Dynamic Channel Bandwidth Adjustment in Wireless Terminals
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Solution Overview
Problem
Existing wireless communication systems, particularly those using ultra-wideband OOK modulation, suffer from high power consumption due to fixed channel bandwidths, leading to inefficiencies in good channel environments and interference issues when all channels are occupied, limiting the number of devices that can communicate simultaneously.
Innovation Solution
A wireless communication terminal that dynamically adjusts its channel bandwidth by dividing the ultra-wideband frequency band into multiple channels and sub-channels, using a power sensor and filter to adjust the frequency bandwidth based on signal power levels, allowing for real-time allocation of available sub-channels to new devices entering the communication range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the channel bandwidth is fixed to optimize communication state, then communication performance is improved, but power consumption increases in good channel environments
Solution Approach 1:
The patent implements dynamic channel bandwidth adjustment by allowing the wireless communication terminal to change its channel bandwidth based on real-time channel environment conditions. The terminal can switch between different bandwidth modes (e.g., 500 MHz, 200 MHz, 100 MHz) to adapt to varying signal conditions, thereby optimizing communication performance while reducing power consumption in good channel environments.
Solution Approach 2:
The patent changes the physical parameter of channel bandwidth dynamically. By adjusting the bandwidth parameter according to channel quality metrics (such as signal-to-noise ratio), the system achieves better communication reliability when needed and reduces power consumption when channel conditions are favorable, directly addressing the contradiction between performance and energy usage.
2Device complexity
If the channel bandwidth is fixed, then channel allocation is simple, but interference occurs when all channels are occupied by transmitter-receiver pairs
Solution Approach 1:
The patent enables dynamic channel bandwidth adjustment that allows newly-entering wireless communication terminals to access available bandwidth when all traditional channels are occupied. By dynamically expanding or reallocating bandwidth resources, the system prevents communication failures and interference that would occur with fixed channel allocation, while maintaining manageable system complexity through centralized control.
3Productivity
If the channel bandwidth is widened to allow more terminals to communicate, then the number of simultaneous communications increases, but power consumption increases
Solution Approach 1:
The patent implements dynamic bandwidth allocation where the channel bandwidth is adjusted based on the number of active terminals and channel conditions. When more terminals need to communicate, the system dynamically allocates additional bandwidth resources rather than maintaining a fixed wide bandwidth, thereby increasing productivity only when necessary and reducing power consumption when fewer terminals are active.
Data Source
AI summary
A wireless communication terminal and a method for controlling power and using a channel by adjusting a channel bandwidth of the wireless communication terminal. The wireless communication terminal generates a plurality of channels by dividing at least part of a frequency band for ultra-wideband communications to a plurality of frequency bands, receives a chaotic signal having a plurality of frequency components in the channels, and adjusts a frequency bandwidth which forms the channel when a certain condition is satisfied. Accordingly, since the chaotic carrier is transmitted and received in the narrow frequency band by adjusting the frequency bandwidth, the power consumption can be reduced drastically and the high-quality communications are feasible between the portable terminal and the wireless headset in the optimized channel environment. Furthermore, a greater number of portable terminals and wireless headsets can execute the radio communications in a certain wireless communication range.