The present disclosure provides a method and device for wireless communications, comprising receiving a first service through a first radio bearer; receiving a first signaling, transmitting a first report; and receiving the first service through at least a latter of the first radio bearer and the second radio bearer; wherein when a first condition is satisfied, the first report is transmitted; the first condition comprises that a reception of the first service is modified from the first radio bearer to the second radio bearer; a bearer type of the first radio bearer is different from a bearer type of the second radio bearer, and the bearer type comprises a non-unicast bearer and a unicast bearer. By reasonably determining a radio bearer and transmitting a first report, the present disclosure reduces packet missing rate and interruption and improves reliability.

A method for centralized device tracking includes: obtaining, at a first UE from multiple sources, first multi-source position information corresponding to a second UE; determining, based on the first multi-source position information, second multi-source position information corresponding to the second UE; identifying a third UE, separate from the first UE, to which the second multi-source position information is relevant; and sending migration information to the third UE, the migration information comprising an identifier of the second UE and comprising the first multi-source position information, or the second multi-source position information, or a combination thereof.

The present disclosure relates to a communication technique for fusing, with an IoT technology, a 5G communication system for supporting a higher a data transmission rate than a 4G system, and a system therefor. According to various embodiments of the present disclosure, a method performed by a base station of a serving cell in a wireless communication system may comprise the steps of: transmitting configuration information for an artificial intelligence (AI)-based handover to a terminal; receiving, from the terminal, a handover request to a target cell according to the AI-based handover; and transmitting, to the terminal, a configuration message for access to the target cell, in response to the handover request, wherein the target cell is identified on the basis of a neural network (NN) configured for the AI-based handover and a measurement result of the terminal.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a measurement of a wireless signal from a first base station of a network, the measurement comprising one or more of: a Doppler shift of the wireless signal or an angular variation of the wireless signal; determine that a high speed train or tunneling (HSTT) event has occurred based at least in part on the measurement; provide, to the first base station, an indication that the HSTT event has occurred; and receive, from the first base station, configuration information to: configure the UE for a handover to a second base station of the network, configure the UE for beam switching, or cause the UE to change a connection state. Numerous other aspects are provided.

A cell handover method is disclosed. A terminal obtains a signal attenuation observation instruction, detects, in response to the signal attenuation observation instruction, signal strength and a signal attenuation parameter of a first cell, and sends the signal strength and the signal attenuation parameter to a network side device. Then, the network side device determines, based on the signal strength and the signal attenuation parameter, whether a cell handover is to be performed by the terminal. After performing a cell handover for the terminal is determined, the terminal is triggered to perform the cell handover from the first cell to a second cell. The first cell is a serving cell of the terminal, and the second cell is a neighboring cell of the first cell.

A switching method and a device in a sidelink relay architecture are provided. The method is performed by a remote terminal and includes: receiving a first message from a network device, where the first message includes switching information; and performing, according to the switching information, switching from a source link to a target link, where at least one of the source link and the target link is a relay link.

A method and apparatus for updating a radio notification area. The method is applicable to a terminal configured with at least a first subscriber identity module (SIM) card and a second SIM card, and includes: receiving configuration information sent by a first base station; when the second SIM card is to be handed over to a second base station, sending radio notification area update information of the first SIM card to the second SIM card based on the configuration information in response to that the second base station is located outside a radio notification area configured by the first base station for the first SIM card; and sending, through the second SIM card and to the first base station, a measurement report of handing over to the second base station, wherein the measurement report includes the radio notification area update information of the first SIM card.

Disclosed are a method and a device for group handover in a communication system. An operation method of a header terminal comprises the steps of: transmitting a configuration information message including a first indicator indicating a measurement reporting subject to member terminals participating in the sidelink groupcast communication; if the measurement reporting subject indicated by the first indicator is the header terminal, receiving, from the member terminals, measurement reporting messages including results of measurement operations performed for at least one neighboring base station; and transmitting a configuration reporting message including the results of the measurement operations to a serving base station accessed by the header terminal. Therefore, the performance of the communication system can be improved.

A device may include a processor configured to determine that a user equipment (UE) device, attached to a base station, is within a coverage area of a small cell operating on a first channel, and that the UE device is not a member of the small cell and is experiencing interference on the first channel. The processor may be further configured to send an instruction to the UE device to provide a measurement report for base stations operating on another band or channel different from the first channel; receive a measurement report from the UE device identifying one or more neighboring base stations operating on the other band or channel; and perform a handover of the UE device to a neighboring base station, wherein the UE device is to communicate with the neighboring base station using the other band or channel.

Aspects of the subject disclosure may include, for example, detecting at a mobile device a communication failure of a data connection between the mobile device and a source core network of a plurality of core networks available to the mobile device, the mobile device communicating with a respective core network of the plurality of core networks through a radio access network, selecting a destination core network of the plurality of core networks, and handing off the data connection from the source core network to the destination core network. Other embodiments are disclosed.