Cross-layer energy efficient protocol for QoS provisioning in wireless sensor network. (2017)

• Record Type: Journal Article
• Authors: Bourmada, Amal; Bilami, Azeddine
• Is Part Of: International journal of systems, control and communications. Volume 8:Number 3(2016)
• Page Start: 230
• Page End: 249
• Publication Date: 2017
• Subjects: wireless sensor network -- QoS -- cross-layer -- LQE -- PRR -- service differentiation -- energy efficiency -- HEEP -- CLEEP-QoS; Computer networks -- Periodicals; Intelligent control systems -- Periodicals; Systems engineering -- Periodicals; 004.605
• Languages: English
• ISSNs: 1755-9340

Abstract

Ensuring (QoS) in wireless sensor networks (WSNs) is a challenging issue due to the lack of resources and energy exhausting of sensor nodes. In this paper we propose a new QoS aware routing protocol for multi-hop wireless sensor networks based on cross-layer interaction between the network, MAC and physical layers. At physical layer, a link quality estimator is studied for the purpose of evaluating link quality. At MAC layer, a differentiated services mechanism is used to distinguish between real time and non-real time packets and to allocate more channel resources for real time traffic; TDMA slots also have been modified to allocate more and earlier slots to real time packets. At network layer, a routing path selection algorithm is introduced for QoS optimisation. Simulation results show that our proposed protocol improves network's performances in terms of energy efficiency and QoS.