sta2416 STMicroelectronics, sta2416 Datasheet - Page 24

• Manufacturer Part Number: sta2416
• Description: Bluetooth?? Baseband With Integrated Flash
• Manufacturer: STMicroelectronics

General specification
5.7
5.8
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V1.2 detailed functions - adaptive frequency hopping
User perspective - adaptive frequency hopping
In the Bluetooth
over 79 channels. Since WLAN 802.11 has become popular, there are specification
improvements in the 1.2-SIG spec for Bluetooth technology where the Bluetooth units can
avoid the jammed bands and thereby provide an improved co-existence with WLAN.
Technical perspective - adaptive frequency hopping
Figure 6.
First the master and/or the slaves identify the jammed channels. The master decides on the
channel distribution and informs the involved slaves. The master and the slaves, at a
predefined instant, switch to the new channel distribution scheme.
No longer are jammed channels re-inserted into the channel distribution scheme. AFH uses
the same hop frequency for transmission as for reception
V1.2 detailed functions - faster connection
User perspective - faster connection
This feature gives the user about 65% faster connection on average when enabled
compared to Bluetooth
Technical perspective - faster connection
The faster Inquiry function is based on a removed/shortened random back off and also a
new interlaced inquiry scan scheme.
The faster page function is based on interlaced page scan.
AFH
f
f
®
specification 1.1 the Bluetooth wireless devices hop in the 2.4 GHz band
®
specification 1.1 connection procedure.
AFH(19<N<79)
AFH(79)
WLAN used frequency
WLAN used frequency
t
t
STA2416