Abstract: It is provided a method comprising: checking if an indication indicates that a target cell is configured to store concurrently first and second configurations of a terminal, wherein the first configuration is based on a first conditional handover request, and the second configuration data set is based on a second conditional handover request; monitoring if the source cell intends performing a radio reconfiguration of the terminal after the source cell configured the terminal for the first conditional handover; canceling the first conditional handover if the source cell intends performing the radio reconfiguration and the indication does not indicate the concurrently storing; instructing the source cell to request the second conditional handover from the target cell if the source cell intends performing the radio reconfiguration and the indication indicates the concurrently storing.

Abstract: According to an example embodiment, a method may include receiving, by a user equipment from a serving base station associated with a source cell, a reconfiguration message that includes a target cell configuration for a target cell, a configuration of a conditional handover execution condition, and information that indicates that the user equipment should immediately decode and apply the target cell configuration upon receiving the reconfiguration message; and immediately decoding and applying, by the user equipment, the target cell configuration upon receiving the reconfiguration message, without waiting for the conditional handover execution condition to be fulfilled.

Abstract: There is provided an apparatus, said apparatus comprising means for receiving a handover command from a first cell, the handover command comprising an uplink resource grant and a condition to be met before handover is performed to a second cell, wherein the uplink resource grant indicates a set of uplink resources for uplink data transmission in the second cell without random access, determining validity of the uplink resource grant based on one or more further configuration parameter and in response to the condition being met, performing the handover according to the validity of the uplink resource grant.

Abstract: Systems, methods, apparatuses, and computer program products for conditional handover (CHO) execution with network slice service continuity prioritization are provided. A radio resource control (RRC) reconfiguration message sent by a source radio access network (RAN) node to the user equipment (UE) may include, for each CHO configuration, an associated network slice-related priority index. The UE may take this index into account when selecting a suitable cell during CHO recovery. Additionally, or alternatively, the RRC reconfiguration message sent by a source RAN node may include, for each CHO configuration, an associated network slice support information of the candidate target cell. The message may also include network slice remapping information for any network slice associated with one of the candidate target cells. Using the above network slice-related information received from the network, the UE can prioritize the cell to select during CHO recovery in case more than one suitable cell is available.

Abstract: Improved techniques of beam management in a HO situation include receiving, at a source node from a candidate target node after receiving a measurement report from a UE prior to completion of a HO, a repetition configuration of a channel state information reference signal (CSI-RS) resource index to be used by the UE for random access. When beam refinement occurs during HO, a candidate target cell for HO provides the UE with a repetition configuration of CSI-RS resource index that will be selected and used by the UE for random access to the target cell. When beam refinement occurs before HO, the candidate target cell of handover provides the UE (e.g. during the handover preparation phase in case of conditional HO (CHO)) with the repetition configuration of CSI-RS resource index (or indices) whose transmission(s) is repeated while the UE is served by the source cell and before executing a handover.

Abstract: A method and apparatus may include receiving, by a master node involved in multi-connectivity, at least one indication from a user equipment upon or after at least one condition for conditional cell change is fulfilled that it has detached from at least one source PSCell of a secondary node. The method may further include transmitting, by the master node, at least one SgNB Release Request to the source Secondary Node such that the secondary node stops transmission and reception on the source PSCell and/or initiates data forwarding to the target SN or to the MN. The method may further include receiving, by the master node, at least one SgNB Release Request Acknowledge from the source Secondary Node. The method may further include forwarding, by the master node, user data to the target secondary node upon receiving an indication from the user equipment.

Abstract: An example embodiment relates to Random Access Channel, RACH, procedure, for example in the New Radio, NR. Random access procedures may be of two types, contention based CBRA and contention free, CFRA. A client device may only perform CBRA fallback when none of the reference signal received strengths, RSRPs, of the synchronization signal blocks, SSBs, which is associated with the CFRA resources is above a predefined threshold, T1. All SSBs and CSI-RS with associated CFRA resources may be below the threshold. Then, the client device may select an SSB or CSI-RS according to a predefined rule and perform CFRA when CFRA resources are associated. Devices, methods and computer programs are disclosed accordingly.

Abstract: A method for use by a communication device, wherein the method includes the steps of: receiving a handover command from one of a plurality of network cells which provides a communication service for the communication device, creating measurement data upon receiving the handover command, logging the measurement data and the end of the measurement after an execution condition to perform handover to another one of the plurality of network cells is fulfilled, and transmitting the logged measurement data to the other one of the plurality of network cells.

Abstract: Systems, methods, apparatuses, and computer program products for conditional proactive discontinuous reception (DRX) measurement are provided. For example, a user equipment (UE) may be in a DRX active state (e.g., where the DRX is used) and configured to proactively measure for radio problems. Another example may relate to a network-controlled implementation where the serving network node (e.g., a base station (BS)) may signal the UE a condition and a configuration for the proactive DRX measurement. Another example may relate to a UE-controlled implementation for improving service unavailability using DRX operation. For example, the serving BS may signal, to the UE, proactive DRX measurement assistance information.

Abstract: It is provided a method comprising monitoring if a source cell intends performing a radio reconfiguration of a terminal configured with a conditional handover from the source cell to a target cell; determining a determined category among plural predetermined categories; wherein the radio reconfiguration is associated to the determined category; for each category a respective predetermined sequence of one or more operations is defined; the respective predetermined of one of the categories is different from the respective predetermined sequence of another one of the categories; and the method further comprises inhibiting the performing of the radio reconfiguration of the terminal unless the predetermined sequence of one or more operations of the determined category is performed along with the performing of the radio reconfiguration if the source cell intends performing the radio reconfiguration of the terminal.

Abstract: An apparatus for use by a first communication network control element configured to control a communication connection of at least one communication element in a first network area providing a specific communication capability, the apparatus including processing circuitry, and memory for storing instructions to be executed by the processing circuitry, wherein the memory and the instructions are configured to, with the processing circuitry, cause the apparatus at least: to determine that a communication element communicating in the first network area and using the specific communication capability enters a second network area which does not provide the specific communication capability and that there is a switching of the communication connection to the second network area, and to cause sending of connection switching information related to the switching of the communication connection of the communication element to a second communication network control element.

Abstract: There are provided measures for feedback on network-assisted fallback to contention-based random access.

Abstract: An apparatus including at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: prior to a radio link failure between a serving cell and a terminal, proactively provide an indication indicating at least one resource to perform at least one random access procedure with a neighbouring cell to a terminal.

Abstract: There are provided measures for network-assisted fallback to contention-based random access.

Abstract: Aspects of the invention pertain to a method, comprising receiving a preparatory handover request pertaining to at least one or more physical resources, respectively associated to a particular communication service, preliminarily deciding on the feasibility of such preparatory handover request for each of said at least one or more physical resources associated to the particular communication service dependent on at least one feasibility criterion, and validating the preliminary decision on the feasibility of the preparatory handover request dependent on at least one validation criterion. Likewise, corresponding apparatus and computer program products are addressed, both from network entity perspective such as a gNB, as well as from a terminal's perspective, e.g. from a UE perspective.

Abstract: A user equipment (UE) includes at least one processor and at least one memory including computer program code. The at least one memory and the computer program code are configured to, with the at least one processor, cause the UE to obtain a conditional handover command, the conditional handover command indicating a multiple cell target for handover from a source cell and at least one performance margin, each of the at least one performance margin associated with a cell neighboring a first cell in the multiple cell target, determine whether to initiate a handover to the first cell based on the at least one performance margin, and transmit data to the first cell based on the determination of whether to initiate the handover.

Abstract: A method for use by a communication device, the method including the steps of receiving a handover, HO, command from a serving network cell of a plurality of network cells which provides a communication service for the communication device, acquiring current handover related information, logging the current handover related information only if a predetermined condition is fulfilled, wherein the predetermined condition is a condition that the current handover related information is different from previous handover related information, wherein the previous handover related information was acquired and reported by the communication device before receiving the HO command.

Abstract: According to an example aspect of the present invention, there is provided an apparatus (110) comprising at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the apparatus at least to receive, from a first cell (120), an indication of a measurement configuration valid for at least one neighbour cell (130) of the first cell (120), and perform at least one measurement in accordance with the measurement configuration responsive to a radio link failure of a radio link (112) over which the apparatus is communicating.

Abstract: A method, apparatus, and computer-readable storage medium are provided for selecting a target cell based on channel impulse response (CIR) measurements, which may include receiving measurement configuration information including a CIR parameter from a first network node and may further include generating one or more measurement reports based on the CIR parameter, the one or more measurement reports including CIR measurements of one or more beams of one or more neighbor cells associated with the first network node and/or second network nodes and transmitting the one or more measurement reports to the first network node. The selecting a target cell based on CIR measurements may include transmitting measurement configuration information including a CIR parameter and receiving one or more measurement reports, including CIR measurements of one or more beams of one or more network nodes and selecting a target cell for handover using the measurements.

Abstract: An apparatus, method and computer program product for: interfacing with at least a first radio access network function and a second radio access network function, sending a first message to the first radio access network function and a second message to the second radio access network function, the first message and the second message comprising a request to report information based on at least one criterion, receiving the reported information from the first radio access network function and the second radio access network function, and grouping the reported information and providing the grouped information to at least one radio access network optimization algorithm.