%A Ke XIONG,Huimin HU,Bo AI,Yu ZHANG,Li PEI %T Information freshness orientated wireless network design for 6G %0 Journal Article %D 2020 %J Chinese Journal on Internet of Things %R 10.11959/j.issn.2096-3750.2020.00150 %P 80-91 %V 4 %N 1 %U {https://www.infocomm-journal.com/wlw/CN/abstract/article_170027.shtml} %8 2020-03-30 %X

The development of the Internet of things has led to the deployment and application of various real-time monitoring systems (such as intelligent driving) and status update systems (such as industrial control).For the above systems,the freshness of information is particularly important.If the destination receives outdated information,it may reduce the accuracy and reliability of the system’s decision-making and cause severe security risks.In the future 6G network,the freshness of information will become increasingly important for information update applications.In order to characterize the freshness of information effectively,the academic world has proposed the concept of age of information (AoI).Recently,AoI has quickly become a new performance index and research hotspot of wireless systems.Firstly the research history of information age was reviewed.Then,the key issues of AoI introduced in different network models (such as single-user networks,single-hop networks,and multi-user networks) were analyzed.Finally the future research trend was prospected.