Transmission method and network device
摘要
說明書
S252. The first system sends a fifth message to the first network node, where the fifth message is used to indicate to the first network node that the RRC connection of the terminal device is successfully resumed. Optionally, the fifth message includes a signaling radio bearer list and/or a data radio bearer list of the terminal device.
Alternatively, the fifth message is used to indicate to the first network node that the RRC connection of the terminal device fails to be resumed. Optionally, the fifth message is used to instruct the first network node to delete or suspend context information of the terminal device.
Specifically, after finding the context information of the terminal device that is stored at the first system, the first system sends the fifth message to the first network node, where the fifth message is used to instruct the first network node to re-establish the context information of the terminal device, and the fifth message includes the signaling radio bearer list and/or the data radio bearer list of the terminal device; and after receiving the fifth message, the first network node may re-establish the context information of the terminal device based on at least one of the identification information of the terminal device, the signaling radio bearer list of the terminal device, and the data radio bearer list of the terminal device.
For example, after the CU receives the F1 interface message, if the RRC connection of the terminal device can be successfully resumed, the CU sends an F1 interface control plane message to the DU, to instruct the DU to resume a context for the terminal device, configure SRB and DRB protocol stacks, and establish control plane and user plane transmission channels of an F1 interface connection.
