ABSTRACT
The last ten years have witnessed explosive growth in the number of subscribers for mobile telephony. The technology has evolved from early voice only services to text messaging through to today’s mobile wireless (Internet) data delivery. The increasing use of wireless connectivity via smartphones and laptops, predominantly for high bandwidth video streaming, has led to an exponential surge in network traffic. Meeting these mobile traffic demands is
Fundamentals,
causing a significant increase in operator energy cost, as an enlarged network of radio base stations is needed to support mobile broadband effectively and maintain operational competitiveness. This chapter thus explores approaches which will assist in delivering significant energy efficiency gains in future wireless networks. It will investigate several approaches to saving energy in future wireless networks. These include: femtocell and relay deployments; optimizing multiple antenna systems; sleep mode techniques to disable radio transmissions whenever possible; reallocating transmissions under low load; and improving the power amplifier. The impact of these approaches on achieving more energy efficient cellular wireless communication systems is discussed.
