Cognitive Radio and Network R&D Trial Environment

Cognitive Trial Environment

CORE Workshop 15.1.2013Marko PalolaVTT Technical Research Centre of Finland

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15.1.2013 Marko Palola, VTT

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CORE project 2011-2014

Develop and deploy future CR business ecosystem techniques

Develop a cognitive trial system for carrying out experiments

Make proof of concept trials and measurements

VTT, Centria, CWCNSN, EXFO Nethawk, EB, Pehutek,

PPO, Renesas, Finnish Defence Forces

TEKES Trial [email protected]

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Cognitive Radio Systems

“A radio system employing technology that allows the system to obtain knowledge of its operational and geographical environment, established policies and its internal state; to dynamically and

autonomously adjust its operational parameters and protocols according to its obtained knowledge in order to achieve predefined

objectives; and to learn from the results obtained.”

REPORT ITU-R SM.2152

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Cognitive Radio Systems

Enabler for next generation, dynamic spectrum access networks

Use or share the spectrum in an opportunistic manner

Power consumptionBest connection

Load balancing

Networkoptimisation

Networkreconfiguration

Resource sharing

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Cognitive Cycle realisation in the CORE project 1/2

Collection of network information,

user QoS, userlocation, and radio

resource data.

General approach for

decisionmaking based

on data

Resource loadbalansing

adjustments.

Internal stateis specified bythe collected

data

Generalizedimplementation

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Cognitive Cycle realisation in the CORE project 2/2Obtaining knowledge & Adjustments

CORE Client toolsCORE Cognitive APICORE Cognitive Manager

Decision makingData cache & historyCognitive EngineDecision algorithm

Trial AccessCORE Trial Environment UserInterface

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Trialing with CORE

CORE trial environment allows integrating an external system undercognitive engine control.

Requires installing/development of Core Client tools for informationcollection and making adjustmentsDuring trial Trial customer is able to

make decision rules based on collected data that change the behaviour of the external systemUse and measure the external system

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Obtaining Knowledge & Making changes

Core Clients interface the externalsystem, which may consist of

Computer, terminal, sensorServer, router, base station, switchSimulator, measurement or monitoringtoolDatabase, file, socketService platformAny equipment that can be monitored

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Core Clients monitor / receive information fromexternal system

Produce data for decision making using CORE data format

Data delivery as soon as information is changedPeriodical status (refresh current state)

Core Clients are information collectors

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CORE data formatCORE uses the following data presentation format

component.parameter = value;

Examples:

basestation.load = high;basestation.load=88;network.available=wlan1;network.current=centria_lte;

Names and values can be freely selected.

Cognitive engine follows values and changes related to user, terminal, network, server, service, and basestation components.

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Event message

Core clients deliver collected information to their associated CE for decisionmaking using an event message specified by Cognitive API.

Who/wherecollected

information

Related to what?

How long data is usable? Data

component.parameter = value;

References: 4Ward, Univerself, Future Internet, Mercone…

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Core clients implement routine that makechanges to external system.

Core clients inform the cognitive engine whatthey can do

A core client’s capabilityactivated by the cognitive engine

CORE project have developed capabilities for Handover capability

Offloading, load balansingWARP radio network channel management

channel occupancy information

Core Clients configure the external system

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Decision making in CORE

Cognitive engineRule-based decision making (if .. then ..)Decision rules

Decisions are based on Data on incoming event messageEarlier received data (cache)

Decision rules can be defined by the Trial customer.

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Decision algorithm

A bunch of decision rules, each rule hasRequirement(s) Capability action

Requirement is tested each time new data event arrives on the decision engine

Capability action is defined by a core client

If requirements are all true the capability action is activated ->an event is sent to the associated core clients

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Decision Rule: Requirements

Requirement is a conditional clause formatted as followscomponent.parameter<operator>value;

Component is a text containinguser, terminal, network, service, basestation or free text

Parameter is a text such as

name, location, id, user, terminal, network, delay, throughput, ..

Operator is !=, ==, >, < , inc, not

Value is a number or text

Example: network.downlink>21.5; network.downlink=low;

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Decision Rule: Capability action

Capability can be defined by1) Event component.action(value);2) Event/value;component.action(value);3) Event component.parameter=value;

In 1) and 3) the capability action is sent as it is declared to the interestedparties.In 2) the cognitive engine will seek for value from the data cache and set the value inside the ().

For example: HandoverEvent/network.available;handover.to(network.available);May result the following (depending on the network.available known by CE)

HandoverEvent handover.to(wlan1);

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Cognitive API – event formats

• Data and other control information

• Information routing

• Control who access what

• Animation purposes

References: 4Ward, Univerself, Future Internet 1-2, …

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CORE general architecture

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Examples of Core Clients developed in CORE project

Handover / Data offloadingHandoverCoreClientNetshCoreClient

QoS measurement data collectionQosmetCoreClient

User location in LTE networkLteCoreClient

WARP radio resource managementWarpCoreClient

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HandoverCoreClient

External systemBirdstep SafeMoveapplicationVTT’s Mobile IP serviceSeamless handover

HandoverCoreClientCurrent networkAvailable networkHandover capability

3G/4G-WLAN-LANLeave network

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HandoverCoreClient

External systemnetshipconfig

Core ClientCurrent networkAvailable networkHandover capability

WLAN-WLAN4G/3G-WLAN-LANLeave network

Example information and capability definitions for handover core clients:

NetworkFoundEvent network.current=LocalAreaConnection;NetworkFoundEvent network.available=panoulu;

HandoverEvent/network.available;handover.to(network.available);HandoverEvent handover.to(wlan1);HandoverEvent handover.away(panoulu);

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QoS information collection for decision making

External system:Qosmet QoS measurement systemhttp://www.cnl.fi/qosmet.html

QoS measured for both directions between the measurement points for selected data flow.

QoS reported every second

QosmetCoreClient:

• Monitors measured QoS data for changes-> send message for decision making

• Configurable limits for QoS data values-> send message for decision making

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QoS information collection for decision making

measurement durationtimestampuplink packet lossuplink packet loss totaldownlink packet loss downlink packet loss totaluplink packet delay downlink packet delay uplink packet jitter downlink packet jitter throughput downlink

QosmetCoreClient receives the following QoS parameters(typically in 1 seconds interval):

offered load uplinkbytes receivedpackets receivedbytes sentpackets sentdownlink calculated MOSuplink calculated MOS

Example decision data delivered by QosmetCoreClient• throughput.speed=low;• throughput.value=345.22;

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LTECoreClient – user LTE cell location

LteCoreClient receives various information from EAST tool:

• CREATE_ACK – an LTE device has attached to the network• HO_EVENT – an LTE device has made handover• DESTROY_ACK – an LTE device is disconnected• ENB_ASSO_INFO – an LTE base station has been started• STARTUP – the network is restarting

Delivers user cell location and number of clients in a cell to decision making• UE2.location = 65311;• UE3.network=lte;• basestation.cellid=25601;basestation.clients=1;

External system:

• Centria LTE test network• NetHawk East LTE tool

http://www.exfo.com

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WarpCoreClient – WARP radio NW resource management

External system:

• CWC’s WARP radio network• WARP database

WarpCoreClient brings WLAN channel availability information into WARP radio network

• Sets free / occupied WLAN channels

WARPs avoid reserved WLAN channels

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Summary of CORE Trial Environment features

CORE Client-side toolsWindows 7-based network detection, handover

MIP network detection, seamless handovers

Qosmet 2-way network QoS information collector – delay, delay jitter, packet loss, throughput, General QoE (1-5)

LTE user location monitoring – Cell id, IMSI, IP address

MIH Network Information data source (on development)

Networks, basestations, basestation status

WARP Cognitive radio network resource management (on development)

WLAN channel management over network

LTE network resource management (2013)

CORE Cognitive engineIntegrate & control new systems easily

Stand-alone and distributed decision making

Cognitive API for data collection

Browser-based user interfaceDecision rule editorMonitor collected dataVisualisation of data Configuration of client-side tools, policies, access, data types (on development)

Cognitive Engine hosting at VTT CNL

http://core.willab.fi http://www.cnl.fi

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VTT - 70 years oftechnology for business

and society

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DEMONSTRATIONS

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CORE Trial Environment Demo WLAN/LTE offloading

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CORE Trial Environment Demo Centria IPTV priority (LTE-WLAN offloading)

Kaisaniemi

Ratakatu

Puuhkala

S1+X2

S1+X2S1+X2

PPO

iPro

M5 AnalyzerBTS Site Manager

AlavieskaS1+X2

YlivieskaS1+X2

CENTRIA

Wi-Fi1

Wi-Fi2LTECoreClient

Trial users

VTTCORE Trial Environment

Cognitive API

Cognitive Engine

Cognitive Manager

WWWEAST visualization

UI

EXFO EASTLTEMME-SGW-SimulatorLTECoreScript

QosmetQosmetCoreClient

HandoverCoreClientMIP Client





Cognitive EngineVisualization

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Technology

Cognitive Radio and Network R&D Trial Environment