Dynamic relay assignment for jamming mitigation in wireless networks
First Claim
1. A method of conveying a communication from a transmitting node to a disadvantaged node of a wireless communication network, said disadvantaged node being a node in the network that is subject to localized interference that is present within a jammed region, the method comprising:
- for each of a plurality of candidate nodes in the network, collecting by the candidate node of node quality data of the candidate node, the node quality data including statistics on the communication performance of the candidate node and a measured local noise level of the candidate node;
for each of the plurality of candidate nodes in the network, sharing by the candidate node of the node quality data of the candidate node with at least one other of the plurality of candidate nodes in the network;
for each of the plurality of candidate nodes in the network, determining by the candidate node of a node quality of the candidate node using the node quality data of the candidate node and node quality data received from at least one other of the candidate nodes in the network;
for each of the plurality of candidate nodes in the network, determining a quality level of the candidate node, said quality level being dependent at least in part on a communication reliability of the candidate node and a proximity of the candidate node to the disadvantaged node;
according to the quality levels of the candidate nodes, designating a node from among the plurality of candidate nodes as a relay node; and
relaying by the relay node of the communication between the transmitting node and the disadvantaged node.
1 Assignment
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Accused Products
Abstract
A method for mitigating the effect of a localized jamming attack on a secure, tactical wireless network implements a dynamic relay assignment (“DRA”) approach, whereby nodes are dynamically assigned to relay communications to “disadvantaged” nodes that are subject to the attack, the relay nodes being selected based on their communication reliability and their proximity to the disadvantaged nodes. In embodiments, the nodes share with each other performance statistics and, in embodiments, measured local noise levels. In various embodiments, each node provides data to a “strategy optimizer” which then dynamically makes relay assignments. In Link-16 embodiments support for a “DRA” relay mode is added, and the communication protocol is extended to support the required exchange of communication quality and local noise information via PPLI messages.
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Citations
11 Claims
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1. A method of conveying a communication from a transmitting node to a disadvantaged node of a wireless communication network, said disadvantaged node being a node in the network that is subject to localized interference that is present within a jammed region, the method comprising:
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for each of a plurality of candidate nodes in the network, collecting by the candidate node of node quality data of the candidate node, the node quality data including statistics on the communication performance of the candidate node and a measured local noise level of the candidate node; for each of the plurality of candidate nodes in the network, sharing by the candidate node of the node quality data of the candidate node with at least one other of the plurality of candidate nodes in the network; for each of the plurality of candidate nodes in the network, determining by the candidate node of a node quality of the candidate node using the node quality data of the candidate node and node quality data received from at least one other of the candidate nodes in the network; for each of the plurality of candidate nodes in the network, determining a quality level of the candidate node, said quality level being dependent at least in part on a communication reliability of the candidate node and a proximity of the candidate node to the disadvantaged node; according to the quality levels of the candidate nodes, designating a node from among the plurality of candidate nodes as a relay node; and relaying by the relay node of the communication between the transmitting node and the disadvantaged node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Non-transitory media containing software operable on nodes in a wireless communications network so as to cause a transmitting node of the network to communicate with a disadvantaged node of the network, said disadvantaged node being a node in the network that is subject to localized interference that is present within a jammed region, the software being configured to cause:
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collecting by each of a plurality of candidate nodes in the network of node quality data of the candidate node, the node quality data including statistics on the communication performance of the candidate node and a measured local noise level of the candidate node; sharing by each of the plurality of candidate nodes in the network of the node quality data of the candidate node with at least one other of the plurality of candidate nodes in the network; determining by each of the plurality of candidate nodes in the network of a node quality of the candidate node using the node quality data of the candidate node and node quality data received from at least one other of the candidate nodes in the network; determining for each of the plurality of candidate nodes in the network of a quality level of that candidate node, said quality level being dependent at least in part on a communication reliability of the candidate node and a proximity of the candidate node to the disadvantaged node; designating of a node from among the plurality of candidate nodes as a relay node, the relay node being selected according to the quality levels of the candidate nodes; and relaying by the relay node of a communication between the transmitting node and the disadvantaged node.
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Specification