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Why do we need an RACH in RN in LTE?

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Why do we need an RACH in RN in LTE?
posted Sep 4, 2018 by Jaganathan

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1 Answer

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Relay Node in LTE network acts as an eNodeB to UE and acts as an UE towards Donor eNodeB (DeNB). DeNB is invisible for UEs connecting through Relay node. Since RN is treated as eNodeB by an UE, it will perform RACH to access the cell.

answer Sep 5, 2018 by Harshita
Hi Harshitha,
Thanks for the answer. But In MAC specification they have mentioned RN will perform rach in LTE? In your answer i understood Why UE perform RACH towards RN. But Why RN perform RACH?
commented Sep 5, 2018 by Jaganathan
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