QoS Model for Networks Using 3GPP QoS Classes (draft-jeong-nsis-3gpp-qosm-02)

1. QoS Model for Networks Using 3GPP QoS Classes (draft-jeong-nsis-3gpp-qosm-02) Seong-Ho Jeong, Sung-Hyuck Lee, Georgios Karagiannis, Gert-Jan van Lieshout The 64th IETF meeting in Vancouver, Canada

2. Outline • Changes since -01 • Additional optional QSPEC parameters • UE-/GGSN-initiated NSIS signaling • NSIS Signaling within the IP-based Transport Part of UMTS/GPRS • Next Steps

3. Changes since -01 • Updated goals in Abstract and Introduction • Updated additional optional QSPEC parameters • Created a new section entitled "NSIS Signaling within the IP-based Transport Part of UMTS/GPRS" • Updated the interoperation between UMTS and external IP-based Networks

4. Goals • Define additional optional parameters for QSPEC which carries 3GPP QOSM specific information • Describe how the QSPEC information should be processed in QNEs • Describe how other NSIS QoS models, e.g., RMD-QOSM and Y.1541-QOSM, can be applied and interoperate with the 3GPP PDP context signaling • Make UMTS interoperate with other NSIS QOSMs • Make NSIS protocols applicable to UMTS and other wireless networks • Identify common QoS parameters for wireless networks such that scarce wireless resources can be used efficiently

5. Additional Optional QSPEC Parameters • The following parameters have been identified as additional optional QSPEC parameters, and formats of most of the parameters have been defined • 3GPP QoS Classes: similar to Y.1541 classes • Delivery of Erroneous SDU (DES): 2 bits • Source Statistics Descriptor (SSD): 2 bits • Signaling Indication (SI): 2bits • SDU Format Information (SFI): 32 bits • Transfer Delay (TD): 32 bits • Packet Loss Ratio (PLR): 32 bits • Traffic Handling Priority (THP): 2 bits • More optional QSPEC parameters may be defined

6. UE-initiated NSIS Signaling • QoS-NSLP at the UE (QNI) sends a QoS-NSLP RESERVE message (in case of sender-initiated approach) • The RESERVE message contains the Initiator QSPEC to the next hop in the external IP network through the GGSN. • The Initiator QSPEC specifies optional parameters specific to 3GPP QOSM as well as generic QSPEC parameters for the application flow

7. UE-initiated NSIS Signaling (cont’d) UE1(QNI) GGSN1 UE2(QNR) GGSN2 PDP Context Signaling (Primary) IP-based Network (RMD-QOSM/ Y.1541-QOSM) PDP Context Signaling (Primary) NSIS Signaling NSIS Signaling NSIS Signaling QoS Mapping QoS Mapping PDP Context Signaling (Secondary) PDP Context Signaling (Secondary)

8. GGSN-initiated NSIS Signaling • The GGSN populates the initiator QSPEC based on the PDP context to create an NSIS session • The QoS-NSLP at the GGSN (QNI) sends a QoS- NSLP RESERVE message (in case of sender-initiated approach) which contains the Initiator QSPEC to the next hop in the external IP network • QoS translation between 3GPP and other QoS Classes (e.g., DiffServ or Y.1541) should be performed at the GGSN

9. GGSN-initiated NSIS Signaling (cont’d) UE1 GGSN1(QNI) UE2 GGSN2(QNR) PDP Context Signaling (Primary) IP-based Network (RMD-QOSM/ Y.1541-QOSM) PDP Context Signaling (Primary) PDP Context Signaling (Secondary) NSIS Signaling PDP Context Signaling (Secondary) QoS Translation QoS Translation

10. NSIS Signaling within the IP-based Transport Part of UMTS/GPRS UE(MS) Node B(BS) RNC(BSC) SGSN GGSN Create PDP Context Request Activate PDP Context Request NSIS Signaling Radio Access Bearer Setup Create PDP Context Response 3GPP-QOSM NSIS Signaling NSIS Signaling Update PDP Context Procedure Activate PDP Context Accept 3GPP-QOSM 3GPP-QOSM

11. Next Steps • Refine the format of the optional QSPEC parameters for 3GPP-QOSM • Describe further NSIS Signaling within the IP-based Transport Part of UMTS/GPRS • Refine the interoperation between 3GPP and non-3GPP networks • Refine QSPEC parameters as common parameters to be used for other wireless networks • Should this be a WG item?