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Connecting Many with Bluetooth

March 30, 2011 By Leave a Comment
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Bluetooth connecting

Constantly evolving, the technology of Bluetooth connecting started off as a basic wireless connection standard but has since then been adapted and proven with many different uses and functions. A good example is Bluetooth for cell phones.  It enables mobile users to connect to their hands free headset without using wires.  Bluetooth connecting technology will also allow mobile phone users to connect with their hands free kit as well.

Another handy use of Bluetooth connecting is sharing file.  It allows the sharing of files between two cell phones, between a cell phone and computer, which makes the sharing of files a snap.  If you have a cell phone and computer, you can easily transfer data between the two.

Say for example you wanted to put an MP3 on your phone from your computer you could do it easily with Bluetooth connecting.  All you would need is a Bluetooth adapter for your computer.  It doesn’t stop with the swapping of files either, as you can use your computer and phone to synchronize phone books, send SMS messages, and much more.

Although Bluetooth may be dandy for cell phones, it also comes in handy for the home office as well. Utilizing Bluetooth is a great way to set up a home office – two computers, a printer, and even a scanner.  They all can be connected using Bluetooth connecting technology with effective ranges of up to 10 meters.


The technology and devices of Bluetooth connecting will be around for years and years to come.  As years go by, Bluetooth will provide even better wireless solutions for different applications.  Even though Bluetooth has a short range, it has that short range for a reason.  Bluetooth is easily the best in wireless technology – which it continues to prove time and time again.

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Introduction to the Specification of Bluetooth

March 17, 2011 By Leave a Comment
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specification of Bluetooth

Bluetooth was designed to allow low bandwidth wireless connections to become easy to use so even those who are new to wireless can use them.  Version 1.1 of Bluetooth describes a low power, short range wireless networking technology that uses radio waves to send data at rates up to 720 kilobits a second.

The specification for Bluetooth provides for different classes of radio that allow transmission ranges of up to 100 meters by boosting the radio power.  The technology of Bluetooth isn’t limited to line of sight transmission since it uses directional waves that are capable of transmitting through many obstructions.

Bluetooth is an industry standard communication of wireless, meaning that it enables the connection of other devices as well, such as cell phones, computers, digital cameras, and other types of electronic devices.  The specification of Bluetooth defines a radio system and a “stack” of protocol layers and profiles.  The highest layer is the application layer, while the lowest layer is the radio. [Read more...]

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How Bluetooth devices Works

March 10, 2011 By Leave a Comment
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Bluetooth devices

Bluetooth devices will normally operate at 2.4 GHZ in the license free, globally available ISM radio band.  The advantage to this band includes worldwide availability and compatibility.  A disadvantage to this however, is that the Bluetooth devices must share this band with other RF emitters.  This includes automobile security systems, other wireless devices, and other noise sources, such as microwaves.

To overcome this challenge, Bluetooth employs a fast frequency hopping scheme and therefore uses shorter packets than other standards within the ISM band.  This scheme helps to make Bluetooth communication more robust and more secure.

Frequency hopping Frequency hopping is basically jumping from frequency to frequency within the ISM radio band.  [Read more...]

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Choosing a Bluetooth Headset

March 4, 2011 By Leave a Comment
bluetooth and headset

Bluetooth headset

Creating a good wireless Bluetooth headset is actually difficult to do.  The regular wired headsets are easy to design – with ranging styles.  Bluetooth headsets can never be as small or as light as wired headsets, simply because it needs to include the battery and extra functions. This extra size will impact how the Bluetooth headset mounts on or around your ears.

Comfort

There seems to be two main styles of Bluetooth headset.  Some are held into place with a loop around the ear.  These styles are normally more comfortable, although they may be less secure.  [Read more...]

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Bluetooth Wireless Networking

March 1, 2011 By Leave a Comment
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Bluetooth wireless networking

Bluetooth technology offers three different types of defined ranges, based on output ranges.  Class 1 devices are the most powerful, as they can have up to 100 mW of power, with a regular antenna giving them a range of around 130 – 330 feet.

The class 2 devices are lower power, offering up to 2.5 mW of power. A regular antenna will give them a range of around 50 – 100 feet.  Class 3 devices use even less power, up to 1 mW of power to be exact.  With a regular antenna, they will have a range of around 16 – 33 feet.

Even though you may not realize it, Bluetooth wireless networking technology has never been intended for anything other than short distance types of communication. With Bluetooth wireless networking, the short range is actually a benefit. [Read more...]

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Bluetooth Versions

February 22, 2011 By Leave a Comment
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Bluetooth Version

Bluetooth Version 1.1 and earlier since the technology of Bluetooth was introduced in 1998; several specification versions have been released.  Versions 1.0 and 1.0B had too many issues and problems for manufacturers to develop devices for Bluetooth.  The main issue was the lack of communication among the devices. The core specification version 1.1 is the first successful operating Bluetooth Versions. Version 1.1 corrected a majority of the bugs and problems found in earlier versions.

Bluetooth Version 1.2: Many of the newer Bluetooth devices, such as the newer cell phones are being sold with the newer Bluetooth version 1.2.  This version offers backward compatibility with Bluetooth 1.1, faster transmission speeds, received signal strength, and a host controller interface (HCI) support for 3 wires UART.


Bluetooth version 2.0. It’s true that there may be multiple communication technologies, although they all share one common trait – faster is better.  Bluetooth specialists realized this, and therefore worked on improving the speeds of version 1.2.  The newest version, version 2.0 + EDR (Enhanced Data Rate) was accounted in 2004 and became available in late 2005. [Read more...]

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Bluetooth Technologies Intro

February 15, 2011 By Leave a Comment
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Bluetooth Technologies

The technology of Bluetooth is nothing new, but in many respects it can still seem like more of a buzz word rather than an accepted technology.  You may see the ads for Bluetooth technologies enabled devices, although you still may be wondering what it is.

Capabilities of Bluetooth Technologies

The Bluetooth definition is a wireless technology that is a worldwide specification for a small form factor, low cost solution that will provide link between mobile devices and other electronic devices.

Similiar to 802.11 b/g wireless and many cordless telephone systems, Bluetooth technologies operates on 2.4 GHz radio signals.  The 2.4 GHz band seems to be a bit crowded, with interferences between the Bluetooth devices a bit hard to avoid.  Telephones are now being offered at the 5.8 GHz frequency band, which will help to remedy this.

The technical specifications of Bluetooth technologies will indicate a maximum transfer rate of 723 kbps with a range of 65 – 328 feet, all depending on the class of that particular device.  The speed is a fraction of what is offered by wireless standards, so it’s obvious that Bluetooth doesn’t really pose a threat to replacing your wireless network. [Read more...]

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Bluetooth Specifications Explained

February 6, 2011 By Leave a Comment
specifications of Bluetooth

Bluetooth specifications

Below, you’ll find several Bluetooth specifications for the well known Bluetooth:

  1. Throughout the United States and even Europe, the range of frequency is 2,400 – 2,483.5 MHZ, with 79 1-MHz RF (radio frequency) channels.  The frequency range in Japan is 2,472 to 2,497 MHz with 23 1-MHz RF channels.
  2. A data channel of Bluetooth randomly hops 1,600 times per second between the 79 RF channels.
  3. Each Bluetooth channel is divided into time slots, with each one being 625 microseconds long.
  4. A Bluetooth piconet has one master and up to seven slaves.  The master will transmit in even time slots, while the slaves will transmit in odd time slots.
  5. The data in a single packet can be up to 2,745 bits in length.
  6. Currently, there are two types of data transfer between devices – SCO (synchronous connection oriented) and ACL (asynchronous connectionless). [Read more...]
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Bluetooth Security

January 8, 2011 By Leave a Comment
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Bluetooth Security

These days, all communication technology faces the issue of privacy and identity theft, with Bluetooth being no exception.  Almost everyone knows that email services and networks require security.  What users of Bluetooth need to realize is that Bluetooth also requires security measures as well.

The good news for Bluetooth users is that the security scares, like most scares, are normally over dramatized and blown entirely out of proportion.  The truth being told, these issues are easy to manage, with various measures already in place to provide Bluetooth Security technology.

It’s true that there has been some Bluetooth phones that have been hacked into.  Most devices that are hacked into are normally those that don’t have any type of security at all. [Read more...]

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Bluetooth Profiles

December 28, 2010 By Leave a Comment
bluetooth profiles explained

Bluetooth Profiles

The Bluetooth Profiles will describe how the technology is used.  Profiles can be best described as vertical slices through the protocol stack.  It will define options in each protocol that are mandatory for the profile.

The Bluetooth Profiles will also define the parameter ranges for each protocol.  The concept of the profile is used to decrease the risk of interoperability problems between the different products.  These Bluetooth Profiles won’t normally define any additions to the Bluetooth specification, which is why you can add new profiles where you need them.  The Bluetooth underlying technology is the same, only the specific method that it’s used is defined. [Read more...]

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