Hierarchical mobile ad-hoc network and methods for performing reactive routing therein using ad-hoc on-demand distance vector routing (AODV)
DCFirst Claim
1. A method for sending data in a wireless ad-hoc network comprising a plurality of nodes grouped into clusters of nodes and a plurality of wireless links connecting the plurality of nodes, each cluster having a designated cluster leader node, the method comprising:
- sending a cluster-level route request from a source node of a source cluster to a cluster leader node of the source cluster;
determining a cluster-level route between the source cluster and a destination cluster comprising a destination node responsive to the cluster-level route request and using a plurality of the cluster leader nodes;
performing reactive route discovery to determine a node-level route from the source node to the destination node along the cluster-level route, each node along the node-level route storing an address of a next node along the node-level route responsive to the reactive route discovery; and
transferring data from the source node to the destination node via the node-level route based upon the addresses of each next node along the node-level route.
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Abstract
A method is provided for sending data in a wireless ad-hoc network including a plurality of nodes grouped into clusters of nodes and a plurality of wireless links connecting the plurality of nodes, where each cluster has a designated cluster leader node. The method may include sending a cluster-level route request from a source node of a source cluster to a cluster leader node of the source cluster, and determining a cluster-level route between the source cluster and a destination cluster including a destination node responsive to the cluster-level route request and using a plurality of the cluster leader nodes. Further, a node-level route may be determined from the source node to the destination node along the cluster-level route, and each node along the node-level route may store an address of a next node along the node-level route. Additionally, the data may be transferred via the node-level route based upon the stored addresses.
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Citations
35 Claims
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1. A method for sending data in a wireless ad-hoc network comprising a plurality of nodes grouped into clusters of nodes and a plurality of wireless links connecting the plurality of nodes, each cluster having a designated cluster leader node, the method comprising:
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sending a cluster-level route request from a source node of a source cluster to a cluster leader node of the source cluster;
determining a cluster-level route between the source cluster and a destination cluster comprising a destination node responsive to the cluster-level route request and using a plurality of the cluster leader nodes;
performing reactive route discovery to determine a node-level route from the source node to the destination node along the cluster-level route, each node along the node-level route storing an address of a next node along the node-level route responsive to the reactive route discovery; and
transferring data from the source node to the destination node via the node-level route based upon the addresses of each next node along the node-level route. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
determining designated communication links between the cluster leader nodes;
sending a cluster leader node route request from the cluster leader node of the source cluster to the remaining cluster leaders via the designated communication links; and
returning a cluster leader node route reply from the cluster leader node of the destination cluster to the cluster leader node of the source cluster along a delivery route of the cluster leader node route request.
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9. The method of claim 8 wherein at least one of the designated communications links comprises a node that is not a cluster leader node.
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10. The method of claim 8 wherein each cluster leader node stores identities of adjacent cluster leader nodes;
- and wherein sending the cluster leader node route request comprises sending the cluster leader node route request from each cluster leader node to its adjacent cluster leader nodes.
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11. The method of claim 10 further comprising periodically polling the adjacent cluster leader nodes to maintain current addresses therefor.
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12. The method of claim 8 wherein the delivery route comprises a least number of cluster leader nodes between the cluster leader nodes of the source and destination clusters.
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13. The method of claim 8 further comprising determining the delivery route based upon at least one of delay, link capacity, and availability.
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14. A method for sending data in a wireless ad-hoc network comprising a plurality of nodes grouped into clusters of nodes and a plurality of wireless links connecting the plurality of nodes, each cluster having a designated cluster leader node, the method comprising:
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sending a cluster-level route request from a source node of a source cluster to a cluster leader node of the source cluster;
determining a cluster-level route between the source cluster and a destination cluster comprising a destination node responsive to the cluster-level route request and using a plurality of the cluster leader nodes;
determining a node-level route from the source node to the destination node along the cluster-level route, each node along the node-level route storing an address of a next node along the node-level route;
generating a mission data packet comprising an address of the destination node;
transferring data from the source node to the destination node via the node-level route based upon the addresses of each next node along the node-level route and based upon the mission data packet; and
indexing the address of the next node along the node-level route stored at the source node by an address of the destination node. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
determining designated communication links between the cluster leader nodes;
sending a cluster leader node route request from the cluster leader node of the source cluster to the remaining cluster leaders via the designated communication links; and
returning a cluster leader node route reply from the cluster leader node of the destination cluster to the cluster leader node of the source cluster along a delivery route of the cluster leader node route request.
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20. The method of claim 19 wherein at least one of the designated communications links comprises a node that is not a cluster leader node.
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21. The method of claim 19 wherein each cluster leader node stores identities of adjacent cluster leader nodes;
- and wherein sending the cluster leader node route request comprises sending the cluster leader node route request from each cluster leader node to its adjacent cluster leader nodes.
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22. The method of claim 21 further comprising periodically polling the adjacent cluster leader nodes to maintain current addresses therefor.
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23. The method of claim 19 wherein the delivery route comprises a least number of cluster leader nodes between the cluster leader nodes of the source and destination clusters.
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24. The method of claim 19 further comprising determining the delivery route based upon at least one of delay, link capacity, and availability.
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25. A mobile ad-hoc network comprising:
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a plurality of nodes grouped into clusters of nodes, each cluster having a designated cluster leader node; and
a plurality of wireless links connecting said plurality of nodes;
said plurality of nodes sending data therebetween by sending a cluster-level route request from a source node of a source cluster to a cluster leader node of said source cluster, a cluster-level route between said source cluster and a destination cluster comprising a destination node responsive to the cluster-level route request and using a plurality of said cluster leader nodes, performing reactive route discovery to determine a node-level route from said source node to said destination node along the cluster-level route, each node along the node-level route storing an address of a next node along the node-level route responsive to the reactive route discovery, and transferring data from said source node to said destination node via the node-level route based upon the addresses of each next node along the node-level route. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification