How "FullConfig" IE in RRC Connection reconfiguration affects during handover?

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

When source eNB sends full config ie in rrc reconfiguration with mobility parameters then source eNB will not perform data forwarding to target eNB . so source eNB will not send pdcp SN status to target eNB and it will not forward any pkt to target enb. Then target eNB can not retransmit DL data to ue.

UE also will start new pdcp SN with target eNB and will not perform retransmission for UL data during this scenario.

For more detail pls read 36.331 section 5.3.5.8 Radio Configuration involving full configuration option