Dear Colleagues,

The last few decades have assisted in the proliferation of Wireless Sensor Networks (WSNs), Mobile Ad Hoc Networks and, in general, distributed wireless systems, in both academic and industrial communities. Increasingly larger numbers of sensor nodes have been deployed and are networked to monitor or survey targeted areas, such that the interested data can be sensed, processed, stored and collected. Moreover, WSN areas can be connected through distributed wireless systems, such as Mobile Ad Hoc Networks or Wireless Mesh Networks. In these heterogeneous scenarios, energy efficient strategies can be a key factors because it is important to prolong a network lifetime, but it is important to also reduce CO2 emissions for a new generation of wireless devices.

Unfortunately, trying to design energy-efficient protocols and strategies can reduce QoS satisfactions, security levels or can degrade the performance of systems if some other metrics have been considered. In this Special Issue, we are interested in collecting the best practices and techniques developed to balance energy saving and QoS satisfaction and/or security and/or protocol performance. The key component to be evaluated is energy in the management of WSN, MANET or integrated WSN/MANET. However, the compromise between energy and other key metrics in protocol design will be also appreciated and considered.

Papers on the tradeoff between system performance and energy efficiency, through adapting sensing/networking functionalities to energy budget, are solicited. New techniques to sustainably supply energy to sensor nodes or mobile nodes are encouraged. For example, sensor nodes equipped with certain energy harvesting to periodically charge the sensor nodes (if they are rechargeable). The above threads (or the joint optimizations across them) are of great significance to improve the sustainability and performance of WSNs/MANETs.

Topic of this Special Issues include, but are not limited to:

• Energy harvesting/charging and power management
• Long-life sensor node deployment and topology control
• Energy-efficient communication protocol design
• Scheduling algorithms for distributed wireless networks
• Directional/Smart Antennas for energy efficient protocols
• Energy-efficient (or -free) sensing techniques
• Data Aggregation/Fusion for energy efficient
• Trade-off techniques for energy efficiency considering also QoS and/or security
• Cross layering and protocol design for energy efficiency
• New applications of self-sustainable distributed wireless networks
• Data routing, processing and storage strategies
• Network modeling and performance analysis

Prof. Dr. Floriano De Rango
Prof. Dr. Miroslav Voznak
Prof. Dr. Alfonso Ariza Quintana
Guest Editors

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• Energy harvesting/charging
• power management
• Long-life sensor
• Energy-efficient communication
• distributed wireless networks
• sensing techniques
• Data Aggregation/Fusion
• QoS
• security
• Cross layering
• protocol design for energy efficiency
• Data routing
• storage strategies
• Network modelling
• performance analysis