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How QCI_X(where X = 1,2,3,4,5,6,7,8,9,65,66,67,68,69,70) is selected by PCEF for CC-Request in Gx interface

+2 votes
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How PCEF decide which QCI_X(where X = 1,2,3,4,5,6,7,8,9,65,66,67,68,69,70) value need to be send to PCRF.
What is the significance of so many QOS-Class-Identifiers?
Even 3GPP 29.212 doesn't define any reason for classification between different QOS-Class-Identifiers.

posted Mar 15, 2016 by Chinmoy Padhi

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1 Answer

+2 votes

QCI comes from MME in Create Session Request and PGW just forwards the same to PCRF. The information is usually downloaded from HSS.
For eg in case of IMS APN the QCI provided is 5 and for internet APN the QCI provided is 9.
QCI is an important aspect which helps to decide what kind of treatmenet shold be given to a packet.
Check 6.1.7.2Standardized QCI characteristics sepc 23.203.

Regards,
Peeyush Sharma

answer Mar 30, 2016 by Peeyush Sharma
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