hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
TRUNG TÂM HẠ TẦNG MẠNG
MIỀN TRUNG
TỔNG QUAN VỀ MẠNG DI
ĐỘNG GSM 2G
1
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hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
Định nghĩa GSM
GSM là viết tắt của từ " The Global System for Mobile
Communication" - Mạng thông tin di động toàn cầu.
-GSM là tiêu chuẩn chung cho các thuê bao di động di
chuyển giữa các vị trí địa lý khác nhau mà vẫn giữ được
liên lạc.
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hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
Công nghệ của mạng GSM
Các mạng điện thoại GSM sử dụng công nghệ TDMA
- TDMA là viết tắt của từ " Time Division Multiple Access
" -Phân chia các truy cập theo thời gian .
Giải thích : Đây là công nghệ cho phép các máy di động
có thể sử dụng chung 1 kênh để đàm thoại, mỗi máy sẽ sử
dụng 1 khe thời gian để truyền và nhận thông tin
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hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
❖Dải tần:
•GSM 900:
890 –915 MHz:
Uplink (MS transmit)
935 - 960 MHz:
Downlink (MS receive)
ARFCN: 1-124
•GSM 1800:
1710 - 1885 MHz: Uplink
1805 - 1880 MHz: Downlink
ARFCN: 512 - 885
❖Carrier bandwidth: 200 kHz
❖Channels / carrier: 8
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hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34 hunglc1@viettel.com.vn_14/06/2021 10:50:34
890 MHz
45 MHz
960 MHz
935 MHz
200 kHz
MS transmit MS receive
4
1 2 3 4 124
123
1
8
23
4
5
6
7
1
8
23
4
5
6
7
123124
1 2 3 4
915 MHz