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Bluetooth: Technology and Market Perspectives Stefano Galli Stefano Galli, Ph.D. Research Scientist Telcordia Technologies, Inc. Room: MCC-1J124B 445 South.

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Presentation on theme: "Bluetooth: Technology and Market Perspectives Stefano Galli Stefano Galli, Ph.D. Research Scientist Telcordia Technologies, Inc. Room: MCC-1J124B 445 South."— Presentation transcript:

1 Bluetooth: Technology and Market Perspectives Stefano Galli Stefano Galli, Ph.D. Research Scientist Telcordia Technologies, Inc. Room: MCC-1J124B 445 South Street Morristown, NJ Tel.: (973) Fax: (973) Copyright © 2001 Telcordia Technologies. All Rights Reserved WOCC’01, Newark, New Jersey, April 20, 2001.

2 Telcordia Technologies Proprietary - Copyright WOCC 2001 Summary of presentation 1) Bluetooth: what it is, what does it offer 2) Bluetooth in the world 3) Marketing perspectives 4) Telcordia’s Applied Research analysis 5) Conclusions

3 Telcordia Technologies Proprietary - Copyright WOCC 2001 What is Bluetooth ? A de facto standard developed by a wide industry consortium for a low-cost, short-range radio link in the ISM band (2.4 GHz) between mobile PCs, mobile phones and other portable devices. EricssonIntelIBMToshibaNokia The Bluetooth Special Interest Group was founded in March 1998 and is led by Ericsson, Intel, IBM, Toshiba and Nokia. Lucent3ComMicrosoftMotorola In December 1999, Lucent, 3Com, Microsoft, and Motorola have joined. Currently, there are over 2,000 members in the Bluetooth consortium. Bluetooth: what is it, what does it offer

4 Telcordia Technologies Proprietary - Copyright WOCC 2001 Bluetooth is essentially designed as A cheap and fast cable replacement wireless solution; A three-in-one phone: cordless phone at home, mobile-phone, walkie-talkie; The ultimate headset: allows to connect to a mobile phone or a laptop. Bluetooth’s major design limitations Range: up to 30 feet; more recently, up to 150 feet Data rate: up to 700 kb/s (nominally, 1 Mb/s) Mobility: no handoff capability Bluetooth: what is it, what does it offer

5 Telcordia Technologies Proprietary - Copyright WOCC 2001 New possible applications are found every day!! Bluetooth in the world

6 Telcordia Technologies Proprietary - Copyright WOCC 2001 EUROPE Swedish railways (8/2000): customers can book, pay train tickets and connect to other networks. This is the first Bluetooth public consumer trial.USA Axis Communications (5/2000): developing (and demonstrating) a wireless solution that allows Bluetooth devices to gain access to a wide variety of services. Bluetooth “hot spots” will be created in offices, homes, hotels, retail establishments and public places (airports, stations, theaters).AUSTRALIA BlueLinx (4/2000): patenting a system that uses Bluetooth to create “Quiet Zones” in restaurants and other public places. Bluetooth in the world

7 Telcordia Technologies Proprietary - Copyright WOCC 2001 Ericsson Handsfree accessories: headsets, phone adapters. First mobile phones with Bluetooth and WAP capability. Silicon Wave, GigaAnt Components (radio modems, antennas, controllers).Digianswer Protocol analyzers, RS232 adapters, development kits, emulation boards. Nokia, Motorola, Toshiba, IBM PC adapters and enabled laptops. Products in the market

8 Telcordia Technologies Proprietary - Copyright WOCC 2001 Bluetooth marketing strategy: Target the mobile phone as a means for the mass-market penetration of all Bluetooth enabled devices.  A Bluetooth enabled phone will become a sophisticated service enabler and will be able to offer many services. The mobile phone will soon become the focal point of the convergence of computing devices. Marketing perspectives

9 Telcordia Technologies Proprietary - Copyright WOCC 2001 Perfect strategy for Europe where: Mobile phones have been one of the most successful products. There is only one standard (and it’s also a good one!!): GSM. Mobile phones have become “socially vital” devices. But what about the US? Marketing perspectives

10 Telcordia Technologies Proprietary - Copyright WOCC 2001 The situation in the US is different: Social importance of mobile phones is more limited than in Europe. Too many standards. Limited coverage. Questionable roaming policy and interoperability between providers. However, if Bluetooth is successful in Europe it might get here with 3G phones Marketing perspectives

11 Telcordia Technologies Proprietary - Copyright WOCC 2001 So many scenarios….... how much “hype” is there in Bluetooth ? Is the initial design suitable for all these scenarios? How is its performance? Is it a competitor of HomeRF, IEEE or Ricochet? Is it harmful to other solutions in the same 2.4 GHz band? Bluetooth issues

12 Telcordia Technologies Proprietary - Copyright WOCC 2001 Bluetooth’s competitors Bluetooth is intended to create PANs not LANs or WANs and, therefore, there are no true competitors!! Home networking or W-LAN application Inefficient IP networking; Limited range (performance degradation for long range); Up to eight devices per PAN; Very flexible and, therefore, not optimized for these applications HomeRF and still have a clear advantage over Bluetooth!

13 Telcordia Technologies Proprietary - Copyright WOCC 2001 Bluetooth’s competitors The worst enemy of Bluetooth is ….. Bluetooth!! complete Achieve complete interoperability between different devices from different producers; profiles To avoid interoperability chaos protocol profiles have been defined (collections of messages, procedures, features and parameter settings that must be used in order to provide specific services); To avoid interoperability chaos, there should be an efficient BT compliance program, but there is not!! compliance program, but there is not!!

14 Telcordia Technologies Proprietary - Copyright WOCC 2001 Telcordia’s Applied Research Analysis Telcordia’s AR analysis: Point-to-point link performance Coverage and capacity Networking issues Coexistence with other solutions Published results: Published results: S. Galli, D. Wong, M. Barton, J. Koshy, “Bluetooth Technology: Link Performance Evaluation and Networking Issues for Long-Range Applications”, European Wireless Conference, Dresden, Germany, Sep.12-14, S. Galli, D. Wong, M. Barton, J. Koshy, “Bluetooth Technology: Link Performance Evaluation and Networking Issues for Long-Range Applications”, European Wireless Conference, Dresden, Germany, Sep.12-14, S. Galli, “HomeRF and Bluetooth: Assessment of the Point-to-Point Link Performance”, S. Galli, “HomeRF and Bluetooth: Assessment of the Point-to-Point Link Performance”, IEEE Broadband Wireless Summit, IBWS 2001, Las Vegas, USA, May 9-10, IEEE Broadband Wireless Summit, IBWS 2001, Las Vegas, USA, May 9-10, 2001.

15 Telcordia Technologies Proprietary - Copyright WOCC 2001 Telcordia’s Applied Research Analysis Point-to-point link Bluetooth is robust for short range: low packet-error rate below Performance degradation for longer range: error correcting codes do not offset multipath effects (packet-error rate around ). Coverage and capacity (low power case) Up to 7 collocated piconets can coexist and operate at full performance. For equally spaced piconets, up to 20 piconets can be supported in a 4,000 square feet area (conference hall). Networking issues Inefficiency in IP networking (added overhead  lower throughput).. Problems in LAN emulation.

16 Telcordia Technologies Proprietary - Copyright WOCC 2001 Coexistence Both HomeRF and can heavily degrade Bluetooth’s performances; Bluetooth should not be harmful to HomeRF or Important research topics In general, coexistence with other devices operating in the 2.4 GHz band such as HomeRF, In particular, coexistence of Bluetooth and (the most likely scenario). Mobility issues. Integration with 3G phones. Telcordia’s Applied Research Analysis

17 Telcordia Technologies Proprietary - Copyright WOCC 2001 The physical layer looks well designed and robust. Main problems: long range performance degradation, coexistence and IP inefficiency. It is not a competitor of HomeRF or It is GSM-centric, but it is not a European technology. The hype consisted in advertising Bluetooth as a “universal” solution …., but it is definitely not. Conclusions

18 Telcordia Technologies Proprietary - Copyright WOCC 2001 Telecoms, computing and consumer electronics will merge  Bluetooth may be the application that will accelerate this trend Conclusions

19 Telcordia Technologies Proprietary - Copyright WOCC 2001 Technical Overview

20 Telcordia Technologies Proprietary - Copyright WOCC 2001 It operates in 2.4 GHz band; Nominal transmitted power is 1, 2.5 or 100 mW (range: 30 to 150 feet); Gross rate of 1 Mb/s (Binary GFSK modulation); Frequency hopping: 1,600 hops per second; Error correcting codes; Time Division Duplexing. Technical overview: Physical Layer

21 Telcordia Technologies Proprietary - Copyright WOCC 2001 Technical overview: Protocol Stack

22 Telcordia Technologies Proprietary - Copyright WOCC 2001 Piconet piconet When two Bluetooth devices come within range of each other and set up a connection a piconet is formed. Up to 8 units can form a piconet. masterslaves In a piconet there is only one master and the other devices act as slaves. Any device can act either as a master or a slave (no HW or SW difference). Technical overview: Networking

23 Telcordia Technologies Proprietary - Copyright WOCC 2001 Scatternet scatternet Several piconets that coexist in the same area, form a scatternet. Each piconet within a scatternet uses different hop sequences A slave in a piconet can become a master in another piconet. Technical overview: Networking

24 Telcordia Technologies Proprietary - Copyright WOCC 2001 Technical overview: Performances FEP for BPSK over Rayleigh fading channel (packet=240 bits, uncoded).

25 Telcordia Technologies Proprietary - Copyright WOCC 2001 Technical overview: Performances FEP for BPSK over Rayleigh fading channel (packet=2744 bits, uncoded).

26 Telcordia Technologies Proprietary - Copyright WOCC 2001 Technical overview: Performances FEP for BPSK over Rayleigh fading channel (packet=240 bits, repetition code).

27 Telcordia Technologies Proprietary - Copyright WOCC 2001 Technical overview: Performances FEP for BPSK over Rayleigh fading channel (packet=2745 bits, Hamming code).


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