Patent ID: 9736872
Date: 2017-08-15
CPC Classifications: H04L,H04W

Claim:
1. A data transmission method, comprising: receiving, by a first base station, a request message sent by a first device, wherein the request message carries identification information of requested data and identification information of the first device, and wherein the first device comprises a user equipment or a second base station; retrieving, by the first base station, in stored data according to the identification information of the requested data; sending, by the first base station, the matched data to the first device according to the identification information of the first device when matched data is retrieved, wherein the matched data refers to data that matches the identification information of the requested data; when no matched data is retrieved by the first base station and the first base station is not a cluster head, sending, by the first base station, the request message to a packet data network gateway through a mobility management entity such that the packet data network gateway sends the request message to a third base station used as a cluster head, and the third base station determines, according to the identification information of the requested data, a first storage device on which the matched data is stored, and sends identification information of the first storage device to the first base station; receiving, by the first base station, the identification information of the first storage device; sending, by the first base station, the request message to the first storage device according to the identification information of the first storage device such that the first storage device sends, after receiving the request message, the stored matched data that matches the identification information, in the request message, of the requested data to the first base station; receiving, by the first base station, the matched data sent by the first storage device; and sending the matched data to the first device.