Patent US5802177A successfully refreshed from Google Patents.
US5802177A
Expired / Lapsed
US
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Apparatus for radio local loop system
Assignee: Nokia of America Corp
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Filing: 1996-09-30
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Granted: 1998-09-01
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Expires: 2016-09-30
Abstract
Abstract Apparatus for a radio local loop for a telecommunications system, such as a base station (1) or a subscriber station (2), comprises a first unit (4, 13), which includes call processing and speech transcoding/encryption apparatus (8, 17), and which can be housed in a friendly environment, such as within a telephone exchange or within a subscriber's premises, and a comparatively rugged second unit (3, 14) which includes a modem (11, 22) and radio transceiver (12, 23), and which can be housed, in the case of a base station, at a site remote from the exchange, but central for the subscribers which it is to serve, and in the case of a subscriber station on the outside of the subscriber's premises. The first and second units are linked by a base-band link (5, 15).
Inventors
- 👤 Elizabeth Mary Daniel
- 👤 Malcolm Gordon
- 👤 William Jones
- 👤 Anthony Martin
- 👤 Douglas Roger Pulley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:46
CPC Classifications
H; H04; H04W; H04W84/00; H04W84/02; H04W84/10; H04W84/14; H04M; H04M3/00; H04W88/00; H04W88/08; H04W88/18; H04W88/181
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
78 words
A wireless line transceiver comprising: a central access and transcoding unit comprising: a call processing and speech transcoding/encryption apparatus, and a first back haul interface connected to said call processing and speech transcoding/encryption apparatus; and a central transceiver unit comprising: a multiuser modem, and a radio transceiver connected to said multiuser modem, a second back haul interface connected to said multiuser modem; and a base-band connection between said first back haul interface and said second back haul interface.
Claim 2
Dependent Claim
78 words
A wireless line transceiver comprising: a central access and transcoding unit comprising: a call processing and speech transcoding/encryption apparatus, and a first back haul interface connected to said call processing and speech transcoding/encryption apparatus; and a central transceiver unit comprising: a multiuser modem, and a radio transceiver connected to said multiuser modem, a second back haul interface connected to said multiuser modem; and a base-band connection between said first back haul interface and said second back haul interface.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 wherein said central transceiver unit comprises a local exchange interface for connection to a local exchange.
Claim 4
Dependent Claim
29 words
The apparatus of claim 1 wherein said base-band connection comprises a plurality of timeslots and said multiuser modem maps each of said timeslots into a particular multiple access code.
Claim 5
Dependent Claim
80 words
A network interface unit comprising: an intelligent telephone socket comprising: a call processing and speech transcoding/encryption apparatus, and a subscriber interface connected to said call processing and speech transcoding/encryption apparatus, and a first serial interface connected to call processing and speech transcoding/encryption apparatus; a subscriber transceiver unit comprising: a modem, a radio transceiver connected to said modem, and a second serial interface connected to said modem; and a base-band connection between said first serial interface and said second serial interface.
Claim 6
Dependent Claim
80 words
A network interface unit comprising: an intelligent telephone socket comprising: a call processing and speech transcoding/encryption apparatus, and a subscriber interface connected to said call processing and speech transcoding/encryption apparatus, and a first serial interface connected to call processing and speech transcoding/encryption apparatus; a subscriber transceiver unit comprising: a modem, a radio transceiver connected to said modem, and a second serial interface connected to said modem; and a base-band connection between said first serial interface and said second serial interface.
Claim 7
Dependent Claim
17 words
The apparatus of claim 4 wherein said subscriber interface provides an ISDN line to a subscriber apparatus.
Claim 8
Dependent Claim
20 words
The apparatus of claim 4 wherein said subscriber interface for connection to a subscriber apparatus provides two autonomous telephone lines.
Claim 9
Dependent Claim
29 words
The apparatus of claim 4 wherein said intelligent telephone socket comprises a power supply unit arranged to supply power to said subscriber transceiver unit via a low voltage connection.
Claim 10
Dependent Claim
16 words
The apparatus of claim 4 wherein said subscriber transceiver unit is adapted to be mounted outdoors.
Claim 11
Dependent Claim
15 words
The apparatus of claim 4 wherein said modem is a code division multiple access modem.
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) | 2001-08-31 | 2002-03-02 | 2002-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-31 | 2006-03-02 | 2006-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-31 | 2010-03-02 | 2010-09-01 | $7700.00 | Window Closed / Lapsed |