Provided in the present disclosure are a method and a device for providing a service to a user device by using a network slice in a communication system. A method according to one embodiment of the present disclosure can comprise the steps of: receiving, from a second network function device, management function configuration information about a first core network slice, including the quota of a first core network slice; reporting status information about the first core network slice to a third network function device on the basis of the management function configuration information; receiving, from the third network function device, parameters for controlling the status of the first core network slice; and controlling access of a terminal that is to use the first core network slice, on the basis of the status information about the first core network slice and the parameters for control.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. Provided are a method and an apparatus for allocating V2X resources of an SN to a UE in a dual connectivity supporting network and also a method and an apparatus for controlling a dormant state of an SCell.

A base station schedules a user equipment (UE) for uplink air link resources, e.g., unlicensed spectrum PUSCH resources, corresponding to one or more slots and, in some embodiments, at least one mini-slot. There may be, and sometimes are gaps between two scheduled slots and/or between a scheduled slot and a scheduled mini-slot. Different uplink air link resources corresponding to a schedule slot or mini-slot may, and sometimes do, use different set of frequencies. The base station generates and sends to the UE a single UL grant which grants uplink air link resources corresponding to the composite of resource allocations corresponding to the one or more slots and, in some embodiments, at least one mini-slot. The single UL grant may, and sometimes does, communicates gap information and frequency information.

A base station schedules a user equipment (UE) for uplink air link resources, e.g., unlicensed spectrum PUSCH resources, corresponding to one or more slots and, in some embodiments, at least one mini-slot. There may be, and sometimes are gaps between two scheduled slots and/or between a scheduled slot and a scheduled mini-slot. Different uplink air link resources corresponding to a schedule slot or mini-slot may, and sometimes do, use different set of frequencies. The base station generates and sends to the UE a single UL grant which grants uplink air link resources corresponding to the composite of resource allocations corresponding to the one or more slots and, in some embodiments, at least one mini-slot. The single UL grant may, and sometimes does, communicates gap information and frequency information.

A communication apparatus according to the present disclosure functions as an access point, transmits/receives information to be shared that should be shared with another access point when a radio communication connection has been requested from a first client, and calculates, for the access point and the other access point, scores that indicate priority as a connection destination of the first client using the information to be shared. Then it is determined whether it is necessary to establish the radio communication connection with the first client based on the above scores and establishes, when it is determined that it is necessary to establish the radio communication connection, the radio communication connection with the first client.

A method of resolving an uplink collision and pre-empting portions of an uplink channel is provided. A UE receives an uplink cancellation indication from a base station. The UE identifies that a UCI transmission on a PUCCH transmission overlaps with a second uplink transmission. The UE determines whether to apply the ULCI to the PUCCH transmission and the second uplink transmission before or after applying a multiplexing rule to resolve the collision. The UE transmits an uplink communication to the base station based on the ULCI and the multiplexing rule.

A method of resolving an uplink collision and pre-empting portions of an uplink channel is provided. A UE receives an uplink cancellation indication from a base station. The UE identifies that a UCI transmission on a PUCCH transmission overlaps with a second uplink transmission. The UE determines whether to apply the ULCI to the PUCCH transmission and the second uplink transmission before or after applying a multiplexing rule to resolve the collision. The UE transmits an uplink communication to the base station based on the ULCI and the multiplexing rule.

A method of handling NAS signaling connection release under mobility management congestion control for MUSIM UE is proposed. A MUSIM UE has established a NAS signaling connection on a first USIM in connected mode. Later on, the MUSIM UE has more important job to be started on the second USIM. The MUSIM UE wishes to initiate a service request procedure by transmitting a service request to the network, to release the NAS signaling connection on the first USIM. However, under the 5GMM/EMM signaling congestion condition with timer T3346 running, the AMF/MME rejects 5GMM/EMM signaling requests from UE. In one novel aspect, the MUSIM UE requests the network to release the NAS signaling connection while timer T3346 is still running. As a result, the MUSIM UE is able to start the more important job on the second USIM, or to improve user experience on the second USIM.

A method of handling NAS signaling connection release under mobility management congestion control for MUSIM UE is proposed. A MUSIM UE has established a NAS signaling connection on a first USIM in connected mode. Later on, the MUSIM UE has more important job to be started on the second USIM. The MUSIM UE wishes to initiate a service request procedure by transmitting a service request to the network, to release the NAS signaling connection on the first USIM. However, under the 5GMM/EMM signaling congestion condition with timer T3346 running, the AMF/MME rejects 5GMM/EMM signaling requests from UE. In one novel aspect, the MUSIM UE requests the network to release the NAS signaling connection while timer T3346 is still running. As a result, the MUSIM UE is able to start the more important job on the second USIM, or to improve user experience on the second USIM.

A method for handling a collision of a UE-requested MA PDU session release procedure and a network-requested MA PDU session release procedure is proposed. If the Access type IE is included in the PDU SESSION RELEASE COMMAND message, and the PDU session is an MA PDU session and having user-plane resources established on the access different from the access indicated in the Access type IE in the PDU SESSION RELEASE COMMAND message, then the UE proceeds with both the UE-requested PDU session release procedure and network-requested PDU session release procedure. Otherwise, the UE aborts the UE-requested PDU session release procedure and stops the timer T3582 and proceeds with the network-requested PDU session release procedure.