Chapter 3 - Wireless Network Architecture and Design

Abstract

This chapter discusses the topology of wireless networks, and the logic behind the design. It provides an overview of the differences and purposes of the emerging technologies in the wireless sector. The three primary areas of discussion are fixed wireless, mobile wireless, and optical wireless technology. This chapter begins with a discussion of the fixed wireless technologies, which include multichannel multipoint distribution service (MMDS), local multipoint distribution service (LMDS), wireless local loop (WLL) technologies, and the Point-to-Point Microwave technology. The primary definition of a fixed wireless technology is that the transmitter and receiver are both in a fixed location. Service providers consider MMDS a complimentary technology to their existing digital subscriber line (DSL) and cable modem offerings; LMDS is similar, but provides high-speed bandwidth. The second category of wireless technology is mobile wireless, which is covered in this chapter with its evolution from the analog voice (1G) to the digital voice (2G) phases. The chapter also discusses an optical wireless system, which is defined as any system that uses modulated light to transmit information in open space or air using a high-powered beam in the optical spectrum.