What is Qci in LTE?

QoS Class Identifier (QCI) is a mechanism used in 3GPP Long Term Evolution (LTE) networks to ensure bearer traffic is allocated appropriate Quality of Service (QoS).

What is QCI in 5G?

5QI (5G QoS Identifier) is a pointer to a set of QoS characteristics such as priority level, packet delay or packet error rate, etc. (Please check the below snapshot). These QoS characteristics can either be standardized or non-standardized.

What is QCI and ARP?

The priority associated with each QCI is applied when packets are forwarded across the network. Higher-priority packets are transferred before lower-priority packets. … Each default bearer is associated with a QCI value, aggregate maximum bit rate (AMBR), and allocation and retention priority (ARP) value.

What is GBR and non GBR in LTE?

In LTE Dedicated bearers carry traffic for IP flows that have been identified to require a specific packet forwarding treatment. Dedicated bearers can be either GBR (Guaranteed Bit Rate) or non-GBR. … Non-GBR bearers can suffer packet loss under congestion while GBR bearers are immune to such losses.

What does QCI stand for?


Acronym Definition
QCI Quality Customer Interface
QCI Quality Control Index
QCI Quality Control Information
QCI Quality Conformance Inspections

Which QCI is used for VoLTE?

VoLTE Call Setup

Traditionally, a VoLTE user attachs to the LTE network using both QCI-9 and QCI-5. QCI-9 is the default bearer for data while QCI-5 acts as the default bearer for voice and it carries SIP signaling.

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What is Nssai in 5G?

Network Slice Selection Assistance Information (NSSAI) – The NSSAI is a collection of up to 8 S-NSSAIs. Single Network Slice Selection Assistance information (S-NSSAI) – It identifies a Network Slice. S-NSSAI = Slice/Service type (SST) + Slice Differentiator (SD).

What is reflective QoS in 5G?

Reflective QoS: Network decides on the QoS to apply on DL traffic, and UE reflects the DL QoS to the associated UL traffic. When UE receives a DL packet for which reflective QoS should be applied, the UE creates a new derived QoS rule. The packet filter in the derived QoS rule is derived from the DL packet.

How many Qci are there?

Standardized QCI .

QCI Service Type Examples service
3 GBR Non-Conversational video (buffered streaming)
4 GBR Real-time gaming
5 Non-GBR IMS signaling
6 Non-GBR Voice, Video (live streaming), interactive gaming
Wireless connection