改进的IEEE 802.15.4组网协议算法

Design and analysis of association period of IEEE 802.15.4 beacon enabled network

分析了IEEE 802.15.4网络初始化的流程,并提出了一种改进的协议算法.通过设置协调器进行处理,有效地减少协议的冗余信令,避免了不必要的冲突,减少了节点加入网络的延迟.最后通过仿真对原协议和改进算法进行比较,得出节点加入过程的原语数减少了31%,加入时间减少了84%.当多个节点在较短时间内都进行加入操作时,改进算法的优势更加显著.这种改进算法能在家庭网络中得到很好的应用.

This paper analyzed network initialization flow of institute of electrical and electronics engineers （IEEE） 802.15.4 in detail and advanced an improving method. By the configoation of cooridination. It is developed to reduce redundant primitives by, avoiding collision and decrease association delay. The comparion of the simulation result of IEEE 802.15.4 and the improving method shows that the number of association primitives decreased-31%, the association time decreased 84%. The advantage of improving method would be more obvious when large quantity of nodes associate in a short time. It could also be well applied in home network.