Improved Efficient Priority-and-Activity-Based QoS MAC Protocol

Wireless network has significantly affected human life. MAC protocols which already existed mostly transmit data without priority so that emergency event data cannot be sent quickly to destination nodes. In this paper, a new protocol called priority-and-activity-based QoS MAC (PAQMAC) protocol is proposed, in which not only the priority of data in transmission is considered, but also the active time is dynamical adjusted by recording the activity degree in a duty cycle. With the priority classified, it provides enough time to deal with emergency event, thus the security and management of network are also improved. Simulation results show that PAQMAC protocol can reduce transmission delay and decrease energy consumption of network.