Cellular-based communications system and method of using same
First Claim
Patent Images
1. A method of transmitting data, comprising:
- receiving data and control information generated from an interface according to a physical layer protocol, the interface being coupled to a data terminal equipment;
encapsulating the data and control information in a wireless carrier signal; and
transmitting the wireless carrier signal to a data circuit-terminating equipment, wherein the data circuit-terminating equipment operates according to the physical layer protocol.
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Abstract
An apparatus and method for transmitting serial digital data across wireless modems is disclosed. In one embodiment, data is collected by a remote monitoring device and transmitted to a first Cellular Digital Packet Data (“CDPD”) modem via one or more RS232 interfaces. The applications program in the first CDPD modem transmits a signal to a second CDPD modem initiating communications. The applications program in the second CDPD modem returns a signal, indicating the status of the interface. Data transmission is initiated when the status of both interfaces is established.
20 Citations
27 Claims
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1. A method of transmitting data, comprising:
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receiving data and control information generated from an interface according to a physical layer protocol, the interface being coupled to a data terminal equipment; encapsulating the data and control information in a wireless carrier signal; and transmitting the wireless carrier signal to a data circuit-terminating equipment, wherein the data circuit-terminating equipment operates according to the physical layer protocol. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of transmitting data, comprising:
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receiving a carrier signal encapsulating data and a plurality of control signals from a data circuit-terminating equipment, wherein the data and a plurality of control signals are generated according to a physical layer protocol; and outputting the data and the control signals to an interface coupled to data terminal equipment configured to operate according to the physical layer protocol. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A device for transmitting data, comprising:
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an interface configured to receive data and control information from a data terminal equipment according to a physical layer protocol; a processor configured to encapsulate the data and control information in a wireless carrier signal; and an air interface configured to transmit the wireless carrier signal to a data circuit-terminating equipment, wherein the data circuit-terminating equipment operates according to the physical layer protocol. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A device of transmitting data, comprising:
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an air interface configured to receive a carrier signal encapsulating data and a plurality of control signals from a data circuit-terminating equipment, wherein the data and a plurality of control signals are generated according to a physical layer protocol; a processor configured to output the data and the control signals; and an interface coupled to a data terminal equipment that is configured to operate according to the physical layer protocol, the interface forwarding the data and the control signals to the data terminal equipment. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A method of transmitting data, comprising:
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retrieving data and control information from a remote device and transmitting the retrieved data and control information to a first Cellular Digital Packet Data (CDPD) modem via a first RS232 interface; transmitting the retrieved data and control information from the first CDPD modem, via cellular radio, to a second CDPD modem; and transmitting the retrieved data and control information from the second CDPD modem, via a second RS232 interface, to a computing device.
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Specification