Abstract: Systems, methods, and instrumentalities are described herein for adapting mobility under discontinuous coverage (e.g., associated with gap(s) in coverage). In examples, a WTRU may determine the start and duration of discontinuous coverage. Discontinuous coverage may be explicitly indicated in SI (e.g., start UTC 10:00+90 s). The determination of the start and duration of discontinuous coverage may be implicitly determined via assistance information broadcasted in a SI cell stop time and a neighboring cell start time. The start and duration of discontinuous coverage may be calculated via location information (e.g., the distance between the WTRU and serving/neighboring cell center and the diameter of cell coverage). The WTRU may report it is about to enter a coverage gap at some configured offset from time (e.g., via a timer) of the coverage gap.

Abstract: Procedures, methods, architectures, apparatuses, systems, devices, and computer program products directed to control throughput performance. In an embodiment, a method, implemented in a WTRU, for controlling throughput, comprises: determining a first mode of transmission of a first packet of data: transmitting, to a network (NW) element, the packet data based on the first mode of transmission; determining a second mode of transmission of a second packet of data based on the type of the second packet of data, wherein the second mode of transmission differs from the first mode of transmission.

Abstract: Methods, systems, and apparatuses for use in wireless communication are disclosed. A method performed by a wireless transmit/receive (WTRU) unit may compromise: receiving information indicating a first tracking area code (TAC) and first TAC validity time information; registering with a network using the first TAC; receiving information indicating a second TAC and second TAC validity time information; determining, based on the first TAC validity time information and the second TAC validity time information, a time period wherein both the first TAC and second TAC are valid; selecting a time within the time period; and transmitting, at the selected time, a connection request.

Abstract: Methods, apparatuses, and systems for determining and communicating positioning information in a wireless communication network are provided. For example, a method implemented by a wireless transmit/receive unit (WTRU) includes receiving information indicating a set of position reference signal (PRS) configurations and cluster information. Each PRS configuration is associated with a respective cluster and respective cluster information. The method also includes determining a first location of the WTRU using a first PRS configuration, selecting a cluster that encompasses the first location and is associated with a second PRS configuration, determining a second location of the WTRU based on the second PRS configuration, and transmitting second information indicating the second location of the WTRU and respective cluster information of the selected cluster.

Abstract: A WTRU is configured to receive information to transmit uplink data indicating a first number of nominal repetitions and a first number of symbols for transmission in each of the first number of nominal repetitions. The WTRU is configured to determine a set of symbols associated with a first nominal repetition of the first number of nominal repetitions and is configured to transmit, based on the set of symbols associated with the first nominal repetition, a second number of actual repetitions in symbols associated with the first nominal repetition. The second number of actual repetitions and the symbols used to transmit the second number of actual repetitions are based on an occurrence of an event during the set of symbols associated with the first nominal repetition. The second number of actual repetitions is determined based on whether the event is a COT and the COT is initiated by the WTRU.

Abstract: A wireless transmit/receive unit (WTRU) may comprise a processor. The processor may be configured to receive (e.g., via broadcast) configuration information indicating a time that a same-PCI satellite switch may occur. In one or more examples, the WTRU may transmit assistance information prior to the same-PCI satellite switch. The assistance information may, for example, include a re-synchronization duration, capabilities to synchronization procedures, and/or a time indication for resuming TX and/or RX. The WTRU may receive configuration information for satellite re-synchronization. The WTRU may perform the same-PCI satellite switch to the second satellite, for example, based on the configuration information indicating the time for the same-PCI satellite switch. In performing the same-PCI satellite switch, the WTRU may start a resynchronization gap, suspend UL TX and/or DL RX, and/or perform re-synchronization procedure(s).

Abstract: A wireless transmit/receive unit (WTRU) may determine a first set of beams and a second set of beams, that a respective quality of each beam in the first set of beams is less than a predetermined quality value, and that a beam that is in the second set of beams and not in the first set of beams has a quality that is equal to or greater than the predetermined quality value. The WTRU may select the beam that is in the second set of beams and not in the first set of beams and whose quality is equal to or greater than the predetermined quality value, for a BFR and send a message that indicates the selected beam for the BFR to a base station (e.g., a gNodeB). The WTRU may receive a message comprising the selected beam from the gNodeB.

Abstract: A wireless transmit/receive unit, WTRU, receives a plurality of positioning reference signals from a plurality of terrestrial transmission points, the positioning reference signals including at least one positioning reference signal from a first terrestrial transmission point and at least one positioning signal from a second terrestrial transmission point, on condition that at least one value based on first measurements of the plurality of positioning reference signals satisfies a condition, transmits a request to initiate, at the WTRU, positioning using positioning reference signals received from satellites, received, in response to the request, information about a set of satellites, selects at least one satellite from the set of satellites, determines a second position estimate for the WTRU based on at least one positioning reference signal received from at least one selected satellite, and sends to a network node a message comprising information indicating the second position estimate for the WTRU.

Abstract: A wireless transmit/receive unit (WTRU) may comprise a processor. The processor may be configured to receive (e.g., via broadcast) configuration information indicating a time that a same-PCI satellite switch may occur. In one or more examples, the WTRU may transmit assistance information prior to the same-PCI satellite switch. The assistance information may, for example, include a re-synchronization duration, capabilities to synchronization procedures, and/or a time indication for resuming TX and/or RX. The WTRU may receive configuration information for satellite re-synchronization. The WTRU may perform the same-PCI satellite switch to the second satellite, for example, based on the configuration information indicating the time for the same-PCI satellite switch. In performing the same-PCI satellite switch, the WTRU may start a resynchronization gap, suspend UL TX and/or DL RX, and/or perform re-synchronization procedure(s).

Abstract: A WTRU may receive downlink control information (DCI) from a first transmission/reception (TRP). The DCI may indicate that the WTRU is to transmit a physical random access channel (PRACH) transmission. The DCI may include an indication of a preamble, an indication of a first PRACH mask, and/or an indication associated with a first synchronization signal block (SSB), and/or an indication of a reference signal (RS). The WTRU may be configured to transmit the preamble, to a second TRP, the preamble in a first PRACH resource. The first TRP and/or the second TRP may be associated with a same physical cell identity (PCI). The WTRU may receive, from the second TRP, a first response to the preamble. The first response may include a first timing advance (TA) command for the second timing alignment for transmission to the second TRP and/or an index indicating the second TRP.

Abstract: A wireless transmit/receive unit (WTRU) may determine a first set of beams and a second set of beams, that a respective quality of each beam in the first set of beams is less than a predetermined quality value, and that a beam that is in the second set of beams and not in the first set of beams has a quality that is equal to or greater than the predetermined quality value. The WTRU may select the beam that is in the second set of beams and not in the first set of beams and whose quality is equal to or greater than the predetermined quality value, for a BFR and send a message that indicates the selected beam for the BFR to abase station (e.g., a gNodeB). The WTRU may receive a message comprising the selected beam from the gNodeB.

Abstract: Systems, methods, devices, and instrumentalities are described herein relate to partial or delta updated flight path reporting. A wireless transmit/receive unit (WTRU) may transmit a first message indicating flight path information is available. The WTRU may receive a second message including a flight path reporting configuration. The flight path reporting configuration may request the flight path information. The WTRU may transmit an initial flight path message within a third message. Based on information associated with changing from a previous flight path to an updated flight path, the WTRU may detect that a previous flight path is required to be updated with an updated flight path. The WTRU may transmit an indication that the updated flight path is available. The WTRU may receive a request for and subsequently transmit partial or delta updated flight path information.

Abstract: A WTRU may receive downlink control information (DCI) from a first transmission/reception (TRP). The DCI may indicate that the WTRU is to transmit a physical random access channel (PRACH) transmission. The DCI may include an indication of a preamble, an indication of a first PRACH mask, and/or an indication associated with a first synchronization signal block (SSB), and/or an indication of a reference signal (RS). The WTRU may be configured to transmit the preamble, to a second TRP, the preamble in a first PRACH resource. The first TRP and/or the second TRP may be associated with a same physical cell identity (PCI). The WTRU may receive, from the second TRP, a first response to the preamble. The first response may include a first timing advance (TA) command for the second timing alignment for transmission to the second TRP and/or an index indicating the second TRP.

Abstract: Systems, methods, and instrumentalities are disclosed herein associated with receiving a triggering configuration for starting and/or stopping a dual connection with a cell (e.g., second cell), where the triggering configuration may be the same or different for the uplink (UL) and downlink (DL). A configuration may be received regarding the WTRU UL behavior for faster activation of the target cell (e.g. faster channel quality indicator (CQI) reporting prior to starting the connection towards the second cell), which may include triggering conditions for starting the UL signaling. The triggering conditions may be monitored for starting the UL signaling towards/regarding the second cell for faster activation. In examples the triggering conditions may be monitored for starting the connection towards the second cell.

Abstract: A wireless transmit/receive unit (WTRU) may receive configuration information that indicates associated random access channel occasions (ROs). for example, a first RO and a second RO. The WTRU may determine a feature combination associated with the WTRU. The WTRU may determine a set of preambles based on the feature combination associated with the WTRU. The set of preambles may include multiple subsets of preambles, for example, a first subset of preambles associated with the first RO of the associated ROs and a second subset of preambles associated with the second RO of the associated ROs. The WTRU may transmit a first preamble of the first subset of preambles on the first RO of the plurality of associated ROs and a second preamble of the second subset of preambles on the second RO of the plurality of associated ROs.

Abstract: Methods for resource efficient data transmission are described herein. A method may comprise operating in one of an idle or an inactive mode and transmitting, in response to a random access (RA) message or a configured grant (CG), a small data transmission over an uplink channel. The RA message may be received in a two-step RA procedure or a four-step RA procedure. The method may further comprise transitioning from the idle or the inactive mode to a connected mode. The method may further comprise determining resources for transmitting the small data transmission. The method may comprise determining whether the small data transmission was successfully received and retransmitting, on a condition the small data transmission was not received, the small data transmission. The method may further comprise segmenting a small data packet into a plurality of small data packets and transmitting the small data packets in a plurality of transmission opportunities.

Abstract: A method and WTRU for resource re-allocation is disclosed. A WTRU may be configured to receive a radio network temporary identifier (RNTI) and receive fallback configuration information. The WTRU may be configured to receive an indication. The indication may indicate that a particular resource or set of resources are no longer available. The indication may comprise applicability criteria and applicability resource information. The WTRU may be configured to apply the fallback configuration in resources based on the applicability resource information on a condition that a characteristic of the WTRU matches at least one applicability criteria. The WTRU may be configured to transmit uplink data based on the fallback configuration. The fallback configuration may comprise at least one of: a measurement configuration, a configured grant configuration, a random access channel (RACH) configuration, or a physical downlink control channel (PDCCH) monitoring periodicity configuration.

Abstract: Systems, methods, devices, and instrumentalities are described herein related to conditional triggers for flight path update indications. A wireless transmit/receive unit (WTRU) may receive configuration information. The configuration information may indicate a trigger condition (e.g., threshold) associated with enabling transmission of a flight path update indication. The WTRU may determine that the threshold associated with enabling transmission of the flight path update indication is satisfied. Based on the threshold being satisfied, the flight path update indication may be transmitted. The WTRU may receive a request to transmit the updated flight path information and transmit the updated flight path information.

Abstract: Systems, methods, and instrumentalities are described herein for performing propagation delay compensation. For example, a Wireless Transmit/Receive Unit (WTRU) may be configured with the resources and signals to perform a Propagation Delay (RD) procedure, or a Propagation Delay Information Exchange (PDIE), or a Propagation Delay Compensation (PDC). The WTRU may receive configuration that may identify a reference signal (RS) pair for a path. The WTRU may determine that a trigger condition is satisfied for a path. The trigger condition being satisfied may trigger the WTRU to perform a PDIE. The WTRU may determine a propagation delay (RD) for a path. If the determined RD meets a threshold for the path, the WTRU may apply a PDC to an uplink (UL) transmission that uses the path.

Abstract: Systems, methods, devices, and instrumentalities are described herein relate to explicit requests for flight path statuses. A wireless transmit/receive unit (WTRU) may transmit a first message indicating flight path information is available. The WTRU may receive a second message including a flight path reporting configuration. The flight path reporting configuration may request the flight path information. The flight path reporting configuration may include at least one of: a number of waypoints; whether to include timestamp information; or a configuration to periodically report flight path information updates. The WTRU may transmit an initial flight path message within a third message. At a configured periodicity, the WTRU may evaluate whether the flight path information has changed since a previous flight path report was transmitted.