1
 Bluetooth is a packet based protocol
with a master slave structure . One
master may communicate with up to 7
slaves.
In...
BlueTooth- Some Specifications
4
 Uses unlicensed 2.402 - 2.480 GHz frequency range.
 Frequency hopping spread spectrum ...
Potential Bluetooth Markets
5
Bluetooth Market Forecast
9
Nov’03: 100M Bluetooth compliant devices worldwide
Bluetooth Protocol Stack
 Adopted Protocols
 PPP(Point-To-Point Protocol)
 TCP/UDP/IP
 OBEX-Session Protocol for IrDA(...
Bluetooth Security
 Supports Unidirectional or Mutual Encryption based
on a Secret Link key Shared Between Two Devices.
...
• Devices and Services can be Set for Different
Levels of Security
Two Trust Levels are Set for Devices:
Trusted Device :...
Bluetooth Security
 3 Levels of Service Access
 Require Authorization and Authentication.
 Require Authentication Only....
But is this Wireless Link Secure?
18
Newsflash: Jan 2001: Norwegian “hackers” crack a
Bluetooth transmission
Bluetooth vs. the Rest (cont’d)
19
802.11
2.4 GHz,
DSSS
11 chips/bit
11Mbps
+20 dBm
50m
128 devices
CSMA/CA
Optional WEP
O...
Short blutooth present
Short blutooth present
Short blutooth present
Short blutooth present
Short blutooth present
Short blutooth present
Short blutooth present
Short blutooth present
Short blutooth present
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Short blutooth present

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This topic of Bluetooth presentation is very useful in many communications.it can be very helpfull in various kind,just check it out you can get an idea

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Short blutooth present

  1. 1. 1
  2. 2.  Bluetooth is a packet based protocol with a master slave structure . One master may communicate with up to 7 slaves. In Bluetooth technology ,the device which sends the data is called as MASTER. Where as the devices that receive the data is called as SLAVE.
  3. 3. BlueTooth- Some Specifications 4  Uses unlicensed 2.402 - 2.480 GHz frequency range.  Frequency hopping spread spectrum 79 hops separated by 1 MHz.  Maximum frequency hopping rate: 1600 hops/sec.  Nominal range: 10 cm to 10 meters.  Nominal antenna power: 0 dBm.  One complete Bluetooth data packet can be transmitted within each 625 msec hop slot.
  4. 4. Potential Bluetooth Markets 5
  5. 5. Bluetooth Market Forecast 9 Nov’03: 100M Bluetooth compliant devices worldwide
  6. 6. Bluetooth Protocol Stack  Adopted Protocols  PPP(Point-To-Point Protocol)  TCP/UDP/IP  OBEX-Session Protocol for IrDA(Infrared Data Association)  Contents Format(e.g. vCard, vCalendar)  WAP-Wireless Application Protocol 11
  7. 7. Bluetooth Security  Supports Unidirectional or Mutual Encryption based on a Secret Link key Shared Between Two Devices.  Security Defined In 3 modes: Mode1- No Security. Mode 2 - Service Level Security: Not Established Before Channel is Established at L2CAP. Mode 3 - Link Level Security: Device Initiates Security Before LMP Link is Setup. 13
  8. 8. • Devices and Services can be Set for Different Levels of Security Two Trust Levels are Set for Devices: Trusted Device : Fixed Relationship and Unrestricted Access to All Services. Untrusted : No Permanent relationship and Restricted Services.
  9. 9. Bluetooth Security  3 Levels of Service Access  Require Authorization and Authentication.  Require Authentication Only.  Default Security for Legacy Applications. 16
  10. 10. But is this Wireless Link Secure? 18 Newsflash: Jan 2001: Norwegian “hackers” crack a Bluetooth transmission
  11. 11. Bluetooth vs. the Rest (cont’d) 19 802.11 2.4 GHz, DSSS 11 chips/bit 11Mbps +20 dBm 50m 128 devices CSMA/CA Optional WEP Optional HomeRF 2.4GHz, FHSS 50 hops/s 1 Mbps +20 dBm 50m 128 devices CSMA/CA Optional Optional Bluetooth 2.4 GHz, FHSS 1000+hops/s 1Mbps 0, +20dBm 1-10m, 50m 8 devices, Piconet Encryption Yes Parameter Technology Data Rate Power Range Topology Security Voice Channel ZigBee (proposed) 2.4 GHz,DSSS 15 chips/bit 40 kbits/s 0dBm 100m 100s devices, CSMA/CA Not yet No Bluetooth – aka IEEE 802.15.1 Zig Bee – aka IEEE 802.15.4

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