Data transmission method and system

Abstract

Disclosed are a data transmission method and system. One or more pre-setup first bearers are disposed between a first network device and a base station. One or more pre-setup second bearers are disposed between the first network device and a second network device. The transmission method includes the following steps: receiving, by the first network device by using one first bearer, data sent by the base station, where the data is sent by a terminal to the base station by using an air interface resource, and the first bearer used to receive the data is corresponding to a first service attribute of the data; and sending, by the first network device, the data to the second network device by using one second bearer, where the second bearer used to send the data is corresponding to a second service attribute of the data.

Dependencies are inferred from the claim text.