Computer Science - Bluetooth - Presentation - Ian Gifford, Study notes of Computer Numerical Control

Download Computer Science - Bluetooth - Presentation - Ian Gifford and more Study notes Computer Numerical Control in PDF only on Docsity! 1 Bluetooth RF Specifications Specified for low cost, single chip implementation – Noise floor margin for substrate noise and low current LNA – Linearity set by near-far problem – In-band image allows low-cost low IF – VCO phase noise enables integrated VCO – TX-RX turn around time enables single synthesizer – 2.4 ISM band chosen for global use and process capabilities Sensitivity traded for low cost integration capability 2 M M SS S S P sb sb P P The Bluetooth network topology • Radio designation – Connected radios can be master or slave – Radios are symmetric (same radio can be master or slave) • Piconet – Master can connect to 7 simultaneous or 200+ inactive (parked) slaves per piconet – Each piconet has maximum capacity (1 MSps) – Unique hopping pattern/ID • Scatternet – Piconets can coexist in time and space 5 Inter-connected Piconets - The Scatternet • Complex slave master master/slave Printer Laptop Laptop Mouse Mobile Phone Headset LAN Access Point Source: Kris Fleming 20Mar01 [Bluetooth-BOF-at-50th-IETF-PAN-Talk.ppt] 6 Bluetooth SIG Document Process • Designed to promote interoperability • Three type of documents – Protocols – Profiles – Test Documents • Document are confidential until adopted – Intellectually Property license trigged by the adoption date – SIG unlikely to release documents until adopted Source: Kris Fleming 20Mar01 [Bluetooth-BOF-at-50th-IETF-PAN-Talk.ppt] 7 Application Framework and Support Link Manager and L2CAP Radio & Baseband Host Controller Interface RF Baseband Audio Link Manager L2CAP Other TCS RFCOMM Data The Bluetooth protocols • A hardware/software description • An application framework SDP Applications C on tro l 10 a: legacy application b: Bluetooth specific application transport protocol group tr rt r t l r application group li ti r transport protocolstransport protocols The application group middleware protocol group i l r r t l r middleware protocolsiddleware protocols Bluetooth adaptationBluetooth adaptation common servicescommon services platform APIsplatform APIs profile applications profile applications new/future applications (a) (b) (b) (b) (b) Source: Dr. Chatschik Bisdikian 11 Interoperability & Profiles Profiles P ro to co ls Applications• Represents default solution for a usage model • Vertical slice through the protocol stack • Basis for interoperability and logo requirements • Each Bluetooth device supports one or more profiles Source: Dr. Chatschik Bisdikian [BT_OVERVIEW_UNIVMARYLAND_03_2001.PPT] 12 Profiles (spec v.1) • Generic Access Profile – Service Discovery Application Profile – Serial Port Profile • Dial-up Networking Profile • Fax Profile • Headset Profile • LAN Access Profile (using PPP) • Generic Object Exchange Profile – File Transfer Profile – Object Push Profile – Synchronization Profile – TCS_BIN-based profiles • Cordless Telephony Profile • Intercom Profile Source: Dr. Chatschik Bisdikian [BT_OVERVIEW_UNIVMARYLAND_03_2001.PPT] 15 More on Bluetooth? • Join the Bluetooth SIG and participate – http://www.bluetooth.org • Join the IEEE WG for WPANs and participate – http://ieee802.org/15 • Join the IETF IP over Bluetooth (IPoBT) BoF – http://internet.motlabs.com • Also visit the Bluetooth(TM) Weblog – http://bluetooth.weblogs.com/ 16 More on Bluetooth? (cont) • More Info: • http://www.bluetooth.com/developer/specification/specification.asp • More Info: • http://internet.motlabs.com/books.htm 17 Who Is Bluetooth? • Harald Blaatand “Bluetooth” II – King of Denmark 940-981 • Son of Gorm the Old (King of Denmark) and Thyra Danebod (daughter of King Ethelred of England) This is one of two Runic stones erected in his capitol city of Jelling (central Jutland) – This is the front of the stone depicting the chivalry of Harald. – The stone’s inscription (“runes”) say: • Harald christianized the Danes • Harald controlled Denmark and Norway • Harald thinks notebooks and cellular phones should seamlessly communicate Source: Jim Kardach, Intel, [MobileDemo.ppt] 8Jun00 IEEE ComSoc http://grouper.ieee.org/groups/802/15/pub/2000/Jul00/00184r0P802-15_TG1-Bluetooth_IEEE-ComSoc-Pitch-8Jun00.ppt Questions ? ? e oO 21 Thank-you