This book explains
how to program Bluetooth applications with the Java programming
language.
2 Chapter One: Introduction
1.2 What Is Bluetooth Wireless Technology?
Bluetooth wireless technology is an open specification for a low-cost, lowpower,
short-range radio technology for ad hoc wireless communication of
voice and data anywhere in the world. Let us examine each of these
attributes.
??? An open specification means that the specification is publicly available
and royalty free.
??? Short-range radio technology means devices can communicate over
the air using radio waves at a distance of 10 meters (m). With higher
transmission power the range increases to approximately 100 m.
??? Because communication is within a short range, the radios are low
power and are suited for portable, battery-operated devices.
??? Bluetooth wireless technology supports both voice and data, allowing
devices to communicate either type of content.
??? Bluetooth wireless technology works anywhere in the world
because it operates at 2.4 GHz in the globally available, licensefree,
industrial, scientific, and medical (ISM) band.
Table 1.1 Comparison of Wireless Communication Technologies
Feature and
function
IrDA Wireless LAN Bluetooth
communication
Connection type Infrared, narrow beam, line
of sight
Spread spectrum, spherical Spread spectrum,
spherical
Spectrum Optical 850??“900 nm RF 2.
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