Mobile Communication & Wireless Networks

Mobile Communication & Wireless Networks

OBJECTIVES

• Evaluate, specify, plan and utilize wireless services for voice, data and images
• Exploit the capabilities of the digital cellular networks, including PCS and PCN
• Make use of the rapidly expanding selection of mobile services
• Select among competing wireless technologies and standards
• Identify the specific wireless products, networks, services and service providers
• Needed to implement your application
• Performing a fixed-link power budget to access link reliability
• Comparing wired vs. wireless PABXs and LANs
• Deciding whether and when to use wireless technologies
• Establishing remote office connections with VSATs

 COURSE OUTLINE

INTRODUCTION AND OVERVIEW

• Overview of wireless communications
• Evolution of wireless technology
• Advantages and limitations of wireless solutions

Key decisions to be made

• Evaluating wireless system hardware
• Services best provided by wireless means
• Vendors and providers of wireless products and services

The technical basics of wireless system

• Analog vs. digital wireless propagation and spectrum considerations
• Sharing resources via multiplexing and multiple access technique

Overview of wireless services

• Fixed
• Mobile
• Portable

EXTENDING NETWORK CAPABILITIES WITH FIXED WIRELESS SERVICES

Applications appropriate for fixed wireless solutions

• Wireless LANs and WANs
• Interconnecting LANs with building
• Building – to – building communication where wiring isn’t possible

Evaluating alternative technologies

• Using unlicensed applications
• Infrared connections
• Microwave links
• Providing remote telephone service with wireless local loops

ACHIEVING FLEXIBILITY WITH WIRELESS LANs

Wireless LAN Technology

• How conventional LANs operate
• Wireless LAN connection types
• Operational challenges of wireless LANs
• Regulations and standards

Wireless LAN decision factors

• Choosing the wireless LAN connection: radio frequency (RF) vs. Infra red (IR)
• Limitations due to signal loss and other factors
• Comparing wireless to conventional LANs: advantages, disadvantages, costs

PRIVATE WIRELESS SERVICES

Switching to wireless PABXs

• The pros and cons of operating your own wireless PABX
• Wireless PABX technology based on CT2, DECT, etc.

Private Mobile Radio

• Specialized Mobile Radio (SMR) and extended SMR (ESMR)
• Capitalizing on existing infrastructure for high-speed data transmission
• Transmission capacity considerations for voice and data

CELLULAR TECHNOLOGY – THE BASIS OF WIRELESS WANS

How analog cellular system work

• The building blocks of a cellular system
• Frequency allocations and reuse
• Call setup, hand-off / hand-over
• Cellular planning and capacity
• Advanced Mobile Phone Service (AMPS) / Narrow Band AMPS (N-AMPS) 

How digital cellular works

• Time Division Multiple Access (TDMA/Enhanced TDMA (ETDMA)
• Global System for Mobile Communications ( GSM ) PCS1900
• Digital AMPS (DAMPS)
• Code Division Multiple Access (CDMA)
• Transmitting data via cellular/PCS: Wireless Application Protocol (WAP)

Wide Area Mobile Data Service

• Emerging technologies: GPRS, HSCSD, EDGE and WCDMA
• Migrating to high-speed access

MOBILE DATA SERVICES FOR SPECIALISED APPLICATIONS

• The technologies that support mobile data services
• Short messaging, mobile modems
• Public data networks
• Paging Services
• Low cost wireless access: Bluetooth

Instrumentation and Control Services

• Telemetry
• Industrial/Scientific/ medical (ISM) application

GLOBAL SERVICES

• Satellite-based mobile services
• Creating a proprietary WAN with VSAT technology
• Effective use of airborne communication services
• Tracking vehicles with the Global Positioning System (GPS)

PERSONAL COMMUNICATIONS TECHNOLOGIES

• Affordable limited-range cellular
• Implementing Personal Communications Networks (PCN) in Europe and Systems (PCS) in North America
• Systems for global voice and data coverage: Low Earth Orbit Satellites (LEOS), UPT, UMTS