US6201973B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile communication apparatus
Assignee: NEC Corp
•
Filing: 1998-03-27
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Granted: 2001-03-13
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Expires: 2018-03-27
Abstract
Abstract A mobile communication apparatus having a transceiver is provided with a location calculator which calculates a location of the mobile communication apparatus based on three radio control signals each received from a different base station. A plurality of transmission inhibition areas of data are stored in a memory and the transceiver is controlled depending on whether the location of the mobile communication apparatus is within one of the transmission inhibition areas.
Inventors
- 👤 Satoshi Kowaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:33
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/02; G01S11/10; G01S5/00; G01S5/02; G01S5/10; H; H04; H04W; H04W64/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
A mobile communication apparatus for use in a one-way communication system including a one-way station and a two-way communication system including a plurality of two-way stations, wherein a plurality of two-way communication areas are arranged in cellular form and are overlapped with a one-way communication area, the mobile communication apparatus comprising: a transceiver for the two-way communication system; a receiver for the one-way communication system; a location calculator for calculating a location of the mobile communication apparatus based on three radio control signals received from the one-way station and two adjacent two-way stations, respectively; a storage for storing a plurality of transmission inhibition areas of data; and a controller for controlling the transceiver depending on whether the location of the mobile communication apparatus is within one of the transmission inhibition areas.
Claim 2
Dependent Claim
131 words
A mobile communication apparatus for use in a one-way communication system including a one-way station and a two-way communication system including a plurality of two-way stations, wherein a plurality of two-way communication areas are arranged in cellular form and are overlapped with a one-way communication area, the mobile communication apparatus comprising: a transceiver for the two-way communication system; a receiver for the one-way communication system; a location calculator for calculating a location of the mobile communication apparatus based on three radio control signals received from the one-way station and two adjacent two-way stations, respectively; a storage for storing a plurality of transmission inhibition areas of data; and a controller for controlling the transceiver depending on whether the location of the mobile communication apparatus is within one of the transmission inhibition areas.
Claim 3
Dependent Claim
111 words
The mobile communication apparatus according to claim 1 , wherein the location calculator comprises: a detector for detecting reception time of a radio control signal received from each of the one-way station and two adjacent two-way stations, the radio control signal conveying transmission time information; a distance calculator for calculating a distance between the mobile communication apparatus and each of the one-way station and two adjacent two-way stations based on time elapsed between transmission and reception of the radio control signal obtained from the reception time and the transmission time; and a location determiner for determining the location of the mobile communication apparatus from three distances calculated by the distance calculator.
Claim 4
Dependent Claim
24 words
The mobile communication apparatus according to claim 1 , wherein the one-way station and the two-way stations base stations transmit radio control signals synchronously.
Claim 5
Dependent Claim
32 words
The mobile communication apparatus according to claim 1 , wherein each of the three radio control signals convoys location information of the corresponding one of the three stations and transmission time information.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-03-12 | 2004-09-11 | 2005-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-03-12 | 2008-09-11 | 2009-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-03-12 | 2012-09-11 | 2013-03-13 | $7700.00 | Window Closed / Lapsed |