tailieunhanh - Các mạng UTMS và công nghệ truy cập vô tuyến P5

THE UTRA1 TRANSMISSION SYSTEM UMTS SPECTRUM ALLOCATION The UMTS frequency ranges are part of the world wide spectrum allocation for 3rd or evolving 2nd generation systems. Figure illustrates the representation of the spectrum from major regions (. Europe, Japan, Korea, and USA). | The UMTS Network and Radio Access Technology Air Interface Techniques for Future Mobile Systems Jonathan P. Castro Copyright 2001 John Wiley Sons Ltd Print ISBN 0-471-81375-3 Online ISBN 0-470-84172-9 The UTRA1 Transmission System UMTS Spectrum Allocation The UMTS frequency ranges are part of the world wide spectrum allocation for 3rd or evolving 2nd generation systems. Figure illustrates the representation of the spectrum from major regions . Europe Japan Korea and USA . Figure Spectrum allocation representation for 3G systems. The distribution of the frequency bands from the allocated spectrum for the UTRA system is covered next. We present the ranges for the FDD and the TDD in parallel in order to unveil a complete view of the UMTS frequency assignment. UTRA Frequency Bands Table summarizes the frequency bands for the TDD and FDD modes as well as the frequency distribution for the User Equipment EU and the Base Station BS . Although in some cases the frequency ranges may be the same for both UE and BS they are noted separately for completeness. Additional spectrum allocations in ITU region 2 are FFS and deployment of UMTS in existing and other frequency bands is not precluded. Furthermore co-existence of TDD and FDD in the same bands now under study may be possible. 1 The UMTS Terrestrial Radio Access. 192 The UMTS Network and Radio Access Technology Table UTRA Frequency Bands in the MS and BS Side FDD MHz TDD MHz up- and downlink Case User equipment Base station User equipment Base station a Uplink MS to BS 1920-1980 1920-1980 1900-1920 1900-1920 Downlink BS to MS 2110-2170 2110-2170 2010-2025 2010-2025 Region 2 - . Europe b Uplink MS to BS 1850-1910 1850-1910 1850-1910 1850-1910 Downlink BS to MS 1930-1990 1930-1990 1930-1990 1930-1990 c 1910-1930 1910-1930 Radio T ransmission and Reception Aspects After the allocation of the frequency ranges for the UTRA modes in the preceding section in the following we present the .