Vehicle mmWave Antenna Switching for Overheating Continuity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Millimeter wave communication devices in vehicles experience reduced transmission signal power due to overheating of power amplifiers, leading to inefficiencies in data transmission and reception, particularly in vehicle-to-everything (V2X) communication requiring high data rates and low latency.
Innovation Solution
A millimeter wave communication device with multiple antenna modules that detects operation state changes, such as overheating, and switches antennas to maintain continuous communication by using pre-calculated phase values for seamless beamforming based on stored simulation data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a millimeter wave communication device uses a power amplifier to increase transmission signal power, then the transmission signal power is improved, but heat is generated causing the power of the transmission signal to be reduced
Solution Approach 1:
The system pre-calculates phase values for beamforming before antenna switching occurs. When overheating is detected, the newly switched antenna module can immediately use these pre-calculated phase values to maintain beamforming continuity, preventing communication interruption despite the thermal conditions
Solution Approach 2:
The system changes operational parameters by switching between multiple antenna modules based on thermal conditions. When one antenna module overheats, the system switches to a different antenna module, thereby changing which physical component is in use while maintaining the overall communication function
2Adaptability or versatility
If the antenna module temperature increases due to external environment exposure, then the device can operate in various conditions, but the transmission signal power is reduced due to overheating
Solution Approach 1:
The system dynamically switches between multiple antenna modules based on real-time thermal conditions. The antenna switching is not static but adapts continuously to changing environmental temperatures and operational states, allowing the system to maintain optimal performance across varying external conditions
3Reliability
If antenna switching is performed to overcome overheating, then continuous communication can be maintained, but data loss may occur during switching
Solution Approach 1:
Beamforming phase values are pre-calculated for antenna modules before switching occurs. This preliminary preparation ensures that when switching happens, the new antenna module can immediately continue beamforming operations without interruption, preventing data loss during the transition
Solution Approach 2:
The system maintains continuous beamforming operation during antenna switching by using pre-calculated phase values. The useful action of beamforming continues uninterrupted despite the physical antenna module change, ensuring no data loss occurs during the switching process
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures continuous and efficient data communication by preventing signal power reduction and data loss during antenna switching, even in the presence of overheating, thereby maintaining high data rates and low latency.
Implementation Method 1
the power of the transmission signal is reduced due to the heat generated in a power amplifier included in an antenna module
Implementation Method 2
a millimeter wave (mmWave) antenna module is used in V2X communication
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure provides a millimeter wave communication device mounted on a vehicle and including a plurality of antenna modules and an operating method of the millimeter wave communication device. A millimeter wave communication device according to an embodiment of the present disclosure recognizes an operation state change due to overheating of each of a plurality of antenna modules, switches antennas by selecting any one of a plurality of antenna modules on standby according to the recognized operation state change, and performs beamforming by the antenna module, to which switching has been performed, by using prestored beamforming simulation data, thereby maintaining continuity of data communication with a base station.