Abstract: The invention refers to a transfer of a User Equipment context from a source secondary network node (110A) to a target secondary network node (110B) that is different than the source secondary network node, wherein the UE (105) is served by a master network node (120) and the source secondary network node (110A), the source secondary network node (110A): transmitting a first message to the target secondary network node (110B), the first message comprising a handover request, receiving a second message comprising configuration data of the target secondary network, and after receiving the second message, transmitting to the master network node a third message comprising the configuration data of the target secondary network node; the invention further referring to a master network node (120): receiving a first message from the source secondary network node, the first message comprising a request to initiate a transfer of the UE context from the source secondary network node to the target secondary network node,

Abstract: Systems and methods are disclosed herein that relate to Dual Connectivity (DC) for a wireless device is a wireless communication network. In some embodiments, a method in a secondary node for providing, along with a master node, DC for a wireless device such that the wireless device is configured to utilize resources provided by both the master node and the secondary node in a wireless communication network is disclosed. The method comprises receiving, from the master node, a release request. The release request is a request to release a wireless device context of the wireless device or to release resources for the wireless device. The method further comprises sending a release reject to the master node. The release reject is an indication that the secondary node rejects the release request.

Abstract: Systems and methods are disclosed herein that relate to Dual Connectivity (DC) for a wireless device is a wireless communication network. In some embodiments, a method in a secondary node for providing, along with a master node, DC for a wireless device such that the wireless device is configured to utilize resources provided by both the master node and the secondary node in a wireless communication network is disclosed. The method comprises receiving, from the master node, a release request. The release request is a request to release a wireless device context of the wireless device or to release resources for the wireless device. The method further comprises sending a release reject to the master node.

Abstract: A method according to some embodiments includes receiving identification of a cell in a Secondary eNodeB (SeNB cell) that is proposed to be added to a Secondary Cell Group of a user equipment node, a Closed Subscriber Group (CSG) ID associated with the SeNB cell and a CSG Membership status of the user equipment node relative to the CSG ID; determining if the SeNB cell is operating in a closed or hybrid access mode; adding the SeNB cell to the Secondary Cell Group of the user equipment node in response to determining that the SeNB is operating in the hybrid access mode; and thereafter, verifying the CSG Membership status of the user equipment node relative to the CSG ID.

Abstract: A method in a network node is disclosed. The method comprises sending one or more packet data convergence protocol (PDCP) packet data units (PDUs) to a second network node on an internode interface, each of the one or more PDUs having an associated PDCP sequence number and an associated internode interface specific sequence number, the internode interface specific sequence numbers assigned by the network node. The method further comprises receiving feedback from the second network node.

Abstract: A radio access network (RAN) node (420) and core network (CN) node (405) each support signaling connection establishment for a user equipment (UE) (320, 325). In particular, the RAN node (420) and CN node (405) establish an interface (770) supporting signal exchange between the RAN node (420) and a plurality of core networks (CNs) supported by a CN node (405). Responsive to the RAN node (420) receiving an indication that the UE (320, 325) supports one or more of the CNs (120, 710) supported by the CN node (405), the RAN node (420) establishes, between the RAN node (420) and a given CN supported by both the CN node (405) and the UE (320, 325), a signaling connection for the UE (320, 325) over the interface (770). Responsive to receiving an initial UE message for establishing the signaling connection, the CN node (405) transmits a UE context message to the RAN node (420) for establishing the signaling connection over the interface (770) irrespective of which of the plurality of CNs (120, 710) is the given CN.

Abstract: The invention refers to a transfer of a User Equipment, UE, context within a secondary network from a secondary network node (110A) to a new secondary network node (110B), wherein the UE (105) is served by a master network node (120) and the secondary network node (110A), the method comprising: the UE receiving a first message (1202) indicative measurement configuration constructed by the secondary network node (110A); the UE performing, based on the measurement configuration, measurements of potential candidates for anew secondary network node (110B); and the UE sending a second message (1203) comprising a measurement report indicative of the measurements of potential candidates for the new secondary node.

Abstract: A Radio Access Network, RAN, node, a Core Network, CN, node and respective methods performed thereby are provided for paging a wireless device in a wireless communication network. The method performed by the RAN node comprises exchanging paging strategy information with a CN node, performing a RAN paging procedure of the wireless device according to the exchanged paging strategy information, and updating the paging strategy information based on the outcome of the performed paging procedure.

Abstract: A method performed by a source network node for handover of a wireless communication device in a first wireless communications network using a first RAT is provided. The handover is to be performed from the source network node to a target network node. The wireless communication device is configured to communicate with the source network node directly and to communicate with the source network node via a radio access node in a second wireless communications network using a second RAT. The source network node provides (401) the target network node with information about parameters relating to a communication between the wireless communication device and the source network node via the radio access node. The source network node receives (402) a feedback from the target network node. The feedback comprises an indication of whether or not the radio access node was able to keep a context of the wireless communication device in the second wireless communications network.

Abstract: A first radio network node (208) and a method for establishing a communications interface between the first radio network node (208) and a second radio network node (210). The first radio network node is configured to provide one or more Evolved Universal Terrestrial Radio Access (E-UTRA) resources and the second radio network node is configured to provide one or more New Radio (NR) resources. Further, the first and second radio network nodes are operating in a wireless communications network (200). The first radio network node obtains a Transport Network Layer (TNL) address of the second radio network node from one out of a first core network node (204); and another first radio network node (208) acting as a proxy. Furthermore, the first radio network node established a communications interface between the first and second radio network nodes based on the obtained TNL address.

Abstract: A method performed in a wireless device for handling connectivity to two network nodes. The method comprises receiving, from a first network node, a radio resource configuration message, the radio resource configuration message indicating a change in configuration of a connection towards a second network node; applying the change in configuration towards the second network node in response to the radio resource configuration message; and initiating a random access procedure towards the second network node after applying the change in configuration. The disclosure relates to corresponding wireless device, and to methods in network nodes, network nodes, computer programs and computer program products.

Abstract: A wireless device, a network node, a core node and methods therein, for managing reachability of the wireless device. The wireless device starts an AS (Access Stratum) reachable timer when entering an inactive state. If the AS reachable timer expires while still in the inactive state, the wireless device sends to the network node a reachable notification indicating that the wireless device is reachable. If entering a connected state before the AS reachable timer expires, the wireless device stops the AS reachable timer when changing from the inactive state to a connected state. If the core node receives from the network node a not reachable notification indicating that the wireless device is not reachable, the wireless device can be marked as not reachable via paging.

Abstract: Embodiments herein relate to a method performed by a second radio network node (15) for enabling communication for a wireless device (10) in a communication network (1). The communication network (1) comprises a first network and a second network, which second radio network node (15) is associated with the second network and a first radio network node (12) is associated with the first network and the first radio network node (12) and the second radio network node (15) are serving or are to serve the wireless device (10) jointly. The first network comprises partitioned sets of functionalities where in a first set of functionalities belongs to a first network slice supporting the wireless device (10), and which first set of functionalities is separated from another set of functionalities out of a total set of functionalities in the first network.

Abstract: The disclosure relates to a method (100) performed in a wireless device (1500) for handling connectivity to two network nodes (1, 2). The method (100) comprises receiving (101), from a first network node (1), a radio resource configuration message, the radio resource configuration message indicating a change in configuration of a connection towards a second network node (2); applying (102) the change in configuration towards the second network node (2) in response to the radio resource configuration message; and initiating (103) a random access procedure towards the second network node (2) after applying the change in configuration. The disclosure relates to corresponding wireless device, and to methods in network nodes, network nodes, computer programs and computer program products.

Abstract: A technique for sending data packets in a radio access network (304) including a master base station (308) and a secondary base station (310) for providing multi-connectivity to a user equipment (306) is described. As to a method aspect of the technique, at least one first data packet to be transmitted through the secondary base station (310) to the user equipment (306) is sent via a first link (314). A feedback including an acknowledgment for at least one second data packet transmitted through the secondary base station (310) to the user equipment (306) is received via a second link (316). An indicator for the at least one first data packet is delayed by a delay time depending on the first link (314) and the second link (316). At least one further data packet to be transmitted through the secondary base station (310) to the user equipment (306) is sent via the first link (314).

Abstract: A radio resource control suspend operation and a radio resource control resume operation. The terminal (702, 1300) and the communication network (110) stores respective radio resource control information related to a configured connected state of the terminal (702, 1300). The method comprises performing an admission control process during the radio resource control resume operation, where the admission control process comprises a procedure for examining whether the connected state is to be resumed according to the stored radio resource configuration information or if a radio resource reconfiguration procedure is to be performed for resuming the connected state.

Abstract: A method performed by a source network node for handover of a wireless communication device in a first wireless communications network using a first RAT is provided. The handover is to be performed from the source network node to a target network node. The wireless communication device is configured to communicate with the source network node directly and to communicate with the source network node via a radio access node in a second wireless communications network using a second RAT. The source network node provides (401) the target network node with information about parameters relating to a communication between the wireless communication device and the source network node via the radio access node. The source network node receives (402) a feedback from the target network node. The feedback comprises an indication of whether or not the radio access node was able to keep a context of the wireless communication device in the second wireless communications network.

Abstract: A method in a network node is disclosed. The method comprises sending one or more packet data convergence protocol (PDCP) packet data units (PDUs) to a second network node on an internode interface, each of the one or more PDUs having an associated PDCP sequence number and an associated internode interface specific sequence number, the internode interface specific sequence numbers assigned by the network node. The method further comprises receiving feedback from the second network node.

Abstract: A radio resource control suspend operation and a radio resource control resume operation. The terminal (702, 1300) and the communication network (110) stores respective radio resource control information related to a configured connected state of the terminal (702, 1300). The method comprises performing an admission control process during the radio resource control resume operation, where the admission control process comprises a procedure for examining whether the connected state is to be resumed according to the stored radio resource configuration information or if a radio resource reconfiguration procedure is to be performed for resuming the connected state.

Abstract: A method according to some embodiments includes receiving identification of a cell in a Secondary eNodeB (SeNB cell) that is proposed to be added to a Secondary Cell Group of a user equipment node, a Closed Subscriber Group (CSG) ID associated with the SeNB cell and a CSG Membership status of the user equipment node relative to the CSG ID; determining if the SeNB cell is operating in a closed or hybrid access mode; adding the SeNB cell to the Secondary Cell Group of the user equipment node in response to determining that the SeNB is operating in the hybrid access mode; and thereafter, verifying the CSG Membership status of the user equipment node relative to the CSG ID.