Categories
5G SA EUTRAN Mobile Networks RF

Inside a 32×32 MIMO Antenna

A peek under the radome of 32×32 5G Active Antenna Unit

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EUTRAN Mobile Networks RF

Ericsson & Nokia RRU Power Connectors – Wiring and Tricks

Assembling Amphenol RRU power connectors and modifying them to work with Ericsson and Nokia RRUs.

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EPC EUTRAN LTE Mobile Networks RFCs & Standards Software

NB-IoT NIDD Basics

An overview of the who, how and why of Non-IP Data Deliver in NB-IoT cellular services.

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EUTRAN LTE Mobile Networks RF

Huawei Baseband Cheat Sheet

Quick reference guide for the types and capacities of Huawei BBU 3900 Series cards

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EPC EUTRAN IMS / VoLTE LTE Mobile Networks

Lifecycle of a Dedicated Bearer – From Flow-Description AVP to Traffic Flow Templates

A look at how Dedicated Bearers get established for VoLTE.

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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 EPC EUTRAN GSM LTE Mobile Networks RFCs & Standards Security

And the call was coming from… INSIDE THE HOUSE. A look at finding UE Locations in LTE

How to find a subscriber location within the network.

Categories
EUTRAN Mobile Networks

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 […]

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EPC EUTRAN LTE Mobile Networks RFCs & Standards

Cell Broadcast in LTE

A look at how Cell Broadcast is signalling implemented between the MME and CBC in an LTE/EPC network.

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EUTRAN LTE Mobile Networks

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 […]

Categories
EUTRAN LTE Mobile Networks RF

Huawei BTS3900 – MML Basics

Learning Huawei’s flavour of MML – Man Machine Language for the BTS 3900 series Macro Base Stations.

Categories
EUTRAN LTE Mobile Networks

Connecting to a Huawei BTS3900

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 used Macro base station online, good for you. Now you need to know how to configure it. First things first, you’ll need to connect to […]

Categories
EUTRAN LTE Mobile Networks RF

DIY RAN Adventures – Antennas

Picking and validating antenna selection for the new RAN project in my lab.

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EUTRAN LTE Mobile Networks

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.

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EPC EUTRAN LTE Mobile Networks

S1AP – Relative Capacity (87) on MME

Functionality of eNB MME selection based on Relative Capacity IE

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EUTRAN LTE Mobile Networks

Viewing the SIB – The LTE System Information Block with SDRs

Using SDR hardware to view the LTE System Information Block’s contents.

Categories
EUTRAN LTE Mobile Networks RFCs & Standards Software

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.

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EPC EUTRAN LTE Mobile Networks SDM SIM Cards

BaiCells USIM PLMN Issues (MNC 314 / MCC 030 vs MNC 311 / MCC 98)

Why the BaiCells PLMN changes?

Categories
EPC EUTRAN LTE Mobile Networks RFCs & Standards

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