Reverse caching for residential end-users to reduce usage of access links to a core communication network

• US 20030200276A1
• Filed: 04/23/2002
• Published: 10/23/2003
• Est. Priority Date: 04/23/2002
• Status: Active Grant

• Current Assignee: T-Mobile Innovations LLC (Deutsche Telekom AG)
• Original Assignee: Sprint Communications Company LP (Deutsche Telekom AG)
• Inventors: Dispensa, Steve, Sloderbeck, Jason M., Myers, Steve, Spaeth, Jonathon
• Granted Patent: US 7,016,883 B2
• Time in Patent Office: Days
• US Class Current: 709/217
• CPC Class Codes: H04L 67/564 Enhancement of application control based on intercepted application data
• CPC Class Codes: H04L 67/5651 Reducing the amount or size of exchanged application data
• CPC Class Codes: H04L 67/5683 Storage of data provided by user terminals, i.e. reverse caching
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

A reverse caching system monitors residential end-user communications to cache content files when they are transferred from the residential end-users over access links to a core communication network. The reverse caching system monitors the residential end-user communications to identify requests for the content files cached in the reverse caching system. In response to identifying the requests, the reverse caching system transfers the requested content files from the reverse caching system to the core communication network.

Claims

1. A method of operating a reverse caching system wherein residential end-users are coupled to access links, the access links are coupled to the reverse caching system, the reverse caching system is coupled to a core communication network, and the residential end-users host content files for transfer over the access links and the core communication network, the method comprising:

monitoring residential end-user communications to cache transferred ones of the content files in the reverse caching system when the transferred ones of the content files are transferred from the residential end-users over the access links to the core network;

monitoring the residential end-user communications to identify requests for requested ones of the content files cached in the reverse caching system; and

in response to identifying the requests for the requested ones of the content files cached in the reverse caching system, transferring the requested ones of the content files from the reverse caching system to the core communication network.

2. The method of claim 1 wherein monitoring the residential end-user communications to cache the transferred ones of the content files and to identify the requests comprises filtering the residential end-user communications to detect an end-user file sharing protocol.

3. The method of claim 1 wherein monitoring the residential end-user communications to cache the transferred ones of the content files further comprises checking a database to determine that the transferred ones of the content files may be legally cached in the reverse caching system.

4. The method of claim 1 further comprising, in response to identifying the requests for the requested ones of the content files cached in the reverse caching system, inhibiting a transfer over the access links of the requested ones of the content files responsive to the requests.

5. The method of claim 1 further comprising maintaining a data structure associating individual ones of the residential end-users with individual cached ones of the content files.

6. The method of claim 1 wherein the access links comprise wireless links.

7. The method of claim 1 wherein the access links comprise coaxial cables.

8. The method of claim 1 wherein the core communication network comprises the Internet.

9. The method of claim 1 wherein the content files comprise audio.

10. The method of claim 1 wherein the content files comprise video.

11. A reverse caching system wherein residential end-users are coupled to access links, the access links are coupled to the reverse caching system, the reverse caching system is coupled to a core communication network, and the residential end-users host content files for transfer over the access links and the core communication network, the reverse caching system comprising:

a cache configured to store the content files; and

a filter configured to monitor residential end-user communications to store transferred ones of the content files in the cache when the transferred ones of the content files are transferred from the residential end-users over the access links to the core network, monitor the residential end-user communications to identify requests for requested ones of the content files in the cache, and in response to identifying the requests for the requested ones of the content files in the cache, transfer the requested ones of the content files from the cache to the core communication network.

12. The reverse caching system of claim 11 wherein the filter is configured to filter the residential end-user communications to detect an end-user file sharing protocol.

13. The reverse caching system of claim 11 wherein the filter is configured to check a database to determine that the transferred ones of the content files may be legally stored in the cache.

14. The reverse caching system of claim 11 wherein the filter is configured, in response to identifying the requests for the requested ones of the content files in the cache, to inhibit a transfer over the access links of the requested ones of the content files responsive to the requests.

15. The reverse caching system of claim 11 wherein the filter is configured to maintain a data structure associating individual ones of the residential end-users with individual cached ones of the content files.

16. The reverse caching system of claim 11 wherein the access links comprise wireless links.

17. The reverse caching system of claim 11 wherein the access links comprise coaxial cables.

18. The reverse caching system of claim 11 wherein the core communication network comprises the Internet.

19. The reverse caching system of claim 11 wherein the content files comprise audio.

20. The reverse caching system of claim 11 wherein the content files comprise video.

21. A software product for a reverse caching system wherein residential end-users are coupled to access links, the access links are coupled to the reverse caching system, the reverse caching system is coupled to a core communication network, and the residential end-users host content files for transfer over the access links and the core communication network, the software product comprising:

control software configured to direct the reverse caching system to monitor residential end-user communications to store transferred ones of the content files in cache when the transferred ones of the content files are transferred from the residential end-users over the access links to the core network, monitor the residential end-user communications to identify requests for requested ones of the content files in the cache, and in response to identifying the requests for the requested ones of the content files in the cache, transfer the requested ones of the content files from the cache to the core communication network; and

a storage system configured to store the control software.

22. The software product of claim 21 wherein the control software is configured to direct the reverse caching system to filter the residential end-user communications to detect an end-user file sharing protocol.

23. The software product of claim 21 wherein the control software is configured to direct the reverse caching system to check a database to determine that the transferred ones of the content files may be legally stored in the cache.

24. The software product of claim 21 wherein the control software is configured to direct the reverse caching system, in response to identifying the requests for the requested ones of the content files in the cache, to inhibit a transfer over the access links of the requested ones of the content files responsive to the requests.

25. The software product of claim 21 wherein the control software is configured to direct the reverse caching system to maintain a data structure associating individual ones of the residential end-users with individual cached ones of the content files.

26. The software product of claim 21 wherein the access links comprise wireless links.

27. The software product of claim 21 wherein the access links comprise coaxial cables.

28. The software product of claim 21 wherein the core communication network comprises the Internet.

29. The software product of claim 21 wherein the content files comprise audio.

30. The software product of claim 21 wherein the content files comprise video.