公开(公告)号：US20200037356A1

公开(公告)日：2020-01-30

申请号：US16592283

申请日：2019-10-03

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Hanqing Lou ,  Guodong Zhang ,  Li-Hsiang Sun ,  Oghenekome Oteri ,  Robert L. Olesen ,  Fengjun Xi ,  Rui Yang ,  Xiaofei Wang

IPC: H04W74/08 ,  H04W72/12

Abstract: Methods and apparatus are described. A station includes a transceiver and a processor, which detect a trigger frame for an uplink (UL) multi-user (MU) transmission. The trigger frame includes a user information field with an allocation of one or more random access resource units (RUs) and a common information field with information to set high efficiency (HE) SIGNAL-A (HE-SIG-A) fields in the UL MU transmission. The transceiver and the processor generate an HE trigger-based (TB) physical layer protocol data unit (PPDU) and set an HE-SIG-A field in the HE TB PPDU using the information in the trigger frame. The transceiver and the processor select one of the one or more random access RUs and transmit the HE TB PPDU, using the selected one of the one or more random access RUs, a short inter-frame space after the trigger frame.

公开(公告)号：US20190297646A1

公开(公告)日：2019-09-26

申请号：US16436478

申请日：2019-06-10

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Hanqing Lou ,  Monisha Ghosh ,  Xiaofei Wang ,  Robert L. Olesen

IPC: H04W74/08 ,  H04B7/06 ,  H04W72/12

Abstract: Systems, methods, and instrumentalities are provided to implement transmission scheduling. A multiband device may send a request via a first frequency band. The request may include a multiband Request to Send (MRTS) transmission. The request may be associated with a second frequency band and/or a beamforming training schedule. The first frequency band may be associated with a quasi-omni transmission and the second frequency band may be associated with a directional transmission. The first frequency band may be a 5 GHz band and the second frequency band may be a 60 GHz band. The multiband device may receive a multiband Clear to Send (MCTS) transmission via the first frequency band confirming the request. The multiband device may be configured to send a beamforming signal in accordance with the request, for example, via the second frequency band. The beamforming signal may be sent in accordance with a beamforming training schedule.

公开(公告)号：US20190260446A1

公开(公告)日：2019-08-22

申请号：US16331018

申请日：2017-09-08

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Oghenekome Oteri ,  Hanqing Lou ,  Rui Yang ,  Li-Hsiang Sun

IPC: H04B7/06 ,  H04W72/04

Abstract: Multiple channel transmission in mmW Wireless Local Area Network (WLAN) systems may be provided. Multi-channel aggregation and channel bonding may include, for example, multi-channel aggregation for a single transmitter/receiver pair or multi-channel aggregation and bonding for multiple transmitter/receiver pairs with frequency and space based multiple access. Multi-channel beamforming may include, for example, one analog beam across two channels and analog circuits on each channel or a single analog circuit on both channels, one analog beam across two channels and separate digital precoding schemes on each channel, one analog beam across a primary channel and separate digital precoding schemes on each channel or two analog beams on two channels and separate digital precoding on each channel. Preamble signaling may be provided.

公开(公告)号：US20190215764A1

公开(公告)日：2019-07-11

申请号：US16358269

申请日：2019-03-19

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04W48/20 ,  H04W48/16

CPC classification number: H04W48/20 ,  H04B7/0456 ,  H04B7/0617 ,  H04W48/12 ,  H04W48/16

Abstract: A method for beacon information provisioning, transmissions and protocol enhancements includes defining multiple level beacons based on the attributes of beacon information fields/elements. A short beacon may be used in addition to a primary beacon in space-time block code (STBC) modes, non-STBC modes and in multiple bandwidth modes. The short beacons may also be used for Fast Initial Link Setup (FILS) and to extend system coverage range. Beacon transmissions may use adaptive modulation and coding set/scheme (MCS).

公开(公告)号：US10334475B2

公开(公告)日：2019-06-25

申请号：US15555686

申请日：2016-03-07

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04W28/06 ,  H04L5/00 ,  H04W28/04 ,  H04W72/12 ,  H04L1/16 ,  H04L1/18 ,  H04L1/00 ,  H04B7/0452 ,  H04W84/12

Abstract: Mechanisms may be used for aggregating acknowledgement (ACK), block ACK (BA) and/or short packets transmissions for multi-user (MU) wireless communication systems. Aggregation mechanisms may be used for uplink (UL) and/or downlink (DL) orthogonal frequency division multiple access (OFDMA), and/or UL/DL multiple-user multiple input multiple output (MU-MIMO) transmissions, for example. Multi-user short packets may be aggregated and/or simultaneously transmitted for DL, UL, or peer-to-peer (P2P) transmissions.

公开(公告)号：US20190182778A1

公开(公告)日：2019-06-13

申请号：US16275046

申请日：2019-02-13

Applicant: InterDigital Patent Holdings, Inc.

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

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

Abstract: Methods and apparatuses are described herein for determining a transmit power based on clear channel assessment (CCA) thresholds. A station (STA) associated with a first Basic Service Set (BSS) may receive, from an access point (AP) associated with the first BSS, a clear channel assessment (CCA) value for a group of STAs associated with a second BSS. The CCA value may indicate a minimum CCA threshold for a packet received from the second BSS. The STA may then determine, based on the CCA value, a STA specific CCA parameter and a target CCA parameter. The target CCA parameter may be greater than or equal to the STA specific CCA parameter. Based on the STA specific CCA parameter and the target CCA parameter, the STA may determine a target transmit power control (TPC) parameter of the STA, wherein the sum of target TPC parameter and target CCA parameter is constant.

公开(公告)号：US10312950B2

公开(公告)日：2019-06-04

申请号：US15516597

申请日：2015-10-02

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 ,  H04L1/00 ,  H04L1/22 ,  H04L5/00 ,  H03M13/27 ,  H04L1/20 ,  H04L1/16 ,  H04W84/12

Abstract: Methods, systems, and apparatuses are disclosed for transmitting a plurality of bits to an access point (AP) and receiving constellation symbol from the AP. A constellation symbol may include a plurality of indications of bits. Each indication of the plurality of indications of bits may be associated with a respective wireless transmit/receive unit (WTRU) of a plurality of WTRUs. The plurality of indications of bits may include indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).

公开(公告)号：US20190109681A1

公开(公告)日：2019-04-11

申请号：US16213633

申请日：2018-12-07

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Monisha Ghosh ,  Nirav B. Shah ,  Sudheer A. Grandhi ,  Ronald G. Murias ,  Guodong Zhang ,  Xiaofei Wang ,  Hanqing Lou ,  Robert L. Olesen

IPC: H04L5/00 ,  H04L1/00

Abstract: Method and apparatus for transmission and reception of a Greenfield preamble are provided. In the method and apparatus, the Greenfield preamble may be a single user (SU) preamble or a multi user (MU) preamble. As an MU preamble, the Greenfield preamble includes a short training field (STF), a first long training field (LTF), a first signal (SIG) field, at least one additional LTF, and a second SIG field. Additionally, the Greenfield preamble may be utilized for efficient transmission and reception of control information to wireless devices, whereby the control information may be indicated using the STF, the first LTF, or the first or second SIG fields.

公开(公告)号：US10237818B2

公开(公告)日：2019-03-19

申请号：US13782709

申请日：2013-03-01

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04W76/10 ,  H04W48/20 ,  H04W48/16 ,  H04W48/12 ,  H04B7/0456 ,  H04B7/06

Abstract: A method for beacon information provisioning, transmissions and protocol enhancements includes defining multiple level beacons based on the attributes of beacon information fields/elements. A short beacon may be used in addition to a primary beacon in space-time block code (STBC) modes, non-STBC modes and in multiple bandwidth modes. The short beacons may also be used for Fast Initial Link Setup (FILS) and to extend system coverage range. Beacon transmissions may use adaptive modulation and coding set/scheme (MCS).

公开(公告)号：US20190007973A1

公开(公告)日：2019-01-03

申请号：US16064281

申请日：2017-01-06

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/08

Abstract: Methods and apparatus for protection of multi-user (MU) transmission are described herein. An apparatus includes a receiver, a transmitter and a processor. The receiver and the processor detect a trigger frame for an uplink (UL) multi-user (MU) transmission. The processor and the transmitter generate and send a frame in response to the trigger frame and transmit channel availability information for a plurality of channels in response to the trigger frame. The receiver and the processor detect data in a resource unit (RU) of a downlink (DL) MU physical layer (PHY) protocol data unit (PPDU) on one of the plurality of channels. The one of the plurality of channels is based on the transmitted channel availability information.