Cross-layer optimisation for quality of service support in wireless sensor networks

Wireless sensor networks need to deliver real-time services such as video, audio and traditional data services therefore providing efficient quality of services (QoS) support is essential. In this paper we aim to address the time-delay parameter of QoS this is implemented using a new cross-layer framework design. The concept of cross-layer design is based on architecture where different layers can exchange information in order to improve the overall network performance. Promising results achieved by cross-layer optimization initiated significant research activity in this area. We present results from simulations of the new cross layer design and traditional OSI model using the OMNET++ software. We show that the cross layer design provides a feasible and flexible approach to solving the conflict between different layers in a standard OSI model. We demonstrate that the cross layer optimization is a promising solution and that enhances the quality of service in wireless sensor network applications.