How 5G core network controls and mangages mobile subscribers data packages?


Each one of 5G NSA mobile network subscriber has his own monthly/weekly/daily data package plan, in which he has chosen within his contract with his mobile service provider.

Many mobile operators’ strategies indicate that when the subscriber consumes his monthly data package plan in less than one month, the mobile operator would still give this user the access to 5G data service but with relatively reduced data connection speed.

For example, a subscriber has in his contract a monthly data package of 5 GB, if he consumes the 5 GB in 10 days, then his data connection speed will be downgraded from the Aggregate Maximum Bit Rate (AMBR) to 64 kbps (AMBR is the aggregate maximum bit rate that the 5G network can offer, can be for example 1 Gbps).

But have we ever thought, how the 5G NSA core network, manages, assigns, controls this data package plan? And how the network will throttle the user data session connection speed from the AMBR to 64 kbps? We will go in deep dive, how the CHF (Charging Function), SMF (Session Management Function), PCF (Policy Control Function) and UPF (User Plane Function) orchestrate together to achieve seamless 5G data session experience, as this topic may have a lot of details, we will explain this topic within two articles.

When a user starts a data session, the subscribed user data package won’t be granted to the user at once ,but the CHF will grant ‘data Unit’ called quota based on traffic usage reporting sent from UPF to the SMF , then the SMF will request CHF to grant quota for the ongoing data session , this achieved through Nchf_ConvergedCharging service which provides charging in converged charging scenario by the CHF to the Network Function (NF) service consumer (in our case SMF) , it includes the following functionalities :

◾️ Nchf_ConvergedCharging_Create Request
◾️ Nchf_ConvergedCharging_Upate Request
◾️ Nchf_ConvergedCharging_Release Request
◾️ Charging information record generation

We will discuss in this article Nchf_ConvergedCharging_Create procedure, for the rest of procedures, we will go through them in next articles.

Figure 1 illustrates the converged charging create signalling procedure.

My-communication Academy

How 5G core network controls and mangages mobile subscribers data packages?


Each one of 5G NSA mobile network subscriber has his own monthly/weekly/daily data package plan, in which he has chosen within his contract with his mobile service provider.

Many mobile operators’ strategies indicate that when the subscriber consumes his monthly data package plan in less than one month, the mobile operator would still give this user the access to 5G data service but with relatively reduced data connection speed.

For example, a subscriber has in his contract a monthly data package of 5 GB, if he consumes the 5 GB in 10 days, then his data connection speed will be downgraded from the Aggregate Maximum Bit Rate (AMBR) to 64 kbps (AMBR is the aggregate maximum bit rate that the 5G network can offer, can be for example 1 Gbps).

But have we ever thought, how the 5G NSA core network, manages, assigns, controls this data package plan? And how the network will throttle the user data session connection speed from the AMBR to 64 kbps? We will go in deep dive, how the CHF (Charging Function), SMF (Session Management Function), PCF (Policy Control Function) and UPF (User Plane Function) orchestrate together to achieve seamless 5G data session experience, as this topic may have a lot of details, we will explain this topic within two articles.

When a user starts a data session, the subscribed user data package won’t be granted to the user at once ,but the CHF will grant ‘data Unit’ called quota based on traffic usage reporting sent from UPF to the SMF , then the SMF will request CHF to grant quota for the ongoing data session , this achieved through Nchf_ConvergedCharging service which provides charging in converged charging scenario by the CHF to the Network Function (NF) service consumer (in our case SMF) , it includes the following functionalities :

◾️ Nchf_ConvergedCharging_Create Request
◾️ Nchf_ConvergedCharging_Upate Request
◾️ Nchf_ConvergedCharging_Release Request
◾️ Charging information record generation

We will discuss in this article Nchf_ConvergedCharging_Create procedure, for the rest of procedures, we will go through them in next articles.

Figure 1 illustrates the converged charging create signalling procedure.

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460 viewsMay 14 at 08:00