Telecom Basics

Introduction To Telecom Systems

• PSTN . PLMN . PDN . ISDN

GSM Basics

• FDMA . TDMA . FDD
• Network Elements
  • MS . BTS . BSC
  • MSC . VLR . GMSC
  • HLR . AUC . EIR
  • TRAU . MG
• Radio Architecture & Channels
• Flows:
  • Attach . LAU . CS . SMS . USSD

GPRS Basics

• Network Elements
  • PCU . SGSN . GGSN
• Flows:
  • PDP Session Activation

UTRAN Basics

• Network Elements & Systems
  • UE . NODEB . RNC
  • CN-CS
  • CN-PS
  • CN-BC
• Flows:
  • PDP Session Activation

Hands-On

• Packet Data Tunneling Practices
• GRE and GTPU Tunneling
  • GNS3: https://www.gns3.com
  • Wireshark: https://www.wireshark.org/

Evolution of LTE Architecture from UTRAN

LTE Network Sub-Systems

• E-UTRAN . EPC

LTE Network Elements

• UE . eNB
• MME
• HSS . EIR . PCRF
• SGW . PGW
• CGF . OCS

LTE Protocols

• Radio
  • NAS . RRC
  • PDCP . RLC . MAC
  • OFDMA . SC-FDMA
• Core
  • X2AP . S1AP
  • GTPU . GTPC
  • DIAMETER
  • MIPv4 . PMIPv6 . GRE
• All-IP Transport
  • UDP-IP . SCTP-IP

LTE Call Procedures

• Attach . Combined Attach
• TAU . Combined TAU
• Detach
• Paging . Service Request . Extended Service Request
• Intra 3GPP Handovers:
  • X2 HO . S1 HO
  • Inter-System HO
• Inter-3GPP Handovers:
  • CDMA . Wi-Fi . WiMAX

LTE-Advanced

• MIMO . Massive MIMO
• Carrier Aggregation
• Femto Cells & Home eNB
• CSFB . SRVCC
• SON
• eMBMS

Voice Over IP & Protocols

• Introduction to VOIP
• SIP . SDP
• RTP . RTCP
• MGCP

IP Multimedia Sub-System (IMS) Network Elements

• P-CSCF . I-CSCF . S-CSCF
• HSS . SLF
• BGCF . MGCF . MGW
• MRB . MRFC . MRFP
• TGW . IBCF

IMS Call Flows

• Origination
  • MO Home . MO Roaming
  • PSTN Orig.
  • Non-IMS Network Orig.
  • AS Orig.
• Transition
  • SO & ST by Same. OP.
  • SO & ST by Diff. OP.
  • SO with PSTN in Same. Net.
  • SO with PSTN in Diff. Net.
• Termination
  • MT Home
  • MT Roaming
  • MT CS Domain Roaming
  • PSTN Termination
  • Non-IMS Network Termination
  • PSI Based AS termination
  • PUI Based AS termination

Protocol Module Development with either C/C++/Python

• Configuration Module Development
  • File, GUI, CLI Design
  • Data Base Design
  • API Design
• State Machine Module Development
  • Data Base Design
  • API Design
• Logic Module Development
  • Use Case Design
  • Triggering Criteria design for Tx and Rx Operations
  • API Design
• CODEC Module Development
  • ASN.1(BER&PER)
  • TLV
  • Text Based
  • API Design
• Transport Control Module Development
  • Socket Communications design
  • API Design

Protocol Design Principles

Protocol Module Design

Debugging Methods

Unit Testing & Module Testing Design & Execution

Any one of LTE Protocols Development Project execution

Understanding SDLC

Agilc Scrum Methodology in Modern Telecom Project Environments

Implementation

• Functional Requirements gathering from 3GPP
• Non-Functional Requirements
• Implementation specification
• Design Specification development
• Implementation and Integration strategies

Continuous Automation Mechanisms

Test & Bug Management Tool

• Quality Center(QC): https://en.wikipedia.org/wiki/HP_Quality_Ce nter

Code Management Tool

• SubVersioN(SVN): https://subversion.apache.org/

Intro to Data Communications, Layers, Protocols

Physical

• SONET/SDH . PDH

Data Link

• Services
• Hubs . Bridges . Switches
• Protocols:
  • Ethernet . ARP . RARP

Network

• Sub Netting
• Routing
• Forwarding
• Protocols
  • IPv4 . IPv6
  • ICMPv4 . ICMPv6

Transport

• Services
• Protocols
  • TCP . UDP . SCTP

Session, Presentation, Application

• Services
• Protocols
  • SSLv3
  • DNS . DHCP . SSH . Telnet
  • FTP . FTPS . SFTP . TFTP . HTTP . HTTPS

Hands-On Tools

• Networking Simulation Tool:
  • GNS3: http://www.gns3.net/
• Protocol Log Analyzer
  • Wireshark: https://www.wireshark.org/