Disconnection management system for wireless voice communications

• US 5,752,185 A
• Filed: 11/21/1994
• Issued: 05/12/1998
• Est. Priority Date: 11/21/1994
• Status: Expired due to Term

• Current Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Ahuja, Sudhir Raman
• Primary Examiner(s): Bost, Dwayne
• Assistant Examiner(s): TROST IV, WILLIAM GEORGE
• Application Number:
  US08/342,496
• Time in Patent Office: 1,268 Days
• Field of Search: 379/58, 379/59, 379/60, 379/61, 379/62, 379/63, 379/112, 379/114, 379/115, 455/33.1, 455/33.2, 455/54.1, 455/54.2, 455/405, 455/406, 455/408, 455/414, 455/458, 455/459, 455/460, 455/564
• US Class Current: 455/414.1
• CPC Class Codes: H04W 76/10 Connection setup

Abstract

A communications system is designed to monitor voice communications signals for an initial end-to-end communications link which is comprised of a) a wireless segment which connects a wireless network to a wireless end-user apparatus, and b) a second segment which connects a communications end-user device to the wireless network. When the system detects that the wireless segment is inoperative, it inhibits the release of the second segment. Thereafter, the system sets up a subsequent wireless segment which extends from the wireless network to the wireless end-user apparatus. The subsequent wireless segment is then bridged to the second segment to form a new end-to-end communications link to restore connectivity between the wireless end-user apparatus and the communications end-user device.

Claims

1. A method of providing voice communications services to users, the method comprising:

establishing an initial end-to-end communications link comprising;

a) an initial first segment which carries wireless communications signals and which connects a wireless network to a wireless end-user apparatus, and

b) a second segment which connects a communications end-user device to said wireless network;

in response to detecting a signal indicating that the initial first segment of the link has been disconnected, inhibiting release of the second segment;

setting up a subsequent first segment extending from said wireless network to said wireless end-user apparatus;

establishing a new end-to-end communications link comprising;

of the second segment and said subsequent first segment; and

adjusting an amount of time recorded for usage of the voice communication services to compensate for delays in establishing the new end-to-end communication link.

2. The method of claim 1 wherein said inhibiting step includes:

notifying a user of the communications end-user device of an inoperative condition of said initial first segment.

3. The method of claim 1 wherein said inhibiting step comprises:

connecting the second segment to a voice response unit; and

delivering an announcement to a user of the communications end-user device to invite that user to refrain from releasing the second segment.

4. The method of claim 1 or 3 further comprising:

bridging the second segment to the subsequent first segment in response to a signal from the wireless end-user apparatus indicative of readiness for the wireless end-user apparatus to receive communications signals.

5. The method of claim 1 wherein said second segment also carries wireless communications signals.

6. The method of claim 1 further including:

monitoring supervisory audio tones superimposed on said wireless communications signals carried on said initial first segment to and from said wireless end-user apparatus; and

ascertaining within said wireless network that said initial first segment of said first end-to-end communication link is inoperative when at least one reply to said supervisory audio tones is not received within a predetermined time period.

7. The method of claim 1 further:

tearing down said initial first segment before establishing said new end-to-end communications link.

8. The method of claim 1 wherein said subsequent first segment is connected to a cell site from which said initial first segment was disconnected.

9. The method of claim 1 wherein said subsequent first segment is connected to a cell site which is different from the cell site to which said initial first segment was connected.

10. A method of completing a call over a wireless communications network comprising:

establishing a connection between a first communicating party and a second communicating party, the connection including;

a) a first segment extending from the first party'"'"'s end-user device to the wireless communications network, and

b) a second segment which carries wireless communication signals and which extends from the wireless communications network to a wireless end-user apparatus serving the second party;

detecting a loss of carrier signal on the second segment of the connection;

delivering an announcement to the first party informing the first party of the loss of carrier signal and inviting the first party to keep the first segment operative;

re-establishing the second segment to the second party;

bridging the first segment to the re-established second segment to re-establish the connection between the first and second parties; and

adjusting an amount of time recorded for usage of the wireless communication services to compensate for delays in re-establishing the second segment to the second party.

11. The method of claim 10 wherein said first segment is a wireless link which carries wireless communications signals, and said end-user device is a wireless end-user device.

12. The method of claim 10 wherein said detecting step comprises:

transmitting supervisory messages from said wireless communications network to said wireless end-user apparatus; and

in response to a failure of the wireless end-user apparatus to respond within a predetermined time period to the supervisory messages after repeated transmissions of said supervisory messages, releasing said second segment.

13. In a communications network, a method of providing wireless communications service to at least one wireless user comprising:

establishing a connection from the at least one wireless user to a communications service user, the connection including a first section and a wireless section;

detecting a loss of carrier signal on the wireless section of the connection;

inhibiting release of the first section of the connection;

attempting to restore the wireless section of the connection, the attempt to restore continuing until a timer expires; and

in response to signals indicating that repeated attempts to restore were unsuccessful;

informing the communications service user of the loss of carrier signal and collecting information including a telephone number at which the communications service user can be contacted by the at least one wireless user within a predetermined time interval,

releasing the first section of the connection,

establishing a first communications path extending from the communications network to the at least one wireless user within said time interval,

establishing a second communications path extending from the communications network to the communications service user using said telephone number, and

bridging the first communications path and the second communications path to re-establish communications between the at least one wireless user and the communications service user.

14. A wireless communications system comprising:

a transceiver which detects a signal indicative of a loss of carrier signal on a first link which carries wireless communications signals to and from a wireless user, said first link being part of an end-to-end communications path which includes a second link serving a communications service user with whom said wireless user was communicating prior to said loss of carrier signal;

means responsive to said detection of loss of carrier signal for restraining release of said second link;

means for establishing a third link capable of carrying wireless communications signals to and from said wireless user;

means for bridging said third link to said second link to re-establish an end-to-end communications path between said wireless user and said communications service user; and

means for adjusting an amount of time recorded for usage of said end-to-end communications path to compensate for delays associated with;

a) establishing said third link, and

b) bridging said third link to said second link.

15. The apparatus of claim 14 wherein said restraining means comprise:

means for delivering an announcement to said communications service user to inform said communications service user of said loss of carrier signal and to advise said communications service user to keep said second link operative pending said re-establishment of said end-to-end communications path.

16. A method of collecting billing data for a telephone call, said method comprising:

responsive to signals indicating that an end-to-end connection is established between a wireless end-user apparatus and a communication end-user device, recording charges for usage of said end-to-end connection which includes i) a wireless segment coupled to said wireless end-user apparatus and ii) another segment coupled to said communications end-user device;

in response to signals indicative of a loss of carrier signal condition on the wireless segment of the connection, stopping recording of said charges without releasing the other segment of the connection;

resuming recording of charges for usage of said connection from the time following a) restoration of said wireless segment, and b) re-establishment of an end-to-end connection between said wireless end-user apparatus and said communications end-user device; and

in response to signals indicative of termination of the call, stopping recording of said charges for usage of said end-to-end connection.

17. A system of providing voice communications services to users, the system comprising:

means for establishing an initial end-to-end communications link comprising;

a) an initial first segment which carries wireless communications signals and which connects a wireless network to a wireless end-user apparatus, and

b) a second segment which extends from a communications end-user device to said wireless network;

means responsive to detection of a signal indicating that said first segment of the link has been disconnected, for inhibiting release of said second segment;

means for setting up a subsequent first segment from said wireless network to said wireless end-user apparatus;

means for establishing a new end-to-end communications link comprised of the second segment and said subsequent first segment; and

means for adjusting an amount of time recorded for usage of said voice communication service to compensate for delays in establishing the new end-to-end communications link.

18. The system of claim 17 wherein said inhibiting means includes:

means for notifying a user of the communications end-user device that said initial first segment has been disconnected.

19. The system of claim 17 wherein said inhibiting means further includes:

means for connecting the second segment of the initial end-to-end communications link to a voice response unit; and

means for delivering an announcement to a user of the communications end-user device to invite that user to refrain from releasing the second segment.

20. The system of claim 17 or 19 wherein said means for establishing a new end-to-end communications link includes:

means responsive to a signal from the wireless end-user apparatus indicative of readiness for the wireless end-user apparatus to receive communications signals for bridging the second segment to the subsequent first segment.

21. The system of claim 17 wherein said second segment of the initial end-to-end communications link also carries wireless communications signals.

22. The system of claim 17 further including:

means for monitoring supervisory audio tones superimposed on said wireless communications signals carried on said initial first segment to and from said wireless end-user apparatus;

means for ascertaining within said wireless network that said initial first segment is inoperative when at least one reply to said supervisory audio tones is not received within a predetermined time period.

23. In a communications network, a system of providing wireless communications services to at least one wireless user, the system comprising:

means for establishing a connection from the at least one wireless user to a communications service user, the connection including a first section and a wireless section;

means for detecting a loss of carrier signal on the wireless section of the connection;

means for inhibiting release of the first section of the connection;

means for attempting to restore the wireless section of the connection, the attempt to restore continuing until a timer expires;

means, responsive to signals indicating that repeated attempts to restore were unsuccessful, for informing the communications service user of the loss of carrier signal and for collecting information including a telephone number at which the communications service user can be contacted by the at least one wireless user within a predetermined time interval, the means for inhibiting release of the first section releasing the first section after collecting the information;

means for establishing a first communications path extending from the communications network to the at least one wireless user within said time interval;

means for establishing a second communications path using said addressing information, the second communications path extending from said communications network to the communications service user; and

means for bridging the first communications path and the second communications path to re-establish communication between the at least one wireless user and the communications service user.