13.2 QoS Profile Purpose

Go To Phase 0 QoS Profile Model

Phase 0 uses QoS profiles to make communication behavior explicit.

A QoS profile identifies the communication behavior expected for a selected Runtime Plane or Topic family. It allows implementation participants to use consistent settings for reliability, durability, history, ordering, liveliness, deadlines, resource limits, and related DDS concerns where Phase 0 requires those concerns.

The QoS Profile Model supports:

• Consistent DDS behavior across implementation participants;
• Traceability from Runtime Plane purpose to communication behavior;
• Review of Topic compatibility between publishers and subscribers;
• Repeatable configuration of DDS participants, publishers, subscribers, writers, and readers;
• Later deployment and testability planning; and
• Evidence planning for communication behavior.

The Phase 0 QoS Profile Model defines only the QoS discipline needed for the Phase 0 implementation baseline. Later development phases may extend, refine, supersede, or replace these profiles.