Method and apparatus for control and routing of wireless sensor networks
First Claim
1. A method for operating a wireless sensor network, comprising the steps of:
- using a power controlled directional antenna by a base station to partition the network into a plurality of regions, each of a plurality of sensor nodes in the network determining its location in one of said regions from control messages received from said base station; and
forwarding to said base station data sensed by one of said sensor nodes, said data being contained in a packet generated by said data sensing node and including said location determined by said data sensing node, said packet being forwarded by a multi-hop process.
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Abstract
A scalable, minimum node complexity, energy efficient, and error-resilient routing method for wireless sensor networks is described. The network is partitioned into regions by power controlled base station scans using a directional antenna. Routing is performed using only local location information and instructions received from the base station at each sensor node with minimum processing and control overhead, thus allowing simple, low-cost sensor designs. Sensors in the network provide to a base station reports of the condition of the sensors themselves, and these reports are analyzed by the base station to determine improved routing instructions, which are then provided to the sensor nodes in control messages. Each data packet is relayed in an interleaved, loop-free mesh of sectors toward the base station, making data delivery robust to sensor failures and transmission errors. The disclosure also contains descriptions for simple edge-based tasking, query, code distribution, and network programming for sensor nodes. The method is suitable for large-scale, dense sensor networks for detection, alarming, and monitoring applications.
89 Citations
23 Claims
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1. A method for operating a wireless sensor network, comprising the steps of:
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using a power controlled directional antenna by a base station to partition the network into a plurality of regions, each of a plurality of sensor nodes in the network determining its location in one of said regions from control messages received from said base station; and forwarding to said base station data sensed by one of said sensor nodes, said data being contained in a packet generated by said data sensing node and including said location determined by said data sensing node, said packet being forwarded by a multi-hop process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for monitoring conditions in an area comprising:
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sensor nodes dispersed throughout the area; a base station for controlling said sensor nodes and receiving data packets generated by said sensor nodes, at least some of said data packets containing reports of conditions sensed by said sensor nodes, wherein said base station uses a power controlled directional antenna to partition said area into a plurality of regions, each of said sensor nodes determining its location in one of said regions from control messages received from said base station, and wherein each said data packet includes said location of a sensor node generating said data packet. - View Dependent Claims (21, 22, 23)
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Specification