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

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-3

GPP networks

e.g., 3GPP QOSM

QNI

QNR

Objectives

Main objectives of this document:– Describe a 3GPP QOSM based on 3GPP QoS cla

sses 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 QS

PEC 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?