Bluetooth GATT Service Reference
Indoor Positioning (0x1821)
The service shall be either a Primary Service or Secondary Service and the service UUID set to Indoor Positioning Service.
Quick Summary
No fixed value payload is declared in this XML; this entry defines metadata and profile structure. This page is generated from official GATT XML and presented as implementation-ready guidance.
At a Glance
Key reference details for BLE implementation, interoperability testing, and AI-assisted troubleshooting.
| Property | Value |
|---|---|
| Name | Indoor Positioning |
| UUID | 0x1821 |
| Type | org.bluetooth.service.indoor_positioning |
| XML Root | Service |
| Source File | org.bluetooth.service.indoor_positioning.xml |
| Field Count | 0 |
Characteristic List
Characteristics declared by this service profile entry.
| Characteristic | Type | Requirement | Properties |
|---|---|---|---|
| Indoor Positioning Configuration | org.bluetooth.characteristic.indoor_positioning_configuration | Mandatory | Read, Write, WriteWithoutResponse, ReliableWrite |
| Latitude | org.bluetooth.characteristic.latitude | Mandatory | Read, Write, WriteWithoutResponse, ReliableWrite, Broadcast |
| Longitude | org.bluetooth.characteristic.longitude | Mandatory | Read, Write, WriteWithoutResponse, ReliableWrite, Broadcast |
| Local North Coordinate | org.bluetooth.characteristic.local_north_coordinate | Optional | Read, Write, WriteWithoutResponse, ReliableWrite, Broadcast |
| Local East Coordinate | org.bluetooth.characteristic.local_east_coordinate | C3 | Read, Write, WriteWithoutResponse, ReliableWrite, Broadcast |
| Floor Number | org.bluetooth.characteristic.floor_number | Optional | Read, Write, WriteWithoutResponse, ReliableWrite, Broadcast |
| Altitude | org.bluetooth.characteristic.altitude | Optional | Read, Write, WriteWithoutResponse, ReliableWrite, Broadcast |
| Uncertainty | org.bluetooth.characteristic.uncertainty | Optional | Read, Write, WriteWithoutResponse, ReliableWrite, Broadcast |
| Location Name | org.bluetooth.characteristic.location_name | Optional | Read, Write, WriteWithoutResponse, ReliableWrite, Broadcast |
Use Cases and Integration Notes
Service Discovery
Use this definition to validate discovered services and expected characteristics during BLE onboarding.
Profile Compliance
Cross-check required characteristics and properties for conformance and QA automation.
App Capability Gating
Drive feature availability in apps based on whether service-level requirements are present.
Implementation Checklist
- Validate the service UUID during discovery before reading characteristic metadata.
- Ensure mandatory characteristics exist and expose expected properties.
- Map declaration data to app feature flags before attempting writes/subscriptions.
- Record mismatches between firmware tables and expected profile definitions in logs.
Dependencies
- This service has no dependencies on other GATT-based services.
FAQ
What is Indoor Positioning in Bluetooth GATT?
Indoor Positioning is defined as a Bluetooth GATT service entry with type org.bluetooth.service.indoor_positioning and UUID 0x1821.
What UUID identifies Indoor Positioning?
The UUID for Indoor Positioning is 0x1821.
How should I parse Indoor Positioning?
Parse the structure and requirements from the XML definition, then enforce format/requirement rules in your BLE stack.
Where does this definition come from?
This page is generated from the Bluetooth SIG mirror XML in the oesmith/gatt-xml repository.
How does this page support BLE implementation?
The page combines structured tables, practical Q&A, and JSON-LD metadata to help teams validate integrations and troubleshoot consistently.