Abstract: A communication apparatus configured to communicate with a communication apparatus in a mobile communication system using a machine learning technology includes a controller configured to perform machine learning processing of learning processing to derive a learned model by using learning data and/or inference processing to infer inference result data from inference data by using the learned model, and a transmitter configured to transmit, to the communication apparatus, a message including an information element related to a processing capacity and/or a storage capacity usable by the communication apparatus for the machine learning processing.

Abstract: A slice-specific cell reselection method according to one aspect is a slice-specific cell reselection method for a mobile communication system. The slice-specific cell reselection method includes a step of receiving, at a user equipment, a slice priority indicating a priority per network slice from a base station or an access management apparatus. The slice-specific cell reselection method further includes a step of transmitting, at the base station, a slice priority disregard permission message indicating that disregarding a slice priority is permitted when an available capacity of a radio resource is greater than or equal to a threshold value. The slice-specific cell reselection method further includes a step of performing slice-specific cell reselection using the network slice desired by the user equipment without using a slice priority in response to reception of the slice priority disregard permission message.

Abstract: A communication apparatus configured to communicate with a communication apparatus in a mobile communication system using a machine learning technology, the communication apparatus including the receiver configured to receive, from the communication apparatus, a configuration message including a model and additional information on the model, the model being to be used in machine learning processing of learning processing and/or inference processing, and a controller configured to perform the machine learning processing using the model based on the additional information.

Abstract: A communication control method according to one aspect is a communication control method in a mobile communication system. The communication control method comprises: transmitting, at a network node to a user equipment, configuration information relating to a transmission path through which extended Reality (XR) traffic is transmitted; and transmitting, at the user equipment to the network node, XR assistance information relating to the XR comprising identification information relating to the transmission path on a basis on the configuration information. The configuration information comprises association information between the identification information relating to the transmission path and a session ID of the XR.

Abstract: A slice support checking method according to an aspect is a slice support availability checking method in a mobile communication system. The slice support checking method includes a step of transmitting, at a base station, a message including a first list and/or a second list. Furthermore, the slice support checking method includes a step of determining, at a user equipment, whether a cell supports a network slice in an application area based on the presence or absence of the first list and the second list. Here, the first list represents first network slices that a cell supports, and the second list represents second network slices that the cell does not support.

Abstract: In an aspect, a communication control method is a communication control method in a wireless communication system. The communication control method includes a step of transmitting, by a user equipment, communication profile information indicating a time period when communication with a base station is available to the base station, the user equipment having a power supply that generates power using energy harvesting. The communication control method includes a step of performing, by the base station, the communication with the user equipment based on the communication profile information.

Abstract: In an aspect, a communication control method is a communication control method in a wireless communication system. The communication control method includes a step of transmitting, by a first communication node included in a network, a predetermined message to a second communication node. The communication control method includes a step of transmitting, by the second communication node, tag information read from a wireless tag to the first communication node in response to receiving the predetermined message.

Abstract: In a first aspect, a cell reselection method is performed in a mobile communication system. The cell reselection method includes transmitting, by a base station, mapping information between a first slice group and a second slice group when the second slice group includes at least some of network slices included in the first slice group, the first slice group being available in a region of the base station, and the second slice group being available in a neighboring region adjacent to the region. The cell reselection method includes performing, by a user equipment, slice-specific cell reselection by using the mapping information.

Abstract: In a first aspect, a cell reselection method is performed in a mobile communication system. The cell reselection method includes acquiring, by a user equipment, slice frequency information indicating a correspondence relationship between a network slice, a frequency, and a frequency priority from a network node. The cell reselection method includes measuring, by the user equipment, the frequency. In addition, the cell reselection method includes: excluding, by the user equipment, the frequency in the network slice from a target of slice-specific cell reselection as a result of measuring the frequency, when a highest ranked cell in the frequency does not support the network slice. In addition, the cell reselection method includes performing, by the user equipment, the slice-specific cell reselection.

Abstract: In an aspect, a communication control method is used in a mobile communication system in which communication is performed between a remote user equipment and a base station via a first relay user equipment. The communication control method includes a step of transmitting, by the first relay user equipment, first slice support information to the remote user equipment, the first slice support information including network slices capable of being supported by the first relay user equipment. The communication control method also includes a step of performing, by the remote user equipment, reselection processing of reselecting a relay user equipment supporting a desired network slice that the remote user equipment desires to use, based on the first slice support information.

Abstract: A communication method according to a first aspect is a communication method performed by a user equipment in an RRC idle state or an RRC inactive state, the communication method including the steps of determining a cell reselection threshold value according to an intended network slice of the user equipment, measuring radio quality of a radio signal received by the user equipment from a network, and controlling cell reselection or cell selection according to a result of comparison between the measured radio quality and the cell reselection threshold value.

Abstract: A cell reselection method performed by a user equipment in a mobile communication system includes: receiving, from a network, slice frequency information indicating a correspondence relationship between network slice groups, frequencies, and frequency priorities; determining, for a selected network slice group selected by a user equipment in accordance with a slice group priority, priority orders of corresponding frequencies based on the frequency priorities indicated by the slice frequency information; and reselecting a candidate cell satisfying a predetermined quality standard within a selected frequency selected by the user equipment in accordance with the determined priority orders. The determining of the priority orders includes determining, for each of the frequencies, the priority orders of the corresponding frequencies, based on a maximum value of the frequency priorities for each of a plurality of network slice groups when the plurality of network slice groups have a same slice group priority.

Abstract: In a first aspect, a cell reselection method is performed by a user equipment in a mobile communication system. The cell reselection method includes: receiving, from a network, slice frequency information indicating a plurality of frequencies and a network slice group supported by each of the plurality of frequencies; and when a predetermined frequency not supporting a predetermined network slice group, of which an AS layer is notified by a NAS layer of a user equipment, is present in the slice frequency information, performing control in which a cell belonging to the predetermined frequency is less likely to be selected as a serving cell than a cell belonging to a frequency supporting the predetermined network slice group.

Abstract: In a first aspect, a communication control method is a communication control method in a user equipment. The communication control method includes: transmitting, to a core network apparatus, information indicating a plurality of network slices desired by a user equipment; and receiving, from the core network apparatus, information indicating a priority of each of the plurality of network slices.

Abstract: In an aspect, a communication method is performed in a user equipment in an RRC idle state or an RRC inactive state. The communication method includes: specifying, as a candidate cell for cell reselection, a cell belonging to a frequency supporting a selected network slice group selected in accordance with a priority provided by a NAS layer; and determining whether the candidate cell supports the selected network slice group. The determining includes: receiving a system information block from a serving cell of a user equipment for each of a plurality of network slice groups, the system information block including information indicating an identifier of the network slice group and a cell identifier of a cell that does not support the network slice group; and determining whether the candidate cell supports the selected network slice group, based on the information.

Abstract: In a first aspect, a communication control method is used in a mobile communication system including a user equipment and a base station, and being capable of performing wireless communication between the user equipment and the base station. The communication control method includes receiving, by a first layer of a user equipment in a Radio Resource Control (RRC) idle state or an RRC inactive state, system information from the base station. The communication control method includes notifying, by the first layer of the user equipment, a second layer higher than the first layer of at least one of first information indicating whether slice-specific cell reselection is available and second information indicating whether a slice-specific random access channel is available, based on the system information.

Abstract: In a first aspect, a communication control method is used in a mobile communication system including a user equipment and a base station, and being capable of performing wireless communication between the user equipment and the base station. The communication control method includes performing, by the user equipment, a slice-specific random access channel which is a random access procedure using a resource separated per slice or per slice group. The communication control method includes recording, by the user equipment, first log information in a memory, the first log information being acquired when the slice-specific random access channel is performed. The communication control method further includes transmitting, by the user equipment, the first log information to the base station.

Abstract: A communication control method includes determining, at a base station, a restrictive condition that is a condition for restricting use of a network slice, and transmitting, at the base station, restriction information related to the network slice to a core network apparatus, a certain base station other than the base station, or a user equipment.

Abstract: In a first aspect, a cell reselection method is used in a user equipment in an RRC idle state or an RRC inactive state, the cell reselection method including: specifying a service or a function that the user equipment desires to use; selecting a target in response to an instruction from a network or periodically with, as a candidate, a cell or a frequency having a result of measurement processing, the result satisfying a predetermined condition, the measurement processing being performed on a cell or a frequency different from a current existing cell; and performing cell reselection to the target selected. The selecting of the target includes performing control for selecting, as the target, a cell or a frequency providing the service or the function specified.

Abstract: A user equipment includes a step of receiving network slice restriction information related to a network slice to be provided with a restrictive condition from a base station or a core network apparatus. The restrictive condition is a condition for restricting use of the network slice. The network slice restriction information includes an identifier for identifying the network slice and information indicating the restrictive condition.