SOCRATES Self-Optimisation and Self-Configuration in Wireless - PowerPoint PPT Presentation

SOCRATES Self-Optimisation and Self-Configuration in Wireless Networks www.fp7-socrates.eu

Outline • SOCRATES overview • Initial progress • Use cases • Requirements • Assessment criteria • Interactions and parameter groups • SOCRATES links to NGMN and 3GPP

Project overview • SOCRATES • Self-Optimisation and self-ConfiguRATion in wirelEss networkS • Project period • 3-year duration: From 01/01/2008 until 31/12/2010 • Effort • Number of person months: 378 • Total project costs: € 4,980,433 • Consortium

Key issues • Focus on 3GPP LTE (E-UTRAN) • Self-organisation in wireless networks • Self-configuration • e.g. ‘plug-and-play’ of new base stations • Self-optimisation • measurements, processing, parameter adjustment, … • continuous loop • Self-healing • failure detection • automatic minimisation of coverage/capacity loss

Objectives • Project objectives • Development of methods and algorithms for self-organisation • autonomous parameter adjustment • Specification of the required measurements • statistical accuracy, methods of retrieval, needed protocol interfaces • Validation and demonstration of the solutions • extensive simulation experiments • Assessment of the operational impact • e.g. radio network planning and capacity management processes • Input to 3GPP standardisation and NGMN activities • Quantitative character • Development of methods and algorithms • Quantitative assessment • simulation of scenarios • assessment of OPEX and CAPEX savings • Contacts and cooperation • self-* issues, autonomous networking, … • FP7: E3, 4WARD, AUTOI, EFIPSANS, EURO-NF, …. • COST 2100 • 3GPP, NGMN, WWRF, … • …

Organisation of project work • Five work packages Time

WP2: Use cases and framework • Key objectives • Define the use cases for self-organising networks • Define the requirements and assessment criteria • Establish framework for development of self-organisation methods • Main activities and deliverables completed (January – August 2008) • A2.1: Generate a detailed list of use cases • Deliverable D2.1 • A2.2 / A2.3: Determine requirements and assessment criteria • Deliverables D2.2, D2.3 • Establish framework for development of self-organisation methods • Deliverable D2.4 See the final slide in this presentation for references to public deliverables

Full list of SOCRATES use cases Self-optimisation • Self-configuration • Intell. selecting site locations • Radio network optimisation • Automatic generation of default • Interference coordination parameters for NE insertion • Self-optimisation of physical channels • Network authentication • RACH optimisation • Hardware/capacity extension • Self-optimisation of home eNodeB • GOS/QoS related parameter optimisation • Admission control parameter optimisation • Self-healing • Congestion control parameter optimisation • Packet scheduling parameter optimisation • Cell outage prediction • Link level retransmission scheme • Cell outage detection optimisation • Cell outage compensation • Coverage hole detection and compensation • Handover related optimisation These use cases have all been described in • Handover parameter optimisation SOCRATES, but only a subset is being • Load balancing considered in WP3 and WP4 • Neighbour cell list • Others • Reduction of energy consumption • Tracking areas See D2.1 and D2.2 • TDD UL/DL switching point • Management of relays and repeaters • Spectrum sharing • MIMO

Focus in WP3 and WP4: Developing solutions for use cases • Already started • Cell outage detection and compensation • Coverage hole detection and compensation • Self-optimisation of home eNodeB • Load balancing • Interference coordination • Handover parameter optimisation • Packet scheduling parameter optimisation • To be started in February 2009 • Management of relays and repeaters • Admission and congestion control parameter optimisation • Automatic generation of default parameters for NE insertion • Links with NGMN use cases • First results expected mid-2009

Technical requirements: Categories as used in SOCRATES Performance and complexity Stability Robustness Timing Interaction Architecture and scalability Required inputs

Assessment criteria • Assessment objectives: • Evaluation of the SON algorithms that will be developed • ‘Which algorithm is best’ if more than one algorithm for a use case • Assessment of the gains that can be achieved using SON • By comparison with manual network operation • Metrics considered are: • Performance (GoS/QoS) • Coverage • Capacity • OPEX • CAPEX • Benchmarking approach was developed to compare metrics 11 WWW.FP7-SOCRATES.EU

Assessment criteria - Key messages Assessment of SON requires the introduction of OPEX and CAPEX metrics Benchmarking is required to obtain an overall assessment The most relevant metrics depend on the use case Absolute gains depend on current operator approach Assessment of gains is an important part of the development of SON algorithms 12 WWW.FP7-SOCRATES.EU

Grouping of parameters and interactions • Multiple self-organisation use cases UE eNodeB ... • Use cases: Measurements Measurements • different use cases might have different optimum values for the same parameter • use cases interact with each other • Problems: • Use cases can work against each other Use Case 1 Use Case 2 Use Case 3 • Performance depends on multiple use cases • Identification of use cases that need to ... be Parameter 1 Parameter 2 • coordinated • simulated together • Initial study shows that majority of parameters are coupled

Control and Coordination • There is a need to: • Handle interactions between use cases • Coordinate parameters updates • Approach for managing interaction and coordination • Logical view of the controller and coordinator • Distributed • Centralized • SOCRATES will initially consider stand-alone use cases, and then consider the interactions between these use cases

What can SOCRATES contribute to 3GPP? • Promotion of solutions in standardisation through 3GPP contributing SOCRATES members • Evaluation methodology & parameters to enable a common analysis and evaluation of the benefits of SON use cases  Standardisation of “Measures” for SON use cases • Providing the framework and interfaces according to the definition in SOCRATES for SON, at least for self- optimisation

What can SOCRATES contribute to 3GPP? • Supporting activities for Release 9 and 10 version of 3GPP documents, such as TR 36.902 (Self-configuring and self- optimizing network use cases and solutions) • Enhancement and completion of use cases: • Coverage and capacity optimisation • Interference reduction • Mobility load balancing optimisation • Coverage hole management and Cell outage management (  Mobility robustness) • Handover optimisation • SOCRATES will be doing detailed simulations on the use cases, therefore standardisation contributions will have a solid technical basis

Challenges for standardisation contribution out of SOCRATES • The standardisation directly out of a research project is difficult, therefore • Close cooperation of the participating SOCRATES members is necessary • Involvement of standardisation delegates already during planning and preparation of contribution • It is not expected that the details of algorithms as developed by SOCRATES will be standardised. Standardisation will relate to measurements, architecture and interfaces.

SOCRATES and NGMN • SOCRATES has presented initial progress to NGMN operators • Feedback from NGMN was that SOCRATES is doing useful work, and NGMN is keen to continue interaction and cooperation with SOCRATES • SOCRATES fully supports this!

SOCRATES liaisons to external fora Forum Partner Representative Contact Person within SOCRATES 3GPP RAN 2 Vodafone Assen Golaup Neil Scully 3GPP RAN 3 NSN Alex Vesely / Christoph Schmelz Karri Ranta- Aho 3GPP SA 5 Ericsson Per Elmdahl Ove Linnell NGMN Vodafone Neil Scully Neil Scully COST 2100 TUBS Thomas Kürner Thomas Kürner WWRF NSN Werner Mohr Christoph Schmelz

References • SOCRATES website: www.fp7-socrates.eu • The following SOCRATES deliverables are available for download from the website (under ‘Publications’): • SOCRATES D2.1, “ Use cases for self-organising networks ” • SOCRATES D2.2, “ Requirements for self-organising networks” • SOCRATES D2.3, “ Assessment criteria for self-organising networks ” • SOCRATES D2.4, “ Framework for the development of self- organisation methods ” • SOCRATES D5.3, “ Dissemination plan ” • For further information, please contact: Neil Scully Vodafone Group R&D Neil.Scully@vodafone.com +44 7919 994699