Patent US4575582A successfully refreshed from Google Patents.
US4575582A
Expired / Lapsed
US
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Mobile radio communications system
Assignee: NEC Corp
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Filing: 1984-10-23
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Granted: 1986-03-11
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Expires: 2004-10-23
Abstract
Abstract A mobile radio communications system for wide area mobile radio communications allows any two remote mobile stations to hold communications by way of a public switching network. A fixed station governing an area in which a calling mobile station is located sends to an exchange its own identification (ID) data and ID data associated with a mobile station which is connected to the fixed station by radio. Based on the two kinds of ID data, a called mobile station sees a telephone number assigned to the calling mobile station and a telephone number assigned to the fixed station which is associated with the calling mobile station.
Inventors
- 👤 Masayuki Makino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:52
CPC Classifications
H; H04; H04W; H04W68/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
208 words
A mobile radio communications system, comprising: a plurality of fixed stations connected to a subscriber's line of a swiching network, a mobile station connectable to any one of said fixed stations by radio, and a transmission base station for paging said mobile station; each of the fixed stations comprising means for sending to an exchange identification data associated with the mobile station and identification data associated with said one fixed station upon origination of a call by the mobile station; the transmission base station comprising means for transmitting to a mobile station to be called a paging signal and the identification data associated with the calling mobile station and the identification data associated with the fixed station; the mobile station comprising means for displaying a call in response to the paging signal from the transmission base station, and means for displaying the calling mobile station represented by the identification data from the transmission base station, the mobile station being constructed to send an answer to the paging from the transmission base station by way of another one of the fixed stations which is connected by radio with the called mobile station, thereby enabling the calling mobile station and the called mobile station to be connected with each other.
Claim 2
Dependent Claim
208 words
A mobile radio communications system, comprising: a plurality of fixed stations connected to a subscriber's line of a swiching network, a mobile station connectable to any one of said fixed stations by radio, and a transmission base station for paging said mobile station; each of the fixed stations comprising means for sending to an exchange identification data associated with the mobile station and identification data associated with said one fixed station upon origination of a call by the mobile station; the transmission base station comprising means for transmitting to a mobile station to be called a paging signal and the identification data associated with the calling mobile station and the identification data associated with the fixed station; the mobile station comprising means for displaying a call in response to the paging signal from the transmission base station, and means for displaying the calling mobile station represented by the identification data from the transmission base station, the mobile station being constructed to send an answer to the paging from the transmission base station by way of another one of the fixed stations which is connected by radio with the called mobile station, thereby enabling the calling mobile station and the called mobile station to be connected with each other.
Claim 3
Dependent Claim
77 words
A mobile radio communications system as claimed in claim 1, wherein the transmission base station further comprises means for sending a disconnect request signal to the fixed station associated with the calling mobile station in response to a call request from the fixed station, and the fixed station further comprises means for disconnecting a line to the transmission base station upon receipt of the disconnect request signal while holding a radio channel with the mobile station connected.
Claim 4
Dependent Claim
48 words
A mobile radio communications system as claimed in claim 1, wherein the mobile station is further constructed to store the identification data associated with the calling mobile station while displaying the identification data, and automatically send a call signal to the calling mobile station through a recall switch.
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) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |