Abstract: According to some embodiments, a method performed by a wireless device for cell selection or reselection in a non-terrestrial network (NTN) comprises determining whether to perform one or more cell selection or reselection measurements based on a cell selection or reselection criteria. The cell selection or reselection criteria is based on a signal quality of a serving cell and a relationship between the wireless device and a satellite or spot beam of the NTN. Upon determining that the cell selection or reselection criteria for performing measurements is satisfied, performing the one or more cell selection or reselection measurements.

Abstract: A method for performing radio link monitoring comprises performing, by a user equipment (UE), a radio link monitoring (RLM) procedure with first RLM parameters; receiving, at the UE, a message including at least one second RLM parameter; identifying, by the UE, a difference between the first RLM parameters and the at least one second RLM parameter; and resetting, at the UE, at least one of the first RLM parameters in response to identifying the difference between the first RLM parameters and the at least one second RLM parameter. The method may configure the UE upon performing RLM by adapting the difference between the current RLM parameters and the future parameters, so that the UE behavior may become clear.

Abstract: Systems and methods are disclosed herein for enabling a User Equipment (UE) to perform cell quality derivation in a wireless communication network utilizing parameters from an appropriate measurement object. In some embodiments, a method of operation of a UE to perform cell quality derivation in a wireless communication network includes the UE receiving, via Radio Resource Control (RRC) signaling, a measurement configuration that includes a list of measurement objects. The UE receives a serving cell configuration including frequency information that specifies an absolute frequency of a Synchronization Signal block (SSB) corresponding to a serving cell. The UE selects a measurement object in the list of measurement objects that specifies an SSB frequency having a same value as the specified absolute frequency.

Abstract: A method by a wireless device includes receiving, from a network node, data associated with the airborne or spaceborne system. The data includes satellite ephemeris data and a validity duration for the ephemeris data.

Abstract: A method including receiving handover information associated with an execution of a handover and performing at least one operation of the handover based on the handover information. The handover information includes at least one of: a time offset; information for generating a time offset; an absolute time for executing the handover or for accessing the target cell; a condition to be fulfilled before execution of the handover; information associated with ephemeris data of a satellite serving the target cell; information associated with an upcoming service link switch or feeder link switch; information associated with a timing advance; a physical random access channel resource; an indication to execute a preconfigured handover command; an identifier associated with a preconfigured handover command; an indication for disabling fallback to a source cell; and a parameter for determining a quality of the source cell for fallback to the source cell.

Abstract: A method performed by a wireless device includes receiving ephemeris data from a network node associated with a first cell. The ephemeris data is associated with a satellite serving a second cell, and the ephemeris data is coarse ephemeris data comprising less than full accuracy than full ephemeris data. The wireless device uses the coarse ephemeris data to locate a beam associated with the second cell and synchronizes with the second cell.

Abstract: A method in operating user equipment, UE, according to some embodiments includes receiving a first mobility configuration for lower layer mobility associated to multiple physical cell identities, PCIs, for a cell, of a Secondary Cell Group, SCG, for operating in multi-radio access technology dual connectivity, MR-DC. The lower layer mobility is used to trigger a change of PCI upon reception of a lower layer signaling by the UE. The method further includes operating according to the mobility configuration for the cell of the SCG while operating in MR-DC. Related network node methods are disclosed.

Abstract: A method performed by a communication device is provided. The communication device is configured with a plurality of transmission configurations associated with one or more cells, each cell associated with one or more physical cell identities, PCIs. The method includes receiving a signal for lower layer mobility. The signal including an indication of a transmission configuration to be activated from the plurality of transmission configurations; and, in response to the indicated transmission configuration, determining if a timing advance, TA, is valid or invalid.

Abstract: A method, system and apparatus are disclosed for L1/L2—centric mobility—neighbor cell measurements. In one embodiment, a method implemented in a wireless device, WD, includes receiving a measurement configuration to perform at least one neighbor cell measurement, the measurement configuration indicating a first group of PCIs; performing the at least one neighbor cell measurement based on the measurement configuration, for the first group of PCIs; and triggering an event based on the at least one neighbor cell measurement for the first group of PCIs. In one embodiment, a method implemented in a network node includes transmitting a measurement configuration indicating a first group of PCIs; and receiving a report as a result of an event that is triggered based on the at least one neighbor cell measurement for the first group of PCIs.

Abstract: A method of operating a user equipment, UE, configured with a plurality of transmission configurations for lower layer mobility and associated with one or more cells, each cell associated with one or more physical cell identities, PCIs, in a wireless communication network is provided. The method includes receiving a lower layer signaling that includes an indication of a change of transmission configuration from a first transmission configuration to a second transmission configuration from the plurality of transmission configurations, and in response to receiving the lower layer signaling, performing the change of transmission configuration and performing an action related to a measurement configuration. The action includes one of performing an update to at least one element in the measurement configuration based on the second transmission configuration, and applying a stored measurement configuration associated with the second transmission configuration.

Abstract: A method performed by a network node (160) includes serving a cell area by a first physical network node for a first time duration. The first physical network node uses an identifier of a logical network node. For a second time duration, the cell area is served by a second physical network node. The second physical network node uses the identifier of the logical network node. The first physical network node serves the cell area with a first frequency band and the second physical network node serves the cell area with a second frequency band.

Abstract: There is provided a method in a wireless device. The method comprises: receiving a Media Access Control (MAC) Control Element (CE) from a network node, the MAC CE comprising a plurality of octets and a plurality of fields, wherein a first field of the plurality of fields is used to indicate a number of sets of power control parameters in a last octet of the received MAC CE, the sets of power control parameters being associated with a reference signal used for path loss estimation; and sending a transmission to a network node, based at least on a set of power control parameters associated with the reference signal.

Abstract: A method of operating a user equipment, UE, configured with a plurality of transmission configurations associated with one or more cells, each cell associated with a frequency, includes receiving an indication of a transmission configuration to be activated from the plurality of transmission configurations, the indicated transmission configuration including a first frequency that is different from a second frequency of a current transmission configuration. The method includes operating in accordance with the indicated transmission configuration at the first frequency.

Abstract: Configuration of measurement requirements on cells and beams in NR is made more efficient by, in a user equipment, UE, receiving, information from a network node, which information indicates: a first number K of beams to be measured by the UE, and a second number L of cells in which the UE is required to measure the first number K of beams. The UE then carries out measurements using the received information; and performs at least one operational task based on a result of the measurements.

Abstract: Systems and methods for Semi-Persistent Sounding Reference Signal (SP SRS) resource activation or deactivation are disclosed. In some embodiments, a method of operation of a wireless device in a cellular communications network comprises receiving, from a network node, a Medium Access Control (MAC) Control Element (CE). The MAC CE comprises an indication of a SP SRS resource set to be activated or deactivated and information that indicates a spatial relation for the SP SRS resource set to be activated or deactivated. In this manner, a MAC CE for SP SRS resource set activation or deactivation is provided in a manner that gives spatial relation information in an efficient and flexible manner.

Abstract: A communication device can be configured with a plurality of physical cell identifiers, PCIs, for a mobility procedure, a plurality of transmission configurations, and one or more cells. Each cell can be operating in a same serving frequency and each cell can be associated with one or more PCIs. The communication device can receive an indication of a transmission configuration to be activated, from the plurality of transmission configurations, that is associated with a non-serving cell or a non-serving PCI, from a network node. The communication device can determine to perform a media access control, MAC, reset operation based on the transmission configuration to be activated.

Abstract: A method (200) performed by a UE (102). The method includes receiving (s202) one or more messages for activating at least i) a first set of configured TCI states and ii) a second set of configured TCI states, wherein the first set of activated TCI states is associated with a first PCI and indicates a first set of reference signals, and the second set of activated TCI states is associated with a second PCI and indicates a second set of reference signals. The method also includes performing (s204) beam failure detection, BFD, monitoring. Performing the BFD monitoring comprises: determining (s206) whether a beam failure with respect to the first PCI has occurred based on the first set of reference signals; and determining (s208) whether a beam failure with respect to the second PCI has occurred based on the second set of reference signals.

Abstract: According to some embodiments, a method performed by a wireless device comprises: receiving a broadcast of full ephemeris data for a serving cell satellite, the broadcast of full ephemeris data occurring at a first periodicity; determining a position of the serving cell satellite based on the full ephemeris data; receiving a broadcast of delta ephemeris data for the serving cell satellite, the broadcast of delta ephemeris data occurring at a second periodicity more frequent than the first periodicity; and determining a position of the serving cell satellite based on the full ephemeris data and the delta ephemeris data.

Abstract: The invention refers to a method performed by a wireless device (10), for connecting to a second satellite (20b) in a non-terrestrial network, NTN, wherein the wireless device employs a first beamforming matrix for directing a radio beam from an antenna array of the wireless device to the a first satellite (20a), the method comprising determining an angular difference between the directions towards the first and the second satellite, determining a second beamforming matrix, for communication with the second satellite, based on a direction of the beam towards the first satellite and the determined difference in angles, and using the second beamforming matrix to configure a receiver and/or transmitter for connecting to the second satellite; the invention further refers to corresponding method performed by a network node comprising transmitting to the wireless device ephemeris data of the first and the second satellite order to allow the wireless device determining an angular difference between the directions to

Abstract: Method and apparatus are disclosed herein for providing Downlink Control Information (DCI)-based Transmission Configuration Indicator (TCI) state update with flexible channel selection. In one embodiment, a method performed by a network node of a cellular communication system comprises transmitting, to a User Equipment (UE), a DCI having a DCI format comprising a TCI state update indication, and a TCI state update application indication indicating one or more channels or signals to which the TCI state update is to be applied by the UE. In another embodiment, a method performed by a UE comprises receiving a DCI having a DCI format comprising a TCI state update indication and a TCI state update application indication indicating one or more channels or signals to which the TCI state update is to be applied by the UE, and applying the TCI state update as indicated by the TCI state update application indication.