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How PDCP differentiate between NAS message and RRC message?

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How PDCP differentiate between NAS message and RRC message

Case 1: if its on same bearer
Case 2: If it is on different bearer.

posted Jun 3, 2014 by anonymous

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1 Answer

+1 vote

I think it does not.

And it does not need to do it as all signalling messages will anyways for to RRC. PDCP only differentiates between signalling and data based on the Radio bearer type.

In NAS , the distinction between EMM and ESM is done based on the protocol discriminator field in the beginning of the PDU.

answer Jun 3, 2014 by Shyam Purkayastha
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