Compressive data gathering for large-scale wireless sensor networks

摘要

Techniques for data gathering in large-scale wireless sensor networks are described. A data collection device receives aggregate data from at least one sensor node of a group of N sensor nodes. The aggregate data includes M weighted sums. Each of the M weighted sums includes a respective sum of N products each of which being a product of a respective coefficient and a sensor reading from a respective one of the N sensor nodes. M and N are positive integers and M is less than N. Computation is performed on the aggregate data to recover sensor readings from the N sensor nodes.

主权项

1. A method comprising:
receiving aggregate data, by a data collection device, from at least one sensor node of a plurality of sensor nodes, the aggregate data including weighted sums of sensor readings from each sensor node of the plurality of sensor nodes; performing computation on the aggregate data to recover sensor readings from the sensor nodes; transmitting a random seed from the data collection device to the plurality of sensor nodes before the plurality of sensor nodes transmit data to report sensor readings to the data collection device; and generating respective coefficients by individual sensor nodes of the plurality of sensor nodes using the random seed and an identification of the respective sensor node.