摘要
多信道聚合传输是在业务应用对通信性能要求不断提升的背景下兴起,并广泛应用于无线通信领域的一种传输优化技术。聚合传输的总体效果与通信流量在多个聚合信道间的分配方式关系密切,现有技术主要采用了基于对关键状态信息实时测量并确定流量分配权重的方式,一方面容易增大聚合传输的额外控制开销,另一方面存在比较明显的滞后性问题。因此,针对流量优化分配问题,在定义传输效用的基础上,以传输效用最大化为优化目标,提出了一种基于信道历史统计特征的流量分配权重决策机制,避免了现有技术的缺陷。仿真实验结果表明,所提机制由于充分考虑了多信道间的传输性能统计特征相关性,更易在聚合传输时取得多信道性能互补优势,在保证了传输带宽尽可能高的条件下,能够明显地降低总体传输波动,有效保障业务传输质量。
Aggregated multi-channel transmission is a transmission optimization technology that has emerged and been widely applied in the field of wireless communication in the context of the increasing communication performance requirements of business applications.The overall effect of aggregated transmission is closely related to the allocation of traffic among multiple aggregated channels.Existing technologies mainly adopts a method of traffic allocation based on real-time measurement of key state information.On the one hand,it is easy to increase the additional control overhead of aggregated transmission,and on the other hand,there is a significant lag problem.Therefore,for the problem of optimizing traffic allocation,based on the definition of transmission utility and taking the maximization of transmission utility as the optimization objective,this paper proposes a traffic allocation weight decision mechanism based on channel historical statistical characteristics,which avoids the shortcomings of the existing technologies.Simulation experimental results indicate that the proposed mechanism is more likely to obtain the complementary advantages of multi-channel performance in aggregated transmission due to the full consideration of the correlation of the statistical characteristics of transmission performance among multi-channels.It can significantly reduce the overall transmission fluctuation and effectively guarantee the transmission quality under the condition that the transmission bandwidth is as high as possible.
作者
李默嘉
姜永广
徐强
敬鸿
LI Mojia;JIANG Yongguang;XU Qiang;JING Hong(No.30 Institute of CETC,Chengdu Sichuan 610041,China)
出处
《通信技术》
2025年第8期881-887,共7页
Communications Technology
关键词
聚合传输
优化
统计特征
传输效用
流量分配
aggregated transmission
optimizing
statistical characteristic
transmission utility
traffic allocation
