{mosgoogle}Simultaneous Bluetooth and VoIP Using CSR's UniFi-1 Silicon.

CSR, a leading provider of wireless technology, is to demonstrate a Voice over Internet Protocol (VoIP) call using CSR's single-chip Wi-Fi silicon for consumer electronic devices, UniFi-1, while simultaneously co-existing with a Bluetooth HV3 connection to a headset at the 3GSM Congress at Barcelona. UniFi-1 and BlueCore4-ROM are embedded on a Wi-Fi / Bluetooth combination card, plugged into a PDA. This system will demonstrate the ease of voice calls over IP (VoIP) using a Session Initiation Protocol (SIP) client, via Wi-Fi connection from the PDA, to an access point terminating at a second SIP based user agent.

Using the SIP VoIP software, users of the two devices can speak freely and hear the conversation clearly, one user with the SIP user agent and the other using a Bluetooth headset paired with the PDA combination system.

The demonstration will show that UniFi, complete with UMA compliant 17dBm radio frequency output power, will not interfere with, or be disrupted by, the synchronous Bluetooth HV3 packets, providing a suitable quality of service end to end. CSR has optimised UniFi for this purpose and employs all commonly used frequency / time domain coexistence schemes for other 2.4GHz wireless standards.

The UniFi-1 product family, which started sampling at the end of 2004, has been designed specifically for easy integration into consumer electronic devices. The card features BlueCore4 ROM and UniFi-1 Portable, designed specifically for cellular phones and other pocket-sized devices. The single band (2.4GHz) 802.11b/g device features an exceptionally small chip-scale package, measuring only 6x6 m, which incorporates the RF, modem, baseband and hard MAC (media access controller) in a true single-chip format. The chip architecture itself, coupled with the lack of external components required, ensure that the UniFi silicon offers extremely low power consumption, a low bill of materials (BOM) and superior Wi-Fi performance.

"This is an opportunity to demonstrate to the general public a working VoIP Wi-Fi call with simultaneous co-existent Bluetooth utilising UniFi technology for Wi-Fi," commented Simon Finch, VP strategic marketing, CSR. "We believe that UniFi remains the world's smallest single-chip Wi-Fi product designed specifically for handheld devices such as mobile phones. Its tiny physical size and extremely low power consumption have effectively removed the barriers to mass market deployment of Wi-Fi in mobile devices."