EP0734189A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Radio data communication system using a plurality of radio communication systems
Assignee: Casio Computer Co Ltd
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Filing: 1996-03-19
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Granted: —
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Expires: 2016-03-19
Abstract
Abstract When data (for example, of an electronic mail) is input to a semi-fixed terminal (2) connected to a network (1), the terminal (2) creates a transmission message on the basis of information on the position of a corresponding mobile terminal (20) stored in the semi-fixed terminal and sends this message to the network (1), which sends data at once to the mobile terminal (20) through a predetermined gateway station (7) and base station (9) on the basis of the information on the position of the message.
Inventors
- 👤 Masayasu Miyake
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 23:55
CPC Classifications
H; H04; H04W; H04W84/00; H04W84/02; H04W84/022; H04W88/00; H04W88/02; H04W88/022
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
228 words
A radio communication system which includes a personal computer (2, 3) connected in a semi-fixed manner to an existent network (1) and a radio terminal (20, 21) connected through a relay (7, 8, 9, 10, 11, 12) to the network and corresponding to the personal computer (2, 3) to thereby provide communication between the personal computer (2, 3) and the radio terminal (20, 21), wherein the personal computer (2, 3) calls the radio terminal (20, 21) on the basis of external data input thereto; the radio terminal (20, 21) sends a responsive signal through the relay (7, 8, 9, 10, 11, 12) to the personal computer (20, 21) on the basis of the call from the personal computer (20, 21); the relay (7, 8, 9, 10, 11, 12) sends the network (1) the responsive signal and information on the position of the relay (7, 8, 9, 10, 11, 12) added to the responsive signal; the personal computer (2, 3) sends the network (1) data with the information on the position of the relay (7, 8, 9, 10, 11, 12) added to the responsive signal from the network (1); and the relay (7, 8, 9, 10, 11, 12) sends data to the radio terminal (20, 21) on the basis of the information on the position of the relay (20, 21) attached to the data received from the network (1).
Claim 2
Dependent Claim
39 words
A radio communication system according to Claim 1, wherein the personal computer (2, 3) stores the information on the position of the relay (7, 8, 9, 10, 11, 12) attached to the responsive signal received from the network (1).
Claim 3
Dependent Claim
38 words
A radio communication system according to Claim 2, wherein the personal computer (2, 3) sends the network (1) data with the stored information on the position of the relay (7, 8, 9,10, 11, 12) attached to the data.
Claim 4
Dependent Claim
51 words
A radio communication system according to Claim 1, wherein the radio communication system further comprises a unidirectional radio communication system (5, 6, 13) for calling the radio terminal (20, 21); and the personal computer (2, 3) calls the radio terminal (20, 21) through the unidirectional radio communication system (5, 6, 13).
Claim 5
Dependent Claim
57 words
A radio communication system according to Claim 2, wherein the calling of the radio terminal (20, 21) from the personal computer (2, 3) is performed through the network (1) and the relay (7, 8, 9, 10, 11, 12) on the basis of the stored information on the position of the relay (7, 8, 9, 10, 11, 12).
Claim 6
Dependent Claim
80 words
A radio communication system according to Claim 1, wherein the relay comprises a gateway station (7, 8) connected to the network, and a base station (9, 10, 11, 12) connected to the gateway station (7, 8) for communicating with the radio terminal (20, 21) through a wireless communication channel; and the information on the position of the relay comprises a sign for identifying the gateway station (7, 8) and a sign for identifying the base station (9, 10, 11, 12).
Claim 7
Dependent Claim
112 words
A radio communication system according to Claim 4, wherein the personal computer (2, 3) contains information on an area of the unidirectional radio communication system (5, 6, 13) corresponding to the information on the position of the relay (7, 8, 9, 10, 11, 12); and the personal computer (2, 3) sends the unidirectional radio communication system (5, 6, 13) information on an area corresponding to the information on the position of the relay when the personal computer (2, 3) calls the radio terminal (20, 21), using the unidirectional radio communication system (5, 6, 13); and the unidirectional radio communication system (5, 6, 13) calls the area involved in the sent area information.
Claim 8
Dependent Claim
133 words
A radio communication system according to Claim 4, the unidirectional radio communication system (5, 6, 13) includes a plurality of unidirectional radio communication systems (5, 6, 13); the personal computer (2, 3) contains a plurality of different frequencies one for each of the plurality of unidirectional radio communication systems (5, 6, 13) in correspondence to the information on the position of the relay (7, 8, 9, 10, 11, 12), and sends an employed frequency through the network (1) and the relay (7, 8, 9, 10, 11, 12) to the radio terminal (20, 21) on the basis of the information on the position of the relay (20, 21); and the radio terminal (20, 21) receives a signal from a predetermined unidirectional radio communication system (5, 6, 13) on the basis of the employed frequency.
Claim 9
Dependent Claim
39 words
A radio communication system according to Claim 2, wherein the information on the position of the relay (7, 8, 9, 10, 11, 12) stored in the personal computer (2, 3) is updated periodically by the radio terminal (20, 21).
Claim 10
Dependent Claim
83 words
A radio communication system according to Claim 1, wherein when the personal computer (2) fails in sending the data to the radio terminal (20) on the basis of the information on the position of the relay (7, 9) fails, the personal computer (2) seeks a relay (7, 10) in the vicinity of the first-mentioned relay (7, 9), and adds the information on the position of the sought relay (7, 10) to the data and sends the resulting data to the network (1) again.
Claim 11
Dependent Claim
109 words
A radio communication system according to Claim 1, wherein when the radio terminal (20) sends data to a different radio terminal (21), the former terminal (20) requests a personal computer (3) corresponding to the different radio terminal (21) to send the data; the personal computer (3) corresponding to the different radio terminal (21) receives this request and sends the information on the position of the different radio terminal (21) to the former terminal (20); and the former radio terminal (20) sends the network (1) the data with the information on the position of the different terminal (21) received from the personal computer (3) corresponding to the different terminal (21).
Claim 12
Dependent Claim
137 words
A personal computer in a radio communication system in which the personal computer (2, 3) is connected in a semi-fixed manner to an existent network (1), and a radio terminal (20, 21) is connected through a relay (7, 8, 9, 10, 11, 12) to the network (1), the radio terminal (20, 21) corresponding to the personal computer (2, 3), to thereby provide communication between the personal computer (2, 3) and the radio terminal (20, 21), wherein the personal computer (2, 3) comprises: positional information storage means (35a, 35b) for storing information on the position of the radio terminal (20, 21); and sending means (2, 3) for sending the radio terminal (20, 21) externally input data on the basis of the information on the position of the radio terminal stored in the positional information storage means (35a, 35b).
Claim 13
Dependent Claim
32 words
A personal computer according to Claim 12, wherein the information on the position of the radio terminal (20, 21) comprises a sign for identifying the relay (7, 8, 9, 10, 11, 12).
Claim 14
Dependent Claim
91 words
A personal computer according to Claim 12, comprising; detection means (2, 3) for detecting that the data has been input externally to the personal computer (2, 3); calling means (2, 3) for sending a calling signal to the radio terminal (20, 21) in response to the detection means (2, 3) detecting that data has been input externally; and the sending means (2, 3) sending data to the radio terminal (20, 21) in response to the radio terminal (20, 21) responding to the calling signal sent by the calling means (2, 3).
Claim 15
Dependent Claim
79 words
A personal computer according to Claim 14, wherein the radio communication system comprises a unidirectional communication system (5, 6, 13) for sending a unidirectional message from the personal computer (2, 3) the radio terminal (20, 21); and the calling means (2, 3) sends the calling signal to the radio terminal (20, 21), using a unidirectional communication system (5, 6, 13) which sends a unidirectional message, in response to the detection means (2, 3) detecting that data was input externally.
Claim 16
Dependent Claim
44 words
A personal computer according to Claim 12, wherein the positional information storage means (35a, 35b) comprises positional information updating means for storing position information added at the relay (7, 8, 9, 10, 11, 12) to a signal received from the radio terminal (20, 21).
Claim 17
Dependent Claim
135 words
A relay in a radio communication system in which a personal computer (2, 3) is connected in a semi-fixed manner to an existent network (1), and a radio terminal (20, 21) is connected through a relay (7, 8, 9, 10, 11, 12) to the network (1), the radio terminal (20, 21) corresponding to the personal computer (2, 3), to thereby provide communication between the personal computer (2, 3) and the radio terminal (20, 21), the relay comprising: positional information adding means (7, 8) for adding its relay (7, 8, 9, 10, 11, 12) identifying sign as positional information to data received from the radio terminal (20, 21); and up sending means (7, 8) for sending the network (1) the data to which the position information is added by the positional information adding means (7, 8).
Claim 18
Dependent Claim
40 words
A relay according to Claim 17, comprising down sending means (7, 8, 9, 10, 11, 12) for sending the radio terminal (20, 21) data on the basis of the added positional information of the data received from the network (1).
Claim 19
Dependent Claim
186 words
A radio terminal of a radio communication system in which a personal computer (2, 3) is connected in a semi-fixed manner to an existent network (1), the radio terminal (20, 21) is connected through a relay (7, 8, 9, 10, 11, 12) to the network (1), the radio terminal (20, 21) corresponding to the personal computer (2, 3), and a bidirectional radio communication system provides communication between the personal computer (2, 3) and the radio terminal (20, 21), the radio terminal (20, 21) comprising: receiving means (31) for receiving a radio signal from the relay (7, 8, 9, 10, 11, 12); and sending means (31) for sending a radio signal to the relay (7, 8, 9, 10, 11, 12); wherein when the receiving means (31) receives a calling signal sent through the relay from the personal computer (2, 3), the sending means (31) sending a responsive signal corresponding to the calling signal through the relay (7, 8, 9, 10, 11, 12) to the personal computer (2, 3), the receiving means (31) receiving data sent from the personal computer (2, 3) in response to the responsive signal.
Claim 20
Dependent Claim
23 words
A radio terminal according to Claim 19, wherein said sending means (31) sends a predetermined signal to the personal computer (2, 3) periodically.
Claim 21
Dependent Claim
121 words
A radio terminal according to Claim 19, wherein the radio communication system further comprises a unidirectional communication system (5, 6, 13) which sends a message to the radio terminal (20, 21) from the personal computer (2, 3); and the radio terminal (2, 3) comprises message receiving means (30) for receiving a message through the unidirectional radio communication system, wherein when the message receiving means (30) receives a calling signal from the personal computer (2, 3), the sending means sending (31) the personal computer (2, 3) a responsive signal corresponding to the calling signal through the relay (7, 8, 9, 10, 11, 12), the receiving means (30) receiving data sent from the personal computer (2, 3) in response to the responsive signal.
References Cited (Backward Citations)
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