InConcert®

Broadcom's InConcert® technology is designed to allow Bluetooth® and Wi-Fi® wireless devices to co-exist and operate collaboratively in mobile devices such as netbooks, notebooks and smartphones. InConcert technology lets products enabled with Broadcom Bluetooth and Wi-Fi chips intelligently share the 2.4 GHz frequency range, coordinating transmissions to optimize throughput and performance as required by a range of applications.

As the leader in both Bluetooth and Wi-Fi connectivity, Broadcom is in a unique position to provide combined solutions that deliver leading performance for both radio technologies and apply interference mitigation techniques to make them work better together.

  • Competitive Bluetooth/Wi-Fi co-existence implementations have used various techniques, including:
    • 2/3-wire co-existence schemes with standards-based signaling
    • Software co-existence schemes to augment limited hardware capabilities
    In either of these cases, there are performance and user experience limitations especially when multiple Bluetooth peripherals are being serviced.

  • InConcert technology uses advanced 4-wire hardware co-existence schemes with intelligent interference mitigation mechanisms determined by the type and number of Bluetooth peripherals being serviced. InConcert implementations are carefully tested with a number of different Bluetooth headset and mouse products that are currently shipping so that Broadcom InConcert combo modules deliver a satisfying user experience, thereby mitigating return risks and support calls.

  • InConcert implementation builds on these design fundamentals, significantly improving Wi-Fi throughputs while ensuring a consistent Bluetooth user experience. This is done using adaptive algorithms that determine the exact use case (e.g. mouse, stereo audio and internet download), and tune medium access accordingly.
    • Other improvements are enabled by not restricting the medium access mechanism to standards-based Time Division Multiplexing (TDM) schemes, wherein Bluetooth and Wi-Fi are alternately given full transmission/reception rights without interference from the other radio.
  • With InConcert, a netbook user could listen to music over Bluetooth headsets at the same time as downloading a large data file over a Wi-Fi connection. Since the two technologies operate in the same radio frequency, the Wi-Fi transmission could cause some degradation of the music stream. However, InConcert minimizes this radio interference to deliver a more satisfying user experience.


802.11 Wireless LAN Solutions

Part # Description
BCM4325 Low-Power 802.11a/b/g with Bluetooth® 2.1 + EDR and FM
BCM4329 Low-Power 802.11n with Bluetooth® 2.1 + EDR and FM (Tx and Rx)
BCM94312HMGB 802.11g and Bluetooth 3.0 Half MiniCard Reference Design
BCM943224HMB Dual-Band 802.11n and Bluetooth 3.0 Half MiniCard Reference Design
BCM943225HMB Single-Band 802.11n and Bluetooth 3.0 Half MiniCard Reference Design
BCM94704 802.11a/g AP/Router Reference Design

Bluetooth RF Silicon and Software Solutions

Blutonium® Bluetooth® Silicon

Part # Description
BCM4325 Low-Power 802.11a/b/g with Bluetooth® 2.1 + EDR and FM
BCM4329 Low-Power 802.11n with Bluetooth® 2.1 + EDR and FM (Tx and Rx)
BCM94312HMGB 802.11g and Bluetooth 3.0 Half MiniCard Reference Design
BCM943224HMB Dual-Band 802.11n and Bluetooth 3.0 Half MiniCard Reference Design
BCM943225HMB Single-Band 802.11n and Bluetooth 3.0 Half MiniCard Reference Design

Video