Computer Science ›› 2014, Vol. 41 ›› Issue (8): 148-153.doi: 10.11896/j.issn.1002-137X.2014.08.033

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Congestion Strategy Based on Traffic Trend Forecasting for Ad-hoc Networks

WANG Wen-tao,WANG Hao,ZHU Rong-bo,GUO Feng and ZHENG Fang   

  • Online:2018-11-14 Published:2018-11-14

Abstract: For the RREQ message congestion problems of reactive MANET routing protocols in high traffic mode,this paper proposed a new mechanism.The mechanism sets different threshold to response to the route request according to the fitting curve of packet delivery ratio and packet sending rate,and the RREQ is dropped with a certain probability randomly when the average queue length exceeds the maximum threshold.The Hello packet interval is also determined by the fitting function.The simulation results indicate that without obvious increase of routing discovery frequency,the new mechanism can reduce the average end-to-end delay and Hello packet overhead effectively,and thereby improves the packet delivery ratio.

Key words: Congestion control,Fitting function,Threshold,Ad-hoc networks

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