Adaptive Receive Chain Diversity Processing for Power Management
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Solution Overview
Problem
The use of multiple transmit and receive chains in mobile devices enhances data transmission rates but increases power consumption, which is a concern for battery-operated devices aiming to extend operation time.
Innovation Solution
An adaptive system that enables and disables diversity receive chains based on elapsed idle time, activity on the transmit chain, and historical usage data, using a control module to manage the operation of multiple receive chains and adjust thresholds accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If multiple receive chains are used to enhance data transmission rates, then data rate is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the number of active receive chains based on real-time conditions. The control module enables or disables diversity receive chains according to elapsed idle time thresholds, transitioning between different operational states (single receive chain vs. multiple receive chains) to optimize the balance between data rate and power consumption.
Solution Approach 2:
The system changes the operational parameter of receive chain configuration by adjusting the threshold for enabling/disabling diversity receive chains. The control module monitors elapsed idle time and adjusts the threshold based on activity on the transmit chain, historical usage data, and other factors to determine optimal receive chain configuration.
2Speed
If diversity receive chains are continuously enabled to maintain high data rates, then data rate is improved, but battery life decreases
Solution Approach 1:
The system implements periodic monitoring of idle time and uses this information to periodically enable or disable diversity receive chains. The control module continuously monitors elapsed idle time and adjusts receive chain configuration based on whether the threshold is exceeded, creating a rhythmic pattern of operation that balances performance and power savings.
Solution Approach 2:
The control module uses feedback from multiple sources including elapsed idle time, activity on the transmit chain, and historical usage data to make informed decisions about receive chain configuration. This feedback mechanism allows the system to adapt to changing conditions and optimize battery life while maintaining adequate data rates.
3Use of energy by moving object
If receive chains are dynamically enabled and disabled to reduce power consumption, then power consumption is reduced, but system complexity increases
Solution Approach 1:
The control module segments the decision-making process into distinct factors: elapsed idle time monitoring, transmit chain activity detection, and historical usage data analysis. Each factor is processed separately and combined to determine receive chain configuration, making the complex control logic more manageable and systematic.
Solution Approach 2:
The system uses its own operational data (elapsed idle time, transmit chain activity, historical usage patterns) to automatically adjust its own configuration. The control module serves itself by using feedback from the system's own operations to make intelligent decisions about receive chain enable/disable states without requiring external intervention.
Data Source
AI summary
Methods, systems, and devices are described for receive chain diversity processing in a mobile wireless device. When data is not being received at the mobile device, the diversity receive chain(s) may be disabled in order to reduce power consumed at the mobile device. The diversity receive chain(s) may be enabled/disabled according to one or more different algorithms based on idle time from the receipt and/or transmission of data. The amount of idle time that triggers the disabling of a diversity receive chain may be adaptive based on historical usage of the mobile device, or based on activity on the transmit chain of the mobile device.