System and method of expediting call establishment in mobile communications

• US 20030148779A1
• Filed: 10/30/2002
• Published: 08/07/2003
• Est. Priority Date: 04/30/2001
• Status: Abandoned Application

• Current Assignee: Winphoria Networks, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Winphoria Networks, Inc. (Motorola Solutions, Inc.)
• Inventors: Aravamudan, Murali, Naqvi, Shamim A., Iyer, Prakash R.
• Application Number:
  US10/284,042
• Publication Number:
  US 20030148779A1
• Time in Patent Office: Days
• US Class Current: 455/519
• CPC Class Codes: H04L 67/04 specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
• CPC Class Codes: H04L 67/56 Provisioning of proxy services store-and-forward switching systems in data switching networks H04L12/54
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion
• CPC Class Codes: H04L 69/085 specially adapted for interworking of IP-based networks with other networks
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/10 Push-to-Talk [PTT] or Push-On-Call services
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/20 Manipulation of established connections
• CPC Class Codes: H04W 76/45 for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

Call establishment is expedited in mobile communications. While a mobile station (MS) is in a dormant state, the mobile station is prepared for a half duplex mobile communications telephone call. In response to a user'"'"'s initiation of the half duplex mobile communications telephone call, the half duplex mobile communications telephone call is established based on the preparation of the mobile station.

Claims

1. A method for use in expediting call establishment in mobile communications, comprising:

while a mobile station (MS) is in a dormant state, preparing the mobile station for a half duplex mobile communications telephone call; and

in response to a user'"'"'s initiation of the half duplex mobile communications telephone call, establishing the half duplex mobile communications telephone call based on the preparation of the mobile station.

2. The method of claim 1, further comprising:

retrieving member information from a list of members of a group call group;

prior to establishment of the half duplex communications telephone call, providing the mobile station (MS) with presence information for at least one of the members.

3. The method of claim 1, further comprising:

prior to establishment of the half duplex communications telephone call, initiating port negotiation during a registration phase for the mobile station (MS).

4. The method of claim 1, further comprising:

compressing Session Initiation Protocol headers for the mobile station (MS).

5. The method of claim 1, further comprising:

compressing registration information for the mobile station (MS).

6. The method of claim 1, further comprising:

using Short Messaging Service to carry registration information for the mobile station (MS).

7. The method of claim 1, further comprising:

prior to establishment of the half duplex communications telephone call, based on the focus of a mobile user on a group indicated on a user interface, sending a message to another mobile station (MS) to cause the other MS to transition from a dormant to an active state.

8. The method of claim 1, further comprising:

prior to establishment of the half duplex communications telephone call, sending a status message to another mobile station (MS) to determine whether the other MS is ready to receive the half duplex communications telephone call and to cause the other MS to transition from a dormant to an active state.

9. A method for use in expediting call establishment in mobile communications, comprising:

retrieving member information from a list of members of a group call group;

prior to establishment of a group call for the group call group, providing a first mobile station (MS) with presence information for at least one of the members; and

based on the retrieved member information, establishing a group call between a second MS and the first MS, wherein the first MS is served by a first base station controller (BSC) and the second MS is served by a second BSC.

10. The method of claim 9, wherein the presence information indicates whether the at least one of the members has a handset that has responded to a paging request.

11. The method of claim 9, wherein the presence information indicates whether the at least one of the members has a handset that has generated a location update.

12. The method of claim 9, wherein the presence information indicates whether the at least one of the members has a handset that has executed a registration procedure.

13. The method of claim 9, further comprising

displaying, on a user interface display of the first MS, a visible indication based on the presence information.

14. A method for use in expediting call establishment in mobile communications, comprising:

retrieving member information from a list of members of a group call group;

prior to establishment of a group call for the group call group, initiating port negotiation during a registration phase for a first mobile station (MS); and

based on the retrieved member information, establishing a group call between a second MS and the first MS, wherein the first MS is served by a first base station controller (BSC) and the second MS is served by a second BSC.

15. The method of claim 14, further comprising

detecting traffic on a port used in the group call;

and

assigning talk control to a member of the group call group based on the detection.

16. The method of claim 14, further comprising

using a proxy switch to buffer voice packets from the first MS prior to completion of a signaling connection to the second MS.

17. A method for use in expediting call establishment in mobile communications, comprising:

retrieving member information from a list of members of a group call group;

compressing Session Initiation Protocol headers for a first mobile station (MS); and

based on the retrieved member information, establishing a group call between a second MS and the first MS, wherein the first MS is served by a first base station controller (BSC) and the second MS is served by a second BSC.

18. The method of claim 17, further comprising

removing unnecessary information from Session Initiation Protocol headers.

19. A method for use in expediting call establishment in mobile communications, comprising:

retrieving member information from a list of members of a group call group;

compressing registration information for a first mobile station (MS); and

based on the retrieved member information, establishing a group call between a second MS and the first MS, wherein the first MS is served by a first base station controller (BSC) and the second MS is served by a second BSC.

20. A method for use in expediting call establishment in mobile communications, comprising:

retrieving member information from a list of members of a group call group;

using Short Messaging Service to carry registration information for a first mobile station (MS); and

based on the retrieved member information, establishing a group call between a second MS and the first MS, wherein the first MS is served by a first base station controller (BSC) and the second MS is served by a second BSC.

21. A method for use in expediting call establishment in mobile communications, comprising:

retrieving member information from a list of members of a group call group;

prior to establishment of a group call, based on the focus of a mobile user on a group indicated on a user interface, sending a message to a first mobile station (MS) to cause the first MS to transition from a dormant to an active state; and

based on the retrieved member information, establishing a group call between a second MS and the first MS, wherein the first MS is served by a first base station controller (BSC) and the second MS is served by a second BSC.

22. The method of claim 21, further comprising

determining that the mobile user intends to select the group.

23. The method of claim 21, further comprising

detecting that the mobile user has caused a cursor on the first MS to linger over the group'"'"'s listing.

24. A method for use in expediting call establishment in mobile communications, comprising:

retrieving member information from a list of members of a group call group;

prior to establishment of a group call, sending a status message to a first mobile station (MS) to determine whether the first MS is ready to receive the group call and to cause the first MS to transition from a dormant to an active state; and

based on the retrieved member information, establishing a group call between a second MS and the first MS, wherein the first MS is served by a first base station controller (BSC) and the second MS is served by a second BSC.

25. The method of claim 24, wherein the status message causes the first MS to generate an audible signal.

26. A system for use in expediting call establishment in mobile communications, comprising:

a mobile station (MS) being in a dormant state and being preparing for a half duplex mobile communications telephone call; and

a proxy switch responsive to a user'"'"'s initiation of the half duplex mobile communications telephone call to establish the half duplex mobile communications telephone call based on the preparation of the mobile station.

27. A method for use in expediting call establishment in mobile communications, comprising:

while a mobile station (MS) is in a dormant state, preparing the mobile station for a half duplex mobile communications telephone call;

retrieving member information from a list of members of a group call group;

prior to establishment of the half duplex communications telephone call, providing the mobile station (MS) with presence information for at least one of the members;

prior to establishment of the half duplex communications telephone call, initiating port negotiation during a registration phase for the mobile station (MS);

compressing Session Initiation Protocol headers for the mobile station (MS);

compressing registration information for the mobile station (MS);

using Short Messaging Service to carry registration information for the mobile station (MS);

prior to establishment of the half duplex communications telephone call, based on the focus of a mobile user on a group indicated on a user interface, sending a message to another mobile station (MS) to cause the other MS to transition from a dormant to an active state;

prior to establishment, of the half duplex communications telephone call, sending a status message to another mobile station (MS) to determine whether the other MS is ready to receive the half duplex communications telephone call and to cause the other MS to transition from a dormant to an active state; and

in response to a user'"'"'s initiation of the half duplex mobile communications telephone call, establishing the half duplex mobile communications telephone call based on the preparation of the mobile station.

28. A method for use in expediting call establishment in mobile communications, comprising:

determining a preselected class of service for a mobile station (MS);

based on the preselected class of service, applying a latency reduction technique to establishment of a half duplex communications telephone call for the MS.