Abstract: An apparatus comprising means for: receiving secondary radio link failure information, wherein the secondary radio link failure information is indicative of circumstances of a failure in a secondary radio link between a user equipment and at least one source secondary node while the user equipment was configured to conditionally access a target secondary node, and the user equipment is having dual connectivity with a source master node and a source secondary node; determining based, at least in part, on the received secondary radio link failure information at least one target primary cell of a secondary cell group, of the target secondary node, wherein the determined at least one target primary cell of a secondary cell group is to be included in information indicating at least one suggested target primary cell of a secondary cell group to be prepared by the target secondary node for conditional access by a user equipment; and transmitting information indicative of the determined at least one target primary ce

Abstract: An apparatus comprising means for: receiving secondary radio link failure information, wherein the secondary radio link failure information is indicative of circumstances of a failure in a secondary node while the user equipment was configured to conditionally access at least one target secondary node, and the user equipment is having dual connectivity with a source master node and a source secondary node; determining a plurality of suggested target primary cells of a secondary cell group to be prepared by the at least one target secondary node for conditional access by a user equipment; determining, based at least in part on the received secondary radio link failure information, assistance information, wherein the assistance information assists the at least one target secondary node in determining which at least one of the plurality of suggested target primary cells of a secondary cell group is to be prepared by the at least one target secondary node for conditional access by a user equipment; and transmitti

Abstract: There is provided a method. computer program and apparatus for causing an apparatus of a second access node to perform: causing a first timing advance value to be provided to a user equipment for enabling the user equipment to synchronize uplink transmissions to a timing of a target cell supported by the second access node: determining a validity time of the first timing advance value, wherein, the first timing advance value is considered invalid after the validity time: and signaling. to a first access node supporting a serving cell connected to the user equipment. said validity time.

Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media of the initiation for an RRC connected state. The method comprises receiving, from a second device, information related to a threshold value associated with a configuration of an application layer measurement performed by the first device: performing, during an RRC idle or inactive state, the application layer measurement based on the configuration; and in accordance with a determination that a measured value satisfies the threshold value, initiating a process for entering an RRC connected state. In this way, the UE may report the measurement by switching to the RRC connected state and meanwhile the transmission may be adjusted/optimized by the gNB without guiding the UE to the RRC connected state.

Abstract: Example embodiments of the present disclosure relate to QoE measurement collection in non-connected State. In an example method, a terminal device receives, from an access network device, a quality of experience (QoE) measurement collection (QMC) procedure configuration indicating whether a QMC procedure is to be continued when the terminal device enters into a non-connected state. Then, the terminal device logs, in a logging buffer, QMC logging data of the QMC procedure performed at the terminal device in the non-connected state based on determining that the QMC procedure configuration indicates that the QMC procedure is to be continued when the terminal device enters into the non-connected state. In this way, QMC data collected in a non-connected state can be stored in the logging buffer so that the needed QMC data collected during non-connected state can be maintained.

Abstract: An apparatus configured to receive configuration information related to reporting an early timing advance, TA, acquisition, receive at least one instruction to acquire at least one TA value of at least one candidate cell, generate an early timing advance acquisition report based on the at least one TA value and on the configuration information; and transmit an indication indicative of availability of the early TA acquisition report

Abstract: Example embodiments of the present disclosure relate to QoE measurement collection in non-connected State. In an example method, a terminal device receives, from an access network device, a quality of experience (QoE) measurement collection (QMC) procedure configuration indicating whether a QMC procedure is to be continued when the terminal device enters into a non-connected state. Then, the terminal device logs, in a logging buffer, QMC logging data of the QMC procedure performed at the terminal device in the non-connected state based on determining that the QMC procedure configuration indicates that the QMC procedure is to be continued when the terminal device enters into the non-connected state. In this way, QMC data collected in a non-connected state can be stored in the logging buffer so that the needed QMC data collected during non-connected state can be maintained.

Abstract: A method detecting at least one of a mobility failure and a respective successful handover; determining a type of the mobility failure, wherein the type of the mobility failure is determined in response to the detected mobility failure; generating mobility failure information indicative of one or more parameters associated with the type of mobility failure, wherein the mobility failure information is generated, at least in part, based on the determined type of the mobility failure; and providing the mobility failure information and/or successful handover information including, at least in part, one or more parameters associated with the respective successful handover, wherein mobility failure information and/or successful handover information enable a network to determine whether a root cause associated with at least one of a respective mobility failure information and a respective successful handover information is a misconfiguration of one or more parameters controlling L3 handover procedures or L1/2 inter-

Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media of a proactive switch of vehicle-to-everything communication from a device-to-device connection to a connection routed by one or more network devices. In example embodiments, a first terminal device receives, from a second terminal device via a device-to-device connection, an indication of a decision to switch the device-to-device connection to a connection routed by at least one network device for communication with the second terminal device. Based on the received indication from the second terminal device, the first terminal device then determines proactive switching from the device-to-device connection to the routed connection to be performed. The first terminal device then sends a request to a first network device of the at least one network device to set up the routed connection, the request indicating a cause for the determined proactive switching.

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 network device to determine a first information characterizing at least one of a) a number of cells prepared for a conditional handover or a conditional primary secondary cell change of a terminal device, b) a number of preparation activities associated with the conditional handover or the conditional primary secondary cell change of the terminal device.

Abstract: A UE may determine that at least one execution condition for performing handover from a source cell to a target cell is met and the target cell does not support at least one of a network slice or a service the UE requires; based on the determination, store information related to a radio environment associated with the UE; perform handover to the target cell; and transmit the stored information to the target cell after the handover. A target network node may receive the transmitted information; and provide the information to a source network node. The source network node may receive the information; and perform a root cause analysis for the handover execution of the user equipment based, at least partially, on the received information.

Abstract: There is provided a method, computer program, and apparatus for causing an apparatus for a first access node to perform: establishing a connection towards a user equipment via a serving cell supported by the first access node; instructing the user equipment to obtain a first timing advance value for a target cell supported by a second access node, wherein the first timing advance value indicates a timing for transmitting uplink transmissions to the target cell; receiving, from the user equipment, an indication that the first timing advance value is or will soon be invalid; and determining whether to instruct the user equipment to obtain a second timing advance value for the target cell in dependence on the received indication, the second timing advance value being obtained later in time than the first timing advance value.

Abstract: There is provided a method, computer program, and for an apparatus for causing an apparatus for a user equipment to perform: receiving, a first timing advance value for a target cell supported by a second access node, wherein the first timing advance value indicates a timing for transmitting uplink transmissions to the target cell; receiving, an indication of when the first timing advance value will be invalid; using the indication of when the first timing advance value will be invalid to determine that the first timing advance value is or will soon be invalid; and determining whether to autonomously initiate obtaining a second timing advance value for the target cell in dependence on the determination of whether the first timing advance value is or will soon be invalid, the second timing advance value being obtained later in time than the first timing advance value.

Abstract: There is provided a method, computer program, and apparatus for causing an apparatus for a first access node to perform: establishing a connection towards a user equipment via a serving cell supported by the first access node; instructing the user equipment to obtain a first timing advance value for a target cell supported by a second access node, wherein the first timing advance value indicates a timing for transmitting uplink transmissions to the target cell; receiving, from the second access node, an indication that the first timing advance value is or will soon be invalid; and determining whether to instruct the user equipment to obtain a second timing advance value for the target cell in dependence on the received indication, the second timing advance value being obtained later in time than the first timing advance value.

Abstract: This specification describes a terminal device comprising: means for establishing a radio communications link between the terminal device and a serving cell of a telecommunications network; means for executing a transfer of the radio communications link from the serving cell to a target cell of the telecommunications network; means for detecting that a timer, expiry of which causes declaration of a radio link failure with the serving cell, has reached a threshold value but has been stopped prior to expiry and prior to execution of the transfer; and means for, after successful execution of the transfer, controlling the transmission or the content of a transfer report based on the detecting.

Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media of enabling a successful Mobility Robustness Optimization analysis for primary secondary cell (PSCell) changes. The method comprises transmitting, from a terminal device to a master node of the terminal device, information related to a node initiating a successful PSCell change for the terminal device, wherein the information is indicative of at least one of the following: whether the node initiating the successful PSCell change is either a master node or a secondary node for the apparatus; a cell identifier of the node initiating the successful PSCell change.

Abstract: There is provided a method, apparatus and computer program for causing an apparatus for a first network node to perform: for a first network node, the method comprising: preparing a first set of conditions for a user equipment to autonomously execute during a Conditional PSCell addition, CPA, and/or a Conditional PSCell change, CPC, wherein the first set of conditions comprises at least one first execution condition associated with a quality of a radio network environment to be experienced by the user equipment, and at least one second execution condition associated with a momentary traffic that the user equipment has to transmit and/or receive; and signalling the first set of conditions to the user equipment.

Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable medium of a configuration of successful primary secondary cell (PSCell) change report. The method comprises obtaining information associated with a SPCR; and determining a configuration of the SPCR based at least partly on the information.

Abstract: Systems, methods, apparatuses, and computer program products for mobility failure evidence-related operations. A UE may measure, record, and report a channel access waiting (CAW) time period that elapsed from having a handover-related message in a transmission buffer until a channel for transmission of the handover-related message was obtained or until an acknowledgement or negative acknowledgement from a receiver of the handover-related message was received. The CAW time period information may be provided to a network node, and the network node may control mobility robustness optimization based on the received information.

Abstract: Systems, methods, apparatuses, and computer program products for mobility failure evidence-related operations. A UE may measure, record, and report a channel access waiting (CAW) time period that elapsed from having a handover-related message in a transmission buffer until a channel for transmission of the handover-related message was obtained or until an acknowledgement or negative acknowledgement from a receiver of the handover-related message was received. The CAW time period information may be provided to a network node, and the network node may control mobility robustness optimization based on the received information.