多层中继网络通信时延高容忍度控制算法仿真

Simulation of High Tolerance Control Algorithm for Communication Delay in Multi-layer Relay Network

在中继网络通信过程的高斯白噪声影响下,输入信号会产生相位偏转,即信号时延。通信时延不仅会降低网络稳定性,还会浪费信道信息资源。提出多层中继网络通信时延高容忍度控制算法。利用相似原则计算多层中继网络通信最大损耗能量,在能量限制下变换带有信息的节点值,分析通信信息源传输数据情况,将时延控制问题转变为最优概率求解,确保通信数据的传输成功率。根据网络模型计算最佳网络分簇个数,获得簇内节点数据通信周期损耗的能量,按照节点密度确定确实际节点通信半径,利用蚁群算法将全部簇头聚集至节点代价最低的多跳路由,实现多层中继网络通信时延的高容忍度控制。实验结果表明,随着通信信息缓存量的增多,研究方法的通信信息投递率仍可达到0.40,通信网络开销可控制在300J以内,最低时延能够控制在12ms,远远低于其它算法,且研究方法应用下通信网络丢包率更低,实验结果验证了上述方法的应用优势明显,实用性更好。

Due to Gaussian white noise during the communication of relay network,the input signal will generate phase deflection,that is,signal delay.This delay will not only reduce network stability,but also waste channel information resources.Therefore,this paper proposed an algorithm with high tolerance for controlling communication delay in multi-layer relay network.At first,the maximum loss of energy of multi-layer relay network communication was calculated by the similarity principle.Then the node value with information was transformed under the energy limitation.In the meanwhile,the situation of data transmission of communication information sources was analyzed.After that,the problem of time delay control was transformed into the solution for optimal probability,thus ensuring the transmission success rate of communication data.According to the network model,the optimal number of network clusters was calculated,so that the energy lost in the data communication cycle of nodes within the cluster could be obtained.According to the node density,the actual node communication radius was determined.Moreover,the ant colony algorithm was adopted to gather all cluster heads to the multi-hop route with the minimum node cost.Finally,the high tolerance control of communication delay in multi-layer relay network was achieved.The following conclusions can be drawn from experimental results.With the increase of communication information cache,the information delivery rate of the proposed method can still reach 0.40,and the communication network overhead can be controlled within 300J.Meanwhile,the minimum delay can be controlled within 12ms,which is far lower than that of other algorithms.In addition,the packet loss rate of communication network becomes lower.The experimental result proves the application advantage of this method and its practicability.