InterDigital Patent Holdings, Inc. patent applications published on November 30th, 2023

Summary of the patent applications from InterDigital Patent Holdings, Inc. on November 30th, 2023

InterDigital Patent Holdings, Inc. has recently filed several patents related to wireless communication and optimization techniques. These patents cover a range of topics including artificial intelligence (AI) filtering, positioning in wireless systems, transmit power control (TPC) schemes, discontinuous reception cycles, coverage enhancement modes, mobility actions in integrated access and backhaul (IAB), multicast/broadcast service (MBS) continuity, relay communications, broadcast service negotiation, and control channel and shared channel transmissions at high frequencies.

Notable applications include:

- Wireless communication using AI filtering: The patent application proposes using AI filtering to optimize transmission parameters and improve data processing in wireless communication.

- Positioning in wireless systems: This patent application focuses on improving measurement reporting, behavior during multi-beam channel scans, behavior in the presence of multipath, and behavior during reporting to acquire correction information from the network to enhance the accuracy and efficiency of positioning in wireless systems.

- Transmit power control (TPC) scheme in WLAN: This patent application aims to improve the synchronization and scheduling of uplink multi-user transmissions by coordinating transmit power adjustments between access points (APs) and stations (STAs).

- Discontinuous reception cycle for power saving: The patent application describes a power-saving technique that allows a wireless transmit/receive unit (WTRU) to enter a sleep state while still receiving/transmitting data by adjusting the duration of awake and sleep states based on transmission patterns.

- Coverage enhancement modes: This patent application focuses on enhancing coverage for devices in certain modes of operation by receiving coverage enhancement system information blocks (CE-SIBs) on a physical downlink shared channel (PDSCH) and utilizing known locations or parameters for the CE-SIBs.

- Mobility actions in integrated access and backhaul (IAB): This patent application involves a WTRU determining traffic load information associated with a parent node, measuring received power of candidate parent nodes, selecting a candidate parent node, and performing a mobility action to connect to the selected candidate parent node while considering the determined traffic load information.

- MBS continuity across different cells: This patent application enables the continuity of multicast/broadcast service (MBS) across different cells in a wireless network by assisting user equipment (UE) in evaluating and selecting the appropriate cell, conducting quality measurements for MBS, and reconfiguring the UE with an MBS configuration during handover.

- Relay communications: This patent application focuses on establishing data links between wireless transmit/receive units (WTRUs) based on security policies and maximum data rates, allowing for PDU session establishment and end-to-end security policy compatibility.

- Broadcast service negotiation and non-simultaneous transmit-receive (STR) channel blindness recovery: This patent application involves a WTRU operating over two different links, sending transmissions based on Network Allocation Vector (NAV) settings, and indicating the capability of performing multi-link restricted transmissions.

- Control channel and shared channel transmissions at high frequencies: This patent application improves control channel and shared channel transmissions at high frequencies by determining modulation and coding schemes (MCS), time and frequency domain resource assignments, and receiving downlink transmissions based on the determined assignments.

Overall, InterDigital Patent Holdings, Inc. has filed a range of patents aimed at optimizing wireless communication, improving positioning accuracy, enhancing power-saving techniques, ensuring coverage in different modes, enabling seamless MBS continuity, establishing relay communications, negotiating broadcast services, and improving control channel and shared channel transmissions at high frequencies.

Patent applications for InterDigital Patent Holdings, Inc. on November 30th, 2023

METHODS AND APPARATUS FOR MIMO TRANSMISSION (18234150)

Main Inventor

Oghenekome Oteri

Brief explanation

- The patent application describes methods for multiple input-multiple output (MIMO) transmission.

- One method involves sensing radio frequency (RF) energy on a channel using multiple antenna chains in different time durations. - If the channel is sensed as busy in the first time duration, it indicates that the channel is occupied. - If the channel is sensed as not busy in the second time duration, it indicates that the channel is available for transmission. - Another method involves sending the energy level sensed during the second time duration, along with a frame that includes timing information for MIMO transmission. - The MIMO transmission is then sent using the indicated timing information and the multiple antenna chains.

Abstract

Methods for multiple input-multiple output (MIMO) transmission are provided herein. A method may include sensing, using at least one of a plurality of antenna chains, radio frequency (RF) energy on a channel in a first time duration and may indicate the channel is busy. RF energy may be sensed on the channel using the at least one of the plurality of antenna chains in a second time duration and may indicate the channel is not busy. A method may include sending energy level sensed during the second time duration, a frame using the at least one of the plurality of antenna chains. The frame may indicate timing information associated with a MIMO transmission. The MIMO transmission may be sent using the indicated timing information and the at least one of the plurality of antenna chains.

METHODS, APPARATUSES AND SYSTEMS DIRECTED TO ENHANCED CONTROL CHANNEL AND SHARED CHANNEL TRANSMISSIONS AT HIGH FREQUENCIES (18031810)

Main Inventor

Young Woo KWAK

Brief explanation

The patent application is about methods, apparatuses, and systems for improving control channel and shared channel transmissions at high frequencies.

• The method involves receiving downlink control information that includes details about modulation and coding scheme (MCS), time domain resource assignment, and frequency domain resource assignment.
• Based on the MCS, the method determines the subcarrier spacing (SCS) and cyclic prefix (CP) length.
• Using the SCS and CP length, the method then determines the time and frequency domain resource assignments.
• Finally, the method receives a downlink transmission at the specified time and frequency resources associated with the determined assignments.

Abstract

Methods, apparatuses and systems directed to enhanced control channel and shared channel transmissions at high frequencies are provided. Among the methods is a method that may include any of receiving downlink control information indicating a modulation and coding scheme (MCS), a time domain resource assignment, and a frequency domain resource assignment; obtaining a subcarrier spacing (SCS) and a cyclic prefix (CP) length based on the MCS; determining the time and frequency domain resource assignments based on the SCS and the CP length; and receiving a downlink transmission at time and frequency resources associated with the time and frequency domain resource assignments.

METHODS FOR POWER EFFICIENT BROADCASTING IN WLAN (18032383)

Main Inventor

Xiaofei Wang

Brief explanation

- This patent application describes systems, methods, and devices for broadcast service negotiation and non-simultaneous transmit-receive (STR) channel blindness recovery.

- The methods involve a Wireless Transmit/Receive Unit (WTRU) operating over two different links and receiving a frame with a Network Allocation Vector (NAV) setting associated with the second link. - The NAV setting indicates a time duration, and the WTRU sends a transmission over the first link that is shorter than or equal to the indicated time duration. - The frame with the NAV setting specifies that the time duration cannot be extended or modified. - The WTRU also sends an indication that it is capable of performing a multi-link restricted transmission. - After sending the transmission over the first link, the WTRU may enter a sleep mode on the first link.

Abstract

Systems, methods, and devices for broadcast service negotiation and non-simultaneous transmit-receive (STR) channel blindness recovery are provided herein. Some methods performed by a Wireless Transmit/Receive Unit (WTRU), may comprise operating over a first link; operating over a second link; receiving a frame including a Network Allocation Vector (NAV) setting associated with the second link, the NAV setting indicating a time duration; and sending a transmission over the first link, wherein a duration of the transmission over the first link is shorter than or equal to the time duration indicated by the NAV setting. The frame including the NAV setting indicates that the time duration may not be extended or modified. The method may further comprise sending, by the WTRU, an indication that it the WTRU is capable of performing a multi-link restricted transmission. The WTRU may enter a sleep mode on the first link after sending the transmission over the first link.

METHODS, APPARATUS, AND SYSTEMS FOR COMMUNICATIONS SECURITY WITH PROXIMITY SERVICES RELAY WTRU (18033117)

Main Inventor

Samir Ferdi

Brief explanation

The patent application describes methods, apparatus, and systems for a wireless transmit receive unit (WTRU) to perform relay communications.

• The WTRU receives a message indicating a security policy and maximum data rate for integrity protection supported by a remote WTRU.
• The WTRU transmits a message to the network indicating the supported maximum data rate and a request for PDU session establishment.
• The WTRU receives a message from the network indicating a second security policy for a second data link.
• The WTRU establishes the first data link with the remote WTRU if the end-to-end security policy is compatible with the second security policy.
• The end-to-end security policy is determined based on the second security policy and a UP security policy of the relay WTRU.

Abstract

Methods, apparatus, and systems for a wireless transmit receive unit (WTRU) performing relay communications are provided. A method may include receiving a first message indicating: (1) a first security policy associated with a first data link, and (2) a maximum data rate for integrity protection (MDRIP) supported by the remote WTRU; transmitting, to a network, a second message indicating: (1) an MDRIP supported by the remote WTRU or by the relay WTRU, and (2) a request for PDU session establishment; receiving, from the network, a third message indicating a second security policy for a second data link; and establishing the first data link with the remote WTRU on the condition that an end-to-end (e2e) security policy is compatible with the second security policy, wherein the e2e security policy is determined according to the second security policy and a UP security policy of the relay WTRU.

MULTICAST-BROADCAST SERVICES MOBILITY AND SERVICE CONTINUITY (18249760)

Main Inventor

Rocco DI GOROLAMO

Brief explanation

- The patent application is about technology that allows for the continuity of Multicast/Broadcast Service (MBS) across different cells in a wireless network.

- When a user equipment (UE) is in idle or inactive mode, it can receive MBS assistance information that includes scheduling information for MBS reception windows. This helps the UE evaluate and select the appropriate cell to connect to. - When a UE is in connected mode, it can conduct quality measurements for MBS and report them to the network. The network can then reconfigure the UE with an MBS configuration for a target cell. If there are differences in MBS transmission progress between the source cell and the target cell, the UE can recover lost MBS data or delete duplicate data accordingly. - The network apparatus, such as a gNB (gNodeB), can map a GPRS Tunneling Protocol Sequence Number of an MBS data unit to a Packet Data Convergence Protocol Sequence Number in a target cell. This helps in determining the MBS configuration to be used by a UE requesting a handover.

Abstract

Wireless User Equipment, UE, and network apparatuses may be adapted to facilitate continuity of Multicast/Broadcast Service, MBS, across cells. A UE in idle/inactive mode, for example, may receive MBS assistance information comprising scheduling information defining MB S reception windows and perform a cell re selection evaluation process accordingly. An UE in connected mode may conduct and report MB S quality measurements and receive an RRC reconfiguration comprising an MB S configuration for a target cell, determine that MBS transmission progress differs between the source cell and the target cell, and recover lost MBS PDUs or delete duplicate MBS PDUs accordingly. A network apparatus, such as a gNB for example, may map a GPRS Tunneling Protocol Sequence Number of an MBS PDU, to a Packet Data Convergence Protocol Sequence Number in a target cell, and determine an MB S configuration for use by a UE requesting a handover accordingly.

METHODS AND APPARATUS FOR CONDITIONAL RECONFIGURATION IN INTEGRATED ACCESS AND BACKHAUL (IAB) (18032738)

Main Inventor

Martino Freda

Brief explanation

- The patent application is about methods and apparatus for a mobility action in IAB (Integrated Access and Backhaul) in wireless communication networks.

- The method involves a Wireless Transmit/Receive Unit (WTRU) determining traffic load information associated with a parent node. - The WTRU also measures the received power of candidate parent nodes. - Based on the measured received power, a candidate parent node is selected. - A mobility action is then performed to connect to the selected candidate parent node, taking into account the determined traffic load information. - Finally, a message is transmitted to a child node, indicating the selected candidate parent node.

Abstract

The disclosure pertains to methods and apparatus for a mobility action in IAB in wireless communication networks. A method implemented in a Wireless Transmit/Receive Unit (WTRU) may comprises the steps of: determining traffic load information associated with a parent node; measuring received power of candidate parent nodes; selecting a candidate parent node based on the measured received power; performing a mobility action to the selected candidate parent node based on the determined traffic load information; and transmitting, to a child node, a message, the message comprising an information indicating the selected candidate.

METHOD AND APPARATUS FOR SYSTEM INFORMATION BLOCK (SIB) ACQUISITION FOR WIRELESS TRANSMIT/RECEIVE UNITS (WTRUS) IN NON-CE AND COVERAGE ENHANCED (CE) MODES (18231671)

Main Inventor

Moon-il Lee

Brief explanation

- The patent application describes a method and apparatus for determining whether a device is in a coverage enhancement (CE) mode or a non-CE mode.

- If the device is determined to be in the CE mode, it receives a CE-system information block (CE-SIB) on a physical downlink shared channel (PDSCH). - The CE-SIB is received based on either a known location or at least one known parameter for the CE-SIB. - The purpose of this method is to enhance coverage for the device in certain modes of operation.

Abstract

A method and apparatus are described. A method includes determining whether the apparatus is in a coverage enhancement (CE) mode or a non-CE mode. The method further includes receiving a CE-system information block (CE-SIB) on a physical downlink shared channel (PDSCH) based on at least one of a known location or at least one known parameter for the CE-SIB, on a condition that the WTRU is determined to be in the CE mode.

WIRELESS TRANSMIT RECEIVE UNIT (WTRU) REACHABILITY (18234005)

Main Inventor

J. Patrick Tooher

Brief explanation

The patent application describes a wireless transmit/receive unit (WTRU) that uses a discontinuous reception cycle to save power while still receiving/transmitting data.

• The WTRU has an awake state and a sleep state.
• In the awake state, the WTRU monitors a specific channel for a certain amount of time.
• During the remaining time, the WTRU enters a sleep state to reduce power consumption.
• The WTRU expects to receive one or more transmissions during the awake state before entering the sleep state.
• The duration of the awake state and subsequent sleep states is determined based on whether the WTRU receives a transmission and the purpose of the transmission.
• The WTRU can adjust the sleep state timer based on previous sleep state and awake state timer values.

Abstract

A wireless transmit/receive unit (WTRU) may receive/transmit data by employing a discontinuous reception cycle, which may include an awake state and a sleep state. For example, while in an awake state, a WTRU may monitor a PDCCH for a subset of time instances. During the remaining time instances, the WTRU may enter a sleep state, in which the WTRU may switch its receiving circuitry off (e.g., to reduce power consumption). A WTRU may receive (e.g., may expect to receive) one or more transmissions, during an awake state, before entering a sleep state. The durations of an awake state and/or the durations of subsequent sleep states may be determined based on whether the WTRU receives a transmission during the awake state and/or what the transmission was for. The WTRU may modify the value of a sleep state timer based on previous sleep state and/or awake state timer values.

MULTI-USER POWER CONTROL METHODS AND PROCEDURES (18233940)

Main Inventor

Hanqing Lou

Brief explanation

This patent application describes methods and systems for operating in a WLAN, specifically focusing on a transmit power control (TPC) scheme. The goal is to improve the synchronization and scheduling of uplink multi-user transmissions.

• The access point (AP) sends a trigger frame to one or more stations (STAs) to coordinate their transmissions.
• The trigger frame includes an open-loop power control index 1 and a power adjustment index 2.
• The STAs use the indicated AP transmit power and received power to estimate pathloss and set a baseline transmit power.
• During the uplink transmission period, the STAs adjust their transmit power to match the indicated target receive power at the AP.

Abstract

Methods and systems for operation in a WLAN are provided. Methods and systems for a transmit power control (TPC) scheme are disclosed. In an embodiment, an access point (AP) may send a trigger frame to one or more stations (STAs) for synchronizing and scheduling uplink (UL) multi-user (MU) transmissions. The trigger frame may contain an open-loop power control index 1 and a power adjustment index 2. The one or more STAs may estimate pathloss using an indicated AP transmit power and received power to set a baseline transmit power. The one or more STAs may adjust their transmit power in the UL transmission period to be the indicated target receive power at the AP.

POSITIONING IN WIRELESS SYSTEMS (18031767)

Main Inventor

Fumihiro Hasegawa

Brief explanation

- This patent application is related to positioning in wireless systems.

- It discloses various features that can be implemented in a wireless transmit/receive unit (WTRU) to improve measurement reporting, behavior during a multi-beam channel scan, behavior in the presence of multipath, and behavior during reporting to acquire correction information from the network. - One feature involves the WTRU receiving a PRS transmission via multiple paths, which are associated with different beams. - The WTRU then reports the Rx-Tx time differences associated with the reception of the PRS transmission via multiple paths. - The WTRU also transmits respective SRSp's (Signal Reference Points) associated with the respective paths. - These features aim to enhance the accuracy and efficiency of positioning in wireless systems.

Abstract

Systems, methods, and instrumentalities are disclosed herein associated with positioning in wireless systems. Features may be implemented, for example, in the behavior of a wireless transmit/receive unit (WTRU) for measurement reporting during a multi-beam channel scan, in WTRU behavior during a measurement report in the presence of a multipath, and/or in WTRU behavior during reporting to acquire correction information from the network. A WTRU may receive a PRS transmission via multiple paths, wherein the paths may be associated with the beams. The WTRU may report Rx−Tx time differences associated with the reception of the PRS transmission via multiple paths and transmission of respective SRSp's associated with the respective paths.

METHODS, APPARATUS, AND SYSTEMS FOR ARTIFICIAL INTELLIGENCE (AI)-ENABLED FILTERS IN WIRELESS SYSTEMS (18032476)

Main Inventor

Yugeswar DEENOO

Brief explanation

The patent application describes methods, apparatus, and systems for wireless communication using artificial intelligence (AI) filtering. Here are the key points:

• The wireless transmit/receive unit (WTRU) receives a transmission that includes a data unit (DU) on a specific set of resources.
• The WTRU selects an AI filter based on the set of resources and inputs the DU or a part of it to the selected AI filter.
• The WTRU performs AI filtering on the inputted DU to generate either a set of AI-based transmission parameters or an AI-processed DU.
• The AI-processed DU can consist of a first portion processed by the AI filter and a second portion processed by a rule-based component, or it can be solely processed by the AI filter.
• The WTRU can transmit either the AI-processed DU using a set of rule-based transmission parameters or a rule-based DU using the AI-based transmission parameters.

Overall, the patent application proposes using AI filtering in wireless communication to optimize transmission parameters and improve data processing.

Abstract

Methods, apparatus and systems are disclosed. One method may include a wireless transmit/receive unit (WTRU) receiving a transmission including a data unit (DU) on a first set of resources. The WTRU may select an artificial intelligence (AI) filter based on the first set of resources and input the DU or a part of the DU to the selected AI filter. The WTRU may perform AI filtering on the inputted DU or part thereof to output any of: a set of AI-based transmission parameters or an AI-processed DU. The AI-processed DU may include: a first portion of the DU processed by the AI filter and a second portion of the DU processed by a rule-based component, or the DU processed by the AI filter. The WTRU may transmit any of: the AI-processed DU using a set of rule-based transmission parameters, or a rule-based DU using the AI-based transmission parameters.