Patent ID: 8301655

Claim:
A wireless sensing system, comprising: a data processing center; a first sensor module for processing a first source data into a first dynamic counting sketch data structure, wherein the first dynamic counting sketch data structure has its bit length determined based on the first source data; and a second sensor module for sensing a second source data, processing the second source data into a second dynamic counting sketch data structure and transferring the second dynamic counting sketch data structure to the first sensor module, wherein the second dynamic counting sketch data structure has its bit length determined based on the second source data; wherein the data processing center estimates the first source data at least based on the first dynamic counting sketch data structure; after the first sensor module receives the second dynamic counting sketch data structure, the first sensor module aggregates the first and the second dynamic counting sketch data structures into a third dynamic counting sketch data structure, and a final dynamic counting sketch data structure is generated module-by-module and sent to the data processing center; the data processing center estimates the first source data, the second source data and other source data from other modules according to the received final dynamic counting sketch data structure; and the first dynamic counting sketch data structure comprises a first border index and a first counting vector, the bit length of the first counting vector determined based on the first source data, and the first border index indicating the bit length of the first counting vector.