Bluetooth Receiver Slot Shifting for Periodic Polling Collisions
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Solution Overview
Problem
Wireless Bluetooth earbuds experience communication collisions due to periodic polling intervals between paired devices, affecting data integrity and power consumption.
Innovation Solution
A controller adjusts the transmission slot schedule by detecting periodic non-responsiveness and shifting the transmit clock slot to avoid collisions with polling operations, using a digital-to-analog converter, RF circuit, and power amplifier to process and amplify data packets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the primary earbud transmits POLL/Data packets to maintain connection with the secondary earbud, then the connection between earbuds is maintained, but communication collisions occur with data packets from the audio source, adversely affecting data integrity and power consumption
Solution Approach 1:
The system dynamically adjusts the polling interval between earbuds based on detected collisions with audio source communications. When collisions are detected, the polling interval is extended; when no collisions occur, it returns to the standard interval. This dynamic adjustment resolves the contradiction by making the connection maintenance adaptive to communication conditions, reducing unnecessary transmissions that consume power while maintaining reliability when needed.
Solution Approach 2:
The invention changes the temporal parameter (polling interval) of the earbud communication to avoid fixed periodic collisions with audio source data packets. By varying the polling interval based on detected collision patterns, the system achieves both reliable connection maintenance and reduced power consumption by eliminating redundant retransmissions.
2Loss of energy
If the primary earbud adjusts the polling interval to avoid collisions, then power consumption is reduced, but connection stability may be compromised
Solution Approach 1:
The system implements feedback by monitoring communication outcomes (collisions detected via retransmission patterns) and adjusting the polling interval accordingly. This closed-loop control ensures connection stability is maintained while optimizing power consumption, as the polling behavior adapts based on actual communication conditions rather than following a fixed schedule.
Solution Approach 2:
The polling interval transitions from a static fixed value to a dynamic parameter that adapts based on detected collision patterns. This dynamic behavior maintains connection stability by ensuring timely polling when needed while reducing power consumption by extending intervals when collisions are avoided, resolving the contradiction between stability and energy efficiency.
3Reliability
If the controller implements detection and adjustment of transmission slots based on periodic non-responsiveness, then data reliability is improved, but device complexity increases
Solution Approach 1:
The controller performs self-diagnosis by detecting its own transmission failures (periodic non-responsiveness) and automatically adjusts its transmission slot schedule without external intervention. This self-service capability improves data reliability by autonomously avoiding collision periods while adding minimal complexity, as the controller uses its existing monitoring functions for dual purposes.
Solution Approach 2:
The controller uses feedback from its own transmission outcomes (lack of response from receiver) to adjust its transmission schedule. This self-feedback mechanism enables the controller to identify periodic collision patterns and adapt its timing, improving data reliability with relatively simple logic that leverages existing communication protocol elements.
Data Source
AI summary
In one aspect, a method includes: transmitting, from a transmitter, a first packet to a device wirelessly coupled to the transmitter; in response to not receiving a response regarding the first packet from the device, retransmitting the first packet until a response is received; transmitting a plurality of second packets to the device, the second packets having a smaller width than the first packet; identifying a periodic polling interval at which the device communicates with another device; and adjusting a transmit clock slot and transmitting one or more third packets to the device according to the adjusted transmit clock slot.