公开(公告)号：US11750251B2

公开(公告)日：2023-09-05

申请号：US17890721

申请日：2022-08-18

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Hanging Lou ,  Li Hsiang Sun ,  Oghenekome Oteri ,  Rui Yang

IPC: H04W4/00 ,  H04B7/0452 ,  H04B7/06 ,  H04L27/26 ,  H04W72/23 ,  H04W84/12

CPC classification number: H04B7/0452 ,  H04B7/0617 ,  H04L27/2601 ,  H04W72/23 ,  H04W84/12

Abstract: Methods and apparatus are described herein for dynamic allocation of multiple channels and data streams for multi-channel transmission and multiple-input and multiple-output (MIMO). For example, a station (STA) may receive an enhanced poll (EPoll) frame that includes a time offset, a channel offset and antenna/sector settings from an access point (AP). The STA may transmit, based on the received EPoll frame, an enhanced service period request (ESPR) frame that includes a MIMO control field and a multi-channel control field. The MIMO control field may indicate whether the STA supports MIMO transmission. The multi-channel control field may indicate whether the STA supports multi-channel transmission. Upon transmitting the ESPR frame, the STA may receive an enhanced grant frame from the AP. The enhanced grant frame may include an antenna configuration and a multi-channel allocation to enable the STA to perform the MIMO transmission and the multi-channel transmission.

公开(公告)号：US11503613B2

公开(公告)日：2022-11-15

申请号：US17052234

申请日：2019-05-03

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04B17/309 ,  H04W72/08

Abstract: Methods and apparatus for interference discovery for full-duplex data transmission are provided. In an embodiment, a station (STA) receives a full-duplex request message from an access point (AP). The STA transmits a first full-duplex response message to the AP. The STA listens for a second full-duplex response message transmitted from a second STA to the AP. The STA determines a received power of the second full-duplex response message from the second STA to the AP. The STA receives a first trigger message from the AP. The first trigger message includes information to perform full-duplex data transmission. The STA transmits data to the AP in response to the first trigger message. The STA transmits interference information to the AP. The interference information is based on the determined received power.

公开(公告)号：US11317436B2

公开(公告)日：2022-04-26

申请号：US16433239

申请日：2019-06-06

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Hanging Lou ,  Guodong Zhang ,  Robert L. Olesen ,  Xiaofei Wang

IPC: H04W4/00 ,  H04W74/00 ,  H04W80/00 ,  H04B7/0452

Abstract: Methods, devices and systems are provided for performing for multi-user (MU) transmission. A wireless transmit/receive unit (WTRU) may be configured to receive a frame, decode the received frame and determine whether the received frame is a null data packet (NDP) multi-user (MU) media access control (MAC) physical layer convergence protocol (PLCP) protocol data unit (PPDU) (NDP MU MAC PPDU) based on meeting an NDP condition. The NDP MU MAC PPDU may correspond to an MU transmission and may include a PLCP header which includes an NDP signal (SIG) field having MU control information. Based on the received frame meeting the NDP condition, the WTRU may be further configured to process the NDP SIG field, generate a response based on the NDP SIG field and the MU control information, and transmit the response.

公开(公告)号：US11191104B2

公开(公告)日：2021-11-30

申请号：US16895775

申请日：2020-06-08

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Oghenekome Oteri ,  Hanging Lou ,  Monisha Ghosh ,  Robert L. Olesen ,  Frank La Sita ,  Xiaofei Wang ,  Pengfei Xia ,  Nirav B. Shah

IPC: H04W74/08 ,  H04W4/08 ,  H04W24/02 ,  H04W64/00 ,  H04W84/12

Abstract: Systems, methods, and instrumentalities are described to implement an interference management method in WLAN. An access point (AP) or an inter-BSS coordinator (IBC) may identify a station (STA) associated with a first basic service set (BSS) as an edge STA or a non-edge STA. The AP or the IBC may group the edge STA into an edge group and a non-edge STA into a non-edge group. The AP or the IBC may receive information associated with a second BSS. The AP or the IBC may coordinate access of the edge group and/or the non-edge group. The access may be coordinated to minimize interference of the edge STA. The access may be based at least on the received information associated with the second BSS. The AP or the IBC may adjust transmit power of a plurality of STAs identified as edge group STAs and non-edge group STAs.

公开(公告)号：US11038720B2

公开(公告)日：2021-06-15

申请号：US15758921

申请日：2016-09-06

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Alphan Sahin ,  Rui Yang ,  Hanging Lou ,  Oghenekome Oteri ,  Robert L. 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.