Abstract: An apparatus performs evaluating, with a user equipment of a communication network, before detaching from a source cell a conditional handover execution condition fulfillment for a conditional handover with the user equipment from the source cell to at least one target cell of the communication network; and based on the evaluating, detaching from the source cell for performing the conditional handover to a target cell of the at least one target cell. Further, an apparatus performs sending toward user equipment information comprising a configuration of a conditional handover, wherein the information causes the user equipment to evaluate a conditional handover execution condition fulfillment before detaching from the source cell for at least one target cell based on an indication of the conditional handover execution condition fulfillment to a first target cell of the at least one target cell that does not support a dual active protocol stack configuration.

Abstract: There are provided measures for evaluation and control of predictive machine learning models in mobile networks. Such measures exemplarily comprise receiving information on a predictive model related to a radio resource management function, obtaining behavior information on an intended behavior of said predicted model, obtaining difference determination information on difference determination with respect to a predictive model prediction and said intended behavior, measuring a network condition, determining a prediction result based on said network condition and said information on said predictive model, determining a behavior result based on said network condition and said behavior information, and evaluating validity of said predictive model based on said prediction result, said behavior result, and said difference determination information.

Abstract: Apparatuses and methods in a communication system is disclosed. The method comprises detecting (400) a beam failure event in a serving cell; and responsive to the detection of the beam failure event, transmitting (404) a beam failure recovery message and transmitting (406) a measurement report comprising mobility measurements related to the serving cell and at least one further cell.

Abstract: An apparatus, comprising at least one processor, and at least one memory storing instructions, the at least one memory and the instructions configured to, with the at least one processor, cause a serving secondary node to transmit to a target secondary node a preparation request indicating that an inter-secondary node conditional PSCell change is to be prepared.

Abstract: An apparatus for use by a communication network control element or function configured to control a communication of a communication element or function in a communication network, the apparatus comprising at least one processing circuitry, and at least one memory for storing instructions to be executed by the processing circuitry, wherein the at least one memory and the instructions are configured to, with the at least one processing circuitry, cause the apparatus at least: to conduct a conditional secondary cell addition procedure for establishing, in addition to a first communication link to a primary cell being controlled by the communication network control element or function forming a communication path of the communication element or function, a second communication link to a secondary cell, to send, to the communication element or function, a connection reconfiguration information set regarding the establishment of the second communication link, wherein the connection reconfiguration information set

Abstract: In a system, apparatus, method, and non-transitory computer readable medium for implementing fallback to conditional handover using a SSB reference signal, a UE device may be caused to, receive RRC reconfiguration information from a source RAN node, the RRC reconfiguration information including a SSB RS based CHO execution condition associated with at least one target cell controlled by a target RAN node, and a CSI-RS based CHO execution condition associated with the target cell(s), perform signal measurements of at least one SSB RS and at least one CSI-RS associated with the target cell(s), the at least one CSI-RS associated with a contention-free random access resource, and perform the CHO with the target cell(s) based on the signal measurement results of the at least one SSB RS, the at least one CSI-RS, the SSB based CHO execution condition, and the CSI-RS based CHO execution condition.

Abstract: An apparatus for use by a communication element or function configured to conduct a multi-connectivity communication in a communication network in which at least two communication links are used to at least two different cells formed by at least one network element or function for forming a communication path, the apparatus comprising at least one processing circuitry, and at least one memory for storing instructions to be executed by the processing circuitry, wherein the at least one memory and the instructions are configured to, with the at least one processing circuitry, cause the apparatus at least: to determine that a link failure recovery procedure for a first communication link with a first cell is conducted, to detect that a condition for performing a conditional cell change procedure for a second communication link to a second cell is met, which is to be conducted during the link failure recovery procedure for the first communication link, to execute a processing for controlling a timing for conducti

Abstract: The mobile device includes at least one memory storing computer program code and at least one processor configured to execute the computer program code and cause the mobile device to perform, initiating a time-to-trigger procedure for evaluating a measurement event condition with respect to a serving cell and/or a neighboring cell of a mobile network; storing information related to a beam, which is or was used by the mobile device at the time of initiating the time-to-trigger procedure; and providing the stored beam related information to the mobile network.

Abstract: A method comprising, during multi-connectivity: sending a re-configuration message for execution by a user equipment; and sending a flag indicating an action to be taken by the user equipment during or after execution by the user equipment of an existing reconfiguration message, wherein the flag is configured to distinguish between at least two of the following actions: discarding the reconfiguration message; executing the reconfiguration message after executing an existing reconfiguration message; or prioritizing execution of the reconfiguration message over execution of an existing reconfiguration message.

Abstract: Inter-alia, a method is disclosed comprising: obtaining measurement configuration information indicative of a measurement configuration for a measurement on at least one target secondary cell of a mobile communication network, executing a handover to a target cell, and, before and/or during executing the handover, starting a measurement on at least one target secondary cell based, at least in part, on the measurement configuration information. Further, a method is disclosed comprising: receiving, from a target node, target secondary cell information indicative of at least one target secondary cell, upon reception of the target secondary cell information, transmitting a measurement configuration information indicative of a measurement configuration for a measurement on at least one target secondary cell based, at least in part, on the target secondary cell information. It is further disclosed an according apparatus, a computer program and a system.

Abstract: A method may include receiving a request for conditional handover from a source node. The method may also include sending a conditional handover request acknowledgment message in response to the request. The method may further include sending a conditional handover cancellation message to a source node. The conditional cancellation message may include a genuine cancellation or a modification-related cancellation. Further, the method may include receiving a response message from the source node in response to the conditional handover cancellation message. In addition, the method may include deciding to keep or release user equipment context based on the response message.

Abstract: Radio access network controller-based mobility optimization is disclosed. Mobility reports are received at a radio access network controller from multiple network node devices, each mobility report reporting at least one individual failure event to complement one or more aggregated mobility event counters and/or one or more aggregated performance measurement reports. The mobility reports are related to client devices in one or more service areas. The radio access network controller analyzes the received mobility reports. In response to the analyzing resulting in a perceived need for an update of a cell configuration of a service area of the one or more service areas, the radio access network controller determines updated cell configuration information for the service area. The updated cell configuration information is transmitted from the radio access network controller to-wards at least one network node device in the service area.

Abstract: This document discloses a solution for performing exploration of radio resource management actions. According to an aspect, a method in a terminal device includes: receiving configuration information from a network node of a radio access network; entering, in response to the configuration information and in a state of not having a need to transfer data, an exploration mode where a reduced set of radio connection functions are enabled compared with a default operating mode; triggering, in the exploration mode, an explorative handover from a source cell managed by the network node to a target cell; establishing a radio connection with a target network node as a result of the explorative handover to the target cell managed by the target network node; acquiring measurement data of the radio connection and transmitting the measurement data to the target network node.

Abstract: A UE receives configuration from a source cell for conditional handover for target cell(s). At least one of the target cell(s) also supports DAPS handover. The UE determines that either a RLF or HOF has occurred. The UE selects one of the target cell(s) for a handover, and performs a process for handover to the selected target cell. A UE receives individual handover commands and corresponding configuration for conditional handover for target cell(s) and an indication to use DAPS handover if possible in response to a handover. The UE determined condition(s) for handover to one of the target cell(s) have triggered, wherein the one target cell supports DAPS handover. The UE performs, based on the indication to use DAPS handover if possible in response to a handover, handover by the user equipment to the one target cell without releasing the source cell while accessing the one target cell.

Abstract: According to an example embodiment, a method may include logging, by a user device in a wireless network, information related to a multiple-event conditional handover execution, wherein the multiple-event conditional handover execution is based on a joint evaluation of multiple events by the user device; and sending, by the user device, a report including at least a portion of the information.

Abstract: There is provided an apparatus comprising means for: receiving, from a network node, at least one conditional primary secondary cell change and addition reconfiguration and at least one execution condition associated with at least one candidate primary secondary cell, wherein the reconfiguration comprises at least a new configuration for a master cell group; evaluating the at least one execution condition; determining that an execution condition associated with one of the at least one candidate primary secondary cell is satisfied; selecting the one of the at least one candidate primary secondary cell as a selected candidate cell; transmitting information on the selected candidate cell to the network node using a current master cell group configuration; failing to apply the conditional primary secondary cell change and addition associated with the selected candidate cell and detecting a reconfiguration failure; transmitting a message to trigger a re-establishment procedure, wherein the message comprises an exp

Abstract: A method and apparatus may include receiving, by a user equipment from a source cell, a first configuration configured for conditional handover and dual active protocol stack handover with a reduced target cell configuration, and a second configuration configured for conditional handover only. The method may further include determining, by the user equipment, the availability of at least one radio link associated with the source cell. The method may further include performing, by the user equipment, a conditional handover procedure according to at least one of the received configurations based upon the determination.

Abstract: A method, apparatus, and a computer-readable storage medium are provided for forwarding of buffered user data at a target node to a re-establishment node. In an example implementation, the method may include receiving, by a first network node, a handover cancel or an Xn-User plane address indication message from a second network node, the handover cancel or the Xn-User plane address indication message including tunnel addresses for one or more data radio bearers; and forwarding, by the first network node, buffered downlink packets to a third network node or the second network node, the forwarding based at least on the tunnel addresses. In an additional example implementation, the method may include sending, by a third network node, tunnel addresses for one or more data radio bearers to a second network node upon re-establishing of a radio resource control connection; and receiving, by the third network node, buffered packets at the first network node from a second network node or the first network node.

Abstract: In one aspect of the present disclosure, a user equipment has a processor and a memory including computer program code, where the memory and the computer program code are configured, with the processor, to cause the user equipment to receive from a network node at least one beam-specific mobility parameter associated with at least one respective candidate beam in a serving cell; to switch in the serving cell to a new beam among the at least one candidate beam; and to select a beam-specific mobility parameter associated with the new beam. In another aspect of the present disclosure, a network node has a processor and a memory including computer program code, where the memory and the computer program code are configured, with the processor, to cause the network node to preconfigure at least one beam-specific mobility parameter associated with at least one respective candidate beam in a serving cell; and to send the at least one beam-specific mobility parameter to a user equipment.

Abstract: A method may include detecting, by the user device, a cell identity of a neighbor cell, determining, by the user device, whether either a first measurement by the user device of a signal from the neighbor cell after the detecting or a measurement by the user device of a signal from the neighbor cell within a threshold period of time after the detecting, at least fulfills an entry condition of a measurement reporting event for the neighbor cell, transmitting, by the user device, a measurement report based on the second time-to-trigger value if either the first measurement of a signal from the neighbor cell after the detecting or a measurement of a signal from the neighbor cell within a threshold period of time after the detecting fulfills the entry condition of the measurement reporting event, otherwise, transmitting, by the user device, a measurement report based on the first time-to-trigger value.