| Summary: | 碩士 === 國立中興大學 === 資訊科學與工程學系所 === 99 === In the field of wireless sensor network, the node and node compete for the channel, it has been a quite important research topic all the time. Because wireless sensor network between node and node scarce to communicate , so how is it use to take turns channel, lack very good distribution method all the time. So already some has studied and begun to carry on development and discussion to the competition mechanism among the nodes .
Of this thesis, in order to quantize the collision probability among the nodes, we will be based on competition mechanism of 802.15.4 , probability that and then propose hiving off and perform algorithms attempting to lower colliding , reducing the abandonning of the package. Finally it calculate out hive off by looks on hiving off relatively, improvement benefit,and whether by parameter of five pieces: Inputting rate of the materials , service of the system rate , nodal total amount in the environment , standing for a long while to arrange the size , standing for a long while to arrange the critical value , introduction parameter as the experiment .
In the experiment of this thesis, the pixels of probability that we utilize MATLAB and input colliding , prove respectively to five parameters separately, the change of every group of probability of colliding , carries on the inference and discussion while observing the parameter change. Optimum value of the figure that finally to find out hiving off with different inputting rate of materials, let the probability by can let to hive off and colliding of the system be minimized.
|
|---|
