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 transmitting method, a handover method, an apparatus, a user equipment, a radio access node, and a system are disclosed. The data transmitting method includes: receiving from a UE a request to apply for accessing a data file in an external server; if a first part of content of the data file is stored an RAN cache, transmitting the first part of the content to the UE; when the first part of the content is transmitted to the UE, obtaining a rest second part of the content of the data file from the external server; and after all the first part of the content is transmitted to the UE, continuing to transmit the second part of the content to the UE. The present invention solves the technical problem that data transmission cannot be effectively accelerated due to the cost for adding storage devices that store videos on RAN nodes and the limited device space, and therefore improves user experience. The present invention also solves the problem that a video cannot be normally played when a UE modes to another RAN node, and therefore improves user experience.