TI says coexistence problems with Bluetooth and wi-fi in same devices and areas solved
Posted on 17-Jun-2003 08:08.
Filed under: News
Texas instruments claim its new complete hardware and software solution enables consumers to simultaneously use Bluetooth and 802.11 wireless LAN (WLAN). Using this solution, manufacturers of mobile phones, smartphones, PDAs and laptops can overcome the coexistence problems inherent to close range 802.11b/g and Bluetooth operations because they share the 2.4 GHz band.
TI's new Bluetooth/802.11 coexistence package works with the company's 802.11 and Bluetooth product offerings to provide flexible support for the multiple standards within each wireless networking technology. Unlike current solutions designed exclusively for laptop applications, TI's coexistence package focuses on meeting the needs of portable device manufacturers. It offers low power, a small footprint for the complete Bluetooth/802.11 device and has no antennae isolation requirement which enables the co-location of both solutions in portable devices.
As opposed to current data-only implementations, TI's new coexistence technology supports the extremely critical scenario of a Bluetooth voice call coexisting with WLAN data transmissions without impacting the voice quality. Through smart algorithms, the platform provides peer-to-peer MAC-layer coordination and prioritizes the Bluetooth voice traffic. This maintains the voice and data quality by dynamically allocating bandwidth between Bluetooth and WLAN based on the traffic patterns in each network.
"Bluetooth and 802.11 coexistence has been a concern of the wireless networking industry since the late 1990s," said Allen Nogee, principal analyst with In-Stat/MDR. "By enabling voice and data services and the co-location of Bluetooth and 802.11, TI can drive the wireless industry to converge Bluetooth and Wi-Fi into cell phones and PDAs."
TI's Bluetooth / 802.11 coexistence package complements the most complete wireless technology portfolio in the industry. TI is dedicated to making seamless wireless convergence and true mobility of voice and data throughout any wireless network a reality for manufacturers and consumers. For example, consumers using a PDA based on TI's tri-wireless Wanda concept design can talk on the GSM, GPRS or CDMA network through their Bluetooth headset and download emails through WLAN at the same time without degrading the quality of the voice or data traffic.