What is 5QI (5G QoS identifier)?

The 5G QoS Identifier (5G QoI ) is used by 3GPP to identify QoS (Quality of service) behavior. Each QoS flow is identified by its identifier which is named as QoS identifier. 5G QoI values are standardized values which are specified for services that are frequently used in 5G networks. 5G resource types are categorized as GBR (Guaranteed bit rate ) and NGBR (Non Guaranteed bit rate).5QI values are different for GBR and NGBR services.