【摘要】 以无标度网络为对象,通过模拟计算研究了基于局域信息的传输问题,发现网络的临界信息包产生率与传输速度的极值所对应的a值并不相同。进一步分析表明:这一差异是由于核心结点的作用得以发挥而使得传输效率提高所致。基于此研究提出了局城搜索目标小集团传输策略,分析了在只依靠局域信息进行传输的前提下提高传输速度的几种途径。实验结果表明:这几种方法各有优缺点,但均可为缓解真实网络的拥堵给予指导和帮助。更多还原

【Abstract】 Through numerical simulation of traffic routing on scale-free networks based on local routing information,the value of parameter a corresponding to the maximal critical generating rate was found to be different from that corresponding to the optimal traffic speed.The further analysis made it clear that the discrepancy resulting from effectively utilizing central nodes of scale-free networks led to an increase in traffic efficiency.Therefore,this paper proposes a new routing strategy for searching the target cluster based on local information and also analyzes several approaches to increasing traffic speed only under the prerequisite for local routing information transmission.The simulation results show that each method has advantages and disadvantages but is useful for easing traffic congestion of real networks.更多还原