Robust tactical unattended ground sensor networking
First Claim
1. A surveillance system comprising:
- an unattended sensor havinga detector that generates an electrical signal in response to a physical stimulus proximate to the sensor;
a signal processor adapted to receive the electrical signal from the detector and operable to generate event messages based on the electrical signal;
a transceiver adapted to receive the event messages and operable to send the event messages over a wireless radio link; and
a channel access mechanism operable to negotiate access to the radio link in accordance with an access protocol; and
a radio device having a transceiver operable to send and receive voice data over the radio link; and
a channel access mechanism operable to negotiate access to the radio link in accordance with the same access protocol.
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Accused Products
Abstract
An unattended sensor is provided for use in a surveillance system. The sensor is generally comprised of: a detector that generates an electrical signal in response to a physical stimulus proximate to the sensor; a signal processor adapted to receive the electrical signal from the detector and operable to generate an event message based on the electrical signal; a transceiver operable to send and receive messages over a wireless radio link; and a channel access mechanism operable to negotiate access to the radio link in accordance with an access protocol, where the access protocol is employed by radios and other communication devices in the system.
24 Citations
25 Claims
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1. A surveillance system comprising:
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an unattended sensor having a detector that generates an electrical signal in response to a physical stimulus proximate to the sensor; a signal processor adapted to receive the electrical signal from the detector and operable to generate event messages based on the electrical signal; a transceiver adapted to receive the event messages and operable to send the event messages over a wireless radio link; and a channel access mechanism operable to negotiate access to the radio link in accordance with an access protocol; and a radio device having a transceiver operable to send and receive voice data over the radio link; and
a channel access mechanism operable to negotiate access to the radio link in accordance with the same access protocol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An unattended sensor for use in a surveillance system, comprising:
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a detector that generates an electrical signal in response to a physical stimulus proximate to the sensor; a signal processor adapted to receive the electrical signal from the detector and operable to generate an event message based on the electrical signal; a transceiver operable to send and receive messages over a wireless radio link; and a channel access mechanism adapted to receive event messages from the signal processor and messages from the transceiver, wherein the channel access mechanism is operable to formulate a request to send message to an intended recipient prior to transmitting the event message and operable to transmit the event message upon receipt of a clear to send message from the intended recipient, the channel access mechanism further adapted to receive messages from other nodes in the system indicating that a given node is about to receive a transmission and operable to delay any transmissions from the sensor to the given node. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification