Peking University spearheads the world’s first IoD satellite-terrestrial link verification
Mar 31, 2022
Peking University, March 31, 2022: The first-ever Internet of Data (IoD) satellite node, designed by the research team headed by Professor Huang Gang of Peking University, was launched from the Jiuquan Satellite Launch Center, at 12:12 pm on December 7, 2021. This invention has received the support of various agencies, including the National Science Foundation for Distinguished Young Scholars and Key-Area Research and Development Program of Guangdong Province. The satellite has successfully entered its designated orbit. After three months of debugging, the satellite node has linked its first batch of digital objects generated in space with BDWare’s IoD. This verifies the connectivity and effectiveness of the IoD satellite-terrestrial link and marks the crucial first steps to the creation of an integrated satellite-terrestrial system.
Through software-defined networking (SDN) and building upon the basis of the Internet of Things (IoT), the IoD is a virtual data network that aims to connect data from various systems and networks through an open network system and standardized interoperability protocol. IoD mainly relies on the technological architecture of Digital Object Architecture (DOA) proposed by Robert Kahn, the co-inventor of the TCP/IP protocols.
Since 2018, Peking University has collaborated with various renowned Chinese universities and research institutes, including Tsinghua University and Chinese Academy of Science. Together, they have proposed the Chinese IoD Cloud Solution. Peking University also led the formation of a new Digital Object Interface Protocol (DoIP) specification, which is one of two fundamental DOA protocols.
Relying upon Beijing University of Posts and Telecommunications’ Tiansuan Constellation project, the IoD launched in December 2021 has successfully verified the new DOIP protocol’s software adaptive connectivity of multi-network and communication protocols between satellite-terrestrial links. A second IoD satellite node was launched in February 2022. It aims to verify the possibility of achieving adaptive connectivity of the satellite-terrestrial link between satellite nodes and terrestrial IoD. It is expected to run tests in space environments for system-wide satellite IoD technology and system software in 2023. These trials are to be based on an intersatellite direct interconnection network.
Written by: Brenda Cheong
Edited by: Ma Yaoli
Source: PKU News (Chinese)
