Cross-layer QoS-aware communication for ultra wide band wireless multimedia sensor networks

摘要: Wireless Multimedia Sensor Networks (WMSNs) are distributed systems of wirelessly networked devices that allow retrieving video and audio streams, still images, scalar sensor data. WMSNs will be a crucial component mission-critical networks to protect the operation strategic national infrastructure, provide support counteract emergencies threats, enhance infrastructure for tactical military operations. To enable these applications, require network paradigm re-thought in view need mechanisms deliver multimedia content with pre-defined level quality service (QoS). In this paper, new cross-layer communication architecture based on time-hopping impulse radio ultra wide band technology is described, whose objective reliably flexibly QoS heterogeneous applications WMSNs, by leveraging controlling interactions among different layers protocol stack according requirements. Simulations show proposed system achieves performance objectives without sacrificing modularity overall design.