GSM Introductory

Overview A comprehensive introduction to the Global System Mobiles (GSM) network and it's supporting protocols. Covering the terminology, technology and topology of the Core Signalling System and its application to the GSM network. Duration - 2 Days.

Who will benefit

Network/Systems Engineers/Operators/Planners.

Prerequisites

Introduction to Telecommunications and the Overview to SS7, with experience of Telecommunications technology.

By the end of the course delegates will be able to describe:

By the end of the course delegates will be able to describe: • The GSM network configuration • Identify the function of the GSM Network elements • The functions of the MTP layers • Signalling Connection Control Party protocol and procedures • The Transaction Capabilities Application Part protocol and procedures • The Mobile Application Part protocol and procedures • TRAU control and frames • The Base Station Application Part protocols and procedures • Layer 2 LAPD protocol and procedures • Call control, mobility management and radio resource management • Signalling scenarios in the GSM network

Course Content

The GSM network GSM network architecture. The Mobile Station (MS). The Subscriber Identity Module (SIM). The Base Transceiver Station (BTS) and configurations. The Base Station Controller (BSC). The Transcoding Rate and Adaptation Unit (TRAU). The Base Station Subsystem (BSS) and the transmitter/Receiver (TRX) module. The Mobile Services Switching Centre (MSC). The Home Location Register (HLR). The Visitor Location Register (VLR). The Equipment Identity Register (EIR). SS7 Protocol, MTP Layers Signalling Message Handling including Message Discrimination, Message Distribution, Message Routing. Signalling Network Management (SNM) including Link Management, Traffic Management, Route Management. Signalling link alignment including Link states and procedures. SNM message fields and formats. The A Interface The A interface protocols. Base Station Application Part (BSSAP). Direct Transfer Application Part (DTAP). Base Station Mobile Application Part (BSSMAP). TRAU control. TRAU frames. BSSAP message structure and discrimination. BSSMAP messages and functions. The A-bis Interface Traffic channel configurations. Link Access Protocol D (LAPD) layer 2. Service Access Point identity (SAPI). Terminal End-point Identifier (TEI) including TEI assignment procedures, Unnumbered frame types, Information frame types, Supervisory frame types. Radio Link Layer Management (RLM) messages and functions. Common Channel Management (CCM) messages and functions. Dedicated Channel Management (DCM) messages and functions. TRX Management (TRXM) messages and functions. The Air (Um) Interface Frequency Division Multiple Access (FDMA). Time Division Multiple Access (TDMA). Physical and logical channels. Mapping of logical to physical channels. LAPD over the Um Interface. Radio Resource (RR) management messages and functions. Mobility Management (MM) messages and functions. Call Control (CC) messages and functions. Supplementary Services (SS) messages and functions. GPRS Protocol stack Describe the components of the protocol stack. Examine how each component works. Understand how encapsulated packets are sent. Examine how each component links to the next component. GPRS Air interface Identify the new GPRS channels required. Explain how the new channels work. Understand how to map GPFS logical channels onto physical channels. Explain how they enable session activation. Describe the difference between master PDCH's and slave PDCH's. GPRS Terminal requirements Describe the 3 classes of terminal available. Explain how the handset performs a GPRS attach and detach. State the timescale of handset availability. GPRS Trial results State the current trial results available. Describe which network operators are already operating GPRS networks. Emerging Wireless data technologies and the implications for GPRS Explain how the following new data technologies fit in with GPRS, WAP, Bluetooth, Mobile IP, and E-GPRS.