DETERMINING WHETHER TO SWITCH BETWEEN GROUP CALLS BASED ON PRIORITY WITHIN A WIRELESS COMMUNICATIONS SYSTEM

• US 20100246535A1
• Filed: 03/09/2010
• Published: 09/30/2010
• Est. Priority Date: 03/30/2009
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: LINDNER, MARK A.
• Granted Patent: US 8,700,081 B2
• Time in Patent Office: Days
• US Class Current: 370/332
• CPC Class Codes: H04W 36/385 of the core network
• CPC Class Codes: H04W 76/45 for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services

Abstract

Embodiments of the present invention are directed to determining whether to switch between group calls based on priority within a wireless communications system. In an embodiment, an announce message is received at a given access terminal that announces a second group session when the given access terminal is participating in the first group session. The given access terminal acquires one or more priority levels associated with one or more of the first and second group sessions. The access terminal determines whether to switch from the first group session to the second group session based on the one or more priority levels. The access terminal selectively switches from the first group session to the second group session based on the determination.

Claims

1. A method of selectively switching from a first group session to a second group session within a wireless communications system, comprising:

receiving an announce message at a given access terminal that announces a second group session when the given access terminal is participating in the first group session;

acquiring one or more priority levels associated with one or more of the first and second group sessions;

determining whether to switch from the first group session to the second group session based on the one or more priority levels; and

selectively switching from the first group session to the second group session based on the determining step.

2. The method of claim 1, wherein the acquiring step includes:

determining a first priority level associated with the first group session based on a priority profile of the given access terminal; and

determining a second priority level associated with the second group session based on the priority profile of the given access terminal.

3. The method of claim 2, wherein the determining step determines to switch from the first group session to the second group session if the second priority level has a higher priority than the first priority level.

4. The method of claim 2, wherein the determination of the first priority level includes:

identifying an access terminal identifier of an originator of the first group session; and

obtaining, from the priority profile, the first priority level as a priority level associated with the access terminal identifier as an originator.

5. The method of claim 4, wherein the access terminal identifier identifies the given access terminal.

6. The method of claim 2, wherein the determination of the first priority level includes:

identifying a class of access terminals to which an originator of the first group session belongs; and

obtaining, from the priority profile, the first priority level as a priority level associated with the class of access terminals as an originator.

7. The method of claim 2, wherein the determination of the first priority level includes:

identifying an access terminal identifier of at least one target access terminal of the first group session; and

obtaining, from the priority profile, the first priority level as a priority level associated with the access terminal identifier as a target access terminal.

8. The method of claim 7, wherein the access terminal identifier identifies the given access terminal.

9. The method of claim 2, wherein the determination of the first priority level includes:

identifying a class of access terminals to which at least one target access terminal of the first group session belongs; and

obtaining, from the priority profile, the first priority level as a priority level associated with the class of access terminals as a target access terminal.

10. The method of claim 2, wherein the determination of the second priority level includes:

identifying an access terminal identifier of an originator of the second group session; and

obtaining, from the priority profile, the second priority level as a priority level associated with the access terminal identifier as an originator.

11. The method of claim 2, wherein the determination of the second priority level includes:

identifying a class of access terminals to which an originator of the second group session belongs; and

obtaining, from the priority profile, the second priority level as a priority level associated with the class of access terminals as an originator.

12. The method of claim 2, wherein the determination of the second priority level includes:

identifying an access terminal identifier of at least one target access terminal of the second group session; and

obtaining, from the priority profile, the second priority level as a priority level associated with the access terminal identifier as a target access terminal.

13. The method of claim 12, wherein the identifying step extracts the access terminal identifier of the at least one target access terminal from the received announce message or from an out-of-band message in addition to the received announce message.

14. The method of claim 2, wherein the determination of the second priority level includes:

identifying a class of access terminals to which at least one target access terminal of the second group session belongs; and

obtaining, from the priority profile, the second priority level as a priority level associated with the class of access terminals as a target access terminal.

15. The method of claim 2, wherein the priority profile includes a first set of priority level values for access terminal identifiers or classes of access terminals that correspond to an originator of a given group session, and a second set of priority level values for the access terminal identifiers or the classes of access terminals that correspond to a target access terminal of a given group session.

16. The method of claim 15, wherein lower priority level values correspond to higher priority levels, and wherein the second set of priority level values are greater than or equal to corresponding entries within the first set of priority level values.

17. The method of claim 15, wherein, if the given group session is associated with multiple priority level values within the priority profile, a priority level value associated with a highest level of priority among the multiple priority level values is used as the priority level for the given group session.

18. The method of claim 1, wherein the switching step is performed automatically by the given access terminal without intervention by a user of the given access terminal.

19. The method of claim 1, wherein the acquiring step acquires the one or more priority levels based on information stored in memory at the given access terminal, from a network entity external to the given access terminal, from a dynamic calculation performed at the given terminal or the external network entity or a combination thereof.

20. The method of claim 19, wherein the dynamic calculation of the one or more priority levels is based on user input received at the given access terminal relevant to priority level of the first multicast session.

21. The method of claim 20, wherein the user input indicates that the first multicast session has increased or decreased in importance.

22. The method of claim 1, further comprising:

receiving a notification, after the announce message is received, that indicates that one or more access terminals other than an originator of the second group session has joined the second group session;

wherein the acquiring step is based at least in part upon knowledge that the one or more access terminals has joined the second group session.

23. The method of claim 1, wherein the acquiring step acquires a higher-priority level for the second group session when the one or more access terminals are known to have joined the second group session as compared to when acceptance of the second group session by the one or more other access terminals is speculative.

24. An access terminal configured to selectively switch from a first group session to a second group session within a wireless communications system, comprising:

means for receiving an announce message at the access terminal that announces a second group session when the access terminal is participating in the first group session;

means for acquiring one or more priority levels associated with one or more of the first and second group sessions;

means for determining whether to switch from the first group session to the second group session based on the one or more priority levels; and

means for selectively switching from the first group session to the second group session based on the determination.

25. An access terminal configured to selectively switch from a first group session to a second group session within a wireless communications system, comprising:

logic configured to receive an announce message at the access terminal that announces a second group session when the access terminal is participating in the first group session;

logic configured to acquire one or more priority levels associated with one or more of the first and second group sessions;

logic configured to determine whether to switch from the first group session to the second group session based on the one or more priority levels; and

logic configured to selectively switch from the first group session to the second group session based on the determination.

26. A computer-readable storage medium comprising instructions, which, when executed by an access terminal configured to selectively switch from a first group session to a second group session within a wireless communications system, cause the access terminal to perform operations, the instructions comprising:

program code to receive an announce message at the access terminal that announces a second group session when the access terminal is participating in the first group session;

program code to acquire one or more priority levels associated with one or more of the first and second group sessions;

program code to determine whether to switch from the first group session to the second group session based on the one or more priority levels; and

program code to selectively switch from the first group session to the second group session based on the determination.