CN-122027030-A - Intra-satellite high-speed information network system based on double-margin time-sensitive annular Ethernet

CN122027030ACN 122027030 ACN122027030 ACN 122027030ACN-122027030-A

Abstract

The invention relates to an intra-satellite high-speed information network system based on a double-margin time-sensitive annular Ethernet, which comprises an on-satellite single machine, a regional controller, a time-sensitive annular network, an Ethernet, a router and a calculation load, wherein the regional controller is a protocol conversion hub for IP access of the on-satellite single machine and is configured to collect intra-satellite regional control data, issue control instructions and classify and forward traffic, the time-sensitive annular network is configured to provide mu s-level transmission for the time-sensitive control data and realize time synchronization of intra-satellite control nodes, the time-sensitive annular network is constructed based on TSN, and the Ethernet is configured to provide transmission support for inter-satellite Gbps-level high-speed service data so as to adapt to on-satellite data interaction requirements. The invention provides a technical foundation for satellite intra-satellite network information transmission, soft and hard decoupling and single machine flexible upgrading, and can support future large-scale inter-satellite networking interconnection interoperability, networking collaboration and intelligent evolution.

Inventors

DU CHUANCHAO
HU HAIYING
LIU GUOHUA
GAO SHUANG
FENG JIAPENG
XIA LUYI
LIU YANG
PEI WENLIANG
FENG HAN

Assignees

中国科学院微小卫星创新研究院
上海微小卫星工程中心

Dates

Publication Date: 20260512
Application Date: 20260224

Claims (10)

1. An intra-satellite high-speed information network system based on a double-margin time-sensitive ring ethernet, comprising: An on-board unit configured to generate in-satellite data and execute control instructions; The regional controller is a protocol conversion hub of the on-board single machine IP access and is configured to collect on-board regional control data, issue control instructions and classify and forward traffic; A time-sensitive ring network configured to provide μs-level transmission of time-sensitive control data and to enable time synchronization of the control nodes within the satellite, the time-sensitive ring network being constructed based on TSNs; The Ethernet is configured to provide transmission support for the Gbps-level high-speed service data in the satellite so as to adapt to the data interaction requirement on the satellite; A router configured to provide a switching network channel for the on-board unit, provide IP address-based network services, support intra-board networking by network transmission using a general Ethernet message, and And calculating load, wherein the load is configured to realize the high-speed service data processing and continue to distribute the processing result across networks, and support satellite control and on-orbit service management.
2. The dual-margin time-sensitive ring ethernet based in-satellite high-speed information network system according to claim 1, wherein said zone controller is configured with: a TSN exchange module configured to access a TSN ring network to realize TSN data exchange networking between regional controllers, and A satellite module configured to implement hardware functions including stand-alone communications and acquisition control and software functions including satellite management, orbit and attitude orbit control.
3. The dual-margin time-sensitive ring ethernet based intra-satellite high-speed information network system according to claim 1, wherein said time-sensitive ring network comprises four said regional controllers, each regional controller being a communication node, four regional controllers constructing said time-sensitive ring network via twisted pair wires.
4. The dual-margin time-sensitive ring ethernet based intra-satellite high speed information network system of claim 1, wherein said time-sensitive ring network comprises: Protocol clusters, which include clock synchronization, data scheduling and traffic shaping, reliability and resource management.
5. The dual-margin time-sensitive ring ethernet based intra-satellite high-speed information network system of claim 1, wherein said ethernet is a tera ethernet network that communicates general computational loads, imaging loads, routes, lasers, data within a satellite.
6. The dual-margin time-sensitive ring ethernet based in-star high speed information network system of claim 1, wherein said router is configured with: The multichannel high-speed communication interface comprises an optical fiber interface and is configured to communicate with a high-speed single machine, so as to support IP communication, be compatible with TSN network protocols and be interconnected and communicated with a time-sensitive ring network, wherein the high-speed single machine comprises a high-performance computer, remote sensing loads, mass storage, satellite-to-ground data transmission and inter-satellite laser communication.
7. The dual-margin time-sensitive ring ethernet based in-satellite high speed information network system of claim 1, wherein said computational load is configured with: a TSN communication module configured to access the time-sensitive ring network to enable the computational load to interact with other on-board devices and regional controllers via the time-sensitive ring network with time-sensitive traffic, bandwidth reservation traffic, and best effort traffic, and The tera Ethernet module is configured to be connected with the router and has CPU, NPU, FPGA high-performance computing capacity, so that the computing load can receive Gbps-level service data generated by the load, task planning, information processing, data fusion and health management and control of satellite services are realized, and data processing of the single satellite machine is realized.
8. The intra-satellite high-speed information network system based on the double-margin time-sensitive annular Ethernet according to claim 1, wherein the time-sensitive traffic sent by the regional controller through the time-sensitive annular network comprises a remote control command and an OC control command, the sent bandwidth reserved traffic comprises time broadcasting, satellite attitude data, satellite orbit data and solar vector data, the sent best effort traffic comprises reconstruction data, cloud computing data, inter-satellite cooperative data and his star slicing data, the bandwidth reserved traffic sent by the on-satellite equipment through the time-sensitive annular network comprises single-machine telemetry, and the sent best effort traffic comprises star sensitive service data and load slicing data.
9. The dual-margin time-sensitive ring ethernet based in-star high-speed information network system of claim 1, wherein said in-star high-speed information network system provides different network configuration information for different types of data, and encapsulates the data according to the network configuration information into time-sensitive traffic, bandwidth reservation traffic, or best effort traffic for transmission in the time-sensitive ring network, said network configuration information comprising a data source device ID, a data destination device ID, a data transmission period, a TSN network data type, and an application layer protocol.
10. The dual-margin time-sensitive ring ethernet based in-satellite high-speed information network system of claim 1, further comprising: A time synchronization system configured to calibrate a time reference by introducing PPS signals of a GNSS/BD to the zone controller and to provide a unified clock signal to the system through IEEE 1588 protocol and IEEE 802.1AS protocol.

Description

Intra-satellite high-speed information network system based on double-margin time-sensitive annular Ethernet Technical Field The invention relates to the technical field of satellite communication, in particular to an intra-satellite high-speed information network system based on a double-margin time-sensitive annular Ethernet. Background With the development of intelligent processing technology on board a satellite, satellite systems are evolving towards high performance, large bandwidth and modularization. The amount of interactive data in the satellite is increased, and the requirements of the satellite on efficient communication and intelligent control are difficult to meet in the traditional low-bandwidth communication mode. The satellite service data stream is usually Gbps, the control data stream is usually Mbps, the difference between the two data bandwidth requirements is more than hundred times, meanwhile, the service data only has exchange requirements in the specific time of task execution or ground planning, the control stream is all day long, the data bandwidth is related to the state change degree of the satellite, and the data exchange frequencies of the two data are greatly different, so that the service and the control stream are independently decoupled for saving bandwidth and interface resources, the data bandwidth requirements are distinguished, and the utilization efficiency of the resources is enhanced. Disclosure of Invention The invention provides an intra-satellite high-speed information network system based on a double-margin time-sensitive annular Ethernet, which relates to an intra-satellite network comprising a time-sensitive Ethernet (TSN) network and a tera Ethernet (10 GE) network, and is used for realizing the separation transmission of low-speed time-sensitive control data and high-speed service data, wherein the TSN is connected with the 10GE network, realizing the cross-network transmission of low-speed data and inter-satellite data, and realizing the on-satellite single-machine ip addressing and networking communication through the TSN and the 10 GE. The invention provides an information network of 'mu s grade Shi Min Ethernet+Gbps grade tera Ethernet', which constructs a double-margin annular Shi Min control Ethernet with main and standby cross backup, supports high-reliability transmission of satellite control data, supports traditional single machine plug and play and IP networking communication through a multi-protocol gateway, constructs a star-shaped tera service Ethernet with main and standby cross backup, and supports high-speed data transmission of satellite images, inter-satellite lasers and the like. The TSN is interconnected with the 10GE to support the inter-satellite data cross-network circulation of satellite control, service and inter-satellite data. Ethernet has been used in the ground for many years, and its transmission rate, reliability, etc. have been examined. In the aspect of satellite application, the Ethernet scheme is superior to the traditional bus architecture by virtue of high bandwidth, protocol compatibility and expandability, and can fully cover the requirements of a satellite system in the aspects of instantaneity and reliability by combining with a TSN technology, so that the Ethernet scheme is expected to become the main flow direction of the interconnection inside a spacecraft in the future, and the advantages include high bandwidth, reliability enhancement, provision of real-time service and protocol unification and compatibility. The intra-satellite network comprises Shi Min TSN network, tera Ethernet network and other two networks, realizes isolation of a control plane and a service plane, and supports abnormal sensing and recovery. The invention provides an intra-satellite high-speed information network system based on double-margin time-sensitive annular Ethernet, which comprises: An on-board unit configured to generate in-satellite data and execute control instructions; the regional controller (SIU) is a protocol conversion hub of the on-board single machine IP access and is configured to collect on-board regional control data, issue control instructions and classify and forward traffic; A Time-sensitive ring network configured to provide μs-level transmission of Time-sensitive control data and to enable Time synchronization of the control nodes within the satellite, the Time-sensitive ring network being constructed based on a TSN (Time-SENSITIVE NETWORKING, time-sensitive network); The Ethernet is configured to provide transmission support for the Gbps-level high-speed service data in the satellite so as to adapt to the data interaction requirement on the satellite; A router (SRU) configured to provide switching network channels for the on-board unit, provide IP address-based network services, support intra-board network IP using general Ethernet messages for network transport, and A computational load (SCU) configured to imple