Unified Antenna Front End Controller for Wireless Interference Management
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Solution Overview
Problem
Current mobile information handling systems face challenges with interference between multiple antenna systems operating on various radio access technologies, incompatibility between radio modems from different suppliers, and the need for intelligent power reduction to comply with FCC SAR regulations, leading to sub-par performance and battery life issues.
Innovation Solution
A unified antenna front end controller with a microcontroller connected to each antenna system, capable of dynamically tuning and reducing power based on trigger inputs, including proximity sensors, to optimize antenna operations and reduce interference while maintaining signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple antenna systems operate simultaneously on various radio access technologies, then communication functionality and data throughput are improved, but interference between antenna systems increases and system performance deteriorates
Solution Approach 1:
A unified antenna front end controller is introduced as an intermediary component that manages multiple antenna systems. This controller receives trigger inputs from proximity sensors and other sources, then dynamically adjusts power levels and tuning parameters for each antenna system to minimize interference while maintaining communication functionality. The intermediary controller coordinates between WWAN and WLAN antenna systems, preventing harmful interactions.
Solution Approach 2:
The system dynamically adjusts power levels and tuning parameters of antenna systems based on real-time trigger inputs from proximity sensors and operational conditions. When interference is detected or potential interference is anticipated (such as when a device is held to the ear), the controller dynamically reduces power on affected antenna systems. This dynamic adaptation allows the system to maintain high throughput when conditions permit while minimizing interference when needed.
2Reliability
If transmission power is reduced to comply with FCC SAR regulations during proximity conditions, then regulatory compliance and user safety are improved, but signal quality and battery life are affected
Solution Approach 1:
The system dynamically adjusts transmission power based on real-time proximity sensor inputs and operational context. When a proximity condition is detected (device held to ear), the controller dynamically reduces power on the affected antenna system to comply with SAR regulations. When proximity conditions are not present, the system operates at full power to maintain optimal signal quality and throughput. This dynamic approach ensures regulatory compliance without permanently degrading performance.
Solution Approach 2:
The unified controller changes operational parameters (power levels, tuning frequencies) of antenna systems based on trigger inputs. When SAR compliance is required, the controller modifies the power parameter of the affected antenna system. The system also adjusts tuning parameters to optimize signal quality under reduced power conditions, ensuring that throughput is maintained as much as possible while meeting regulatory requirements.
3Adaptability or versatility
If separate control mechanisms are used for different radio access technology antenna systems, then system compatibility and supplier independence are improved, but device complexity and coordination difficulty increase
Solution Approach 1:
The patent merges the control functions for WWAN and WLAN antenna systems into a single unified antenna front end controller. This unified controller manages both antenna systems through a common interface and control logic, eliminating the need for separate control mechanisms. The controller receives trigger inputs from proximity sensors and coordinates power adjustment across both antenna systems, reducing overall system complexity while maintaining compatibility with different radio modem suppliers through standardized interfaces.
4Object-affected harmful factors
If dynamic power adjustment is implemented based on proximity sensor triggers, then interference reduction and regulatory compliance are improved, but device complexity and power management overhead increase
Solution Approach 1:
The unified antenna front end controller implements self-service by automatically monitoring proximity sensor inputs and autonomously adjusting power levels on antenna systems without requiring higher-level software intervention. The controller contains embedded logic that directly responds to sensor triggers, dynamically reducing power when interference is anticipated and restoring full power when conditions permit. This self-service approach reduces the complexity burden on the operating system and application layers while maintaining effective interference management.
Data Source
AI summary
A wireless adapter front end for an information handling system comprising a wireless adapter for communicating on a plurality of antennas for connection to a plurality of concurrently operating wireless links, wherein at least one of the plurality of antennas is configurable to have a plurality of antenna radiation patterns and is operating in a first antenna radiation pattern, a controller operating independently from an operating system of the information handling system and executing instructions of a dynamic tuning and power reduction control system to receive a trigger input indicating an operating condition of the plurality of antennas, wherein the trigger input may be selected from one or more indications of a radiation pattern of one or more of the antennas, a shared communication frequency band, a carrier aggregation operation, SAR proximity detection, or operation of a plurality of radio access technologies and to identify an optimal tuning and power reduction configuration associated with the trigger input and the first antenna radiation pattern in a truth table stored in a memory, wherein the optimal tuning and power reduction configuration defines a plurality of transmitting power levels, each of the plurality of transmitting power levels associated with one of the plurality of antennas.