Wireless sensing system and method thereof
AssigneesIndustrial Technology Research Institute, National Chengchi University
InventorsYao-Chung Fan, Arbee L. P. Chen, Guan-Rong Lin, Lun-Chia Kuo
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Abstract
A wireless sensing system and a method thereof are provided. The wireless sensing system includes: a data processing center; and a first sensor module for processing a first source data into a first dynamic counting sketch data structure. The first dynamic counting sketch data structure has a bit length determined based on the first source data. The data processing center estimates the first source data based on the first dynamic counting sketch data.
Claims16
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.
A wireless sensing method applied to a wireless sensing system, the method comprising the steps of:
- receiving a user instruction;
- sensing a first source data and a second source data;
- processing the first source data and the second source data into a first dynamic counting sketch data structure and a second dynamic counting sketch data structure, respectively, wherein respective bit length of the first dynamic counting sketch data structure and the second dynamic counting sketch data structure are determined based on the first and the second source data, respectively;
- performing an in-network aggregation computation on the first and the second dynamic counting sketch data structures to generate a third dynamic counting sketch data structure;
- generating a final dynamic counting sketch data structure layer by layer;
- and
- estimating the first source data, the second source data and other source data related to other layers according to the final dynamic counting sketch data structure;
- wherein 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.
Dependencies are inferred from the claim text.