Provided are a data transmission method performed by a base station in a wireless communication system, and an apparatus using the method. The base station transmits a message requesting information for data transmission to a second base station and receives, from the second base station, a response message to the message requesting the information for data transmission, wherein the information for data transmission is to transmit data on a terminal in a light connection state.

Provided are a data transmission method performed by a base station in a wireless communication system, and an apparatus using the method. The base station transmits a message requesting information for data transmission to a second base station and receives, from the second base station, a response message to the message requesting the information for data transmission, wherein the information for data transmission is to transmit data on a terminal in a light connection state.

A communication terminal (10) according to the present disclosure includes: a control unit (12) configured to, in a case of a movement from a communication area formed by the 5GS to a communication area formed by the EPS or a movement from a communication area formed by the EPS to a communication area formed by the 5GS, determine whether or not a communication system forming a communication area at a movement destination can satisfy requirements of services; and a communication unit (11) configured to, when it is determined that the communication system forming the communication area at the movement destination can satisfy the requirements of the services, send a connection request message to the communication system forming the communication area at the movement destination.

An information transmission method includes transmitting, by the terminal, a first uplink channel or signal, where the first uplink channel or signal has an association relation with a target channel or signal; and performing, by the terminal, an action for the target channel or signal according to the association relation.

Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for a primary secondary cell (PSCell) change failure. In example embodiments, a master network device receives, from a source secondary network device, a first request for a change of a terminal device from the source secondary network device to a target secondary network device. The master network device receives, from the source secondary network device, an identification of a source PSCell operated by the source secondary network device and serving the terminal device prior to the first request. The master network device further receives, from the terminal device, an indication of a radio link failure of the terminal device in a PSCell and transmits the indication of the radio link failure to the source secondary network device along with the identification of the source PSCell.

Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for a primary secondary cell (PSCell) change failure. In example embodiments, a master network device receives, from a source secondary network device, a first request for a change of a terminal device from the source secondary network device to a target secondary network device. The master network device receives, from the source secondary network device, an identification of a source PSCell operated by the source secondary network device and serving the terminal device prior to the first request. The master network device further receives, from the terminal device, an indication of a radio link failure of the terminal device in a PSCell and transmits the indication of the radio link failure to the source secondary network device along with the identification of the source PSCell.

A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes generating a report, and transmitting the report to an access node in the wireless communication system, wherein the report is generated in or after an Internet Protocol (IP) Multimedia Subsystem (IMS) voice related process of the UE.

A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes generating a report, and transmitting the report to an access node in the wireless communication system, wherein the report is generated in or after an Internet Protocol (IP) Multimedia Subsystem (IMS) voice related process of the UE.

A first wireless base station provides a communication device access to a remote network over a wireless communication link. The wireless communication link provides poor connectivity between the mobile communication device and the first wireless base station. The first wireless base station receives a notification indicating that the communication device is within wireless range of at least a second wireless base station. To initiate a handoff of the communication device from the first wireless base station to the second wireless base station, the first wireless base station transmits a wireless signal encoded to indicate that the wireless signal was transmitted from the second wireless base station. Communication of the wireless signal causes the communication device to perceive that it receives a strong signal from the second wireless base station, prompting the communication device to perform a handoff from the first wireless base station to the second wireless base station.

A first wireless base station provides a communication device access to a remote network over a wireless communication link. The wireless communication link provides poor connectivity between the mobile communication device and the first wireless base station. The first wireless base station receives a notification indicating that the communication device is within wireless range of at least a second wireless base station. To initiate a handoff of the communication device from the first wireless base station to the second wireless base station, the first wireless base station transmits a wireless signal encoded to indicate that the wireless signal was transmitted from the second wireless base station. Communication of the wireless signal causes the communication device to perceive that it receives a strong signal from the second wireless base station, prompting the communication device to perform a handoff from the first wireless base station to the second wireless base station.