Parameter Inconsistency and Auto Correction
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This document describes Accela's Configuration Management solution which provides complete configuration management and consistency analysis across multi-vendor, multi-technology networks. It offers automated inconsistency detection and correction through parameter database checks, reference database comparisons, vendor feature checks, and integration of PM and trace data. Example checks listed include neighbor relations, OSS parameter definitions, geographical checks, and statistical checks using performance and trace data. The solution supports auto-correction of inconsistencies by direct access to network elements and maintains parameter health especially during network upgrades. It has been used by one tier 1 mobile operator for radio access, core, transport and IP networks supporting 37 million subscribers on over 30,000 2G base stations and 24,000 3G nodes.
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Parameter Inconsistency and Auto Correction
- 1. Innovile – Accela Configuration Management Consistency Analysis
- 3. Complete Configuration Management Solution oMulti-Vendor, Multi- Technology Parameter Database oRan, Core, TX, IP layer consistency checks oEasy-to-add new consistency checks oAutomated Inconsistency correction oReference database comparison oVendor based feature checks oPM and Trace data integration for deeper inspection oInter-Vendor operability ACCELA – Configuration Management (CM)
- 4. ACCELA – Configuration Management (CM) • Neighbour Relations Check • One way Missing Relations • Co-Site Missing Relations Check • Number of Relations • Multi Carrier Neighbour Definitions Check • Neighbour Definitions Between 2G And F2 Cells • Neighbour Definitions Between F2 And F1 Cells • UMTS Co-Cell Neighbourhood Consistency • Inconsistent External Cell Attributes • Neighbor-External Cell Definitions • Wrong LAC-CI Definitions • Multiple Definitions • Same BCCH-BSIC-SC-PCI Pairs in Neighbors • Wrong Frequency Definition • Internal-External MSC LAC-CI Neigbor Relation Checks: OSS Definitions Checks: Off the Shelf Checks
- 5. ACCELA – Configuration Management (CM) Off the Shelf Checks • Cell - Neighbor Distance • Cell - Non Neighbor Distance • Same BCCH Distance • Same BCCH/BSIC Pair Distance • Same SC/PCI Distance • Selection Priority Based on Distance • Site Type - Power • Power and Attenuation • TRX Number Decreasing-Increasing Cells • TRX - TCH Count • Cell On-air Status Change • Same LAC In More Then One BSC / RNC • Missing BA List • Non-Defined HSDPA_QAM64, EUL, Multi Carrier • Qoffset2sn Checks in 3G -> 3G Neighborhoods • Cosite 2G/3G Cell Number Difference • Own BCCH Check in BA List • “And Many more Additional Special Checks..” Geographical Checks: Parameter & Feature Check Examples: • Statistical Checks – Using PM and Trace Data
- 6. ACCELA – Configuration Management (CM) Reference DB ... Reference DB Rural Sites Reference DB Indoor Sites Reference DB Macro Sites Live Network Configuration Configuration Audit with Multiple Reference Lists vs Live Network Configuration Unlimited Reference List support based on: • Site Type • Regional Rules • Vendor/Technology Created by: • Golden Sites • Centralized Teams • Regional Teams Create “Reference Lists” directly from “Golden Sites” o Radio Access Network o Core Network o Transport Network o IP Network Network Parameter Audit Based on “Reference Parameter Lists”
- 7. ACCELA – Configuration Management (CM) AutoCorrection Features Vendor 1 NMS Vendor2 NMS Vendor X RNC Vendor X BSC Vendor X NodeB Vendor X e-NodeB ETL PLatform Reference DB Built-in and Special Checks DB Multi Vendor Script Library Inconsistency Finder Service Network Communicator CM Dump Data Integration Accela CM Database Network Devices Vendor X e-NodeB Vendor X Router • Continuous Parameter Consistency Control • Scheduled Parameter Correction • Direct Access to Network Elements • Maintain Network Parameter Health especially on heavy swap and roll-out phases • 2-way script and execution evaluation for error-free operations Inconsistency findings feeding to Script Library Automated Execution of Correction Scripts
- 8. ACCELA – Configuration Management (CM) since 2012 700+ users from 26 different departments 250+ scheduled health check reports GMS, 3G, LTE inter-technology consistency checks Automated inconsistency correction Multi-Vendor Inconsistency Checks 37M Subscribers 30.000 2G base stations 24.000 3G Node-Bs 9.000 4G+ Sites Use Case – Tier 1 Operator • RAN • Core • Transport • IP