Patent US6192037B1 successfully refreshed from Google Patents.
US6192037B1
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US
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Method for changing communication in a communication system, and communication system therefor
Assignee: Google Technology Holdings LLC
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Filing: 1999-05-20
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Granted: 2001-02-20
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Expires: 2019-05-20
Abstract
Abstract The present invention provides a method for changing communication in a communication system ( 100 ). The communication system ( 100 ) includes a base station subsystem ( 102 ) and a mobile switching center ( 120 ). The base station subsystem ( 102 ) includes a first transcoder ( 108 ) and a second transcoder ( 109 ) connected to the mobile switching center ( 120 ), a first base station controller ( 106 ) connected to a first transcoder ( 108 ), a second base station controller ( 107 ) connected to a second transcoder ( 109 ), and a base transceiver station ( 104 ) connected to the first base station controller ( 106 ) and the second base station controller ( 107 ). A communication is established between a mobile station and the mobile switching center ( 120 ). The communication travels to the mobile switching center ( 120 ) via a first link ( 110 ) that includes the first base station controller ( 106 ). If the first link ( 110 ) is no longer the preferred link, the communication is changed to a second link ( 112 ) that includes the second base station controller ( 107 ).
Inventors
- 👤 Stephen Lee Spear
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:11
CPC Classifications
H; H04; H04W; H04W36/00; H04W36/12
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
180 words
A method for changing connection in a communication system, the communication system including a base station subsystem and a mobile switching center, the base station subsystem including a first base station controller connected to the mobile switching center, a second base station controller connected to the mobile switching center, and a base transceiver station connected to the first base station controller and the second base station controller, the method comprising the steps of: receiving communication from a mobile station at the first base station; establishing a communication between the mobile station and the mobile switching center, the mobile station in communication with a base station subsystem, the communication traveling to the mobile switching center via a first link between the first base station, the first base station controller, and the mobile switching center; determining that a link between the first base station controller and the mobile switching center is no longer a preferred link; and changing the communication to a second link, the second link between the first base station, the second base station controller, and the mobile switching center.
Claim 2
Independent Claim
180 words
A method for changing connection in a communication system, the communication system including a base station subsystem and a mobile switching center, the base station subsystem including a first base station controller connected to the mobile switching center, a second base station controller connected to the mobile switching center, and a base transceiver station connected to the first base station controller and the second base station controller, the method comprising the steps of: receiving communication from a mobile station at the first base station; establishing a communication between the mobile station and the mobile switching center, the mobile station in communication with a base station subsystem, the communication traveling to the mobile switching center via a first link between the first base station, the first base station controller, and the mobile switching center; determining that a link between the first base station controller and the mobile switching center is no longer a preferred link; and changing the communication to a second link, the second link between the first base station, the second base station controller, and the mobile switching center.
Claim 3
Dependent Claim
63 words
The method for changing connection in a communication system in accordance with claim 1 , further comprising the step of sending a handover complete message from the second base station controller to the mobile switching center, the handover complete message alerting the mobile switching center that the communication has been switched from the first base station controller to the second base station controller.
Claim 4
Dependent Claim
31 words
The method for changing connection in a communication system in accordance with claim 1 , wherein it appears to the mobile switching center that the mobile station has been handed off.
Claim 5
Dependent Claim
38 words
The method for changing connection in a communication system in accordance with claim 1 , further comprising the step of alerting the mobile switching center that the communication has changed from the first link to the second link.
Claim 6
Dependent Claim
37 words
The method for changing connection in a communication system in accordance with claim 4 , further comprising the step of, prior to changing the communication to a second link, determining that the first link has gone down.
Claim 7
Dependent Claim
35 words
The method for changing connection in a communication system in accordance with claim 4 , wherein the step of changing the communication to a second link is triggered by an improvement of the network connection.
Claim 8
Dependent Claim
27 words
The method for changing connection in a communication system in accordance with claim 6 , further comprising the step of changing the communication to a third link.
Claim 9
Dependent Claim
38 words
The method for changing connection in a communication system in accordance with claim 7 , wherein the third link comprises a third base station controller distinct from the first base station controller and the second base station controller.
Claim 10
Dependent Claim
48 words
The method for changing connection in a communication system in accordance with claim 4 , wherein the step of alerting the mobile switching center that the communication has changed from the first link to the second link comprises sending a handover complete message to the mobile switching center.
Claim 11
Dependent Claim
133 words
A communication system for changing connection from a first link to a second link, the first link including a first base station controller and the second link including a second base station controller, the communication system comprising: a mobile switching center; a base station subsystem including a first transcoder connected to the mobile switching center, a second transcoder connected to the mobile switching center, the first base station controller connected to the first transcoder, the second base station controller connected to the second transcoder, and a base transceiver station connected to the first base station controller and the second base station controllers; a second base station subsystem coupled to the mobile switching center; a mobile switching center link coupling the first base station subsystem to the second base station subsystem; and a hub.
Claim 12
Dependent Claim
133 words
A communication system for changing connection from a first link to a second link, the first link including a first base station controller and the second link including a second base station controller, the communication system comprising: a mobile switching center; a base station subsystem including a first transcoder connected to the mobile switching center, a second transcoder connected to the mobile switching center, the first base station controller connected to the first transcoder, the second base station controller connected to the second transcoder, and a base transceiver station connected to the first base station controller and the second base station controllers; a second base station subsystem coupled to the mobile switching center; a mobile switching center link coupling the first base station subsystem to the second base station subsystem; and a hub.
Claim 13
Dependent Claim
18 words
A communication system in accordance with claim 10 , wherein the base station subsystem includes a first transcoder.
Claim 14
Dependent Claim
14 words
A communication system in accordance with claim 11 , further comprising a second transcoder.
Claim 15
Dependent Claim
25 words
A communication system in accordance with claim 12 , wherein the first base station controller is connected to the first transcoder and the second transcoder.
Claim 16
Dependent Claim
25 words
A communication system in accordance with claim 12 , wherein the second base station controller is connected to the first transcoder and the second transcoder.
Claim 17
Dependent Claim
27 words
A communication system in accordance with claim 10 , further comprising a common transcoder coupled to the first base station subsystem and the second base station subsystem.
Claim 18
Dependent Claim
26 words
A communication system in accordance with claim 10 , further comprising an inter-BSS link coupling the first base station subsystem and the second base station subsystem.
Claim 19
Dependent Claim
15 words
A communication system in accordance with claim 10 , further comprising a common packet network.
Claim 20
Dependent Claim
29 words
A communication system in accordance with claim 10 , wherein the base transceiver station can communication with both the first base station controller and the second base station controller.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-02-20 | 2004-08-21 | 2005-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-02-20 | 2008-08-21 | 2009-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-02-20 | 2012-08-21 | 2013-02-20 | $7700.00 | Window Closed / Lapsed |