DANORM
2012-04-09, 05:12 PM
Contents
1. Definitions, symbols and abbreviations . 5
1.1 Definitions ... 5
1.2 Abbreviations ......... 5
1.3 Symbols ...... 6
2. Introduction ........ 7
2.1 Generalities. 7
2.2 4G at 3GPP. 9
2.2.1 Introduction – first phase.......... 9
2.2.2 Introduction – second phase.. 10
2.2.3 LTE objective and requirements ...... 10
2.2.4 Requirements for E-UTRAN architecture and migration ......... 17
2.2.5 Radio resource management requirements... 17
2.2.6 Complexity requirements ....... 17
2.2.7 General requirements . 18
3. LTE Layer 1 general description.......... 19
3.1 General protocol architecture........ 19
3.2 Multiband operation. 19
3.3 Bandwidth considerations .. 20
3.4 Layer 1 FDD/TDD numerology...... 20
3.5 FDD frame structure (frame structure type 1) ....... 20
3.6 TDD frame structure (frame structure type 2) ....... 21
3.7 Timing ....... 22
3.8 Downlink slot structure....... 22
3.9 OFDM symbol structure – resource grid . 24
3.10 Uplink slot structure. 25
3.11 Resource grid....... 26
3.12 SC-FDMA symbol structure .......... 27
4. Downlink modulation OFDMA... 28
4.1 DL signal generation .......... 28
4.1.1 Scrambling .... 28
4.1.2 Modulation mapping.... 28
4.1.3 Layer mapping . 29
4.1.4 Layer pre-coding ......... 29
4.1.5 OFDM mapping 30
4.1.6 Basic OFDM signal generation ........ 30
4.2 Physical channels 30
4.2.1 OFDM mapping of PDSCH .... 30
4.2.2 OFDM mapping of PDCCH .... 30
4.2.3 OFDM mapping of CCPCH .... 31
4.3 Physical signals.... 31
4.3.1 Generation of reference signals ....... 31
4.3.2 OFDM mapping of reference signals .. 32
4.3.3 OFDM mapping of synchronization channels P-SCH and S-SCH ..... 34
3.3.1 Generation .. 35
3.3.2 Mapping ...... 35
4.4 DL macro diversity .. 35
4.5 Latency requirements under maximum load......... 35
And Please Add Reputation
1. Definitions, symbols and abbreviations . 5
1.1 Definitions ... 5
1.2 Abbreviations ......... 5
1.3 Symbols ...... 6
2. Introduction ........ 7
2.1 Generalities. 7
2.2 4G at 3GPP. 9
2.2.1 Introduction – first phase.......... 9
2.2.2 Introduction – second phase.. 10
2.2.3 LTE objective and requirements ...... 10
2.2.4 Requirements for E-UTRAN architecture and migration ......... 17
2.2.5 Radio resource management requirements... 17
2.2.6 Complexity requirements ....... 17
2.2.7 General requirements . 18
3. LTE Layer 1 general description.......... 19
3.1 General protocol architecture........ 19
3.2 Multiband operation. 19
3.3 Bandwidth considerations .. 20
3.4 Layer 1 FDD/TDD numerology...... 20
3.5 FDD frame structure (frame structure type 1) ....... 20
3.6 TDD frame structure (frame structure type 2) ....... 21
3.7 Timing ....... 22
3.8 Downlink slot structure....... 22
3.9 OFDM symbol structure – resource grid . 24
3.10 Uplink slot structure. 25
3.11 Resource grid....... 26
3.12 SC-FDMA symbol structure .......... 27
4. Downlink modulation OFDMA... 28
4.1 DL signal generation .......... 28
4.1.1 Scrambling .... 28
4.1.2 Modulation mapping.... 28
4.1.3 Layer mapping . 29
4.1.4 Layer pre-coding ......... 29
4.1.5 OFDM mapping 30
4.1.6 Basic OFDM signal generation ........ 30
4.2 Physical channels 30
4.2.1 OFDM mapping of PDSCH .... 30
4.2.2 OFDM mapping of PDCCH .... 30
4.2.3 OFDM mapping of CCPCH .... 31
4.3 Physical signals.... 31
4.3.1 Generation of reference signals ....... 31
4.3.2 OFDM mapping of reference signals .. 32
4.3.3 OFDM mapping of synchronization channels P-SCH and S-SCH ..... 34
3.3.1 Generation .. 35
3.3.2 Mapping ...... 35
4.4 DL macro diversity .. 35
4.5 Latency requirements under maximum load......... 35
And Please Add Reputation