A method for the transmission of data from a data transmitter to a server by means of a cellular network using frequency sub-bands. A modem selects at least one sub-band from among the frequency sub-bands of the frequency plane, the transmitter obtains at least one frequency sub-band selected, the transmitter obtains information representing the quality of service of the connection between the transmitter and the server, the transmitter checks whether the information representing the quality is superior to or equal to a predetermined quality level, the transmitter notifies the modem of a prohibition of selection of at least one previously selected frequency sub-band if the information representing the quality of service of the connection between the transmitter and the server is inferior to the predetermined quality level.

The present disclosure relates to a communication technique that combines IoT technology with a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than a 4th generation (4G) communication system such as long term evolution (LTE), and to a system therefor. The present disclosure may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. According to various embodiments of the present invention, a method and apparatus for controlling an access of a terminal in a wireless communication system that provides a private network slice may be provided.

The present disclosure relates to a communication technique that combines IoT technology with a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than a 4th generation (4G) communication system such as long term evolution (LTE), and to a system therefor. The present disclosure may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail businesses, security and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. According to various embodiments of the present invention, a method and apparatus for controlling an access of a terminal in a wireless communication system that provides a private network slice may be provided.

Embodiments of this application provide an access point (AP) multi-link device discovery method and a related apparatus, for example, in a wireless local area network (WLAN) supporting IEEE 802. 1 1be. In an example method, a reporting AP sends a first management frame to a station. The first management frame carries information about a reported AP. The reporting AP is affiliated with an AP multi-link device. The reported AP is affiliated with the same multi-link device as the reporting AP. Or the reported AP belongs to a same multiple basic service set identifier (BSSID) set as another AP in the multi-link device with which the reporting AP is affiliated.

Embodiments of this application provide an access point (AP) multi-link device discovery method and a related apparatus, for example, in a wireless local area network (WLAN) supporting IEEE 802. 1 1be. In an example method, a reporting AP sends a first management frame to a station. The first management frame carries information about a reported AP. The reporting AP is affiliated with an AP multi-link device. The reported AP is affiliated with the same multi-link device as the reporting AP. Or the reported AP belongs to a same multiple basic service set identifier (BSSID) set as another AP in the multi-link device with which the reporting AP is affiliated.

This application discloses a communication method and apparatus. A first AMF device receives a first request message, where the first request message includes an identifier of a first network slice that a terminal requests to access and an identifier of a tracking area in which the terminal is located. When the first AMF device determines that the tracking area supports the first network slice, the first AMF device sends a response message, where the response message includes a first radio access selection priority index corresponding to the first network slice. The first radio access selection priority index is for selection of an access network device that supports the first network slice at the terminal. Even if an access network device currently accessed by the terminal does not support the first network slice, the terminal may re-access the access network device that supports the first network slice.

A communication apparatus determines a serving cell that can perform information synchronization with a to-be-activated SCell, where the serving cell is an activated cell or a known cell. The communication apparatus determines a first SSB in SSBs sent by the to-be-activated SCell, where the first SSB corresponds to a second SSB sent by the serving cell. The communication apparatus activates the to-be-activated SCell based on the first SSB sent by the to-be-activated SCell and timing information and beam information of the second SSB.

A communication apparatus determines a serving cell that can perform information synchronization with a to-be-activated SCell, where the serving cell is an activated cell or a known cell. The communication apparatus determines a first SSB in SSBs sent by the to-be-activated SCell, where the first SSB corresponds to a second SSB sent by the serving cell. The communication apparatus activates the to-be-activated SCell based on the first SSB sent by the to-be-activated SCell and timing information and beam information of the second SSB.

Improved network configuration options enable reduced capability (Redcap) devices to coexist with legacy devices. A master information block (MIB) cellBarred indication received in a Synchronization System Block (SSB) by a Redcap device may be ignored by the Redcap device, which may read a System Information Block1 (SIB1) to determine whether to connect to the cell defined by the received SSB. The Redcap device may consider the cell barred if the SIB1 includes a cellBarred indication targeting Redcap devices. The Redcap device may alternately search for an alternative SSB indicated by the SIB1 to determine whether to connect to the cell defined by the alternative SSB. A network node may broadcast Redcap specific and legacy specific SSBs at the same frequency location in a time-multiplexed manner, with each type of device determining cell access based on the received specific SSB. The network node may transmit SSB bursts specifically targeting Redcap devices.

Improved network configuration options enable reduced capability (Redcap) devices to coexist with legacy devices. A master information block (MIB) cellBarred indication received in a Synchronization System Block (SSB) by a Redcap device may be ignored by the Redcap device, which may read a System Information Block1 (SIB1) to determine whether to connect to the cell defined by the received SSB. The Redcap device may consider the cell barred if the SIB1 includes a cellBarred indication targeting Redcap devices. The Redcap device may alternately search for an alternative SSB indicated by the SIB1 to determine whether to connect to the cell defined by the alternative SSB. A network node may broadcast Redcap specific and legacy specific SSBs at the same frequency location in a time-multiplexed manner, with each type of device determining cell access based on the received specific SSB. The network node may transmit SSB bursts specifically targeting Redcap devices.