How does DMIF address the QOS issue ?
DMIF V2 starts addressing the QOS Architecture by extending the DAI primitives with QOS monitoring capabilities. The QOS architecture for DMIF should address different ways of dealing with QOS in different networks. Basically, there are two approaches. On one hand, proactive networks that allocate resources during connection set-up. On the other hand, reactive networks that react according to the available resources during the life of a connection. In order to accommodate both types of networks there is a need of three types of DAI primitives: REQUEST OF QOS These primitives are already specified in DMIF V1 (i.e., DAI_ChannelAdd). The QOS parameters are specified inside the ChannelDescriptor in terms of: • Priority (qualitative QOS)\ • Profile (quantitative QOS in terms of delay and loss) • Traffic (amount of resources in terms of bit rate) MONITORING OF QOS These primitives are already specified in DMIF V2 (i.e., DAI_ChannelMonitor, DAI_ChannelEvent). They provide feedback mechanisms
