An overview of the who, how and why of Non-IP Data Deliver in NB-IoT cellular services.
Tag Archives: EUTRAN
Filtering for 3GPP DNS in Wireshark
Filtering for 3gppnetwork.org domains in Wireshark to make your troubleshooting easier
Evolved Packet Core – Analysis Challenge
Step right up folks and test your skills on EPC with this PCAP analysis challllleeennnggeee!
How UEs get Time in LTE
How does “Network Time” actually get to the UE?
PyHSS Update – SCTP Support
Info on PyHSS new support for SCTP as well as TCP.
MTU in LTE & 5G Transmission Networks – Part 1
A look at MTU and its role in LTE and 5G Transmission.
Enable GPS/GLONASS Sync on Huawei BTS3900
Our BTS is going to need an accurate clock source in order to run, so without access to crazy accurate Timing over Packet systems or TDM links to use as reference sources, I’ve opted to use the GPS/GLONASS receiver built into the LMPT card. Add new GPS with ID 0 on LMPT in slot 7 … Continue reading Enable GPS/GLONASS Sync on Huawei BTS3900
Huawei BTS 3900 LMPT Basic Config
This post is one in a series documenting my adventures attempting to configure a used BTS 3900 to function as a eNB in my lab. There are 5 network ports on the LMPT card: 2x SFP cages – SFP 0 and SFP 1 1x 10/100 Ethernet port – ETH – Used to access the Local … Continue reading Huawei BTS 3900 LMPT Basic Config
Huawei BTS3900 – MML Basics
Learning Huawei’s flavour of MML – Man Machine Language for the BTS 3900 series Macro Base Stations.
DIY RAN Adventures – Antennas
Picking and validating antenna selection for the new RAN project in my lab.
Viewing the SIB – The LTE System Information Block with SDRs
Using SDR hardware to view the LTE System Information Block’s contents.
Working with LTE MAC traces in Wireshark
Using Wireshark to view and analyze MAC layer LTE traffic
Multi Operator Core-Networks (MOCN) for RAN Sharing
Multi-tenancy on the RAN side of the network, allowing an eNB to broadcast multiple PLMN IDs (MCC/MNC) in the System Information Block (SIB).
BaiCells Neutrino eNB Setup
Configuring BaiCells Neutrino eNB
SRS LTE – Software Defined LTE Stack with BladeRF x40
Using SRS LTE Stack with the BladeRF x40 Software Defined Radio (SDR)
PLMN Identifier Calculation (MCC & MNC to PLMN)
How to encode and decode MCC and MNC as PLMN Identifiers
Querying Auth Credentials from USIM/SIM cards
Using osmo-sim-auth to query USIM/SIM cards authentication mechanism.
HSS & USIM Authentication in LTE/NR (4G & 5G)
Exploring the how and why of Authentication in LTE & NR networks.
LTE / EUTRAN – Idle Detach
Overview of the packet flow for a UE Idle detach from the network.
Subscribed-Periodic-RAU-TAU-Timer
Periodic Tracking Area Update timer purpose
Random Posts on
5GC for EPC Folks – User Plane Traffic
IMTx: NET02x (4G Network Essentials) – Radio Interface – 6. Random Access
Being mean to Mikrotiks – Pushing SMB File Share
SNgrep – Command line SIP Debugging
IBM Watson – Speech to Text (SST)
Kamailio Bytes – Rewriting SIP Headers (Caller ID Example)
PyHSS Update – MongoDB Backend & SQN Resync
The Anti-Digit Dialing League
IMTx: NET02x (4G Network Essentials) – Radio Interface – 7. PDCP & Global Vision
