Directional LTE Antenna Switching for Stable In-Vehicle Communication
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Solution Overview
Problem
In environments such as aircraft or special ships where LTE antennas and devices cannot be installed outside and the reception of LTE signals inside is inefficient due to structural peculiarities, communication efficiency is low.
Innovation Solution
An automatic switching communication method and device using directional antennas, comprising a main communication module and a sub-communication module, which monitor LTE communication states, register information in a routing table, and adjust routing paths based on pre-specified communication quality coefficients to select the most efficient module for communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LTE antennas and devices are installed inside aircraft or special ships, then communication can be performed, but reception efficiency is low due to structural peculiarities
Solution Approach 1:
The system dynamically switches between main and sub communication modules based on real-time signal quality assessment. The processor continuously monitors communication states and automatically selects the optimal module, making the communication system adaptive to changing environmental conditions rather than static
Solution Approach 2:
The system changes the operational state parameter of the communication modules by switching between active and standby states based on signal quality coefficients. When the main module's signal quality falls below a threshold, the system changes to using the sub module, thereby optimizing communication efficiency
2Reliability
If a single communication module is used, then device complexity is low, but communication stability is insufficient in varying signal conditions
Solution Approach 1:
The processor acts as an intermediary that manages two communication modules, assessing their states and automatically selecting the optimal one. This intermediary control mechanism allows the system to maintain high reliability through module switching while keeping the user interface simple and transparent
3Measurement precision
If directional antennas are used to improve signal reception, then communication quality increases, but the system cannot adapt to changing signal directions
Solution Approach 1:
The system employs dynamic switching between multiple communication modules, each equipped with directional antennas. As the vehicle moves and signal directions change, the processor continuously assesses signal quality and switches to the module with the best reception, making the overall system adaptive despite using fixed-directional antennas
Data Source
AI summary
Disclosed is an automatic switching communication method including: obtaining LTE communication state information of a main communication module for communicating with outside through a directional antenna and a sub-communication module for communicating with the outside through a directional antenna; registering the LTE communication state information of the main communication module and the sub-communication module in a routing table; determining whether the main communication module and the sub-communication module are capable of performing LTE communication; and comparing with pre-specified communication quality coefficients of the main communication module and the sub-communication module to adjust a routing path.