LTE_WP_0703_RandS - Rohde & Schwarz Products: FSQ,...

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Subject to change – C.Gessner 03.2007 – 1MA111_0E Rohde & Schwarz Products: FSQ, FSQ-K100, FSQ-K101, SMU200A, SMU-K55, SMU-K255, SMATE200A, SMATE-K55, SMATE-K255, SMJ100A, SMJ-K55, SMJ-K255, WinIQSIM2, AFQ100A, AFQ-K255, AMU200A, AMU-K55, AMU-K255 UMTS Long Term Evolution (LTE) Technology Introduction Application Note 1MA111 Even with the introduction of HSDPA and HSUPA, evolution of UMTS has not reached its end. To ensure the competitiveness of UMTS for the next 10 years and beyond, UMTS Long Term Evolution (LTE) is being specified in 3GPP release 8. LTE, which is also known as Evolved UTRA and Evolved UTRAN, provides new physical layer concepts and protocol architecture for UMTS. This application note introduces LTE technology and testing aspects.
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LTE/E-UTRA 1MA111_0E 2 Rohde & Schwarz Contents 1 Introduction .............................................................................................. 3 2 Requirements for UMTS Long Term Evolution ....................................... 4 3 LTE Downlink Transmission Scheme ...................................................... 5 OFDMA .............................................................................................. 5 OFDMA parametrization ..................................................................... 6 Downlink Data Transmission .............................................................. 8 Downlink Reference Signal Structure and Cell Search ...................... 8 Downlink Physical Layer Procedures ............................................... 10 4 LTE Uplink Transmission Scheme ........................................................ 11 SC-FDMA ......................................................................................... 11 SC-FDMA Parametrization ............................................................... 12 Uplink Reference Signal Structure ................................................... 13 Uplink Physical Layer Procedures ................................................... 13 5 LTE MIMO Concepts ............................................................................. 15 Downlink MIMO ................................................................................ 15 Uplink MIMO .................................................................................... 17 6 LTE Protocol Architecture ...................................................................... 17 System Architecture Evolution (SAE) ............................................... 17 E-UTRAN ......................................................................................... 18 Layer 2 structure .............................................................................. 20 Transport channels .......................................................................... 21 Logical channels .............................................................................. 21 7 LTE MBMS Concepts ............................................................................ 22 8 LTE Testing ............................................................................................ 23 LTE RF testing ................................................................................. 23 LTE Layer 1 and Protocol Test ......................................................... 27 9 Abbreviations ......................................................................................... 27 10 Additional Information ........................................................................... 30 11 References ............................................................................................ 30 12 Ordering Information ............................................................................. 30 The following abbreviations are used in this application note for R&S test equipment: - The Vector Signal Generator R&S® SMU200A is referred to as the SMU200A. - The Vector Signal Generator R&S® SMATE200A is referred to as the SMATE200A. - The Vector Signal Generator R&S® SMJ100A is referred to as the SMJ100A. - SMU200A, SMATE200A, and SMJ100A in general is referred to as the SMx. - The IQ Modulation Generation R&S® AFQ100A is referred to as the AFQ100A. - The Baseband Signal Generator and Fading Simulator R&S® AMU200A is referred to as the AMU200A. - The Signal Analyzer R&S® FSQ is referred to as FSQ.
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LTE/E-UTRA 1MA111_0E 3 Rohde & Schwarz 1 Introduction Currently, UMTS networks worldwide are being upgraded to High Speed Downlink Packet Access (HSDPA) in order to increase data rate and capacity for downlink packet data. In the next step, High Speed Uplink Packet Access (HSUPA) will boost uplink performance in UMTS networks. While HSDPA was introduced as a 3GPP release 5 feature, HSUPA is an important feature of 3GPP release 6. The combination of HSDPA and HSUPA is often referred to as HSPA. However, even with the introduction of HSPA, evolution of UMTS has not reached its end. HSPA+ will bring significant enhancements in 3GPP release 7. Objective is to enhance performance of HSPA based radio networks in terms of spectrum efficiency, peak data rate and latency, and exploit the full potential of WCDMA based 5 MHz operation. Important features of HSPA+ are downlink MIMO (Multiple Input Multiple Output),
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LTE_WP_0703_RandS - Rohde & Schwarz Products: FSQ,...

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