Abstract: A source base station receives, from a candidate base station while a user device is operating in a source cell of the source base station, a first message that indicates a conditional handover configuration providing information for user device operation within a candidate target cell of the candidate base station, but does not indicate a corresponding condition for handing over to the candidate target cell. The source base station generates the corresponding condition for handing over to the candidate target cell, and sends, to the user device, a second message that indicates the conditional handover configuration and the corresponding condition.

Abstract: A secondary node (SN) for requesting a master node (MN) to page a user equipment (UE) operating in dual connectivity (DC) with the MN and the SN receives, from a core network (CN), downlink traffic for the UE in an inactive state of a protocol for controlling radio resources, the inactive state being associated with a suspended radio connection between the UE and a radio access network (RAN) (802), and transmits, to the MN, a message that causes the MN to initiate RAN paging of the UE (804).

Abstract: One or more processors, operating in a source base station and/or a target base station, determines a change in the termination point from the source base station to the target base station for a radio bearer with a current count value according to data unit sequencing. The one or more processors determine (1806) whether a user equipment (UE) changes the data unit sequencing as a result of the change in the termination point. In a first instance, the one or more processors cause the target base station to apply (1810) the current count value to the radio bearer, in response to determining that the data unit sequencing does not change. In a second instance, the one or more processors cause the target base station to apply (1820) a new count value different from the current count value to the radio bearer, in response to determining that the data unit sequencing changes.

Abstract: A first base station providing to the UE configuration data related to a second base station and at least one condition for connecting to the second base station in order to operate in dual connectivity with the first base station and the second base station (1802). The base station receiving from the UE a first indication that the UE has conditionally applied the configuration data (1804). Subsequently to receiving the first indication, the base station receives a second indication that the at least one condition is satisfied (1806).

Abstract: One or more processors, operating in a source base station and/or a target base station, determines a change in the termination point from the source base station to the target base station for a radio bearer with a current count value according to data unit sequencing. The one or more processors determine (1806) whether a user equipment (UE) changes the data unit sequencing as a result of the change in the termination point. In a first instance, the one or more processors cause the target base station to apply (1810) the current count value to the radio bearer, in response to determining that the data unit sequencing does not change. In a second instance, the one or more processors cause the target base station to apply (1820) a new count value different from the current count value to the radio bearer, in response to determining that the data unit sequencing changes.

Abstract: To configure a UE, a DU of a distributed base station receives, from a central unit (CU) of the distributed base station, a UE context request message including a conditional indication related to a conditional procedure (2202); generates, and in response to the conditional indication, configuration information related to the conditional procedure (2220); and transmits, to the CU, a UE context response message including the configuration information (2216).

Abstract: Base stations and user devices (UEs) of this disclosure implement techniques for managing conditional configurations, which enable a UE to determine whether, when the UE receives a conditional configuration from a base station of a RAN, the UE should add the received configuration as a new configuration, or instead use the received configuration to modify an existing configuration. In different implementations, the RAN may provide the UE with configuration identifiers for this purpose, or may provide the UE with a full list of conditional configurations each time the RAN configures the UE for a conditional procedure.

Abstract: A source base station receives, from a candidate base station while a user device is operating in a source cell of the source base station, a first message that indicates a conditional handover configuration providing information for user device operation within a candidate target cell of the candidate base station, but does not indicate a corresponding condition for handing over to the candidate target cell. The source base station generates the corresponding condition for handing over to the candidate target cell, and sends, to the user device, a second message that indicates the conditional handover configuration and the corresponding condition.

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 secondary node (SN) for requesting a master node (MN) to page a user equipment (UE) operating in dual connectivity (DC) with the MN and the SN receives, from a core network (CN), downlink traffic for the UE in an inactive state of a protocol for controlling radio resources, the inactive state being associated with a suspended radio connection between the UE and a radio access network (RAN) (802), and transmits, to the MN, a message that causes the MN to initiate RAN paging of the UE (804).

Abstract: A radio access network (RAN) manages resources associated with a user equipment (UE) operating in dual connectivity (DC) with a master node (MN) and a secondary node (SN) in accordance with an initial configuration of a radio connection between the UE and the RAN (1102). The RAN detects that traffic of the UE is inactive on a radio bearer via which the UE communicates with the SN (1104). In response to the detecting, the RAN sends to the UE a command to transition from a connected state to an inactive state in which the radio connection is suspended, including one of (i) sending the command while the UE operates in accordance with the initial configuration of the radio connection (1120), or (ii) configuring the radio bearer to be terminated only at the MN (1110).

Abstract: A source base station receives, from a candidate base station while a user device is operating in a source cell of the source base station, a first message that indicates a conditional handover configuration providing information for user device operation within a candidate target cell of the candidate base station, but does not indicate a corresponding condition for handing over to the candidate target cell. The source base station generates the corresponding condition for handing over to the candidate target cell, and sends, to the user device, a second message that indicates the conditional handover configuration and the corresponding condition.

Abstract: One or more processors, operating in a source base station and/or a target base station, determines a change in the termination point from the source base station to the target base station for a radio bearer with a current count value according to data unit sequencing. The one or more processors determine (1806) whether a user equipment (UE) changes the data unit sequencing as a result of the change in the termination point. In a first instance, the one or more processors cause the target base station to apply (1810) the current count value to the radio bearer, in response to determining that the data unit sequencing does not change. In a second instance, the one or more processors cause the target base station to apply (1820) a new count value different from the current count value to the radio bearer, in response to determining that the data unit sequencing changes.

Abstract: One or more processors, operating in a source base station and/or a target base station, determines a change in the termination point from the source base station to the target base station for a radio bearer with a current count value according to data unit sequencing. The one or more processors determine (1806) whether a user equipment (UE) changes the data unit sequencing as a result of the change in the termination point. In a first instance, the one or more processors cause the target base station to apply (1810) the current count value to the radio bearer, in response to determining that the data unit sequencing does not change. In a second instance, the one or more processors cause the target base station to apply (1820) a new count value different from the current count value to the radio bearer, in response to determining that the data unit sequencing changes.

Abstract: A user device (UE) receives, from a source base station while the user device is operating in a source cell of the source base station, a conditional handover configuration providing information for user device operation within a candidate target cell of a candidate base station, and a corresponding condition for handing over to the candidate target cell of the candidate base station (1202). In some implementations, prior to determining that the condition is satisfied, the UE receives, from the source base station, a handover command message for immediate handover to a target base station (1204), and after receiving the handover command message, releases the conditional handover configuration (1206) and performs an immediate handover to the target base station (1208).

Abstract: In a base station central unit (CU) coupled to one or more base station distributed units (DUs), a base station CU determines that a UE should perform a reconfiguration with sync procedure (1204). The base station CU transmits, to a base station DU, an indication that the UE should perform a reconfiguration with sync procedure (1204). The base station CU then receives, in response to the indication, a cell group configuration IE including a reconfiguration with synchronization IE (1208), and transmits, to the base station DU, a message including the cell group configuration IE, to be forwarded to the UE (1210).

Abstract: A static transfer switch circuit for high reliability uninterruptible power supply system comprises a first switch unit which includes at least two switch sets connected in parallel and at least one second switch unit. Each of the switch sets has two controllable semiconductor switch elements connected in parallel reversely. The first switch unit includes one end connected to a bypass power source and another end connected to a load end. The second switch unit includes at least two switch sets or electromagnetic switches connected in series, and has one end connected to an output end of an uninterruptible power supply system main unit and another end connected to the load end. The static transfer switch circuit thus formed is simpler in structure and can enhance the reliability of static transfer switches used on a single machine or multi-machine uninterruptible power supply system.