Abstract: Embodiments include methods for a user equipment (UE) to report failure of an inter-radio access technology (RAT) mobility procedure from a source cell to a target cell. Such methods include receiving, from a source node serving the source cell, a command to perform an inter-RAT mobility procedure towards the target cell, which uses a different RAT than the source cell. Such methods include detecting a failure associated with the inter-RAT mobility procedure. The failure cause is either the UE was unable to comply with a configuration included in the command or a protocol error associated with inter-RAT information included in the command. Such methods include sending a failure report, including an indication of the failure cause, to a node serving a cell the UE connected to after detecting the failure. Other embodiments include complementary methods for network nodes, as well as UEs and network nodes configured to perform such methods.

Abstract: A method performed by a wireless device for reporting failure information in a self-organizing network, SON, is provided. The method includes receiving, from a source cell (“cell”) while being connected to the cell, a handover command to attempt a handover to a target cell, one or more bearers associated with the handover to the target cell being configured with a dual active protocol stack, DAPS. The method includes experiencing a failure while attempting the handover. The method includes storing first failure information associated with the failure. The method includes performing a DAPS fallback to the cell based at least in part on experiencing the failure. The method includes experiencing a radio link failure, RLF, while being connected to the cell. The method includes storing second failure information associated with experiencing the RLF. The method includes transmitting the first or second failure information towards the SON.

Abstract: Systems and methods are disclosed for enhancements to Mobility Robustness Optimization (MRO) in case of Radio Link Failure (RLF) after successful (conditional) handover. In one embodiment, a method performed by a wireless device comprises receiving a handover (HO) configuration or conditional handover (CHO) configuration from a source cell and declaring a RLF in association with a HO or CHO to a target cell. The method further comprises generating a RLF report responsive to declaring the RLF, the RLF report comprising the HO configuration or CHO configuration, a successful HO report, information about one or more associated time durations, one or more radio link measurements for one or more CHO candidate cells associated to the CHO configuration received from the source cell, or any combination thereof. The method further comprises transmitting the RLF report to a network node.

Abstract: Methods and apparatuses for classifying mobility failure. A method performed by a wireless device comprises detecting a failure event in a MCG, wherein the failure event is at least one of a RLF and a HOF. The method further comprises logging MCG Failure Information associated with the failure event subsequent to detection of the failure event, wherein the MCG Failure Information comprises an elapsed time between time of reception of a last RRC reconfiguration message associated with the MCG and time of MCG connection failure. The RRC reconfiguration message including reconfiguration with sync.

Abstract: Embodiments include methods performed by a network node, in a radio access network, RAN, that is a target node candidate for a mobility operation of a user equipment, UE. Such methods include receiving, from a source node serving the UE, a request to prepare a mobility procedure for the UE in relation to a candidate target cell associated with the network node. The request can include characteristics associated with a data connection of the UE. Such methods include determining that the UE can be admitted for the requested mobility procedure based on the characteristics, and determining to activate bicasting of the data connection. Different bicasting modes can be selected. Such methods also include transmitting, to the source node, a response that includes a bicasting configuration associated with the UE. Other embodiments include complementary methods performed by source nodes, as well as network nodes configured to perform such methods.

Abstract: Systems and methods for restricting a number of primary secondary cells (or primary cells in a secondary cell group) (PSCells) in a Mobility History Information (MHI) managed by a wireless device are disclosed. In some embodiments, a method performed by the wireless device for restricting a number of stored PSCells in MHI comprises storing PSCell history information in memory of the wireless device for a maximum number of PSCells. The PSCell history information is part of MHI stored for the wireless device. In response to the number of PSCells exceeding the maximum number of PSCells, the method further comprises removing at least some of the stored PSCell history information from the memory of the wireless device.

Abstract: Methods for managing quality-of-experience, QoE, measurements by a user equipment, UE. A first example method, carried out by a first radio access network, RAN, node, comprises transmitting (1010), to a second node in the RAN, configuration information for one or more RAN-visible QoE measurements configured for the UE by the first node. The second node may be associated with the first node with respect to at least one of: changing a configuration for the UE for multi-connectivity; mobility for the UE; RRC resume or RRC reestablishment for the UE; and switching transfer of data for the service from a path going to the UE via the first RAN node to a path going to the UE via the second RAN node.

Abstract: Techniques for managing quality-of-experience (QoE) measurements by a user equipment (UE). An example method, in a first node in a radio access network (RAN), comprises transmitting (1010), to a second node in the RAN, status information for measurements associated to one or more QoE measurements configured for the UE by the first node. The second node may be associated with the first node with respect to at least one of the following: changing a configuration for the UE for dual connectivity; mobility of the UE; RRC resume or RRC reestablishment of the UE; and switching the transfer of data for the service from a path going to the UE via the first RAN node to a path going to the UE via the second RAN node.

Abstract: Methods of operating a user equipment, UE, include storing mobility history information, MHI, independent of a radio resource control, RRC, state, wherein the MHI includes a cell identifier that is a serving cell and time information corresponding to how long the UE has stayed in the serving cell, logging public land mobile network, PLMN, specific MHI into the UE, and reporting at least a portion of the MHI to a network node. Analogous methods of operating a radio access network, RAN, node and core network node of a wireless communication system are also provided.

Abstract: A wireless device (12) configures an application layer (24) of the wireless device (12) with an application layer configuration (20-1) that governs performance of measurements at the application layer (24) and/or reporting of those measurements to a radio network layer (22) of the wireless device (12). After configuring the application layer (24) with the application layer configuration (20-1), the wireless device (12) receives at the radio network layer (22) a message (26) indicating a target configuration (16-2) with which the wireless device (12) is to be configured in association with a radio network layer procedure. Based on receiving the message (26), if each of one or more conditions are fulfilled, the wireless device (12) sends from the radio network layer (22) to the application layer (24) an instruction (30) on how the application layer (24) is to handle the application layer configuration (20-1).

Abstract: A method is performed by a wireless device for handling quality-of-experience, QoE, data, wherein the wireless device comprises a storage medium. The method comprises: receiving, from a base station, a request to perform one or more QoE measurements according to a QoE measurement configuration; initiating one or more QoE measurements according to the QoE measurement configuration; and storing results of the one or more QoE measurements in a storage portion of the storage medium allocated for the storage of QoE measurements. The storage portion has a configured maximum size.

Abstract: A method is disclosed for managing a wireless device that is operable to connect to a communication network. The communication network comprises a Radio Access Network (RAN), and the method is performed by a RAN node of the communication network. The method comprises determining, on the basis of information about an operating environment of the wireless device, configuration information for a Machine Learning (ML) model to be executed by the wireless device, and sending, to the wireless device, the determined configuration information. The ML model is operable to provide an output on the basis of which at least one RAN operation performed by the wireless device may be configured.

Abstract: Systems and methods of the present disclosure are directed to a computer implemented method performed by a Wireless Communication Device (WCD). The method includes receiving information from a network node. The information includes an Artificial Intelligence (AI)/Machine Learning (ML) model that outputs a set of output parameters that represent whether a Random Access (RA) procedure to be performed by the WCD will be successful based on a set of input parameters. Or the information includes information about or that characterizes the AI/ML model that enables the WCD to build the AI/ML model that outputs the set of output parameters that represent whether the RA procedure to be performed by the WCD will be successful based on the set of input parameters. The method includes adapting one or more RA parameters for the RA procedure based on the AI/ML model.

Abstract: A first network node and method therein for handling one or more services in a wireless communication network are disclosed. The first network node is configured to receive from a second network node an indication relating to application layer measurement configurations for one or more services for one or more wireless communication devices, determine a set of application layer measurement configurations for one or more wireless communication devices based on the received indication relating to application layer measurement configurations, and send the determined set of application layer measurement configurations or an indication of the determined set of application layer measurement configurations to the one or more wireless communication devices.

Abstract: Embodiments include methods for a user equipment (UE) to perform radio-layer and application-layer measurements in a radio access network (RAN). Such methods include receiving the following from a RAN node: a first configuration of radio-layer measurements to be performed by the UE, a second configuration of application-layer measurements to be performed by the UE, and an indication that the radio-layer measurements and the application-layer measurements should be linked. Such methods include performing application-layer measurements related to one or more applications based on the second configuration, and performing radio-layer measurements based on the first configuration. At least a portion of the radio-layer measurements are performed concurrently with at least a portion of the application-layer measurements. Other embodiments include complementary methods for RAN nodes and network nodes or functions outside the RAN. Other embodiments include corresponding apparatus configured to perform these methods.

Abstract: A method of operating a UE in a wireless communication network, includes obtaining time sharing configuration for quality of experience (QoE) measurements. The method further includes performing QoE measurements time divided between multiple applications and/or multiple application data flows processed by the UE, wherein the QoE measurements are time divided based on the time sharing configuration. Another related method of operating a network node in a wireless communication network, includes generating a time sharing configuration defining time divided QoE measurements to be performed by a UE for multiple applications and/or multiple application data flows processed by the UE, and providing the time sharing configuration to the UE.

Abstract: Embodiments described herein relate to methods and apparatus for providing handover related information. A method performed by a wireless device for reporting handover related information to a base station for mobility parameter optimization comprises: responsive to detection of a radio link failure or a Secondary Cell Group, SCG, failure after a successful handover, transmitting an indication of a handover type of the successful handover to the base station. A method performed by abase station for receiving handover related information for mobility parameter optimization comprises: responsive to a radio link failure or a Secondary Cell Group, SCG, failure occurring after a successful handover of a wireless device, receiving an indication of a handover type of the successful handover.

Abstract: Embodiments described herein relate to methods and apparatuses for performing radio measurements. A method performed by a wireless device comprises responsive to an application session starting, performing one or more Quality of Experience, QoE, measurements associated with the application; transmitting a first session feedback indication based on the QoE measurements to a base station, wherein the first session feedback indication indicates that the application session has started; and responsive to transmitting the first session feedback indication, receiving a command from the base station to perform one or more radio measurements.

Abstract: Systems and methods are disclosed for mobility handling for Quality of Experience (QoE) measurements in a cellular communications system. In one embodiment, a method performed by a User Equipment (UE) comprises receiving, at a Radio Resource Control (RRC) layer of the UE, an indication to release a QoE measurement configuration from a network node. The method further comprises either: (a) refraining, at the RRC layer of the UE, from sending a release request for the QoE measurement configuration to an application layer of the UE until a session associated with the QoE measurement configuration has ended or (b) sending, from the RRC layer of the UE to the application layer of the UE, a request to release the QoE measurement configuration that indicates that the application layer is to release the QoE measurement configuration once the session associated with the QoE measurement configuration has ended.

Abstract: A method performed by a first network node operating in with a Radio Access Technology with split architecture. The first network node is a Distributed Unit. The first network node receives one or more second indications from a second network node, a Centralized Unit. The indications comprise: i) a positive or a negative acknowledgement of a configuration conflict between a first RACH configuration in a first cell being a served cell, and a second RACH configuration in a second cell, the second cell being a neighbour cell to the first cell, ii) CU RACH assistance information associated to the conflict, the information comprising the second RACH configuration, and/or iii) a first third RACH configuration for the first cell. The first network node then updates the first RACH configuration to a second third RACH configuration, based on the indications.