1239 results about "Discontinuous reception" patented technology

Methods, apparatus and systems for scheduling and transmission of system information in a wireless communication are disclosed. In one embodiment, a method performed by a wireless communication node is disclosed. The method comprises: transmitting, to a first wireless communication device having a first device type, a first configuration associated with the first device type for the first wireless communication device to perform paging occasion monitoring, wherein a device having the first device type is a reduced capability device or is configured with extended discontinuous reception (eDRX); and transmitting, to a second wireless communication device having a second device type, a second configuration associated with the second device type for the second wireless communication device to perform paging occasion monitoring, wherein a device having the second device type is not a reduced capability device and not configured with eDRX.

Example embodiments of the present disclosure relate to Layer 1 / Layer 2 (L1 / L2) Triggered Mobility (LTM) interworking with Cell Discontinuous Transmission (DTX) / Discontinuous Reception (DRX) at a target cell. According to one or more embodiments, a system may include a distributed unit (DU) that may be configured to determine, based on an active duration of a Cell DTX / DRX cycle associated with an inter-frequency cell, an optimal measurement gap (MG). Further, the DU may be configured to provide, to a user equipment (UE), information of the optimal MG, wherein the information of the optimal MG may be utilized by the UE to perform an inter frequency measurement.

Embodiments of the subject application relate to methods and apparatuses of a power saving mechanism for extended reality (XR) traffic. According to an embodiment of the subject application, a user equipment (UE) includes a processor and a transceiver coupled to the processor; and the processor is configured to: receive a first configuration for one or more serving cells in a discontinuous reception (DRX) group via the transceiver from a network, wherein the first configuration includes at least one of: DRX cycle information used for determining a non-integer length value of a DRX cycle; or DRX start offset information which indicates an offset value related to a reference system frame number (SFN) in a time domain; and determine first start timing of an on-duration window for the DRX group in the time domain according to at least one of the DRX cycle information or the DRX start offset information.

Provided are a method and apparatus for performing cell DTX and / or cell DRX in a wireless communication system. The method may include receiving cell discontinuous transmission (DTX) and cell discontinuous reception (DRX) configuration information, receiving an activation operation of cell DTX and / or cell DRX based on the cell DTX and cell DRX configuration information, and monitoring a physical downlink control channel (PDCCH) after performing the activation operation of the cell DTX and / or the cell DRX, in which the monitoring of the PDCCH is performed based on active time of the cell DTX.

An access network device receives first information from an access and mobility management function network element. The first information carries a data size of downlink data of a terminal device buffered in a user plane function network element or a session management function network element, the terminal device is in an inactive state, and an extended discontinuous reception cycle is configured by the access network device for the terminal device. The access network device determines, based on the data size of the downlink data, that the downlink data is small data. The access network device sends a first indication to the terminal device, to indicate the terminal device to perform small data transmission, and a second indication to the user plane function network element, to indicate the user plane function network element to send the small data to the access network device.

A method for enabling a wireless communication device to access services provided by a Radio Access Network, a user equipment (UE), a base station (BS) and a non-transitory computer readable storage medium are provided. In the method, a discontinuous reception (DRX) cycle is configured with a DRX ON period for transmission of at least one of control information or data and a DRX OFF period during which the transmission is suspended, and specifically the DRX cycle is a specific DRX cycle having a non-integer duration. This can eliminate a mismatch between burst arrival interval and the DRX cycle to adapt the EXtended Reality (XR) / Cloud Gaming (CG) traffic, for example.

Embodiments of the present disclosure provide an apparatus and method for beam failure recovery between a UE and a base station operating in a discontinuous reception (DRX) mode. In an embodiment, the UE receives a frame from a base station for determining a radio link quality of a physical downlink control channel (PDCCH). The UE determines whether the frame is received only during the DRX ON state of the DRX mode and that the radio link quality of the PDCCH is less than an acceptable quality threshold. In response, the UE transmits a recovery message to the base station indicating a change to a communication beam used to receive the frame.

A discontinuous reception (DRX) method, a terminal device, and a network device are provided. The method can include the following. A terminal device starts a first timer at a first time after a time when a low-power wake-up signal (LP-WUS) is received by the terminal device, where the first timer is a drx-onDuration timer. A duration of the first timer is configured by a network device. The terminal device is in a radio resource control (RRC)_CONNECTED state and in a low-power receiver state. The method further includes the following. The terminal device monitors the LP-WUS, and wakes up a main radio in a case where the LP-WUS is received by the terminal device.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may report, from a first layer of the UE to a second layer of the UE, a failure to receive an activation message or a deactivation message associated with a cell discontinuous operation in accordance with information differentiating a first communication during active periods of the cell discontinuous operation from a second communication outside of the active periods. The UE may transmit, to a network entity, a message indicating the failure to receive the activation message or the deactivation message. Additionally, or alternatively, the UE may change an activation status of a cell discontinuous transmission (DTX) or discontinuous reception (DRX) configuration at the UE based on the reporting of the failure to receive the activation message or the deactivation message.

A user equipment (UE) may comprise: receiving a UE-specific discontinuous reception (DRX) configuration and a cell-specific DRX configuration; performing first predetermined operations during a first active time according to the cell-specific DRX configuration; and performing second predetermined operations during a time other than the first active time according to the cell-specific DRX configuration.

A method for managing measurement gaps. A base station transmits, to a user equipment (UE), a configuration for enabling transmission and reception during measurement gaps (MGs) of the UE. The base station transmits a dynamic configuration in a Downlink Control Information (DCI) format for skipping measurements by the UE during a measurement gap. The dynamic configuration includes at least one of a one-bit indication for indicating whether to skip a measurement gap, a priority level assigned to the MGs, a priority level assigned to configured grants (CGs), a priority level for a discontinuous reception (DRX) configuration, or a skip type indicator. The one-bit indication corresponds to the measurement gap occurring after a predetermined time offset from reception of the DCI format.

A wireless device receives one or more configuration parameters for a two-step random access channel (RACH) procedure. The wireless device transmits, based on the configuration parameters, a message, for the two-step RACH, comprising a preamble and a transport block. The wireless device receives, during a discontinuous reception (DRX) active time of a DRX operation of the wireless device, a response to the message. The DRX active time may be based on a time window for receiving the response to the message. The time window may start at least one symbol after a transmission occasion of the transport block.

A method can include receiving, by a wireless device, radio resource control (RRC) messages that include parameters of a multicast and broadcast service (MBS). The parameters can include a discontinuous reception (DRX) hybrid automatic repeat request (HARQ) round trip time (RTT) timer; a DRX retransmission timer; and a feedback indicator indicating whether HARQ feedback is enabled. The method can also include receiving a group common downlink control information (DCI) scheduling a transport block (TB) of the MBS. The method can further include, in response to the feedback indicator indicating that HARQ feedback is enabled: transmitting a HARQ feedback with a negative value based on the TB being unsuccessfully decoded; and starting the DRX HARQ RTT timer after transmitting the HARQ feedback. The method can additionally include starting the DRX retransmission timer based on an expiry of the DRX HARQ RTT timer.

A system and method for wireless communication are disclosed herein. One embodiment includes a wireless communication node configuring a plurality of carriers and selecting one of the plurality of carriers for sending a paging message to a wireless communication device based on a Discontinuous Reception (DRX) parameter specific for the wireless communication device. An alternate embodiment includes a wireless communication device selecting one of a plurality of carriers for receiving a paging message to a wireless communication device based on a Discontinuous Reception (DRX) parameter specific for the wireless communication device.

A user equipment (UE) performs a method for monitoring paging from a non-terrestrial network (NTN). The UE receives via the NTN (i) a configuration for the UE to monitor paging messages from the NTN during a paging time window (PTW) while the UE operates in a non-connected state, and (ii) an PTW extension indication indicating that the UE is allowed to adjust the PTW. The UE modifies the PTW based on at least one NTN coverage time interval during which the UE has NTN coverage. The UE then modifies the PTW based on at least one NTN coverage time interval during which the UE has NTN coverage.

Provided are a method and apparatus for performing cell DTX and / or cell DRX in a wireless communication system. The method may include receiving cell discontinuous transmission (DTX) and cell discontinuous reception (DRX) configuration information, receiving an activation operation of cell DTX and / or cell DRX based on the cell DTX and cell DRX configuration information, and monitoring a physical downlink control channel (PDCCH) after performing the activation operation of the cell DTX and / or the cell DRX, in which the monitoring of the PDCCH is performed based on active time of the cell DTX.

Provided are a discontinuous reception (DRX) operation method of a terminal in a wireless communication system and an apparatus applying the method. The method comprises the steps of: receiving, from a base station, first configuration information which indicates a monitoring occasion for detecting first DCI comprising information that indicates whether the terminal has woken up; receiving, from the base station, second configuration information which indicates an operation to be applied to the terminal when the first DCI is not detected; monitoring a first PDCCH in order to detect the first DCI in the monitoring occasion; and when the first DCI fails to be detected in the monitoring occasion, monitoring a second PDCCH for detecting not the first DCI but second DCI in a next DRX-on duration on the basis of the second configuration information.

The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates. A method for operating a sidelink relay in a wireless communication system according to an embodiment of the present disclosure comprises the steps of: receiving, from a terminal, a first message including assistance information relating to a sidelink discontinuous reception mode (DRX) between the sidelink relay and the terminal; and transmitting, to the terminal, a second message including configuration information relating to the sidelink discontinuous reception mode. The assistance information included in the first message may include at least one of a sidelink DRX cycle, sidelink timer information, and a sidelink start offset, which are preferred by the terminal.

Systems and methods for User Equipment (UE) operation in presence of Clear Channel Assessment (CCA) are provided. In some embodiments, a method performed by a wireless device for cell selection accounting for requirements includes: determining a measurement period in a serving cell for the cell selection or cell re-selection (T1), wherein the measurement period is determined based on a number of consecutive Discontinuous Reception (DRX) cycles; determining a number of measurement occasions configured with a Discovery Reference Signal (DRS) in the serving cell during T1; determining availability of the DRS at the measurement occasions; and performing measurement based on availability of the DRS at the measurement occasions during T1. In this way, a wireless device may operate in NR RRC_IDLE / RRC_INACTIVE in the presence of CCA, e.g., Listen-Before-Talk (LBT).

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may operate in a first state and to transmit, to a network entity, a request to transition from the first state to a second state based on data activity between the UE and the network entity. The UE may transition from the first state to the second state based on transmitting the request to the network entity. The UE may perform the state transition based on a configuration from the network entity. The network entity may configure the UE to autonomously transition states based on transmitting the request or may configure the UE to receive a response message from the network prior to transitioning states. The UE may request to transition to a particular state, which may be selected by the UE.

A method may include monitoring, by a user equipment, a first wake up signal prior to a paging occasion during a discontinuous reception cycle. The method may also include decoding a physical downlink control channel based on the paging occasion in response to detecting the first wake up signal. The method may also include determining that the decoding failed. The method may further include switching to a common paging occasion to decode the physical downlink control channel after determining that the decoding failed.

A wireless device receives a discontinuous reception (DRX) configuration. The wireless device starts, based on the DRX configuration, a first DRX timer in response to a new transmission associated with one or more data packets. The wireless device receives downlink control information (DCI) indicating an end of the one or more data packets. The wireless device transmits feedback information of the DCI. The wireless device stops, based on transmitting the feedback information, the first DRX timer.

Described herein are systems, methods and instrumentalities associated with power saving in a wireless communication system. A wireless transmit / receive unit (WTRU) in the system may receive configuration information regarding a discontinuous reception (DRX) mode and a low-power wake-up signal (WUS). The WTRU may enter the DRX mode and monitor for the low-power WUS. The WTRU may determine whether to wake up during an on duration of the DRX mode based on whether the low-power WUS is received or based on information included in the low-power WUS.

A wireless communication method for use in a wireless terminal is disclosed. The method comprises receiving, from a wireless network node, a radio resource control, RRC, signaling indicating that a discontinuous reception, DRX, group is configured by using a plurality of DRX configurations, and using DRX parameters configured by using the plurality of DRX configurations to perform a DRX operation for the DRX group, wherein start offsets of the plurality of DRX configurations are different

Systems and methods for implementing Discontinuous Reception (DRX) are provided. In some embodiments, a method performed by a User Equipment (UE) for implementing DRX includes: configuring a DRX scheme which is activated in certain conditions; implementing DRX at the UE during one or more of the group consisting of: from the time the UE receives an RRCRelease message; after the UE receives DL data; and until terminating a (MT-SDT) session. This can result in significant energy benefits at the UE end. Some embodiments enable DRX during the MT-SDT procedure. The advantage of the solution is reduced energy consumption by the UE by saving the energy spent by enabling DRX in the MT-SDT procedure.

Methods, systems, and devices for wireless communications are described. Wireless devices may be configured to support techniques for bi-directional discontinuous reception (DRX) alignment and centralized DRX alignment. In the context of bi-directional DRX alignment, DRX configurations at two respective user equipments (UEs) are first established in a first direction, and then DRX configurations are then established in the reverse direction based on the previously-established DRX configurations. In particular, DRX configurations in the reverse direction may be selected such that the Uu and sidelink DRX configurations are aligned at the respective UEs and across the UEs. Comparatively, in the context of centralized DRX alignment, a master base station receives “candidate” Uu and sidelink DRX configurations for multiple UEs, and selects Uu and sidelink DRX configurations for each UE from the sets of candidate DRX configurations in order to ensure DRX alignment across the respective UEs.

Methods, systems, and devices for wireless communication are described. A wireless device may receive first configuration information that defines a first schedule of occasions for reception of a low power wakeup signal via a first radio of the wireless device associated with low power operation. The wireless device may receive second configuration information that defines a periodic connected-mode discontinuous reception (C-DRX) cycle that includes a second schedule of periodic ON durations to monitor a physical downlink control channel (PDCCH) via a second radio of the wireless device, and receive the low power wakeup signal via the first radio of the wireless device in accordance with the first configuration information and in advance of, by at least a threshold amount, a start of a next ON duration or a next PDCCH message.

A method by which a terminal receives a signal in a wireless communication system, according to an embodiment, comprises: receiving a discontinuous reception (DRX) configuration and a semi-persistent scheduling (SPS) configuration; and receiving an SPS physical downlink shared channel (PDSCH) that is based on the SPS configuration, wherein the SPS PDSCH may include eXtended reality (XR) traffic, and the SPS configuration may switch to an inactive pending state in a DRX off-duration of each DRX cycle that is based on the DRX configuration.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitting (Tx) user equipment (UE) may perform, to a receiving (Rx) UE, a first sidelink transmission in an on duration of a sidelink discontinuous reception (DRX) cycle associated with a sidelink DRX configuration. The Tx may activate a sidelink DRX timer based at least in part on the sidelink DRX configuration, wherein the sidelink DRX configuration is associated with a destination identifier (ID) and one or more source IDs are associated with the destination ID, and wherein the sidelink DRX timer is operated per a pair of source ID and destination ID. Numerous other aspects are described.

A terminal includes a receiving unit configured to receive a parameter related to a DRX (Discontinuous reception) from a base station, and a control unit configured to control an operation of the DRX for each of a plurality of component carriers, based on the parameter and a subcarrier spacing applied to the component carrier.