METHOD AND SYSTEM FOR WIRELESS MULTI-HOPPING COMMUNICATION
First Claim
1. A wireless multi-hopping communication system comprising:
- an access point;
a source node in communication with the access point, and configured to transmit data on at least one of a plurality of frequencies; and
a plurality of nodes in communication with the access point and the source node, and configured to transmit the data on at least one of the plurality of frequencies, wherein the source node and the plurality of nodes are adapted to determine a routing path from the source node to the access point utilizing at least one intermediate node of the plurality of nodes and a transmitting frequency of the plurality of frequencies while reducing interference to a primary user of the transmitting frequency.
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Accused Products
Abstract
A method (400) and system (100) for a wireless multi-hopping communication system is provided, wherein the system (100) includes an access point (102), a source node (CR1), and a plurality of nodes. The source node (CR1) is in communication with the access point (102), and configured to transmit a signal on at least one of a plurality of frequencies. The plurality of nodes are in communication with the access point (102) and the source node (CR1), and configured to transmit a signal on at least one of the plurality of frequencies, wherein the source node (CR1) and the plurality of nodes are adapted to determine a routing path utilizing at least one intermediate node (CR2) of the plurality of nodes and a transmitting frequency of the plurality of frequencies while reducing interference to a primary user of the transmitting frequency.
50 Citations
20 Claims
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1. A wireless multi-hopping communication system comprising:
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an access point; a source node in communication with the access point, and configured to transmit data on at least one of a plurality of frequencies; and a plurality of nodes in communication with the access point and the source node, and configured to transmit the data on at least one of the plurality of frequencies, wherein the source node and the plurality of nodes are adapted to determine a routing path from the source node to the access point utilizing at least one intermediate node of the plurality of nodes and a transmitting frequency of the plurality of frequencies while reducing interference to a primary user of the transmitting frequency. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of communicating between a plurality of nodes and an access point to reduce interference to a primary user transmitting on a primary channel, the method comprising the steps of:
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transmitting a list of potential secondary channels from the access point to the plurality of nodes; providing the identity of the plurality of nodes to a source node for determining its adjacent nodes; defining a target diversity level based upon at least one operating condition of the source node; choosing a set of at least one node from the list of the plurality of nodes based upon which of the at least one node is within a distance of the source node; sorting the at least one node of the chosen set based upon a ranking of the at least one node that is a function of at least one operating condition; and determining a routing path utilizing at least one sorted node, wherein the routing path is a function of the sorted set, such that at least one node with a greater ranking in the sorted set routes the communication from the source node. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of communicating between a plurality of nodes and an access point to reduce interference to a primary user of a primary transmitting channel, the method comprising the steps of:
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a) transmitting a list of potential secondary channels from the access point to the plurality of nodes; b) providing the identity of each the plurality of nodes to a source node for determining adjacent nodes; c) determining a location of the source node and at least a portion of the plurality of nodes d) choosing a set of nodes from the list of the plurality of nodes, such that a pair-wise distance is maximized; e) determining a distance between the chosen set of nodes and the access point; f) determining a transmitting power needed to transmit a signal from the source node to an intermediate node of the plurality of nodes; g) performing spectrum sensing on the secondary channels to cooperatively determine if a primary user is present on the secondary channels; h) computing the sensing reliability of the chosen set of nodes i) sorting the nodes of the chosen set based upon a ranking of the nodes that is a weighted function of the determined distance between any intermediate nodes and the access point, the determined transmitting power, and the sensing reliability of the intermediate nodes; and j) determining a routing path from the source node utilizing at least one of the sorted nodes, wherein the routing path is a function of the sorted set, such that the node with a greater ranking in the sorted set routes the communication from the source node. - View Dependent Claims (17, 18, 19, 20)
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Specification