Aerial Vehicle Communication Module Dual-Link Interference Management
Solution Overview
Problem
Aerial vehicles operating in the ISM frequency band face interference issues that affect their receiving performance, especially when moving near interference sources, leading to poor reception quality and high communication delays when using public network communication.
Innovation Solution
Establishing at least two communication links with a terminal device, one using a private communication link (ISM frequency band) for downlink data transmission and another using a cellular network protocol for uplink data reception, allowing the aerial vehicle to determine the optimal data receiving mode to minimize interference and reduce communication costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the aerial vehicle uses the ISM frequency band for communication, then large downlink data can be transmitted with low cost, but the receiving end suffers strong interference when moving near interference sources
Solution Approach 1:
The communication system is segmented into two independent communication links: a first communication link (non-cellular, e.g., ISM band) used for downlink transmission, and a second communication link (cellular protocol) used for uplink reception. This segmentation allows each link to operate independently, enabling the system to leverage the cost advantage of the ISM band for downlink while using the cellular link for reliable uplink communication less susceptible to local interference.
Solution Approach 2:
The cellular network acts as an intermediary for uplink communication. Instead of the terminal device communicating directly with the aerial vehicle on the ISM band (which causes interference at the aerial vehicle's receiver), the cellular network mediates the uplink transmission, routing control data from the terminal device to the aerial vehicle through the cellular infrastructure, thereby avoiding direct interference at the aerial vehicle's receiving end.
2Object-affected harmful factors
If the aerial vehicle uses public network communication for uplink data reception, then interference can be reduced, but communication delays increase and costs rise for the terminal device
Solution Approach 1:
The communication system segments the uplink and downlink paths, allowing downlink to use the low-cost ISM band while uplink uses the cellular protocol. This segmentation enables selective optimization: the cellular link provides reliable, low-interference uplink communication without requiring the terminal device to incur high public network costs for downlink reception.
Solution Approach 2:
The system changes the communication parameter (protocol type) differently for uplink and downlink. Downlink uses non-cellular protocols (ISM band) for cost efficiency, while uplink switches to cellular protocols for interference reduction. This parameter differentiation allows the system to optimize each direction independently based on its specific requirements.
3Device complexity
If the aerial vehicle uses a single communication link for both uplink and downlink, then device complexity is reduced, but the system cannot optimize for both low cost and low interference simultaneously
Solution Approach 1:
The communication module is designed with multi-functionality, capable of operating on multiple frequency bands and supporting multiple communication protocols (both cellular and non-cellular). This universal design allows the same hardware platform to support different communication modes, enabling optimization for cost and interference independently for uplink and downlink without requiring separate dedicated hardware systems.
Data Source
AI summary
A communication method includes obtaining downlink transmission data of an aerial vehicle that includes a communication module based on which the aerial vehicle establishes a first communication link not adopting a cellular network communication protocol and a second communication link adopting the cellular network communication protocol with a terminal device, sending the downlink transmission data to the terminal device based on the first communication link, determining a target data receiving mode from a first data receiving mode for receiving uplink transmission data sent by the terminal device based on the first communication link and a second data receiving mode for receiving the uplink transmission data based on the first communication link and the second communication link, and controlling the communication module to work in the target data receiving mode. The uplink transmission data includes at least one of feedback data or control data.