The Bluetooth wireless technology is a relatively new low-power short-range radio technology that allows automated seamless and user-friendly connectivity. Bluetooth has given rise to what is today known as the Personal Area Network (PAN), a Bluetooth network technology that allows the tying up of self-configuring seamless peer-to-peer network information, both voice and data. The uses of a Bluetooth network are many and diverse and its usage is only limited by the imagination of companies. While the functionality of a WLAN device stands alone on a network, a Bluetooth component however requires a host. However a host can, unlike a WLAN component, be any Bluetooth-enabled device such as a camera, cell phone, PDA or a bar code reader.
A Bluetooth network capability can also allow a mobile phone or a cordless modem to connect to a PC and create a dial-up connection to the internet without a physical phone line. Thus a laptop will automatically utilize a nearby Bluetooth enabled cell phone to make a connection without the need to touch the phone which may be in a briefcase or in a coat pocket. A Bluetooth network also allows a peer-to-peer file exchange without a network infrastructure. Thus, an electronic slide presentation may be shared with the audiences who have their Bluetooth devices in the room without the need to configuring the devices network settings.
This ability of using a Bluetooth network to connect to nearby devices without the need of going through lengthy setup processes allows devices to perform data synchronization such as contact lists, tasks information, calendars and even allows printers with embedded Bluetooth technology to print documents conveniently. The network topology of a Bluetooth network is different from other wireless topologies. In a Bluetooth network, a Bluetooth device can either be a master or a slave. In addition, all the devices must synchronize to a set frequency called a hopping sequence. The master device sets the hopping sequence and the slaves synchronize to the master.
Since Bluetooth networks are constantly being formed, modified and dissolved, a Bluetooth network is more diverse and dynamic than a WLAN. In addition, since different usage profiles can be represented by different Bluetooth devices, Bluetooth devices can interact in many different ways. Thus, the service discovery concept is used to determine the kind of Bluetooth devices present on a Bluetooth network and what kind of services they desire or offer. A Bluetooth network security is also considered very strong. Not surprising therefore that the Bluetooth technology has been incorporated into virtually every mobile device today.
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