US5526402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio personal communications system and method for initiating communications between a base station and a cellular terminal
Assignee: Ericsson Inc
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Filing: 1995-05-19
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Granted: 1996-06-11
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Expires: 2015-05-19
Abstract
Abstract Transceiver frequency and optionally power level are allocated to a radio personal communications system which includes a base station connected to a wire telephone network and a cellular terminal operating within a region of a wide area cellular network to minimize interference between communications over the wide area cellular network and communications between the base station and the cellular terminal. The same cellular terminal may thus be used to communicate over the lower cost wire network when within range of the base station and over the wide area cellular network otherwise. The frequency for communications between the cellular terminal and the base station are optionally assigned by the operator of the wide area cellular network so appropriate frequencies and power levels can be assigned for base stations, to minimize same channel interference with the wide area cellular network.
Inventors
- 👤 Paul W. Dent
- 👤 Jacobus C. Haartsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:41
CPC Classifications
H; H04; H04W; H04W16/00; H04W16/14; H04W16/16; H04W74/00; H04W74/002; H04W74/006; H04W16/24; H04W16/32; H04W28/00; H04W28/16; H04W28/26; H04W84/00; H04W84/02; H04W84/04; H04W84/042; H04W84/045; H04W84/10; H04W84/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
181 words
A radio personal communications system for operation within a wide area cellular network, which uses a plurality of frequencies within a spectrum, and within a base region linked to a wire telephone network, which base region overlaps with said cellular network, comprising: a battery powered radio terminal operating within the cellular spectrum; a portable telephone base station located within said base region and connected to said wire telephone network; said telephone base station including activating means for detecting an incoming call on said wire telephone network; said telephone base station further comprising first transceiving means, responsive to said activating means, for initiating transmitting by said base station using a selected one of said frequencies within the spectrum of said wide area cellular network using cellular protocols only when detecting an incoming call from said wire telephone network; and said radio terminal further comprising second transceiving means, for communicating with said wide area cellular network when said radio terminal is not within said base region and for communicating with said first transceiving means when said radio terminal is within said base region.
Claim 2
Dependent Claim
181 words
A radio personal communications system for operation within a wide area cellular network, which uses a plurality of frequencies within a spectrum, and within a base region linked to a wire telephone network, which base region overlaps with said cellular network, comprising: a battery powered radio terminal operating within the cellular spectrum; a portable telephone base station located within said base region and connected to said wire telephone network; said telephone base station including activating means for detecting an incoming call on said wire telephone network; said telephone base station further comprising first transceiving means, responsive to said activating means, for initiating transmitting by said base station using a selected one of said frequencies within the spectrum of said wide area cellular network using cellular protocols only when detecting an incoming call from said wire telephone network; and said radio terminal further comprising second transceiving means, for communicating with said wide area cellular network when said radio terminal is not within said base region and for communicating with said first transceiving means when said radio terminal is within said base region.
Claim 3
Dependent Claim
31 words
A radio personal communications system as in claim 1 wherein said first transceiving means initiates transmission responsive to said activating means only when said radio terminal is within said base region.
References Cited (Backward Citations)
US4039760A
Cited
US4628152A
Cited
EP0188322A2
Cited
EP0225607A2
Cited
EP0268375A2
Cited
US4979205A
Cited
US5127042A
Cited
US4989230A
Cited
US5034993A
Cited
US4953198A
Cited
US5040238A
Cited
US5091942A
Cited
EP0497490A2
Cited
US5357559A
Cited
US5280630A
Cited
WO1993016534A1
Cited
US5260988A
Cited
US5355374A
Cited
US5422930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-06-11 | 1999-12-11 | 2000-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-11 | 2003-12-11 | 2004-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-11 | 2007-12-11 | 2008-06-11 | $7700.00 | Window Closed / Lapsed |