Test scenario for Classic Bluetooth (BR/EDR)

Test Case

• Continuous Data Streaming over Classic Bluetooth (BR/EDR)

Objective

• To ensure that a Classic Bluetooth (BR/EDR) connection can handle continuous data streaming effectively without data loss or significant performance degradation.

Test Environment:

• Devices:
  • Two Bluetooth-enabled devices with BR/EDR support (e.g., smartphones, tablets, or specialized Bluetooth test devices).
  • This scenario does not apply to OOB OTA.
• Software:
  • Bluetooth communication application or test tool that supports continuous data transfer.
• Configuration:
  • Ensure both devices are paired and connected using Classic Bluetooth (BR/EDR).

Test Steps

1.Setup and Initialization:

• Pair Devices: Pair the two Bluetooth devices if not already paired.
• Establish Connection: Connect the devices using Classic Bluetooth (BR/EDR) in a data transfer mode (e.g., SPP - Serial Port Profile).

2. Test Preparation:

• Select Data Source: Choose or create a data source for streaming (e.g., a file with a known size or a data generator tool).
• Determine Stream Rate: Define the rate at which data will be sent (e.g., 1 MB per minute).

3.Continuous Data Streaming:

• Start Data Transmission: Begin streaming data from the source device to the target device.
• Monitor Data Transfer: Use monitoring tools or software to observe data transmission rates and ensure the data is being sent continuously. Example of a Root Cause Analysis

4.Metrics Collection:

• Measure Throughput: Record the data transfer rate (throughput) during the streaming process. Track Latency: Measure the latency of data packets (time taken for a packet to travel from the sender to the receiver).
• Monitor Errors: Check for any data errors, lost packets, or retransmissions.

5.Stress Testing:

• Increase Data Rate: Gradually increase the data transfer rate to test the limits of the Bluetooth connection.
• Vary Environment: Test in different environments to observe how factors like distance and obstacles affect data streaming.

6.Interruption Testing:

• Simulate Interference: Introduce potential sources of interference (e.g., other Bluetooth devices, Wi-Fi networks) and observe the impact on data streaming.
• Disconnection and Reconnection: Temporarily disconnect one device and reconnect to ensure that the streaming resumes correctly. Example of a Root Cause Analysis, youtube

7.Data Integrity Check:

• Verify Data: After the streaming is complete, verify that the received data matches the sent data without corruption or loss.
• Check File Integrity: If using a file-based approach, compare the original file with the received file for consistency.

---

Expected Results:

• Consistent Throughput: The data transfer rate should be consistent with the expected rate and should not fall below a specified threshold.
• Minimal Latency: Latency should be within acceptable limits as defined by the application or Bluetooth specification.
• No Data Loss: Data should be transmitted and received without loss or corruption.
• Stable Connection: The connection should remain stable throughout the streaming process, even under stress or interference conditions.

Reporting:

• Document the test results, including throughput, latency, any data loss or corruption, and the impact of environmental factors.
• Include screenshots or logs from monitoring tools if applicable.

In some Agile teams you will have a debriefing/retro in which you can contribute

• Provide recommendations based on test findings, such as improvements needed for better performance or stability.