Author

shubham kumar

@skgautam226016

articles: 43
total claps: 291
top claps: 64
avg read: 4.5 min
active: 2021-08-25 → 2026-06-27

Wiki topics

🔒 · Cybersecurity · 7 🔓 · Open Source · 3 BIZ · Business Strategy · 3 AI · AI · General · 3 🎮 · Gaming · 3 ECO · Economy · General · 3 EDU · Education & Learning · 2 🔧 · Data Engineering · 2

Top tags

#5g ·12 #ran ·10 #5g-core ·6 #nr-protocol-stack ·6 #gnb ·6 #oai ·6 #nr ·5 #network-function ·5 #open5gs ·3 #free5gc ·3

TCH HUM

SH Shubham Kumar

Learning CKS the Right Way

Recently I got some time after work, and a few people asked me how I approached my CKS preparation and what actually helped during the…

Mar 02, 2026 · 4 min read · 64 claps #kubernetes #kc #kubestronaut

MDA HUM ECO

SH Shubham Kumar · Write A Catalyst

How I Made $145,000 as a YouTuber — My 8 Top Sources of Income

All the income streams enabled me to make $145,000 per year on YouTube.

Jun 27, 2026 · 4 min read · 51 claps #youtube #side-hustle #passive-income

How I Made $145,000 as a YouTuber — My 8 Top Sources of Income

SH Shubham Kumar

RACH Procedure

When we want to connect a UE to the 5G network, it has to synchronize in downlink as well as in uplink…

Jun 08, 2025 · 3 min read · 51 claps #5g #ran #rach

SH Shubham Kumar

Can 5G SUPI Concealment really ensure Forward Secrecy?

From the past few months, I have been researching how to make 5G SUPI Concealment more forward secure? But based on the papers I had…

Jun 11, 2025 · 6 min read · 41 claps #5g #supi #suci

MDA

SH Shubham Kumar

NR Frame Structure

Data (UL/DL) is transmitted in the form of radio frames in the air. Radio Frames are of a duration of 10ms which consists of 10 subframes…

May 16, 2025 · 6 min read · 24 claps #next-generation #5g-network #frame-structure

SH Shubham Kumar

Understanding IPsec: How Internet Security Works

IPsec (Internet Protocol Security) is a comprehensive protocol suite designed to secure Internet Protocol communications at the network...

Jul 01, 2025 · 14 min read · 20 claps #ipsec #ipsec-tunnel #nat-traversal

Understanding IPsec: How Internet Security Works

SH Shubham Kumar

OAI 5G AUSF

AUSF is a Control Plane (CP) function, and as its name sounds, it manages the authentication-related procedures in the 5GS (5G System)…

Jun 05, 2025 · 3 min read · 10 claps #oai #5g-core #ausf

ECO

SH Shubham Kumar

OAI 5G UDM & UDR

UDM (Unified Data Management) is a front-end part of the UDR which makes subscription-related data available to the different network…

Jun 05, 2025 · 3 min read · 9 claps #oai #5g-core #udm

TCH

SH Shubham Kumar

OAI, Free5GC, Open5GS & Magma 5G Core Standards Comparison For AMF

This is a comparison of the 3GPP standards followed by open-source 5G core solutions such as OAI, Free5GC, Open5GS, and Magma for the 5G…

Jun 08, 2025 · 0 min read · 7 claps #oai #free5gc #open5gs

AI TCH

SH Shubham Kumar

Databricks Certified Generative AI Engineer — Notes

I prepared these notes while preparing for the Databricks Certified Generative AI Engineer exam. Most of the content is based on the…

May 20, 2026 · 12 min read · 5 claps #databricks-genai #certification #notes

TCH

SH Shubham Kumar · Code Rider

Make A Python Game : Rock, Paper, Scissors!

Game programming is the best way to learn many tools that are use in real world. This is the basic idea to start your coding journey and…

Aug 25, 2021 · 2 min read · 4 claps #python #python3 #rock-paper-scissor-game

Make A Python Game : Rock, Paper, Scissors!

SH Shubham Kumar

NR Protocol Stack: SDAP

To support the different kinds of traffic such as steady traffic in voice calls, burst traffic in broadband, a large no of devices in…

May 30, 2025 · 5 min read · 3 claps #nr-protocol-stack #5g #ran

ECO TCH

SH Shubham Kumar

Constant Time Implementation for Cryptography

Despite the name, “constant-time” doesn’t require identical execution times — it requires that timing variations cannot be correlated with…

Nov 04, 2025 · 11 min read · 1 claps #time-constant #liboqs #cryptography

Constant Time Implementation for Cryptography

SH Shubham Kumar

RAN Protocol Stack

Each layer provides the services to the layers above and consumes the services of the layers below.

May 29, 2025 · 3 min read · 1 claps #5g #ran #protocol-stack

ART MDA

SH Shubham Kumar

O-RAN Software Community (OSC) SMO/OAM

The O-RAN architecture decomposes the RAN into three distinct functional entities: the Open Central Unit (O-CU), the Open Distributed Unit…

Jan 27, 2026 · 13 min read · 0 claps #oran #smo #oam

MDA

SH Shubham Kumar

5G NR Call Flow

This is an overview of the 5G NR (New Radio) call flow, detailing the sequence of procedures involved in establishing, maintaining, and …

Jun 09, 2025 · 12 min read · 0 claps #5g #call-flow #5g-core

SH Shubham Kumar

MAC Scheduling

The resources are dynamically allocated to the different users in a more efficient manner. This type of transmission takes place through…

Jun 03, 2025 · 8 min read · 0 claps #5g #ran #nr-protocol-stack

SH Shubham Kumar

NR Protocol Stack: PHY

The MAC layer is responsible for the construction of the transport block, and this includes both the data and control elements.

Jun 03, 2025 · 6 min read · 0 claps #5g #ran #nr-protocol-stack

ECO

SH Shubham Kumar

OAI 5G AMF

AMF (Access and Mobility Management Function) is a Control Plane (CU) function in the 5G Core Network (CN). gNodeB first needs to connect…

Jun 05, 2025 · 6 min read · 0 claps #oai #5g-core #mfa

AI TCH LIF

SH Shubham Kumar

I Automated 80% of My Work With AI. The Most Valuable Lesson Had Nothing to Do With Technology.

Why AI Automation Is Quietly Creating a New Class of High-Leverage Professionals

Jun 06, 2026 · 6 min read · 0 claps #ai-automation #workflow-automation #business-automation

I Automated 80% of My Work With AI. The Most Valuable Lesson Had Nothing to Do With Technology.

SH Shubham Kumar

OAI 5G SMF

SMF is a Control Plane (CP) function that manages the session-related context with the UPF. It creates, updates, and removes sessions…

Jun 05, 2025 · 6 min read · 0 claps #oai #5g-core #smf

ECO

SH Shubham Kumar

Why Some AI Entrepreneurs Will Get Rich While Others Fight Over Scraps

Why the Next Wave of Million-Dollar AI Businesses Won’t Be Built the Way Most Entrepreneurs Think

Jun 20, 2026 · 6 min read · 0 claps #ai-business-ideas #ai-entrepreneurship #ai-startups

Why Some AI Entrepreneurs Will Get Rich While Others Fight Over Scraps

MDA AI ECO

SH Shubham Kumar

The Next $10,000/Month AI Side Hustle Probably Isn’t an AI Business

Why the Biggest AI Opportunity in 2026 Isn’t Another ChatGPT Trick

Jun 19, 2026 · 6 min read · 0 claps #ai-side-hustle #ai-entrepreneurship #ai-income-stream

The Next $10,000/Month AI Side Hustle Probably Isn’t an AI Business

ECO TCH

SH Shubham Kumar

How LibOQS Uses Valgrind to Hunt for Constant-Time Leaks?

In cryptography, ensuring constant-time execution is a critical defense against timing side-channel attacks. An implementation is…

Nov 06, 2025 · 6 min read · 0 claps #liboqs #time-constant #valgrind

How LibOQS Uses Valgrind to Hunt for Constant-Time Leaks?

SH Shubham Kumar

NR Protocol Stack: RLC

Different services have different requirements. For example, during transfer of large files, error free delivery of data is important…

Jun 03, 2025 · 6 min read · 0 claps #5g #ran #nr-protocol-stack