A NOVEL PFMAC PROTOCOL FOR WIRELESS SENSOR NETWORK BASED ON PREDICTION AND FEEDBACK METHOD  

作　　者：LiuYaqiu Bian Li Jing Weipeng Zhang Qianlong 

机构地区：[1]Information and Computer Engineering College, Northeast Forestry University, Harbin 150001, China

出　　处：《Journal of Electronics(China)》2011年第4期488-495,共8页电子科学学刊（英文版）

基　　金：Supported by the 948 Project (2012-4-21);the Ph.D.Programs Foundation of Ministry of Education of China(20100062120008);the Scientific Research Fund of Heilongjiang Provincial Education Department(11553022)

摘　　要：In view of the problem that existing Media Access Control(MAC) protocols can not pro-vide real-time monitor on network conditions,this paper puts forward a new MAC protocol- Predict and Feedback MAC(PFMAC) which can predict the channel's congestion level reasonably.The dominant idea of the new scheme is to record the channel's busy or idle situation in the backoff stage by sending Sensor Nodes(SNs),and according to the congestion level every SN can change the contention window adaptively when send packets successfully to minimize collisions,saving energy and channel resources.The result of simulation shows that compared with other MAC protocols,the PFMAC protocol can improve network throughput and reduce energy consumption in high speed network en-vironment.In view of the problem that existing Media Access Control（MAC） protocols can not pro-vide real-time monitor on network conditions,this paper puts forward a new MAC protocol- Predict and Feedback MAC（PFMAC） which can predict the channel＇s congestion level reasonably.The dominant idea of the new scheme is to record the channel＇s busy or idle situation in the backoff stage by sending Sensor Nodes（SNs）,and according to the congestion level every SN can change the contention window adaptively when send packets successfully to minimize collisions,saving energy and channel resources.The result of simulation shows that compared with other MAC protocols,the PFMAC protocol can improve network throughput and reduce energy consumption in high speed network en-vironment.

关 键 词：Media Access Control(MAC) Backoff algorithm Predict and Feedback MAC(PFMAC) Contention window 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]