Interface Details

PCF  SMF interface – PCF enables ADC at SMF

ADC related IEs from PCF to SMF:

appId: application identifier provided by PCF within PCC-Rule.

APP_STA and APP_STO: PCF provisions these triggers in Policy control request trigger.

muteNotif : Mute Notification. PCF may mute a notification about a specific detected application by including IE in "traffContDecs" and including a "refTcData" attribute referring to the Traffic Control Data decision within the PCC rule.

Example:

{  'sessRules': {'SessRule-1': {…}}}, 
    'pccRules': {
         'PccRule-1': {…},
         'crn#rda1': {'pccRuleId': 'crn#rda1', 'appId': 'x', reftcdata:”TCD-2”}},
    'qosDecs': {'QoS-1': {…}}
    'traffContDecs':{'TCD-2':{'tcId':'TCD-2','flowStatus':'DISABLED',’muteNotif‘:true}},
    ‘policyCtrlReqTriggers’:[‘PLMN_CH’,’AC_TY_CH’,’APP_STA’,’APP_STO’] }
}
Important

Unmuting a predefined rule is not supported.

Mute function is supported only during PolicyCreate and not during PolicyUpdate.

SMF  PCF -Reporting Start or Stop Trigger to PCF

SMF sends a SMPolicyControl_Update including detected application information in "appDetectionInfo" and "APP_STA" / ”APP_STO” within the "repPolicyCtrlReqTriggers" attribute.

When UPF optimization enabled, SMF does not filter APP_STA or APP_STO trigger and it sends all APP_STA or APP_STO triggered to PCF which are triggered by UPF. UPF optimization enabled by setting environment variable UPF_ADC_OPTIMIZED = true in SMF setup.

Definition of type AppDetectioninfo

Attribute Name

Data Type

P

Cardinality

Description

appId

String

M

1

Reference to the application detection filter configured at the UPF

InstanceId

String

O

1

Identifier dynamically assigned by SMF in order to allow correlation of the application Start and Stop events to the specific service data flow description, if service data flow descriptions are deducible.

sdfDescriptions

array(flow Information)

O

1...N

Contains the deducted service data flow descriptions if they are deducible.