Feature Description
To support the dedicated bearer on QCI 80 (QoS Class Identifier), SMF must support application detection and control (ADC) feature.
On receiving a PCC rule for application detection and control, with an application-Id and APP_STA/APP_STO provisioned in Policy-control-request-trigger, SMF instructs the UPF to detect the application traffic. When the application traffic is identified by an application identifier received from the UPF, SMF reports the start of the application to the PCF. Then, PCF makes the policy decisions based on the information received and installs a new dedicated PCC rule with QCI 80 to SMF.
SMF supports the following functionalities:
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Enable and disable ADC from PCF.
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Report APP_START and APP_STOP to PCF based on application traffic detection at UPF.
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Mute application detection.
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Process applications START, STOP from UPF in session report and triggering APP_STA/APP_STO toward the PCF.
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Detect application for L3, L4, and L7 rules.
Dynamic QoS Flow Based Application Detection and Control is applicable to both roaming and non-roaming scenarios.