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QoS Model for Networks Using 3GPP QoS Classes (draft-jeong-nsis-3gpp-qosm-01). Seong-Ho Jeong, Sung-Hyuck Lee, Georgios Karagiannis 63rd IETF Meeting. Outline. Motivation and Objectives Issues Identified 3GPP QoS Classes/Attributes and QoS Mappings Additional Optional QSPEC Parameters
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QoS Model for Networks Using 3GPP QoS Classes (draft-jeong-nsis-3gpp-qosm-01) Seong-Ho Jeong, Sung-Hyuck Lee, Georgios Karagiannis 63rd IETF Meeting
Outline • Motivation and Objectives • Issues Identified • 3GPP QoS Classes/Attributes and QoS Mappings • Additional Optional QSPEC Parameters • UE-Initiated NSIS Signaling • GGSN-Initiated NSIS Signaling • Future Issues • Next Steps
QNR e.g., 3GPP QOSM QNI Motivation • A QOSM provides a specific set of parameters to be carried in the QSPEC • Examples of QOSMs: RMD QOSM, Y.1541 QOSM, XG QOSM, etc. • Need for QoS interworking between 3GPP and non-3GPP networks
Objectives • Main objectives of this document: • Describe a 3GPP QOSM based on 3GPP QoS classes and bearer service attributes • Propose additional optional QSPEC parameters
Issues Identified • QoS mappings between 3GPP and other QoS classes • Additional optional QSPEC parameters for 3GPP QOSM • UE-initiated NSIS signaling procedure • GGSN-initiated NSIS signaling procedure
UMTS QoS Classes (TS 23.107) • 3GPP TS 23.107 • “QoS Concept and Architecture," • Provides the framework for Quality of Service within UMTS and specifies four QoS classes • UTMS QoS Classes • Conversational class • Streaming class • Interactive class • Background class • QoS Mappings • QoS Mapping between TS 23.107 and Y.1541 • QoS Mapping between TS 23.107 and DiffServ/RMD
UMTS QoS Attributes • UMTS traffic class • Maximum bit rate • Guaranteed bit rate • Delivery order • Maximum SDU size • SDU format information • SDU error ratio • Residual bit error ratio • Delivery of erroneous SDUs • Transfer delay • Traffic handling priority • Allocation/Retention priority • Source statistics descriptor • Signaling indication
Additional Optional QSPEC Parameters • 3GPP QoS Classes • Delivery of Erroneous SDU (DES) • Source Statistics Descriptor (SSD) • Signaling Indication (SI) • SDU Format Information (SFI) • Transfer Delay (TD) • Packet Loss Ratio (PLR) • Traffic Handling Priority (THP)
UE-initiated NSIS Signaling • QoS-NSLP at the UE (QNI) sends a QoS-NSLP RESERVE (in case of sender-initiated approach) message • 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 QoS model as well as generic QSPEC parameters for the application flow
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 (in case of sender-initiated approach) message which contains the Initiator QSPEC to the next hop in the external IP network • QoS mapping between the 3GPP and other QoS Classes (e.g., DiffServ or Y.1541) should be performed at the GGSN
Future Issues • NSIS signaling within the IP based transport part of UMTS • NSIS signaling between UMTS and WiMAX/WiBro via an IP-based backbone • NSIS signaling between UMTS and WLAN via an IP-based backbone
Next Steps • Should it be a WG item? • Propose to make this become an NSIS WG document • Progress draft as an Informational RFC with feedback and review by the NSIS WG?