??????(Bluetooth)

1
??????(Bluetooth)

• B90901143 ??? ???

2
??

• ?????
• ????
• ????
• ?????????

3
?????

• ????????
• ???????????
• ??????????????

4
?????

• ?????????
• ???Circuit switch, ???Packet switch
• ??????????
• 2.4GHz
• ?????????
• 1?chip 10 U.S.
• 1mW ????? 10m
• ??????1M(??????721Kb/s)

5
?????

• ??
• ????
• ????
• ????
• ??
• ????
• ????

6
?????

• ????????????
• Piconet, Scatternet

Piconet
Slave
Slave
Master
Master
Scatternet
Slave
7
?????

• ????????????
• 1?Master, 7?Slave, 255?Park

8
??

• ?????
• ????
• ????
• ?????????

9
?????
?? Hi Fi ???
??USB???
????????
????
10
??

• ?????
• ????
• ????
• ?????????

11
????
12
Radio????

• ???ISM?????
• 2.4000GHz2.4835???83.5MHz
• ?79???, ??????1MHz
• ????
• 100mW, 2.5mW, 1mW
• ???????
• ????

13
????

• ??????
• ????(Multiplex)????
• ??????????
• Bluetooth??GFSK

f1 ? 0
f2 ? 1
14
Baseband????

• ????
• BD_ADDR
• LAP
• UAP
• NAP

MSB
LSB
Non-significant Address Part 16 bits
Upper Address Part 8 bits
Lower Address Part 24 bits

• AM_ADDR
• 3bit

LAP
UAP
NAP

• PM_ADDR
• 8bit

15
??

• ??????
• ??????1600?

Channel 1
Channel 6
Channel 15

• ????

Channel 45

• ????

16
????

• 1/3FEC(Forward Error Correction)
• ????????
• 2/3FEC(Forward Error Correction)
• ???????????
• ARQ(Automatic Repeat Request)
• ACK, NAK

17
??????

• L2CAP
• ??Baseband

• AT-command
• ????

• TCS Binary
• ????

• OBEX
• ???

• RFCOMM
• ??RS232

18
??????

• ???????????
• 1 Non-secure
• 2 Service level enforced security
• 3 Link level enforced security

??????
Service level
Link level
19
??

• ?????
• ????
• ????
• ?????????

20
?????????

• Bluetooth vs HomeRF
• ?HomeRF Working Group?1998???
• ????

?? HomeRF ??
???? 1Mbit/s for 2FSK 2Mbit/s for 4FSK 1/Mbit/s
???? ????6? ????3?
???? 50m 10m
???? 128 8
21
??????????

• 802.11b?????????????
• HomeRF?????????
• Bluetooth????????????

22
????????
Bluetooth 802.11b HomeRF
???? ?????? ?????? ????
???? 2.4GHz 2.4GHz 2.4GHz
???? 723kbps 11/5.5/2/1Mbps 0.8/1.6 Mbps
???? 10/100M 100M 50M
????? yes no yes
23
????

• ?????? ????
• Communication System Haykin 4th Ed
• http//www.aiptek.com.tw/chinese/product/bluetooth
  /bluetooth.htm
• ??????