What is Bluetooth? Full Information

BLUETOOTH

Introduction
What Is Bluetooth?
History Of Bluetooth
Importance Of Bluetooth
Characteristics Of Bluetooth
Security
Advantages Of Bluetooth
Disadvantages Of Bluetooth
Conclusion

Introduction

This technology provides short-range, wireless connectivity between devices.
It was intended to replace the cables connecting portable and/or fixed electronic devices.
Cables limit the mobility of the consumer and are easily lost or broken.

What Is Bluetooth?

Bluetooth is a wireless technology used to transfer data between different electronic devices.
Bluetooth is a high-speed, low-power microwave wireless link technology, designed to connect phones, laptops, PDAs and other portable equipments together with little or no work by the user.
The distance of data transmission is small in comparison to other modes of wireless communication.
This technology eradicates the use of cords, cables, adapters and permits the electronic devices to communicate wirelessly among each other.

History Of Bluetooth

Bluetooth was invented in 1994 by Ericsson.
The company later started working with a larger group of companies called the Bluetooth Special Interests Group, or “SIG”, to develop the technology into what it is today.
Bluetooth is not owned by any one company and is developed and maintained by SIG.
The name Bluetooth came from a code name originally used by SIG for the project and is a reference to a 10th century Danish King named Harold Bluetooth, who was responsible for uniting Norway, Sweden, and Denmark.

Importance Of Bluetooth

These have Replaced cables for transferring Information from one Electronic Device to another one.
These have decreased Strain like carrying phones while talking, making hands free to do another work.
This is cheaply Available.
It’s Mobility is also very Important as it doesn’t need any power outlet for Internet connection or any other items.

Characteristics Of Bluetooth

It separates the frequency band into hops. This spread spectrum is used to hop from one channel to another, which adds a strong layer of security.
Up to eight devices can be networked in a piconet.
Signals can be transmitted through walls and briefcases, thus eliminating theneed for line-of-sight.
Devices do not need to be pointed at each other, as signals are Omnidirectional.
Governments worldwide regulate it, so it is possible to utilize the same standard wherever one travels.

Security

Authentication and encryption is provided at the Link Manager layer.
The PIN is translated into a 128bit link key which is used for authentication.
After authentication the radios will settle on a suitable length encryption key to be used.
Bluetooth relies on PIN codes to establish trusted relationships between devices.

Advantages Of Bluetooth

• Eliminates wires
• Facilitates Data and Voice Communication
• Offers formation of Ad hoc networks
• Standardized protocol
• Free of charge
• Easy to use
• Low power consumes less battery
• Stationary and mobile environments

Disadvantages Of Bluetooth

• Data sent between two Bluetooth devices is very slow compared with Wifi transfer rate.
• Range of a Bluetooth Device is 15-30 feet (10 mts),depending upon the Device.
• Security is Biggest Disadvantage as transfer takes place through radio waves and a hacker can easily hack it.
• Battery usage is also a problem, it will make device out of power before it would have if Bluetooth was not powered on.

Conclusion

• A new global standard for data and voice.
• Eliminates Cables.
• Low Power, Low range, Low Cost network devices.
• Bluetooth seems to have a bright future after reviewing its benefits and wide use.
• Further improvements are planned to be made in

1. Data Rates
2. Power Reduction
3. Range