Patent ID: 7222169

Claim:
An information storage method for a mobile communications network in which a mobile terminal receives information through a plurality of delivery channels, wherein in response to a delivery channel through which the information is delivered to the mobile terminal being switched to another as the mobile terminal moves from a communication area to another, a communication node in a delivery channel through which the information has been delivered to the mobile terminal registers a portion of the information which has been stored therein; wherein, if there is a first cache node in which a portion of the information is registered in a delivery channel which is established in response to an information delivery request from a mobile terminal, the first cache node delivers the portion of the cache information to the mobile terminal; and wherein, if a second communication node is included in the delivery channel established in response to an information delivery request, the first communication node informs the second communication node that the first cache node has delivered a portion of the information, and the second communication node delivers a remaining portion of the information except for the portion which has been delivered by the first cache node to the mobile terminal through the delivery channel.