Adaptive Receive Diversity Control for Wireless Power Reduction
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Solution Overview
Problem
Wireless communication devices face challenges in reducing power consumption while maintaining high data rates, as the use of multiple receive and transmit chains enhances data transmission rates but increases power consumption, particularly in battery-operated devices.
Innovation Solution
The implementation of adaptive receive diversity control, which involves retrieving historical communications information to determine the optimal number of receive chains to enable in discontinuous reception mode, allowing for efficient power management by adjusting the number of receive chains based on past communication data to minimize power usage during idle modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple receive chains are used to enhance data transmission rates, then data rates are improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the number of active receive chains based on real-time channel conditions and historical performance data. The diversity order is adaptively selected to match current communication requirements, enabling the device to use more receive chains when high data rates are needed and fewer chains when power conservation is prioritized, thus resolving the contradiction between productivity and energy consumption
Solution Approach 2:
The invention changes the operational parameters of the receive chains by adjusting the diversity order based on historical communications information and channel quality indicators. By modifying parameters such as the number of active receive chains and their configuration, the system optimizes the balance between data transmission rate and power consumption for battery-operated devices
2Reliability
If multiple receive chains are enabled continuously, then communication reliability is improved, but battery life is reduced
Solution Approach 1:
The system implements periodic evaluation of channel conditions and historical communications information to determine the optimal diversity order. Rather than continuously operating all receive chains, the device periodically assesses whether multiple chains are needed based on current conditions, enabling reliable communication only when necessary and conserving battery life during periods when single-chain operation suffices
Solution Approach 2:
The invention applies partial action by selectively activating only the necessary number of receive chains based on current communication requirements. Instead of always using all available receive chains for maximum reliability, the system uses just enough chains to maintain acceptable communication reliability, thereby extending battery life while still providing sufficient communication assurance
Data Source
AI summary
Methods and devices performing the method for wireless communications are disclosed, where the method includes retrieving historical communications information for a plurality of receive chains for receiving communications from a wireless node; determining a number of receive chains from the plurality of receive chains to enable in a discontinuous reception mode based on the historical communications information; and enabling the number of receive chains to receive a communication from the wireless node in a communications cycle. Other aspects, embodiments, and features are also claimed and described.