QoS Oriented Cross-Layer Design for Supporting Multimedia Services in Cooperative Networks

Providing Quality of Service (QoS) for multimedia communication is a challenging problem in wireless multi-hop networks using cooperative diversity. In this paper, we present a fully distributed cross-layer design algorithm incorporating delay constraint in order to support real-time multimedia services. We utilize network utility maximization framework in the cross-layer design algorithm modeling. The proposed algorithm joint solve congestion-control problem and routing problem using convex optimization method. Moreover, we design an End-to-end Delay Framework for delay constraint modeling when analyzing the network utility maximization problem such that QoS guarantees for multimedia communication is enhanced. Convergence Analysis indicates that this algorithm can converge, which is the expected outcome for providing QoS in supporting multimedia services.