Telefonaktiebolaget Lm Ericsson (publ)

Cecilia Eklöf

Nianshan Shi

Waikwok Kwong

Mattias Bergström

Icaro Leonardo Da Silva

Icaro L J Da Silva

Johan Rune

Robert Petersen

John Walter Diachina

Stefan Wager

Oscar Ohlsson

Angelo Centonza

Gunnar Heikkilä

Julien Muller

Walter Müller

Pradeepa Ramachandra

Laetitia Falconetti

Nicklas Johansson

Filip Barac

Ali Parichehrehteroujeni

Mårten Sundberg

Zhan Zhang

Pontus Wallentin

Christopher Peter Callender

Jens Bergqvist

Oumer Teyeb

Gerardo Agni Medina Acosta

Robert Karlsson

Kazuyoshi Uesaka

Mark Curran

Atle Monrad

Sofia Brismar

Icaro Leonardo J Da Silva

Luca Lunardi

Mattias BERGSTRÖM

Systems and methods are disclosed herein for handling Conditional Primary Secondary Cell (PSCell) Change (CPC) upon Secondary Node (SN) release. In one embodiment, a method performed by a Master Node (MN) for SN release for a User Equipment (UE) that is operating in Multi-Radio Dual Connectivity (MR-DC) and configured with CPC comprises determining that a SN for a UE that is operating in MR-DC and configured with CPC is to be released. The method further comprises, responsive to determining that the SN for the UE that is operating in MR-DC and configured with CPC is to be released, sending a first message to a target SN (T-SN) associated with a CPC configuration for the UE, the first message being indicative of a CPC cancellation, and sending a second message to the UE, the second message comprising an explicit or implicit indication that the UE is to release the CPC configuration.

Handling conditional PSCell change (CPC) upon SN release

Systems and methods are disclosed herein for Quality of Experience (QoE) measurements handling at overload in a Radio Access Network (RAN) of a cellular communications system. In one embodiment, a method performed by a first RAN node for handling QoE measurement configuration and/or reporting during RAN overload comprises performing one or more actions related to one or more aspects of QoE measurement configuration, QoE measurement reporting, or both QoE measurement configuration and QoE measurement reporting that mitigate an RAN overload condition. In one embodiment, performing the one or more actions comprises performing one or more actions related to transfer of one or more aspects of QoE measurement configuration from the first RAN node to a second RAN node, transfer of one or more aspects of QoE measurement reporting from the first RAN node to the second RAN node, or both.

QoE measurement handling at overload in RAN

A method () performed by a T-SN for cancelling a conditional PSCell, change (CPC). The method includes the T-SN receiving (s) a request for a CPC configuration for a UE, wherein the request was transmitted by a first network node (NN), and the UE is connected to the first NN and is also connected to a second NN. The method also includes the T-SM transmitting (s) to the first NN a response to the request, the response including the CPC configuration for the UE. The method further includes, after transmitting the response, the T-SN transmitting (s) to the first NN a cancellation indication indicating that the CPC configuration for the UE is cancelled.

Target secondary node initiated cancel of conditional PSCell change

A UE method includes receiving an RRC reconfiguration message, RRCReconfiguration, from a master node. The RRCReconfiguration message includes a secondary cell group, SCG, measurement configuration comprising a configuration of at least one measurement identifier referred in an execution condition for a conditional primary secondary cell, PSCell, change, CPC. The SCG measurement configuration is included within another RRC reconfiguration message, RRCReconfiguration***, to be applied by the UE upon reception; and at least one conditional reconfiguration for CPC, the conditional reconfiguration comprising for a target candidate cell of a candidate target-secondary node: the SCG configuration; and the execution condition for CPC, where the UE is to apply the SCG configuration upon fulfillment of the execution condition for CPC. The UE applies the reconfiguration message and the SCG measurement configuration, within the RRCReconfiguration*** message. The UE monitors the fulfillment of the execution conditions for the target candidate cell.

SN-initiated conditional PSCell change (CPC) with SN change

Embodiments include methods for a first radio network node (RNN) in a wireless network to configure quality of experience (QoE) measurements by user equipment (UEs). Such methods include receiving, from a measurement function in the wireless network, a QoE measurement configuration (QMC associated with one or more service types; and configuring one or more UEs with the QMC. Such methods also include sending to a second RNN in the wireless network, a first request for handover of a particular one of the UEs from a first cell served by the first RNN via a first radio access technology (RAT) to a second cell served by the second RNN via a second RAT. The first request includes the QMC. Other embodiments include complementary methods performed by a second RNN or by a UE, as well as first RNNs, second RNNs, and UEs configured to perform such methods.

Quality-of-experience (QoE) measurements it inter-radio access technology (IRAT) handover

Embodiments include methods, performed by a user equipment, UE, for reporting failures related to mobility operations by the UE to a network node in a radio access network, RAN. Such methods include logging () information associated with a plurality of failures during conditional handover, CHO, operations related to a source cell and one or more first target cells. Such methods also include, after a successful mobility operation to a second target cell served by the network node, reporting () the logged information, associated with the plurality of failures, to the network node. Other embodiments include complementary methods performed by a network node, as well as UEs and network nodes configured to perform such methods.

Reporting failures of conditional handover mobility operations

Methods and apparatuses are disclosed for conditional handover in handover command. In one embodiment, a wireless device (WD) is configured to receive a request to perform a mobility procedure for a wireless device from a source cell supported by a source network node to a target cell supported by the network node, the request including a current configuration for the wireless device in the source cell; upon receiving the request, determine to prepare a conditional reconfiguration for the wireless device; and transmit the conditional reconfiguration and a radio resource control, RRC, reconfiguration for the wireless device, the RRC reconfiguration being associated with the requested mobility procedure from the source cell to the target cell supported by the network node and the conditional reconfiguration being associated with a target candidate cell determined by the network node.

Conditional handover in handover command

Methods for communicating a Quality of Experience (QoE) measurement are provided. In embodiments disclosed herein, a wireless device communicates the QoE measurement to a base station based on Radio Resource Control (RRC) segmentation. In this regard, the wireless device receives an indication that indicates whether the base station can support the RRC segmentation. Accordingly, the wireless device transmits the QoE measurement to the base station based on the RRC segmentation if the indication indicates that the base station can support the RRC segmentation. By transmitting the QoE measurement based on the RRC segmentation, the wireless device can communicate more QoE information to the base station in a larger QoE measurement file (e.g., 8000 kilobytes).

RRC segmentation and QoE

A method performed by a wireless device () comprises receiving (), from a master node (A) for multi-connectivity operation, a configuration message () which includes a master configuration () and one or more conditional PSCell configurations (). The method also comprises transmitting () a first message () in response to the configuration message (). The first message () indicates acknowledgement of receipt, applying of, and/or understanding of the master configuration (). The method also comprises, after transmitting () the first message (), when the condition for applying the PSCell configuration () of at least one of the one or more conditional PSCell configurations () is fulfilled, transmitting (), to the master node (A), a second message () that includes an indication () indicating application by the wireless device () of the PSCell configuration () of at least one of the one or more PSCell configurations ().

Conditional configuration in multi-connectivity operation

A technique for Quality of Experience (QoE) or Application Layer (AL) measurements at high load is described. As to one method aspect of the technique for reporting QoE measurements from a radio device () wirelessly connected or connectable to a radio access network, RAN (), the method () comprises or initiates a step of receiving () a stop control message () from or through the RAN () at the radio device (), the stop control message () being indicative of a command for storing () results of the QoE or AL measurements at the radio device () and stopping () the radio device () from reporting () the stored results of the QoE or AL measurements to or through the RAN.

Technique for reporting quality of experience (QoE)—and application layer (AL) measurements at high load

A wireless device () is configured to receive, from a radio network node, a message () that includes a condition monitoring configuration () and a conditional mobility configuration (). The condition monitoring configuration () configures the wireless device () to monitor a condition. The wireless device () is to apply the conditional mobility configuration () when the wireless device () detects fulfillment of the condition. The wireless device () is configured to process the condition monitoring configuration () upon receiving the message (), and to process the conditional mobility configuration () subject to a processing precondition being met.

Conditional mobility in a wireless communication network

According to an aspect, a source node determines () that a UE served by the source node is a candidate for conditional handover configuration. The source node sends (), to a target node for conditional handover of the UE, a conditional handover request that includes one or more parameters indicative of a likelihood that handover of the UE to the target node will be executed. The target node receives () the request and parameters and allocates () resources for the UE, taking into account the likelihood that handover of the first UE to the target node will be executed. The target node sends () handover configuration information for the first UE to the source node, in response to the conditional handover request.

Conditional handover execution probability information to potential target node

Embodiments include methods for conditional mobility in a radio access network (RAN), performed by a user equipment (UE). Such methods include receiving, from one or more RAN nodes (e.g., source RAN node and/or target RAN node), one or more mobility-related messages that include: a first indication of a mobility operation; a second indication of a triggering condition for the mobility operation; a second measurement configuration related to the triggering condition; and a third measurement configuration related to one or more target cells. Such methods also include, based on the second measurement configuration, detecting fulfillment of the triggering condition with respect to a particular one of the target cells and executing the mobility operation towards the particular target cell, and subsequently performing and reporting third measurements in the particular target cell based on the third measurement configuration. Embodiments also include complementary methods performed by source RAN nodes and target RAN nodes.

Handling of measurement configuration upon conditional mobility execution

The invention refers to a method, in a wireless device operating in a wireless communication network, the method comprising: receiving, from a source node, a conditional handover command, the conditional handover command including or being associated with a triggering condition for execution of handover to a target cell or target beam; detecting, that the triggering condition is met; if a conditional handover configuration is not yet completed, executing the handover to the target cell or beam without sending a message confirming completion of a conditional handover configuration to the source node, and otherwise sending the message confirming completion of the conditional handover configuration to the source node; the invention further relates to a corresponding wireless device.

Optional sending of complete message in conditional handover

A method performed by a target node () in a communications network (). The method is for handling reconfigurations of a User Equipment (UE) () during a conditional handover. The target node () has received a conditional handover request for the UE () from a source node () and has sent a handover request acknowledgement to the source node () based on a current configuration of the UE (). The target node () performs () synchronization and random access with the UE () based on the UE configuration used for the handover request acknowledgement. The target node () obtains (), after performing () the synchronization, information regarding an updated configuration of the UE (). The updated configuration has taken place since the handover request acknowledgement was sent to the source node (). At least one of the following applies: i) the information is obtained from the UE () in a handover complete message, and ii) the information is obtained from the source node () at the time of the handover execution.

Target node, user equipment, source node and methods performed thereby for handling reconfigurations of the user equipment during a conditional handover

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Täby, Sweden

Cecilia Eklöf