US5913166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for providing a call hand-off for a mobile station from a land-line supported private base station to a cellular base station operating in a cellular system
Assignee: Nokia of America Corp
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Filing: 1995-12-29
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Granted: 1999-06-15
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Expires: 2015-12-29
Abstract
Abstract A private wireless system is configured for providing a call hand-off capability for a mobile station communicating with a private base station operating in the wireless system. The call in the wireless system is handed off to the public cellular system whenever the mobile station is moved near the fringe of the coverage area provided by the private base station. Once the hand-off is initiated in the private base station, a process is executed in which the private base station and a local exchange carrier cooperatively switch an active call from an existing wireless communications path established between the private base station and the mobile station to a newly created wireless communications path established between the mobile station and a public base station in the cellular system.
Inventors
- 👤 Anthony Buttitta
- 👤 Karen L. Hilton
- 👤 Muzibul H. Khan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:25
CPC Classifications
H; H04; H04W; H04W36/00; H04W36/0005; H04W36/0055; H04W36/0066; H04W36/34; H04W36/36; H04W36/365; H04W84/00; H04W84/02; H04W84/04; H04W84/042; H04W84/045
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
149 words
A private wireless system arranged for providing a call hand-off for a mobile station operable in said wireless system for communicating with a remotely located telephone station, the system comprising: a private base station for providing wireless communications with said mobile station; means for switching telephone communications from a first communication path to a second communication path for maintaining communications between the mobile station and the remote telephone station, said first communication path including a telephone subscriber line connected to said private base station and a first wireless communication path established between said mobile station and said private base station, and said second communication path including a wireless communication path established between said mobile station and a public base station; and said private base station initiates said call hand-off by sending a switch-hook flash to the means for switching telephone communications and a deregistration message to the mobile station.
Claim 2
Dependent Claim
149 words
A private wireless system arranged for providing a call hand-off for a mobile station operable in said wireless system for communicating with a remotely located telephone station, the system comprising: a private base station for providing wireless communications with said mobile station; means for switching telephone communications from a first communication path to a second communication path for maintaining communications between the mobile station and the remote telephone station, said first communication path including a telephone subscriber line connected to said private base station and a first wireless communication path established between said mobile station and said private base station, and said second communication path including a wireless communication path established between said mobile station and a public base station; and said private base station initiates said call hand-off by sending a switch-hook flash to the means for switching telephone communications and a deregistration message to the mobile station.
Claim 3
Dependent Claim
22 words
The private wireless system of claim 1 wherein said switching means includes a local exchange carrier switch connected to said subscriber line.
Claim 4
Dependent Claim
44 words
The private wireless system of claim 2 wherein said local exchange carrier switch, responsive to said switch-hook flash, executes a third party feature by placing an other party to the active call on hold and returning a dial tone to the private base station.
Claim 5
Dependent Claim
24 words
The private wireless system of claim 3 wherein said local exchange carrier switch includes a call park feature used in executing said call hand-off.
Claim 6
Dependent Claim
39 words
The private wireless system of claim 3 wherein said mobile station, responsive to receipt of said deregistration message, ceases communicating over said first wireless communication path and begins communicating in a cellular network over said second wireless communication path.
Claim 7
Dependent Claim
53 words
The private wireless system of claim 5 wherein said private base station sends a call park feature code to the local exchange carrier switch for activating said call park feature, and the exchange carrier switch, responsive to receipt of said code, places the other party to the active call in a parked state.
Claim 8
Dependent Claim
39 words
The private wireless system of claim 6 wherein said mobile station dials a call feature access number for establishing a connection over said second communication path, said cellular network routing said access number to the local exchange carrier switch.
Claim 9
Dependent Claim
62 words
The private wireless system of claim 7 wherein said local exchange carrier switch, responsive to receipt of said access number, connects said other party to the active call and the incoming call received over said second communication path together for permitting conversation, said second communication path further including a communication line between the public base station and the local exchange carrier switch.
Claim 10
Dependent Claim
24 words
The private wireless system of claim 3 wherein said local exchange carrier switch includes a conference bridge feature used in executing said call hand-off.
Claim 11
Dependent Claim
38 words
The private wireless system of claim 'wherein said mobile station , responsive to receipt of said deregistration message, ceases communicating over said first wireless communication path and registers in a cellular network over said second wireless communication path.
Claim 12
Dependent Claim
39 words
The private wireless system of claim 10 wherein said private base station sends an identification number for the mobile station to the local exchange carrier switch for routing an outgoing call through the cellular network to said mobile station.
Claim 13
Dependent Claim
31 words
The private wireless system of claim 11 wherein said local exchange carrier switch, upon receipt of the identification number, routes the outgoing call to the mobile station using said identification number.
Claim 14
Dependent Claim
42 words
The private wireless system of claim 12 wherein said cellular network routes the outgoing call to the mobile station and generates a page signal to said mobile station, said mobile station responding to said page signal and establishing said second communication path.
Claim 15
Dependent Claim
64 words
The private wireless system of claim 13 wherein said private base station generates a second switch-hook flash for activating said conference bridge feature in said local exchange carrier switch for bridging said other party and said mobile station together over said second communication path, said second communication path further including a communication line between the public base station and the local exchange carrier switch.
Claim 16
Dependent Claim
160 words
A private wireless system arranged for providing a call hand-off for a mobile station operable in said wireless system for communicating with a remotely located telephone station, the system comprising: a private base station for providing wireless communications with said mobile station; and means for switching telephone communications from a first communication path to a second communication path for maintaining communications between the mobile station and the remote telephone station, said first communication path including a telephone subscriber line connected to said private base station and a first wireless communication path established between said mobile station and said private base station, and said second communication path including a wireless communication path established between said mobile station and a public base station, and said switching means further include a service control point in an advanced intelligent network, said service control point being operably connected to a local exchange carrier switch and the cellular network and used to execute said call hand-off.
Claim 17
Dependent Claim
160 words
A private wireless system arranged for providing a call hand-off for a mobile station operable in said wireless system for communicating with a remotely located telephone station, the system comprising: a private base station for providing wireless communications with said mobile station; and means for switching telephone communications from a first communication path to a second communication path for maintaining communications between the mobile station and the remote telephone station, said first communication path including a telephone subscriber line connected to said private base station and a first wireless communication path established between said mobile station and said private base station, and said second communication path including a wireless communication path established between said mobile station and a public base station, and said switching means further include a service control point in an advanced intelligent network, said service control point being operably connected to a local exchange carrier switch and the cellular network and used to execute said call hand-off.
Claim 18
Dependent Claim
38 words
The private wireless system of claim 15 wherein said private base station sends an identification number for the mobile station to the service control point for routing an outgoing call through the cellular network to said mobile station.
Claim 19
Dependent Claim
30 words
The private wireless system of claim 16 wherein said service control point, upon receipt of the identification number, routes the outgoing call to the cellular network using said identification number.
Claim 20
Dependent Claim
42 words
The private wireless system of claim 17 wherein said cellular network routes the outgoing call to the mobile station and generates a page signal to said mobile station, said mobile station responding to the page signal and establishing said second communication path.
Claim 21
Dependent Claim
57 words
The private wireless system of claim 18 wherein said service control point connects said other party in said local exchange carrier switch and said mobile station together over said second communication path, said second communication path further including a communication line between the public base station and the local exchange carrier switch via the service control point.
Claim 22
Independent Claim
143 words
A method of providing a call hand-off for a mobile station operable in a private wireless system for communicating with a remotely located telephone station, the method comprising the steps of: providing wireless communications in a private base station for communicating with said mobile station; switching telephone communications from a first communication path to a second communication path for maintaining communications between the mobile station and the remote telephone station, said first communication path including a telephone subscriber line connected to said private base station and a first wireless communication path established between said mobile station and said private base station, and said second communication path including a wireless communication path established between said mobile station and a public base station; and initiating said call hand-off by sending a switch-hook flash to a switching means and a deregistration message to the mobile station.
Claim 23
Independent Claim
143 words
A method of providing a call hand-off for a mobile station operable in a private wireless system for communicating with a remotely located telephone station, the method comprising the steps of: providing wireless communications in a private base station for communicating with said mobile station; switching telephone communications from a first communication path to a second communication path for maintaining communications between the mobile station and the remote telephone station, said first communication path including a telephone subscriber line connected to said private base station and a first wireless communication path established between said mobile station and said private base station, and said second communication path including a wireless communication path established between said mobile station and a public base station; and initiating said call hand-off by sending a switch-hook flash to a switching means and a deregistration message to the mobile station.
Claim 24
Dependent Claim
24 words
The method of claim 20 wherein said switching step includes the step of providing a local exchange carrier switch connected to said subscriber line.
Claim 25
Dependent Claim
19 words
The method of claim 21 wherein said remotely located telephone station is connected to said local exchange carrier switch.
Claim 26
Dependent Claim
17 words
The method of claim 21 wherein said local exchange carrier switch includes a third party call feature.
Claim 27
Dependent Claim
16 words
The method of claim 23 wherein said local exchange carrier switch includes a call park feature.
Claim 28
Dependent Claim
16 words
The method of claim 23 wherein said local exchange carrier switch includes a conference bridge feature.
Claim 29
Dependent Claim
24 words
The method of claim 20 wherein said switching step further include the step of providing a service control point in an advanced intelligent network.
Claim 30
Dependent Claim
165 words
In a private wireless system, a private base station arranged for providing a call hand-off for a mobile station operable in said wireless system for communicating with a remotely located telephone station, the system including a local exchange carrier switch for switching telephone communications from a first communication path to a second communication path for maintaining communications between the mobile station and the remote telephone station, said first communication path including both a telephone subscriber line connected between said private base station and said local exchange carrier switch and a first wireless communication path established between said mobile station and said private base station, and said second communication path including a wireless communication path established between said mobile station and a public base station, the private base station comprising: means for providing wireless communications with said mobile station; and means for initiating said call hand-off by sending both a switch-hook flash to the local exchange carrier switch and a deregistration message to the mobile station.
Claim 31
Dependent Claim
165 words
In a private wireless system, a private base station arranged for providing a call hand-off for a mobile station operable in said wireless system for communicating with a remotely located telephone station, the system including a local exchange carrier switch for switching telephone communications from a first communication path to a second communication path for maintaining communications between the mobile station and the remote telephone station, said first communication path including both a telephone subscriber line connected between said private base station and said local exchange carrier switch and a first wireless communication path established between said mobile station and said private base station, and said second communication path including a wireless communication path established between said mobile station and a public base station, the private base station comprising: means for providing wireless communications with said mobile station; and means for initiating said call hand-off by sending both a switch-hook flash to the local exchange carrier switch and a deregistration message to the mobile station.
Claim 32
Dependent Claim
32 words
The private base station of claim 27 including means for sending a call park feature code to the local exchange carrier switch for activating a call park feature available at said switch.
Claim 33
Dependent Claim
48 words
The private base station of claim 27 including means for sending an identification number for the mobile station to a service control point in an advanced intelligent network for routing an outgoing call through the local exchange carrier switch and the advanced intelligent network to said mobile station.
References Cited (Backward Citations)
US5127042A
Cited
US5463674A
Cited
US5101501A
Cited
US5260988A
Cited
US5664005A
Cited
US5442680A
Cited
US5566236A
Cited
US5664007A
Cited
US5745852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-06-14 | 2002-12-14 | 2003-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-06-14 | 2006-12-14 | 2007-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-06-14 | 2010-12-14 | 2011-06-15 | $7700.00 | Window Closed / Lapsed |