Communication Terminal Signal Interference Control via Time-Division Multiplexing
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Solution Overview
Problem
Existing mobile terminals face signal interference issues when multiplexing GPS, Bluetooth, and WLAN functions due to differing power levels and noise thresholds, leading to saturation and impaired functionality.
Innovation Solution
A communication terminal design that includes separate antennas and communication modules, with the ability to generate control signals to stop transmission of one module's signals during the transmission of another module's signals, thereby reducing interference by controlling signal timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If GPS, Bluetooth, and WLAN functions are multiplexed on a single terminal, then the terminal size is reduced, but signal interference occurs between modules due to differing power levels and noise thresholds
Solution Approach 1:
The patent implements dynamic control of communication modules by detecting active transmission states and adjusting operational status in real-time. When GPS is actively receiving signals, the system dynamically disables Bluetooth and WLAN transmissions, and vice versa, creating adaptive time-division multiplexing that prevents interference while maintaining compact terminal design
Solution Approach 2:
The system employs periodic status detection and control signal generation, where communication modules are periodically monitored for active transmission states. Control signals are generated at regular intervals to switch between modules based on their operational status, creating a rhythmic pattern of activation and deactivation that prevents simultaneous interference
2Measurement precision
If GPS LNA operates with low input power (≤−20 dBm) and low background noise (≤−85 dBm/Hz), then GPS signal reception is optimized, but Bluetooth (0 dBm) and WLAN (15 dBm) transmissions cause saturation in the GPS LNA
Solution Approach 1:
The system applies preliminary anti-action by detecting when GPS is in active reception mode before Bluetooth or WLAN transmissions begin. Control signals are generated in advance to prevent Bluetooth/WLAN transmissions during GPS reception periods, thereby preemptively avoiding the saturation effect that would otherwise degrade GPS signal quality
Solution Approach 2:
A control signal mechanism acts as an intermediary between communication modules. When GPS active reception is detected, the control system generates inhibition signals that prevent Bluetooth and WLAN transmissions, mediating between the conflicting power levels to protect the sensitive GPS LNA from saturation while allowing other modules to function normally
3Power
If GSM transmission is activated with high power, then cellular communication is enabled, but GPS, Bluetooth, and WLAN signals are interfered with
Solution Approach 1:
The system implements dynamic mutual exclusion control where GSM transmission status is continuously monitored. When GSM high-power transmission is detected, the system dynamically disables GPS reception, Bluetooth, and WLAN operations. Conversely, when GPS is actively receiving, GSM transmission is inhibited, creating adaptive time-division multiplexing that allows high-power GSM operation when needed while protecting sensitive receivers during their active periods
Data Source
AI summary
A communication terminal and a method for controlling data communication are provided by embodiments of the invention, relating to the field of communication technology. The communication terminal comprises: a first communication module adapted to, when transmitting a first communication signal to a first antenna, generate a first communication control signal for controlling a second communication module; and a second communication module adapted to receive the first communication control signal, and stop the transmission of a second communication signal between the second communication module and a second antenna in accordance with the first communication control signal. In the embodiments of the invention, respective signals of the first communication module and the second communication module are controlled to be transmitted in different times, thus signal interferences between the communication modules on the terminal are reduced.