Why Why Why Why
Content
從 4G 發展現況探討行動通訊裝置 發 展現況探討行動通訊裝置 應用 產品開發趨勢 Presented by YL Huang, Ph.D. November 2012
Jan. 2012
Agenda
• 4G LTE Current Status • 4G LTE Key Technologies and Features • 4G LTE Mobile/Fixed Device Application • Summary
Confidential Material for Internal Use Only
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LTE Deployment Status • GSA confirms that 105 operators have llaunched aunched commercial LTE LTE networks in 48 countries. (Oct. 1, ‘2012.) ‘2012.) • GSA forecasts that 159 networks will be commercially launched in 68 countries by the end of 2012.
Confidential Material for Internal Use Only
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3
LTE Spectrum
FDD •Spectrum dispersed. •Some bands are even overlapped. •Usually several bands are needed in one terminal. •Some devices has both FDD and TDD.
UL/DL
Confidential Material for Internal Use Only
TDD
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Spectrum Efficiency • Spectrum efficiency (bits/sec/Hz) is the major factor that operators concern. • Spectrum re-farmed is another way of improving spectrum efficiency for an operator, which has spectrum for elder generations. • The benefits from deploying LTE LTE networks in re-farmed spectrum are increasingly recognized by regulators and the industry.
• Some examples of spectrum re-farmed. Band
3, 1800 MHz (EU, DCS1800). DC S1800). Band 4, 1700 MHz (US, AWS-1, Advanced Wireless Services).
Confidential Material for Internal Use Only
5
Jan. 2012
Agenda
• 4G LTE Current Status • 4G LTE Key Technologies and Features • 4G LTE Mobile/Fixed Device Application • Summary
Confidential Material for Internal Use Only
2
LTE Deployment Status • GSA confirms that 105 operators have llaunched aunched commercial LTE LTE networks in 48 countries. (Oct. 1, ‘2012.) ‘2012.) • GSA forecasts that 159 networks will be commercially launched in 68 countries by the end of 2012.
Confidential Material for Internal Use Only
3
3
LTE Spectrum
FDD •Spectrum dispersed. •Some bands are even overlapped. •Usually several bands are needed in one terminal. •Some devices has both FDD and TDD.
UL/DL
Confidential Material for Internal Use Only
TDD
4
Spectrum Efficiency • Spectrum efficiency (bits/sec/Hz) is the major factor that operators concern. • Spectrum re-farmed is another way of improving spectrum efficiency for an operator, which has spectrum for elder generations. • The benefits from deploying LTE LTE networks in re-farmed spectrum are increasingly recognized by regulators and the industry.
• Some examples of spectrum re-farmed. Band
3, 1800 MHz (EU, DCS1800). DC S1800). Band 4, 1700 MHz (US, AWS-1, Advanced Wireless Services).
Confidential Material for Internal Use Only
5
