摘要
在紧急情况下进行网络数据实时传输时,网络数据特征与信道特征不能准确匹配。传统的信道分配算法主要根据网络数据特点进行分类在选择传输信道,忽略了紧急情况的多样性及突发性对信道选择造成的干扰,导致分配准确率低的问题。提出采用端点干扰无餍算法NB-CA的紧急网络数据实时传输的信道分配算法,将紧急网络中端点之间的链路转换成正反向并行链路,通过概率分析方法计算链路干扰度与决策端点之间链路的权重,以链路权重为依据,调整端点接口分配信道的稳定性,降低变换无线终端接口在信道转换时对链路造成的干扰,实现紧急情况时也可稳定进行数据实时传输,保证网络吞吐量。仿真结果表明,在网络流量均衡的情况下,与其它算法在紧急网络数据实时传输相比较,改进算法降低了网络干扰度,网络吞吐量较高,提高了数据传输性能。
In this paper, we proposed a channel allocation algorithm using endpoint interference NB-CA algorithm. Firstly, we transformed links between endpoints into forward and reverse parallel links. The weight of links between interference degree and decision endpoint was calculated using probahilistic analysis method. Then we adjusted the allocation channel stability of endpoint interface to reduce the influence on links caused by converting wireless terminal interface in channel switching. Finally, we achieved stable data real-time transmission in emergency situation to ensure network throughput. The simulation results show that the modified algorithm can reduce network interference compared with other algorithm in load balance situation. It has high network throughput and can improve the data transmission performance.
出处
《计算机仿真》
北大核心
2017年第1期284-287,共4页
Computer Simulation
基金
河南省高等教育教学改革研究项目(2014SJGLX088)
关键词
紧急网络数据
实时传输
信道分配
Emergency network data
Real-time transmission
Channel allocation
