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Bluetooth2, Piconets or personal area networks (PAN) are created by Bluetooth systems and may fill a room or may encompass no more distance than that between the cell phone on a belt clip and the headset on your head. Once a piconet is established, the members randomly hop frequencies in unison so they stay in touch with each other and avoid other piconets that may be operating in the same room. Final Connection Once the piconets are established, the Bluetooth connection between devices is created., Bluetooth Operations: How Does It Work Operations Bluetooth networking transmits data over low-power radio waves. It communicates on a frquency of 2.45 gigahertz. This frequency band has been set by intenational agreement for the use of industrial, scientific, and medical devices (ISM)., Bluetooth networking transmits data over low-power radio waves. It communicates on a frquency of 2.45 gigahertz. This frequency band has been set by intenational agreement for the use of industrial, scientific, and medical devices (ISM). Connection The older Bluetooth 1.0 standard has a maximum tranfer speed of 1 megabit per second (Mbps), while Bluetooth 2.0 can can manage up to 3 Mbps. Bluetooth 2.0 is backwards compatible with 1.0 devices., Spread-Spectrum Frequency Hopping - Makes it rare for more than one device to be transmitting on the same frequency at the same time. In Result The transmitters change frequencies 1,000 times every second meaning that more devices can make full use of a limited slice of radio spectrum., In order to use the Bluetooth technology, a device must be able to interpret certain Bluetooth profiles. The profiles define the possible applications and are general behaviors through which Bluetooth enabled devices communicate with other devices. Examples 1. Cordless Telephony Profile- defines how a cordless phone can be implemented over a Bluetooth wireless link. 2. Hands-free profile- describes how a gateway device can be used to place and receive calls for a hand-free device., The transmitters change frequencies 1,000 times every second meaning that more devices can make full use of a limited slice of radio spectrum. Radio Spectrum , In order to use the Bluetooth technology, a device must be able to interpret certain Bluetooth profiles. The profiles define the possible applications and are general behaviors through which Bluetooth enabled devices communicate with other devices. Piconets , Bluetooth networking transmits data over low-power radio waves. It communicates on a frquency of 2.45 gigahertz. This frequency band has been set by intenational agreement for the use of industrial, scientific, and medical devices (ISM). Connection Bluetooth can connect up to eight devices ., The transmitters change frequencies 1,000 times every second meaning that more devices can make full use of a limited slice of radio spectrum. Result of Range When Bluetooth-capable devices come in range of one another, an electronic conversation occurs to determine whether they have data to share or whether one need to control the other., Bluetooth Operations: How Does It Work Works on Two Levels 1. Physical level- Bluetooth is a radio-frequency stardard. 2. Protocol level- Products have to agree on when bits are sent, how many will be sent at a time ands how the parties in a conversation can be sure that the message received is the same as the message sent.
Bluetooth