A Joint Data Compression and Encryption Approach for Wireless Energy Auditing Networks
| Autor: | Sheng-Yuan Chiu, Hoang Hai Nguyen, Deokwoo Jung, David K. Y. Yau, Rui Tan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Lossless compression
Signal processing Computer Networks and Communications business.industry Computer science Pipeline (computing) 020208 electrical & electronic engineering Real-time computing 020206 networking & telecommunications 02 engineering and technology Lossy compression Encryption 0202 electrical engineering electronic engineering information engineering Wireless business Wireless sensor network Data compression |
| Zdroj: | ACM Transactions on Sensor Networks. 13:1-32 |
| ISSN: | 1550-4867 1550-4859 |
| Popis: | Fine-grained real-time metering is a fundamental service of wireless energy auditing networks, where metering data is transmitted from embedded wireless power meters to gateways for centralized processing, storage, and forwarding. Due to limited meter capability and wireless bandwidth, the increasing sampling rates and network scales needed to support new energy auditing applications pose significant challenges to metering data fidelity and secrecy . This article exploits the compression and encryption properties of compressive sensing (CS) to design a joint data compression and encryption (JICE) approach that addresses these two challenges simultaneously. Compared with a conventional signal processing pipeline that compresses and encrypts data sequentially, JICE reduces computation and space complexities due to its simple design. It thus leaves more processor time and available buffer space for handling lossy wireless transmissions. Moreover, JICE features an adaptive reconfiguration mechanism that selects the signal representation basis of CS at runtime among several candidate bases to achieve the best fidelity of the recovered data at the gateways. This mechanism enables JICE to adapt to changing power consumption patterns. On a smart plug platform, we implemented JICE and several baseline approaches including downsampling, lossless compression, and the pipeline approach. Extensive testbed experiments show that JICE achieves higher data delivery ratios and lower recovery distortions under a range of realistic settings. In particular, at a meter sampling rate of 8 Hz, JICE increases the number of meters supported by a gateway by 50%, compared with the commonly used pipeline approach, while keeping a signal distortion rate lower than 5%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|