Methods, systems, and devices for wireless communications are described. One method may include transmitting a first signal instructing a user equipment (UE) to transition a state of a secondary cell associated with the UE; determining an allocation of resources for the UE to communicate with the secondary cell; and transmitting a second signal including an indication of an active bandwidth part (BWP) used for the allocation of resources based on the determining. The active BWP and the first signal may indicate the transition of the state of the secondary cell.

A method of receiving downlink channel, a method of sending downlink channel, a terminal and a base station are provided. The method includes: determining a TCI state of a downlink control channel, where in the case that the terminal switches back to an original BWP, the TCI state is a TCI state of a CORESET last used on the original BWP by the terminal, and the downlink control channel is sent on the CORESET of the original BWP; and receiving the downlink control channel according to the TCI state.

Provided are a configuration signaling execution control method and apparatus, a device, a system and a storage medium. The method includes: in a beam recovery process and in a case of receiving configuration signaling, deciding an execution environment of the configuration signaling; and determining an execution policy of the configuration signaling according to a decision result.

Provided are a configuration signaling execution control method and apparatus, a device, a system and a storage medium. The method includes: in a beam recovery process and in a case of receiving configuration signaling, deciding an execution environment of the configuration signaling; and determining an execution policy of the configuration signaling according to a decision result.

Examples of the present disclosure provide a data transmission method performed by a terminal. The method includes: sending a resource block (RB) location switching request to a base station; receiving, from the base station, feedback information for the RB location switching request; and sending data on an RB-before-switching or on an RB-after-switching according to the feedback information.

Examples of the present disclosure provide a data transmission method performed by a terminal. The method includes: sending a resource block (RB) location switching request to a base station; receiving, from the base station, feedback information for the RB location switching request; and sending data on an RB-before-switching or on an RB-after-switching according to the feedback information.

Methods for a New Radio (NR)-based, Low Earth Orbit (LEO) Non-Terrestrial Networks (NTN) are proposed to improve cell selection and reselection by using satellite assistance information. Different from traditional 5G New Radio systems, the LEO NTN can provide the next cell information along the satellite trajectory using System Information Broadcast (SIB). The assistance information can include satellite's long term ephemeris in the format of Position Velocity (PV) information or details of satellite's other orbital parameters. During TN-NTN join coverage, as TN cells are expected to have a better coverage then NTN cells, the network can assign higher priority to the TN cells over NTN cells. Similarly, for a mobility involving earth-fixed and earth-moving beams (cells), earth-fixed cells can be prioritized over earth-moving beams for cell reselection.

Methods for a New Radio (NR)-based, Low Earth Orbit (LEO) Non-Terrestrial Networks (NTN) are proposed to improve cell selection and reselection by using satellite assistance information. Different from traditional 5G New Radio systems, the LEO NTN can provide the next cell information along the satellite trajectory using System Information Broadcast (SIB). The assistance information can include satellite's long term ephemeris in the format of Position Velocity (PV) information or details of satellite's other orbital parameters. During TN-NTN join coverage, as TN cells are expected to have a better coverage then NTN cells, the network can assign higher priority to the TN cells over NTN cells. Similarly, for a mobility involving earth-fixed and earth-moving beams (cells), earth-fixed cells can be prioritized over earth-moving beams for cell reselection.

This application discloses a handover method and apparatus. During handover, a source RAN node includes, in a handover message, an indication indicating whether a PDU session supports network slice re-mapping and/or an indication indicating whether the PDU session supports network slice fallback. A target RAN node performs admission control based on the indication, and notifies the source RAN node of an identifier of a network slice to which the PDU session is re-mapped or an indication indicating whether the PDU session falls back to a default network slice. The source RAN node forwards the notification to a terminal device. This reduces signaling overheads caused during handover interaction.

This application discloses a handover method and apparatus. During handover, a source RAN node includes, in a handover message, an indication indicating whether a PDU session supports network slice re-mapping and/or an indication indicating whether the PDU session supports network slice fallback. A target RAN node performs admission control based on the indication, and notifies the source RAN node of an identifier of a network slice to which the PDU session is re-mapped or an indication indicating whether the PDU session falls back to a default network slice. The source RAN node forwards the notification to a terminal device. This reduces signaling overheads caused during handover interaction.