A method of cell handover, a method for determining an uplink transmit power, and an apparatus are provided, to strengthen control of a network device over a terminal device. The cell handover method includes: receiving, by a terminal device, an early handover command sent by a network device, where the early handover command is used to instruct the terminal device to determine whether to perform a cell handover; measuring, by the terminal device, a downlink signal sent by the network device and/or a downlink signal sent by another network device, and determining, based on an obtained measurement report and a handover condition carried in the early handover command, whether to perform the cell handover; and executing, by the terminal device, a handover command to hand over from a current serving cell to a target cell if the terminal device receives the handover command sent by the network device.

The present specification provides a method for performing a radio link failure (RLF) recovery procedure in a wireless communication system.

The method performed by a first user equipment (UE) includes, wherein the first UE is connected to a base station via a UE-to-UMTS (Uu) link and is connected to a second UE via a sidelink, determining a path for performing the RLF recovery procedure when a RLF is detected on the Uu link, and performing an RRC connection re-establishment procedure in order to recover the RLF through the determined path.

The present specification provides a method for performing a radio link failure (RLF) recovery procedure in a wireless communication system.

The method performed by a first user equipment (UE) includes, wherein the first UE is connected to a base station via a UE-to-UMTS (Uu) link and is connected to a second UE via a sidelink, determining a path for performing the RLF recovery procedure when a RLF is detected on the Uu link, and performing an RRC connection re-establishment procedure in order to recover the RLF through the determined path.

A system described herein may provide a technique for the intelligent, automated, and dynamic selection of anchor evolved Node Bs (“eNBs”) for Next Generation Node Bs (“gNBs”) in a Non-Standalone (“NSA”) wireless network environment. An eNB may be selected as an anchor eNB based on distance to a particular gNB, and one or more sectors of the anchor eNB may be selected as anchors based on coverage areas associated with the sectors. Sectors of additional eNBs may be identified based on frequent handovers between the identified sectors of the anchor eNB and sectors of the additional eNBs. Selected eNBs and/or sectors may be notified of the designation as an anchor, and may thus provide gNB carrier information to connected User Equipment (“UE”), which may facilitate the connection of such UEs to the gNB.

In a terminal roaming steering method, a steering protocol supported by a terminal and a second AP are determined, and the terminal is steered, based on the steering protocol supported by the terminal, to roam from a first AP to the second AP.

A method is described that includes receiving, at a first cellular network, a request to accept a handover of a UE device from a second cellular network to the first cellular network. The method also includes determining, at the first cellular network, that the UE device is participating in an active emergency call. The method further includes, rejecting the request to accept the handover of the UE device in response to determining that the UE device is participating in the active emergency call.

A method is described that includes receiving, at a first cellular network, a request to accept a handover of a UE device from a second cellular network to the first cellular network. The method also includes determining, at the first cellular network, that the UE device is participating in an active emergency call. The method further includes, rejecting the request to accept the handover of the UE device in response to determining that the UE device is participating in the active emergency call.

Systems, devices, and automated processes are provided with selective access to multiple available slices of a network from at least one cell by a user equipment (UE) to enable reductions in slice failure access to the network. The method includes: accessing at a first cell, by the UE, slice A of the network wherein slice A provides higher bandwidth and lower latency access than slice B; and accessing at a second cell, by the UE, both slice A and slice B of the network wherein slice B have greater access availability than slice A wherein if the UE attempts to access the first or second cell then via cell reselection of the UE making a determination to select the second cell if the user is authorized for use of a premium service for the higher bandwidth and lower latency access of slice A else selecting by the UE the first cell for network access of slice B.

Systems, devices, and automated processes are provided with selective access to multiple available slices of a network from at least one cell by a user equipment (UE) to enable reductions in slice failure access to the network. The method includes: accessing at a first cell, by the UE, slice A of the network wherein slice A provides higher bandwidth and lower latency access than slice B; and accessing at a second cell, by the UE, both slice A and slice B of the network wherein slice B have greater access availability than slice A wherein if the UE attempts to access the first or second cell then via cell reselection of the UE making a determination to select the second cell if the user is authorized for use of a premium service for the higher bandwidth and lower latency access of slice A else selecting by the UE the first cell for network access of slice B.

A radio access network (RAN) for enabling execution of a dual active protocol stack (DAPS) procedure at a UE determines that the UE is to release at least one cell via which the UE communicates with the RAN, prior to executing the DAPS procedure (2402), causes the UE to release the at least one cell (2404), and transmits a command to the UE to execute the DAPS procedure (2406).