Methods and Systems for Providing Template Based Compression

• US 20110010465A1
• Filed: 07/18/2008
• Published: 01/13/2011
• Est. Priority Date: 07/18/2007
• Status: Abandoned Application

• Current Assignee: Trustees Of Columbia University In The City Of New York (Columbia University)
• Original Assignee: Trustees Of Columbia University In The City Of New York (Columbia University)
• Inventors: Forte, Andrea G, Schulzrinne, Henning
• Application Number:
  US12/669,377
• Publication Number:
  US 20110010465A1
• Time in Patent Office: Days
• US Class Current: 709/246
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers

Abstract

Methods and systems for providing template based compression are proxided. In some embodiments, methods for providing template based compression on a message having headers and corresponding values are provided, the methods comprising stripping a first portion of the headers and the corresponding values from the message, filtering a second portion of the headers and the corresponding values from the message based on the contents of a template; substituting a third portion of corresponding values in the message with indices from a dictionary corresponding to the third portion of corresponding values; encoding the indices and a fourth portion of the corresponding values into a packet in a different relative order than the corresponding values are arranged in the message, and transmitting the packet to a recipient.

Claims

1. A method for providing template based compression on a message having headers and corresponding values comprising:

stripping a first portion of the headers and the corresponding values from the message;

filtering a second portion of the headers and the corresponding values from the message based on the contents of a template;

substituting a third portion of corresponding values in the message with indices from a dictionary corresponding to the third portion of corresponding values;

encoding the indices and a fourth portion of the corresponding values into a packet in a different relative order than the corresponding values are arranged in the message; and

transmitting the packet to a recipient.

3. The method of claim 1, wherein the stripping determines that the first portion is unnecessary.

4. The method of claim 1 further comprising accessing a template that is based on the type of the message.

5. The method of claim 1, further comprising accessing a template that is based on the destination of the message.

6. The method of claim 5, wherein the accessing of the template is based on at least one of hardware and software associated with the destination.

7. The method of claim 5, wherein the accessing of the template is based on an entity associated with the destination.

8. The method of claim 1, further comprising synchronizing templates with the recipient in advance of transmitting the packet.

10. The method of claim 1, wherein the message is a Session Initiation Protocol message.

2. The method of claim I. further comprising performing error checking on the headers and the values remaining in the message after the stripping.

9. The method of claim 9, wherein transmitting is a time-sensitive operation.

11. A system for providing template based compression on a message having headers and corresponding values comprising:

user equipment that;

strips a first portion of the headers and the corresponding values from the message;

filters a second portion of the headers and the corresponding values from the message based on the contents of a template;

substitutes a third portion of corresponding values in the message with indices from a dictionary corresponding to the third portion of corresponding values;

encodes the indices and a fourth portion of the corresponding values into a packet in a different relative order than the corresponding values are arranged in the message; and

transmits the packet to a recipient.

12. The system of claim 11, wherein the user equipment also performs error checking on the headers and the values remaining in the message after the stripping.

13. The system of claim 11, wherein the stripping determines that the first portion is unnecessary.

14. The system of claim 11, wherein the user equipment also accesses a template that is based on the type of the message.

15. The system of claim 11, wherein the user equipment also accesses a template that is based on the destination of the message.

16. The system of claim 15, wherein the user equipment accesses the template based on at least one of hardware and software associated with the destination.

17. The system of claim 15, wherein the user equipment accesses the template based on an entity associated with the destination.

18. The system of claim 11, wherein the user equipment also synchronizes templates with the recipient in advance of transmitting the packet.

20. The system of claim 11, wherein the message is a Session Initiation Protocol message.

19. The system of claim 19, wherein transmitting is a time-sensitive operation.