Apparatuses, methods, and systems are disclosed for indicating a packet data unit session as unavailable. One apparatus includes a processor that determines that at least one packet data unit session is unavailable. The apparatus includes a transmitter that transmits information indicating that the at least one packet data unit session is to be released.

A method includes receiving cell reselection information from a radio access network device. The cell reselection information includes an identifier of at least one carrier frequency, an identifier of a network slice supported by each of the at least one carrier frequency, and priority information corresponding to the identifier of the network slice that is information of a specific service type of the network slice or a network slice set identifier corresponding to the network slice. The method further includes in response to the terminal device performing cell reselection, selecting a cell on a carrier frequency of the network slice supported by the terminal device as a reselected to-be-camped cell based on the identifier of the at least one carrier frequency, the identifier of the network slice supported by each of the at least one carrier frequency, and priority information corresponding to the identifier of the network slice.

Methods and apparatuses are disclosed for updating a wait timer as a result of receiving one of a release message and a suspend message and/or configuring a wireless device (WD) to update a wait timer by determining the one of the release message and the suspend message to be communicated to the WD.

Embodiments of the present disclosure relate to methods, devices and computer readable media for communications. A method for communications implemented by a terminal device comprises in response to receiving, at a terminal device from a network device, a message indicating that the terminal device is to enter an inactive state, entering the inactive state. The message comprises a resource configuration for data transmission between the terminal device and the network device. The method further comprises performing the data transmission based on the resource configuration.

Embodiments of the present disclosure relate to methods, devices and computer readable media for communications. A method for communications implemented by a terminal device comprises in response to receiving, at a terminal device from a network device, a message indicating that the terminal device is to enter an inactive state, entering the inactive state. The message comprises a resource configuration for data transmission between the terminal device and the network device. The method further comprises performing the data transmission based on the resource configuration.

The present disclosure relates to relay communication based on a sidelink in a wireless communication system, and a method for operating a first terminal may include performing direct communication with a second terminal based on a sidelink, when a path between the first terminal and the second terminal is predicted to be blocked and another relay device providing a relay service is discovered, transmitting, to the relay device, a first message for requesting the relay service for the first terminal and the second terminal, receiving, from the relay device, a second message for accepting the request for the relay service, and performing relay communication with the second terminal, and the first message may include information on the second terminal.

A base station central unit receives, from a base station distributed unit, assistance information indicating whether subsequent data is expected for a small data transmission (SDT) procedure of a wireless device. The base station central unit transmits a radio resource control (RRC) release message to the wireless device based on the assistance information.

A base station central unit receives, from a base station distributed unit, assistance information indicating whether subsequent data is expected for a small data transmission (SDT) procedure of a wireless device. The base station central unit transmits a radio resource control (RRC) release message to the wireless device based on the assistance information.

A carrier configuration method. The method includes: a network device sends measurement configuration information to a terminal device, where the measurement configuration information includes configuration information of an event A1, and the measurement configuration information indicates the terminal device to perform measurement for the event A1 in a radio resource control (RRC) non-connected state.

A carrier configuration method. The method includes: a network device sends measurement configuration information to a terminal device, where the measurement configuration information includes configuration information of an event A1, and the measurement configuration information indicates the terminal device to perform measurement for the event A1 in a radio resource control (RRC) non-connected state.