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：US11438839B2

公开(公告)日：2022-09-06

申请号：US16611186

申请日：2018-05-04

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W52/02 ,  H04W4/06

Abstract: Methods, systems, and apparatuses are disclosed for operating a wireless transmit/receive unit (WTRU) in a wake-up radio (WUR) state and receiving a (WUR) frame from an access point (AP). A WUR frame may include a multicast counter (MC) field. A determination may be made whether a received MC value in a received MC field is a same value as a stored MC value. Where a received MC value is the same value as a stored MC value, the WTRU may operate in the WUR state. Where a received MC value is not the same value as a stored MC value, the WTRU may operate in a primary connectivity radio (PCR) state.

公开(公告)号：US20220030611A1

公开(公告)日：2022-01-27

申请号：US17291799

申请日：2019-11-08

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W72/12

Abstract: A method of multi-access point (multi-AP) communication performed by a wireless transmit/receive unit (WTRU) comprises: receiving (1510) a first trigger frame from a first access point (AP) of a plurality of APs, the first trigger frame comprising first information; receiving (1520) a second trigger frame from a second AP of the plurality of APs at a predetermined time duration after receiving the first trigger frame, the second trigger frame also comprising the first information of the first trigger frame; generating (1530) a synchronization frame based on the first trigger frame and the second trigger frame, the synchronization frame comprising synchronization information; transmitting the synchronization frame to at least the first AP and the second AP; and receiving (1540) a data transmission based on the synchronization information from each of the first AP and the second AP.

公开(公告)号：US20210409165A1

公开(公告)日：2021-12-30

申请号：US17292268

申请日：2019-11-01

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Xiaofei Wang ,  Oghenekome Oteri ,  Hanqing Lou ,  Li Hsiang Sun ,  Joseph Levy ,  Alphan Sahin ,  Frank LaSita

IPC: H04L1/18 ,  H04L1/16

Abstract: Methods and apparatuses are described herein for HARQ signaling and communications in wireless networks. For example, a method implemented in a STA comprises receiving a first MU transmission including a first set of HARQ bits, a first set of user data for STAs including the STA, a preamble including information indicating that the MU transmission includes the first set of HARQ bits, and a first set of HARQ Process IDs associated with the first set of HARQ bits; determining a subset of HARQ bits of the first set of HARQ bits; transmitting a response message indicating a reception status of the subset of HARQ bits; and receiving a second MU transmission including a second set of HARQ bits, a second set of user data for the plurality of STAs, and a second set of HARQ Process IDs associated with the second set of HARQ bits.

公开(公告)号：US11146440B2

公开(公告)日：2021-10-12

申请号：US16611187

申请日：2018-05-04

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: A wireless transmit/receive unit (WTRU) or access point (AP) may generate a protocol data unit (PDU) of a first 802.11 protocol and a preamble and data of a second 802.11 protocol. The preamble and data of the second 802.11 protocol may be arranged on resources of the PDU of the first 802.11 protocol with shaping sequences for concurrent transmission.

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.

公开(公告)号：US20210176033A1

公开(公告)日：2021-06-10

申请号：US17052315

申请日：2019-05-02

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04L5/14 ,  H04W72/12 ,  H04W74/08

Abstract: Methods and apparatuses are described herein for multiple access schemes for Wireless Local Area Network (WLAN) with full-duplex radios. For example, an access point (AP), in response to receiving a request to send (RTS) from a first station (STA), may transmit a full-duplex clear to send (FD CTS) to the first STA and a full-duplex request to send (FD RTS) to a second STA. In response to transmitting the FD RTS to the second STA, the AP may receive a clear to send (CTS) from the second STA. The AP may transmit, to both the first STA and the second STA, a FD trigger frame that includes scheduling information to enables FD communication with the first STA for uplink (UL) data and the second STA for downlink (DL) data at a same time. The scheduling information may include timing information and channel information for the FD communication.

公开(公告)号：US20210136777A1

公开(公告)日：2021-05-06

申请号：US17052234

申请日：2019-05-03

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W72/08 ,  H04B17/309

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：US10985826B2

公开(公告)日：2021-04-20

申请号：US16346619

申请日：2017-11-02

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04B7/06

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.

公开(公告)号：US20210028839A1

公开(公告)日：2021-01-28

申请号：US16319083

申请日：2017-07-21

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04B7/06

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.