User's Manual

UniStone
Bluetooth Capabilities
Product Overview 23 T3130-8XV10PO5-7600, 2007-01-31
Park State, or has any synchronous logical transports, a role switch will not be
performed.
5.2.1.3 Dynamic Polling Strategy
In addition to the regular polling scheme, UniStone dynamically assigns unused slots to
links where data is exchanged. This adapts very well to bursty traffic and improves
throughput and latency on the links.
5.2.1.4 Adaptive Frequency Hopping (AFH)
UniStone supports adaptive frequency hopping according to the Bluetooth 2.0 + EDR
specification. AFH switch and channel classification are supported both as master and
slave. Channel classification from the host is also supported.
A number of HCI+ commands and events are available to provide information about AFH
operation. The commands Infineon_Enable_AFH_Info_Sending and Infineon_Disable_
AFH_Info_Sending turn on and off the Infineon AFH Info events that provide detailed
information about channel classification, channel maps, interferers, etc.
If enabled by the Infineon_Enable_Infineon_Events command, the Infineon AFH
Extraordinary RSSI event informs the host whenever extraordinary RSSI measurements
in unused slots have been started. This is done when the number of known good
channels has decreased below a critical limit and periodically after a defined time.
The Infineon_Set_AFH_Measurement_Period command can be used to configure the
duration of the AFH measurement period.
5.2.1.5 Channel Quality Driven Data Rate Change (CQDDR)
UniStone supports channel quality driven data rate change according to the Bluetooth
2.0 + EDR specification. A device that receives an LMP_preferred_rate message is not
required to follow all recommendations. UniStone normally at least follows the
recommendation whether to use forward error correction (FEC) or not. If possible,
recommendations about packet size and modulation scheme will be taken into account.
When UniStone sends an LMP_preferred_rate to another device the proposal always
includes preferences for all parameters.
The HCI+ commands Infineon_Enable_CQDDR_Info_Sending and Infineon_Disable_
CQDDR_Info_Sending turn on and off sending of the Infineon CQDDR Info event. This
event provides information to the host every time a new CQDDR proposal is sent to a
remote device.
5.2.2 Synchronous Links
UniStone supports up to two simultaneous synchronous links (SCO/eSCO).