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What is the role of PCRF in LTE/UMTS.

+3 votes

Getting confused about PCRF why it is required as it looks that all functionality can be done at PGW, can someone provide more details why PCRF.

posted Dec 9, 2013 by anonymous

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2 Answers

+2 votes

PCRF is like a server [not exactly] and it get info from SPR [service profile registry] and share it to PGW. So it just control PCC via PGW. Depend on the message that received from PCRF the PGW will apply those QOS/PCC on particular user.

answer Dec 9, 2013 by sivanraj
0 votes

Doubt is valid, but having the functionality of policies in PGW/GGSN will create a managing mess as we need to have the same in all PGW/GGSN so we move the policy function to some external node...

answer Dec 9, 2013 by Salil Agrawal
Similar Questions
+2 votes

Why PCRF is separately in LTE Core network, can’t we provision the whole function and features in P-GW itself, what is the exact need of PCRF rather than PCC?

+2 votes

This regarding the sessions b/w the PGW and PCRF.

Lets say we have 2 default bearers(DEF1, ad DEF2) for UE1, and 2 dediicated bearers for each of these Default bearers. And for UE2 assume 2 def bearers, DEF3, and DEF4.

Now a CCR is sent for initial default bearer DEF1 creation for UE1. Lets say session(session1) is created for this. with CCRequest number=0.
For Ded bearer1 creation, will it use the same session Id ? and increment the CCRNumber ?
What about the UE2?

I am new to Diameter and earlier, these things were internal and didnot need diameter interface. So the questions are arising.

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