Mechanism for performing energy-based routing in wireless networks
First Claim
1. A communications node in a network including a plurality of nodes, said communications node including a transceiver to transmit and receive messages and having at least one communications link with a first node of the plurality of nodes, said communications node comprising:
- an electronic memory circuit having network information stored therein; and
an electronic processor circuit which (i) determines path loss information across the at least one communications link by evaluating power data, including a received signal strength indication (RSSI), corresponding to a message received from the first node, the evaluating including subtracting the RSSI from a predetermined maximum powers;
(ii) distributes the path loss information to the network; and
(iii) routes messages to the network based on path loss information.
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Accused Products
Abstract
A method is provided to operate a communications node (2) in a network including a plurality of nodes. The communications node (2) includes a transceiver (6) to transmit and receive messages. The communications node (2) has at least one communications link with a first node of the plurality of nodes. The method includes the steps of: (i) determining path loss information across the at least one communications link by evaluating power data corresponding to a received signal from the first node; (ii) distributing the path loss information to the network; and (iii) routing messages to the network based on path loss information.
101 Citations
23 Claims
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1. A communications node in a network including a plurality of nodes, said communications node including a transceiver to transmit and receive messages and having at least one communications link with a first node of the plurality of nodes, said communications node comprising:
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an electronic memory circuit having network information stored therein; and an electronic processor circuit which (i) determines path loss information across the at least one communications link by evaluating power data, including a received signal strength indication (RSSI), corresponding to a message received from the first node, the evaluating including subtracting the RSSI from a predetermined maximum powers;
(ii) distributes the path loss information to the network; and
(iii) routes messages to the network based on path loss information. - View Dependent Claims (2)
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3. A communications node in a network including a plurality of nodes, said communications node including a transceiver to transmit and receive messages and having at least one communications link with a first node of the plurality of nodes, said communications node comprising:
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an electronic memory circuit having network information, including trace records, stored therein; and an electronic processor circuit which (i) determines path loss information across the at least one communications link by evaluating power data corresponding to a message received from the first node;
(ii) distributes the path loss information to the network; and
(iii) routes messages to the network based on path loss information. - View Dependent Claims (4, 5, 6)
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7. A method of operating a communications node in a network including a plurality of nodes, the communications node including a transceiver to transmit and receive messages, the communications node having at least one communications link with a first node of the plurality of nodes, said method comprising the steps of:
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determining path loss information across the at least one communications link by evaluating power data, including a received signal strength indication (RSSI), corresponding to a received signal from the first node, wherein the path loss is determined by subtracting the RSSI from a predetermined maximum power; distributing the oath loss information to the network; and routing messages to the network based on oath loss information. - View Dependent Claims (8)
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9. A method of operating a communications router in an ad-hoc wireless network including a plurality of routers, the method comprising the steps of:
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obtaining a received signal strength indicator (RSSI) for a message received from a first router of the plurality of routers; determining a power level requirement for a message transmission between the communications router and the first router by subtracting the RSSI from a transmission power level of the first router; and distributing the power level requirement to at least some of the routers in the network. - View Dependent Claims (10, 11, 12)
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13. A method of estimating instantaneous minimum transmission power to close a link in a wireless network between a first node and a second node of a plurality of communication nodes with each node including transmitting means and receiving means, said method comprising the steps of:
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monitoring by the first node, transmission signals from at least the second node in the network; filtering energy data corresponding to the transmission signal with a linear predictive filter; and outputting from the linear predictive filter a signal corresponding to a transmission energy requirement. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A communications node for estimating instantaneous minimum transmission power to close a link in a wireless network between said communications node and a first node of a plurality of communication nodes with each node including transmitting means and receiving means, said apparatus comprising:
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means for monitoring transmission signals from at least the first node in the network; and means for filtering energy data corresponding to the transmission signal, and for outputting a signal corresponding to a transmission energy requirement. - View Dependent Claims (22, 23)
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Specification