高移动无线网络频谱的动态启发规划策略研究

Research on Dynamic Heuristic Planning Strategy of High Mobile Wireless Network Spectrum

针对当前高移动无线网络效率低下、可靠性与稳定性不佳等问题,设计了一种频谱动态启发规划策略。根据高移动无线网络模型分析,采用吞吐量、效益和干扰多因素启发频谱的动态规划。首先,利用客户数据流量与信道吞吐量,把客户数据规划至不同的信道中,从而控制客户的入网速度;同时考虑到丢包率与信噪比对数据传递速率的影响,设计了传递速率调整规则。然后,结合客户效益与信噪比进行客户权值标记,选择最大效益的客户接入网络。最后构造预备频谱集合,通过频谱槽计算得到信道频谱的剩余情况,并根据客户效益进行预备频谱分配。仿真结果表明,所设计的启发动态规划策略有效提高了高移动无线网络的频谱利用率,具有更高的数据传递速度和更好的网络效益,并且允许网络接入更多的客户量。

In view of the low efficiency, reliability and stability of the current high mobile wireless network, a spectrum dynamic heuristic planning strategy was designed. According to the analysis of high mobile wireless network model, a dynamic spectrum planning was inspired by throughput, benefit and interference. Firstly, according to the customer data flow and channel throughput, the customer data were planned to different channels, so as to control the customer’s network access speed. At the same time, considering the impact of packet loss rate and signal-to-noise ratio on the data transfer rate, the transfer rate adjustment rules were designed. Then, combining the customer benefit and signal-to-noise ratio to mark the customer weight, we selected the most effective customer access network. Finally, a set of pre spectrum was constructed, and the residual spectrum of the channel was calculated with the spectrum slot, and the pre spectrum was allocated according to the customer benefit. The experimental results show that the heuristic dynamic programming strategy effectively improves the spectrum efficiency of high mobile wireless network, has higher data transmission speed and better network efficiency, and allows the network to access more customers.