A dynamic energy-efficient protocol for reliable and timely communications for wireless sensor networks in control and automation

• Designing quality of service (QoS) guaranteed communication protocol for wireless sensor networks (WSNs) is essential to exploit the advantages and flexibilities offered by this technology for real-time control and actuation applications. A novel cross-layer protocol that embraces altogether a semirandom routing, MAC, data aggregation, and radio power control for clustered WSNs is presented. The protocol leverages the combination of a randomized and a deterministic approach to ensure robustness over unreliable channels and packet losses. An optimization problem, whose objective function is the network energy consumption, and the constraints are reliability and latency of the packets is modelled and solved to adaptively select the protocol parameters by a simple algorithm. As a relevant contribution, the proposed protocol is completely implemented on a test-bed, and it is compared to existing protocols. Experimental results validate the analysis and show excellent performance in terms of reliability, latency, low node duty cycle, load balancing and dynamic adaptation to the application requirements.

Ämnesord

NATURVETENSKAP  -- Data- och informationsvetenskap -- Datorteknik (hsv//swe)

NATURAL SCIENCES  -- Computer and Information Sciences -- Computer Engineering (hsv//eng)

Nyckelord

Application requirements

Communication protocols

Cross-layer protocols

Data aggregation

Deterministic approach

Duty cycles

Dynamic adaptations

Dynamic energy

Energy consumption

Excellent performance

In-control

Load-Balancing

Objective functions

Optimization problems

Protocol parameters

Semi-random

SIMPLE algorithm

Unreliable channels

Ad hoc networks

Communication

Energy efficiency

Network protocols

Packet networks

Quality of service

Real time control

Reliability analysis

Routing protocols

Sensor networks

Technical presentations

Wireless telecommunication systems

Wireless sensor networks

Computer engineering

Datorteknik

Publikations- och innehållstyp

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