Mobile Computing (Lecture 3)

A cellular system that divides any given area into cells where a mobile unit in each cell communicates with a base station. The main aim in the cellular system design is to be able to increase the capacity of the channel.

• Wireless Network
• Global System for Mobile (GSM)
• Mobile Station (MS)
• Internation Mobile Station Equipment Identity (IMEI)

a second generation cellular standard developed to cater voice services and data delivery using digital modulation

• Wireless Network
• Global System for Mobile (GSM)
• Subscriber Identity Module (SIM)
• Internation Mobile Station Equipment Identity (IMEI)

contains IMSI; allows user to send and receive calls; encoded network identification details; protected by a password or PIN; can be moved from phone to phone

• Wireless Network
• Subscriber Identity Module (SIM)
• Mobile Station (MS)
• Internation Mobile Station Equipment Identity (IMEI)

serial number which distinctively identifies a mobile station internationally

• Wireless Network
• Global System for Mobile (GSM)
• Mobile Station (MS)
• Internation Mobile Station Equipment Identity (IMEI)

IMEI: 6 decimal places, centrally assigned

• type approval code (TAC)
• final assembly code (FAC)
• serial number (SNR)
• spare (S)

IMEI: 2 decimal places, assigned by the manufacturer

• type approval code (TAC)
• final assembly code (FAC)
• serial number (SNR)
• spare (S)

IMEI: 6 decimal places, assigned by the manufacturer for identification of all equipment

• type approval code (TAC)
• final assembly code (FAC)
• serial number (SNR)
• spare (S)

IMEI: 1 decimal place

• type approval code (TAC)
• final assembly code (FAC)
• serial number (SNR)
• spare (S)

every registered user has an ___ with a valid IMEI stored in their Subscriber Identity Module (SIM)

• Internation Mobile Subscriber Identity (IMSI)
• Temporary Mobile Subscriber (TMSI)
• Mobile Subscriber ISDN Number (MSISDN)
• Base Subsystem (BSS)

can be assigned by the VLR, which is responsible for the current location of a subscriber; stored on the network side only in the VLR and is not passed to the Home Location Register (HLR).

• Internation Mobile Subscriber Identity (IMSI)
• Temporary Mobile Subscriber (TMSI)
• Mobile Subscriber ISDN Number (MSISDN)
• Base Subsystem (BSS)