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Why RACH is terminated in MAC?

+2 votes
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Why there is no mapping for RACH transport channel to any logical channel? Why RACH is terminated in MAC?

posted Aug 26, 2013 by anonymous

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1 Answer

+1 vote

RACH doesn't actual carry a logical (or transport) channel. It's purely a physical signal (a preamble) used to indicate to the eNodeB that a UE is attempting to access the system. Once the UE receives an access acknowledgement from the eNodeB (and a corresponding uplink grant), then it will transmit its normal logical/transport/physical channel.

answer Aug 27, 2013 by Salil Agrawal
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