Abstract
Recent advances in wireless and mobile communications provide ample opportunities for introducing new services. Supporting multimedia applications and services over wireless networks is challenging due to constraints and heterogeneities such as limited battery power, limited bandwidth, random time-varying fading effect, different protocols and standards, stringent quality of service (QoS) requirements. Cross-layer design methodologies are one way of addressing these challenges and providing reliable and high-quality end-to-end performance in wireless multimedia communications. This paper looks beyond cross-layer design from the perspective of simplifying the cross-layer procedures towards layers merging. Studies and observations are based on the use of cognitive radio technology as the means for optimization of the cross-layer design process.
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