METHOD AND DEVICE FOR RLF PROCESSING AND COMMUNICATION DEVICE Russian patent published in 2022 - IPC H04W76/00 

FIELD: mobile communication.

SUBSTANCE: secondary node receives the first message from a terminal operating in a double connection mode, while the first message is used for indication of that a radio link failure (hereinafter – RLF) occurs in the main node. The secondary node sends the first message to the main node to allow the main node to determine a target main node for service transmission, initiate a process of preparation of service transmission to the target main node, and, after reception of a message of confirmation of service transmission preparation from the target main node, send a service transmission command to the secondary node. The secondary node sends the service transmission command to the terminal to actuate the terminal for service transmission. At the same time, the first message is sent from the secondary node to the main node in the form of a container by means of Xn interface; or the first message is sent from the secondary node to the main node with the content of the first message transferred in Xn message.

EFFECT: possibility of processing of RLF without interruption of UE service data.

18 cl, 11 dwg