Passive Precision Time over BLE: V14-RC1 Candidate Service and Profile Proposal

Overview

The V14 proposal describes passive time profiles, authenticated grandmaster coordination and boundary-clock relays. A capable receiver associates a captured radio event with follow-up information; a relay disciplines its own clock and originates another timing train while retaining root provenance.

What this paper covers

• The relationship between event capture, follow-up information and the receiver clock.
• Why public time reception and authorized coordination have different responsibilities.
• How boundary-clock relays carry root identity through a timing mesh.

Research scope

This is a protocol proposal, not an adopted Bluetooth SIG or IEEE standard. A described profile or deployment is not a measurement of range, continuous availability, multi-hop precision or interoperability.

Read it in context

Use the proposal for protocol concepts and wire-level intent. Pair it with the research paper for the measured V14 relay population, or the deployment guide for an approachable explanation of operating roles.