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LTE-Advanced: Is it necessary primary cell and secondary cells should have same coding and modulation schemes?

+1 vote
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An UE configured for carrier aggregation, may have different radio channel conditions for primary and secondary cells.
I meant to say, primary cell may have strong signal strength at the same time UE may observed secondary cell(s) not too good.
In this case, does the same modulation and coding schemes used for primary and secondary or may use different coding and modulation schemes for different channels for the same sub frame?

posted Mar 8, 2016 by Harshita

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2 Answers

+1 vote

Spec nowhere mandates use of same modulation scheme. Pcell and Scell can have same or different modulation schemes depending on what is indicated is indicated in their corresponding DCI.

answer Mar 8, 2016 by Tariq Siddiqui
Link adaptation algorithm should determine the MCS of each cell independently of the other cell
0 votes

Its not mandatory to have same MCS/PRB on Pcell and scell. MCS/PRB scheduling for pcell and scell can be done autonomously by eNB scheduler as indicated by their respective DCI(in case of self scheduling) .

Regards
Neeraj

answer Sep 6, 2017 by anonymous
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