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									3GPP-3GPP2 Workshop                                      CIMS-080019
Puerto Vallarta, MEXICO, 24th – 25th January 2008


Source:          Motorola

Title:           Comparison of 3GPP2 SBBC and 3GPP PCC

Agenda item:     3

Document for:    DISCUSSION
Comparison of 3GPP2
SBBC and 3GPP PCC
Lew Milton
Lewis.Milton@motorola.com
+1 847 632 4393
3GPP2 SBBC Architecture (X.S0013-012-B)
                     Application Function (AF)
                          (e.g., P-CSCF)

                                  Tx

                               Home
              Policy & Charging Rules Function (PCRF)
               Charging Rules       Policy Decision
                 Function                 Point
                   (CRF)                 (PDP)
                                                           Home Network
                                   Ty

                            Visited PCRF                   Visited Network

                         CRF            PDP
                         Proxy          Proxy

                                       Ty

                        Access Gateway (AGW)

                 Traffic Plane               Policy
                   Function            Enforcement Point
                    (TPF)                    (PEP)
3GPP PCC Release 7 Architecture (TS 23.203
v8.0.0)
                                    Subscription Profile               AF
                                       Repository
                                          (SPR)

                                                                  Rx



                                                     Sp    Policy and Charging
                                                             Rules Function
                                                                 (PCRF)
         Online Charging System (OCS)

         CAMEL         Service Data Flow
          SCP                Based
                        Credit Control                        Gx



                                                Gy                 PCEF


                                                                  GW

                                                             Gz

                                                              Offline
                                                             Charging
                                                              System
                                                             (OFCS)
3GPP Release 8 TS 23.401 v8.0.0
Non-roaming Architecture


                              UTRAN

                                          SGSN
                              GERAN                        HSS
                                                S3
                         S1-MME                                  S6a     S12
                                          MME
                                                                  S4                     PCRF

                                                     S11                       S7                  Rx+
                                          S10
       LTE - Uu ”
                                                                  Serving S5    PDN        SGi
                                                                                                 Operator’s IP Services
  UE                E-UTRAN                                       Gateway      Gateway            (e.g. IMS, PSS etc.)
                                  S1 -U
3GPP Release 8 TS 23.401 v8.0.0 Roaming
Architecture

                                                               HSS                   PCRF

                                                                               S7               Rx+
                                                        S6a
                                                                            PDN       SGi       Operator’s IP
                                                                           Gateway                 Services
                                                                                            (e.g. IMS, PSS etc.)

     HPLMN



     VPLMN
                         UTRAN                                       S8a

                                    SGSN
                         GERAN
                                                               S12
                                           S3
                                 S1-MME                   S4
                                                MME



                                                        S11
                                                S10
          “ LTE - Uu ”                                                     Serving
                                                                           Gateway
     UE                   E-UTRAN
                                                 S1-U
3GPP Release 8 TS 23.402
v8.0.0 Non-roaming Architecture
                                HSS
                                                                                    Wx*
                     S6a
                                                     PCRF
                                 S7c                                  Rx+
                                             S7
                                                                             Operator's IP
                                                                SGi
                                                                               Services
        3GPP    Serving            PDN                                      (e.g. IMS, PSS
       Access   Gateway           Gateway                                         etc.)
                           S5
                                       S2b                             S6c
                                                          S7b
                                                                      Wm*
                                S2a                ePDG                               3GPP AAA
                                                                                        Server
  HPLMN                                                   Wn*

  Non-3GPP                                   S7a
  Networks                                          Wu*
                                   Trusted                  Untrusted
                                 Non-3GPP IP               Non-3GPP IP
                                   Access                    Access                Wa*    Ta*
                                                            UE
3GPP Release 8 TS 23.402
v8.0.0 Roaming Architecture
                                            HSS
                                                                                       Wx*
                                                                      Rx+
                                                          hPCRF                Operator's IP
                             S6a                     S7                          Services
                                                                              (e.g. IMS, PSS
                                               PDN                    SGi
                                                                                    etc.)       3GPP AAA
                                              Gateway                                             Server
      HPLMN
                                                                        S6c

                                                                 S9
                                               S2b                                             Wd*
                                    S8a/b
                                                          vPCRF


       3GPP      Serving
      Access     Gateway           S7c
                                                          S7b
                                                                                               3GPP AAA
                                                                                                 Proxy
                                                                                       Wm*
                                   S2a
                                                           ePDG
      VPLMN

      Non-
      Networks                               S7a                Wn*

                             Trusted                               Untrusted
                           Non -3GPP IP                           Non -3GPP IP
                             Access                                 Access              Wa*          Ta*
3GPP2 Flows vs. 3GPP Bearers
•   3GPP2 Flows (HRPD, UMB) - MMD Rev. B
     – All flows are UE initiated for HRPD, and UMB supports both UE and NW initiated flows
     – Flow binding done at the Access Gateway (AGW)
     – Tx sessions to Ty session are one-to-many
     – TFTs sent by UE to AGW; AGW validates QoS via Ty with PCRF
     – AGW does per flow charging
•   3GPP Bearers (GPRS, UMTS) – Rel. 7
     – Both UE and NW initiated bearers supported
          • Binding done at the PCEF for NW initiated bearers
          • Binding done at the PCRF for UE initiated bearers
     – Rx sessions to Gx sessions are one-to-one
     – GGSN sends TFTs to PCRF
•   3GPP Bearers (EPS) – Rel. 8
     – Both UE initiated and Network initiated bearers supported
     – TS 23.401 has bearer binding in P-GW (none at S-GW)
          • P-GW validates TFTs with PCRF via S7
     – TS 23.402 has bearer binding in both the S-GW & P-GW
          • Both S-GW and P-GW validate TFTs with PCRF via S7c/S7
     – S-GW does aggregate charging for same QoS bearer, or per flow charging
     – P-GW does per flow charging
3GPP/3GPP2 Policy Interfaces Differences

• 3GPP2 MMD SBBC Rev. B Tx vs. 3GPP PCC Rel. 7 Rx
   – Tx uses the same Application ID as Rx
   – Tx has optional AVP differences with Rx
• 3GPP2 MMD SBBC Rev. Ty vs. 3GPP PCC Rel. 7 Gx
   – Ty has several detailed AVP differences
   – Ty includes policy peering support
Recommendations
• 3GPP PCC interfaces S7, S7x and S9 should be access
  independent
   – 3GPP S7, S7a and S7c should support the policy, QoS
     control and charging functionality of 3GPP2 Ty
   – 3GPP S9 should support the policy peering functionality of
     3GPP2 Ty
   – 3GPP Rx+ should support the functionality of 3GPP2 Tx
• 3GPP2 access specific information should be added as
  cdma2000 access specific Release 8 annex(es).
• 3GPP2 will take action to bring CRs into 3GPP SA2 and
  CT3

								
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