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LTE: Does the eNodeB inform UE to use a specific MCS for the allocated resource in PUSCH ?

+3 votes
1,104 views

EnodeB considers CQI feedback from the UE before creating the transport block.
As per my understanding PUCCH resource allocation is not very dynamic. In this case how UE decide to use a specific MCS (Modulation and Coding Scheme) while using PUCCH channel ?

posted Oct 13, 2016 by Harshita

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1 Answer

+1 vote

Hi ,

For contriol channels ENB will not convey any MCS because it is always QPSK modulation. Both ENB ENB and UE knows this info.

answer Oct 13, 2016 by Jaganathan
Would you please share the reference for the same ?
commented Oct 14, 2016 by Harshita
Hi,

Refer this link for more info, there you can see BPSK for some pucch formats because it is HARQ report, LTE HARQ reports uses always BPSK. except this format all other PUCCH transmission used QPSK

http://www.rfwireless-world.com/Terminology/LTE-PUCCH-Physical-Uplink-Control-Channel.html
commented Oct 14, 2016 by Jaganathan
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