公开(公告)号：EP4325799A1

公开(公告)日：2024-02-21

申请号：EP23191248.6

申请日：2023-08-14

申请人： Huawei Technologies Co., Ltd.

发明人： HUANG, Shigeng ,  WANG, Yanjun ,  ZHONG, Mingming ,  XUE, Wei ,  HU, Yongjian ,  ZHANG, Wenfeng

IPC分类号： H04L45/00 ,  H04L45/28

摘要： Embodiments of this application disclose a data transmission method, a communication system, and a route advertisement method, to improve data transmission stability when a core network device performs a service. The method includes: An access node sends first traffic to a first core network device in a core network through a first service plane of a bearer network. The access node sends second traffic to a second core network device in the core network through a second service plane of the bearer network. The first service plane and second service plane are independent all-active service planes in the bearer network. Service data sent by the base station is split on the access node, and split data each corresponds to one transmission path, so that the first core network device and the second core network device independently perform data transmission with the access node. Even if one transmission path is completely interrupted, the service data may still be transmitted by another core network device through the other transmission path. This greatly improves network reliability.