??(performance)

1
?10? ??????

• ?????

2
??????
3
???????

• 3???
• ?????
• ???????
• ???????
• 3??????
• ??(performance)
• ???(reliability)
• ???(security)

4
?????????

• ????????
• ????????
• ????????
• ???????,??????????????????

5
?????????
6
???????(signal)

• ????????
• ??????????(energy)???,???????
• ??????????,?????????(Signals),???????,??????,?????
  ??????????,???????,???????????

7
???????????

• ??(Analog)
• ??(Digital)

8
????????
9
?????

• ?????????????????
• ?????????????????,????????
• ??????(Spectrum)????????????
• ???????(periodic signal)???????(sinusoidal)????(su
  m),??????(sum)???????(Fourier series)

10
??(Bandwidth)???????(Data Rate)

• ????????????(Bandwidth)
• ????,????????,?????????????,?????????(Effective
  Bandwidth)
• ???????????????????,????,??????????
• ???????????????????????????????,??????(Data
  Rate)????

11
??????????????
12
??(encoding)???(modulation)???
13
??????????

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

14
???????????
15
?????????
16
???????????
17
???????????

• ??????????(Digitization)??????,??????????????
• ????????????????????(PCM, Pulse Code
  Modulation),????????????(Sampling
  Theorem)??????????,??????????,???????????????????
  ,???????????,?????????????

18
PCM???
19
???????????

• ??????????????????,?????????????????????,?????????
  (Baseband Signals)
• ?????????,????????,??????????????,?????????(Spectr
  um)???????,???????????

20
??????

• ??(modulation)??????????(encode)??????????,???????
  ???????????????
• ???????modulating signal,?????????modulated
  signal
• ??????????????????????(high frequency
  carrier)???(amplitude)???(phase)???(frequency)
• ??????????????(demodulation)????????

21
????

• ?????(Guided Media)?????(Twisted
  Pair)??????(Coaxial Cable)???(Optical Fiber)
• ??????(Unguided Media)??????????,???????????????
  ????????????,??????????(Electromagnetic Wave)

22
???????????
23
???????????????????
24
???
25
????(coaxial cable)
26
??
27
??????(Unguided Media)

• ???(infrared)
• ?????
• ???(radio waves)

28
??????(Telecommunications System)?????

• ????
• ????(Local Loops)
• ????
• ????(Trunk Circuits)

29
???????
30
PSTN?????
31
???????
32
?????????????????
33
ISO/OSI????
34
?????????
35
ISO/OSI???????
36
???????????????
37
????????(Taxonomy)

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

38
???????
39
???????
40
???????????
41
Gigabit Ethernet???
42
????????
43
??????????
44
???????
45
?????????
46
?????

• ???????( TDM , Time-Division Multiplexing )
• ???????(FDM, Frequency-Division Multiplexing)

47
???????(???? www.cisco.com)
48
??????(???? www.cisco.com)
49
?????????(???? www.cisco.com)
50
???????(???? www.cisco.com)
51
??????????
52
????????????
53
???????????

• ????????????????????(1 G)
• ???(2G)?????????????(digital signal)
• ???(3G)????????????????????????????
• 3.5G????HSDPA(high-speed downlink packet access)
• 3.75G????HSUPA(high-speed uplink packet access)

54
????????????
55
?????(radio spectrum)
56
?????????

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

57
?????????????

• ??????(WWAN, wireless wide area network)
• ??????(WLAN, wireless local area network)

58
??802.11???????
59
?????????
60
?????????

• ???????????????????????
• ???????????????????,???????????
• ?????????????????????,?????????
• ??????????????????????

61
?11? ????????

• ?????

62
????????????

• ?????????ARPA(Advanced Research Projects Agency)
• 1968?ARPA??BBN??ARPANET,?????????
• TCP/IP???????1973?
• 1992?Internet Society??,CERN??World Wide Web
• 1995?NSF???????????NSF??,?????NSF??????????,???NSF
  NET??????(private network)
• 1996???,????Internet??????ISP?????,??MCI?ATT?SPRI
  NT????ISP??

63
???????
64
???????
65
???????
66
IP?????
67
URL(Uniform Resource Locator)

• URL?????WWW????????,RFC 1738???URL???(syntax)???(s
  emantics)
• ??Web server?????URL???,??http//www.ntu.edu.tw
• URL??????????,??????URL????????????,??http,???????
  ???(path)???,???????????????URL??,????????????URL

68
???????
69
???????
70
???????OSI model????
71
TCP/IP???ISO?????????
72
???TCP/IP????

• MAC??
• IP??
• Port??

73
??????????
74
?????????
75
IP?????
76
IP?????(x????0?1)
77
IP?????
78
????????????
79
?????ARP?

• ARP(Address Resolution Protocol)???????????????,??
  ?????IP?????????(Physical address)
• ??????????(?????)???,????????????????????,????????
  ,?????????,???????,?????????????????
• ?????????,????????????????,????,??????????IP??????
  ??????

80
?????????
81
IP???????
82
???IP??????ARP??
83
ARP????????
84
???????????
85
ARP???
86
?????????(routing protocol)
87
??????????????(port number)
88
?IP???????????
89
????IP

• ????????????
• ??????(routing table)????
• ????,??????????????
• ?????IP??????,????(authentication)????(privacy)?
• ?????????,???????????
• ????????(multicasting)???
• ?????IP????????????(roaming)?
• ?????????????
• ???????????,?????????

90
IPv4???header
91
IPv6???header
92
????IP(Mobile IP)

• Mobile IP???????,?Internet Protocol???,???????????
  ?,?????????????(??TCP)????
• PDA?????????????????????????????,?????????????????
  
• Mobile IP?????RFC 2002????,IETF(Internet
  Engineering Task Force)???Mobile IP???????

93
??????(mobile node)???IP??

• home address???????,??????TCP?????(TCP
  connections)??????????????,?????????????home
  address??????
• care-of address??????(point of
  attachment)???????????,???????????????????care-of
  address??????,????????????????

94
Mobile IP?????

• ??????home network???????home agent?????,???????ho
  me network?,home agent?????????????,????????????fo
  reign network
• ?????????????,???home agent??(register)??care-of
  address?????,home agent???????????????care-of
  address
• ????,???????????(destination address)????,??????pa
  cket transformation?redirection

95
Mobile IP?????
96
??????????
97
?VoIP?????
98
VoIP?????(call handling)