What is "FullConfig" IE and When it is present in RRC Connection reconfiguration message?

Question

I would like to ask the following:
1.How UE will be effected
2.How Source eNodeB will be effected
3.How about the re-transmission of PDCP(SN), PDCP (NO SN)

Thanks.

Answer 1

As per 3gpp 36.331 section 5.3.1.3
If the target eNB does not support the release of RRC protocol which the source eNB used to configure the UE, the target eNB may be unable to comprehend the UE configuration provided by the source eNB. In this case, the target eNB should use the full configuration option to reconfigure the UE for Handover and Re-establishment. Full configuration option includes an initialization of the radio configuration, which makes the procedure independent of the configuration used in the source cell with the exception that the security algorithms are continued for the RRC re-establishment.

Comments

1.When exactly it will be on
2.How UE will be effected
3.How Source eNodeB will be effected
4.How about the re-transmission of PDCP(SN), PDCP (NO SN)

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Please ask these queries in new question.

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May I know the answer for this question? Thanks