Handover

The process of changing cells during a call is called handover in GSM terminology. To choose the best target cell, the MS and the RBS perf...

TRAFFIC CASES: MS IN ACTIVE MODE

An MS is in active mode when there is a call (speech, fax or data), or a call set up procedure taking place. Cases which activate an...

TRAFFIC CASES: MS IN IDLE MODE

Traffic cases when MS is in idle mode ATTACHING TO THE NETWORK IMSI attach When an MS is switched on, the IMSI attach procedure ...

MOBILE STATION CLASSES

Different types of MSs have different output power capabilities and therefore different ranges. Hand-held phones generally have a lower ou...

GSM TRANSMISSION PROCESS

STAGE 1: ANALOG TO DIGITAL (A/D) CONVERSION One of the primary functions of an MS is to convert the analog speech information into digi...