LTE TDD from A-Z
Differences between LTE-FDD and LTE-TDD
- TDD Portions in major 3GPP LTE Specifications
- Introduction to LTE TDD
- LTE Key Parameters for FDD and TDD
- Why LTE-TDD? Why variable Downlink-Uplink Subframes?
- UE LTE Categories for FDD & TDD
- Time / Frequency View on OFDM: The "Grid", Subcarrier Spacing in LTE, Transmission Bandwidth in LTE, LTE specific OFDM/FFT and Subcarrier Parameters
- Downlink Reference Signals (Pilot) - Common Reference Signals RSRP and RSRQ
- Categorization of Smart Antenna's
- DL Transmission Modes & DL Control Information
- Principle Operation of Closed Loop
- Channel Quality Indicator (CQI) definition
- Introduction to Spatial Multiplexing N x TX & N x RX
- The Frequency Bands for LTE, UMTS & GSM Rel. 10
- Frequency Distribution among Operators in Germany
- E-UTRAN Channel Bandwidth (Rel. 10)
- E-ARFCN of TDD up to Rel. 10 (3GPP TS 36.101 V10.6.0 (2012-03))
- Basic Layer 1 Details of TDD
- UL/DL Configurations of LTE-TDD
- Frames in LTE
- Example UL-DL Subframe Configuration 0 & Special Subframe S
- The Special Subframe, Downlink Pilot Timeslot (DwPTS), Uplink Pilot Timeslot (UpPTS)
- TD-LTE and LTE FDD Differences - Part1
- TD-LTE Coverage
- TD-LTE and LTE FDD Differences Part 2
- Purpose of the Special Subframe S in LTE-TDD
- DwPTS, GP and UpPTS Fields
- Transmission Timing Adjustments & Timing Advance Offset
- Timing Advance and the Purpose of Guard Period GP, The Guard Period
- LTE-TDD Random Access Channels
- Preamble Formats 0 and 4 in Comparison, The S-RACH, Details of PRACH Format #4 in UpPTS, Basic PRACH Random Access Procedure, Multiple RACH in the Frequency Domain
- Sounding Reference Signals - SRS
- Sounding Procedure SRS uplink Transmission (FDD)
- Mapping of Channels in E-UTRAN- same for FDD and TDD
- Time Frequency Grid for DL OFDMA & UL SC-FDMA
- DL Resource Element, Resource Block & UL RB Structure
- UL & DL Time-Frequency Grid - Draft
- Uplink Demodulation Reference Signals, Uplink Sounding Reference Signals (SRS), Uplink Layer 1/Layer 2 Control Signaling on PUCCH, Physical Uplink Shared Channel (PUSCH)
- PUCCH & UCI (Uplink Control Indicator) UL Control Signaling
- PUCCH Format 1, 1a and 1b, PUCCH Format 2, 2a and 2b Uplink Control Signaling , PUSCH taking over Control Signaling, Information transferred by each PUCCH Format, Primary and Secondary Sync Signals FDD vs. TDD , Details on Primary Synchronization Signal (PSS) Sequences, Details on Secondary Synchronization Signal (SSS) Sequences, Cell Search Performance
- Physical Cell ID derived by PSS+SSS
- Content and Periodicity of the PBCH, Note to Rel.
- Cell Search Procedure in LTE
- SSS Detection in LTE Four Possibilities, Synchronization Sequences and Cell Search in LTE, Secondary Synchronization Signal (SSS) Sequences, Antenna Ports and their associated Reference Signals
- TD-LTE Beamforming
- Introduction to Transmission Mode 7 (Rel.)
- UE Specific Reference Signals
- Port 5 and MBMS, Antenna Port 7 and 8 ( from Rel. 9 onwards)
- Dual Layer Beamforming Transmission 8 and 9
- TD-SCDMA and TD-LTE
- Resource Allocation and HARQ
- Downlink Resource Allocation in FDD
- Uplink Resource Allocation in FDD, FDD HARQ versus TDD HARQ & ACK-NACK Timing
- DL and UL maximum HARQ Processes per Subframe Assignment
- Downlink Resource Allocation
- Multiple HARQ-ACK/NACK in uplink for sa1 to sa6, Downlink Assignment Index
- UL Resource Allocation
- Other Features
- UL TTI bundling
- Semi Persistent Scheduling in TD-LTE
- Sounding Reference Signals (SRS) in TD-LTE
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