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Papers > Technology > Bluetooth
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1. Bluetooth Overview
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Bluetooth |
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Introduction Bluetooth is a fairly new technology that eliminates the need for wires and allows different devices to interact. ... The Swedish company, Ericsson Mobile Communications, came up with the idea for Bluetooth. ... The Bluetooth standard, which works operates on short wave radio signals, offers a variety of possible configurations for data and voice transmission. ... PCs, PDAs, cell phones, homes, offices, and even automobiles are places soon to be revolutionized by Bluetooth. ... The culmination of this research resulted in what is now Bluetooth. ... Harald Blåtand, which is roughly translated as Harold Bluetooth, was King of Denmark from A. ... Since this new technology unifies many different devices into one wireless network, Bluetooth was a perfect name candidate. ... (Hall 1) Implementation The physical Bluetooth chip is nine millimeters by nine millimeters which makes it easy to place in electronics. ... The cost of Bluetooth implementation is projected to be relatively inexpensive. ... This trend is predicted for Bluetooth. ... Network configuration A Bluetooth network is called a piconet (see figure 1). ... Overcoming Interference Bluetooth devices transmit on the open frequency of 2. ... The creators of Bluetooth took this into account and devised a way to best prevent interference and increase security. Bluetooth radios use spread spectrum frequency hopping to transmit. ... 4GHz band, Bluetooth devices typically hop faster and use shorter packets” (Miller 6. ... States of Activity A Bluetooth device has six different states in which it can be in. ... (Monson 2) Transmission The Bluetooth standard is capable of transmitting both voice and data at a speed of about one megabyte per second. ... Bluetooth devices are capable of working in packet switching and circuit switching modes at the same time. ... Bluetooth uses frequency hopping when sending these information packets. ... Bluetooth sets up three channels using circuit switching. ... Error Correction Bluetooth has two types of error correction, forward error correction and automatic repeat request. ... FEC has its down points when used with Bluetooth. ... ARQ is not the preferred method of error correction for Bluetooth due to the mediocre transmission speeds. Security With the anticipation of the wide spread usage of Bluetooth, decent security methods were implemented. ... “The Bluetooth Specification addresses security issues by specifying 128-bit public/private key authentication” (Miller Chap 6). These security measures provide Bluetooth transmission with a fair amount of protection. ... Bluetooth Today Currently, Bluetooth is not very wide spread, but that will change as the technology gets more and more accepted. Devices manufactured with Bluetooth chips today are things like cell phones, PDAs, some laptops, headsets, and computer peripherals. ... The main reason for developing Bluetooth was to eliminate the need for wires connecting devices in a close proximity. ... Most computer peripherals, mice, keyboards, and printers are Bluetooth compatible. ... Cell phone users can now speak hands free and wire free when they have a Bluetooth enabled phone and matching headset. The mobile computing industry is now partially Bluetooth enabled. |
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Paper Information |
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Title: Bluetooth
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