一种面向IEEE 802.11ah无线网络信息年龄的优化方法  

Improving the AoI of the IEEE 802.11ah wireless network

作　　者：蒋美佳 雷晓颖 Jiang Meijia;Lei Xiaoying(Yangzhou University,Yangzhou 225000,China)

机构地区：[1]扬州大学,扬州225000

出　　处：《电子测量技术》2021年第3期104-108,共5页Electronic Measurement Technology

摘　　要：物联网发展对信息时效性的需求越来越高,实时信息则变得越来越重要。信息年龄(AoI)用于衡量信息片段的新鲜度,对提高物联网信息时效性有一定的优势。吞吐量和延迟在物联网中已被广泛研究,针对物联网中数据包信息年龄的研究尚具有新颖性。因此,为了改善物联网中信息的时效性,提出了一种轮询机制。该机制通过降低数据包的接入时延进而减小信息年龄,确保接收端能收到最新的消息,进一步优化网络传输信息的时效性。仿真结果表明,该方法在拥塞密集的IEEE802.11ah无线局域网中具有显著的优势,可以有效降低信息年龄,并提升网络吞吐量。In the internet of things(IoTs), the information is required to be fresh becomes, and transmitting of real-time information becomes more and more important. The age of information(AoI) is a metric proposed to evaluate the freshness of specific pieces of information, which has certain advantages in improving the timeliness of information in IoTs. The throughput and latency have been studied extensively in the IoTs, but research on the AoI of IoTs is quite novel. Aiming at improving the freshness of the information, proposes a polling mechanism to reduce the access delay of packets and to improve the AoI of packets, such that the receiver can receive the latest messages. The simulation results show that this method has significant advantages in congested IEEE 802.11 ah wireless LAN, such that it can reduce AoI of messages and increase the network throughput as well.

关 键 词：信息年龄 吞吐量 物联网 IEEE 802.11ah 轮询机制 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]