Question: In the processing of the Sidelink Discovery Channel (SLDC) in E-UTRA, how does the data arrival at the coding unit differ from other downlink channels?
Option 1: Data arrives continuously without intervals between transport blocks.
Option 2: Data arrives in batches of multiple transport blocks every transmission time interval (TTI).
Option 3: Data arrives in the form of a maximum of one transport block every transmission time interval (TTI).
Option 4: There is no defined pattern for data arrival at the coding unit for SLDC.
Explanation: The correct answer highlights a key difference in how data is processed for the Sidelink Discovery Channel compared to other downlink channels. The specification that data arrives in the form of a maximum of one transport block every TTI (Transmission Time Interval) underscores the unique handling of SLDC, optimizing it for its specific use case in device-to-device communications, which requires efficient and predictable data exchange without the overhead of frequent or variable-rate transmissions. This approach ensures streamlined processing and reduces complexity in the coding unit for this particular channel type.