Method and apparatus for dynamically delivering service profiles to clients

• US 7,668,903 B2
• Filed: 07/07/2003
• Issued: 02/23/2010
• Est. Priority Date: 07/07/2003
• Status: Expired due to Fees

• Current Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Izadi, Shahram, Marcelo, Karen, Smith, Trevor Fredrick, Hong, Jason I., Edwards, Warren Keith, Newman, Mark Webster, Sedivy, Jana Zdislava
• Primary Examiner(s): ISMAIL, SHAWKI SAIF
• Application Number:
  US10/616,049
• Publication Number:
  US 20050010655A1
• Time in Patent Office: 2,423 Days
• Field of Search: 709/203, 709/216, 709217-219, 709223-224
• US Class Current: 709/203
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services

Abstract

One embodiment of the present invention provides a system that facilitates dynamic delivery of service profiles to a client. During operation, the system performs a discovery operation to allow the client to discover new services on a network. If a new service is discovered for which the client does not possess a service profile, the client to obtains the service profile from the new service and subsequently installs it, thereby enabling the client to interact with the new service.

Claims

1. A method that facilitates dynamic delivery of service profiles to a client, comprising:

performing a discovery operation to allow the client to discover new services on a network;

if a new service is discovered for which the client does not possess a service profile for the new service, causing the client to obtain the service profile from a service provider of the new service;

wherein causing the client to obtain the service profile involves;

causing the client to send a request for the service profile to the service provider of the new service, wherein the request includes type information identifying the type of device platform of the client; and

causing the service provider to select the service profile from a set of service profiles based on the received type information of the client; and

causing the service profile to be installed on the client to enable the client to use the new service,

wherein the service profile includes a specification that describes how to use the new service, and wherein causing the service profile to be installed on the client involves,

causing device-specific code to be generated to implement the specification, and

causing the code to be installed on the client; and

wherein the service profile is a dynamic extension profile, which provides commands that;

allow the client to query the service provider to determine which service profiles are available on the service provider; and

transfer the service profile from the service provider to the client.

2. The method of claim 1, wherein causing the client to obtain the service profile involves:

causing the client to send a request for the service profile to the service provider of the new service; and

causing the client to receive the service profile from the service provider of the new service.

3. The method of claim 1, wherein the service profile includes code, and wherein causing the service profile to be installed on the client involves causing the code to be installed on the client.

4. The method of claim 1, wherein the service profile is encoded in a universal form that can be executed by different types of clients.

5. The method of claim 1,

wherein there exist different service profile implementations for different types of clients;

and

wherein causing the client to obtain the service profile involves,

communicating characteristics of the client to the service provider of the new service,

allowing the service provider of the new service to select a service profile implementation for the client based on the characteristics of the client, and

allowing the service provider of the new service to send the selected service profile implementation to the client.

6. The method of claim 1, wherein causing the client to obtain the service profile from the service provider of the new service involves executing a dynamic extension profile, which implements a standard protocol that enables the client to acquire any profile the client needs at the time the profile is needed.

7. The method of claim 1,

wherein performing the discovery operation involves using the Bluetooth Service Discovery Protocol (SDP);

and

wherein the client and the service provider of the new service communicate using the Bluetooth networking standard.

8. The method of claim 1, wherein the service profile can define a service-specific Application Programming Interface (API).

9. The method of claim 1, wherein the service profile implements a domain-specific protocol stack associated with the new service.

10. A computer-readable storage medium storing instructions that when executed by a computer cause the computer to perform a method that facilitates dynamic delivery of service profiles to a client, the method comprising:

performing a discovery operation to allow the client to discover new services on a network;

if a new service is discovered for which the client does not possess a service profile for the new service, causing the client to obtain the service profile from a service provider of the new service;

wherein causing the client to obtain the service profile involves;

causing the client to send a request for the service profile to the service provider of the new service, wherein the request includes type information identifying the type of device platform of the client; and

causing the service provider to select the service profile from a set of service profiles based on the received type information of the client; and

causing the service profile to be installed on the client to enable the client to use the new service,

wherein the service profile includes a specification that describes how to use the new service, and wherein causing the service profile to be installed on the client involves,

causing device-specific code to be generated to implement the specification, and

causing the code to be installed on the client;

wherein the service profile is a dynamic extension profile, which provides commands that;

allow the client to query the service provider to determine which service profiles are available on the service provider; and

transfer the service profile from the service provider to the client.

11. The computer-readable storage medium of claim 10, wherein causing the client to obtain the service profile involves:

causing the client to send a request for the service profile to the service provider of the new service; and

causing the client to receive the service profile from the service provider of the new service.

12. The computer-readable storage medium of claim 10, wherein the service profile includes code, and wherein causing the service profile to be installed on the client involves causing the code to be installed on the client.

13. The computer-readable storage medium of claim 10, wherein the service profile is encoded in a universal form that can be executed by different types of clients.

14. The computer-readable storage medium of claim 10,

wherein there exist different service profile implementations for different types of clients;

and

wherein causing the client to obtain the service profile involves,

communicating characteristics of the client to the service provider of the new service,

allowing the service provider of the new service to select a service profile implementation for the client based on the characteristics of the client, and

allowing the service provider of the new service to send the selected service profile implementation to the client.

15. The computer-readable storage medium of claim 10, wherein causing the client to obtain the service profile from the service provider of the new service involves executing a dynamic extension profile, which implements a standard protocol that enables the client to acquire any profile the client needs at the time the profile is needed.

16. The computer-readable storage medium of claim 10,

wherein performing the discovery operation involves using the Bluetooth Service Discovery Protocol (SDP);

and

wherein the client and the service provider of the new service communicate using the Bluetooth networking standard.

17. The computer-readable storage medium of claim 10, wherein the service profile can define a service-specific Application Programming Interface (API).

18. The computer-readable storage medium of claim 10, wherein the service profile implements a domain-specific protocol stack associated with the new service.

19. An apparatus that facilitates dynamic delivery of service profiles to a client, comprising;

a device configured to provide a service;

a memory within the device containing the service profile that enables clients to use the service provided by the device;

a discovery mechanism configured to perform a discovery operation that allows the client to discover new services on a network;

a profile transfer mechanism, wherein if a new service is discovered for which the client does not possess a service profile for the new service, the profile transfer mechanism is configured to cause the service profile to be transferred from a service provider of the new service to the client;

wherein causing the client to obtain the service profile involves;

causing the client to send a request for the service profile to the service provider of the new service, wherein the request includes type information identifying the type of device platform of the client; and

causing the service provider to select the service profile from a set of service profiles based on the received type information of the client; and

an installation mechanism configured to cause the service profile to be installed on the client to enable the client to use the new service,

wherein the service profile includes a specification that describes how to use the new service, and wherein the installation mechanism is configured to,

cause device-specific code to be generated to implement the specification, and

cause the code to be installed on the client;

wherein the service profile is a dynamic extension profile, which provides commands that;

allow the client to query the service provider to determine which service profiles are available on the service provider; and

transfer the service profile from the service provider to the client.

20. The apparatus of claim 19, wherein the profile transfer mechanism is configured to:

cause the client to send a request for the service profile to the service provider of the new service; and

to

cause the client to receive the service profile from the service provider of the new service.

21. The apparatus of claim 19, wherein the service profile includes code, and wherein the installation mechanism is configured to cause the code to be installed on the client.

22. The apparatus of claim 19, wherein the service profile is encoded in a universal form that can be executed by different types of clients.

23. The apparatus of claim 19,

wherein there exist different service profile implementations for different types of clients;

and

wherein the profile transfer mechanism is configured to,

communicate characteristics of the client to the service provider of the new service,

allow the service provider of the new service to select a service profile implementation for the client based on the characteristics of the client, and to

allow the service provider of the new service to send the selected service profile implementation to the client.

24. The apparatus of claim 19, wherein the profile transfer mechanism is configured to execute a dynamic extension profile, which implements a standard protocol that enables the client to acquire any profile the client needs at the time the profile is needed.

25. The apparatus of claim 19,

wherein the discovery mechanism uses the Bluetooth Service Discovery Protocol (SDP);

and

wherein the client and the service provider of the new service communicate using the Bluetooth networking standard.

26. The apparatus of claim 19, wherein the service profile can define a service-specific Application Programming Interface (API).

27. The apparatus of claim 19, wherein the service profile implements a domain-specific protocol stack associated with the new service.

28. A device configured to dynamically deliver a service profile to a client to enable the client to use a service provided by the device, comprising:

the device configured to provide the service;

a memory within the device containing the service profile that enables clients to use the service provided by the device;

a service profile obtaining mechanism configured to cause the client to obtain the service profile by;

causing the client to send a request for the service profile to the device , wherein the request includes type information identifying the type of device platform of the client; and

causing the device to select the service profile from a set of service profiles based on the received type information of the client; and

a profile transfer mechanism configured on the device to transfer the service profile to the client on demand,

wherein the service profile includes a specification that describes how to use the new service, and wherein causing the service profile to be installed on the client involves,

causing device-specific code to be generated to implement the specification, and

causing the code to be installed on the client;

wherein the service profile is a dynamic extension profile, which provides commands that;

allow the client to query the service provider to determine which service profiles are available on the service provider; and

transfer the service profile from the service provider to the client.

29. The device of claim 28, further comprising a discovery mechanism configured to perform a discovery operation that allows devices to discover each other.