China Telecomm Peirong Xie ZTE Corporation Rajesh Bhalla Huawei Jixing Liu Page 1 SubscriberQoSProfile Configuration Procedure Related Operator Requirements July 25, 2011

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Abstract This contribution presents the following TWO operator requirements: (1) With Pi*3GPP2 Diameter Application the 3GPP2 AAA shall have the capability to support either or both, the HSGW Relocation and the SubscriberQoSProfile Configuration Procedures (2) The operator shall have the capability to configure at the eAN/ePCF, the SubscriberQoS Profile parameters that can be derived from the 3GPP EPS related information received at the HSGW from the HSS/PCRF during Authorization/Bearer Activation Procedures The above stated operator requirements be supported in X.S0057-B release of specifications Page 3

Background – Requirement #1 X.S0057-A specifies Pi*3GPP2 Diameter Application as an optional capability at the HSGW and the 3GPP2 AAA Pi*3GPP2 Diameter Application couples two eHRPD related features: 3GPP2 AAA assisted HSGW Relocation Procedure 3GPP2 AAA assisted SubscriberQoSProfile Configuration Procedure HSGW advertises support for Pi*3GPP2 Diameter Application if it supports HSGW Relocation OR SubscriberQoSProfile Configuration Procedure 3GPP2 AAA advertises support for Pi*3GPP2 Diameter Application if it supports HSGW Relocation AND SubscriberQoSProfile Configuration Procedures The HSGW and the 3GPP2 AAA use Supported-Features AVP to negotiate peer’s support for SubscriberQoSProifle Configuration Procedure No such capability exchange is used to negotiate peer’s support for HSGW Relocation Procedure Page 4

Operator Requirements - #1 If Pi*3GPP2 Diameter Application is advertized: The Diameter Capability Exchange procedure specified in X.S0057-A effectively mandates the 3GPP2 AAA to support both, the HSGW Relocation and SubcriberQoSProfile Configuration Procedures This does not meet operator requirements to have the capability to support either or both of the above mentioned procedures at the 3GPP2 AAA Pi*3GPP2 Diameter Capability exchange procedure needs to be enhanced to allow the operator to have such a capability It is recommended that such enhancements be adopted in X.S0057-B release specifications Page 5

Background – Requirement #2 In case the 3GPP2 AAA does not support SubscriberQoSProfile Configuration procedure, the HSGW will not receive 3GPP2 Subscriber QoS Profile parameters (specified in Annex-D, X.S0057-A) from the 3GPP2 AAA It is, however, possible to derive some 3GPP2 Subscriber QoS Profile parameters from the 3GPP EPS related information received at the HSGW from the HSS during Authentication and Authorization procedures Maximum Authorized Aggregate Bandwidth for Best-Effort Traffic parameter can be derived from the UE-AMBR parameter Inter-User Priority for Best-Effort Traffic parameter can be derived from the QCI in Subscribed QoS-Profile parameter in APN-Configuration associated with the default bearer for the APN Page 6

Operator Requirements - # 2 If 3GPP2 AAA does not support SubscriberQoSProfile Configuration Procedure, the HSGW shall have the capability to derive the following 3GPP2 Subscriber QoS Profile parameters from the 3GPP EPS related information received at the HSGW from the HSS during Authentication and Authorization procedure and forward such information to the eAN/ePCF: Inter-User Priority for Best-Effort Traffic parameter from the QCI in Subscribed QoS-Profile parameter in APN-Configuration associated with the default bearer for the APN Maximum Authorized Aggregate Bandwidth for Best-Effort Traffic parameter from the UE-AMBR parameter It is recommended that such enhancements be adopted in X.S0057-B release specifications Page 7

More on Operator Requirements - # 2 Inter-User Priority for Best-Effort Traffic parameter derived from the QCI in the Subscribed QoS-Profile parameter in APN- Configuration associated with the default bearer for the APN Maximum Authorized Aggregate Bandwidth for Best-Effort Traffic parameter derived from the UE-AMBR parameter HSGW then forwards the above stated parameters to the eAN/ePCF via A11-Session Update message In case there is a multiple set of Subscriber QoS Profile parameters at the HSGW, the HSGW has the capability to combine such multiple parameters into a single set of Subscriber QoS Profile parameter as specified in Section 3.3.4, X.S specifications Page 8

Background Info on QCI Parameter QoS Class Identifier (QCI) is a scalar value which classifies a set of bearer parameters suitable for a particular class of applications The bearer parameters associated with QCI are: Packet Delay Budget Packet Delay Loss Priority Resource Type (GBR or Non-GBR) QCI is received at the HSGW in the Subscribed QoS-Profile parameter in the APN-Configuration associated with the default bearer fro the APN during Authentication and Authorization procedure Inter-User Priority for Best-Effort Traffic parameter can be derived from the Priority parameter associated with the QCI Page 9

Background Info on UE-AMBR Parameter UE-AMBR is stored as a subscription parameter in the HSS Subscribed UE-AMBR is received at the HSGW during UE Authentication and Authorization Procedure UE-AMBR limits the aggregate bit rate that can be expected to be provided across all Non-GBR bearers of a UE For E-UTRAN access, the MME sets the UE-AMBR to the sum of the APN- AMBR for all active APNs up to the value of the Subscriber UE-AMBR For eHRPD access, the following two options for setting UE-AMBR have been considered: Option 1: HSGW sets UE-AMBR to the Subscriber UE-AMBR received from the HSS Option 2: HSGW sets UE-AMBR to the sum of the APN-AMBR of all active APNs up to the value of the Subscribed UE-AMBR Page 10

More Info on UE-AMBR Parameter Based on such background information it is recommended that: HSGW sets UE-AMBR to the sum of the APN-AMBR of all active APNs up to the value of the Subscribed UE-AMBR (Option2) Maximum Authorized Aggregate Bandwidth for Best-Effort Traffic parameter be mapped from the DL data rate in the UE-AMBR parameter Account for the difference in the data rates of E-UTRAN and eHRPD access technologies while mapping the DL data rate in the 3GPP UE-AMBR parameter to the 3GPP2 Maximum Authorized Aggregate Bandwidth for Best-Effort Traffic parameter Enforcement of the APN-AMBR in the uplink is done in the UE Enforcement of the UE-AMBR in the uplink is done in the UE Page 11

Recommendations Operator Requirement # 1 be adopted for enhancements to X.S0057-B specifications With Pi*3GPP2 Diameter Application the 3GPP2 AAA shall have the capability to support either or both, the HSGW Relocation and the SubscriberQoSProfile Configuration Procedures Operator Requirement # 2 be adopted for enhancements to X.S0057-B specifications The operator shall have the capability to configure at the eAN/ePCF, the SubscriberQoS Profile parameters that can be derived from the 3GPP EPS related information received at the HSGW from the HSS during Authorization and Authorization Procedures Page 12

Thanks Page 13