DATA TRANSMISSION METHOD SWITCHING METHOD DATA TRANSMISSION APPARATUS SWITCHING APPARATUS USER EQUIPMENT WIRELESS ACCESS NODE DATA TRANSMISSION SYSTEM AND SWITCHING SYSTEM

摘要

A data transmission method a switching method a data transmission apparatus a switching apparatus a user equipment a wireless access node a data transmission system and a switching system. The data transmission method comprises: receiving a request from a UE for requesting to access a data file on an external server; if a first part of content in the data file is stored in an RAN Cache transmitting the first part of content to the UE; when transmitting the first part of content to the UE obtaining a remaining second part of content in the data file from the external server; after the first part of content is transmitted to the UE continuing to transmit the second part of content to the UE. The present invention solves a technical problem in prior art that data transmission cannot be efficiently speeded up due to cost and device space limitations for adding a storage device for storing a video on an RAN node and improves user experience. The technical problem in prior art that a video cannot be played properly when the UE moves to another RAN node is also solved improving the user experience.