Service-Aware and Adaptive QoS GuarAntee for Multimedia Sensor NetWork
In a multimedia sensor network, there may exist simultaneously two kinds of streams: end-to-end stream and event-to-sink stream. It brings new challenges for QoS guarantees in multimedia transmission. Aiming at the property of two services, we design an adaptive QoS guarantee mechanism merging application layer and transport layer, in order to meet the user's QoS requirements by two level adjustments. The first level adjustment, which happens at the transport layer of sensor nodes and cluster nodes, is used to adjust tolerable error rate and coefficient for event data rate. And the second level adjustment, which happens at the application layer, is used to adjust QoS parameters of streaming media data. Finally, end-to-end transmission delay of multimedia packet is simulated in order to verify the effectiveness of our QoS guarantee mechanism. In a multimedia sensor network, there may exist simultaneously two kinds of streams: end-to-end stream and event-to-sink stream. It brings a new set of challenges for QoS guarantees in multimedia transmission.
qos multimedia sensor network real time reliability