Reduce latency with this new hack in 2025

Latency is one of the most critical factors in BLE applications, especially for real-time systems like gaming controllers, musical instruments, and health monitoring devices.

Understanding BLE Latency

BLE latency is determined by several factors:

1. Connection Interval - The time between connection events
2. Advertising Interval - How often a device advertises
3. Scan Window and Interval - How the central device scans for peripherals

Optimization Techniques

1. Reduce Connection Interval

The connection interval directly affects how quickly data can be exchanged. A shorter interval means lower latency but higher power consumption.

2. Use Connection Parameter Updates

After establishing a connection, you can request parameter updates to optimize for your specific use case.

3. Implement Write Without Response

For one-way data transmission where acknowledgment isn't critical, using Write Without Response can significantly reduce latency.

4. Optimize MTU Size

Larger MTU sizes allow more data per packet, reducing the number of round trips needed for large transfers.

Best Practices

• Profile your specific use case
• Test across multiple devices
• Consider the trade-off between latency and power consumption
• Use appropriate connection parameters for your application

With these techniques, you can achieve sub-10ms latency for most BLE applications.