公开(公告)号：US20230246752A1

公开(公告)日：2023-08-03

申请号：US18298870

申请日：2023-04-11

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Paul Marinier ,  Moon-il Lee ,  Afshin Haghighat ,  Shahrokh Nayeb Nazar ,  Guodong Zhang ,  Marian Rudolf

IPC: H04L5/00

CPC classification number: H04L5/001 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0092 ,  H04L5/0094 ,  H04L25/0224

Abstract: Methods and systems for sending and receiving an enhanced downlink control channel are disclosed. The method may include receiving control channel information via an enhanced control channel. The method may also include using the control channel information to receive a shared channel. The method may include detecting the presence of the enhanced control channel in a given subframe. The enhanced control channel may be transmitted over multiple antenna ports. For example, code divisional multiplexing and de-multiplexing and the use of common and UE-specific reference signals may be utilized. New control channel elements may be defined, and enhanced control channel state information (CSI) feedback may be utilized. The presence or absence of legacy control channels may affect the demodulation and or decoding methods. The method may be implemented at a WTRU.

公开(公告)号：US11671233B2

公开(公告)日：2023-06-06

申请号：US16700556

申请日：2019-12-02

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Janet A. Stern-Berkowitz ,  Pouriya Sadeghi ,  Nobuyuki Tamaki ,  Moon-il Lee ,  Ghyslain Pelletier ,  Li-Hsiang Sun ,  Marian Rudolf

IPC: H04L5/14 ,  H04W72/12 ,  H04L5/00 ,  H04L1/00 ,  H04L1/1822 ,  H04L1/1829 ,  H04W72/23 ,  H04L1/18 ,  H04B7/26 ,  H04L1/1812

CPC classification number: H04L5/14 ,  H04L1/1822 ,  H04L1/1854 ,  H04W72/23 ,  H04B7/2656 ,  H04L1/1812 ,  H04L5/0055 ,  H04L2001/0093

Abstract: A wireless transmit/receive unit (WTRU) may monitor a common physical downlink control channel (PDCCH) search space for a downlink control information (DCI) signal and a first radio network terminal identifier (RNTI). In an example, the DCI signal may include an uplink (UL)/downlink (DL) configuration indication. In a further example, the first RNTI may be associated with UL/DL configuration information. The WTRU may transmit UL data or receive DL data based on the received UL/DL configuration indication. In another example, the DCI may include a plurality of UL/DL configuration indications. In an additional example, a plurality of WTRUs may monitor the common PDCCH search space for the first RNTI. Also, the UL/DL configuration indication may indicate UL/DL configuration information on a symbol basis. Further, the WTRU may receive a second RNTI which is associated with the UL/DL configuration indication.

公开(公告)号：US20230125259A1

公开(公告)日：2023-04-27

申请号：US18084052

申请日：2022-12-19

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Paul Marinier ,  Afshin Haghighat ,  Guodong Zhang ,  Diana Pani ,  J. Patrick Tooher ,  Marian Rudolf ,  Ghyslain Pelletier ,  Christopher R. Cave ,  Yan Li ,  Allan Y. Tsai ,  Pascal M. Adjakple

IPC: H04B7/024 ,  H04B7/06

Abstract: Embodiments contemplate methods and systems for determining and communicating channel state information (CSI) for one or more transmission points (or CSI reference signal resources). Embodiments further contemplate determining transmission states may include applying at least one transmission state parameter to channel state information (CSI). Embodiments also contemplate reporting CSI based on the transmission state and/or at least one transmission state parameter applied thereto.

公开(公告)号：US11483781B2

公开(公告)日：2022-10-25

申请号：US16387040

申请日：2019-04-17

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Pouriya Sadeghi ,  Janet A. Stern-Berkowitz ,  Moon-il Lee ,  J. Patrick Tooher ,  Marian Rudolf

IPC: H04W56/00 ,  H04L5/00 ,  H04W76/27 ,  H04W72/04

Abstract: Systems, methods, and instrumentalities are disclosed for LTE operation in an unlicensed spectrum (LTE-U). A wireless transmit/receive unit (WTRU) may establish a connection with a first cell on a licensed frequency band. The WTRU may receive a first downlink transmission from a second cell operating on an unlicensed frequency band. The WTRU may determine that a synchronization signal transmission from a third cell operating on the unlicensed frequency band is transmitted using one or more resource elements. The WTRU may perform frequency and/or timing estimation based on the synchronization signal transmission. The WTRU may perform rate matching around the one or more resource elements that correspond to the synchronization signal transmission. The WTRU may perform rate matching around the one or more resource elements by de-mapping symbols of the downlink transmission.

公开(公告)号：US20220060921A1

公开(公告)日：2022-02-24

申请号：US17461249

申请日：2021-08-30

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Pouriya Sadeghi ,  Janet A. Stern-Berkowitz ,  Moon-il Lee ,  J. Patrick Tooher ,  Marian Rudolf

IPC: H04W24/10 ,  H04W72/04

Abstract: A wireless transmit/receive unit (WTRU) may receive first measurement indication information indicating an activation of measurement reporting. The WTRU may determine a first set of resource elements (REs) based on the first measurement indication information. Further, the first set of REs may be associated with measurement-related time and frequency resources. Also, the WTRU may receive one or more measurement-related signals in the indicated first set of REs. Additionally, the WTRU may perform a measurement of each measurement-related signal. The WTRU may transmit, based on the first measurement indication information, a measurement report based on the measurement of each measurement-related signal. Further, the WTRU may receive second measurement indication information indicating a deactivation of measurement reporting. Also, the WTRU may receive indication information regarding a plurality of sets of REs via radio resource control (RRC) signaling, including at least the first set of REs and a second set of REs.

公开(公告)号：US20220022163A1

公开(公告)日：2022-01-20

申请号：US17462927

申请日：2021-08-31

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Moon-il Lee ,  Janet A. Stern-Berkowitz ,  Nobuyuki Tamaki ,  John W. Haim ,  Pouriya Sadeghi ,  Marian Rudolf ,  Shahrokh Nayeb Nazar

IPC: H04W72/00 ,  H04W4/029 ,  H04W74/00 ,  H04L1/18 ,  H04B17/318 ,  H04W4/70 ,  H04W24/02

Abstract: A method and apparatus are described for a low cost machine-type-communication (LC-MTC) wireless transmit/receive unit (WTRU) to enhance coverage. An example method for physical broadcast channel (PBCH) enhancement includes receiving system information on an enhanced PBCH (ePBCH). The ePBCH is located in a set of radio frames which is a subset of available radio frames, where the subset includes fewer than all the available radio frames. The ePBCH is received in at least one radio frame of the set of radio frames. An example method for physical random access channel (PRACH) enhancement includes receiving configuration of legacy PRACH resources and enhanced PRACH (ePRACH) resources. The WTRU selects one of legacy PRACH resources or ePRACH resources based on a coverage capability. Another example method for PRACH enhancement includes receiving configuration of ePRACH resources. The ePRACH resources include multiple ePRACH resource types, each ePRACH resource type being associated with a coverage capability.

公开(公告)号：US11012980B2

公开(公告)日：2021-05-18

申请号：US16987571

申请日：2020-08-07

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Marian Rudolf ,  Benoit Pelletier ,  Diana Pani ,  Paul Marinier ,  Samian Kaur ,  Martino Freda

IPC: H04W72/00 ,  H04W72/04 ,  H04L29/08 ,  H04W4/70 ,  H04L12/18 ,  H04W72/12 ,  H04W88/02 ,  H04W92/18

Abstract: Systems, methods, and instrumentalities are disclosed to determine access control and channel and signaling priority. A wireless transmit/receive unit (WTRU) may comprise a processor configured, at least in part, to determine device-to-device (D2D) data to be transmitted. The WTRU may determine if the D2D data may be transmitted. The WTRU may determine available scheduling assignment (SA) resources used for priority based D2D data signals. The WTRU may select one or more available SA resources used for priority based D2D data signals. The WTRU may transmit the D2D data, wherein the D2D data may be transmitted on the selected SA resources.

公开(公告)号：US20210112557A1

公开(公告)日：2021-04-15

申请号：US17128934

申请日：2020-12-21

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Moon-il Lee ,  Marian Rudolf ,  Peter S. Wang ,  Shahrokh Nayeb Nazar ,  Janet A. Stern-Berkowitz ,  Pouriya Sadeghi ,  Allan Tsai ,  Sung-Hyuk Shin

IPC: H04W72/04 ,  H04W74/08 ,  H04L1/18 ,  H04L1/00

Abstract: Systems and/or methods for supporting communications at a reduced bandwidth with a full bandwidth network such as a long-term evolution (LTE) network may be disclosed. For example, inband assignments such as downlink assignments and/or uplink grants may be provided and/or received and transmissions may be monitored and/or decoded based on the inband assignment. Additionally, information (e.g. a definition or configuration) associated with an ePDCCH may be provided and/or received and ePDCCH resources may be monitored and/or decoded based on such information. An indication for support of a reduced bandwidth by the full bandwidth network may also be provided and/or received and control channels in the reduced or narrow bandwidth may be monitored and/or decoded based on the indication. A PRACH preamble and/or a multi-type subframe definition may also be provided and/or used for support of such a reduced bandwidth.

公开(公告)号：US10904869B2

公开(公告)日：2021-01-26

申请号：US16433942

申请日：2019-06-06

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Shahrokh Nayeb Nazar ,  Kyle Jung-Lin Pan ,  Robert L. Olesen ,  Ghyslain Pelletier ,  Marian Rudolf ,  Paul Marinier ,  Charles A. Dennean ,  Stephen G. Dick ,  Allan Y. Tsai ,  Christopher R. Cave ,  Chang-Soo Koo

IPC: H04W72/00 ,  H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L1/16 ,  H04L1/18 ,  H04B1/7097 ,  H04W48/16 ,  H04L1/12

Abstract: Methods and systems for transmitting uplink control information and feedback are disclosed for carrier aggregation systems. A user equipment device may be configured to transmit uplink control information and other feedback for several downlink component carriers using one or more uplink component carriers. The user equipment device may be configured to transmit such data using a physical uplink control channel rather than a physical uplink shared channel. The user equipment device may be configured to determine the uplink control information and feedback data that is to be transmitted, the physical uplink control channel resources to be used to transmit the uplink control information and feedback data, and how the uplink control information and feedback data may be transmitted over the physical uplink control channel.

公开(公告)号：US10779311B2

公开(公告)日：2020-09-15

申请号：US16037133

申请日：2018-07-17

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： J. Patrick Tooher ,  Paul Marinier ,  Marian Rudolf

IPC: H04W72/12 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04

Abstract: Methods and systems are disclosed for reducing control signaling in uplink transmissions. A device, such as a wireless transmit/receive unit, may determine to use a demodulation reference signal (DM-RS) transmission schedule out of a plurality of DM-RS transmission schedules. The DM-RS transmission schedule may be characterized by a DM-RS transmission being mapped to a single orthogonal frequency-division multiplexing (OFDM) symbol per subframe of a data stream. The DM-RS transmission schedule may be characterized by a DM-RS transmission being mapped to a first subset of subcarriers of an OFDM symbol of a subframe of a data stream and Physical Uplink Shared Channel (PUSCH) transmission or Physical Uplink Control Channel (PUCCH) control information being mapped to a second set of subcarriers of the OFDM symbol. The first set of subcarriers may be different than the second set of subcarriers. The data stream may be transmitted according to the DM-RS transmission schedule.