Connecting to a Huawei BTS3900
Nick Meta: This post is a series chronicling my adventures with a second hand Huawei BTS3900 I purchased. You can find an index of these posts here. So you purchased a…
LTE
DIY RAN Adventures – Antennas
Picking and validating antenna selection for the new RAN project in my lab.
My used Huawei BTS3900 LTE RAN Adventure – The Impulse Purchase
How I ended up with a Macro LTE eNodeB (Huawei BBU3900) and getting it running.
5GC for EPC Folks – Control Plane Signalling
Comparing the Control Plane signalling in 5GC compared to EPC.
5GC for EPC Folks – User Plane Traffic
How User Plane traffic is handled in 5GC compared to EPC
LTE EPC: Packet Gateway (P-GW) Basic Function
The Packet Gateway's purpose in the EPC.
LTE EPC: Serving Gateway (S-GW) Basic Function
Basic processes and functions of the LTE EPC Serving Gateway (S-GW).
Open5GS EPC: Static IP Addresses for UEs / APNs / Subscribers
Assigning static IPs to UEs in Open5GS
CUPS – Control and User Plane Separation in LTE & NR with PFCP (Sx & N4)
A look at PFCP for the Sx and N4 Interfaces
Wireshark Filtering S1AP to find Subscriber Signaling
Using Wireshark to filter S1 messaging to find signalling from a specific subscriber,
List of Open Source Evolved Packet Core (EPC) Implementations
List of Open Source Evolved Packet Core implementations
Android Carrier Privileges
Unlocking Carrier Privileges through certificate on a UICC
Getting TEID up with GTP Tunnels
What's the deal with Tunnel Endpoint Identifiers and what do they do?
Diameter Dispatches: S6a Authentication Information Request / Answer
This is part of a series of posts focusing on common Diameter request pairs, looking at what’s inside and what they do. The Authentication Information Request (AIR) and Authentication Information…
S1AP – Relative Capacity (87) on MME
Functionality of eNB MME selection based on Relative Capacity IE
Viewing the SIB – The LTE System Information Block with SDRs
Using SDR hardware to view the LTE System Information Block's contents.
Open5GS EPC: SGW selection by eNodeB ID / TAC
Using the new functionality in Open5Gs to select S-GW based on TAC or eNB ID.
Diameter Dispatches – Origin-State-Id AVP
What the Origin-State-Id AVP does and how it is used to track if a Diameter peer restarts.
BaiCells USIM PLMN Issues (MCC 314 / MNC 030 vs MCC 311 / MNC 98)
Why the BaiCells PLMN changes?
LTE UE Attach Procedures in Evolved Packet Core (EPC)
A look into the signalling messages between Network elements in an Evolved Packet Core exchanged during the Attach Procedure