1. 3G Standards ¶

맨 �� ISDN�� 능 - 144 kbps - �� 모�� (2.5G�� 능�� 만 �� 만 ��능��)
extra spectrum�� modulation techniques�� 능. CDMA ��(�� 럼�� 러�� handoff 메��)
�� - federal standards
- GSM�� 루는 CDMA - ��럽, ��본
- CDMA2000 - 미��
Global roaming - �� multimode phone��만 ��능

1.1. IMT-2000(ITU) ¶

3G : ITU��
2000�� 미(�� 목�� )
- 2000��
- 2000kbps�� data rates
- 2000Mhz 대��
�� 는 ��.

1.1.1. 3G defined ¶

Data rates

144kbps - ��
384kbps - TV ��
2Mbps - ��물 내�� 는 ��

�� 느낀 ��, Packet Switching Backbone��

1.1.2. Service Requirements ¶

3G는 ��, ��, 방�� 미디��를 �� 는 �� 목�� .

따�� 6�� service�� broad class 디�� 만듬

Voice(��) : �� . ��리 ��는 메��, Conference Calling
Messaging(��) : e-mail�� , Extension of paging(��)->(뭐�� 메�� 능��는��.��). ��불��
Switched Data(��) : �� + dial-up �� .
Medium Multimedia(��) : �� 대�� 3G ��.
High Multimedia(��) : �� 디��, CD�� 디��. �� - 4G�� 미루��
Interactive(��) High Multimedia

�� .

1.1.3. Spectrum Requirements ¶

3G ��를 �� 대(�� global roaming�� )를 �� 났��.

�� 는 ��럼만�� 능��.

Extra Spectrum �� .

1.1.4. Compatibility ¶

�� 면 ��만 불��능��, ��미 �� CDMA�� , TDMA�� . �� 루는�� .

Direct Upgrades : ��미 �� 는 ��, �� 를 ��면��, �� 더 �� 모듈�� . 대부�� 2G는 TDMA�� direct upgrades는 2.5G�� .
Roaming : operation�� multiple modes - �� 른 3G System.
Handover : ��는 �� 밖�� 벗�� 2G �� handover��.

모�� 는 ��.

1.2. W-CDMA(Wideband CDMA) ¶

GSM�� handover�� 능�� 디�� 는데, GSM�� W-CDMA��
5Mhz�� 대��
cdmaOne�� : �� 동�� . GPS ��. 마�� . negative feedback�� , 보�� 롤 메��
Gold codes�� 불리��는, �� 른 ��딩 �� . QPSK
TDMA�� soft handover�� 능��만, GSM�� 들��.(GSM�� soft handover를 �� )
QPSK를 ��는 W-CDMA는 4Mbps를 ��룰�� . ��능��면 �� 명�� . �� , 마�� 내부�� 2Mbps, ��부�� 384kbps ��능��.

1.2.1. TD-CDMA(Time Division W-CDMA) ¶

멀�� CDMA. 듀�� TDMA(��링�� 링�� 를 ��) - ��럼 �� .

1.2.2. UMTS and FOMA ¶

1.2.2.1. UMTS ¶

��럽 ��
�� 모바�� 뮤�� 립��는 �� - ��리��리��

1.2.2.2. FOMA ¶

��본 ��(1999's UMTS + 메�� + content based billing)

1.2.3. Upgrading to 3.5G ¶

3G + �� - ��
HSDPA�� - �� .

1.3. CDMA-2000 ¶

2G �� cdmaOne만�� CDMA��. ��부�� 3G�� CDMA-2000�� .
CDMA2000 3xMC - �� -> �� 대��
불�� W-CDMA�� . chip rate��문��.
- CDMA2000 : cdmaOne��
- W-CDMA : GSM�� 밍 �� 맞��
1Xtreme : �� 만�� 3xMC�� 내�� - ��만 됨

1.3.1. 1xMC/1xRTT(��) ¶

�� 만, �� 디�� 며, Walsh Codes를 ��번 �� 배�� 량�� .

3G�� 못 미��(2.5G)

1.3.2. 1X Enhanced Version ¶

1xMC + �� 모듈��

1xMC�� QPSK대�� 8-PSK(3bit)�� 16-QAM(4bit)를 ��

��

1xEV-DO(Data only) : HDR
1xEV-DV(Data/Voice) : �� . 1XEV-DO�� 모듈��

1.3.3. 3xMC/3xRTT ¶

IMT2000 �� . W-CDMA보�� 럼 ��

cdmaOne�� 물��받�� - chip rate�� GPS ��밍

��는 ��는 데 ��.

1xMC�� 더 많�� 대��
미��는 �� W-CDMA를 ��본�� 3.5G ��

1.4. EDGE ¶

TDMA를 �� 는 3G. GSM�� . GSM�� GPRS��부�� 모�� 물��받��
�� 는 TDMA ��부�� .
200kHz��는 �� -> CDMA�� 무��막�� 매�� -> D-AMPS ��들�� 매��.
ITU�� IMT-2000��

1.4.1. Enhanced GPRS ¶

GSM, GPRS�� - 모듈�� - 8PSK��

21.4kbps -> 64.2kbps

�� GSM. GPRS 등��

1.4.2. Edge Compact ¶

데��만 ��됨(목��리��는 ��됨). 많�� 롤 �� 략

따�� 목��리를 �� D-AMPS + 데��를 �� EDGE Compact ��

1.5. Reality Check ¶

�� 만 ��보��는 �� .
�� 보�� 더 �� 보�� .

2. Summary ¶

3�� 3G �� : W-CDMA, CDMA2000, EDGE. ��들�� IMT-2000�� 묶�� 며, 384kbps를 ��는 ��, �� 방�� .
- W-CDMA는 GSM�� 디��며, �� 럼�� . �� UMTS�� , 3.5G �� .
- CDMA2000�� cdmaOne��부�� 만, 몇몇�� 는 �� .
- EDGE는 GSM�� GPRS��부�� , ��른 ��들�� 럼�� .
�� 3G �� 2001�� 들��. FOMA�� 불리��는 W-CDMA�� 변�� 본�� 떴��. ��른 ��는 UMTS를 ��는 맨��(��디�� ?), CDMA2000�� 는 남�� .

DataCommunicationSummaryProject

Data Communication Summary Project/Chapter5

Contents

1. 3G Standards ¶

1.1. IMT-2000(ITU) ¶

1.1.1. 3G defined ¶

1.1.2. Service Requirements ¶

1.1.3. Spectrum Requirements ¶

1.1.4. Compatibility ¶

1.2. W-CDMA(Wideband CDMA) ¶

1.2.1. TD-CDMA(Time Division W-CDMA) ¶

1.2.2. UMTS and FOMA ¶

1.2.2.1. UMTS ¶

1.2.2.2. FOMA ¶

1.2.3. Upgrading to 3.5G ¶

1.3. CDMA-2000 ¶

1.3.1. 1xMC/1xRTT(��) ¶

1.3.2. 1X Enhanced Version ¶

1.3.3. 3xMC/3xRTT ¶

1.4. EDGE ¶

1.4.1. Enhanced GPRS ¶

1.4.2. Edge Compact ¶

1.5. Reality Check ¶

2. Summary ¶

Data Communication Summary Project/Chapter5

Contents

1. 3G Standards ¶

1.1. IMT-2000(ITU) ¶

1.1.1. 3G defined ¶

1.1.2. Service Requirements ¶

1.1.3. Spectrum Requirements ¶

1.1.4. Compatibility ¶

1.2. W-CDMA(Wideband CDMA) ¶

1.2.1. TD-CDMA(Time Division W-CDMA) ¶

1.2.2. UMTS and FOMA ¶

1.2.2.1. UMTS ¶

1.2.2.2. FOMA ¶

1.2.3. Upgrading to 3.5G ¶

1.3. CDMA-2000 ¶

1.3.1. 1xMC/1xRTT(������������) ¶

1.3.2. 1X Enhanced Version ¶

1.3.3. 3xMC/3xRTT ¶

1.4. EDGE ¶

1.4.1. Enhanced GPRS ¶

1.4.2. Edge Compact ¶

1.5. Reality Check ¶

2. Summary ¶

1.3.1. 1xMC/1xRTT(��) ¶