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Bluetooth high speed (BHS)

Bluetooth High Speed (BHS) is a specification of Bluetooth 3.0 that uses existing radio technologies to increase the data rate. BHS technology is backward compatible with older Bluetooth devices and uses the same Bluetooth protocols on existing Bluetooth connections.

Bluetooth High Speed (BHS) operates with 79 channels at 1 MHz each and supports data rates of 3 Mbit/s in normal operation. Conceptually, Bluetooth High Speed forms piconetworks in master- slave constellations with up to eight nodes - one master and seven slaves - sharing the data rate. The slaves can only communicate with the master, which forwards the data packets of the slaves to the desired slave. A scatter network can be formed from several piconets.

To increase the data rate, the actual high speed, Bluetooth 3.0 provides for the use of Alternate MAC/ PHY( AMP). With this technology, another data channel can be established in parallel to the Bluetooth link via an alternative medium. This can be a WLAN connection according to 802.11, but also a UWB connection for ultra-wideband. Data rates of 100 Mbit/s are conceivable via such connections.

BHS technology improves security and optimizes energy consumption because the high-speed channel is only activated when it is actually needed. In addition, BHS technology is characterized by the shortest latency times. It is suitable for the fast transmission of large data volumes such as media data for MP3 players or streaming and video files.

Informations:
Englisch: Bluetooth high speed - BHS
Updated at: 04.12.2011
#Words: 228
Links: Bluetooth, data rate, megahertz (MHz), operation, slave
Translations: DE
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