Bluetooth Whitepapers

Bluetooth

Bluetooth Whitepapers

Title: Bluetooth as a 3G Enabler - (PDF)
Author: Chris Angell - Consultant with Intercai Mondiale
Abstract:
The next generation of cellular telephony provided by the evolution of existing digital systems (GPRS, EDGE, and HSCSD) or through the development of new ones will offer the user greater flexibility and capability then ever before. This paper describes how Bluetooth, a new short range communications device, will open up a host of new applications that will extend the role of the mobile phone far beyond today's convential phone service. In fact, it may be true to say that the commercial viability of the new developments is only likely to be realised if Bluetooth is successful in delivering the applications that will create the anticipated 'datawave'.
Title: Reliability of WLANs in Bluetooth Environment - (PDF)
Author: Jim Zyren - Harris Semiconductor
Abstract:
The issue of coexistence between IEEE 802.11 hige speed Direct Sequence Spread Spectrum (DSSS) and Bluetooth radios with bot radio types located within a mixed environment is studied. A network topology, propagation model, and user traffic loads are postulated. The reliability of IEEE 802.11 Hi Rate DSSS radios is then estimated under the stated conditions.
Title: Bluetooth Voice and Data Performace in 802.11 DS WLAN Environment - (PDF)
Author: Jaap C. Haartsen, Stefan Zubes - Ericsson
Abstract:
In this document, the impact of a 20dBm 802.11 Direct-Sequence WLAN system on a 0dBm Bluetooth link is studied. A typical office environment is assumed with a small number of WLAN access points and a large number of WLAN terminals. The study differentiates between the impact on the Bluetooth data link and the impact on the Bluetooth voice link. Results show that a Bluetooth voice link is disturbed in less than 1% of the cases when the Bluetooth operating distance remains below 2m. If teh operating distance increases to 10m, the probability of a disturbance increases to 8%. For a Bluetooth data link, a throughput reduction of more than 10% occurs with 24% probability at an opperating distance of 10m. Because of the limited frequency overlap of the WLAN and Bluetooth systems, the throughput reduction in the Bluetooth system can never exceed 22%.
Title: Microwave Oven Interference on Wireless LANs Operating in the 2.4 GHz ISM Band - (PDF)
Author: Ad Kameerman, Nedim Erkocevic - Lucent Technologies
Abstract:
Commercial microwave ovens as applied in restaurants have two magnetron tubes and compared to domestic kitchen counterparts they spread the higher RF power and radiated heating energy more evenly. The domestic kitchen or residential microwave ovens have only one magnetron tube. The interference from the commercial type of microve ovens is more difficult to characterise than the interference from the residential ones. The commercial type of microwave ovens radiate a CW-like interference that sweeps over tens of MHz during two bursts per mains power cycle. The residential ones give a CW-like interference that has a more or less stable frequency near 2.45 GHz occurring once per mains power cycle. The impact of the interference from teh commercial type of microwave ovens on wireless LANs conforming the IEEE 802.11 standard for both DSSS (direct sequence spread spectrum) and FHSS (frequency hopping spread spectrum) has been evaluated.
Title: Multi-Transport OBEX (An Object Exchange Model for Use with Multiple Network Transports) - (PDF)
Author: Doug Kogan - Extended Systems
Description:
The Multi-Transport OBEX Protocol is designed to allow one or more adaptation layers to provide access to various network transports. Multi-transport OBEX provides a clean, well-defined interface between the OBEX protocol component and the OBEX transport adapter module. This allows easy expansion of the types of transports supported beyond those provided for IrDA infrared and Bluetooth radio frequency.nsport OBEX Protocol is designed to allow one or more adaptation layers to provide access to various network transports. Multi-transport OBEX provides a clean, well-defined interface between the OBEX protocol component and the OBEX transport adapter module. This allows easy expansion of the types of transports supported beyond those provided for IrDA infrared and Bluetooth radio frequency.
Title: Bluetooth Interoperability Position Paper (PDF)
Author: Mike Nelson - Extended Systems
Abstract:
This document describes what Extended Systems (ESI) is doing to ensure interoperability in every Bluetooth hardware device it manufactures. We encourage our OEM customers of XTNDAccess Blue SDK to do the same. This document also describes what ESI is doing to ensure that XTNDAccess Blue SDK will be interoperable with other hardware platforms and that it will comply with Bluetooth test specifications when they are complete.
Title: IrDA versus Bluetooth: A Complementary Comparison - (HTML link to two PDFs)
Author: David Suvak - Extended Systems
Abstract:
At first glance, it may appear that IrDA and Bluetooth technologies compete with each other in the marketplace. Industry analysts have openly wondered whether both technologies can survive, given that both provide short-range wireless connectivity. But if you examine the benefits of each technology, you can see that Bluetooth and IrDA are both critical to the marketplace. Each technology has advantages and drawbacks and neither can meet all users' needs. In fact, together, Bluetooth and IrDA create a powerful short-range wireless story.
Title: Various Whitepapers - (HTML)
Author: AU-System
Abstract:
This page lists several whitepapers available on the company's site. Topics include 3G, IP telephony, location-based mobile services, wireless banking and gaming, Wireless Application Protocol, and Bluetooth.