Bluetooth Low Energy
BLE Advertising vs Connected Data Transfer
Broadcast discovery and connected exchange serve different needs.
Broadcast discovery and connected exchange serve different needs. Choose the transfer model around reliability, interaction and power requirements.
Understand the exchange model
Advertising can expose discovery information or small data without maintaining a connection. Connected communication supports structured interaction between peers. Ordinary advertising does not provide an application acknowledgement that a particular gateway stored the reading.
Plan for missed and repeated data
For broadcasts, include identifiers and sequence information when needed for deduplication and gap detection. For connections, define reconnect behaviour and queue limits. Both approaches need an application policy for stale data and receiver outages.
Measure a representative workload
Test the expected number of sensors and receivers together. Compare current consumption, discovery time and completed data transfers under the actual settings. A single-device bench result may not reveal scanning gaps or connection scheduling limits in a larger installation.
FAQ
Is advertising data automatically private?
No. Do not broadcast sensitive information without an explicitly designed protection scheme.
Technical References
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