Method and device for switching

• Main Authors: ZONG ZAIFENG, ZHU FENQIN
• Format: Patent
• Language: Chinese; English
• Published: 08.06.2021
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; WIRELESS COMMUNICATIONS NETWORKS

The invention provides a method and a device for switching. The method comprises the steps that a first control plane function network element determines at least one bearer which needs to be established when a protocol data unit PDU session of a terminal in a first network is switched to a packet data network PDN connection in a second network; and the first control plane function network element acquires tunnel information of the PDN connection, wherein the tunnel information of the PDN connection comprises user plane tunnel information corresponding to each bearer in the at least one bearer. According to the method and the device for switching provided by the invention, data loss in a network switching process can be avoided, so that normal transmission of the data is ensured. 本申请提供了一种用于切换的方法和装置，该方法包括：第一控制面功能网元确定终端在第一网络中的协议数据单元PDU会话切换至第二网络中的分组数据网络PDN连接时需要建立的至少一个承载；所述第一控制面功能网元获取所述PDN连接的隧道信息，所述PDN连接的隧道信息包括所述至少一个承载中每个承载对应的用户面隧道信息。本申请提供的用于切换的方法和装置，能够避免网络切换过程中丢失数据，从而保证数据的正常传输。