Granted Patent B2

US 10,305,697 · App. 15/633,943 · Granted May 28, 2019

Abstract

Claims (90)

1. A method of preparing travel related information for broadcast, the method comprising:

receiving travel-related-information messages (TRIMs) from one or more information sources;

adding information from at least a first TRIM to a first message group;

adding information from at least a second TRIM to a second message group;

determining that a size of a first TRIM reporting message generated from the first message group will exceed a permissible message size;

removing excess information from the first message group to decrease the size of the first TRIM reporting message to the permissible message size or less;

adding at least a portion of the excess information to the second message group;

generating a final first TRIM reporting message from the first message group;

generating a final second TRIM reporting message from the second message group;

transmitting the final first TRIM reporting message for broadcast to an end-user device via a first service port; and

transmitting the final second TRIM reporting message for broadcast to the end-user device via a second service port, different from the first service port.

2. The method of claim 1 , further comprising:

determining that a number of TRIMs including information to be added to the first message group exceeds a threshold number of TRIMs;

removing information from at least an excess number of TRIMs from the first message group; and

adding information from the at least an excess number of TRIMs to the second message group.

3. The method of claim 1 , wherein:

the final first TRIM reporting message is a Transport Protocol Expert Group (TPEG™) message; and

the permissible message size is determined based on a TPEG™ message size limitation of the end-user device.

4. The method of claim 1 , further comprising:

determining, on a per-market basis, whether information from a particular TRIM is to be included in the first message group or the second message group.

5. The method of claim 1 , further comprising:

adding information from a particular TRIM to the first message group based on a type of information associated with the first message group; and

adding information from the particular TRIM to the second message group based on a type of information associated with the second message group.

6. The method of claim 1 , further comprising:

adding information from a particular TRIM to the first message group based on a granularity of information associated with the first message group; and

adding information from the particular TRIM to the second message group based on a granularity of information associated with the second message group.

7. The method of claim 1 , further comprising:

encrypting the final first TRIM reporting message using a first key; and

encrypting the final second TRIM reporting message using a second key, different from the first key.

8. A device comprising:

a processor and associated memory configured to implement a travel message server, the travel message server comprising:

at least one interface configured to receive travel-related-information messages (TRIMs) from one or more information sources;

a load balancer configured to:

add information from at least a first TRIM to a first message group;

add information from at least a second TRIM to a second message group;

determine that a size of a first TRIM reporting message generated from the first message group will exceed a permissible message size;

remove excess information from the first message group to decrease the size of the first TRIM reporting message to the permissible message size or less;

add at least a portion of the excess information to the second message group;

at least one transport protocol experts group (TPEG™) encoder configured to:

generate a final first TRIM reporting message from the first message group;

generate a final second TRIM reporting message from the second message group;

the at least one interface configured to:

transmit the final first TRIM reporting message for broadcast to an end-user device via a first service port; and

transmit the final second TRIM reporting message for broadcast to the end-user device via a second service port, different from the first service port.

9. The device of claim 8 , the load balancer further configured to:

determine that a number of TRIMs including information to be added to the first message group exceeds a threshold number of TRIMs;

remove information from at least an excess number of TRIMs from the first message group; and

add information from the at least an excess number of TRIMs to the second message group.

10. The device of claim 8 , the load balancer further configured to:

determine the permissible message size based on a TPEG™ message size limitation of the end-user device.

11. The device of claim 8 , the load balancer further configured to:

determine, on a per-market basis, whether information from a particular TRIM is to be included in the first message group or the second message group.

12. The device of claim 8 , the load balancer further configured to:

add information from a particular TRIM to the first message group based on a type of information associated with the first message group; and

add information from the particular TRIM to the second message group based on a type of information associated with the second message group.

13. The device of claim 8 , the load balancer further configured to:

add information from a particular TRIM to the first message group based on a type of information associated with the first message group; and

add information from the particular TRIM to the second message group based on a type of information associated with the second message group.

14. The device of claim 8 , further comprising:

at least one encryption module configured to:

encrypt the final first TRIM reporting message using a first key; and

encrypt the final second TRIM reporting message using a second key, different from the first key.

15. A method of preparing travel-related information for delivery to end users, the method comprising:

receiving travel-related-information messages (TRIMs) from one or more information sources;

dividing the TRIMs between a first message group and a second message group, wherein:

the first message group excludes information from at least some TRIMs pertaining to at least one class of roads;

the second message group includes information from the at least some TRIMs excluded from the first message group;

generating a final first TRIM reporting message based on the first message group;

encrypting the final first TRIM reporting message using a first encryption key;

transmitting the final first TRIM reporting message to a station importer to be multiplexed with media content and delivered to an end-user device via a first service port;

generating a second final TRIM reporting message based on the first message group;

encrypting the second final TRIM reporting message using a second encryption key; and

transmitting the second final TRIM reporting message to the station importer to be multiplexed with media content and delivered to the end-user device via a second service port, different from the first service port.

16. The method of claim 15 , further comprising:

determining, prior to generating the final first TRIM reporting message, that a size of an intermediate first TRIM reporting message generated from the first message group exceeds a permissible message size;

removing excess information from the first message group to decrease the size of the intermediate first TRIM reporting message to the permissible message size or less; and

adding at least a portion of the excess information to the second message group.

17. The method of claim 16 , wherein:

the final first TRIM reporting message is a Transport Protocol Expert Group (TPEG™) message; and

the permissible message size is determined based on a TPEG™ message size limitation of the end-user device.

18. The method of claim 15 , further comprising:

determining, prior to generating any TRIM reporting message, that a number of TRIMs including information to be added to the first message group exceeds a threshold number of TRIMs;

removing information from at least an excess number of TRIMs from the first message group; and

adding information from the at least an excess number of TRIMs to the second message group.

19. The method of claim 15 , wherein dividing the TRIMs between a first message group and a second message group includes:

excluding, from the first message group, information having a granularity finer than a granularity threshold; and

including, in the second message group, the information excluded from the first message group.

20. The method of claim 15 , wherein dividing the TRIMs between a first message group and a second message group includes:

excluding, from the first message group, predictive information for road classes smaller than a threshold size; and

including, in the second message group, predictive information for road classes equal to or larger than a threshold size.

Assignments (16)