SYSTEM AND METHOD OF ESTABLISHING TRANSMISSION CONTROL PROTOCOL CONNECTIONS

• US 20120079060A1
• Filed: 09/28/2010
• Published: 03/29/2012
• Est. Priority Date: 09/28/2010
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Vijayakumar, Rajiv K., Mir, Idreas, Jim, Samson, Bapst, Mark
• Granted Patent: US 8,909,732 B2
• Time in Patent Office: Days
• US Class Current: 709/217
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]

Abstract

A method of establishing transmission control protocol (TCP) connections is disclosed and may include receiving a uniform resource locator (URL) as part of a hyper text transfer protocol (HTTP) request. Further, the method may include searching a host database with the URL and determining whether host data for the URL is available. The method may also include performing a domain name service (DNS) lookup for a URL host and for one or more sub-resource hosts, wherein all DNS lookups are performed in parallel at substantially the same time, when host data for the URL is available.

Claims

1. A method of establishing transmission control protocol (TCP) connections, the method comprising:

receiving a uniform resource locator (URL) as part of a hyper text transfer protocol (HTTP) request;

searching a host database with the URL;

determining whether host data for the URL is available; and

performing a domain name service (DNS) lookup for a URL host and for one or more sub-resource hosts, wherein all DNS lookups are performed in parallel at substantially the same time, when host data for the URL is available.

2. The method of claim 1, further comprising:

establishing at least one TCP connection for the URL host and for each of the one or more sub-resource hosts.

3. The method of claim 2, further comprising:

loading a main resource; and

loading one or more sub-resources.

4. The method of claim 3, further comprising:

updating the host database, when the web page for the URL is fully loaded.

5. The method of claim 3, wherein the method further comprises forecasting remaining objects to be downloaded after an HTML file has been parsed.

6. The method of claim 1, further comprising:

determining whether a transmission control protocol (TCP) connection is open; and

determining whether a host is operating on an HTTP version 1.1 or greater when the TCP connection is open.

7. The method of claim 6, further comprising:

determining whether a throughput (TP) headroom satisfies a TP headroom condition.

8. The method of claim 7, further comprising:

determining whether a TCP retransmission timeout (RTO) satisfies a TCP RTO condition; and

submitting the HTTP request to an existing TCP connection when the TCP RTO does not satisfy the TCP RTO condition.

9. The method of claim 8, further comprising:

opening a new TCP connection when the TCP RTO satisfies the TCP RTO condition; and

determining whether a TCP window utilization satisfies a TCP window utilization condition when the TCP RTO does not satisfy the TCP RTO condition.

10. The method of claim 9, further comprising:

opening a new TCP connection when the TCP window utilization satisfies the TCP window utilization condition; and

submitting the HTTP request to an existing TCP connection when the TCP window utilization does not satisfy the TCP window utilization condition.

11. A device, the device comprising:

means for receiving a uniform resource locator (URL) as part of a hyper text transfer protocol (HTTP) request;

means for searching a host database with the URL;

means for determining whether host data for the URL is available; and

means for performing a domain name service (DNS) lookup for a URL host and for one or more sub-resource hosts, wherein all DNS lookups are performed in parallel at substantially the same time, when host data for the URL is available.

12. The device of claim 11, further comprising:

means for establishing at least one connection for the URL host and for each of the one or more sub-resource hosts.

13. The device of claim 12, further comprising:

means for loading a main resource; and

means for loading one or more sub-resources.

14. The device of claim 13, further comprising means for forecasting remaining objects to be downloaded after an HTML file has been parsed.

15. The device of claim 11, further comprising:

means for updating the host database, when the web page for the URL is fully loaded.

16. The device of claim 11, further comprising:

means for determining whether a transmission control protocol (TCP) connection is open; and

means for determining whether a host is operating on an HTTP version 1.1 or greater when the TCP connection is open.

17. The device of claim 16, further comprising:

means for determining whether a throughput (TP) headroom satisfies a TP headroom condition.

18. The device of claim 17, further comprising:

means for determining whether a TCP retransmission timeout (RTO) satisfies a TCP RTO condition; and

means for submitting the HTTP request to an existing TCP connection when the TCP RTO does not satisfy the TCP RTO condition.

19. The device of claim 18, further comprising:

means for opening a new TCP connection when the TCP RTO satisfies the TCP RTO condition; and

means for determining whether a TCP window utilization satisfies a TCP window utilization condition when the TCP RTO does not satisfy the TCP RTO condition.

20. The device of claim 19, further comprising:

means for opening a new TCP connection when the TCP window utilization satisfies the TCP window utilization condition; and

means for submitting the HTTP request to an existing TCP connection when the TCP window utilization does not satisfy the TCP window utilization condition.

21. A device comprising:

a memory;

a processor accessible to the memory, wherein the processor is operable to;

receive a uniform resource locator (URL) as part of a hyper text transfer protocol (HTTP) request;

search a host database with the URL;

determine whether host data for the URL is available; and

perform a domain name service (DNS) lookup for a URL host and for one or more sub-resource hosts, wherein all DNS lookups are performed in parallel at substantially the same time, when host data for the URL is available.

22. The device of claim 21, wherein the processor is further operable to:

establish a TCP connection for the URL host and for each of the one or more sub-resource hosts.

23. The device of claim 22, wherein the processor is further operable to:

load a main resource; and

load one or more sub-resources.

24. The device of claim 23, wherein the processor is further operable to:

forecast remaining objects to be downloaded after an HTML file has been parsed.

25. The device of claim 23, wherein the processor is further operable to:

update the host database, when the web page for the URL is fully loaded.

26. The device of claim 25, wherein the processor is further operable to:

determine whether a transmission control protocol (TCP) connection is open; and

determine whether a host is operating on an HTTP version 1.1 or greater when the TCP connection is open.

27. The device of claim 26, wherein the processor is further operable to:

determine whether a throughput (TP) headroom satisfies a TP headroom condition.

28. The device of claim 27, wherein the processor is further operable to:

determine whether a TCP retransmission timeout (RTO) satisfies a TCP RTO condition; and

submit the HTTP request to an existing TCP connection when the TCP RTO does not satisfy the TCP RTO condition.

29. The device of claim 28, wherein the processor is further operable to:

open a new TCP connection when the TCP RTO satisfies the TCP RTO condition; and

determine whether a TCP window utilization satisfies a TCP window utilization condition when the TCP RTO does not satisfy the TCP RTO condition.

30. The device of claim 29, wherein the processor is further operable to:

open a new TCP connection when the TCP window utilization satisfies the TCP window utilization condition; and

submit the HTTP request to an existing TCP connection when the TCP window utilization does not satisfy the TCP window utilization condition.

31. A computer program product for establishing transmission control protocol (TCP) connections for a wireless portable computing device, the computer program product comprising:

at least one instruction for receiving a uniform resource locator (URL) as part of a hyper text transfer protocol (HTTP) request;

at least one instruction for searching a host database with the URL;

at least one instruction for determining whether host data for the URL is available; and

at least one instruction for performing a domain name service (DNS) lookup for a URL host and for one or more sub-resource hosts, wherein all DNS lookups are performed in parallel at substantially the same time, when host data for the URL is available.

32. The computer program product of claim 31, further comprising:

at least one instruction for establishing at least one connection for the URL host and for each of the one or more sub-resource hosts.

33. The computer program product of claim 32, further comprising:

at least one instruction for loading a main resource; and

at least one instruction for loading one or more sub-resources.

34. The computer program product of claim 33, further comprising:

at least one instruction for updating the host database, when the web page for the URL is fully loaded.

35. The computer program product of claim 34, further comprising:

at least one instruction for determining whether a transmission control protocol (TCP) connection is open; and

at least one instruction for determining whether a host is operating on an HTTP version 1.1 or greater when the TCP connection is open.

36. The computer program product of claim 35, further comprising:

at least one instruction for determining whether a throughput (TP) headroom satisfies a TP headroom condition.

37. The computer program product of claim 36, further comprising:

at least one instruction for determining whether a TCP retransmission timeout (RTO) satisfies a TCP RTO condition; and

at least one instruction for submitting the HTTP request to an existing TCP connection when the TCP RTO does not satisfy the TCP RTO condition.

38. The computer program product of claim 37, further comprising:

at least one instruction for opening a new TCP connection when the TCP RTO satisfies the TCP RTO condition; and

at least one instruction for determining whether a TCP window utilization satisfies a TCP window utilization condition when the TCP RTO does not satisfy the TCP RTO condition.

39. The computer program product of claim 38, further comprising:

at least one instruction for opening a new TCP connection when the TCP window utilization satisfies the TCP window utilization condition; and

at least one instruction for submitting the HTTP request to an existing TCP connection when the TCP window utilization does not satisfy the TCP window utilization condition.