7. QoS Provisioning

Dr. David Soldani(david.soldani@nokia.com, tel. +358.50.3633527)S-38.3215 Special Course on Networking Technology for Ph.D. students at TKK

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Outline

Radio, core and transport QoS provisioningService and mobile QoS provisioningQoS provisioning tools

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Business Management Systems

Service Management Systems

Network Management Systems

Element Management Systems

Managing technologiesManaging networks

Managing servicestransparently

Managing elements

Incr

ease

d co

mpl

exity

Incr

ease

d bu

sine

ss o

ppor

tuni

ty

Managing ProfitBusiness Management Systems

Service Management Systems

Network Management Systems

Element Management Systems

Managing technologiesManaging networks

Managing servicestransparently

Managing elements

Incr

ease

d co

mpl

exity

Incr

ease

d bu

sine

ss o

ppor

tuni

ty

Managing Profit

TMN model for management hierarchy

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Possible interfaces:1) Between Network Elements (NE) and Element Manager (EM) of a single PLMN organisation2) Between EM and Network Manager (NM) of a single PLMN organisation3) Between NM and Enterprise Systems (ES) of a single PLMN organisation4) Between NMSs of a single PLMN organisation5) Between ES and NM of different PLMN organisations6) Between NEs

Organization BOrganization A

Enterprise Systems

EMOpe

ratio

ns S

yste

ms

NMNM

NENEEM

EM

NENE

4

1 1 1

2

2 2 2 2

5

5

6

EM

NE

1

3 3

Itf-N

TMF management hierarchy

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BSIu-PS GiUu GnUE RNC/BSC SGSN GGSN

(PEP)

HLRHLR

IP QoS

DLL CoS

Radio QoS

IP QoS

IP QoS

IP QoS

DLL CoS

CN QoSRadio QoS CN QoS

IP QoS

DLL CoS

IP QoS

DLL CoS

Radio QoS

IP QoS

DLL CoSDLL CoS

Radio QoS

IP QoS IP QoS IP QoS

7652 3 4

81

91011121314

IMS

Network Element Layer

Element Management Layer

PDF(“Authorised QoS” for the bearer)

GoAF

(SDP QoS Requirements)

AF Client

NML QoS Provisioning = Policy Repository

EML QoS Provisioning

Itf-Po

Itf-N

To other domains

Iub

DLL CoS DLL CoS

QoS mechanisms and management

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Radio, core and transportProvisioning of differentiation mechanisms

Radio QoS functions (UE, URAN/GERAN, SGSN)CN QoS functions (SGSN, GGSN)Policy Decision Function (IMS)IP QoS functionsData link layer functions

Provisioning of QoS mapping functionsService applications – 3GPP QoS parameters3GPP QoS parameters – IP QoS parameters (includes Edge function)IP QoS parameters – Class of service parameters

(The mapping of ‘Authorized QoS’ onto UMTS QoS is specified in 3GPP)

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Classifier

Priority Schedule

Algorithm Drop Action

AlwaysDrop Action

CountAction Queue

Meter

Other classes

EF

conforming

non-conforming

Example of DiffServ EF policy

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Prio

rity

MMS BrowsingVideo

streaming PoCCorporate

VPN

Other Application

Servers

FW/BGGGSN

BSC/RNC

2G/3GSGSN

Operator Application

Servers

Internet

Bearer 0 (non-guaranteed bit rate, priority 10, TC = Background, ARP = 3)

Bearer 1 (non-guaranteed bit rate, priority 9, TC = Interactive, ARP = 3)

Bearer 2 (non-guaranteed bit rate, priority 8, TC = Interactive, ARP = 2)

Bearer 3 (non-guaranteed bit rate, priority 7, TC = Interactive, ARP = 1)

Bearer 4 (guaranteed bit rate, priority 6 , TC = Streaming , ARP = 3 )

Bearer 5 (guaranteed bit rate, priority 5 , TC = Streaming , ARP = 2 )

Bearer 6 (guaranteed bit rate, priority 4 , TC = Streaming , ARP = 1 )

Bearer 7 (guaranteed bit rate, priority 3, TC = Conversational, ARP = 3)

Bearer 8 (guaranteed bit rate, priority 2, TC = Conversational, ARP = 2)Bearer 9 (guaranteed bit rate, priority 1, TC = Conversational, ARP = 1)

IMS

ContentSharing

Instant Messaging Presence

Video Call Gaming

Service QoS provisioning

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Priority ‘pipe’ definition

Subset of QoS attributes that allow an adequate number of priority ‘pipes’

UMTS traffic class (TC)Traffic handling priority (THP)Allocation/retention priority (ARP)Maximum bit rateGuaranteed bit rate

(Management concept!)

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Service provisioning in (E)GPRS/WCDMA

QoS differentiation can be providedby placing applications with delay-critical QoS requirements behind different APNs and setting the different QoS parameters per subscriber and APN from the HLR; orfor QoS-aware applications, by terminal clients activating parallel primary or secondary PDP contexts (with different QoS parameters) using the same APN

(According to 3GPP R99, bit rate guarantees are possible only for QoS-aware clients and terminals.)

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Mobile terminal QoS provisioning

Mechanisms and protocols that make an application on a mobile device aware of which APN and hence associated QoS to use and, for an application on QoS-aware devices, what QoS to ask for

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QoS provisioning tools

Configuration managementPolicy based QoS management

Policy management toolPolicy decision point (PDP) or policy consumerPolicy enforcement point (PEP)

Policy = rule with conditions and actionsService configuration

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Service creation and deployment

Centralized service modeling,creation and deployment

Centralized Access Pointprovisioning

Network and Service Assurance

Network Monitoring

Reporting

Service Probing

Service Monitoring

Device Management

Device detection

Remote configuration of handsets

Subscription Management

Service Activation

End-user Self-service

MobileServices

Example of Nokia solution for IMS

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ReferencesD. Soldani, M. Li and R. Cuny (eds.), QoS and QoE Management in UMTS Cellular Systems, John Wiley and Sons, June, 2006, 460 pp.

http://eu.wiley.com/WileyCDA/WileyTitle/productCd-0470016396.htmlhttp://www.connecting.nokia.com/NOKIA/nns.nsf/a/78786C61AB5A7C5AC225718F0026BAA3(Contact Mr. Geoff Farrell @ Wiley gfarrell@wiley.co.uk )

See also: http://lib.tkk.fi/Diss/2005/isbn9512278340/