无线网络中提高接入公平性的信道分配算法

A Channel Allocation Algorithm for Increasing the Accessing Fairness in Wireless Network

认知无线电是解决无线通信中频谱紧缺的有效方法。针对无线网络中恶意节点干扰正常信道分配的问题,设计了一种可提高节点接入公平性的信道分配算法。该分配算法保存了节点接入各条信道的次数,引入公平函数并使用匈牙利算法计算分配结果。仿真实验表明该信道分配算法可有效避免恶意节点长期占用信道。

Cognitive radio is an effective way to solve the problem of spectrum scarcity in wireless conmmnication. In order to avoid the interferences of malicious nodes in wireless network, a new channel allocation algorithm, which could achieve higher accessing fairness is proposed in this paper. For each sending node, the number of times for accessing each channel is saved. Fairness function and Hungarian Method are used to calculate the allocation result. Simulation result shows that this algorithm is effective in preventing malicious nodes from occupying a channel for a long time.