Method, system and computer program to enable querying of resources in a certain context by definition of SIP even package

• US 8,903,820 B2
• Filed: 06/23/2004
• Issued: 12/02/2014
• Est. Priority Date: 06/23/2004
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Trossen, Dirk, Pavel, Dana
• Primary Examiner(s): Beausoliel, Jr., Robert
• Assistant Examiner(s): Pham, Michael
• Application Number:
  US10/874,946
• Publication Number:
  US 20050289097A1
• Time in Patent Office: 3,814 Days
• Field of Search: 707/736
• US Class Current: 707/736
• CPC Class Codes: H04L 41/06 Management of faults, events, alarms or notifications
• CPC Class Codes: H04L 63/102 Entity profiles
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 28/16 Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• CPC Class Codes: H04W 80/10 adapted for application session management, e.g. SIP [Session Initiation Protocol] connection management H04W76/00; arrangements for session management H04L67/14

Abstract

Disclosed is a system and a method to provide event notification. The method operates an event server (20) with a subscriber unit (12). The method includes formulating a query; sending a subscription request message to the event server, the subscription request message comprising the query; responsive to a receipt of the subscription request message, parsing the query; and accepting the subscription request if the query is successfully parsed and understood, and if appropriate resource data is available to the event server to determine a result of the query.

Claims

1. A method, comprising:

receiving a session initiation protocol subscribe message at a session initiation protocol event server from a user device, the session initiation protocol subscribe message being for a subscription to an event package comprised of a single event, where the session initiation protocol subscribe message comprises a message header specifying a resource query event identifier and a message body that comprises a resource query formulated in a query language, the resource query operating on resource data available at at least one of the session initiation protocol event server and through the session initiation protocol event server;

determining if the subscription can be granted by parsing semantic information contained in the message body of the session initiation protocol subscribe message and, based on the parsed semantic information, determining using at least an aggregation of existing resource state information a list of resources that are a priori unknown at the user device and that fulfill constraints of the resource query during a lifetime of the subscription, where the list of resources that are a priori unknown at the user device comprises a plurality of resources;

sending the determined list of resources that fulfill constraints of the resource query to the user device as a start state of the subscription; and

during the lifetime of the subscription sending a notification to the user device in response to a change occurring in the determined list of resources.

2. The method as in claim 1, where it is determined that the subscription cannot be granted if the semantic information cannot be successfully parsed, if appropriate resource information cannot be obtained to respond to the resource query, or if the session initiation protocol event server cannot support the event package.

3. The method as in claim 1, where determining the list of resources is performed at the session initiation protocol event server in cooperation with an authorization policy management function to verify existence of access rights for the user terminal to the determined resources.

4. The method as in claim 1, where parsing is performed at the session initiation protocol event server in cooperation with an ontology server.

5. The method as in claim 1, where the message body comprises at least one link to an ontology server to be used when parsing the semantic information.

6. The method as in claim 1, where parsing is performed at the session initiation protocol event server using a content indirection technique.

7. The method as in claim 1, where determining if the subscription can be granted comprises consulting at least one of a local source of resource data and a remote source of resource data and determining if appropriate resource data is available to grant the subscription.

8. The method as in claim 1, where the notification comprises a complete list of the resources including a resource or resources that have changed.

9. The method as in claim 1, where the notification comprises a partial list of the resources containing only the resource or resources that have changed.

10. The method as in claim 1, where the user device is embodied as a mobile wireless telecommunications device.

11. The method as in claim 1, where resource data is comprised of at least some of presence data, watcherinfo, call state and application-specific events.

12. A method, comprising:

sending a session initiation protocol subscribe message to a session initiation protocol (SIP) event server from a user device, the session initiation protocol subscribe message comprising a resource query being for a subscription to an event package comprised of a single event and comprising information for enabling the session initiation protocol event server to determine a list of resources that are a priori unknown at the user device that fulfill constraints of the resource query during a lifetime of the subscription, where the list of resources comprises a plurality of resources, where the session initiation protocol subscribe message comprises a message header specifying a resource query event identifier and a message body that comprises the resource query formulated in a query language, the resource query operating on resource data available at at least one of the session initiation protocol event server and through the session initiation protocol event server;

receiving the determined list of resources that fulfill constraints of the resource query at the user device as a start state of the subscription; and

during the lifetime of the subscription, receiving a notification at the user device in response to a change occurring in the determined list of resources.

13. The method as in claim 12, where the message body comprises at least one link to an ontology server to be used when parsing the semantic information.

14. The method as in claim 12, where the notification comprises one of a complete list of the resources including a resource or resources that have changed or a partial list of the resources containing only the resource or resources that have changed.

15. The method as in claim 12, where the user device is embodied as a mobile wireless telecommunications device.

16. An apparatus comprising:

at least one processor; and

at least one memory including computer program code,

the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to

receive a session initiation protocol subscribe message at a session initiation protocol event server from a user device, the session initiation protocol subscribe message being for a subscription to an event package comprised of a single event, where the session initiation protocol subscribe message comprises a message header specifying a resource query event identifier and a message body that comprises a resource query formulated in a query language, the resource query operating on resource data available at at least one of the session initiation protocol event server and through the session initiation protocol event server;

determine if the subscription can be granted by parsing semantic information contained in the message body of the session initiation protocol subscribe message and, based on the parsed semantic information, determining using at least an aggregation of existing resource state information a list of resources that are a priori unknown at the user device and that fulfill constraints of the resource query during a lifetime of the subscription, where the list of resources are a priori unknown at the user device comprises a plurality of resources;

sending the determined list of resources that fulfill constraints of the resource query to the user device as a start state of the subscription; and

during the lifetime of the subscription, to send a notification to the user device in response to a change occurring in the determined list of resources.

17. The apparatus as in claim 16, where it is determined that the subscription cannot be granted if the semantic information cannot be successfully parsed, if appropriate resource information cannot be obtained to respond to the resource query, or if the session initiation protocol event server cannot support the event package.

18. The apparatus as in claim 16, where determining the list of resources is performed at the session initiation protocol event server in cooperation with an authorization policy management function to verify existence of access rights for the user terminal to the determined resources.

19. The apparatus as in claim 16, where parsing is performed at the session initiation protocol event server in cooperation with an ontology server.

20. The apparatus as in claim 16, where the message body comprises at least one link to an ontology server to be used when parsing the semantic information.

21. The apparatus as in claim 16, where parsing is performed at the session initiation protocol event server using a content indirection technique.

22. The apparatus as in claim 16, where determining if the subscription can be granted comprises consulting at least one of a local source of resource data and a remote source of resource data and determining if appropriate resource data is available to grant the subscription.

23. The apparatus as in claim 16, where the notification comprises a complete list of the resources including a resource or resources that have changed or comprises a partial list of the resources containing only the resource or resources that have changed.

24. The apparatus as in claim 16, where resource data is comprised of at least some of presence data, watcherinfo, call state and application-specific events.

25. An apparatus comprising:

at least one processor; and

at least one memory including computer program code,

the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to

send a session initiation protocol subscribe message to a session initiation protocol event server from a user device, the session initiation protocol subscribe message comprising a resource query for a subscription to an event package comprised of a single event and comprising information for enabling the session initiation protocol event server to determine a list of resources that are a priori unknown at the user device that fulfill constraints of the resource query during a lifetime of the subscription, where the list of resources comprises a plurality of resources, where the session initiation protocol subscribe message comprises a message header specifying a resource query event identifier and a message body that comprises the resource query formulated in a query language, the resource query operating on resource data available at at least one of the session initiation protocol event server and through the session initiation protocol event server;

receive the determined list of resources that fulfill constraints of the resource query at the user device as a start state of the subscription; and

during the lifetime of the subscription, to receive a notification at the user device in response to a change occurring in the determined list of resources.

26. The apparatus as in claim 25, where the message body comprises at least one link to an ontology server to be used when parsing the semantic information.

27. The apparatus as in claim 25, where the notification comprises a complete list of the resources including a resource or resources that have changed or comprises a partial list of the resources containing only the resource or resources that have changed.

28. The apparatus as in claim 25, where the user device is embodied as a mobile wireless telecommunications device.

29. A non-transitory computer-readable storage medium carrying one or more sequences of one or more instructions which, when executed by one or more processors, cause an apparatus to at least perform the following steps:

receiving a session initiation protocol subscribe message at a session initiation protocol event server from a user device, the session initiation protocol subscribe message being for a subscription to an event package comprised of a single event, where the session initiation protocol subscribe message comprises a message header specifying a resource query event identifier and a message body that comprises a resource query formulated in a query language, the resource query operating on resource data available at at least one of the session initiation protocol event server and through the session initiation protocol event server;

determining if the subscription can be granted by parsing semantic information contained in the message body of the session initiation protocol subscribe message and, based on the parsed semantic information, determining using an aggregation of at least existing resource state information a list of resources that are a priori unknown at the user device and that fulfill constraints of the resource query during a lifetime of the subscription, where the list of resources that are a priori unknown at the user device comprises a plurality of resources;

sending the determined list of resources that fulfill constraints of the resource query to the user device as a start state of the subscription; and

during the lifetime of the subscription sending a notification to the user device in response to a change occurring in the determined list of resources.

30. The non-transitory computer-readable storage medium as in claim 29, where it is determined that the subscription cannot be granted if the semantic information cannot be successfully parsed, if appropriate resource information cannot be obtained to respond to the resource query, or if the session initiation protocol event server cannot support the event package.

31. The non-transitory computer-readable storage medium as in claim 29, where determining the list of resources is performed at the session initiation protocol event server in cooperation with an authorization policy management function to verify existence of access rights for the user terminal to the determined resources, and where parsing is performed at the session initiation protocol event server in cooperation with an ontology server.

32. The non-transitory computer-readable storage medium as in claim 29, where the message body comprises at least one link to an ontology server to be used when parsing the semantic information.

33. The non-transitory computer-readable storage medium as in claim 29, where parsing is performed at the session initiation protocol event server using a content indirection technique.

34. The non-transitory computer-readable storage medium as in claim 29, where the notification comprises a complete list of the resources including a resource or resources that have changed or comprises a partial list of the resources containing only the resource or resources that have changed.

35. The non-transitory computer-readable storage medium as in claim 29, where resource data is comprised of at least some of presence data, watcherinfo, call state and application-specific events.

36. A non-transitory computer-readable storage medium carrying one or more sequences of one or more instructions which, when executed by one or more processors, cause an apparatus to at least perform the following steps:

sending a session initiation protocol subscribe message to a session initiation protocol event server from a user device, the session initiation protocol subscribe message comprising a resource query for a subscription to an event package comprised of a single event and comprising information for enabling the session initiation protocol event server to determine a list of resources that are a priori unknown at the user device that fulfill constraints of the resource query during a lifetime of the subscription, where the list of resources comprises a plurality of resources, where the query comprises a message header specifying a resource query event identifier and a message body that comprises the resource query formulated in a query language, the resource query operating on resource data available at at least one of the session initiation protocol event server and through the session initiation protocol event server;

receiving the determined list of resources that fulfill constraints of the resource query at the user device as a start state of the subscription; and

during the lifetime of the subscription, receiving a notification at the user device in response to a change occurring in the determined list of resources.

37. The non-transitory computer-readable storage medium as in claim 36, where the message body comprises at least one link to an ontology server to be used when parsing the semantic information.

38. The non-transitory computer-readable storage medium as in claim 36, where the notification comprises a complete list of the resources including a resource or resources that have changed or comprises a partial list of the resources containing only the resource or resources that have changed.

39. The non-transitory computer-readable storage medium as in claim 36, where the user device is embodied as a mobile wireless telecommunications device.