[WangHongchao]

Dear all

I have a question about the feedback_channel_delay parameter.

Uplink channel options
• LTE_config.feedback_channel_delay: uplink delay in TTIs. When set to 0 TTIs, only the CQI reports experience zero delay. ACK reports have a minimum delay of one TTI

in LTE-A-DL-System-Level-Simulator-Rel-v1-9-Q2-2016\sim_main_launcher_files\LTE_sim_main_launcher_demo_RRH.m
LTE_config.feedback_channel_delay= 1; % In TTIs
this feedback set to 1, I think it should be 4， when ue received downlink data it will last 4 tti to feedback ACK to eNB.
I don’t know, my understand is right？

[Fjolla Ademaj]

Dear Wang

The value of the LTE_config.feedback_channel_delay is a desired paramter. Based on the 3GPP standard it is recommended a value of 3 or 4. You can addapt this value in your simulations accordingly.

Best regards,
Fjolla

[Author]

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