How to find a subscriber location within the network.
Category: Mobile Networks
Thanks to some recent developments, PyHSS has had a major overhaul recently, and is getting better than ever, Some features that are almost ready for public release are: Config File Instead of having everything defined all over the place a single YAML config file is used to define how the HSS should function. SCTP Support […]
A look at MTU and its role in LTE and 5G Transmission.
Using Wireshark to sniff communication between your computer and Smart Card / SIM Card
Sending commands/APDUs to a real life Smart Card.
Australia is a strange country; As a kid I was scared of dogs, and in response, our family got a dog. This year started off with adventures working with ASN.1 encoded data, and after a week of banging my head against the table, I was scared of ASN.1 encoding. But now I love dogs, and […]
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SCTP Multihoming
A look at SCTP multi-homing in practice.
How SR-IOV and DPDK play into faster performance of Virtual Network Functions (VNFs) for 3GPP core networks.
A look at the Confidentiality Algorithms used in 3GPP Networks, MILENAGE, XOR & Comp128
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 […]
A look at APDUs and Interacting with Cards
The basics of Smart Cards & their File System
Getting up close and personal with Smart Card / SIM Cards
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Cell Broadcast in LTE
A look at how Cell Broadcast is signalling implemented between the MME and CBC in an LTE/EPC network.
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 […]
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Huawei BTS3900 – MML Basics
Learning Huawei’s flavour of MML – Man Machine Language for the BTS 3900 series Macro Base Stations.
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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 […]
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SIMtrace Cases
I put together some laser cut case designs for the Osmocom SIMtrace, Quite happy with the results. If you want to cut your own, I’ve sent the DXF files to the mailing list, and will try and add to the project.
All the gear I’ve got so far for my DIY RAN Project requires -48vDC to power it up. Back to online auction websites and preso I’ve ended up with an Eltek MPSU3000, from the mid 2000s. The fellow I bought it from was even nice enough to throw a binder full of printed documentation, which […]
Acronyms and cryptography – a look at Subscriber Identifiers in 5G