Abstract:
In order to solve problems of protocols like D-SMAC making single improvement to SMAC and algorithms existing deficiencies, the ADC-SMAC protocol fusing traffic forecasting and backoff mechanism was proposed. Aiming at the problem of that it was not accurate to reflect the network traffic using attributes of node queue, on the basis of traffic forecasting model, the protocol forecast the future traffic value at work period of nodes according to the time series forecasting algorithm, then the initial duty cycle gotten from the forecasting and the network average residue energy factor were combined to change the duty cycle. Aiming at the problem of single improvement, on the basis of the adjusting of duty cycle, fast collision resolution algorithm was introduced, and improved utilizing the failing times of sending data packets and the current status of the network, adjusting the value of contention window dynamically.The simulation results of NS2 show that in the different transmission interval, throughput of this fusing protocol improves about 15% comparing with D-SMAC; transmission delay reduces about 20% comparing with QDSMAC. In the smaller transmission interval, energy consumption of the protocol have a obvious advantage.Life cycle is also extended comparing with the AdcbTP algorithm.
