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：US12255850B2

公开(公告)日：2025-03-18

申请号：US15542140

申请日：2016-01-08

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Oghenekome Oteri ,  Yuan Sheng Jin ,  Hanqing Lou ,  Xiaofei Wang ,  Robert L. Olesen

IPC: H04L5/00 ,  H04W24/02 ,  H04W72/12 ,  H04W72/541 ,  H04W84/12 ,  H04W88/06

Abstract: An access point (AP) may determine that a basic service set (BSS) color of an overlapping BSS (OBSS) associated with a neighboring AP is a same color as a BSS color of the AP. A BSS color change announcement message may be generated having BSS color information and a color switching time. The BSS color information may indicate a BSS color for the AP and the color switching time may indicate a time until the AP switches to the BSS color.

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：US12244328B2

公开(公告)日：2025-03-04

申请号：US18415565

申请日：2024-01-17

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Fengjun Xi ,  Yuan Sheng Jin ,  Pengfei Xia ,  Oghenekome Oteri ,  Hanqing Lou ,  Nirav B. Shah ,  Robert L. Olesen

IPC: H04B1/02 ,  H03M13/27 ,  H04L1/00 ,  H04L1/16 ,  H04L1/1607 ,  H04L1/20 ,  H04L5/00 ,  H04W84/12

Abstract: A wireless transmit/receive unit (WTRU) may receive a constellation symbol that includes indications that each are associated with a respective WTRU of a plurality of WTRUs. The WTRU may determine that a first weight associated with a first indication of the indications is different than a second weight associated with a second indication of the indications. The indications may comprise indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).

公开(公告)号：US20250070836A1

公开(公告)日：2025-02-27

申请号：US18914901

申请日：2024-10-14

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Yuan Sheng Jin ,  Fengjun Xi ,  Pengfei Xia ,  Nirav B. Shah ,  Hanqing Lou ,  Robert L. Olesen ,  Oghenekome Oteri

IPC: H04B7/06 ,  H04B7/0452 ,  H04L25/02 ,  H04L25/03 ,  H04L27/26 ,  H04W84/12

Abstract: Systems, methods and instrumentalities are disclosed to enable time domain null-forming. An access point (AP) may be configured to send a channel training request to a station (STA). The AP may be configured to receive a channel training packet in response to the channel training request. The channel training packet may include a legacy long training field (LTF). The AP may estimate the channel. The channel estimation may be computed using the legacy LTF. The AP may compute a null-forming vector using the channel estimation. The AP may use the null-forming vector to precode the entire packet.

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：US20250015959A1

公开(公告)日：2025-01-09

申请号：US18888944

申请日：2024-09-18

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Xiaofei Wang ,  Hanqing Lou ,  Monisha Ghosh ,  Sudheer A. Grandhi

IPC: H04L5/00 ,  H04L1/00 ,  H04L1/1607 ,  H04L1/1829

Abstract: A method performed by a STA may comprise transmitting a first negotiation message to an AP and receiving a second negotiation message from the AP. The first negotiation message and the second negotiation message may negotiate a block acknowledgement agreement between the STA and the AP. The method may further comprise receiving a data unit, from the AP, the data unit having a duration field indicating a duration of a block-ACK frame. The duration of the block-ACK frame may be determined based on the negotiated block ACK agreement. A block-ACK frame may be transmitted within the duration indicated by the duration field.

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：US20240430802A1

公开(公告)日：2024-12-26

申请号：US18823088

申请日：2024-09-03

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Xiaofei Wang ,  Oghenekome Oteri ,  Joseph S. Levy ,  Hanqing Lou ,  Li-Hsiang Sun

IPC: H04W52/02 ,  H04W48/08 ,  H04W48/16 ,  H04W84/12

Abstract: Methods for transmitting and receiving enhanced broadcast transmissions are provided herein. A method performed by a receiving station (STA) may include receiving, from a transmitting STA, a frame including a broadcast service element The broadcast service element includes one or more fields associated with enhanced broadcast service (eBCS) traffic streams that may be provided by the STA. At least one of the fields comprises an identifier associated with eBCS traffic streams, a field indicating whether negotiation with the transmitting STA is required to receive data of the eBCS traffic streams, and scheduling information for receiving a broadcast transmission including the data of the eBCS traffic streams. The method includes receiving, based on the scheduling information, the broadcast transmission including the identifier associated with the eBCS traffic streams and data of the eBCS traffic streams.

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.