Team X B Bhooma Reddy (200601224) Koundinya (200601201)
Bluetooth wireless technology is a short-range communications technology intended to replace the cables connecting portable and/or fixed devices while maintaining high levels of security. key features ◦ Robustness ◦ low power ◦ low cost ◦ short range
Ericsson mobile communications initiated in 1994. Special Interest Group (SIG) formed in 1998 with 5 companies.
Voice/Data Access Points ◦ connecting a computing device to a communicating device Peripheral Interconnects ◦ Connecting devices together Personal Area Networking ◦ ad-hoc formation
Bluetooth band ◦ 2.402 GHz – 2.480 GHz of ISM spread-spectrum frequency hopping (SSFH) ◦ Disallows interference 1600 hops/sec – time slot is 625 microsecond
Baseband: The Baseband and Link Control Layer enables the RF link Bluetooth units in a piconet. This layer uses inquiry and paging procedures to synchronize the transmission between different Bluetooth devices .
Link Manager Protocol (LMP): The link manager protocol is responsible for setting up link channels between Bluetooth devices after performing security methods like authentication and encryption by generating, exchanging and verifying linking and encryption keys and negotiating baseband packet size.
Logical Link Control and Adaptation Protocol (L2CAP): L2CAP packets carry payloads which are carried to the upper layer protocols.
Service Discovery Protocol (SDP): Using SDP, device information, services allowed and characteristics of the services are queried between Bluetooth enabled devices .
Cable Replacement Protocol (RFCOMM): RFCOMM is a serial line emulation protocol
Telephony Control Protocol: The Telephony Control - Binary (TCS Binary) and Telephony Control - AT Commands are used to establish speech and data calls between devices and control mobile phones and modems respectively.
Adopted Protocols: Bluetooth also supports PPP, TCP/UDP/IP, OBEX and WAP protocols to maximize interoperability.
Bluejacking ◦ Unknown person sends messages Bluebugging ◦ A hacker is remotely accesses user’s features Car whisperer ◦ A software to receive audio from car The device manufactures are releasing firmware upgrades to solve new problems
http://www.cs.utk.edu/~dasgupta/bluetooth /blueprotocols.htm http://electronics.howstuffworks.com/blueto oth.htm http://www.bluetooth.com ‘Bluetooth Architecture Overview’ by James Kardach, Intel Corporation
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