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5G SA Mobile Networks RFCs & Standards SDM Security

Some thoughts on NRF Security in 5G Core

A look at attack vectors the NRF opens up in #5G Core networks, and the mitigations recommended by 3GPP.

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5G SA Mobile Networks RFCs & Standards SDM

If you like Pina Coladas, and service the control plane – Intro to NRF in 5GC

Looking for Love in the 5G Core?

Are you a lonely UDM from MCC 001 MNC 001, just looking for a connection?

PLMN 901/70, NRF, seeks same.

Let’s look at our matchmaker – The Network Repository Function in 5G Core.

Categories
5G SA Mobile Networks

GTP Extension Headers (PDU session user plane protocol) in 5GC

How GTP is extended in 5G Core Networks to support extra QoS functionality like Reflective QoS and Delay Indicators

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5G SA Mobile Networks

Framed Routing in 5G

5GC includes native support for framed-routing.

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5G SA Mobile Networks

Reflective QoS in 5G

A great new feature of #5G Core Networks is Reflective QoS – Where QoS of the traffic coming to a UE is reflected on the QoS coming out.

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5G SA Mobile Networks

SMS in 5GC

The first SMS was sent in 1993, and all these years later as 5G rolls out, we’re still supporting it.

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5G SA Mobile Networks RFCs & Standards

5G Online Charging with the Nchf_ConvergedCharging SBI

There’s no such thing as a free lunch, and 5G is the same – services running through a 5G Standalone core need to be billed. In 5G Core Networks, the SMF (Session Management Function) reaches out to the CHF (Charging Function) to perform online charging, via the Nchf_ConvergedCharging Service Based Interface (aka reference point). Like […]

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5G SA Mobile Networks SDM

EIR in 5G Networks (N5g-eir_EquipmentIdentityCheck)

A look at the Equipment Identity Register in 5G Core

Categories
EPC LTE Mobile Networks SDM SIM Cards

PS Data Off

How turning mobile data off, doesn’t, in LTE and 5G.

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5G SA EPC EUTRAN LTE Mobile Networks RFCs & Standards SDM Security SIM Cards

The PLMN Problem for Private LTE / 5G

As the number of Private Networks built on LTE and 5G grow, how will PLMN allocation be managed?

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5G SA EPC EUTRAN GSM LTE Mobile Networks RFCs & Standards

Pre-5G Network Slicing

5G introduces Network Slicing, or does it? A look at slicing mechanisms widely used in pre-5G networks.

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5G SA Mobile Networks RFCs & Standards

5Gethernet? – Transporting Non-IP data in 5G

A look at non-IP transport for 5G including Ethernet.

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5G SA EPC LTE Mobile Networks SDM Software

Open5Gs Database Schema Change

New database time to support slicing and a migration path for existing users.

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5G SA EPC LTE Mobile Networks

MTU in LTE & 5G Transmission Networks – Part 1

A look at MTU and its role in LTE and 5G Transmission.

Categories
5G SA Mobile Networks SDM Security SIM Cards

5G Subscriber Identifiers – SUCI & SUPI

Acronyms and cryptography – a look at Subscriber Identifiers in 5G

Categories
5G SA Mobile Networks

My first 5G Core: Open5Gs and UERANSIM

Note: As this space develops so quickly I’ve refreshed the original post from November 2021 in March 2021 with updated instructions. While 5G SA devices are still in their early stages, and 5G RAN hardware / gNodeBs are hard to come by, so today we’ll cover using UERANSIM to simulate UEs and 5G RAN, to […]

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5G SA Mobile Networks

Open5GS – NRF Setup

Configuring the NRF for Open5GS

Categories
5G SA Mobile Networks RFCs & Standards

5GC: The Network Function Repository Function

A look at the Network Function Repository Function (NRF) in 5G Core

Categories
5G SA EPC Mobile Networks RFCs & Standards

5GC for EPC Folks – Control Plane Signalling

Comparing the Control Plane signalling in 5GC compared to EPC.

Categories
5G SA EPC Mobile Networks RFCs & Standards

5GC for EPC Folks – User Plane Traffic

How User Plane traffic is handled in 5GC compared to EPC