Modeling and energy consumption evaluation of a stochastic wireless sensor network

Abstract

In this article, we consider a stochastic model of wireless sensor networks (WSNs) in which each sensor node randomly and alternatively stays in an active mode or a sleep mode. The active mode consists of two phases, called the full-active phase and the semi-active phase. When a referenced sensor node is in the full-active phase of the active mode, it may sense data packets, transmit the sensed packets, receive packets, and relay the received packets. However, when the phase of the sensor node switches from the full active phase to the semi-active phase, it is only able to transmit/relay data. When the referenced sensor node is in a sleep mode, it does not interact with the external world. In this article, first, we develop a stochastic model for the sensor node of a WSN, and then we derive an explicit expression of the stationary distribution of the number of data packets in the sensor node. Furthermore, we figure out some important performance measures, including the sensor node's energy consumption for transmission, the energy consumption of the sensor operations, and the average energy consumption of the sensor node in a cycle of active and sleep modes. Also, a numerical analysis is provided to validate the proposed model and the results obtained. The novel aspects of our research are the development of a stochastic model for WSN with active and sleep features and the development of important analytical formulae for evaluating the energy consumption of a WSN. These results are expected to be useful as significant contributions to the fundamental theory of the design of various WSNs with active and sleep mode considerations.

A Framework for Energy Based Performability Models for Wireless Sensor Networks

“…Similar studies in this area have been reported in [45], [46] and [62]. In this work mean energies consumed to transmit and receive data packets from a single state is considered.…”

“…However in the second case on demand sleep scheduling protocols are considered. The main goal for using active and sleep modes in both cases is to save on sensor power as illustrated in previous researches [46] [44] [11]. In both cases the CH or the channel may fail while operating in any state.…”

“…In order to further conserve and evaluate energy, authors in [46] have proposed WSN models and used them to analyse network performance and to evaluate residual node power. Energy evaluation for WSNs with mobile sinks is presented in [32].…”

Energy Efficiency Analysis of the Discrete Time Three-Dimensional Probability CSMA Protocol in WSN

“…2) The life cycle of node For the terminal nodes, assuming it sleeps 1 at a time, then it sleeps a within time a, the average 01024-p. 2 …”

“…You can also connect to the Internet through a gateway in remote access. Wireless sensor networks originated in military applications, and now, wireless sensor networks are increasingly used in environmental and ecological monitoring, health monitoring, home automation and traffic control, and many other civilian areas [2] . Typically wireless sensor nodes in the network are widely distributed at a larger number, which cannot rely on supplemental batteries as an energy source.…”