6 Routing
29.2013GPPRelease 17Representational State Transfer (REST) reference point between Application Function (AF) and Protocol Converter (PC)TS
6.1 PC located in the PLMN but outside of the PCRF realm
The AF may have following parameters: UE IP address (i.e. IPv4 or IPv6 address), PDN information, user identity and domain Identity.
The AF may use above parameters to construct the HTTP request URL to the protocol converter.
The above available parameters shall also be included in the AF session establishment requests to the protocol converter.
For the routing between the protocol converter and PCRF, if the PC can extract the realm information from the user identification and/or other information from the AF, the PC can send the Diameter message to the correct PCRF realm. Otherwise, if the PC can’t extract the realm information from the user identification and/or other information from the AF, the PC may use pre-configured information to find the PCRF realm. The parameters provided by the PC may include the UE’s IPv4 address, the UE’s IPv6 address, PDN information, user identity and domain identity.
NOTE: The DRA procedure for the PC to find the PCRF is defined in subclause 7.3.2 of 3GPP TS 29.213 [3].
6.2 PC located in the PCRF realm
The AF may have following parameters: UE IP address (i.e. IPv4 or IPv6 address), PDN information, user identity and domain Identity.
The AF may use above parameters to construct the HTTP request URL to the protocol converter.
The above available parameters shall also be included in the AF session establishment requests to the protocol converter.
For the routing between the protocol converter and PCRF, the protocol converter shall provide the PCRF or the DRA of the PCRF realm with the parameters translated from the HTTP request. The parameters provided by the PC may include the UE’s IPv4 address, the UE’s IPv6 address, PDN information, user identity and domain identity.
NOTE: The DRA procedure for the PC to find the PCRF is defined in subclause 7.3.2 of 3GPP TS 29.213 [3].