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自由空间激光通信网容易出现的高丢包率和负载不均衡问题,传统的路由最优路径选择方法实现过程复杂,容易受到外界干扰,降低了最优路径选择的准确性。提出一种自由空间激光通信网路由最优路径选择方法。通信网络的链路代价度量进行计算,在此基础上,获取具有较高链路代价的两跳通信信道,选择第k最短路算法获取自由空间激光通信信道的最短路径,对最短路径进行迭代更新,得到不同的最短路径及对应最短跳数,选择跳数最小的路径作为最优路径,完成自由空间激光通信路由的最优路径选择,并利用通信吞吐量作为优化指标,对最优路径选择算法进行改进。仿真实验证明:最优路径优化方法可以减少路由切换的跳数,降低通信网络时延和时间复杂度,大大提高了网络的吞吐量,说明该方法可以提高自由空间激光通信网络的整体性能。
Free-space laser communication network prone to high packet loss rate and load imbalance problem, the traditional routing optimal path selection method to achieve complex process, susceptible to external interference, reducing the accuracy of the optimal path selection. A free-space laser communication network routing method by the optimal choice. Based on this, a two-hop communication channel with higher link cost is obtained, the k-th shortest path algorithm is selected to obtain the shortest path of the free-space laser communication channel, and the shortest path is iteratively updated , Get the shortest path and the corresponding shortest hop, select the path with the smallest hop count as the optimal path to complete the optimal path selection of free space laser communication routing, and use the throughput of communication as the optimization index, the optimal path selection algorithm Improve. Simulation results show that the optimal path optimization method can reduce the number of hops in routing and reduce the delay and time complexity of the communication network, greatly improving the throughput of the network, which shows that this method can improve the overall performance of the free space laser communication network.