System and method for managing an exchange between a gateway server and a client-side module

• US 20030069926A1
• Filed: 10/09/2001
• Published: 04/10/2003
• Est. Priority Date: 10/09/2001
• Status: Abandoned Application

• Current Assignee: WildBlue Communications, Inc. (ViaSat Incorporated)
• Original Assignee: WildBlue Communications, Inc. (ViaSat Incorporated)
• Inventors: Weaver, Jeffrey Charles, Moore, Thomas Evans, Sundelin, Andrew Wilson
• Application Number:
  US09/974,665
• Publication Number:
  US 20030069926A1
• Time in Patent Office: Days
• US Class Current: 709/203
• CPC Class Codes: G06F 16/9574 of access to content, e.g. by caching

Abstract

A system and method for reducing the impact of high latency links for interactive applications is described. In one embodiment, a list identifying locally stored data, which correspond to a data page, is received. Additionally, an index page corresponding to the data page is received. This index page can include a list of data objects included in the web page. Next, a determination is made as to which data objects included in the index page are subject to a prefetch, and a corresponding prefetch request is generated.

Claims

1. A method for managing a data transmission, the method comprising:

receiving, at a gateway PEP, a fetch request for a web page;

receiving, at the gateway PEP, a list of locally available data objects, wherein the list of locally available data objects corresponds to the web page;

passing the fetch request to a gateway server;

receiving, at the gateway PEP, an index page corresponding to the web page, wherein the index page comprises a list of data objects included in the web page;

comparing the list of locally available data objects with the list of data objects identified in the index page to determine which data objects included in the index page are subject to prefetch; and

generating, at the gateway PEP, a prefetch request corresponding to the data objects determined to be subject to prefetch.

2. The method of claim 1, further comprising:

receiving a timestamp associated with a first of the identified locally available data objects.

3. The method of claim 2, further comprising:

comparing the timestamp to a threshold time limit to determine whether the first of the locally available data objects is valid;

wherein the first of the identified locally available data objects is subject to prefetch if the timestamp indicates that the first of the identified locally stored data objects is older than the threshold time limit.

4. The method of claim 1, wherein receiving the list of locally available data objects comprises:

receiving the list of locally available data objects from a gateway-side storage device.

5. The method of claim 1, wherein receiving the list of locally available data objects comprises:

receiving the list from a client-side storage device.

6. The method of claim 1, wherein the locally available data objects are stored locally relative to the gateway PEP.

7. The method of claim 1, wherein the locally available data objects are stored locally relative to a browser.

8. The method of claim 1, further comprising:

receiving data objects corresponding to the prefetch request; and

passing the received data objects to a client.

9. The method of claim 1, further comprising:

passing the generated prefetch requests to the gateway PEP.

10. A method for managing a data transmission, the method comprising:

receiving a list identifying locally stored data objects, wherein the identified locally stored data objects correspond to a data page;

receiving an index page corresponding to the data page, wherein the index page comprises a list of data objects included in the web page;

determining which data objects included in the index page are subject to a prefetch, wherein the determination is based upon the received list and the received index page; and

generating a prefetch request corresponding to the data objects determined to be subject to the prefetch.

11. The method of claim 10, further comprising:

receiving a timestamp associated with a first of the identified locally stored data objects.

12. The method of claim 11, further comprising:

comparing the timestamp to a threshold time limit to determine whether the first of the identified locally stored data objects is valid.

13. The method of claim 10, further comprising:

receiving data objects corresponding to the prefetch request; and

passing the received data objects to a client-side device.

14. A system for managing a data transmission, the system comprising:

at least a first processor device;

at least a first memory device coupled to the at least a first processor device;

a plurality of instructions stored on the at least a first memory device, the plurality of instructions configured to cause the at least a first processor to;

process a list identifying locally stored data objects, wherein the identified locally stored data objects correspond to a data page;

process an index page corresponding to the data page, wherein the index page comprises a list of data objects included in the web page;

determine which data objects included in the index page are subject to prefetch, wherein the determination is based upon the received list and the received index page; and

generate a prefetch request corresponding to the data objects determined to be subject to prefetch.

15. The system of claim 14, wherein the plurality of instructions are further configured to cause the at least a first processor to:

process a timestamp associated with at least a first of the identified locally stored data objects.

16. The system of claim 14, wherein the plurality of instructions are further configured to cause the at least a first processor to:

compare the timestamp to a threshold time limit to determine whether the at least a first of the identified locally stored data objects is valid.

17. The system of claim 16, wherein the plurality of instructions are further configured to cause the at least a first processor to:

receive data objects corresponding to the prefetch request; and

pass the received data objects to a client-side device.

18. A method for providing data from a gateway server to a client-side module, the method comprising:

receiving, at a gateway performance enhancing proxy (PEP), a request for a data page;

providing the received request to a gateway server;

receiving, at the gateway PEP, an index page identifying at least a first data object included in the data page;

providing the index page to the client-side module;

generating a list of data objects subject to a prefetch, wherein the list of data objects includes an indication of the at least a first data object;

providing the list of data objects to the client-side module;

providing a fetch request to the gateway server, the fetch request corresponding to the at least a first data object;

responsive to providing the fetch request to the gateway server, receiving the first data object from the gateway server; and

providing the first data object to the client-side module.

19. The method of claim 18, wherein receiving a request for a data page comprises:

receiving a request for a web page.

20. The method of claim 18, wherein providing the list of data object comprises:

multicasting the list of data objects to at least the client-side module.

21. The method of claim 18, further comprising:

generating the fetch request at the gateway PEP.

22. The method of claim 18, wherein providing the first data object to the browser comprises:

providing the first data object to the browser via a satellite network.

23. A method for providing data from a gateway server to a client-side module, the method comprising:

receiving an index page indicating at least a first data object included in a data page;

providing the index page to the client-side module;

generating a list of data objects subject to a prefetch, wherein the list of data objects includes the at least a first data object;

providing a fetch request to the gateway server, the fetch request corresponding to the list of data objects subject to prefetch;

responsive to providing the fetch request to the gateway server, receiving the first data object from the gateway server; and

providing the first data object to the client-side module.

24. The method of claim 23, wherein generating the list of data objects subject to the prefetch comprises:

parsing the index page.

25. The method of claim 23, further comprising:

generating the fetch request at a gateway PEP.

26. The method of claim 23, wherein providing the first data object to the client-side module comprises:

providing the first data object to the client-side module via a satellite network.

27. A system for managing a data transmission, the system comprising:

a child PEP;

a satellite modem coupled to the child PEP;

a satellite modem termination system;

a satellite system coupled to the satellite modem and the satellite modem termination system; and

a parent PEP coupled to the satellite system.

28. The system of claim 27, wherein the child PEP is configured to intercept a data page fetch request generated by a browser and wherein the child PEP is configured to block the data page fetch request, thereby preventing the data page fetch request from being sent over the satellite system from the browser to a gateway server.

29. The system of claim 27, wherein the satellite modem and the child PEP are integrated.

30. The system of claim 27, wherein the parent PEP is configured to generate a list of data objects subject to a prefetch, wherein the list of data objects includes the at least a first data object.

31. The system of claim 30, wherein the parent PEP is configured to provide a fetch request to the gateway server, the fetch request corresponding to the indication the first data object.

32. The system of claim 27, further comprising:

a multipoint distribution system coupled to the child PEP;

wherein a plurality of users are connectable to the mulitpoint distribution system.

33. A system for managing a data transmission between a gateway server and a client-side module, the system comprising:

at least a first processor device;

at least a first memory device coupled to the at least a first processor device; and

a plurality of instructions stored on the at least a first memory device, the plurality of instructions configured to cause the at least a first processor to;

process a request for a data page;

provide the received request to the gateway server;

receive an index page identifying at least a first data object included in the data page;

provide the index page to the client-side module;

generate a list of data objects subject to a prefetch, wherein the list of data objects includes an indication the at least a first data object; and

provide the list of data objects to the client-side module;

provide a prefetch request to the gateway server, the prefetch request corresponding to the at least a first data object;

responsive to providing the prefetch request to the gateway server, process the first data object, wherein the first data object is received from the gateway server; and

provide the first data object to the client-side module.

34. The system of claim 33, wherein the plurality of instructions are configured to cause the at least a first processor to generate the list of data objects subject to the prefetch by:

parsing the index page.

35. The system of claim 33, further comprising:

a multipoint distribution system;

wherein a plurality of users are connectable to the mulitpoint distribution system.

36. A system for providing data from a gateway server to a client-side module, the system comprising:

means for receiving a request for a data page;

means for providing the received request to a gateway server;

means for receiving an index page identifying at least a first data object included in the data page;

means for providing the index page to the client-side module;

means for generating a list of data objects subject to a prefetch, wherein the list of data objects includes an indication of the at least a first data object;

means for providing the list of data objects to the client-side module;

means for providing a fetch request to the gateway server, the fetch request corresponding to the at least a first data object;

means for receiving the first data object from the gateway server; and

means for providing the first data object to the client-side module.