International Journals of Advanced Information Science and Technology (IJAIST)
Main aim is to support Quality of Service (QoS) at Medium Access Control (MAC) for Wireless Sensor Networks (WSNs). This protocol is a combination of contention based and Time Division Multiple Access (TDMA) based MAC protocol. A novel channel-reservation technique is used to reduce the end-to-end latency. Is chosen HMAC protocol with an embedded cross-layer optimization solution to provide routing-layer coarse -grained end-to-end QoS support for latency-sensitive traffic flows. Channel-reservation technique is used for significantly reducing the end-to-end delay for delay-sensitive traffic flows by allowing packets to go through multiple hops within a single Medium-Access Control (MAC) frame and by also giving them higher priority channel access to reduce possible queuing delay.