SoftAP Antenna Mode Switching for Power Optimization
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Solution Overview
Problem
Current softAP implementations face challenges in power optimization, as duty-cycling to save power can impact AP discoverability and result in packet loss when multiple clients are connected, especially in wireless communication networks.
Innovation Solution
The solution involves dynamically changing antenna modes based on the power states of associated wireless nodes, switching from a multi-stream mode to a single-stream mode when all nodes are in a low power state to conserve battery life, and quickly reverting to a multi-stream mode when necessary, without turning off the AP entirely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If duty-cycling is used to save power, then power consumption is reduced, but AP discoverability deteriorates and packet loss increases
Solution Approach 1:
The patent applies dynamics by making the antenna mode configurable and adaptable based on client presence. The system dynamically switches between single-stream mode (for power saving when no clients are connected) and multi-stream mode (for optimal performance when clients are connected), resolving the contradiction between power consumption and reliability.
Solution Approach 2:
The patent changes the antenna mode parameter from a fixed state to a variable state that can be adjusted based on operational conditions. By monitoring client connection status and switching between single-stream and multi-stream modes, the system optimizes both power consumption and communication reliability.
2Reliability
If multi-stream mode is used continuously, then communication reliability is maintained, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the antenna mode based on real-time client connection status. When clients are connected, multi-stream mode is activated to ensure communication reliability. When no clients are connected, the system switches to single-stream mode to conserve battery life, thus resolving the contradiction between maintaining reliability and reducing power consumption.
Solution Approach 2:
The system periodically monitors client connection status and adjusts antenna mode accordingly. This periodic assessment allows the system to switch between multi-stream and single-stream modes, ensuring reliability when needed while saving power during idle periods.
Data Source
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AI summary
Systems and methods for wireless communications are disclosed. More particularly, aspects generally relate to an apparatus for wireless communications. The apparatus generally includes an interface for communicating with a plurality of wireless nodes via a plurality of antennas, and a processing system configured to determine a power state of each of the plurality of wireless nodes, and change from a first antenna mode used for communicating with the wireless nodes using a first number of spatial streams to a second antenna mode used for communicating with the wireless nodes using a second number of spatial streams, based on the determined power states of the wireless nodes