During the past two decades, the advancement in microelectronics and VLSI technology dipped down the cost of many consumer electronic products to a level, which was affordable for the common man. The sale of cellular phones is predicted to reach 1 billion in 2005. With increase in the number of electronic devices, comes in the need of connecting them together for maximum interoperability and utilization. Bluetooth is a technology devised to replace the cables.
Bluetooth can imitate a universal bridge to attach the existing data networks, and also as a mechanism for forming ad-hoc networks. Designed to operate in noisy frequency environments, the Bluetooth radio uses a fast acknowledgement and frequency hopping scheme to make the link robust. At the nominal operating range of 10 meters, Bluetooth creates a 10-meter radius bubble around the mobile phone that instantly connects the Bluetooth Personal Area Network (PAN) to an existing Wide Area Network (WAN) such as TDMA, CDMA, GPRS or GSM. Within the PAN sphere, Bluetooth provides a common wireless transport method for all communication traffic data or voice.
A wireless headset handles incoming and outgoing voice calls while a PDA, digital camera, MP3 player and a mobile computer exchange emails, pictures, or music over the web. Bluetooth turns the mobile phone into a communication gateway where information flows freely without boundaries. Outside of the PAN, Bluetooth can be utilized as an Instant Access Point facilitating the means for electronic commerce, personal finance, or data collection.
The objective of this paper is to provide an informative overview about Bluetooth technology, which has in fact already become a global de facto standard for wireless connectivity. In this report we are including the fundamentals of Bluetooth, how it evolved, the architecture, the working, and the technical specifications. Moreover, we are also penning down a few of its advantages and disadvantages from a consumer and provider point of view which further leads on to describing a few of its vast and varied applications. We conclude on the note of what Bluetooth technology presently is and what potential it has in our world and life.
Bluetooth is a global standard for wireless connectivity. Bluetooth technology facilitates the replacement of the cables used to connect one device to another, with one universal short-range radio link operating in the unlicensed 2.45 GHz ISM band. Bluetooth can imitate a universal bridge to attach the existing data networks, and also as a mechanism for forming ad-hoc networks. Designed to operate in noisy frequency environments, the Bluetooth radio uses a fast acknowledgement and frequency hopping scheme to make the link robust. The main objectives of Bluetooth technology are:
- Cable replacement
- Small size
- Low cost
- Low power