公开(公告)号：US20210028831A1

公开(公告)日：2021-01-28

申请号：US16319077

申请日：2017-07-21

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04B7/0452 ,  H04B7/06

Abstract: An AP/PCP may perform user selection/pairing/grouping based on a measurement of an analog transmission (e.g., signal to noise ratio (SNR) or signal to interference plus noise ratio (SINR)). The SNRs may be used, for example by the station, to determine best beams and/or beam pairs and/or worst beams and/or beam pairs. A station may feed back the best few beams and/or beam pairs for a Tx and Rx virtual antenna pair. A station may feed back the worst few beams for the Tx and Rx virtual antenna pair. The AP/PCP may receive the indication(s) and/or use the indication(s) to group the stations.

公开(公告)号：US20200162302A1

公开(公告)日：2020-05-21

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：US20190288763A1

公开(公告)日：2019-09-19

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：US12237885B2

公开(公告)日：2025-02-25

申请号：US18236238

申请日：2023-08-21

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04B7/0452 ,  H04B7/06 ,  H04W84/12

Abstract: An AP/PCP may perform user selection/pairing/grouping based on a measurement of an analog transmission (e.g., signal to noise ratio (SNR) or signal to interference plus noise ratio (SINR)). The SNRs may be used, for example by the station, to determine best beams and/or beam pairs and/or worst beams and/or beam pairs. A station may feed back the best few beams and/or beam pairs for a Tx and Rx virtual antenna pair. A station may feed back the worst few beams for the Tx and Rx virtual antenna pair. The AP/PCP may receive the indication(s) and/or use the indication(s) to group the stations.

公开(公告)号：US12225494B2

公开(公告)日：2025-02-11

申请号：US18211509

申请日：2023-06-19

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W4/00 ,  H04W8/00 ,  H04W60/04 ,  H04W84/12

Abstract: Methods and apparatuses are described herein for multiple AP coordination in wireless local area networks (WLANs). For example, a station (STA) may receive, from a first access points (APs), a probe response frame that includes one or more indicators indicating multiple AP operation capabilities of the first AP and a second AP. The STA may transmit, to at least one of the first AP or the second AP, a multiple AP association request frame that enables the first AP to be associated with the second AP for a multiple AP operation. The STA may receive, from the first AP, a first multiple AP association response frame indicating acceptance or rejection of the multiple AP operation with the first AP. The STA may receive, from the second AP, a second multiple AP association response frame indicating acceptance or rejection of the multiple AP operation with the second AP.

公开(公告)号：US12199721B2

公开(公告)日：2025-01-14

申请号：US15743408

申请日：2016-07-01

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04B7/06 ,  H04B7/0417 ,  H04W24/10 ,  H04W88/08

Abstract: An access point (AP) may transmit a null data packet announcement (NDPA) with an indication of a resource unit of a bandwidth that feedback is requested. The AP may transmit a null data packet (NDP) for measurement of a channel quality for a resource unit of a bandwidth. The AP may transmit, based on a response, another feedback request for resource units of the bandwidth.

公开(公告)号：US20240414755A1

公开(公告)日：2024-12-12

申请号：US18809691

申请日：2024-08-20

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04W74/00 ,  H04B17/318 ,  H04W72/0453 ,  H04W72/56 ,  H04W74/08

Abstract: Methods and apparatuses for enhancing random access procedures are described herein. A method performed by a station (STA) may include receiving, from an access point (AP), a physical layer convergence procedure (PLCP) protocol data unit (PPDU) in one of an upper frequency band or a lower frequency band. The PPDU may include a trigger frame. The trigger frame may include information indicating an allocation of a plurality of random access (RA) resource units (RA-RUs). Each of the RA-RUs may be associated with one of the upper frequency band or the lower frequency band. The method may include selecting one of the plurality of allocated RA-RUs and transmitting, to the AP, a message using the selected RA-RU.

公开(公告)号：US12113620B2

公开(公告)日：2024-10-08

申请号：US16960937

申请日：2019-01-09

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

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

CPC classification number: H04L1/1607 ,  H04L5/0055 ,  H04L27/2607 ,  H04L27/2634 ,  H04W16/14 ,  H04W72/21 ,  H04L5/0048

Abstract: A wireless transmit/receive unit (WTRU) may modulate, based on a number of uplink control bits, a first sequence or the first sequence and a second sequence. The WTRU may spread the first sequence and the second sequence with a complementary sequence pair, concatenate parts of the first sequence and the second sequence in interlaced resource blocks (RBs), and perform an inverse discrete Fourier transform (IDFT) on the interlaced parts. The WTRU may transmit on a physical uplink control channel (PUCCH) a signal outputted by the IDFT.

公开(公告)号：US12069720B2

公开(公告)日：2024-08-20

申请号：US17610343

申请日：2020-05-08

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W74/00 ,  H04B17/318 ,  H04W72/0453 ,  H04W72/56 ,  H04W74/08

CPC classification number: H04W74/008 ,  H04B17/318 ,  H04W72/0453 ,  H04W72/56 ,  H04W74/006 ,  H04W74/0866

Abstract: Methods and apparatuses for enhancing random access procedures are described herein. A method performed by an access point (AP) may comprise allocating a plurality of random access (RA) resource units (RA-RUs) for transmitting a message from a station (STA) to the AP over an upper or lower frequency band. The method may comprise transmitting, to a station (STA), one or more physical layer convergence procedure (PLCP) protocol data unit (PPDU) over the upper or lower frequency bands. Each of the one or more PPDUs may include a trigger frame, and the trigger frame may include an indication of the plurality of RA-RUs and a target received signal strength indicator (TRSSI) associated with at least one of the upper or lower frequency bands. The method may comprise receiving, in response to the trigger frame, the message from the STA in one of the plurality of RA-RUs.

公开(公告)号：US12068793B2

公开(公告)日：2024-08-20

申请号：US16066577

申请日：2016-12-29

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.