Bluetooth Hands-Free Data Rate Switching for Longer Range
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Solution Overview
Problem
Cell phone communication quality diminishes as distance increases, particularly in hands-free modes, due to packet loss and increased power consumption, especially with Bluetooth connections.
Innovation Solution
Implementing dynamic data rate switching in wireless devices, negotiating primary and secondary data rates for effective communication, and retransmitting packets at lower rates when necessary to ensure successful transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the data rate is increased to improve communication speed, then productivity is improved, but reliability deteriorates due to increased packet loss
Solution Approach 1:
The patent implements dynamic data rate switching that allows the communication system to adaptively change between primary (higher rate) and secondary (lower rate) data rates based on channel conditions. This dynamic adjustment resolves the contradiction by enabling high-speed communication when conditions permit while automatically switching to more reliable lower rates when packet loss occurs.
Solution Approach 2:
The system changes the data rate parameter dynamically based on communication conditions. By negotiating and switching between multiple data rate parameters (primary and secondary rates), the system optimizes the trade-off between communication speed and reliability, achieving high productivity when possible while maintaining reliability through parameter adaptation.
2Ease of operation
If the communication range is increased to extend hands-free capability, then ease of operation is improved, but reliability deteriorates due to increased packet loss
Solution Approach 1:
The dynamic data rate switching mechanism enables the system to maintain reliable communication over extended ranges by automatically adjusting the data rate based on signal quality. As distance increases and channel conditions deteriorate, the system switches to more robust lower data rates, thereby extending the effective hands-free range while maintaining call quality.
3Reliability
If the data rate is optimized for quality to maintain call quality, then reliability is improved, but use of energy increases due to retransmissions
Solution Approach 1:
The system dynamically adjusts data rates to optimize the balance between call quality and power consumption. By switching to appropriate data rates based on channel conditions, the system maintains reliable communication while minimizing the need for retransmissions, thereby reducing overall power consumption compared to using a fixed high data rate that would require frequent retransmissions.
Data Source
AI summary
In one embodiment, a method includes: requesting, via a first device, a synchronous connection to be established between the first device and a second device wirelessly coupled to the first device; negotiating, with the second device, parameters of the synchronous connection, the parameters including at least one dynamic data rate switching parameter; and configuring a transceiver of the first device to operate with dynamic data rate switching based at least in part on the at least one dynamic data rate switching parameter.