Method for securing privacy in automatic answer mode of push-to service

• US 20080037574A1
• Filed: 06/06/2007
• Published: 02/14/2008
• Est. Priority Date: 08/09/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, Sung Bum, Huh, Kang-Suk
• Granted Patent: US 8,054,843 B2
• Time in Patent Office: Days
• US Class Current: 370/416
• CPC Class Codes: H04L 63/0407 wherein the identity of one or more communicating identities is hidden cryptographic mechanisms or cryptographic arrangements for anonymous credentials or for identity based cryptographic systems H04L9/00
• CPC Class Codes: H04L 65/4025 where none of the additional parallel sessions is real time or time sensitive, e.g. downloading a file in a parallel FTP session, initiating an email or combinational services
• CPC Class Codes: H04L 65/4061 Push-to services, e.g. push-to-talk or push-to-video
• CPC Class Codes: H04W 12/02 Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
• CPC Class Codes: H04W 4/10 Push-to-Talk [PTT] or Push-On-Call services
• CPC Class Codes: H04W 76/45 for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services

Abstract

A method of securing an invited Push-To (PT) user'"'"'s privacy in an automatic answer mode of a PT service is discussed. According to an embodiment of the present invention, a method for performing a PT (Push-To) service setting procedure, includes transmitting PT service setting information of a PT client to a PT server during a PT service setting procedure, the PT service setting information including answer mode setting information and privacy information, the answer mode setting information indicating if an answer mode of the PT client is an automatic answer mode or a manual answer mode, the privacy information indicating whether or not an identity of the PT client is to be kept private in the answer mode; and storing the PT service setting information of the PT client in the PT server, whereby the PT server can selectively inform identification information of the PT client to another PT client based on the privacy information.

Claims

1. A method for performing a PT (Push-To) service setting procedure, comprising:

transmitting PT service setting information of a PT client to a PT server during a PT service setting procedure, the PT service setting information including answer mode setting information and privacy information, the answer mode setting information indicating if an answer mode of the PT client is an automatic answer mode or a manual answer mode, the privacy information indicating whether or not an identity of the PT client is to be kept private in the answer mode; and

storing the PT service setting information of the PT client in the PT server, whereby the PT server can selectively inform identification information of the PT client to another PT client based on the privacy information.

2. The method of claim 1, wherein when the answer mode setting information indicates that the answer mode is an automatic answer mode, the PT server does not inform the identification information of the PT client if the privacy information indicates that the identity of the PT client is to be kept private.

3. The method of claim 1, wherein when the answer mode setting information indicates that the answer mode is an automatic answer mode, the PT server informs the identification information of the PT client if the privacy information indicates that the identity of the PT client is not to be kept private.

4. The method of claim 1, wherein two possible values of the privacy information are ‘

none’ and

‘

id’

, the ‘

none’

value indicating that the identity of the PT client is not to be kept private, the ‘

id’

value indicating that the identify of the PT client is to be kept private.

5. A method for controlling transmission of privacy information, comprising:

receiving, by a first PT (Push-To) server, a session invitation for inviting at least one second PT client to a PT session from a first PT client in an automatic answer mode;

receiving, by the first PT server, a first message relating to a progress status of the session from a second PT server, the first message including privacy information of one of the at least one second PT client, the privacy information indicating whether or not an identity of the one of the at least one second PT client is to be kept private; and

transmitting, by the first PT server, a second message in response to the first message to the first PT client, wherein the second message selectively includes identification information of the one of the at least one second PT client based on the privacy information.

6. The method of claim 5, wherein the second message further includes connection status information indicating a current connection status of the session.

7. The method of claim 5, wherein in the transmitting step, the second message includes the identification information of the one of the at least one second PT client if the privacy information indicates that the identity of the one of the at least one second PT client is not to be kept private.

8. The method of claim 7, wherein in the transmitting step, the second messages excludes the identification information of the one of the at least one second PT client if the privacy information indicates that the identity of the one of the at least one second PT client is to be kept private.

9. The method of claim 5, wherein the second message includes a <

status>

element having a ‘

dialing-out’

value.

10. The method of claim 5, wherein the first message is a SIP (Session Initiation Protocol) 183 Session Progress message, and the second message is a SIP NOTIFY message.

11. The method of claim 5, wherein the second PT server obtains the privacy information of the one of the at least one second PT client from an XDM (XML Database Management) server, and transmits the first message including the obtained privacy information to the first PT server.

12. A method for controlling PT (Push-To) client identification information in a PT service, comprising:

receiving, by a PT server, a session invitation message, wherein the session invitation message is a message inviting at least one second PT client to a session with a first PT client;

determining, by the PT server, whether or not a privacy is requested by the at least one second PT client to keep an identification of the corresponding second PT client private; and

transmitting, by the PT server, at least one response message in response to the session invitation message to another PT server, each of the at least one response message including a privacy parameter indicating whether or not the identification of the corresponding second PT client is to be kept private,

wherein a value of the privacy parameter varies depending on results of the determining step.

13. The method of claim 12, wherein each of the at least one response message is a SIP (Session Initiation Protocol) 183 Session Progress message.

14. The method of claim 12, wherein the privacy parameter has a first value, if the determining step determines that the privacy is requested by the corresponding second PT client in an automatic answer mode.

15. The method of claim 14, wherein the first value is ‘

id’

.

16. The method of claim 15, wherein the privacy parameter has a second value, if the determining step determines that the privacy is not requested by the corresponding second PT client in an automatic answer mode.

17. The method of claim 16, wherein the second value is ‘

none’

.

18. The method of claim 12, wherein the privacy parameter is provided in a header of the response message.

19. The method of claim 12, wherein the determining step includes:

(a) checking, by the PT server, PT service setting information of the corresponding second PT client;

(b) determining whether or not the PT service setting information indicates that the identification of the corresponding second PT client is to be kept private in an automatic answer mode; and

(c) determining whether or not the privacy is requested by the corresponding second PT client based on results of the step (b).

20. The method of claim 19, wherein the step (c) determines that the privacy is requested by the corresponding second PT client, if the step (b) determines that a privacy parameter in the PT service setting information has a value ‘

id’

in the automatic answer mode.

21. The method of claim 19, wherein the step (c) determines that the privacy is not requested by the corresponding second PT client, if the step (b) determines that a privacy parameter in the PT service setting information has a value ‘

none’

in the automatic answer mode.

22. The method of claim 12, wherein the determining step determines whether or not a privacy is requested by the corresponding second PT client based on privacy information obtained from an XDM (XML Database Management) server.

23. A method for controlling transmission of PT (Push-To) client identification information in a PT service, comprising:

receiving, by a PT server, a first message for inviting a second PT client to a PT session, from a first PT client in an automatic answer mode;

obtaining privacy information of the second PT client in response to the session invitation, the privacy information indicating whether or not an identity of the second PT client is to be kept private; and

transmitting, by the PT server, a second message in the automatic answer mode to the first PT client based on the privacy information.

24. The method of claim 23, wherein the second message includes identification information of the second PT client if the privacy information indicates that the identity of the second PT client is not to be kept private.

25. The method of claim 24, wherein the second message excludes the identification information of the second PT client if the privacy information indicates that the identity of the second PT client is to be kept private.

26. The method of claim 23, wherein the first message is a SIP (Session Initial Protocol) INVITE message, and the second message is a SIP NOTIFY message.