CPC H04W 8/24 (2013.01) [H04W 64/00 (2013.01)] | 20 Claims |
1. A transmission method comprising:
obtaining, by a session management device, capability information indicating whether a transport network supports redundant transmission at a transport layer;
selecting, by the session management device, a user plane device in the transport network based on the capability information; and
managing, by the session management device, a user plane connection of a terminal based on the capability information, wherein the user plane connection is between an access device and the user plane device, wherein the user plane connection is usable for transmitting a service flow packet of the terminal, wherein the access device and the user plane device support a General Packet Radio Service (GPRS) Tunneling Protocol (GTP)-User Plane (GTP-U) protocol, and wherein managing the user plane connection comprises establishing one N3 GTP-U tunnel serving as the user plane connection between the access device and the user plane device when the capability information indicates that the transport network supports the redundant transmission at the transport layer.
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