R&D Institution: BUPT, SpaceTY, Peking University.

 Main tasks:

Serve as the core node of the open source platform for satellite computing and perform in-orbit experiments for the Tiansuan Constellation.

 Other tasks:

1. Support distributed onboard AI inference test, satellite 5G core network V4 test, deployment of lightweight UPF test based on eBPF, satellite-terrestrial link reliability test, satellite network protocol proxy, satellite-terrestrial link quality awareness transmission, real-time video streaming transmission, satellite-terrestrial link performance measurement, IP-optical fusion networking, and satellite application capability exposure.

2. Support on-orbit deployment and experiments such as the No. 3 node of Peking University's data network, Tsinghua University's loTDB IoT database, Beihang University's lightweight container, Yantai University's multi-space crowd sensing, Hunan University of Science and Technology's distributed data security encrypted transmission, and Ascend AI's Atlas 200 DK, an AI computing acceleration module.

 Objective:

The first flagship satellite of the Tiansuan Constellation, promoting the construction of a satellite-terrestrial collaborative computing platform.

 Contributions:

It lays a technical foundation for the construction of an in-orbit open source experiment platform for satellite computing, and provides technical support for China's construction of intelligent comprehensive digital infrastructure, 6G network and satellite Internet.

  Highlights:

The application of cloud native technology system to satellites overcomes key technical challenges such as container weight reduction, satellite-terrestrial network protocol compatibility, integration of onboard switching technology and heterogeneous equipment management under power and temperature constrains. Based on that, BUPT-1 has the ability of payload service combination, which effectively solves the problems of incompatible traditional satellite payloads, difficult reuse of software and hardware, and slow technical iteration caused by difficulty in meeting the service diversity of users and the timeliness of experiments.

 Next plan:

Research on cloud-native satellites and technical systems that support inter-satellite links, and promote the construction of cloud-native ground stations.