Blueooth.ppt

Bluetooth? Wireless System Joe Decuir Microsoft Chair, Seattle COM-19 Jdecuir@ Note: Bluetooth? is a trademark of Ericsson Agenda Wireless Overview http://www//hwdev/wireless Bluetooth System Overview /winhec Windows Bluetooth Stack /hwdev/bluetooth Wireless Overview Wireless trends Wide Area Networks (WAN) Local Area Networks (LAN) Personal Area Networks (PAN) Scenarios Adhoc Home Small business Enterprise, ISP Wireless Trends IP networks Always connected (packet vs circuit mode) Increased bandwidth Convenience Moving from vertical market to horizontal markets Moving from proprietary to standards based Proliferation of smart devices New scenarios enabled Outsourcing Adhoc networks Wireless Media Infrared: short range and directional Personal Area Networks: short range radio Bluetooth, IEEE 802.15.1 Local Area Networks: medium range radio IEEE 802.11(a,b), HyperLAN, HomeRF, etc Wide Area Networks: long range radio Cellular systems: GSM, TDMA, CDMA, “3G” Broadband: high speed fixed radio IEEE 802.16 Wide-Area Wireless Local-Area Wireless Personal Area Wireless Ad Hoc Networks A Connected Home A Connected Small Office Enterprise Information at your fingertips At meetings, in the office, on the road Reliable, secure, multimedia LAN An ISP Connected Public Space Discovery of proximity services (flight schedules at airport, mall directories, …) Wireless Architecture Requirements “Just works” Always connected Unified transport: IP Mobility Unified security model Adhoc QoS Performance Windows Wireless Architecture Just Works No configuration Especially when roaming CDPD Configure Network Equipment Identifier 802.11 Configure network name and security keys Per location Bluetooth Configure PIN numbers Per device What is an adhoc network? No network infrastructure at all E.g. back to back Ethernet Automatic IP addressing when no DHCP server available NetBT broadcast for adhoc name resolution Interconnections not managed Multiple interconnections to destinations Loops i