Transcript PPT Version

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
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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
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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 non3GPP networks
QNR
QNI
e.g., 3GPP QOSM
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
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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)
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3GPP TS 23.107
– “QoS Concept and Architecture,"
– Provides the framework for Quality of Service within UMTS
and specifies four QoS classes
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UTMS QoS Classes
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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
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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
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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
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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
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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 QoSNSLP 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
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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 IPbased backbone
Next Steps
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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?