公开(公告)号：US11184942B2

公开(公告)日：2021-11-23

申请号：US16418832

申请日：2019-05-21

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Ghyslain Pelletier ,  Paul Marinier ,  Diana Pani ,  Stephen E. Terry ,  Pascal M. Adjakple ,  Samian Kaur

IPC: H04W36/00 ,  H04W72/12 ,  H04W74/04 ,  H04W72/04 ,  H04W88/06 ,  H04W76/27 ,  H04W76/15 ,  H04W52/36 ,  H04L5/00 ,  H04W16/32 ,  H04W24/00 ,  H04W48/16 ,  H04W84/04

Abstract: Systems and methods are disclosed for a WTRU to operate using multiple schedulers. The WTRU may exchange data with the network over more than one data path, such that each data path may use a radio interface connected to a different network node and each node may be associated with an independent scheduler. For example, a WTRU may establish a RRC connection between the WTRU and a network. The RRC connection may establish a first radio interface between the WTRU and a first serving site of the network and a second radio interface between the WTRU and a second serving site of the network. The RRC connection may be established between the WTRU and the MeNB and a control function may be established between the WTRU and the SCeNB. The WTRU may receive data from the network over the first radio interface or the second radio interface.

公开(公告)号：US20210360583A1

公开(公告)日：2021-11-18

申请号：US17385530

申请日：2021-07-26

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Pouriya Sadeghi ,  J. Patrick Tooher ,  Janet Stern-Berkowitz ,  Moon-il Lee ,  Ghyslain Pelletier ,  Nobuyuki Tamaki ,  Shahrokh Nayeb Nazar ,  Li-Hsiang Sun

IPC: H04W68/02 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04

Abstract: Methods, systems and apparatuses for operation in long-term evolution (LTE) systems are provided, including a method implemented in a base station that may include receiving, from a wireless transmit/receive unit (WTRU) via a first interface, a first message including radio capability information associated with the WTRU; transmitting, to a mobility management entity (MME) via a second interface, a second message including the radio capability information; receiving, from the MME via the second interface, a paging message including the radio capability information; and determining whether to page the WTRU in idle mode based on the radio capability information. Also provided is another method implemented by a WTRU in a vicinity of a dormant cell. This method may include any of: receiving, from a dormant cell, a signal; receiving, from a serving cell, a trigger to initiate measurement of one or more dormant cells; and measuring the signal.

公开(公告)号：US20210328894A1

公开(公告)日：2021-10-21

申请号：US17362211

申请日：2021-06-29

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Ghyslain Pelletier ,  Paul Marinier ,  Diana Pani

IPC: H04L12/26 ,  H04L5/00 ,  H04L29/12 ,  H04W72/04 ,  H04W74/08

Abstract: Systems and methods are contemplated for reconfiguration of one or more MAC instances while the WTRU is operating using dual- or multi-MAC instance connectivity. For example, upon reception of RRC reconfiguration information that modifies one or more secondary MAC instances, the WTRU may transmit a reconfiguration complete message to a Macro eNB (MeNB) and may synchronize to small-cell or secondary eNB (SeNB), for example if triggered by one or more of an RRC flag, a physical downlink control channel (PDCCH) order (MeNB/SeNB), MAC activation information, etc. For example, the WTRU may synchronize to the SeNB for specific type(s) of RRC reconfigurations, but not other type(s) of RRC reconfigurations. Although examples may be described in terms of dual connectivity, the WTRU may establish connectivity and perform mobility procedures with more than two radio access network (RAN) nodes (e.g., eNBs), and the embodiments described may be equally applicable to those scenarios.

公开(公告)号：US11134417B2

公开(公告)日：2021-09-28

申请号：US16444736

申请日：2019-06-18

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Guodong Zhang ,  Jin Wang

IPC: H04W36/00 ,  H04W74/00 ,  H04W74/08 ,  H04W88/08 ,  H04W36/08

Abstract: A method and apparatus for accessing a random access channel (RACH) during handover are disclosed. A handover procedure is initiated and a maximum handover interruption timer is activated. A dedicated preamble is transmitted in an attempt to access the RACH on a condition that the dedicated preamble is reserved in a current random access opportunity and the maximum handover interruption timer has not expired. A contention-based preamble is transmitted in an attempt to access the RACH on a condition that a dedicated preamble is not reserved in a current random access opportunity. If the maximum handover interruption timer has expired, a contention-based preamble is transmitted in an attempt to access the RACH.

公开(公告)号：US11122444B2

公开(公告)日：2021-09-14

申请号：US14441237

申请日：2013-11-08

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Hanqing Lou ,  Pengfei Xia ,  Monisha Ghosh ,  Oghenekome Oteri ,  Robert L. Olesen

IPC: H04W16/28 ,  H04B7/0408 ,  H04B7/0452 ,  H04B7/06 ,  H04B7/0417 ,  H04W72/04 ,  H04W88/08 ,  H04B7/0413

Abstract: A method, apparatus, system, and computer readable medium may be used to perform beamforming. The method may include a first communication device sending a first plurality of beamforming training frames to a second communication device using a first beamforming weight vector; the first communication device receiving from the second communication device a second beamforming weight vector; and the first communication device sending a second plurality of beamforming training frames to the second communication device using the second beamforming weight vector. The apparatus, method, system, and computer readable media may use spatial diversity with beam switching, spatial diversity with a single beam, weighted multipath beamforming training, single user spatial multiplexing, and beamforming training for beam division multiple access (BDMA).

公开(公告)号：US20210243787A1

公开(公告)日：2021-08-05

申请号：US17239075

申请日：2021-04-23

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Oghenekome OTERI ,  Hanqing LOU ,  Frank LA SITA ,  Fengjun XI

IPC: H04W72/12 ,  H04W52/36 ,  H04B17/318 ,  H04L1/00 ,  H04W52/24

Abstract: Systems, methods, and instrumentalities are disclosed for range extension, basic service set (BSS) color labeling, and multi-user (MU) fragmentation and control in WLANs. A range extension notification/enablement scheme, a clear channel assessment (CCA), a headroom indication, and/or power scaling may be provided for a range extension mode. BSS color may be provided for multiple-BSSs under an access point (AP). Uplink (UL) transmission may be provided with different fragmentation capabilities. A high-efficiency (HE) trigger-based UL NDP physical layer convergence protocol (PLCP) protocol data unit (PPDU) frame may be provided. A station (STA) may receive a trigger frame comprising a null data packet (NDP) indication and a trigger type. The STA may determine that the STA is an intended recipient of the trigger frame. The STA may prepare an NDP PPDU for a control frame and/or a management frame based on the trigger type.

公开(公告)号：US20210241634A1

公开(公告)日：2021-08-05

申请号：US17052713

申请日：2019-04-26

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Mohammad Sarim ,  Matthew Dechering ,  Mohammadreza Radmanesh ,  Manish Kumar ,  Ravikumar Pragada

IPC: G08G5/00 ,  H04L29/08

Abstract: Methods and systems herein relate to unmanned aerial vehicles (UAVs) avoiding collisions by interacting with servers. Some embodiments of a method include receiving, by an unmanned aircraft system (UAS) traffic management (UTM) server one or more intended trajectories from one or more UAVs; determining, by the UTM server one or more conflicts based on the intended trajectories intersecting over a region monitored by the UTM server; and communicating, by the UTM server the one or more conflicts, the communicating includes assigning a value to each of a plurality of three-dimensional (3D) grid cells representing the region monitored by the UTM server, each value representative of a potential for conflict associated with a grid cell; and transmitting, to the one or more UAVs, value data associated with the plurality of grid cells.

公开(公告)号：US11082114B2

公开(公告)日：2021-08-03

申请号：US16826512

申请日：2020-03-23

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Hanqing Lou ,  Xiaofei Wang ,  Oghenekome Oteri

IPC: H04B7/06 ,  H04B7/08 ,  H04B17/12 ,  H04W72/04 ,  H04W74/00 ,  H04B7/0413

Abstract: Presently disclosed are systems and methods for beamforming training in WLANs. In various embodiments, there are unified MIMO beamforming training procedure, which includes a training period in which an initiator transmits multiple unified training frames for performing a transmit-beamforming training of the initiator and a receive-beamforming training of one or more responders; a feedback period in which each responder replies with a beamforming-feedback response; and an acknowledgement period during which the initiator transmits respective acknowledgement frames to the one or more responders from which responses were received. Rules for restricted random access in various slots of the feedback period may be implemented, to address response contention between multiple qualifying responders.

公开(公告)号：US20210234603A1

公开(公告)日：2021-07-29

申请号：US17230473

申请日：2021-04-14

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：US20210204254A1

公开(公告)日：2021-07-01

申请号：US17181938

申请日：2021-02-22

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Hanqing Lou ,  Ronald G. Murias ,  Xiaofei Wang ,  Nirav B. Shah ,  Monisha Ghosh ,  Guodong Zhang ,  Frank La Sita ,  Robert L. Olesen

IPC: H04W72/04 ,  H04L5/00 ,  H04W74/00 ,  H04L27/26

Abstract: A method and apparatus may be configured to support coordinated orthogonal block-based resource allocation (COBRA) operations. An access point (AP) may be configured to indicate to a plurality of stations (STA)s that it may support COBRA. Each WTRU may be configured to indicate to the AP that it can support COBRA as well. The AP may be configured to transmit a COBRA controller information element (IE) comprising a plurality of fields to each of the WTRUs. Each WTRU may be configured to transmit a COBRA controllee IE comprising a plurality of fields. STA grouping management, group maintenance, channel access, beamforming, sounding and frequency and synchronization procedures are also described.