A Priority Supported MAC Protocol for Emergency Response Wireless Sensor Networks
This paper presents P-PDB, a priority supported MAC protocol for emergency response wireless sensor networks. P-PDB is based on DCF protocol which is widely used in WLAN, Bluetooth, Zigbee and other randomly distributed networks. P-PDB introduces a parameter, contention window backoff probability, to regulate the nodes media accessing priority. An adaptive regulating strategy is also proposed. The nodes detecting the emergency are considered as high priority nodes which should obtain higher bandwidth. Every node estimates the achievable throughput according to the total node number, and adjusts the probability referring to the estimated collision probability and current throughput. Theoretical analysis and simulation results show that with this protocol the node of different priority can adaptively regulate its parameter to achieve the required throughput. Meanwhile, this protocol can maximize the media resource utilization.
MAC protocol emergency response wireless sensor networks
Haoran Feng Yong Wu
National Engineering Research Center for Software Engineering Peking University Beijing, China Network and Information Security Research Lab Peking University Beijing, China
国际会议
北京
英文
854-857
2011-08-08（万方平台首次上网日期，不代表论文的发表时间）