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LTE: Does the eNodeB change transmission mode per TTI for an user or it can be semi-static?

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On what parameter basis, eNodeB changes its current transmission mode to different transmission mode for an UE ?
What parameters are considered to take decision on transmission mode ? Does the eNodeB inform to UE about the selected TM ?

posted Sep 28, 2016 by Rupam

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1 Answer

+3 votes

Based on RI indicator eNodB will take decision.
i.e if eNodB in tm4 mode and using spatial multiplexing and current TTI UE reported RI=1 then it will change transmitting mode spatial multiplexing to transmit diversity.

answer Sep 28, 2016 by Raju Dhedhi