Abstract
Wireless sensor networks (WSNs) are required to provide different levels of Quality of Services (QoS) based on the type of applications. Providing QoS support in wireless sensor networks is an emerging area of research. Due to resource constraints like processing power, memory, bandwidth and power sources in sensor networks, QoS support in WSNs is a challenging task. In this paper, we discuss the QoS requirements in WSNs and present a survey of some of the QoS aware routing techniques in WSNs. We also explore the middleware approaches for QoS support in WSNs and finally, highlight some open issues and future direction of research for providing QoS in WSNs.
Highlights
In recent years, Wireless Sensor Network (WSN) has become one of the cutting edge technologies for low power wireless communication
SPEED It is a Quality of Service (QoS) aware soft real time routing protocol in Wireless Sensor Networks that ensures end to end QoS guarantees [9].Three types of real time communication services provided by this protocol
In this paper we have studied the QoS requirement in WSNs and highlighted some of the challenges posed by the unique characteristics of wireless sensor network
Summary
Wireless Sensor Network (WSN) has become one of the cutting edge technologies for low power wireless communication. 1) severe resource constraints in sensors nodes, 2) largescale and random deployment of sensors nodes and 3) application specific and data-centric communication protocols in WSNs. Researchers have been working continuously towards QoS support in WSNs and have proposed some methodologies for that purpose. It is envisioned that WSNs will gradually become pervasive in our daily life and will revolutionize the way we understand and manage our physical world This trend drives the WSN to provide QoS support to meet service requirement of its diverse applications. This motivates us to explore this challenging area and bring to the focus the possible research problems and their solutions. Some open research issues for QoS support in WSNs are listed in Section 4 and Section 5 concludes the paper
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