may be determined for the reception of the data, perhaps for example based on an indication received via the first RAT. The data may be received via a first node associated with the first RAT and a second node associated with the second RAT.

公开(公告)号：US12120742B2

公开(公告)日：2024-10-15

申请号：US18092684

申请日：2023-01-03

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Ahmad Reza Hedayat ,  Oghenekome Oteri ,  Hanqing Lou ,  Mahmoud Taherzadeh Boroujeni ,  Xiaofei Wang ,  Rui Yang ,  Shahrokh Nayeb Nazar

IPC: H04W74/0816 ,  H04L5/00 ,  H04W16/14 ,  H04W52/34 ,  H04W72/0446 ,  H04W72/23

CPC classification number: H04W74/0816 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0082 ,  H04L5/0091 ,  H04W52/34 ,  H04W72/0446 ,  H04W72/23 ,  H04W16/14

Abstract: Methods, systems, and devices for channel access and listen-before-talk approaches for new radio operation in unlicensed bands and/or licensed bands. A gNB and a wireless transmit/receive unit (WTRU) may operate in unlicensed spectrum. The gNB may perform listen-before-talk operation, and when successful, may send a downlink control channel with a slot format indication (SFI) to the WTRU. There may also be a handshaking procedure with an exchange of a request to transmit (RTT) and a request to receive (RTR). Prior to receiving the downlink channel, the WTRU may monitor search spaces at a first level, and once the downlink channel is received the WTRU may monitor search spaces at a second level. At the end of transmission, the WTRU may revert back to monitoring search spaces at the first level. In one example, the first level may be a mini-slot level and the second level may be a slot level.

公开(公告)号：US20240322962A1

公开(公告)日：2024-09-26

申请号：US18732364

申请日：2024-06-03

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Hanqing Lou ,  Li-Hsiang Sun ,  Rui Yang ,  Joseph S. Levy ,  Xiaofei Wang

IPC: H04L5/00 ,  H04W24/10

CPC classification number: H04L5/0046 ,  H04L5/006 ,  H04W24/10

Abstract: Methods and apparatuses are described herein for feedback based midamble adaptation. For example, a first station (STA) may transmit, to a second STA, a request frame that includes an indicator indicating a request for midamble information. The first STA may receive, from the second STA, a response frame that includes the midamble information determined by the second STA based on one or more channel measurements associated with the second STA. The midamble information may include a midamble report, a Doppler measurement report, or the like. The midamble report or the Doppler measurement report may include at least one of a midamble periodicity, a mobility/Doppler level, or the like. Based on the midamble information, the first STA may generate a physical layer convergence procedure (PLCP) protocol data unit (PPDU) that includes at least one midamble within a data portion of the PPDU.