公开(公告)号：US20230216621A1

公开(公告)日：2023-07-06

申请号：US18120754

申请日：2023-03-13

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：US11595989B2

公开(公告)日：2023-02-28

申请号：US17392964

申请日：2021-08-03

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Paul Marinier ,  Diana Pani ,  Ghyslain Pelletier ,  Marian Rudolf

IPC: H04W74/00 ,  H04L5/00 ,  H04W72/04 ,  H04W88/06 ,  H04B7/06 ,  H04L1/1829 ,  H04W72/0453 ,  H04W72/12 ,  H04W24/10 ,  H04L1/00 ,  H04L1/1607 ,  H04W12/10

Abstract: A method and apparatus for sending uplink control information by a multi-mode wireless transmit/receive unit (WTRU) capable of operating on multiple component carriers of a plurality of radio access technologies (RATs) for multi-RAT operation are disclosed. The WTRU may generate uplink control information (UCI) pertaining to a first RAT and a second RAT, wherein the UCI may include a first plurality of hybrid automatic repeat request acknowledgements (HARQ-ACKs) pertaining to a plurality of downlink (DL) transmissions of the first RAT and a second plurality of HARQ-ACKs pertaining to a plurality of DL transmissions of the second RAT. The WTRU may multiplex at least part of the generated UCI pertaining to the first RAT and at least part of the generated UCI pertaining to the second RAT onto a physical channel on a component carrier of the second RAT.

公开(公告)号：US20230006872A1

公开(公告)日：2023-01-05

申请号：US17943386

申请日：2022-09-13

Applicant: InterDigital Patent Holdings, Inc.

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

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

公开(公告)号：US20220394691A1

公开(公告)日：2022-12-08

申请号：US17890214

申请日：2022-08-17

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04W72/04 ,  H04W74/08 ,  H04W16/14

Abstract: Systems, devices, and methods are disclosed for determining one or more clear channel assessment occasions. Techniques include performing one or more clear channel assessment (CCA) processes on a channel during the one or more CCA occasions to determine whether the channel is available at the one or more CCA occasion based on the one or more CCA processes. Techniques include sending the UL transmission in one or more UL subframes via the channel on at least a condition that the channel is determined to be available at the one or more CCA occasions. Techniques include performing the one or more CCA processes on the channel during another of the one or more CCA occasions on at least a condition that the channel is determined to be unavailable at a previous CCA occasion.

公开(公告)号：US20220329400A1

公开(公告)日：2022-10-13

申请号：US17847594

申请日：2022-06-23

Applicant: InterDigital Patent Holdings, Inc.

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

IPC: H04L5/00

Abstract: Techniques for efficient downlink control with a large number of carriers and/or TTis are described. Techniques for blind decoding reduction may include making the search space and/or aggregation level of candidates for a first PDCCH/E-PDCCH associated with the characteristics of a second received PDCCH/E-PDCCH. Techniques may include embedding DCI for a set of serving cells and/or TTis in a PDSCH. DCI for a set of serving cells and/or TTis may be included in single PDCCH/E-PDCCH. To reduce overhead, carrier indicator field interpretation may be associated with the serving cell or TTI from which the PDCCH/E-PDCCH containing the downlink control information is received, or the group of cells or TTis to which the PDCCH/E-PDCCH containing the downlink control information belongs.

公开(公告)号：US11457433B2

公开(公告)日：2022-09-27

申请号：US15565113

申请日：2016-04-07

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W72/04 ,  H04W74/08 ,  H04W16/14 ,  H04W72/12

Abstract: Systems, devices, and methods are disclosed for determining one or more clear channel assessment occasions. Techniques include performing one or more clear channel assessment (CCA) processes on a channel during the one or more CCA occasions to determine whether the channel is available at the one or more CCA occasion based on the one or more CCA processes. Techniques include sending the UL transmission in one or more UL subframes via the channel on at least a condition that the channel is determined to be available at the one or more CCA occasions. Techniques include performing the one or more CCA processes on the channel during another of the one or more CCA occasions on at least a condition that the channel is determined to be unavailable at a previous CCA occasion.

公开(公告)号：US11109351B2

公开(公告)日：2021-08-31

申请号：US16192486

申请日：2018-11-15

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 ,  H04W74/08 ,  H04W4/02 ,  H04W4/06 ,  H04W48/12

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：US20210259043A1

公开(公告)日：2021-08-19

申请号：US17246199

申请日：2021-04-30

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

Inventor： Ulises Olvera-Hernandez ,  Ghyslain Pelletier ,  Peter S. Wang ,  Kai Liu ,  Guanzhou Wang ,  Marian Rudolf ,  Samian Kaur ,  Michael Starsinic

IPC: H04W76/28 ,  H04W52/02 ,  H04W4/70

Abstract: Current wireless networks do not allow machine type communication (MTC) devices to have long discontinuous reception (DRX) cycles or sleep lengths. A long DRX cycle may allow MTC systems and devices to operate with much longer DRX/Sleep cycles/periods. This may facilitate the MTC operations for infrequent system access or infrequent system reaching (e.g. paged once in a week) with no or low mobility and may allow MTC devices to sleep for a long time with low power consumption.

公开(公告)号：US11039329B2

公开(公告)日：2021-06-15

申请号：US15387703

申请日：2016-12-22

Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

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

IPC: H04W24/10 ,  H04W72/04 ,  H04W72/06 ,  H04B17/24 ,  H04B7/26 ,  H04B7/06 ,  H04B7/0456 ,  H04B7/024 ,  H04L5/00 ,  H04L1/00

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 CSI process for channel state information (CSI) reporting. Embodiments also contemplate aperiodic and/or periodic reporting of one or more report types (e.g., rank indicator (RI)) of CSI, perhaps based on one or more reporting modes that may be configured for each of the one or more CSI process.

公开(公告)号：US20210084482A1

公开(公告)日：2021-03-18

申请号：US17108942

申请日：2020-12-01

Applicant: InterDigital Patent Holdings, Inc.

Inventor： Gwenael Poitau ,  Ghyslain Pelletier ,  Marian Rudolf ,  Benoit Pelletier ,  Paul Marinier ,  Diana Pani

IPC: H04W8/00 ,  H04W76/14 ,  H04W72/04

Abstract: Physical layer processing and procedures for device-to-device (D2D) discovery signal generation and transmission and scheduling of D2D discovery signals are described. Detection and measurement of a D2D discovery signal, D2D signal identity management, and monitoring by a wireless transmit/receive unit (WTRU) of PDCCH for D2D discovery scheduling is described, as is a WTRU that may be configured with a D2D-specific transmission/reception opportunity pattern. The discovery signal may carry a payload for explicit information about user and/or service identity, and may be mapped to physical resources in such a way as to decouple transmission/reception of the discovery signal from downlink operations. A WTRU may measure a D2D discovery signal quality and report to the network.