© Copyright 2010 GISFI. All Rights Reserved. QoS SIG Presentation QoE Measurements In A SeON Framework Dr. Parag Pruthi NIKSUN Dr. Ashutosh Dutta NIKSUN Date: December 14, 2010
© Copyright 2010 GISFI. All Rights Reserved.
QoS SIG Presentation QoE Measurements In A SeON Framework
Dr. Parag Pruthi NIKSUN Dr. Ashutosh Dutta NIKSUN
Date: December 14, 2010
QoE => Perceived Quality of Service Network Metrics
Bit rate, delay, jitter, packet loss rate Power consumption
Application Metrics Call setup delay Failed calls, dropped calls, retransmission MOS (Mean Opinion Score)
Several standards groups … ITU-T SG12 ITU X.902 (IP Telephony) IETF – IPPM, DIFFSERV 3GPP – 3GPP TS 32.409 (IMS performance)
QoE Metrics
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QoE Metrics
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What is Frequency of Measurement?
Duration of Flow?
Minutes?
Seconds?
Sub-seconds?
Per-packet?
QoE Metrics – Time Effect
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QoE Metrics
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Require Multi-timescale
Measurements
QoE Metrics
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In A SeON Framework Such Timescale Shall Be Specifiable
& Negotiable
Details To Be Investigated By Working Group
QoE Metrics
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What To Measure?
Which Layer?
Which Application?
Which User?
Hop-by-hop or End-to-end?
Etc?
QoS is needed at multiple layers
IP CAN Caller (UE1)
diameter
SIP
GETS Call
HSS
GETS-Application
Server
P-CSCF
I-CSCF
S-CSCF
PCRF PCRF
P-CSCF
S-CSCF
Invite OK ACK
Called (UE2)
Managed IP���(Multi-Provider Network)
DNS/ENUM
DNS
RTP
L3 priority-based QoS
Wireless Access UMTS EvDO
WiMAX LTE
Satellite
Wireline Access Cable DSL Fiber
Ethernet
Wireline Access Cable DSL Fiber
Ethernet
Wireless Access UMTS EvDO
WiMAX LTE
Satellite
IMS
RAN
GW
GW
RAN
RAN IP CAN
9
SIP RPH Functions
Application-layer priority Queuing
L2 Priority –based QoS
Copyright © 2007 Telcordia Technologies. All Rights Reserved.
9
QoE Metrics
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IP Layer
UDP Layer
QoE Metrics
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Application HTTP
Application SSH
QoE Metrics
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User 1
User 2
QoE Metrics
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All Traffic Except Facebook
Facebook Only
QoE Metrics
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Require Multi-Layer Measurements
QoE Metrics
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Require DPI for Application
Classification
QoE Metrics
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In A SeON Framework Such Layer Shall Be Specifiable &
Negotiable
Details To Be Investigated By Working Group
Backbone
AdministrativeDomain B
L2 PoA
Corresponding Host
128.59.10.7
IPch
207.3.232.10
210.5.240.10
128.59.11.8
N2 N1 N1
N2
N1- Network 1 (802.11) N2- Network 2 ( CDMA/GPRS)
Configuration Agent
L3 PoA 207.3.232.10
Mobile Host
Authentication Agent
Authorization Agent
Registration Agent
Registration Agent
Administrative Domain A
Configuration Agent
Authorization Agent
Signaling Proxy
Authentication Agent
Signaling Proxy
Layer 3 PoA
L2 PoA Layer 2 PoA
Layer 2 PoA
L3 PoA
Experiencing QoS due to mobility in Campus net
128.59.9.6
L3 PoA
A
B C
D
900 ms media interruption
802.11 802.11
h/o delay 900 ms
802.11 802.11
4 Seconds media interruption h/o delay 4 s 18 Seconds media interruption h/o delay
18 s 22
Handover Event
Network discovery &
selection
Network attachment
Configuration Security association
Binding update
Media reroute
Channel discovery
L2 association
Router solicitation
Domain advertisement
Identifier acquisition
Duplicate Address
Detection
Address Resolution
Authentication (L2 and L3)
Key derivation
Identifier update
Identifier mapping
Binding cache
Tunneling
Buffering
Forwarding
Bi-casting/ Multicasting
Server discovery
Identifier Verification
Subnet discovery
P1 P2 P3 P4 P5 P6
P11
P13
P12
P21
P22
P23
P31
P32
P33 P41
P42 P51
P52
P53
P54
P61 P62
P63
P64
Where is the delay during handover process?
23
QoE Metrics
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Important to Specify Measurement Boundaries And Type of
Measurements For Abstraction From Implementation
What If Devices Are Virtual?
QoE Metrics
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Require Measurements
Between Elements
QoE Metrics
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In A SeON Framework Such (Logical) Measurements Shall Be Specifiable & Negotiable
Details To Be Investigated By Working Group
Cross-layer feedback helps to achieve QoE
Application (Audio, Video, Data)
Codecs (H.261) SAP SIP
RTP RTCP
H.323
TCP UDP
SCTP
SDP
MIP MIPv6 ICMP IGMP
PPP AAL 3/4
CDMA/GPRS/LTE 802.3 802.11
CSMA/CA CSMA/CD
SONET TX power Modulation
BER
SNR, switching LINK status
Routing Handoff
TCP Retransmission,
RTCP Feedback
Re-negotiate Bw, codec
Adaptive Application User Needs, Requirement
CIP
User
AAL3/4
RIP OSPF
Feedback-based service oriented architecture
IP CAN Caller (UE1)
diameter
SIP
GETS Call
HSS
GETS-Application
Server
P-CSCF
I-CSCF
S-CSCF
PCRF PCRF
P-CSCF
S-CSCF Invite OK
ACK
Called (UE2)
Managed IP���(Multi-Provider Network)
DNS/ENUM
DNS
RTP
Layer 3 control
Wireless Access UMTS EvDO
WiMAX LTE
Satellite
Wireline Access Cable DSL Fiber
Ethernet
Wireline Access Cable DSL Fiber
Ethernet
Wireless Access UMTS EvDO
WiMAX LTE
Satellite
IMS
RAN
GW
GW
RAN
RAN IP CAN
32
IMS-layer control
32
Layer 2 control
Performance Monitor
Multi-layer SON
Controller
Network Feedback
QoE Metrics
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Per flow Measurements (IntServ)
Aggregation Across Domains
Per flow guarantees
End-to-end
Scalability can be difficult? Should we investigate?
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QoS (SIG) deliverables - December
Define several use case scenarios for communication in rural India Focus QoS metrics for a specific set of applications
Survey available techniques and framework being discussed in different SDOs
Map the appropriate techniques and protocols to those use case scenarios
Draft Best Current Practices for QoS Requirement for Rural India
Rural India Specific
Slide 35 © GISFI
Still Needs Investigation