4069 results about "Radio Resource Control" patented technology

Systems, methods, and instrumentalities are described herein for supporting low power high accuracy positioning (LPHAP). A wireless transmit / receive unit (WTRU) may receive configuration information (e.g., in a radio resource control (RRC) reconfiguration message) from a first cell. The configuration information may indicate a first sounding reference for positioning (SRSp) configuration and a second SRSp configuration. The first SRSp configuration may be associated with a first positioning area and the second SRSp configuration may be associated with a second positioning area. The first positioning area may include a first cell ID set and the second positioning area may include a second cell ID set. The first SRSp configuration may be activated and the second SRSp configuration may be deactivated.

A Layer 1-Layer 2 (L1 / L2) Triggered Mobility (LTM) handover (HO) procedure, and method. A gNB-Centralized Unit User Plane (gNB-CU-CP) sends Radio Resource Control (RRC) messages with LTM candidate cell configuration of LTM candidate gNB-DUs. Based on the RRC messages, a Layer (L1) Measurement Report is sent to the LTM candidate gNB-DUs. In response, the LTM candidate gNB-DUs determine whether a radio condition of the LTM candidate gNB-DUs meet a predetermined resource reservation criteria. Based on meeting the predetermined resource reservation criteria, the LTM candidate gNB-DUs initiate reservation of radio resources for an LTM candidate cell for a LTM cell switch. The LTM candidate gNB-DUs send to the gNB-CU-CP an updated LTM candidate cell configuration. The gNB-CU-CP sends the updated radio resource configuration to the UE via the serving gNB-DU.

A method performed by a terminal in a wireless communication system is provided. The method includes receiving, from a base station, a radio resource control (RRC) message including layer 1 (L1) / layer 2 (L2) triggered mobility (LTM) configuration information, the LTM configuration information including at least one LTM candidate configuration for at least one candidate cell, transmitting, to the base station, a report for an L1 measurement on the at least one candidate cell, receiving, from the base station via a medium access control (MAC) control element (CE), an LTM cell switch command based on the report, identifying whether a value of a timing advance command (TAC) in the MAC CE is set to a specific value, and in case that the value of the TAC is not set to the specific value, processing the TAC and performing a random access channel (RACH)-less LTM cell switch for a target cell identified by the MAC CE.

A wireless device receives from a first base station a radio resource control (RRC) message comprising a wireless device capability enquiry and transmits to the first base station an RRC message comprising a first parameter indicating support by the wireless device for recovering from a failure of a first serving cell by performing layer 1 and / or layer 2 triggered mobility (LTM) to a first selected cell based on the first selected cell being a candidate cell for LTM. The wireless device receives from a second base station an RRC message comprising an LTM configuration for cell switching to one or more LTM candidate cells of the second base station, where the LTM configuration indicates that the wireless device performs, after a failure of a second serving cell of the second base station, LTM to a second selected cell based on the second selected cell being a candidate cell for LTM.

Methods, apparatuses, and computer-readable storage medium for supporting mobile-originated small data transmission (MO-SDT) and mobile-terminated small data transmission (MT-SDT) or point-to-multi-point (P2M) multicast and broadcast services (MBS) are provided. An example method may include transmitting, to a base station, a capability indication representing support of MO-SDT and MT-SDT. The example method may further include receiving, from the base station, one or more configurations for the MO-SDT and the MT-SDT in a radio resource control (RRC) message, the RRC message comprising at least an RRC release message. The example method may further include transitioning to an RRC inactive state. The example method may further include transmitting, to the base station, a common control channel (CCCH) message in a MO-SDT transmission while in the RRC inactive state.

A method for indicating a beam on a service link of a smart repeater, performed by the smart repeater, and including: receiving a radio resource control (RRC) message. The RRC message configures information of a beam corresponding to the service link for the smart repeater.

A method performed by a UE for a DRX operation is provided. The method receives an RRC message for configuring a set of DRX configurations including at least a first DRX configuration that indicates first parameters for an integer DRX cycle. The method determines whether the set of DRX configurations includes a second DRX configuration indicating second parameters for a non-integer DRX cycle. The method determines whether to apply the first parameters or the second parameters based on whether the set of DRX configurations includes the second DRX configuration. The method starts, based on the first parameters, a DRX timer in a case that the set of DRX configurations does not include the second DRX configuration, and starts, based on the second parameters, the DRX timer in a case that the set of DRX configurations includes the second DRX configuration.

A wireless device receives, from a first base station, a RRC release message comprising a suspend configuration, wherein the suspend configuration comprises a configuration of a small data transmission (SDT) procedure indicating a radio bearer configured for the SDT procedure. The device suspends, based on the suspend configuration, one or more radio bearers comprising the radio bearer configured for the SDT procedure. Based on initiating the SDT procedure, the wireless device resumes the radio bearer configured for the SDT procedure; and transmits, to a second base station, a radio resource control (RRC) resume request message. The wireless device communicates with the second base station and during the SDT procedure, data associated with the SDT procedure, and transmits to the second base station and during the SDT procedure, a user equipment (UE) assistance information message comprising a non-SDT indication, wherein the non-SDT indication indicates availability of data mapped to a radio bearer which is not configured for the SDT procedure, and a resume cause associated with the data. The wireless device receives, from the second base station and after transmitting the UE assistance information message, an RRC response message.

A wireless device receives, from a base station, a radio resource control (RRC) reconfiguration message comprising a layer 1 / layer 2 triggered mobility (LTM) configuration. The LTM configuration comprises an LTM candidate configuration of a candidate cell and a value of a time alignment timer for determining whether a timing advance (TA) value of the candidate cell is valid. The wireless device receives, from the base station, a downlink control information (DCI) indicating the candidate cell and to transmit a random access preamble for acquiring the TA value of the candidate cell. Based on the DCI, the wireless device transmits, via the candidate cell, the random access preamble for acquiring the TA value of the candidate cell. The wireless device receives, from the base station, a medium access control (MAC) control element (CE) indicating an identifier of the LTM candidate configuration of the candidate cell and the TA value.

A wireless device transmits a user equipment (UE) capability message. The UE capability message comprises: a first parameter indicating, per cell, whether the wireless device supports two timing advance groups (TAGs) for intra-cell multiple transmission and reception point (multi-TRP) operation; and a second parameter indicating, per band combination, a maximum number of TAGs that the wireless device supports. The wireless device receives one or more radio resource control (RRC) messages indicating: transmission configuration indicator (TCI) states for uplink transmissions via a cell; and two TAGs for the cell. The wireless device receives downlink control information (DCI) indicating a TCI state among the TCI states for the cell. The TCI state is associated with a TAG among the two TAGs of the cell. The wireless device transmits, based on a timing advance of the TAG associated with the TCI state, an uplink transmission using the TCI state.

A method for small data transmission (SDT) in a power saving state and related devices are provided. The method, performed by a user equipment (UE), includes receiving a SDT configuration in a radio resource control (RRC) signaling; monitoring a downlink (DL) signaling including a mobile terminated (MT) indication in a physical downlink control channel (PDCCH) or paging occasion in the power saving state; and upon reception of the MT indication, receiving DL small data on an associated radio resource based on the SDT configuration without radio resource control (RRC) state transition. With this method, support with MT traffic transmission in the power saving state is realized.

Methods, systems, and apparatuses are provided for handling timing advance for cells in a wireless communication system, comprising a User Equipment (UE) receiving a configuration indicating at least one candidate cell including a first candidate cell, storing a first Timing Advance (TA) associated with the first candidate cell, and clearing or discarding the first TA associated with the first candidate cell in response to at least one of: expiry of a timer associated with the first TA; performing Radio Resource Control (RRC) re-establishment; the UE entering RRC_IDLE state or RRC_INACTIVE state; a serving cell change; and / or the UE storing a second TA when a list or a set of stored TAs for the at least one candidate cell is full.

According to embodiments, a UE receives, from a source cell, a mobility pre-configuration radio resource control (RRC) message for random-access channel (RACH)-less access. The mobility pre-configuration RRC message indicates target timing advance (TA) assistance information. The UE receives, from the source cell, a lower layer target access command. The lower layer target access command indicates a most updated or latest network-updated time sensitive dynamic TA assistance information. The UE determines a target cell TA of a target cell based on a latest source cell TA of the source cell, a latest measured timing difference between reference signals (RSs) from the source cell and from the target cell, the most updated or latest network-updated time sensitive dynamic TA assistance information, and the target TA assistance information. The UE performs the RACH-less mobility access to the target cell based on the target cell TA.

A user equipment (UE) is described. The UE may include receiving circuitry configured to receive a first radio resource control (RRC) message comprising first information used for configuring a Semi-Persistent Scheduling (SPS) physical downlink shared channel (PDSCH) configuration, to receive a second RRC message comprising second information used for configuring that deferring of SPS hybrid automatic repeat request-acknowledgement (HARQ-ACK) is supported, to receive a third RRC message comprising third information used for configuring cell switching (based on semi-static configuration and / or dynamic indication), and to receive, based on a detection of a physical downlink control channel (PDCCH) carrying a downlink control information (DCI) format with cyclic redundancy check (CRC) scrambled by a first radio network identifier (RNTI) for an activation of the SPS PDSCH, the SPS PDSCH transmission. The UE may also include transmitting circuitry configured to transmit HARQ-ACK information and configured to defer the HARQ-ACK information transmission.

A method (1300) by a user equipment, UE (402, 502, 602, 800), in a connected state is provided for configuring Layer 1 / Layer 2, L1 / L2, based inter-cell mobility. The method includes transmitting (1302) a Measurement Report comprising one or more measurements associated with one or more cells. The UE receives (1304) a Radio Resource Control, RRC, Reconfiguration message comprising at least one configuration of a L1 / L2 based inter-cell mobility candidate cell. The UE transmits (1306) an RRC Reconfiguration Complete message.

A wireless device transmits radio resource control (RRC) messages comprising capability parameters indicating support, for a layer 1 and / or layer 2 triggered mobility (LTM) procedure and within a measurement window, for synchronization signal block (SSB) based inter-frequency layer 1 reference signal received power (RSRP) measurement of a candidate cell with a received time difference, between the candidate cell and a serving cell, larger than a cyclic prefix (CP) length. The device receives RRC messages indicating a measurement window. The device receives a command indicating an uplink transmission of a L1 RSRP report of the candidate cell. The first cell and the candidate cell are inter-frequency configured. The device transmits the L1 RSRP report measured over one or more first SSBs of the candidate cell. The first SSBs are received: via the candidate cell with the received time difference being greater than the CP length, and within the measurement window.

A wireless device receives, via a serving cell, one or more radio resource control (RRC) messages comprising configuration parameters of a candidate cell for a layer 1 / 2 triggered mobility (LTM) procedure. The configuration parameters indicate a transmission power of a synchronization signal block (SSB) transmitted via the candidate cell. The wireless device receives a physical downlink control channel (PDCCH) order comprising a cell indicator indicating the candidate cell, an SSB index indicating the SSB of SSBs of the candidate cell, and a preamble index of a preamble. The wireless device transmits, via a physical random access channel (PRACH) occasion corresponding to the SSB of the candidate cell, the preamble using an uplink transmission power based on a measurement of a pathloss. The pathloss is determined based on the transmission power of the SSB, and a layer 3 filtered reference signal received power (RSRP) of the SSB.

Various aspects of the present disclosure generally relate to wireless communication and to layer 1 or layer 2 (L1 / L2) triggered mobility (LTM) for non-terrestrial networks (NTNs). In some aspects, a network node may transmit, and a user equipment (UE) may receive, a radio resource control (RRC) reconfiguration message associated with one or more LTM candidate NTN cells. The network node may transmit, and the UE may receive, an indication to perform LTM. In some aspects, the UE may perform, responsive to the one or more LTM candidate NTN cells being within a range of the UE, one or more layer 1 (L1) measurements associated with the one or more LTM candidate NTN cells. In some aspects, the UE may transmit, and the network node may receive, one or more L1 measurement reports associated with the one or more L1 measurements.

A wireless device receives one or more radio resource control (RRC) messages indicating a handover from a first cell to a second cell and a synchronization signal block (SSB), of the second cell, for receiving a downlink control information (DCI) from the second cell. The wireless device receives, from the second cell and based on a demodulation reference signal (DMRS) antenna port being quasi co-located with the SSB, the DCI scheduling an uplink transmission, wherein the uplink transmission is an initial uplink transmission, to the second cell, after receiving the one or more RRC messages indicating the handover. The wireless device transmits, to the second cell and based on the SSB indicated by the one or more RRC messages, the uplink transmission.

A wireless device receives, from a first base station, a RRC release message comprising a suspend configuration, wherein the suspend configuration comprises a configuration of a SDT procedure, and the configuration indicates a radio bearer configured for the SDT procedure. The wireless device suspends, based on the suspend configuration, one or more radio bearers comprising the radio bearer configured for the SDT procedure. Based on initiating the SDT procedure the wireless device resumes the radio bearer configured for the SDT procedure and transmits, to a second base station, a radio resource control (RRC) resume request message. The wireless device communicates with the second base station and during the SDT procedure, data associated with the SDT procedure, receives, from the second base station, a second RRC release message comprising a resume indication after completion of the SDT procedure, and initiates, based on the resume indication, an RRC resume procedure.

A user equipment and a method for performing a multi-Subscriber Identity Module (multi-SIM) operation are provided. The method includes connecting to a first network associated with a first Universal Subscriber Identity Module (USIM) of the UE; receiving, from the first network, a first configuration indicating that the UE is allowed to transmit an assistance information message for switching to a second network associated with a second USIM of the UE, the first configuration further including a configuration of a timer; transmitting, to the first network, the assistance information message, the assistance information message including information of a preferred Radio Resource Control (RRC) state associated with the first network to indicate that the UE prefers to switch from an RRC_CONNECTED state associated with the first network to the preferred RRC state; and starting the timer upon transmitting the assistance information message.

A method performed by a wireless device can include receiving, from a master base station associated with a master cell group, a radio resource control (RRC) reconfiguration message. The RRC message can include a configuration parameter of a secondary cell group (SCG) and a plurality of counters and can indicate that the plurality of counters is for subsequent cell group change. The method can also include transmitting, to the secondary base station and based on applying the configuration parameter of the SCG, a first RRC reconfiguration complete message using a first security key derived based on a first counter of the plurality of counters. The method can further include transmitting, to the secondary base station and based on applying the configuration parameter of the SCG, a second RRC reconfiguration complete message using a second security key derived based on a second counter of the plurality of counters.

A wireless device receives a radio resource control (RRC) release message indicating one or more configured grants (CGs) for small data transmission (SDT) in an RRC inactive state and one or more downlink reference signals (RSs) configured for the SDT. The wireless device also transmits an uplink signal using a transmission power, wherein a downlink pathloss value of the transmission power is based on a first downlink RS, of the one or more downlink RSs, identified for a most recent uplink transmission via a first CG of the one or more CGs during the SDT.

According to the technical solution of the present application, radio resource control (RRC) is recovered in response to meeting preset conditions. Provided is a process of quickly recovering RRC after LTM cell handover fails, so that a network device can know the reason why the LTM cell handover fails, and quickly recover connection on the basis of actual situations, thereby reducing the delay of recovering the connection and / or the duration of service interruption.

Embodiments of the present application relate to methods and apparatuses of handling a mobility configuration upon a reception of a notification message in a layer-2 (L2) UE-to-Network (U2N) relay case. According to an embodiment of the present application, a user equipment (UE) includes a processor and a transceiver coupled to the processor: and the processor is configured: to access a serving cell via a direct path or an indirect path, wherein the indirect path is associated with a relay UE; and to receive an radio resource control (RRC) reconfiguration message via the transceiver from the serving cell, wherein the RRC reconfiguration message includes at least one indication of: a measurement configuration; a conditional handover (CHO) configuration associated with at a candidate cell; an indication indicating whether the UE is triggered to report a measurement result of a candidate relay UE in response to identifying a cell change of the candidate relay UE; or a relay operation related configuration used by remote UE in response to accessing the serving cell via the indirect path.

A terminal can control an execution of a conditional handover and an execution of a procedure for an addition / change of a secondary cell, and transmit a radio resource control layer message. When the conditional handover and the procedure for the addition / change are configured simultaneously, or when an execution condition of the conditional handover and an execution condition of the procedure for the addition / change are met simultaneously, the terminal prioritizes either the conditional handover or the procedure for the addition / change according to a state of the message.

A wireless device receives, from a base station, one or more radio resource control (RRC) messages indicating two-step random access resources of a two-step random access type. The wireless device transmits, while the two-step random access type and a four-step random access type are available for receiving a preamble a random access procedure and based on the two-step random access resources comprising contention-free two-step random access resources, a preamble via the contention-free two-step random access resources.

Various embodiments of the present disclosure provide a method performed by an electronic device in a wireless communication system. The method may comprise receiving, from a base station (BS), a radio resource control (RRC) signal including information related to a number of bits in a downlink control information (DCI) field required to represent indicatable beams, receiving, from the base station, DCI including the DCI field for a beam indication of a beam used in an access link between the electronic device and at least one user equipment (UE) among the indicatable beams, and transmitting or receiving a signal with the at least one UE based on the beam indication.

Methods performed by a network node in a radio communication network are provided herein. Operations according to such methods include detecting a radio link failure on a master cell group and indicating to a user equipment whether to use a master cell group fast recovery procedure to avoid a radio resource control re-establishment.

The present disclosure describes mechanisms to configure user equipment (UEs) with a set of channel state information (CSI) and / or measurement configurations, and mechanisms to indicate codepoints that activate or trigger selected ones of the configured CSI / measurement configures that individual UEs are to use to report CSI and / or other measurements. The set of configurations can indicate how individual UEs are to compute CSI and / or measurement feedback reports. The set of configurations can include information about which subset of antenna ports from a set of antenna port configurations, and potential transmission power offsets between CSI reference signal (CSI-RS) and physical downlink shared channel (PDSCH). The signaling mechanisms can include radio resource control (RRC) for the CSI / measurement configurations and / or downlink control information (DCI) signaling for activation / triggering of the selected CSI / measurement configurations. The activation / triggering signaling can include a limited number of bits to indicate the codepoints.