On May 14, 2022, Han Rui, a member of our group,  successfully passed the thesis defense for Docotr's Degree. The title of the thesis is "Research on the Key Technologies of High Reliable and Secure Communication of the Air-Space-Ground Integrated Internet of Things". After graduation, the student will go to Tsinghua University for post-doctoral research work. Wish her a successful scientific research and a bright future!