A technique relating to resource configuration in a wireless communication network. A terminal device in the wireless communication network receives information about supplemental resource from a source cell. Then the terminal device determines a time interval, in which the supplemental resource is available to the terminal device, in a transition period of a handover from the source cell to a target cell based on a timer associated with a random access procedure in the handover. In this way, the terminal device may use the supplemental resource during the handover.

Provided is a method for operating a transmission buffer in a wireless communication system. The method is performed by a user equipment (UE), and comprises detecting, in a switching layer, whether a transmission of data on a first transmission link is successful via the lower layer, determining whether to keep the transmission of the data on the first transmission link or to perform the transmission of the data on a second transmission link when the transmission of the data is not successful and performing the transmission of the data on the determined transmission link.

Embodiments of the present invention disclose a radio bearer handover method, a base station device, and a network node. A base station receives information sent by a network node. The information includes a bearer identifier and dedicated information, and the dedicated information indicates that a bearer corresponding to the bearer identifier supports a handover to a sidelink radio bearer.

The present specification relates to a method for transmitting and receiving data in a wireless communication system supporting device-to-device (D2D) communication, and the method performed by a first terminal comprises the steps of: acquiring a resource pool used for D2D communication, wherein the resource pool includes either a scheduling assignment (SA) resource pool indicating a resource region through which an SA is transmitted or a data resource pool indicating a resource region through which D2D data is transmitted; transmitting, to a second terminal through the SA resource pool, the SA including information related to D2D data transmission; and transmitting the D2D data to the second terminal.

In one embodiment, a portable, networked, computing device comprises a processor, a plurality of radios, and a memory. The device may be operable to pair, by at least one of the radios, with a device associated with a user. The device may then monitor, by one of the radios, a signal for a connection established with a first network. When the device determines that the signal for the first network has dropped below a threshold level of quality, it may enable access point mode for at least one of the paired devices by turning on a radio to establish a connection with a second network and thereby providing connectivity to the second network for the at least one of the paired devices. If multiple networks are available, the device may select an optimal network based on an assessment of one or more factors.

Systems, methods, apparatuses, and computer program products for reducing handover interruption time using sidelink communication are provided. For example, the handed-over (remote) user equipment may exchange uplink and downlink data with the target cell via the additional or assisting link to another relay user equipment while the remote user equipment performs the random access procedure (random access channel procedure) and may establish its own direct radio link to the target cell.

Examples include a method for operating a specific mobile device moving from a source cell to a destination cell. The method comprises using a source sidelink managed by a source base station, whereby the specific and following mobile devices are located within the source cell. The method also comprises switching from the source sidelink to a fallback link, the fallback link resources being managed independently from any base station. The method further comprises switching from the fallback link to a destination sidelink managed by a destination base station, whereby the specific device and the following device are located within the destination cell.

According to an aspect of the disclosure, a method of performing a conditional handover by a vehicle-to-everything (V2X) user equipment (UE) may include: transmitting a cell measurement report to a serving cell; receiving conditional handover configuration information from the serving cell; determining whether to perform a handover, based on the conditional handover configuration information; and when it is determined to perform the handover, performing random access to a target cell.

In the present invention, provided is a method for performing handover, by a first terminal, in an inter-vehicle communication system. Here, the method for performing handover, by the first terminal, may comprise the steps of: receiving information on a first bias value from a base station; receiving information on a second bias value from a second terminal; and performing handover on the basis of the first bias value and the second bias value. Here, the first terminal and the second terminal are configured in the same terminal group, the first bias value is a bias value for the terminal group, and the second bias value may be a bias value for the first terminal.

The present disclosure relates to the field of mobile communications technologies, and in particular, to a link setup method and a device. A first network device may obtain first routing information of a direct link that is set up between a first terminal and a second terminal. In this way, when the two terminals communicate with each other, a service data transmission path may be the first terminal -> a first access network device -> a second access network device -> the second terminal, or may be the first terminal -> a first access network device -> a first core network device -> a second access network device -> the second terminal. Either of the paths is shorter than a prior-art transmission path. Therefore, a transmission delay is shortened, transmission efficiency is improved, and a transmission resource is saved.