An efficient MAC protocol design for adaptive compressed sensing based underwater WSNs

Abstract

Abstract Underwater wireless sensor networks (UWSNs) has become one of the most effective way for underwater exploitation and realtime sensing. Unfortunately, there are many challenges for the UWSNs to cope with, the energy limitation for the sensor nodes, the demand for short data latency and also the packets loss in wireless transmission. In order to solve the mentioned problems, the EMAC‐ACS protocol, an adaptive compressive sensing based efficient medium access control protocol is designed to maximise the bandwidth utilisation. First, a feedback compressive sensing structure is designed for sensor nodes to compress the sampling data. Second, a time divide multiplex access based superframe structure is designed to support the medium access control protocol. Third, considering the energy consumption minimisation, an optimisation problem is formulated to obtain the optimal time slots number and length. Fourth, considering the compression sensing method and packets loss, the slot allocation algorithm is designed to maximise the bandwidth utility. Finally, simulations show that the proposed method perform better than most of the state‐of‐art protocols and also a testbed is built up to shown that the battery life can be prolonged for 11%.

Keywords

• Protocols
• Radio links and equipment
• Acoustic and other telecommunication systems and equipment
• Wireless sensor networks