ABSTRACT:
In recent years, the rapid expansion of wireless services is an indication that significant value is placed on portability and accessibility as key features of mobile communication. Mobile devices have maximum utility when they can be used anywhere and anytime. One of the major limitations of that goal is limited power supply. Since batteries provide limited power, a general constraint of mobile communication is the short continuous operation time of mobile devices. Therefore, power reduction and management is one of the most challenging problems in mobile systems. Energy conservation has been largely considered in the hardware design of the mobile terminal and in components such as CPU, disk, display, memory, etc. Significant additional power savings can be also achieved by incorporating low-power methods into the design of network protocols used for data (audio, video, etc.) communication. This chapter investigates in details power reduction techniques at the mobile host’s components level, such as CPU, disk drive, screen back light, etc., and at the network protocols level used for data communication
