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Title: Energy-Efficient and Fault-Tolerant Solution to Ensure Reliability of Wireless Body Area Networks
Authors: Mehmood, Gulzar
Keywords: Computer Science
Computer & IT
Issue Date: 2021
Publisher: University of Malakand, Chakdara
Abstract: Wireless Body Area Network (WBAN) is a specialized breed of wireless sensor networks, providing advanced solutions for remote personal healthcare, ubiquitous monitoring, and sports/games player monitoring etc. It uses contemporary wireless and sensing technology for accurate and trusted measuring and data communication from the data source to the medical health control center. Despite its enormous benefits and applications, some of the key challenges in the design and development of WBAN are energy-efficiency, reliability, and fault-tolerance. Due to the importance of critical data and services related to WBAN, it is imperative to have a high degree of reliability and fault-tolerance, especially in health care monitoring applications. For instance, in most of the health-care applications, wireless medium interference and body-fading occur, which affects the communication among nodes and consequently degrade the reliability of the network. Similarly, WBANs are resource-constrained (limited power, low processing, and small memory) networks. Therefore, long-haul and energy-efficient operations are always desirable and challenging, as the system is required to operate uninterrupted for a long time without inference to avoid the loss of critical data and information in healthcare applications. To address the stated issues, overall aim of this thesis was to improve energy-efficiency and fault-tolerance to ensure the reliability of WBANs. Firstly, a QoS-based Multi-Path Routing (MPR) scheme is proposed, in which, the sensed data packets are classified and routed according to ‘data priority’ to ensure better reliability in terms of QoS. The best route inside the network is assigned to the critical data, while normal traffic is routed on an alternate path. Secondly, a new Mobile Agent-Based Data Aggregation (MADA) scheme is proposed, in which a Mobile Agents (MAs) are used for data aggregation. This approachx minimizes the unnecessary packet forwarding, significantly reduces energy consumption, minimizes the end-to-end delay, and increases throughput. Thirdly, a cooperative communication scheme using the network coding approach in WBAN Health-care application is proposed. In this scheme, a network coding strategy is adopted to minimize channel impairment and body fading effects, and hence, it reduces the faults and bit error rate. Based on the proposed schemes, a case study is designed for remote patient monitoring to prove its efficacy and usefulness. To evaluate the proposed solutions, this thesis implements the proposed schemes (QoS MPR, MADA and Cooperative Communication) in MATLAB/SIMULINK network simulation framework using the residual energy, throughput, packet lost ratio, packet delivery ratio, bit error rate and average end-to-end delay matrices. These simulation based experimentations facilitated to meaningfully analyse and compare the proposed schemes with the existing benchmark schemes (i.e., DM-QoS, PERA, DAP-DS and EFTA). The results demonstrated that the proposed solutions outperform the existing benchmark schemes in terms of reliability, energy-efficiency and fault-tolerance for resource-constrained WBANs. Finally, we presented thesis conclusion and outline future work. Keywords: Wireless Body Area Network (WBAN), QoS, Reliability, Fault-Tolerance
Gov't Doc #: 22843
Appears in Collections:PhD Thesis of All Public / Private Sector Universities / DAIs.

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