QoD Adaptation for Achieving Lifetime Predictability of WSN Nodes Communicating over Satellite Links

Abstract

Abstract-In this paper we propose an architecture consisting of a particular type of node, namely a communication server that collects and aggregates data, and establishes a link between the users and the sensor nodes through satellite communication. A key challenge with satisfying a lifetime requirement of the communication server is the unpredictability of the sensor data volume arriving at the communication server and the transmission power of the satellite terminal. To provide lifetime predictability we propose an approach that automatically adjusts the quality of the data such that the specified lifetime if achieved. We have shown through an extensive evaluation that the approach manages to provide an actual lifetime within 2% of the specified lifetime despite variations in workload and communication link quality.

Performance Evaluation of a Dual Coverage System for Internet of Things Environments

“…This proposed server design is used to gather sensor data. These researchers also presented a dynamic mechanism that adapts to collected data quality [39]. Poulakis et al proposed a monitoring application where a Collaborative Beamforming (CB) mechanism is deployed in the WSN/satellite system without the need for a gateway.…”

Adaptive-Compression Based Congestion Control Technique for Wireless Sensor Networks

“…Hundred sensor nodes sensed data at a random sensing interval between 100 ms to 1,000 ms and transferred the data to the sink node with a packet containing 10 data samples. We selected three performance matrixes: efficiency, fairness, QoD (quality of data), and energy [ 7 , 13 ].…”

Quality aware query scheduling in wireless sensor networks

“…For instance, Amirijoo et al defined the sensory data quality as the length of the sample interval in continuous data collection [3]. The authors proposed mechanisms to lengthen the WSN lifetime by dynamically adjusting the sampling period.…”