Dynamic WLAN Chain Management for Thermal Control
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Solution Overview
Problem
The high power consumption of wireless local area network (WLAN) systems in small form factor devices, particularly due to multiple transmit and receive chains, leads to significant system power dissipation and thermal issues, even in receive-only modes, necessitating improved power management methods.
Innovation Solution
A method and system that dynamically enable and disable WLAN chains based on internal temperature thresholds and quality of service (QoS) requirements, reducing the number of active chains to minimize power consumption while maintaining necessary performance levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple WLAN chains are enabled to support wireless service, then communication performance and reliability are improved, but power consumption and thermal issues worsen
Solution Approach 1:
The patent implements dynamic adjustment of WLAN chain configuration based on real-time temperature monitoring and QoS requirements. The system transitions from static full-chain operation to adaptive chain selection, enabling the device to optimize between performance and power consumption by activating only the necessary number of transmit and receive chains required to meet current service demands.
Solution Approach 2:
The system changes operational parameters by adjusting the number of active WLAN chains based on temperature thresholds and QoS levels. When temperature exceeds thresholds, the system reduces the number of active chains while maintaining minimum QoS requirements, thereby changing the operational state from high-power to power-saving mode while preserving essential service functionality.
2Reliability
If multiple WLAN chains are enabled to support wireless service, then communication performance is improved, but internal temperature increases
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors internal temperature and adjusts WLAN chain configuration accordingly. Temperature sensors provide real-time feedback to the control logic, which then determines the appropriate number of chains to activate based on temperature thresholds and current QoS requirements, creating a closed-loop thermal management system.
Solution Approach 2:
The system takes preliminary anti-action by proactively reducing the number of active WLAN chains before critical thermal conditions occur. By monitoring temperature and preemptively disabling chains when thresholds are approached, the system prevents excessive heat buildup while maintaining adequate service performance, rather than reacting after thermal problems arise.
3Use of energy by moving object
If the number of WLAN chains is reduced to lower power consumption, then power dissipation is improved, but QoS requirements may not be met
Solution Approach 1:
The patent applies partial action by activating only the minimum number of WLAN chains necessary to meet current QoS requirements rather than operating all chains continuously. The system dynamically determines the optimal subset of chains needed for each service scenario, enabling partial operation that suffices for power savings while maintaining adequate service quality.
Solution Approach 2:
The system dynamically adjusts the number of active chains based on real-time assessment of QoS requirements and service priorities. Rather than using a fixed chain configuration, the system adapts the operational state to match current service demands, enabling flexible trade-offs between power consumption and service quality based on actual needs.
Data Source
AI summary
Methods, systems, and computer readable media can be operable to facilitate power consumption management of a station by enabling and disabling wireless chains. A station may determine minimal QoS requirements for supporting a WLAN service at the station. The station may determine and utilize a minimal number of WLAN chains needed to support the WLAN service while meeting the minimal QoS requirements. In embodiments, an internal temperature of the station may be monitored, and when the internal temperature of the station exceeds a temperature threshold, one or more WLAN chains of the station may be disabled to reduce power consumption by the station.