Bluetooth Silent Indication Transmitter Control
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Solution Overview
Problem
Current wireless communication devices experience high power consumption and RF resource inefficiency during silent periods in voice calls due to the transmission of comfort noise, which also limits coexistence with other wireless technologies.
Innovation Solution
A method that involves sending a silent indication (SID) message from a modem to a Bluetooth module to disable the transmitter during silent periods, allowing for the reallocation of RF resources and reducing power consumption by stopping SCO link transmissions and inserting comfort noise only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If comfort noise is transmitted during silent periods, then listener comfort is improved, but power consumption increases and RF resources are reduced
Solution Approach 1:
The system transmits comfort noise periodically at reduced rates during silent periods rather than continuously, using silence indication messages to trigger transmissions only when needed, thereby reducing power consumption while maintaining listener comfort
Solution Approach 2:
The patent extracts the comfort noise transmission from continuous operation and separates it into discrete periodic transmissions triggered by silence detection, allowing the system to stop transmitting during silent periods when comfort noise is not needed
2Object-affected harmful factors
If comfort noise is transmitted during silent periods, then listener comfort is improved, but RF resource availability is reduced
Solution Approach 1:
The system uses periodic silence indication messages to trigger comfort noise transmissions only when silent periods are detected, freeing RF resources during active speech periods and other times when comfort noise is not required
Solution Approach 2:
The system dynamically adjusts RF resource allocation based on call state, activating comfort noise transmission only during detected silent periods and deactivating it during speech periods, thereby optimizing RF resource availability
3Reliability
If transmitter is kept active during silent periods, then communication readiness is maintained, but power consumption increases
Solution Approach 1:
The patent extracts the transmitter operation from continuous mode and separates it into discrete transmission events triggered by silence detection and comfort noise generation needs, allowing the transmitter to remain inactive during silent periods
Solution Approach 2:
The system uses local silence detection and comfort noise generation at the remote device, eliminating the need for continuous transmitter operation to maintain communication readiness during silent periods
Data Source
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AI summary
A method for wireless communication is described. The method includes receiving a silent indication (SID) start message from a modem at a Bluetooth (BT) module when the modem detects a silent period in a voice call. The method also includes sending the SID start message from the BT module to a remote BT device. The method further includes disabling a BT transmitter during the silent period based on the SID start message received from the modem.