A full-duplex half-duplex seamless adaptive switching system based on ccsds Proximity-1 protocol

Abstract

The invention relates to a full-duplex and half-duplex seamless self-adaptive switching system based on the CCSDS Proximity-1 protocol, belonging to the field of deep space detection relay communication; including an integrated electronic unit, a waiting response module, a seamless switching module during a call, A business phase communication module, a business phase seamless switching module, a half-duplex parameter self-adaptive adjustment module and a full-duplex parameter self-adaptive adjustment module. The invention realizes the seamless switching between full-duplex mode and half-duplex mode within the power resource scheduling time of the deep space probe, no matter the current state is under any branch of the protocol, and adaptively adjusts according to the current scene Communication parameters, which solve the problems of communication interruption, reconnection, and communication parameter mismatch caused by full-duplex / half-duplex mode switching in the CCSDS Proximity-1 protocol, resulting in frame loss and communication throughput reduction. Maximum communication throughput is achieved while backtracking error-free transmissions within the scheduled time.

Description

technical field [0001] The invention belongs to the field of deep space exploration relay communication, and relates to a full-duplex half-duplex seamless adaptive switching system based on CCSDS Proximity-1 protocol. Background technique [0002] In deep space exploration missions such as Mars, due to the long communication distance, the remote control commands on the ground have a large delay, and because the arc time with the earth is limited, it cannot be controlled in real time, so it mainly relies on the communication between the orbiter and the landing rover. For autonomous communication, the forward link generally transmits the remote control commands forwarded by the ground to the landing rover through the surround, and the return link generally transmits the key telemetry information of the landing rover and other information such as the images collected. The information transmitted on the forward and return links is very important and no dropped frames are allowed...

AI Technical Summary

Problems solved by technology

Due to the resource shortage of the Mars rover, there is usually a situation of dynamic deployment of the whole device's resources in the visible arc, resulting in dynamic changes in the power provided to each subsystem

The UHF frequency band transceiver of the Mars rover is equipped with a high-power solid-state amplifier, and the power consumption of the whole machine is large. In the communication arc, there is a situation where the full-duplex / half-duplex communication mode is switched due to the resource allocation of the sub-system, resulting in forward and reverse communication. Interruption, after the communication is interrupted, the orbiter and the rover will re-establish the connection according to the requirements of the Proximity-1 protocol, which takes a long time, resulting in a decrease in communication throughput

In addition, due to different application scenarios, full-duplex and half-duplex will cause a mismatch in communication parameters, resulting in a further reduction in communication throughput.

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