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Why we have two QCI's (i.e QCI 8,9) with equal PDB(Packet Delay Budget) and PELR(Packet Error Loss Rate)?

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Why we have two QCI's (i.e QCI 8,9) with equal PDB(Packet Delay Budget) and PELR(Packet Error Loss Rate)?
posted Mar 30, 2016 by Mallikharjuna Reddy

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+2 votes

For the same service why do we need different bearer ?can anyone explain this in-detail?

+1 vote

Hi,

In H// RAN QCI 9 and QCI 5 are always established and deactivated together for VoLTE provisioned subscribers for any Internet/data activity/inactivity. So QCI 5 attempts are almost same as QCI 9 attempts for a VoLTE subscriber. It seems to be unnecessary as we need QCI 5 only during VoLTE session. The benefit could be fast VoLTE setup if UE is already in RRC connected state due to data activity. I want to know if it is as per 3GPP standard? If yes then I would appreciate the reference document number.

Thanks.

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