Traffic Management in the Carrier Cloud

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Traffic Management in the Carrier CloudTraffic Management in the Carrier Cloud

Resource allocation to enforce topological constraintsResource allocation to enforce topological constraints

Joakim RönnblomStrategic Product Manager, PS Core Networks, Huawei Technologies

Virtual Networks SIG, “Radical Future, Pragmatic Beginnings”London, 8th May 2014

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HEADLINE TEXT TO BE PLACEDWhere are my resources located?

IT Cloud Carrier Cloud

Typically in cloud scenarios, there are no requirements on the resource topology. However, in NFV scenarios

there could be situations where CPU, memory and I/O devices should be requested not only in terms of number, but also in terms of proximity. For this reason,

we need the NFVI server to expose the full topology of resources and their availability.

The idea is to describe the resource topology in such

a way that an appropriate assignment of resources can be made by the orchestrator in order to guarantee that the VNFC will achieve a predictable performance.

Draft ETSI GS NFV-PER 001 V0.0.7 (2013-10)


HEADLINE TEXT TO BE PLACEDNetwork characteristics differ!

OR

OR

OR

Congestion

Transmission

Mobility


HEADLINE TEXT TO BE PLACEDUnderstand the Requirements

Orchestration of Carrier Cloud infrastructure must support node deployment strategy to balance

SLAcostend-user QoEenergy consumption…


HEADLINE TEXT TO BE PLACED

1Distributed GW, Improving Transmission

EfficiencyBackbone

Backhaul

2G

3G 4G

WiFi

SBC/P-CSCF

PGW-VoLTE

PGW/Cache

RNCSGWPGW-SME

PGW-VPN PGW-M2MCentral

2

4

3 1 IDC2

Balance Site Capacity to reduce single

device failure risk

3 Dedicated VoLTE GW to ensure Voice

Quality and High Resilience

4 Centralized GW for HA services with SLA

EPC-GW placement: Demand differs with service type

Driving Force of GW placement

Region

Pragmatic Beginnings


HEADLINE TEXT TO BE PLACEDLocal distribution of VoLTE GW

4565

45

45

95

95

0

50

100

150

200

250

EPC-GW in Metro EPC-GW in Area Center

Delay(ms)

UE process Delay

Codec Process Delay

Average Transport Delay

Mapping between delay and voice quality(eModel IUT-T G.114)

Distributed EPC-GW Reduce 20ms delay, about 0.2 MOS

Voice quality Mouth to ear (ms)

Excellent <=200

Good <=295

Poor <=390

Backhual Backhual

…

… …

IPBB

Region A Region B

Area CenterEPC GW

EPC GWMGW MGW

Path of Local Call

Distributed GW make excellent voice (delay <200ms) Routing optimization of local voice

80％％％％ of voice call is local and most of call is between LTE and 2G/3G/PSTN in LTE initial phase.



HEADLINE TEXT TO BE PLACEDDedicated PGW for Key Service and HA

Centralized PGWCentralized

PGWSGSN

MME

Pooling

2G

3G

LTE

Centralized PGWCentralized

PGWInternet

PGW

Load Sharing

Centralized PGWM2M

PGW

ICSR

ICSR: Inter-chassis Session Recovery

Centralized PGWSGW

Centralized PGWVoLTE

PGWIMS

EPC-GW

EPC-GW

User Context

Sync

ICSR



HEADLINE TEXT TO BE PLACEDVarious Business Opportunities

Hardware Resource Pool

Virtualized Network Virtualized Network Virtualized Network Virtualized Network

Virtualized Network with Specific QoS for Specific Purpose

QoS 1 QoS 2 QoS 3 QoS 4

� � � �

Vehicle Telemetric Telemetry Remote Health Remote Education

Quick Switch Massive Connections Data Accuracy Huge Traffic



HEADLINE TEXT TO BE PLACEDI/O Capacity matters

Dataplane functions need to make use

of I/O Virtualization techniques –

Orchestrator must be able to request it

10X Performance

Netmap

/DPDK

NetQueue

VMDq/

PCIe Pass

Through/

SR-IOV

Multi-layer optimisation techniques



HEADLINE TEXT TO BE PLACEDVM Placement

DC1 DC2

VMVM VM

VM VMOrchestration

� Location� Technology� Availability



HEADLINE TEXT TO BE PLACEDDynamic VM Placement for On-Demand Capacity

MANO

MANO

MME APP ……

S/PGW ……

MANO

S/PGW

People aggregate around a previously sparse location. MANO detects the

event and automatically suggest a new deployment of S/PGW on a data

center which is closer to end users.

Radical Future


HEADLINE TEXT TO BE PLACEDLocalized service access based on mobility, Case 1

DC1 DC2

VMVM VM

VM VMOrchestration

Radical Future

DC1, London

DC2, Liverpool

Carrier’s hosted service access can ensure high availability and access bandwith for end user through most efficient path


HEADLINE TEXT TO BE PLACEDLocalized service access based on mobility, Case 2

DC1 DC2

VMVM VM

VM VMOrchestration

Radical Future

DC1, London

DC2, Liverpool

Carrier’s hosted service access can ensure high availability and access bandwith for end user through most efficient path

HA


HEADLINE TEXT TO BE PLACEDWhere are we currently?

� VNF/NS Template can specify the DC for VNF deployment.� VNF/NS Template may use “Affinity” for HA model.

� Proprietary solutions exist, which leads to multi-vendor issues.

� Dynamic network information like mobility and congestion status is not currently communicated to MANO.

� Session continuity for on-demand VM placement needs consideration.

� In ETSI NFV standard, multi-DC VNF deployment has not been

discussed.


HEADLINE TEXT TO BE PLACEDAT&T on Datacenter Site Distribution

“We're going to march to 4 600 data centers, that's how many central offices we have. That would be what allows us to take advantage of our architecture and

then the microseconds of compromise that exist between the matter and the application will be overcome by the milliseconds we avoid by having an extremely highly distributed, very fast fiber network.”

John Donovan, Senior EVP AT&T, ONS2014 Keynote


HEADLINE TEXT TO BE PLACEDCarrier site distribution of the future?

Microsoft’s Datacenter in Dublin Carrier X’s Datacenter in Salzburg

OR

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