Systems and methods for facilitating handover reduction in satellite systems are disclosed. A system may include a processor and a memory storing instructions, which when executed by the processor, may cause the processor to detect a user terminal that is selected for a handover procedure. The handover procedure may facilitate a switch from a source beam to a target beam. Based on input data, the processor may evaluate an ideal time value pertaining to a pre-defined time instance at which a scheduled handover is to be performed. The scheduled handover may correspond to at least one of a scheduled change in operating frequency within same beam or a scheduled feeder link handover due to a change in gateway communicating with the satellite. Based on the evaluation and the input data, the processor may estimate an optimized time value that pertains to an optimized time instance associated with an expected handover reduction.

The present disclosure relates to handling a secondary cell group (SCG) failure in wireless communications. According to an embodiment of the present disclosure, a method performed by a wireless device in a wireless communication system comprises: receiving, from a source primary secondary cell (PSCell), a conditional mobility command including a mobility condition for a target PSCell; initiating a secondary cell group (SCG) failure recovery procedure and transmitting SCG failure information related to the SCG failure recovery procedure to a primary cell (PCell), based on detecting an SCG failure related to the source PSCell: based on that the mobility condition for the target PSCell is satisfied during the SCG failure recovery procedure: transmitting, to the PCell, a new PSCell indication informing a mobility from the source PSCell to the target PSCell; and performing a random access to the target PSCell for the mobility.

Embodiments of the present application provide wireless communication method and device, which can obtaining a determination of a signal quality of a cell according to a measurement result of at least one synchronization signal block of a plurality of synchronization signal blocks transmitted in the cell, thereby realizing a judgment of the signal quality of the cell in a 5G system. The method includes: performing, by a terminal device, measurement on at least one synchronization signal block of a plurality of synchronization signal blocks transmitted in a first cell; determining, by the terminal device, a signal quality corresponding to the first cell according to a measurement result.

An electronic device comprises a plurality of antennas, wherein each of the plurality of antennas are spaced apart from each other, a first communication circuit electrically connected with the plurality of antennas, a plurality of array antennas comprising a first array antenna disposed adjacent to at least one of the plurality of antennas, and a second array antenna disposed adjacent to another antenna different from the at least one antenna of the plurality of antennas, a second communication circuit electrically connected with the first array antenna and the second array antenna, and at least one control circuit electrically connected with the first communication circuit and the second communication circuit, wherein the at least one control circuit is configured to obtain receive sensitivities of the plurality of antennas through the first communication circuit; activate at least one array antenna of the first array antenna and the second array antenna through the second communication circuit based at least on the receive sensitivities; and control the activated at least one array antenna to form at least one beam for communication with an external electronic device.

The present application discloses a method and a device used in a communication node for wireless communications. The communication node receives a first signaling, the first signaling being used for indicating at least a first target cell and a second target cell; and performs a first handshake process for the first target cell; and performs a second handshake process for the second target cell; and determines whether to initiate an RRC connection re-establishment procedure according to whether at least one of the first handshake process or the second handshake process is successfully completed; neither the first handshake process nor the second handshake process being successfully completed is used to determine to initiate the RRC connection re-establishment procedure; either the first handshake process or the second handshake process being successfully completed is used to determine not to initiate the RRC connection re-establishment procedure.

The invention relates to an improved handover procedure for a mobile terminal. Under control of the target base station, the mobile terminal is to perform a handoff to a target base station, wherein it is to be configured for communication with the target base station via a target radio cell comprising a downlink carrier and an uplink carrier. The mobile terminal receives a handoff command message for the handoff to the target base station including a handoff execution condition as trigger for executing handoff to the target base station. Then, the mobile terminal determines, based on the received handoff execution condition, whether or not the mobile terminal is to trigger execution of the handoff to the target base station. In case the mobile terminal determines that it is to trigger execution of the handoff to the target base station, the mobile terminal executes the handoff to the target base station.

Embodiments of the present disclosure relate to a method, a device and a computer-readable medium for guaranteeing communication service. According to embodiments of the present disclosure, a source network device that currently serves the terminal device transmits, to a target network device which will serve the terminal device, information about the amount of resources of network slices utilized by the terminal device. The target network device configures the amount of resources based on the information. In this way, successful handover of the terminal device from the source network device to the target network device is guaranteed, so as to ensure continuity of communication services of the terminal device. In addition, embodiments of the present disclosure creates a network slice in the target network device, which avoids possible interruptions of communication service caused by mapping from the terminal device to the slices supported by the target network device.

Example communication methods and apparatus are described. One example method includes sending a handover request message to a target base station, where the handover request message is used to instruct to hand over a first session of a terminal device from the source base station to the target base station. The handover request message includes first information. The first information includes information about at least one quality of service (QoS) flow in the first session. The first session is a session corresponding to the terminal device. The source base station receives a handover request response message from the target base station, where the handover request response message includes second information. The second information is used to indicate that the target base station accepts a first QoS flow in the first session, and the at least one QoS flow includes the first QoS flow.

An embodiment of the present disclosure provides a measurement reporting method and device. The method includes: starting a timer according to a measurement configuration of a target cell transmitted by a network side; determining, before the timer expires, that identification information of the target cell cannot be obtained; and reporting, to the network side, that the identification information of the target cell cannot be obtained by the UE.

An operating method of a node in a wireless communication system, and a device using the method are provided. The method transmits a link instability signal notifying a child node of the instability of a link if the link with a parent node is unstable, monitors, during a connection recovery time, whether a link recovery signal is received from the parent node, and transmits, to the child node, a handover trigger signal if the link recovery signal has not been received within the connection recovery time.