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公开(公告)号:US12301326B2
公开(公告)日:2025-05-13
申请号:US17751356
申请日:2022-05-23
Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
Inventor: Yugeswar Deenoo , Tao Deng , Janet A. Stern-Berkowitz , Moon-il Lee , Mihaela C. Beluri , Ravikumar V. Pragada
Abstract: Methods and apparatus are described. A method, implemented in a wireless transmit/receive unit (WTRU) includes monitoring a first control channel search space (SS) associated with a first normal beam set comprising a first beam set. The WTRU initiates extended monitoring and monitors, subsequent to a trigger based on a measurement by the WTRU, a control channel SS associated with an extended beam set comprising the first beam set and one or more additional beam sets. The WTRU determines a second beam set from the extended beam set. The determination is based on a received control channel beam switch command or based on a control channel SS in which a beam switch command is received. The WTRU monitors a second control channel SS associated with a second normal beam set comprising the determined second beam set.
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公开(公告)号:US12267906B2
公开(公告)日:2025-04-01
申请号:US18779405
申请日:2024-07-22
Applicant: InterDigital Patent Holdings, Inc.
Inventor: Yugeswar Deenoo , Ghyslain Pelletier , Ping Hsuan Tan , Martino M. Freda
Abstract: Light and/or Inactive state connectivity and/or autonomous mobility techniques are contemplated. A WTRU may, for example, have an inactive/idle mode, a light connected/loosely connected/Inactive mode and/or a connected/fully connected/Active mode. A WTRU in light connected mode may have a WTRU context stored in a RAN. A WTRU may perform an area monitoring procedure while in light connected state. A WTRU may engage in autonomous mobility during light connectivity. A WTRU may move within a logical area (e.g., a RAN paging area), perhaps without notifying the network. The WTRU may provide notice when it has moved outside a logical area (e.g., update RAN paging area). Mobility in light connected state may be network controlled (e.g., to enable handover when data transfer may be allowed and/or ongoing). A WTRU may be reachable during a light connectivity state. A WTRU may engage in autonomous mobility during light connectivity and/or an Inactive state.
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公开(公告)号:US12256244B2
公开(公告)日:2025-03-18
申请号:US17429991
申请日:2020-02-11
Applicant: InterDigital Patent Holdings, Inc.
Inventor: Martino Freda , Paul Marinier , Diana Pani , Ghyslain Pelletier , Yugeswar Deenoo , Faris Alfarhan , Tao Deng , Tuong Duc Hoang , Chunxuan Ye , Moon Il Lee
IPC: H04W24/04 , H04L1/1812 , H04W76/28
Abstract: Methods and apparatuses are described herein for monitoring radio links between wireless transmit/receive units (WTRUs) and determining of radio link failure, and may be used, among others, for New Radio (NR) vehicular communication (V2X); a mode whereby WTRUs can communicate with each other directly. A radio link between a WTRU and another WTRU may be monitored independently per ongoing unicast and/or multicast link, and radio link failure (RLF) may be determined as a function of the monitoring.
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公开(公告)号:US12231974B2
公开(公告)日:2025-02-18
申请号:US18800673
申请日:2024-08-12
Applicant: InterDigital Patent Holdings, Inc.
Inventor: Yugeswar Deenoo , Dylan Duc Watts , Diana Pani , Paul Marinier , Mouna Hajir , Ghyslain Pelletier
IPC: H04W36/00 , H04B7/185 , H04W36/32 , H04W74/0833
Abstract: A method and apparatus for receiving a broadcast configuration indicating when a change in a RAN function termination occurs is provided, for example, by a timer value. The broadcast configuration may be received from a satellite, blimp or other moving transmitter. A dedicated configuration may also be received from the serving cell. The dedicated configuration may include a preamble, a transient configuration and an indication of a layer 2 behavior. If a WTRU detects a change in RAN function termination, the WTRU may suspend any uplink data transmissions, apply the transient configuration and transmit the preamble to a target cell. The WTRU may synchronize with the target cell and apply the layer 2 behavior.
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公开(公告)号:US12101673B2
公开(公告)日:2024-09-24
申请号:US18494385
申请日:2023-10-25
Applicant: InterDigital Patent Holdings, Inc.
Inventor: Yugeswar Deenoo , Dylan Duc Watts , Diana Pani , Paul Marinier , Mouna Hajir , Ghyslain Pelletier
IPC: H04W36/00 , H04B7/185 , H04W74/0833
CPC classification number: H04W36/0077 , H04B7/18513 , H04W74/0833
Abstract: A method and apparatus for receiving a broadcast configuration indicating when a change in a RAN function termination occurs is provided, for example, by a timer value. The broadcast configuration may be received from a satellite, blimp or other moving transmitter. A dedicated configuration may also be received from the serving cell. The dedicated configuration may include a preamble, a transient configuration and an indication of a layer 2 behavior. If a WTRU detects a change in RAN function termination, the WTRU may suspend any uplink data transmissions, apply the transient configuration and transmit the preamble to a target cell. The WTRU may synchronize with the target cell and apply the layer 2 behavior.
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公开(公告)号:US20240215071A1
公开(公告)日:2024-06-27
申请号:US18598565
申请日:2024-03-07
Applicant: InterDigital Patent Holdings, Inc.
Inventor: Yugeswar Deenoo , Mouna Hajir , J. Patrick Tooher , Ghyslain Pelletier , Paul Marinier
IPC: H04W74/0816 , H04W72/0453 , H04W74/00 , H04W74/0833
CPC classification number: H04W74/0816 , H04W72/0453 , H04W74/008 , H04W74/0841
Abstract: A WTRU may be configured to perform radio link monitoring (RLM) based on RLM reference signals (RLM-RSs) transmitted in a cell operating in an unlicensed spectrum. The WTRU may evaluate a radio link failure (RLF) status for the cell using a first RLM criteria based on the RLM-RSs. A transmission instance of the RLM-RSs may be skipped, for example, due to a listen before talk (LBT) failure at a gNodeB (gNB). The WTRU may adapt or change the first RLM criteria and/or evaluate the RLF status of the cell operating in the unlicensed spectrum using a second RLM criteria based on determining that the transmission instance of the RLM-RSs was skipped. The first RLM criteria may correspond to a first RLM process that utilizes a first set of RLM parameters. The second RLM criteria may correspond to a second RLM process that utilizes a second set of RLM parameters.
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公开(公告)号:US20240146598A1
公开(公告)日:2024-05-02
申请号:US18545663
申请日:2023-12-19
Applicant: InterDigital Patent Holdings, Inc.
Inventor: Tao Deng , Steven Ferrante , Ravikumar V. Pragada , Yugeswar Deenoo , Daniel R. Cohen , Janet A. Stem-Berkowitz , Moon-il Lee , Mihaela C. Beluri
CPC classification number: H04L27/2673 , H04B7/0695 , H04B7/088 , H04W48/12 , H04W48/16 , H04W56/001 , H04B7/0617 , H04L27/2666
Abstract: A method performed by a wireless transmit/receive unit (WTRU) may include receiving a configuration message including timing information for monitoring at least a subset of a plurality of beams to receive a set of synchronization signals and receiving the set of synchronization signals based on the timing information. The received set of synchronization signals include a primary synchronization signal and a secondary synchronization signal. The method may include receiving a reference signal along with a physical broadcast channel (PBCH) transmission. The reference signal comprises a sequence that is derived from an index associated with one of the at least the subset of beams and associated with the received set of synchronization signals. The method may include transmitting a random access channel (RACH) transmission. The RACH transmission includes a preamble sequence corresponding to the one of the subset of the plurality of beams.
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公开(公告)号:US20240023183A1
公开(公告)日:2024-01-18
申请号:US18476874
申请日:2023-09-28
Applicant: InterDigital Patent Holdings, Inc.
Inventor: Yugeswar Deenoo , Tao Deng , Martino M. Freda , Ghyslain Pelletier , Faris Alfarhan
Abstract: A system and methods for beam failure recovery and management for multi-carrier communications with beamforming are disclosed herein. A wireless transmit/receive unit (WTRU) may monitor for and detect a beam failure of a beam associated with a secondary cell (Scell). The WTRU may select an Scell candidate beam. The WTRU may transmit using a selected uplink (UL) resource in a primary cell (SpCell) a medium access control (MAC) control element (CE) including an indication of Scell beam failure and identifying the selected candidate beam. The WTRU may receive an Scell beam failure indication response on the SpCell indicating an SCell index and a downlink (DL) quasi co-location (QCL) reference associated with the Scell. The WTRU may verify that the DL QCL reference matches with the candidate beam. The WTRU may perform random access on the SCell using the selected QCL reference and the selected candidate beam.
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公开(公告)号:US20240022944A1
公开(公告)日:2024-01-18
申请号:US18477784
申请日:2023-09-29
Applicant: InterDigital Patent Holdings, Inc.
Inventor: Martino M. Freda , Yugeswar Deenoo , Ghyslain Pelletier
Abstract: A wireless transmit receive unit (WTRU) may operate in a dual connectivity (DC) context. While in a RRC_INACTIVE state, the WTRU may receive a paging message from a first cell, which may be associated with a master cell group (MCG). The paging message may indicate that the WTRU is to respond to the paging message on another cell. Also, or alternatively, the paging message may indicate that data for the WTRU is available on an SCG bearer. The WTRU may select a second cell (e.g., a cell other than the first cell) from a secondary cell group (SCG) list, which may include one or more secondary cells. The WTRU may initiate a random access channel procedure with the second cell based on receiving the paging message from the first cell. The WTRU may receive data from the second cell via the SCG bearer while in the RRC_INACTIVE state.
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公开(公告)号:US11848718B2
公开(公告)日:2023-12-19
申请号:US16534577
申请日:2019-08-07
Applicant: InterDigital Patent Holdings, Inc.
Inventor: Yugeswar Deenoo , Mouna Hajir , Patrick Tooher , Ghyslain Pelletier
CPC classification number: H04B17/327 , H04W36/00835 , H04W36/30 , H04W48/12 , H04W48/16 , H04W48/20 , H04W74/0816
Abstract: A wireless device for determining wireless channel metrics and/or cell quality when accessing wireless resources. For example, the wireless device may use the determined channel metrics and/or cell quality when performing cell selection and/or cell reselection procedures. The wireless device may use the determined channel metrics and/or cell quality to trigger and report cell or frequency measurements in one or more cells neighboring the device's serving cell. The wireless device may use (e.g., further use) the determined channel metrics and/or cell quality to select a beam or sub-band for initial access to a cell. The wireless device may be employed within a wireless communications network that utilizes unlicensed wireless spectrum.
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