3GPP 23.501 v20.2.0 — the document's own text
5.7.1.2 QoS Profile
Taught in 14. What the network promises (The 5G system architecture, in depth), 5. The connection, and what is promised on it (The 5G system architecture, overview).
A QoS Flow may either be 'GBR' or 'Non-GBR' depending on its QoS profile. The QoS profile of a QoS Flow is sent to the (R)AN and it contains QoS parameters as described below (details of QoS parameters are described in clause 5.7.2):
- For each QoS Flow, the QoS profile shall include the QoS parameters:
- 5G QoS Identifier (5QI); and
- Allocation and Retention Priority (ARP).
- For each QoS Flow, the QoS profile may also include the QoS parameters:
- PDU Set QoS Parameters (described in clause 5.7.7).
- For each Non-GBR QoS Flow only, the QoS profile may also include the QoS parameter:
- Reflective QoS Attribute (RQA).
- For each GBR QoS Flow only, the QoS profile shall also include the QoS parameters:
- Guaranteed Flow Bit Rate (GFBR) - UL and DL; and
- Maximum Flow Bit Rate (MFBR) - UL and DL; and
- In the case of a GBR QoS Flow only, the QoS profile may also include one or more of the QoS parameters:
- Notification control;
- Maximum Packet Loss Rate - UL and DL.
NOTE: In this Release of the specification, the Maximum Packet Loss Rate (UL, DL) is only provided for a GBR QoS Flow belonging to voice media.
Each QoS profile has one corresponding QoS Flow identifier (QFI) which is not included in the QoS profile itself.
The usage of a dynamically assigned 5QI for a QoS Flow requires in addition the signalling of the complete 5G QoS characteristics (described in clause 5.7.3) as part of the QoS profile.
When a standardized or pre-configured 5QI is used for a QoS Flow, some of the 5G QoS characteristics may be signalled as part of the QoS profile (as described in clause 5.7.3).