LTE SON

Subject: LTE-A and 5G
Category: Emerging Techniques
Duration: 3 days

Course outline:

LTE and SON Introduction

● Features of LTE Releases and main radio parameters
● LTE / LTE-Advanced network architecture (UE, eNB, HeNB, RN, MME, S-GW, P-GW, HSS, etc.)
● Heterogeneous Networks (HetNets) in the context of SON
● SON concept and background (SON drivers, expected benefits and challenges)
● SON areas (self-configuration, self-optimization and self-healing)

SON Frameworks in NGMN, 3GPP and Research Projects

● SON architecture types (centralized, distributed and hybrid)
● SON features evolution over 3GPP Rel. 8, 9 and 10
● 3GPP Management Reference Model (NM, DM, EM)
● NGMN SON use cases
● SOCRATES as a main SON research project (Network Operational Process)
● SOCRATES SON framework (requirements, assessment criteria, use cases and verification approach)
● SOCRATES interacting use cases (triggering, evaluation and coordination framework)

LTE Self-Configuration (S-Conf)

● Self-Configuration within SON lifecycle
● eNB auto-connectivity and security setup
● Dynamic Radio Configuration (DRC)
● Example S-Conf algorithm (adjustment of transmission parameters)
● Auto configuration of Physical Cell Id (PCI)
● Automatic Neighbor Relation Function (ANRF)
● HetNet S-Conf (HeNB identification, Relay Node auto-connectivity and ANR)

LTE Self-Optimization (S-Opt)

● Self-Optimization versus RRM (large and small scale resource management)
● Coverage and Capacity Optimization (CCO)
● Mobility Load Balancing (MLB) and Traffic Steering (TS)
● Mobility Robustness Optimization (MRO)
● RACH Optimization (RO)
● Inter-Cell Interference Coordination (ICIC)
● Energy Saving Management (ESM)
● 3GPP support for self-optimization (X2 interface, procedures and messages, UE reports for self-optimization)
● SON performance indication framework in 3GPP
● Self-Optimization for HetNets (interference management – eICIC, range expansion, ABS, control channel protection, etc.)

LTE Self-Healing (S-Heal)

● Automatic network failure detection, diagnostics and recovery
● Cell degradation detection (anomaly detection, performance metrics)
● Cell degradation diagnosis (root cause finding)
● Cell outage compensation
● 3GPP use cases for S-Heal

SON Operation

● Interaction between SON use cases
● SON conflicts (spatial and temporal conflicts, parameter and metric value conflicts)
● Co-Design of SON functions
● Coordination of SON functions
● SON coordinator framework (policy, autognostics, guard and alignment functions)
● SON function design process within coordination framework
● SON supporting function: Minimization of Drive Tests (MTD)
● TRACE functionality for MDT (area based and subscriber based MDT)
● Immediate and Logged MDT measurements

SON in Evolved Packet Core (EPC)

● EPC S-Conf: EPC element auto-configuration; MME ANR support
● EPC S-Opt: S1 Load Balancing; MME offload; Signaling, Latency and IP address optimization
● EPC S-Heal: Fast GW convergence
● VoIP SON: voice network monitoring and resource optimization

3GPP Multi-RAT SON

● Importance of Multi-RAT SON approach
● Cross technology SON (including high level architecture)
● Example algorithms: Multi-RAT ES and MLB
● Example antenna based SON architecture for Multi-RAT base station

Business SON Issues

● Business benefits of SON (including S-Conf, S-Opt and S-Heal)
● Network costs framework (TCO and OPEX calculation)
● Example business case evaluation (SON Coordinator) SON return of investment (ROI)
case study example: Self-Healing

Future of SON

● Research concept for SON – Cognitive Radio Networks (CRN)
● SON to CRN evolution
● SON features extensions in future 3GPP releases

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