METHOD FOR GENERATING GROUP OF CONTENT CACHE AND METHOD FOR PROVIDING CONTENT

• US 20160112535A1
• Filed: 03/26/2015
• Published: 04/21/2016
• Est. Priority Date: 10/20/2014
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: SUNG, Kisoon
• Application Number:
  US14/669,987
• Publication Number:
  US 20160112535A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 67/2885 Hierarchically arranged intermediate devices, e.g. for hierarchical caching
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching

Abstract

A method for forming a content cache group is provided, including: searching for a master content cache of a content cache group; and when a response is received from the master content cache, transmitting a content list regarding content stored in a mobile content cache to the master content cache, and a method for providing content shared by a content cache group to a terminal.

Claims

1. A method for forming a content cache group of a mobile content cache, the method comprising:

searching for a master content cache of the content cache group; and

when a response is received from the master content cache, transmitting a content list regarding content stored in the mobile content cache to the master content cache.

2. The method of claim 1, further comprising, when a response is not received from the master content cache, operating as a first master content cache of a content cache group other than the content cache group.

3. The method of claim 1, further comprising after the transmitting, transmitting a separation message to the master content cache and withdrawing from the content cache group.

4. The method of claim 1, further comprising, after the transmitting, periodically receiving a confirmation signal from the master content cache and responding to the confirmation signal.

5. The method of claim 1, further comprising:

after the transmitting,

receiving a separation message from the master content cache; and

negotiating with other mobile content caches included in the content cache group to determine a next master content cache.

6. The method of claim 4, further comprising:

when at least two confirmation signals are received, informing the master content cache that at least one different master content cache is present nearby; and

receiving a confirmation signal transmitted from a next master content cache determined among the master content cache and the at least one different master content cache.

7. A method for forming a mobile content cache group, the method comprising:

receiving a search message from a first mobile content cache which joins the content cache group;

transmitting a response message with respect to the search message, to the first mobile content cache; and

receiving a content list regarding content stored in the first mobile content cache from the first mobile content cache.

8. The method of claim 7 further comprising:

periodically transmitting a confirmation signal to at least one slave content cache included in the content cache group;

receiving a response signal with respect to the confirmation signal from the at least one slave content cache; and

when there is a first slave content cache which has not transmitted a response signal, among the at least one slave content cache, deleting information regarding the first slave content cache.

9. The method of claim 8, wherein the deleting includes deleting a content list of content stored in the first slave content cache.

10. The method of claim 7, further comprising:

receiving a separation message from a second slave content cache among the at least one slave content cache included in the content cache group; and

deleting information regarding the second slave content cache.

11. The method of claim 10, wherein the deleting includes deleting a content list of content stored in the second slave content cache.

12. The method of claim 7, further comprising:

transmitting a separation message to a slave content cache included in the content cache group; and

withdrawing from the content cache group.

13. The method of claim 8, wherein, when a message indicating that at least one different master content cache is present nearby from a slave content cache which has received the confirmation signal is received, determining a next master content cache among the at least one master content cache and the mobile content cache.

14. The method of claim 13, wherein the determining includes:

comparing content lists stored in the at least one master content cache; and

determining a content cache having a larger number of content items on the content list, as a next master content cache.

15. The method of claim 14, wherein the determining includes:

comparing the number of slave content caches connected to the at least one master content cache and the number of slave content caches connected to the mobile content cache; and

determining a content cache having a larger number of slave content caches, as a next master content cache.

16. A method for providing content from a mobile content cache to a terminal, the method comprising:

receiving a content providing request from the terminal;

searching whether the content is present in a first repository of the mobile content cache;

when the content is present in the first repository, providing the content to the terminal; and

when the content is not present in the first repository, delivering the content providing request to a master content cache of a content cache group to which the mobile content cache belongs.

17. The method of claim 16, further comprising:

when the content is present on the content list of the master content cache, receiving information regarding a first mobile content cache storing the content, among other mobile content caches included in the content cache group; and

requesting the content from the first mobile content cache, receiving the content from the first mobile content cache, and transmitting the received content to the terminal.

18. The method of claim 17, further comprising:

when the content is not present on the content list of the master content cache, requesting the content from a content server; and

receiving the content from the content server and transmitting the received content to the terminal.