Data delivery device and method for delivering data

• US 20050249175A1
• Filed: 04/26/2005
• Published: 11/10/2005
• Est. Priority Date: 04/27/2004
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Nasu, Kazunori, Takeichi, Masato
• Granted Patent: US 7,600,034 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: H04L 67/52 specially adapted for the location of the user terminal
• CPC Class Codes: H04L 67/62 Establishing a time schedule for servicing the requests
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/029 Location-based management or tracking services

Abstract

A data delivery device comprising: storage means for storing data, receiving means for receiving, from a client terminal a request to download data to be stored into the storage means and information indicative of a present position of the client terminal, through the network; judging means for judging, in response to the download request received by the receiving means, whether data to be stored into the storage means is to be transmitted to the client terminal or to another predetermined terminal on the basis of a present position of the client terminal; and delivery means for delivering the data to a terminal destination based on the result of judgment through the judging means.

Claims

1. A data delivery device comprising:

storage means for storing data;

receiving means for receiving, from a client terminal, a request to download data to be stored into the storage means and information indicative of a present position of the client terminal, through the network;

judging means for judging, in response to the download request received by the receiving means, whether data to be stored into the storage means is to be transmitted to the client terminal or to another predetermined terminal on the basis of a present position of the client terminal; and

delivery means for delivering the data to a terminal destination based on the result of judgment through the judging means.

2. The data delivery device according to claim 1, wherein the judging means includes:

comparing means for comparing a data delivering time continued till completion of delivering the data to be delivered to the client terminal with a movement time taken for the client terminal to move and arrive at another predetermined terminal, and

determining means for determining that the data is delivered to the another predetermined terminal being different from the client terminal when the comparing means judges that the data delivering time is longer than the movement time, and that the data is delivered to the client terminal when the comparing means judges that the data delivering time is shorter than the movement time.

3. The data delivery device according to claim 2, further comprising network status managing means for statistically managing a congestion status in a transmission channel every time zone, the comparing means comparing the moving time with a delivery time set up in consideration of a delay time, which is obtained in a manner that a delay time based on the congestion status in the transmission channel under management of the network status managing means is added to the delivery time.

4. The data delivery device according to claim 1, wherein the judging means includes:

comparing means for comparing a first delivery time continued till completion of delivering the data to be delivered to the client terminal with the longer of a movement time till the client terminal moves to another predetermined terminal and a second delivery time continued till completion of delivering data to the predetermined terminal, and

determining means for delivering data to the predetermined terminal when the comparing means judges that the first delivery time is longer than the longer of the movement time and the second delivery time, and for delivering data to the client terminal when the comparing means judges that the first delivery time is shorter than the longer of the movement time and the second delivery time.

5. The data delivery device according to claim 4, further comprising a network status managing means for statistically managing a congestion status in a transmission channel every time zone, the comparing means for comparing the movement time with a delivery time which is set up in consideration of first delay times obtained by adding a delay time based on a congestion status in the transmission channel under management of the network status managing means to the first and second delivery times.

6. A method for delivering data, the method comprising the steps of:

receiving a data download request from the client terminal through a network;

judging, in response to the received download request, as to whether the received data is to be transmitted to the client terminal or another predetermined terminal on the basis of a present position of the client terminal; and

delivering the data to the terminal based on the judgment result.