2G-4G Signaling Mastery for Interviews: CS, PS, LTE & VoLTE

Name: 2G-4G Signaling Mastery for Interviews: CS, PS, LTE & VoLTE
Rating: 4.3 (14 reviews)

Unlock telecom careers: Dive into signaling procedures & call flows across mobile generations, from GSM to VoLTE

Created byCore & IMS Learning

Last updated 2/2024

English

What you'll learn

Understand signaling in 2G to 4G networks, focusing on CS, PS, LTE, and VoLTE technologies.
Master the IMSI attach/detach and authentication processes across mobile generations.
Navigate complex call flows for mobile-originated and terminated calls efficiently.
Implement secure ciphering and encryption techniques in mobile communications.
Execute PDP context activation, modification, and deactivation in PS networks.
Perform EPC attach, bearer establishment, and tracking area updates in LTE.
Facilitate smooth VoLTE calls and manage IMS registration and third-party integrations.
Diagnose and resolve common signaling issues in 2G, 3G, and 4G networks.

Course content

4 sections • 44 lectures • 8h 29m total length

Basic Procedures in CS (Circuit Switched) Core Network4:25
Mastering Mobile Connectivity: IMSI Attach Essentials5:41
Securing the Network: Authentication Deep Dive26:52
Ensuring Privacy: The Ciphering Process Unveiled6:15
Optimizing Network Resources: The Purge MS Protocol2:09
Navigating Network Mobility: Advanced Location Update Strategies9:46
IMSI Attach explained1:10
Seamless Network Departures: IMSI Detach Explained1:18
Keeping Connected: The Art of Periodic Location Updates2:06
Dual-Mode Mastery: Combined Attach Procedures1:49
The combined attach procedure authenticates the subscriber on the MSC, updates location on CS and PS via the SGSN, and retrieves the profile from the HLR for future UE transactions.
Location Precision: Independent Update Techniques1:29
Data Synchronization: Recovery Location Update Insights1:50
Global Roaming Unlocked: Location Update Mechanisms2:49
Voice in the Digital Age: MO/MT Call Signaling1:04:41
Texting Redefined: SMS Call Flow Dynamics15:59
LTE to Legacy: CSFB Call Flow for Seamless Transition42:00
Learn css fallback and csfb call flow that lets a 4g subscriber drop to 2g/3g for voice, coordinated by mme, msc, and epc, and ims integration enables voice on 4g.

Gateway to the Internet: PS Core Attach Procedures16:01
Network Handovers: Managing SGSN Changes4:48
Explore how a new SGSN handles handover by obtaining IMS and authentication parameters from the old SGSN to perform local authentication and complete the attach sequence with HLR updates.
Unified Connectivity: CS & PS Core Combined Attach16:35
User-Initiated Network Exit: Detach Procedures Demystified13:19
Administrative Sign-offs: Understanding HLR-Initiated Detach1:15
Understand how an HLR-initiated detach updates the subscriber profile on the SGSN, issues cancel location to the old SGSN, and handles reattach after routing area update.
Data Housekeeping: The Purge Procedure in PS Core4:46
Activating Data Sessions: PDP Context Essentials22:50
Tailoring Data Services: PDP Context Modification3:07
Maintaining Active Sessions: PDP Context Management7:21
Concluding Data Sessions: PDP Context Deactivation2:44
Conclude a PDP context by the SGSN deleting the PDP context after detachment, coordinating with the GGSN and PCF via credit control to terminate the session and release radio bearers.
Optimizing Data Routing: RA Update Signaling8:51
Requesting Network Services: PS Core Service Signaling3:35
Reaching the Unreachable: Paging Procedures in PS Core5:20

The Gateway to 4G: EPC Attach Procedures Uncovered8:32
Fortifying the Network: Authentication in EPC Explained19:03
Discover how authentication, integrity, and encryption fortify the EPC, using master keys to derive cipher and integrity keys and generate NAS, RRC, and eNodeB security keys for secure air-interface communications.
Navigating the 4G Landscape: Tracking Area Update Mastery9:08
Master signaling to establish an end-to-end eps bearer from tracking area update through S1 and S5 bearers, exchanging tunnel endpoints between eNodeB, S gateway, and P gateway.
Enabling High-Speed Data: Bearer Establishment in EPC5:48
Explore how high-speed data bearer establishment follows authentication and identity checks, including IMEI/ME validation, EIR whitelisting, and updating location with the HSS to manage and delete old EPS bearers.
Graceful Network Exits: Detach Signaling in EPC Demystified7:19
Explore how a detach request triggers EPC-wide cleanup, deleting sessions and bearers, as UE powers down and signaling traverses through MME, HSS, and gateways to PCF.

Foundation of VoLTE: IMS Registration Procedures Unveiled32:00
Learn how IMS registration unfolds from SIP register messages through proxy and interrogating CSCFs to the HSS, including IMPI, IMPU, UE IP address, and the 401/200 authentication flow.
Beyond Basic Connectivity: IMS 3rd Party Registration Insights11:08
Real-Time Notifications: Mastering IMS Subscription Events7:02
VoLTE Calls Demystified: MO Call Flow Explained23:35
Call Flow Signaling messages with IMS Nodes23:29
Optimizing VoLTE Quality: PCRF Interaction in Call Flow23:04
Enhancing VoLTE Services: IMS Dedicated Bearer Establishment13:27
Enhance VoLTE services by detailing the dedicated bearer establishment, linking the p-gw and s-gw through s5 and s1 tunnels, and configuring qci, bearer ID, and rrc reconfiguration.
SRVCC Flow in a high level view8:37
Track the high level srvcc flow for a VoLTE call as a user moves from 4g to 3g, with msc and mme signaling and resource reservation across epc and cse.
SRVCC Flow Preparation phase13:26
SRVCC Flow Execution phase3:02
During the srvcc execution phase, 3g handover completes from ue to msc via node b, with ps to cs complete and bearer deactivations, followed by 3g voice and data sessions.

Requirements

Basic Understanding of Telecommunications
Technical Background

Description

Embark on a transformative journey through the intricate world of telecommunications signaling with our meticulously crafted course, "2G-4G Signaling Mastery for Interviews: CS, PS, LTE & VoLTE." Designed to bridge the gap between theoretical knowledge and real-world application, this course offers a deep dive into the signaling procedures and call flows that are the backbone of mobile communications.

Why This Course?

In an era where mobile technology evolves at lightning speed, understanding the foundations of mobile network signaling from 2G to 4G is crucial for professionals aspiring to excel in the telecommunications industry. Whether you're preparing for a pivotal job interview, seeking to upgrade your skills, or aiming to grasp the complexities of CS (Circuit Switched), PS (Packet Switched) networks, LTE, and VoLTE technologies, this course is your gateway to success.

What You Will Learn:

Fundamentals of Signaling: Explore the essential concepts of signaling in mobile networks, including the role of IMSI, authentication, ciphering, and location update procedures.
2G and 3G Networks: Gain insights into GSM and UMTS architectures, focusing on their respective CS and PS core networks' signaling and call flow mechanisms.
LTE Evolution: Unravel the complexities of 4G LTE networks, understanding the EPC (Evolved Packet Core) and the pivotal role of signaling in high-speed data and voice services.
VoLTE and IMS: Delve into the world of Voice over LTE, exploring IMS registration, call flows, and the seamless integration of voice services over LTE networks.
Real-World Applications: Learn through practical examples, detailed diagrams, and flowcharts that illustrate the signaling paths and procedures, preparing you for real-world challenges.
Interview Readiness: Equip yourself with the knowledge and confidence to tackle technical interviews, with insights into the most commonly asked questions and scenarios in the telecom sector.

Who Should Enroll?

This course is ideal for telecommunications engineers, network professionals, students, and anyone keen on mastering the signaling aspects of mobile communications. Whether you're aiming to kickstart your career, transition into the telecom sector, or enhance your technical expertise, this course provides the knowledge and tools to achieve your goals.

Unlock Your Potential:

Join us on this journey to demystify the complex world of mobile network signaling. Equip yourself with the skills to not just understand but also to innovate and excel in the fast-paced telecom industry. Enroll now and take the first step towards securing your place in the future of telecommunications.

Who this course is for:

Telecommunications Professionals
Engineers looking to expand their knowledge on the signaling aspects of 2G, 3G, and 4G technologies
Students pursuing degrees in telecommunications, computer science, electrical engineering, or related fields.

2G-4G Signaling Mastery for Interviews: CS, PS, LTE & VoLTE

What you'll learn

Explore related topics

Course content

Basic Procedures in CS (Circuit Switched) Core Network16 lectures • 3hr 10min

Call Flow Procedures in PS (Packet Switched) Core13 lectures • 1hr 51min

Evolved Packet Core (EPC) Call Flow Procedures5 lectures • 50min

IMS VoLTE: Advanced Communication Procedures10 lectures • 2hr 39min

Requirements

Description

Who this course is for: