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机会网络中节点在转发数据包之前,需要通过探测发现与自己发生接触的其它节点,而探测过程需要消耗能量,探测周期与探测到的接触数间有一种均衡关系.针对这种关系提出一种在机会网络中基于节点探测的能量均衡机制,该机制首先通过泊松分布模型建模得到有效探测概率,然后根据提出的表达式得到有效探测接触数,最后通过分析探测周期与有效探测接触数之间的关系,找到不同情况下探测周期与探测有效性的均衡点.结果表明,可以根据节点所处的环境来设置探测周期,达到节能的目的.
Before the node in the opportunistic network forwards the data packet, it needs to detect other nodes that contact with itself through the probe, and the energy consumption is required in the probe process, and there is a balanced relationship between the probe period and the number of detected contacts. Based on the energy balance mechanism of node probing in opportunistic networks, this mechanism firstly constructs the Poisson distribution model to get the effective probing probability, and then obtains the effective probing contacts according to the proposed expression. Finally, by analyzing the probing cycles and the effective probing contacts And finds the equilibrium point between the detection period and the detection validity in different situations.The results show that the detection period can be set according to the environment in which the node is located to achieve energy saving.