Abstract: Network nodes, such as distributed units (DUs) and central units (CUs) of distributed base stations, perform methods for managing paging operations. An example method, performed by a DU. for determining paging occasions includes: receiving (1102), by the DU from the CU, an indication as to whether a user equipment (UE) operating in an inactive state associated with a protocol for controlling radio resources supports determining inactive state paging occasions using a parameter defined for determining idle state paging occasions; determining (1104), by the DU, the inactive state paging occasions based on the indication; and paging (1106), by the DU, the UE operating in the inactive state at the inactive state paging occasions.

Abstract: A base station capable of resuming a suspended radio connection between a user device (UE) and a radio access network (RAN) receives a request to resume the suspended radio connection for the UE operating in dual connectivity (DC) with a first master node (MN) and a first secondary node (SN) (602), causes a previous configuration related to at least one of the first MN and the first SN to be released (604), and transmits, to the UE while in the inactive state, a command to resume the suspended radio connection, the command including new configuration related to at least one of the first MN, a second MN, the first SN, or a second SN (606).

Abstract: A method and system for managing candidate cell configuration for a user equipment (UE) initially in communication with at least a first node is disclosed herein. The method is implemented in a second node and comprises receiving, by the second node and from the first node, a request for connectivity with the second node, the request including at least a procedure indicator; and transmitting, by the second node to the first node and depending on the procedure indicator, one of a list of two or more conditional configurations or a single conditional configuration, the list of two or more conditional configurations or the single conditional configuration to be used by the UE.

Abstract: This document describes techniques and apparatuses for handling radio resource control (RRC) cell group configuration. In implementations, a base station (120) receives a first radio resource control message that requests a connection procedure between a user equipment (110) and the base station (e.g., 325, 425, 1325), such as a radio resource control resume request or a radio resource setup request. In response to receiving the first radio resource control message, the base station (120) generates a second radio resource control message that includes a cell-group-configuration information element that excludes a reconfiguration-with-sync information element (e.g., 330, 430, 1330). The base station (120) then transmits the second radio resource control message to the user equipment (110) (e.g., 335, 435, 1345). Afterward, the base station (120) receives, from the user equipment (110), a third radio resource control message that indicates the connection procedure is complete (e.g., 340, 440, 1350).

Abstract: This document describes techniques and apparatuses for handling radio resource control (RRC) cell group configuration. In implementations, a base station receives a first radio resource control message that requests a connection procedure between a user equipment and the base station, such as a radio resource control resume request or a radio resource setup request. In response to receiving the first radio resource control message, the base station generates a second radio resource control message that includes a cell-group-configuration information element that excludes a reconfiguration-with-sync information element. The base station then transmits the second radio resource control message to the user equipment. Afterward, the base station receives, from the user equipment, a third radio resource control message that indicates the connection procedure is complete.

Abstract: A central unit control plane (CU-CP), a central unit user plane (CU-UP), and a distributed unit (DU) of distributed base station can implement a method for managing uplink or downlink early data transmission from or to a user equipment (UE) when the UE operates in an inactive state associated with a protocol for controlling radio resources. The method includes: determining the association of logical channel identifier(s) (LCID(s)), radio bearer identifier(s) (RB ID(s)), and tunnel endpoint identifier(s) (TEID(s)) for communicating data between the UE and the CU-UP without transitioning the UE to a connected state associated with the protocol.

Abstract: A base station can perform various methods for supporting a secondary node (SN) procedure. In one example, a first base station, operating as (i) a source SN. (ii) a target SN, or (iii) a candidate SN for the SN procedure, performs a method including: communicating a message with a second base station, operating as a master node (MN), to perform the SN procedure; and determining, based on whether the SN procedure is a conditional procedure or a non-conditional procedure, whether to start a timer in response to the communicating.

Abstract: A source donor supports inter-donor migration of an integrated access backhaul (IAB) node from the source donor to a target donor, where the source donor and the target donor corresponding to respective nodes of a radio access network (RAN), and when a user equipment (UE) is in communication with the RAN via the IAB-node. The source donor transmits, to the target donor, a handover request message related to the IAB-node; receives, from the target donor, a handover request acknowledge message including an IAB-node configuration related to the inter-donor migration of the IAB-node; provides the IAB-node configuration to the IAB-node; and transmits downlink data for the UE to the target donor, for forwarding to the UE via the IAB-node.

Abstract: This document describes methods and systems for user equipment (UE) context transfer over radio access network (RAN) paging. A first base station receives from a second base station a first message that includes a context that is associated with a user equipment while the user equipment was in an engaged mode with the second base station. The first base station transmits a second message that is a paging message to the user equipment and in response receives, from the user equipment, a third message that includes a resume message authentication code identifier. After the first base station verifies the third message using the resume message authentication code identifier, the first base station transmits, to the user equipment, a fourth message that enables the user equipment to resume the engaged mode with the first base station in accordance with the context.

Abstract: A user equipment (UE) receives, from a radio access network (RAN), conditional configuration information including (i) a configuration related to a base station or a cell, and (ii) a condition to be satisfied before the UE applies the configuration (2102). The UE determines a procedure to which the conditional information pertains (2104). The UE applies, during the determined procedure, the configuration if the condition is satisfied (2106).

Abstract: This document describes methods, devices, systems, procedures, and means of maintaining communication and signaling interfaces during network role transitions, such as a secondary node change or a handover. A source secondary base station holds a source donor Central Unit (Source CU) for its own Distributed Unit (source DU) and for the Distributed Unit(s) of the node base station(s) (node DU). The source secondary base station connects to the node base station via a first F1 interface. The node DU triggers handover of the node base station and connected User Equipment (UE) from the source secondary base station to a target secondary base station. The node base station creates Transport Network Layer (TNL) connectivity toward a target donor Central Unit (Target CU) and exchanges application layer configuration data with the Target CU via a wireless backhaul link implemented utilizing the TNL connectivity.

Abstract: This document describes methods and systems for user equipment (UE) context transfer over radio access network (RAN) paging. A first base station receives from a second base station a first message that includes a context that is associated with a user equipment while the user equipment was in an engaged mode with the second base station. The first base station transmits a second message that is a paging message to the user equipment and in response receives, from the user equipment, a third message that includes a resume message authentication code identifier. After the first base station verifies the third message using the resume message authentication code identifier, the first base station transmits, to the user equipment, a fourth message that enables the user equipment to resume the engaged mode with the first base station in accordance with the context.

Abstract: This document describes techniques and apparatuses for handling radio resource control (RRC) cell group configuration. In implementations, a base station receives a first radio resource control message that requests a connection procedure between a user equipment and the base station, such as a radio resource control resume request or a radio resource setup request. In response to receiving the first radio resource control message, the base station generates a second radio resource control message that includes a cell-group-configuration information element that excludes a reconfiguration-with-sync information element. The base station then transmits the second radio resource control message to the user equipment. Afterward, the base station receives, from the user equipment, a third radio resource control message that indicates the connection procedure is complete.

Abstract: This document describes techniques and apparatuses for handling radio resource control (RRC) cell group configuration. In implementations, a base station (120) receives a first radio resource control message that requests a connection procedure between a user equipment (110) and the base station (e.g., 325, 425, 1325), such as a radio resource control resume request or a radio resource setup request. In response to receiving the first radio resource control message, the base station (120) generates a second radio resource control message that includes a cell-group-configuration information element that excludes a reconfiguration-with-sync information element (e.g., 330, 430, 1330). The base station (120) then transmits the second radio resource control message to the user equipment (110) (e.g., 335, 435, 1345). Afterward, the base station (120) receives, from the user equipment (110), a third radio resource control message that indicates the connection procedure is complete (e.g., 340, 440, 1350).

Abstract: This document describes techniques and apparatuses for handling radio resource control (RRC) cell group configuration. In implementations, a base station (120) receives a first radio resource control message that requests a connection procedure between a user equipment (110) and the base station (e.g., 325, 425, 1325), such as a radio resource control resume request or a radio resource setup request. In response to receiving the first radio resource control message, the base station (120) generates a second radio resource control message that includes a cell-group-configuration information element that excludes a reconfiguration-with-sync information element (e.g., 330, 430, 1330). The base station (120) then transmits the second radio resource control message to the user equipment (110) (e.g., 335, 435, 1345). Afterward, the base station (120) receives, from the user equipment (110), a third radio resource control message that indicates the connection procedure is complete (e.g., 340, 440, 1350).

Abstract: This document describes methods and systems for user equipment (UE) context transfer over radio access network (RAN) paging. A first base station receives from a second base station a first message that includes a context that is associated with a user equipment while the user equipment was in an engaged mode with the second base station. The first base station transmits a second message that is a paging message to the user equipment and in response receives, from the user equipment, a third message that includes a resume message authentication code identifier. After the first base station verifies the third message using the resume message authentication code identifier, the first base station transmits, to the user equipment, a fourth message that enables the user equipment to resume the engaged mode with the first base station in accordance with the context.

Abstract: This document describes methods, devices, systems, and means for determining configurations for the exchange of configuration information during network role transitions, such as a secondary node change or a handover. A secondary base station (123) node includes a central unit (CU) (410) and one or more distributed units (DU) (420). The secondary base station node is configured to receive an addition request message including configuration information and, based on the received configuration information, determine, at the CU (410) of the secondary base station (123), whether to apply a full configuration or a delta configuration. The CU (410) generates secondary cell group information, based on cell group configuration information received from the one or more DUs (420), and send an addition response message, including the generated secondary cell group information, to a master base station (122).

Abstract: This document describes methods, devices, systems, procedures, and means of maintaining communication and signaling interfaces during network role transitions, such as a secondary node change or a handover. A source secondary base station holds a source donor Central Unit (Source CU) for its own Distributed Unit (source DU) and for the Distributed Unit(s) of the node base station(s) (node DU). The source secondary base station connects to the node base station via a first F1 interface. The node DU triggers handover of the node base station and connected User Equipment (UE) from the source secondary base station to a target secondary base station. The node base station creates Transport Network Layer (TNL) connectivity toward a target donor Central Unit (Target CU) and exchanges application layer configuration data with the Target CU via a wireless backhaul link implemented utilizing the TNL connectivity.

Abstract: This document describes techniques and apparatuses for handling radio resource control (RRC) cell group configuration. In implementations, a base station (120) receives a first radio resource control message that requests a connection procedure between a user equipment (110) and the base station (e.g., 325, 425, 1325), such as a radio resource control resume request or a radio resource setup request. In response to receiving the first radio resource control message, the base station (120) generates a second radio resource control message that includes a cell-group-configuration information element that excludes a reconfiguration-with-sync information element (e.g., 330, 430, 1330). The base station (120) then transmits the second radio resource control message to the user equipment (110) (e.g., 335, 435, 1345). Afterward, the base station (120) receives, from the user equipment (110), a third radio resource control message that indicates the connection procedure is complete (e.g., 340, 440, 1350).

Abstract: This document describes methods, devices, systems, and means for determining configurations for the exchange of configuration information during network role transitions, such as a secondary node change or a handover. A secondary base station (123) node includes a central unit (CU) (410) and one or more distributed units (DU) (420). The secondary base station node is configured to receive an addition request message including configuration information and, based on the received configuration information, determine, at the CU (410) of the secondary base station (123), whether to apply a full configuration or a delta configuration. The CU (410) generates secondary cell group information, based on cell group configuration information received from the one or more DUs (420), and send an addition response message, including the generated secondary cell group information, to a master base station (122).