Beamforming Antenna Array Channel Control for Thermal Management
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Solution Overview
Problem
The complexity, size, and cost of Massive Antenna Arrays (MAAs) used in wireless communication systems for beamforming, along with higher power consumption due to multiple antenna elements and RF chain circuits, pose challenges in efficiently supporting multiple service providers while maintaining signal quality and reducing interference.
Innovation Solution
Implementing a channel control circuit that selectively controls the transmission of communications channels through an antenna array based on temperature, reducing heat generation by filtering downlink channels and optimizing power consumption, thereby managing temperature and power usage effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple antenna elements and RF chain circuits are used for beamforming, then signal quality and coverage are improved, but power consumption and heat generation increase
Solution Approach 1:
The patent implements dynamic control of antenna element activation based on real-time temperature monitoring. The system transitions from static full-activation to dynamic partial-activation, adjusting the number of active antenna elements and RF chain circuits according to thermal conditions. This resolves the contradiction by making power consumption adaptive rather than fixed, allowing the system to maintain signal quality when needed while reducing power consumption when temperature limits are approached.
Solution Approach 2:
The system changes operational parameters (number of active antenna elements, RF chain circuits, and corresponding transmit channels) based on temperature conditions. By varying these parameters dynamically, the system can optimize the balance between signal quality and power consumption. When temperature is within acceptable ranges, more antenna elements can be activated for better signal coverage; when temperature exceeds thresholds, the system reduces activation to lower power consumption and heat generation.
2Reliability
If multiple antenna elements and RF chain circuits are used for beamforming, then signal quality and coverage are improved, but device complexity and cost increase
Solution Approach 1:
The patent introduces dynamic activation control that allows the system to use fewer antenna elements and RF chain circuits when temperature conditions require reduced power consumption. This dynamic approach effectively reduces the operational complexity of the system without requiring permanent reduction of hardware components, thus maintaining signal quality capability when needed while reducing actual system complexity during thermal-constrained operation.
Solution Approach 2:
The system employs partial activation of antenna elements and RF chain circuits based on operational needs and temperature conditions. Rather than requiring all components to be permanently active, the system activates only the necessary portion, effectively reducing operational complexity and power consumption while maintaining the capability to provide high signal quality when required by activating additional elements.
3Temperature
If temperature control is implemented by reducing channel transmission, then heat generation is reduced, but signal quality and coverage may deteriorate
Solution Approach 1:
The system dynamically adjusts the number of active transmit channels and antenna elements based on real-time temperature monitoring. When temperature approaches thresholds, the system reduces the number of active channels to lower heat generation. This dynamic adjustment allows the system to maintain signal quality within acceptable ranges while controlling thermal output, resolving the contradiction between heat generation and signal quality by making both parameters adaptive rather than fixed.
Solution Approach 2:
The patent changes operational parameters (number of active channels, antenna element activation) based on temperature conditions to optimize the trade-off between heat generation and signal quality. By varying these parameters dynamically, the system can reduce heat generation when temperature is high while maintaining adequate signal quality through coordinated activation of remaining channels and antenna elements, thus resolving the contradiction between thermal management and signal performance.
Data Source
AI summary
Optimizing power consumption by transmit signal optimization based on temperature in a beamforming antenna array(s) in a wireless communications system (WCS), and related methods and computer-readable media are disclosed. To manage and control the temperature of the wireless device from exceeding a desired temperature limit, a carrier control circuit is provided and configured to selectively control whether received transmit carriers (i.e. channels) are transmitted through the antenna array based on temperature of the wireless device. Heat generated by the wireless device and/or the antenna array is related to the number of carriers transmitted by the wireless device. The carrier control circuit can use temperature information to determine whether any carriers should be blocked (e.g., dropped) from transmission. Blocking carriers from being transmitted can reduce the number of RF circuit chains involved in transmitting a carrier signal, thus reducing heat generated by the wireless device and/or the antenna array.