A method for cell selection, a user equipment and a network side device are provided. The method includes: reading, by a UE, first system information of a first cell on a first frequency; in a case that the first system information of the first cell indicates that camping on the first cell is not allowed and an intra-frequency reselection is not allowed and in a case that a set condition is met, the UE not selecting, or not reselecting, or neither selecting nor reselecting a cell on the first frequency.

A method for cell selection, a user equipment and a network side device are provided. The method includes: reading, by a UE, first system information of a first cell on a first frequency; in a case that the first system information of the first cell indicates that camping on the first cell is not allowed and an intra-frequency reselection is not allowed and in a case that a set condition is met, the UE not selecting, or not reselecting, or neither selecting nor reselecting a cell on the first frequency.

This application discloses a channel quality information reporting method and apparatus, to resolve a prior-art problem that a communication link transmission failure is caused due to movement of user equipment. The method includes: sending, by a network device, P1 first reference signals to user equipment on a first reference signal resource, and sending P2 second reference signals to the user equipment on a second reference signal resource; performing, by the user equipment, channel quality measurement on the received first reference signal and the received second reference signal; and reporting, by the user equipment to the network device, M reference signal resource indexes, channel quality information corresponding to the M reference signal resource indexes, and reference signal types or reference signal resource set indexes corresponding to the M reference signal resource indexes.

A method for handling a Random Access (RA) procedure in the Bandwidth Part (BWP) switching operation includes: receiving, by a User Equipment (UE), Downlink Control Information (DCI) including a BWP switching indication via a Physical Downlink Control Channel (PDCCH) when the UE performs a first RA procedure on a first BWP; and performing, by the UE, at least one of a plurality of procedures in response to the BWP switching indication. The procedures include: stopping the first RA procedure on the first BWP and initiating a second RA procedure on a second BWP indicated by the BWP switching indication; and ignoring the BWP switching indication to continue with the first RA procedure.

A method for handling a Random Access (RA) procedure in the Bandwidth Part (BWP) switching operation includes: receiving, by a User Equipment (UE), Downlink Control Information (DCI) including a BWP switching indication via a Physical Downlink Control Channel (PDCCH) when the UE performs a first RA procedure on a first BWP; and performing, by the UE, at least one of a plurality of procedures in response to the BWP switching indication. The procedures include: stopping the first RA procedure on the first BWP and initiating a second RA procedure on a second BWP indicated by the BWP switching indication; and ignoring the BWP switching indication to continue with the first RA procedure.

According to certain embodiments, a method by a wireless device is provided for beam-based random access. The method includes receiving, from a network node, a handover command, the handover command comprising at least one suitability threshold. Measurements of each of a plurality of beams detected by the wireless device are performed. The measurements of the plurality of beams are compared to the at least one suitability threshold. A particular beam is selected based on the comparison, and a random access procedure is initiated.

According to certain embodiments, a method by a wireless device is provided for beam-based random access. The method includes receiving, from a network node, a handover command, the handover command comprising at least one suitability threshold. Measurements of each of a plurality of beams detected by the wireless device are performed. The measurements of the plurality of beams are compared to the at least one suitability threshold. A particular beam is selected based on the comparison, and a random access procedure is initiated.

A method, network node and user equipment (UE) for inter-frequency redirection via paging are disclosed. According to one aspect, a method in the UE includes receiving a paging message from the network node on a first frequency, the paging message directing the UE to switch from the first frequency to a second frequency, the first frequency being associated with a first slice and the second frequency being associated with a second slice; and performing one of a radio resource control, RRC, resume and an RRC setup procedure on the second frequency. According to another aspect, a method in a network node include generating and sending the paging message.

A method, network node and user equipment (UE) for inter-frequency redirection via paging are disclosed. According to one aspect, a method in the UE includes receiving a paging message from the network node on a first frequency, the paging message directing the UE to switch from the first frequency to a second frequency, the first frequency being associated with a first slice and the second frequency being associated with a second slice; and performing one of a radio resource control, RRC, resume and an RRC setup procedure on the second frequency. According to another aspect, a method in a network node include generating and sending the paging message.

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.