Overall PCC logical architecture (non-roaming) - 3GPP TS 23.203

Subscription Profile Repository (SPR) & HSS relationship

While reading the 3GPP TS 23.203 Specifications to Undestand PCC,It looks like the only objective of SPR is to manage the QoS based on PDN through which the dedicated EPS Bearer establishment is being attempted. Also couple of doubts arising on the "SPR" functionality.

# What is the relationship between SPR & HSS ?
    No relationship between SPR & HSS as same as PCRF.
# Is it a standalone or integrated with HSS/PCRF ?
    Can be stand alone or Intergarted with PCRF format.
# How the subscriber QoS data in SPR is administrated , similar like HSS Node or combined ?

 Still an open question and looking for the answer....


In case of NSN, the functionality is built in OneNDS and can operate along-with LTE-HSS & IMS-HSS mode depending upon the traffic.
In case of E///, SPR functionality is part of SAPC-Service Aware Policy Controller






CISCO is providing the functionality as part of their ASR5000

References :-

http://www.nokiasiemensnetworks.com/portfolio/products/convergence-ims/cms-8200-home-subscriber-server-for-lte-and-ims

http://www.ericsson.com/si/res/thecompany/docs/publications/ericsson_review/2010/sapc.pdf

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