Data Communication Summary Project/Chapter11

Contents

1. 11�� (Fixed Wireless Technology

1.1. Fixed Wireless Technology

1.2. Wireless Local Loop

1.2.1. point-to-point

1.2.1.1. Point-To-Point Microwave
1.2.1.2. P-To-P Microwave Technologies
1.2.1.3. Free Space Optics(Laser)
1.2.1.4. Optical Networking

1.2.2. multipoint

1.2.2.1. Spread Spectrum

1.2.2.2. MMDS

1.2.2.3. LMDS

1.2.2.3.1. Competing Local Loop Tech.

1. 11�� (Fixed Wireless Technology ¶

�� 통�� 통�� 해 ��.(��...etc.)
�� + ��

1.1. Fixed Wireless Technology ¶

��
�� . 하�� 통�� 함
- �� 호확�� 1000테��트(페��트)�� 할 �� . 하�� 통�� (Local Loop)�� . �� 한�� 파�� 해 �� 하�� ...;;
�� 템 - ��화 + ��TV
- ��(��폭�� ) �� 템�� 할 �� 화�� TV �� 통�� .

1.2. Wireless Local Loop ¶

통�� 하�� 효�� .
- �� 하�� 파��하�� 하�� 테�� 하�� .
point-to-point �� multipoint �� .

1.2.1. point-to-point ¶

�� 형��. �� 파 �� 한��.

1.2.1.1. Point-To-Point Microwave ¶

1.2.1.2. P-To-P Microwave Technologies ¶

1.2.1.3. Free Space Optics(Laser) ¶

1.2.1.4. Optical Networking ¶

1.2.2. multipoint ¶

�� base station �� 하�� 하�� 폭�� 한�� .
표 11.1 ��하��.315�� .

1.2.2.1. Spread Spectrum ¶

�� wireless local loop system�� , ��학, ��학�� 파��(ISM band) �� 한��. �� IEEE 802.11b 표�� 한 ��템�� .
�� 할 �� . 하�� 하�� 통��해�� .
8km �� 한��. 표�� 11Mbps�� 하�� multipoint �� 폭�� 하�� 2~6Mbps ��.

1.2.2.2. MMDS ¶

Multipoint Multichannel Distribution System �� .
1970�� 45Km �� TV �� 하�� 해 TV �� 템�� .

1.2.2.3. LMDS ¶

1.2.2.3.1. Competing Local Loop Tech. ¶

2. Summary ¶

�� 하�� .
허�� 템�� ISM �� 할 �� , �� IEEE 802.11 �� 표�� 하�� 한��.
MMDS�� LMDS�� 템�� 형��하�� 해�� 템��. MMDS�� , �� 폭�� , LMDS�� , �� 폭�� .
�� 허�� , �� 템�� 한��. 하�� .

DataCommunicationSummaryProject

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