Predictive dependency constraint directed self-healing for wireless sensor networks

Abstract

Abstract-Wireless sensor networks are now being considered for mission critical applications, which are often largely unattended and need to operate reliably for years. However, due to the real world communication, sensing and failure realities, clock drift, and node faults, the system performance may degrade significantly over time. It is highly desirable that these natural deteriorations can be monitored continuously and can be corrected with self-healing when necessary. In this paper, we introduce a dependency constraint directed self-healing scheme for wireless sensor networks. We reveal that when self-healing services are being composed, certain dependency constraints, including invocation, parameter consistency, control and implicit assumption dependencies must be carefully identified and respected. We illustrate each of these dependency constraints through case studies in 3 different systems covering the typical functions of wireless sensor networks, including sensing, communication and tracking. Our research indicates that, following the dependency constraints in self-healing design is not only a must for the correctness of self-healing services, but is also a key to energy efficient self-healing.

A Cooja-Based Tool for Coverage and Lifetime Evaluation in an In-Building Sensor Network

“…Li et al [32] propose a dependency constraint-directed self-healing framework to allow users to compose self-healing services. The framework includes three components: health monitoring, self-healing policy and self-healing engine.…”

An Energy Efficient Self-healing Mechanism for Long Life Wireless Sensor Networks

“…Link adaptation is one of the common techniques used for topology control in Wireless Sensor Networks by adapting communication parameters and exchanging neighbor informations. As shown in [6], authors propose a self-healing framework based on link quality measurement to detect and solve coverage holes. They use dependency constraints through a three modules framework (Health Monitoring module, Self-healing Policy and Self-healing Engine).…”

An Overview of Self-Protection and Self-Healing in Wireless Sensor Networks

“…As reported in [24,25], SASHA system gave the full attention to faulty sensor readings and overlooked the energy consumption problem while addressing the self-healing problem.…”

“…As reported in [24], self-healing property of BiSNET is designed based on the biologically architecture of bees; however, the self-heal ability of the BiSENT is not well illustrated in general. It is only considered the power consumption while addressing the self-healing.…”