GSM頻段[編輯]
以下14個頻段由3GPP TS 45.005(繼承於3GPP TS 05.05)定義。
系統 | 頻帶 | 上行(MHz) | 下行 (MHz) | 信道編號 | 對應UMTS/LTE頻段號 |
---|---|---|---|---|---|
T-GSM-380 | 380 | 380.2–389.8 | 390.2–399.8 | 動態 | |
T-GSM-410 | 410 | 410.2–419.8 | 420.2–429.8 | 動態 | |
GSM-450 | 450 | 450.6–457.6 | 460.6–467.6 | 259–293 | 31 |
GSM-480 | 480 | 479.0–486.0 | 489.0–496.0 | 306–340 | |
GSM-710 | 710 | 698.2–716.2 | 728.2–746.2 | 動態 | 12 |
GSM-750 | 750 | 747.2–762.2 | 777.2–792.2 | 438–511 | |
T-GSM-810 | 810 | 806.2–821.2 | 851.2–866.2 | 動態 | 27 |
GSM-850 | 850 | 824.2–849.2 | 869.2–894.2 | 128–251 | 5 |
P-GSM-900 | 900 | 890.0–915.0 | 935.0–960.0 | 1–124 | |
E-GSM-900 | 900 | 880.0–915.0 | 925.0–960.0 | 975–1023, 0-124 | 8 |
R-GSM-900 | 900 | 876.0–915.0 | 921.0–960.0 | 955–1023, 0-124 | |
T-GSM-900 | 900 | 870.4–876.0 | 915.4–921.0 | 動態 | |
DCS-1800 | 1800 | 1,710.2–1,784.8 | 1,805.2–1,879.8 | 512–885 | 3 |
PCS-1900 | 1900 | 1,850.2–1,909.8 | 1,930.2–1,989.8 | 512–810 | 2 |
- P-GSM,基準GSM-900頻帶
- E-GSM,擴展GSM-900頻帶(包括基準GSM-900頻帶)
- R-GSM,鐵路GSM-900頻帶(包括基準和擴展GSM-900頻帶)
- T-GSM,集群無線系統-GSM
GSM-900, GSM-1800 and EGSM/EGSM-900[編輯]
- GSM-900使用890–915MHz從裝置向基站發送信息(上行),使用935–960MHz接收信息(下行),其提供124個無線頻道(頻道號1-124),每個頻道占用200kHz。雙工間隔是45MHz。100kHz的保護帶寬被置於頻段的兩端。[2]
- GSM-1800使用1710–1785MHz從移動台向基站發送信息(上行),使用1805–1880MHz接收信息(下行), 其提供374個頻道(頻道號512-885)。 雙工間隔是95MHz。GSM-1800在英國也稱為DCS(數字行動電話服務),而在香港被稱為PCS[3]——為避免混淆,GSM-1900在世界上其他地區稱作PCS。MCA使用GSM1800。[4]
GSM-850和GSM-1900[編輯]
GSM-450[編輯]
另一種不太常見的GSM版本是GSM-450。[5]
參考資料[編輯]
- ^ 3GPP TS 05.05 version 8.20.0 Release 1999 Pages 9 and 10
- ^ Rappaport, Theodore S., Wireless Communications: Principles and Practices, 2nd Ed. Upper Saddle River, NJ: Prentice Hall, 2002. p. 554.
- ^ OFTA of HK, Office of the Telecommunications Authority 網際網路檔案館的存檔,存檔日期2005-05-18.
- ^ http://europa.eu/rapid/pressReleasesAction.do?reference=MEMO/08/220&format=HTML&aged=1&language=EN&guiLanguage=en
- ^ Ericsson, Nokia Eye 450 MHz GSM technology
外部連結[編輯]
- LDpost.com – History of GSM and More GSM history, technology, bands, multi-band phones
- 3GPP Specification detail TS 05.05 Specification 3GPP TS 05.05 Radio Transmission and Reception
- 3GPP Specification detail TS 45.005 Specification 3GPP TS 45.005 Radio Transmission and Reception
- 3GPP Specifications for group: R4 – Frequencies info for UMTS (TS 25.101/102/104/105)
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