System for just in time caching for multimodal interaction

• US 7,657,652 B1
• Filed: 06/09/2003
• Issued: 02/02/2010
• Est. Priority Date: 06/09/2003
• Status: Active Grant

• Current Assignee: Sprint Spectrum LP (Deutsche Telekom AG)
• Original Assignee: Sprint Spectrum LP (Deutsche Telekom AG)
• Inventors: Balaji, Thenthiruperai S.
• Primary Examiner(s): Vaughn, Jr.; William C
• Assistant Examiner(s): Bayard; Djenane M
• Application Number:
  US10/457,308
• Time in Patent Office: 2,430 Days
• Field of Search: 709/227, 709/201, 709/226, 709/213, 709/217, 711/133, 707/1
• US Class Current: 709/242
• CPC Class Codes: G06F 16/9574 of access to content, e.g. by caching
• CPC Class Codes: G06F 16/9577 Optimising the visualization of content, e.g. distillation of HTML documents
• CPC Class Codes: H04L 67/5681 Pre-fetching or pre-delivering data based on network characteristics
• CPC Class Codes: H04L 67/5682 Policies or rules for updating, deleting or replacing the stored data

Abstract

A system for of optimizing delivery of multimodal content based on an adaptive, predictive caching algorithm. The system includes predictive caching software that receives at least one input regarding a preferred modality (e.g., audio, visual, or touch) for a particular application state. An application can have any number of states, each of which can, in turn, be presented in a different mode. The presentation mode for any particular application state can be selected by a user'"'"'s input or request. In response to at least one input, the value of a weight variable can be modified or maintained. The value corresponds to a preferred presentation mode for an application state. The system can cache content for more efficient delivery in at least one presentation mode according to the weight variable.

Claims

1. A method of optimizing delivery of multimodal content to a wireless device, the method comprising:

a caching server receiving at least one input that indicates at least one preferred presentation mode for a multimodal application, wherein the at least one input comprises the result of an algorithm that uses as a parameter user preferred presentation modes associated with multimodal applications;

the caching server modifying, in response to the at least one input, the value of a weight variable, so as to produce a modified weight variable;

the caching server sending the modified weight variable to a multimodal service node; and

the multimodal service node receiving the modified weight variable, associating the modified weight variable with a file stored in a local cache, and updating the contents of the local cache according to the modified weight variable, wherein updating the contents of the local cache according to the modified weight variable comprises refreshing the file stored in the local cache when (i) the time since the file was last refreshed is greater than a first threshold value, and (ii) the value of the modified weight variable associated with the file is greater than a second threshold value.

2. The method of claim 1, wherein updating the contents comprises adding content to the local cache.

3. The method of claim 1, wherein updating the contents further comprises deleting content from the local cache.

4. The method of claim 1, wherein the content added to the local cache is in the format of the at least one preferred presentation mode.

5. The method of claim 1, further comprising assigning an initial value to the weight variable.

6. The method of claim 5, wherein the initial value is determined by historical data regarding presentation mode for the multimodal application.

7. The method of claim 1, wherein the weight variable is modified based on a frequency of usage of a particular presentation mode for the multimodal application.

8. The method of claim 1, wherein the algorithm further uses as a parameter the amount of data that must be cached in a particular presentation mode for the multimodal application.

9. The method of claim 8, wherein the weight variable is modified based on the size of content of a particular presentation mode for the multimodal application.

10. A system for improving the delivery of multimodal content to a wireless device comprising:

a predictive caching server;

a multimodal service node;

wherein the predictive caching server is arranged to (i) receive at least one input that indicates at least one preferred presentation mode for a multimodal application, the at least one input comprising the result of an algorithm that uses as a parameter user preferred presentation modes associated with multimodal applications, (ii) modify the value of a weight variable in response to the at least one input, so as to produce a modified weight variable, and (iii) transmit the modified weight variable to the multimodal service node;

wherein the multimodal service node is arranged to (i) receive the modified weight variable, (ii) associate the modified weight variable with a file stored in a local cache, and (iii) update the contents of the local cache according to the modified weight variable; and

wherein the multimodal service node is arranged to update the contents of the local cache according to the modified weight variable comprises the multimodal service node being arranged to refresh the file stored in the local cache when (i) the time since the file was last refreshed is greater than a first threshold value, and (ii) the value of the modified weight variable associated with the file is greater than a second threshold value.

11. The system of claim 10, wherein the at least one user input comprises an initial value assigned to the weight variable.

12. The system of claim 10, wherein the at least one input is sent from the multimodal service node.

13. The system of claim 10, wherein the multimodal service node is further arranged to transmit data to the wireless device, wherein the data is stored in the local cache.

14. The system of claim 10, wherein the at least one user input comprises a user selection of presentation mode.

15. The system of claim 10, wherein the at least one user input comprises a frequency of usage of a presentation mode for a multimodal application.

16. The predictive caching server of claim 10 further arranged to establish an initial value of the weight variable in accordance with an initial input.