公开(公告)号：US12155450B2

公开(公告)日：2024-11-26

申请号：US18197198

申请日：2023-05-15

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi ,  Afshin Haghighat ,  Oghenekome Oteri ,  Chunxuan Ye ,  Frank La Sita ,  Robert Olesen ,  Moon-il Lee

IPC: H04B7/08 ,  H04B7/06 ,  H04B17/327 ,  H04W24/10 ,  H04B7/0452

Abstract: A WTRU may include a memory and a processor. The processor may be configured to receive beam grouping information from a gNB or transmission and reception point (TRP). The beam grouping information may indicate a group of beams that the WTRU may report using group-based reporting. The group-based reporting may be a reduced level of reporting compared to a beam-based reporting. The group-based report may include measurement information for a representative beam. The representative beam may be one of the beams in the group or represents an average of the beams in the group. Alternatively, the representative beam may be a beam that has a maximum measurement value compared to other beams in the group. The group-based report may include a reference signal received power (RSRP) for the representative beam and a differential RSRP for each additional beamin the beam group.

公开(公告)号：US20240214039A1

公开(公告)日：2024-06-27

申请号：US18596413

申请日：2024-03-05

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Hanqing Lou ,  Oghenekome Oteri ,  Pengfei Xia ,  Robert Olesen

IPC: H04B7/0452 ,  H04B7/024 ,  H04B7/06 ,  H04L1/06 ,  H04L5/00 ,  H04L27/26 ,  H04W84/12

CPC classification number: H04B7/0452 ,  H04B7/0617 ,  H04L1/0612 ,  H04L1/0681 ,  H04L5/0094 ,  H04L27/26025 ,  H04L27/2666 ,  H04B7/024 ,  H04L5/0048 ,  H04W84/12

Abstract: A method performed by a STA may comprise transmitting an HE LTF of a data unit. The HE LTF may have a number of symbols based on a number of space-time streams utilized for the data unit. The HE LTF may be transmitted on a subset of subcarriers of a 20 MHz channel, a 40 MHZ channel or an 80 MHz channel.

公开(公告)号：US11949471B2

公开(公告)日：2024-04-02

申请号：US17568367

申请日：2022-01-04

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Hanqing Lou ,  Oghenekome Oteri ,  Pengfei Xia ,  Robert Olesen

IPC: H04L27/26 ,  H04B7/0452 ,  H04B7/06 ,  H04L1/06 ,  H04L5/00 ,  H04B7/024 ,  H04W84/12

CPC classification number: H04B7/0452 ,  H04B7/0617 ,  H04L1/0612 ,  H04L1/0681 ,  H04L5/0094 ,  H04L27/26025 ,  H04L27/2666 ,  H04B7/024 ,  H04L5/0048 ,  H04W84/12

Abstract: A method performed by a STA may comprise transmitting an HE LTF of a data unit. The HE LTF may have a number of symbols based on a number of space-time streams utilized for the data unit. The HE LTF may be transmitted on a subset of subcarriers of a 20 MHz channel, a 40 MHz channel or an 80 MHz channel.

公开(公告)号：US20240089866A1

公开(公告)日：2024-03-14

申请号：US18307965

申请日：2023-04-27

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Oghenekome Oteri ,  Pengfei Xia ,  Xiaofei Wang ,  Hanqing Lou ,  Monisha Ghosh ,  Robert Olesen ,  Nirav B Shah ,  Frank LaSita

IPC: H04W52/24 ,  H04W52/12 ,  H04W74/08

CPC classification number: H04W52/243 ,  H04W52/12 ,  H04W74/0808 ,  H04W84/12

Abstract: Methods and apparatuses are described herein for adapting clear channel assessment (CCA) thresholds with or without Transmit Power Control (TPC) are disclosed. An IEEE 802.11 station (STA) may dynamically calculate a STA specific transmit power control (TPC) value and a STA specific clear channel assessment (CCA) value based on a target TPC parameter and a target CCA parameter. The target TPC parameter and the target CCA parameter may be received from an IEEE 802.11 cluster head configured to control TPC and CCA for a plurality of STAs associated with the BSS. The target TPC parameter and the target CCA parameter also may be related. The STA may then determine whether a carrier sense multiple access (CSMA) wireless medium of a wireless local area network (WLAN) basic service set (BSS) is occupied or idle based on the STA specific CCA value.

公开(公告)号：US11678318B2

公开(公告)日：2023-06-13

申请号：US17719023

申请日：2022-04-12

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Pengfei Xia ,  Oghenekome Oteri ,  Hanqing Lou ,  Nirav B. Shah ,  Monisha Ghosh ,  Robert Olesen

IPC: H04B7/0417 ,  H04B7/0491 ,  H04B7/06 ,  H04L1/00 ,  H04W16/28 ,  H04W84/12 ,  H04W72/044

CPC classification number: H04W72/046 ,  H04B7/0417 ,  H04B7/0491 ,  H04B7/063 ,  H04B7/0617 ,  H04L1/00 ,  H04W16/28

Abstract: A method and apparatus may be used to support coordinated and cooperative sectorized transmissions. Power control and clear channel assessment for sectorized transmissions may be used, along with sectorized beacon and associated procedures. Transmissions in a network may be protected by a first access point (AP) sending an omni-directional transmission and a beamformed or sectorized transmission to a station (STA), an overlapping basic service set (OBSS) confirming a spatially orthogonal (SO) condition based on the omni-directional transmission, and a second AP monitoring the omni-directional transmission and confirming the SO condition. The STA may be configured to receive a request-to-send (RTS) frame indicating data is available for transmission, and transmit a cooperative sectorized (CS) clear-to-send (CTS) frame indicating an ability for multiple AP reception.

公开(公告)号：US11968041B2

公开(公告)日：2024-04-23

申请号：US17737616

申请日：2022-05-05

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi ,  Robert Olesen ,  Chunxuan Ye ,  Janet Stern-Berkowitz

IPC: H04L1/00 ,  H03M13/09 ,  H04B7/06 ,  H04W74/0833 ,  H04W48/10

CPC classification number: H04L1/0067 ,  H03M13/09 ,  H04B7/0617 ,  H04B7/0623 ,  H04B7/0695 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/007 ,  H04L1/0072 ,  H04W74/0833 ,  H04W48/10

Abstract: A method for transmitting system information on a PBCH is described herein. A transmission/reception point (TRP) may generate a concatenated master information block (MIB) transport block that includes information bits associated with system bandwidth information, timing information, system frame number (SFN), a beam sweeping configuration, and a control resource set (CORESET). The TRP may then attach at least 16 cyclic redundancy check (CRC) bits to the concatenated MIB and then prioritize the concatenated MIB and the at least 16 CRC bits based on content. The TRP may then perform channel coding of the prioritized concatenated MIB and the at least 16 CRC bits to produce coded bits using at least one polar encoder with a coding rate that is less than 1/3, perform rate matching via repetition on the coded bits, and then transmit the rate matched, coded bits on the PBCH of a radio frame.

公开(公告)号：US11838161B2

公开(公告)日：2023-12-05

申请号：US17346616

申请日：2021-06-14

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Alphan Sahin ,  Rui Yang ,  Hanqing Lou ,  Oghenekome Oteri ,  Robert Olesen ,  Fengjun Xi

IPC: H04L27/26 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0452 ,  H04L25/02 ,  H04B7/0413

CPC classification number: H04L27/2613 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0626 ,  H04L5/0023 ,  H04L5/0053 ,  H04L25/024 ,  H04L25/0204

Abstract: Methods, apparatuses, and systems to enable a channel estimation of more than one channel for Multi-Input Multi-Output (MIMO) communications in a wireless network is provided. The method includes determining a first set of complex numbers comprising first channel estimation signal associated with a first channel, determining a second set of complex numbers comprising second channel estimation signal associated with a second channel, and transmitting the first set of complex numbers and the second set of complex numbers via a physical layer (PHY) frame, wherein the second set of complex numbers are complex conjugates of the first set of complex numbers.

公开(公告)号：US11750323B2

公开(公告)日：2023-09-05

申请号：US17474971

申请日：2021-09-14

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Hanging Lou ,  Oghenekome Oteri ,  Rui Yang ,  Robert Olesen ,  Guodong Zhang

IPC: H04L1/00 ,  H04L1/18 ,  H04L29/12 ,  H04W84/12 ,  H04L101/622

CPC classification number: H04L1/0072 ,  H04L1/0079 ,  H04L1/18 ,  H04L2101/622 ,  H04W84/12

Abstract: A method performed by a STA may comprise receiving data of a MU-HE-PPDU, from an AP. The MU-HE-PPDU may comprise a HE-SIG-A field, a first HE-SIG-B portion and a second HE-SIG-B portion. The first HE-SIG-B portion may be received on a first channel and the second HE-SIG-B portion may be received on a second channel which is different than the first channel. The first HE-SIG-B portion may include one or more STA identifiers.

公开(公告)号：US20210306183A1

公开(公告)日：2021-09-30

申请号：US17346616

申请日：2021-06-14

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Alphan Sahin ,  Rui Yang ,  Hanqing Lou ,  Oghenekome Oteri ,  Robert Olesen ,  Fengjun Xi

IPC: H04L25/02 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0452 ,  H04L27/26 ,  H04B7/0413

Abstract: Methods, apparatuses, and systems to enable a channel estimation of more than one channel for Multi-Input Multi-Output (MIMO) communications in a wireless network is provided. The method includes determining a first set of complex numbers comprising first channel estimation signal associated with a first channel, determining a second set of complex numbers comprising second channel estimation signal associated with a second channel, and transmitting the first set of complex numbers and the second set of complex numbers via a physical layer (PHY) frame, wherein the second set of complex numbers are complex conjugates of the first set of complex numbers.

公开(公告)号：US12232044B2

公开(公告)日：2025-02-18

申请号：US18233940

申请日：2023-08-15

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Hanqing Lou ,  Oghenekome Oteri ,  Guodong Zhang ,  Robert Olesen ,  Rui Yang

IPC: H04W52/10 ,  H04W52/14 ,  H04W52/24 ,  H04W74/00 ,  H04B17/318 ,  H04W52/22 ,  H04W84/12 ,  H04W88/02

Abstract: Methods and systems for operation in a WLAN are provided. Methods and systems for a transmit power control (TPC) scheme are disclosed. In an embodiment, an access point (AP) may send a trigger frame to one or more stations (STAs) for synchronizing and scheduling uplink (UL) multi-user (MU) transmissions. The trigger frame may contain an open-loop power control index 1 and a power adjustment index 2. The one or more STAs may estimate pathloss using an indicated AP transmit power and received power to set a baseline transmit power. The one or more STAs may adjust their transmit power in the UL transmission period to be the indicated target receive power at the AP.