Skripta seminarskih radova - Eksplatacija telekomunikacionog saobracaja.pdf

7/25/2019 Skripta seminarskih radova - Eksplatacija telekomunikacionog saobracaja.pdf

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SKRIPTA SEMINARSKIH RADOVAiz

EKSPLOATACIJE TELEKOMUNIKACIONOGSAOBRAAJA

- NOVI SERVISI -2007


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S A D R A J

1. VIRTUELNE PRIVATNE MREA (VPN) ....................................................................3

2. VoIP PRENOS GLASA PREKO IP BAZIRANIH MREA ................................17

3. TRIPLE PLAY koncept dostave tri servisa ................................................................35

4. INTERNET PROTOKOL VERZIJE 6 IPv6 ..............................................................50

5. xDSL Digital Subscriber Line ........................................................................................60

6. EVOLUCIJA MOBILNE TELEFONIJE (1G, 2G, 3G, 4G) ....................................70

7. BEINE TEHNOLOGIJE (WPAN, WLAN) ............................................................84

8. METROPOLITEN BEINE MREE (WiMAX)....................................................94


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1. VIRTUELNE PRIVATNE MREA (VPN)


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2. VoIP PRENOS GLASA PREKO IP BAZIRANIH MREA


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3. TRIPLE PLAY koncept dostave tri servisa


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4. INTERNET PROTOKOL VERZIJE 6 IPv6


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5. xDSL Digital Subscriber Line


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6. EVOLUCIJA MOBILNE TELEFONIJE (1G, 2G, 3G, 4G)


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7. BEINE TEHNOLOGIJE (WPAN, WLAN)

1. ,

,

, .

, LapTop, (PDA), ...

?

, , . , . . , . , . , -. ,

. 1970.

IBM- . (Infra Red) . Hewlett-Packard . 100 kb/sec, . 1985.., FCC, , , ISM (Industrial Scientific Medical). : 902928 Hz, 24002483.5 Hz 5725- 5875 Hz.

2.4 GHz, 5 GHz., . . , , . , . . : , , , , . 1.1

WLAN . .


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2. TEXKE E

, (Narrwband),SS (Spread Spectrum)

IR (Infrared Technology). DSSS(Direct Sequency Spread Spectrum Technology) FHSS (Frequency Hoping Spread Spectrum).


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2.1.

2.1. , . . ,

1 10 b/sec. 100 b/sec.

2.1.

80-. 430 470 MHz, 430 450 b/sec , 450470 b/sec . , . .

: ( 5 20 Kb/s), a ,

. , .

2.2.

WLAN . , , , ( 2.1.1). . , . , , , .

2.3.

. . -

.. - . . , (). - FHSS, , , , -.

2.4.

, , - , .


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. , () . , . FH . -

, FEC (Forward Error Correction) . DSSS, () FHSS .

2.5. IR

IR , . , , () IR . () 1m,

PAN (Personal Area Network), WLAN . , . IR WLAN , .

3.

. : Ad hoc, -.

Ad hoc " " ,

. (. ).

, .

AP ( Access Point ),


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. . 100m 300 m . 15 50.

, () . , , . ,

, , . . , (roamin)

. handover . handover

. ( -backbone). , () . (Access Points)


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(Extension Points). - .

.

, .

4.

. . () . . CSMA/CA (Carrier Sense Multiple Access with Collisin Avoidance).

:() . , , . ( ) . RTS (Request to Send), ,

CTS (Clear To Send), , (6.5.6). WLAN

. , WLAN , . . :


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4.1

,

. . , , . DHSS FHSS, , . , .

WLAN IR , IR , .

.. , I 11 802. : WEP - Wired Equivalent Privacy, RC 4 , , . . , .

: . ,.

5.

.

. ISM .


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I802.11, HiperLANBluetooth, Open Air, HomeRF...

5.1. OPENAIR

WLAN Proxim, Open Air 802.11 . Proxim WLIF (Wireless LAN Interoperability Forum)..

5.2 HOME RF&SWAP

Home RF WLAN . je SWAP (Shared Wireless AccessProtocol), . 2.4 GHz. .

SWAP I 802.11 DECT (Digital EuropeanCordless Telephony) . 2 b/s 6

.


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5.3. BLUETOOTH

Bluetooth e , 1994.. Ericsson, 3COM,Nokia Intel. , .

Bluetooth SIG (Specisal Interest Group) ICT: 3COM, Ericsson, IBM, Intel, Lucent Technologies, icrosoft, Motorola, Nokia Toshiba. , 2000 . Bluetooth license agreeme , Bluetooth .

5.4. HIPERLAN

WLAN . ETSI (EuropeanTelecommunication Stamdards Institute). .

. 1996. . 23.529 b/s , 5

150 Hz 5.15 GHz 5.30 GHz 17.1 GHz 17.2 GHz. 5GHz, . . ,, (overhead), , .

6. I802.11

I 802. Ethernet IEEE 802.11 , . , 802.11a i 802.11b. 802.11 , , 54 Mbps (802.11g) , 802.11b 11 Mbps, 802.11a 1 11 Mbps.802.11b , Wi-Fi (Wireless Fidelity) 802.11a , Shift Keying .

802.11b , , . 802.11a 5 6 GHz , 54 Mbps , 6 12Mbps, 24Mbps . 802.11g , Apple ( ) , Airport Extreme.Ethernet CSMA/Ca (Carrier Sense Multiple Access with CollisionAvoidance)

7.

Wireless LAN


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. WLAN Ethernet , e . je WLAN , ,ak j.

e o a e WLAN o . , TV a Wireless ao, e e .

ao VoIP (Voice overInternet Protocol), e e e . a e e a a (

) IP e e . a e e .


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8. METROPOLITEN BEINE MREE (WiMAX)


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Skripta seminarskih radova - Eksplatacija telekomunikacionog saobracaja.pdf