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5G RAN Optimisation & Performance — 5G certification courseWatch free

Free preview · The optimisation loop: measure, diagnose, change, verify — opens in the course player

IntermediateReleased Sept 2026

5G RAN Optimisation & Performance

The optimisation loop as a decision procedure run on numbers somebody else produced. Accessibility, retainability, mobility and throughput taken apart until causes that share a symptom can be told apart — and a running theme that the denominator is where the lie lives, because correcting it changes the verdict rather than the decimal place.

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Lessons
31
Video
≈5.1h
Hands-on
5 labs · 5 checkpoints
Before you start
5G RAN Planning & Design

About this course

Who it's for. RAN performance and optimisation engineers, NOC and field teams, and anyone who answers for a KPI they did not compute.

Before you start. 5G RAN Planning & Design — this course operates the cell that one designs, and inherits its reference case by reference rather than by copy. 5G RAN Specialist helps throughout.

This course includes

  • 31 video lessons — the first needs no account, and all are free for your first 7 days
  • Hands-on labs and checkpoints
  • Study pack — question bank and slides
  • A free mock exam to find your gaps
  • Certification exam and a QR-verifiable certificate

Skills you'll gain

  • Counters & KPIs
  • Accessibility analysis
  • Retainability & radio link failure
  • Mobility robustness
  • Throughput & interference
  • Measurement campaign design
  • Parameter change trials
  • Vendor KPI mapping

Syllabus

6 modules · 31 lessons · certification exam

  1. Module 1 — From a design handover to a live cell

    Turn a design handover into a loop you can run: what the operations system stores, why four instruments disagree, and which half of a ratio moved.

    1. The optimisation loop: measure, diagnose, change, verifyWatch free7:25
    2. Counters, KPIs and the measurement object: what the OSS storesFree with an account8:12
    3. Cell trace, device reports and campaigns: four sources, four different answersFree with an account8:59
    4. Numerator and denominator: reading a regression before you touch anythingFree with an account8:20
    5. Four Instruments, One Hour · Checkpoint~6 min
    6. Which Half Moved? · Interactive lab~7 min

    7. Module files

      • M1-worksheet.xlsx17 KB
      • M1-busy-hour-ledger-day-12.csv1 KB
      • M1-change-log-cell-A.csv1 KB
      • M1-daily-counters-cell-A.csv1 KB

  2. Module 2 — Accessibility: why the call does not get in

    Compose accessibility from its stages, learn where each counter arms and which two stages nothing watches, then tell its causes apart on evidence that exists.

    1. The access chain: five stages, and the two no standard counter watchesFree for 7 days with a free account, then with Prime Membership9:02
    2. Setup signalling: five messages, and where each counter armsFree for 7 days with a free account, then with Prime Membership8:27
    3. Composing accessibility: three rates multiplied — and the KPI that is not that numberFree for 7 days with a free account, then with Prime Membership8:59
    4. Random access, failure by failure: two branches in the spec, four in the fieldFree for 7 days with a free account, then with Prime Membership8:29
    5. Cyclic shift and root sequences: a planner’s parameter, a field signatureFree for 7 days with a free account, then with Prime Membership9:02
    6. The evidence the device already stored: reports that name the causeFree for 7 days with a free account, then with Prime Membership8:10
    7. Where Does the Counter Arm? · Checkpoint~5 min
    8. Three Rates, One Number · Interactive lab~6 min

    9. Module files

      • M2-worksheet.xlsx28 KB
      • M2-connection-failure-records.csv1 KB
      • M2-front-of-chain-hours.csv1 KB
      • M2-per-cause-counters-reference-hour.csv1 KB
      • M2-setup-counter-cases.csv1 KB

  3. Module 3 — Retainability and mobility: why it drops, and which parameter cures it

    Measure retainability per active session-second rather than per attempt, classify a handover as too early, too late or the wrong cell, and recognise what tuning cannot cure.

    1. Retainability is a rate per active second, not a drop rateFree for 7 days with a free account, then with Prime Membership10:17
    2. Radio link failure: the causes, and why the timer is only oneFree for 7 days with a free account, then with Prime Membership10:52
    3. After the failure: re-establishment, and the outcome booked as successFree for 7 days with a free account, then with Prime Membership10:58
    4. Too early, too late, or the wrong cell: two variables, and who classifiesFree for 7 days with a free account, then with Prime Membership10:25
    5. The trade-off surface: one axis, two failure modes, an asymmetric costFree for 7 days with a free account, then with Prime Membership10:08
    6. When tuning is the wrong answer: reading the failure’s own measurementsFree for 7 days with a free account, then with Prime Membership10:09
    7. Too Early, Too Late, or the Wrong Cell · Checkpoint~6 min
    8. Where On the Curve? · Interactive lab~7 min

    9. Module files

      • M3-worksheet.xlsx41 KB
      • M3-rlf-reports-week.csv2 KB
      • M3-session-ledger.csv1 KB
      • M3-trigger-knob-values.csv1 KB

  4. Module 4 — Throughput, interference and the faults that imitate them

    Work out why it is slow: the throughput ladder, reported quality against scheduled rate, five causes of a raised uplink interference floor, and the faults that only imitate one.

    1. The throughput ladder: five rungs, and the KPI that is not application speedFree for 7 days with a free account, then with Prime Membership11:07
    2. Reported quality against scheduled rate: reading the gapFree for 7 days with a free account, then with Prime Membership10:45
    3. Rank, layers and resource utilisation: three ways to mis-state a cellFree for 7 days with a free account, then with Prime Membership11:25
    4. Uplink noise rise: five interference classes, named by their discriminatorFree for 7 days with a free account, then with Prime Membership10:21
    5. Overshoot, identity conflicts and the faults that imitate a performance problemFree for 7 days with a free account, then with Prime Membership11:00
    6. The densification trigger, and the change a new carrier cannot makeFree for 7 days with a free account, then with Prime Membership11:28
    7. Four Tests, Five Causes · Checkpoint~6 min
    8. One Hour, Three Answers · Interactive lab~6 min

    9. Module files

      • M4-worksheet.xlsx32 KB
      • M4-cell-hour-occasions.csv1 KB
      • M4-neighbour-relations.csv1 KB
      • M4-uplink-symbol-profile.csv1 KB

  5. Module 5 — From a measurement to a change that ships

    Design a campaign around one question, reduce its samples honestly, and ship a parameter change against a control with the criterion agreed beforehand.

    1. Campaign design: one campaign, one objectiveFree for 7 days with a free account, then with Prime Membership10:23
    2. Binning and percentiles: two rules, and the exceptionFree for 7 days with a free account, then with Prime Membership10:14
    3. What the network collects for you: device measurement, and what it cannot reachFree for 7 days with a free account, then with Prime Membership11:26
    4. How a parameter change ships: baseline, one variable, trial and controlFree for 7 days with a free account, then with Prime Membership11:48
    5. Verification and rollback: the criterion you set before you changeFree for 7 days with a free account, then with Prime Membership11:19
    6. What the automated loop already does, and the seat the human keepsFree for 7 days with a free account, then with Prime Membership12:55
    7. Bin Before You Reduce · Interactive lab~7 min
    8. Did It Work? · Checkpoint~6 min

    9. Module files

      • M5-change-ticket-template.xlsx13 KB
      • M5-worksheet.xlsx51 KB
      • M5-area-squares.csv1 KB
      • M5-campaign-road.csv1 KB
      • M5-drive-log-raw.csv11 KB
      • M5-trial-population.csv1 KB

  6. Module 6 — Vendor names for KPIs and counters

    Optional appendix · not examined

    Match the course's KPIs, counters and parameters to Ericsson and Huawei names — and see why their counts need not agree.

    1. One KPI, three attempt counts: why the setup success rates disagreeFree for 7 days with a free account, then with Prime Membership8:04
    2. Accessibility composed two ways: the same product, a different third stepFree for 7 days with a free account, then with Prime Membership7:47
    3. From a 3GPP parameter to your vendor’s managed object: and the counts that do not line upFree for 7 days with a free account, then with Prime Membership7:57

    4. Module files

      • vendor-mapping-M1-M2.xlsx13 KB

      Vendor names unreviewed. Confirm in the counter reference for your release.

  7. Certification exam

    Earns a certificate

    35 questions · 60 min · 65% to pass — earns your TELCOMA Certified RAN Optimisation Specialist, a QR-verifiable certificate.

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Not ready yet? Take a free 20-question mock exam first.

Look up any acronym in the telecom glossary

Certification

Earn the TELCOMA Certified RAN Optimisation Specialist

Pass the 35-question exam with 65% or more, and the certificate is yours to show anyone.

  • Show proofEvery certificate carries a QR code and a public page that anyone can check.
  • Add it to LinkedInPut it in the Licenses & certifications section of your profile in one click.
  • Build a collectionEach of our 11 courses earns its own certificate.
Specimen of the TELCOMA Certified RAN Optimisation Specialist certificate — the real design, marked SPECIMEN
The certificate you receive — shown as a specimen.

Study materials

Download the 5G RAN Optimisation & Performance question bank and slide deck — every signal check in the course, with answers, plus every figure — and the companion pack, with every module’s worksheets and datasets in one file.

  • Question BankPDF39 KB
  • Slide DeckPPTX15 MB
  • Companion pack — download everythingZIP193 KB

Hands-on learning

Do it, don't just watch it

Modules end with a hands-on exercise — 5 labs · 5 checkpoints in this course. You move the controls, the numbers answer back, and a wrong turn tells you why.

Try this one first:

Which Half Moved? · Interactive lab · ~7 min

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Which Half Moved? — a hands-on interactive lab from 5G RAN Optimisation & Performance

What you'll build

3 of 10 — the rest are in the syllabus

Ways to learn

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  • Study pack — question bank and slides
  • Certification exam and verifiable certificate — this course
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  • Not included: Full-length practice exams
  • Not included: TelcoMentor AI coach
  • Hands-on scenarios — traces, logs, configs — selected traces

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  • Lessons and labs in this course — all for your first 7 days, then the first module
  • Study pack — question bank and slides — for your first 7 days
  • Not included: Certification exam and verifiable certificate
  • Every other course — all for your first 7 days, then the first module
  • Full-length practice exams — for your first 7 days
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