Portwood_Bluetooth_Java potx

Bluetooth™ and Java™ Technologies in the Wireless Environment Michael T. Portwood, MS President & CEO Exuberance, LLC Agenda • What is Bluetooth™ wireless technology – Technology Overview – Weaknesses – Strengths • What is Jini™ technology • Bluetooth, Jini™ technology, and the Wireless Environment • Conclusion • Question & Answer What is Bluetooth™ Wireless Technology Overview • Technology started by Ericsson • Named after 10 th century Viking king (Harald Blatand) • A global wireless technology specification • “Always on” communication • Radio frequency based • Inexpensive • Intended for … – Portable devices – Desktop machines – Peripherals Bluetooth™ Wireless Technology Details • Baseband protocols – Circuit switching – Packet switching • Uses 24 GHz globally available unlicensed ISM radio band • Effective range is 10 meters • Slow communication rate (721Kbps) • Small number of stations – 8 devices / piconet – 3 voice channels • Secure – Spread spectrum Comparison of Wireless Technologies Feature & Function Infrared 802.11 Wireless LANs HomeRF Bluetooth™ Connection Type Infrared, narrow beam Spread spectrum Spread spectrum Spread spectrum Spectrum Optical 850 nm RF 2.4 GHz RF 2.4 GHz RF 2.4 GHz Transmission Power 100mW 100mW 100mW 1mW Data Rate 16Mbps 1Mbps, 2Mbps 1Mbps, 2Mbps 1Mbps Range 1 meter 100 meters Typical home 3 meters Supported Devices 2 127 8 Voice Channels 1 VOIP 6 3 Addressing 32 bit physical ID 48 bit MAC 48 bit MAC 48 bit MAC Bluetooth™ Technology Strengths • Inexpensive • Superior range compared with IR • Omnidirectional, not requiring line of sight • Designed for ad hoc networking • Both voice and data channels • Well defined specification • Large number of implementing companies Bluetooth™ Technology Weaknesses • Slow communication rate (1 Mbps) • Short networking range • Limited number of network connections • Large and complex specification (over 1000 pages) Bluetooth™ Wireless Technology Application Areas • Pure computing applications – Presentations – Card Scanning – Synchronizing Data – Remote Synchronization – Printing – Scanners • Ubiquous Applications – Communicator platforms – Electronic Books – Travel – Home Entertainment • System Applications – In-vehicle systems – Payment Systems – Behavior Enforcement – Collaboration – Mobile E-commerce What is Jini™ Technology • Jini™ Technology is designed for reliable distributed computing • Features – Simplicity – Reliability – Scalability What Jini™ Technology is not • Jini is not a name server • Jini is not JavaBeans or Enterprise JavaBeans (EJBs) • Jini is not RMI • Jini is not a distributed operating system . Bluetooth and Java Technologies in the Wireless Environment Michael T. Portwood, MS President & CEO Exuberance, LLC Agenda • What is Bluetooth wireless technology – Technology. Overview – Weaknesses – Strengths • What is Jini™ technology • Bluetooth, Jini™ technology, and the Wireless Environment • Conclusion • Question & Answer What is Bluetooth Wireless Technology Overview • Technology. companies Bluetooth Technology Weaknesses • Slow communication rate (1 Mbps) • Short networking range • Limited number of network connections • Large and complex specification (over 1000 pages) Bluetooth