论文部分内容阅读
为提高拓扑可靠性要求下的多接口多信道无线Mesh网络传输容量,首先分析了逻辑拓扑结构与最大可分配信道数量之间的关系,然后定义了任意节点间的拓扑可靠性计算公式,并建立了逻辑拓扑设计优化模型,最后提出拓扑可靠性约束下的逻辑拓扑设计方法.该方法以拓扑可靠性及网络路径跳数为约束条件,以最大容量最小干扰为优化目标,把最短路径与最小生成树算法融入到不相交路径计算的过程中,进而得到优化的逻辑拓扑.通过网络仿真验证及与其它算法的对比分析,在两组可靠性要求下,网络吞吐量及平均端到端时延平均性能分别提升25.4%,25.8%及35.9%,26.1%,验证了该逻辑拓扑设计方法的合理性和有效性.
In order to improve the transmission capacity of multi-interface and multi-channel WMN under the requirement of topology reliability, the relationship between the logical topology and the maximum number of allocable channels is analyzed. Then, the formula to calculate the topology reliability between arbitrary nodes is defined and established The logic topology design optimization model is proposed and the logic topology design method based on topology reliability constraints is proposed.The method is based on the topology reliability and the number of network path hopbles as constraints and the maximum capacity minimum interference as the optimization goal.The shortest path and the minimum generation Tree algorithm into the disjoint path computation process, and then get an optimized logical topology.Through network simulation verification and comparison with other algorithms, under the two sets of reliability requirements, the network throughput and average end-to-end delay average 25.4%, 25.8%, 35.9% and 26.1% respectively, which verified the rationality and effectiveness of this method.