Wireless Module Gain Control for Interference Mitigation
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Solution Overview
Problem
Current wireless devices face performance degradation due to signal interference between co-existing wireless modules, such as Wi-Fi and Bluetooth, leading to reduced transmitting range, sensitivity issues, and poor signal-to-noise ratio, as existing solutions like power and gain adjustments are limited by transmitter-receiver isolation.
Innovation Solution
A control method for wireless devices that dynamically adjusts the receiver gain and transmitter power of each module based on real-time transmitter and receiver time information to mitigate interference, allowing for synchronized adjustments of receiver gain and transmitter power to optimize performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power of the transmitting signal is lowered to mitigate interference, then the receiving signal quality is improved, but the transmitting range decreases
Solution Approach 1:
The patent implements dynamic time-based control where the transmitting signal power is adjusted according to the operational state of the receiver. The transmitter operates at full power when the receiver is not processing signals, and reduces power only during receiver processing intervals, creating a dynamic adaptation that resolves the contradiction between maintaining high transmitting range and ensuring receiving signal quality.
2Power
If the gain of the receiver is lowered to mitigate interference, then the transmitting signal power can be maintained, but the sensitivity deteriorates and near-far issues occur
Solution Approach 1:
The receiver gain is dynamically adjusted based on the timing relationship between transmitter and receiver operations. The receiver operates at high gain when the transmitter is not transmitting, and reduces gain only during transmitter operation intervals. This dynamic approach maintains high receiver sensitivity while preventing interference degradation.
3Reliability
If the TX-RX isolation is increased to improve signal-to-noise ratio, then the receiving signal quality is improved, but the device complexity increases
Solution Approach 1:
The patent introduces time as an intermediary resource to separate transmitter and receiver operations. By using time-division coordination where the transmitter and receiver operate in alternating intervals, the system achieves effective isolation without requiring complex physical isolation structures, filters, or additional hardware components.
Solution Approach 2:
The patent replaces physical/isolation-based TX-RX separation mechanisms with a temporal coordination mechanism. Instead of using complex isolation structures, the system uses time-based control signals and coordination logic to achieve the same isolation effect, substituting mechanical/physical approaches with temporal/software-based approaches.
4Adaptability or versatility
If frequency division duplex is used to avoid signal collision, then the coexistence of wireless modules is improved, but the available channels are limited and performance degradation occurs
Solution Approach 1:
The patent merges the operation of multiple wireless modules (Wi-Fi and Bluetooth) into a coordinated time-division framework. Instead of treating them as separate systems requiring separate frequency resources, the invention combines their time schedules and coordinates their operations, allowing them to share the same frequency resources effectively while avoiding interference.
Data Source
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AI summary
The present invention provides a wireless module (110; 120) applied to a wireless device (100), wherein the wireless module (110; 120) comprises a receiver (112; 122), a transmitter (114; 124) and a control circuit (116; 126). The receiver (112; 122) is configured to receive a receiving signal (V1; V3) from an electronic device external to the wireless device (100), the transmitter (114; 124) is configured to transmit a transmitting signal (V2; V4), and the control circuit (116; 126) is configured to control a gain of the receiver (112; 122) and controlling a gain of the transmitter (114; 124). In the operations of the wireless module (110; 120), the controller (116; 126) refers to transmitter time information and a gain of a transmitter (124; 114) within another wireless module (120; 110) to determine an upper limit of the gain of the receiver (112; 122), and/or the controller (116; 126) refers to receiver time information and a gain of a receiver (122; 112) within the another wireless module (120; 110) to determine an upper limit of the gain of the transmitter (114; 124).