BCM89359 Advance Data Sheet
Advanced Bluetooth/WLAN Coexistence
Advanced Bluetooth/WLAN Coexistence
The BCM89359 includes advanced coexistence technologies that are only possible with a Bluetooth/WLAN
integrated die solution. These coexistence technologies are targeted at small form-factor platforms, such as cell
phones and media players, including applications such as VoWLAN + SCO and Video-over-WLAN + High
Fidelity BT Stereo.
Support is provided for platforms that share a single antenna between Bluetooth and WLAN. Dual-antenna
applications are also supported. The BCM89359 radio architecture allows for lossless simultaneous Bluetooth
and WLAN reception for shared antenna applications. This is possible only via an integrated solution (shared
LNA and joint AGC algorithm). It has superior performance versus implementations that need to arbitrate
between Bluetooth and WLAN reception.
The BCM89359 integrated solution enables MAC-layer signaling (firmware) and a greater degree of sharing via
an enhanced coexistence interface. Information is exchanged between the Bluetooth and WLAN cores without
host processor involvement.
The BCM89359 also supports Transmit Power Control on the STA together with standard Bluetooth TPC to limit
mutual interference and receiver desensitization. Preemption mechanisms are utilized to prevent AP
transmissions from colliding with Bluetooth frames. Improved channel classification techniques have been
implemented in Bluetooth for faster and more accurate detection and elimination of interferers (including non-
WLAN 2.4 GHz interference).
The Bluetooth AFH classification is also enhanced by the WLAN core’s channel information.
Fast Connection (Interlaced Page and Inquiry Scans)
The BCM89359 supports page scan and inquiry scan modes that significantly reduce the average inquiry
response and connection times. These scanning modes are compatible with the Bluetooth version 2.1 page and
inquiry procedures.
Broadcom®
September 9, 2014 • 89359-DS100-R
Page 38
BROADCOM CONFIDENTIAL
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