The complete engineering guide to migrating from 4G LTE to 5G NR — covering Option 3/3a/3x NSA architecture, EN-DC procedures, SA deployment, spectrum refarming, and inter-RAT mobility.
CAFETELE
One-time purchase — lifetime access, free updates
Written by a telecom architect for engineers — not an academic textbook, not a blog summary
Every architecture visualized — Option 3/3a/3x, SBA, EN-DC signaling flows, bearer types, protocol stacks, spectrum maps
QCI/5QI mapping, bearer comparison, KPI targets, measurement events, timer values, band maps — all 3GPP verified
The most detailed coverage of NSA architecture variants anywhere — three full architecture SVGs with user plane paths
Complete SgNB Addition, Modification, Release signaling flows with timer values, failure handling, and KPI framework
Phase-by-phase NSA to SA migration strategy, N26 interworking, CUPS deployment, spectrum refarming priorities
Common EN-DC failures, root cause analysis, parameter tuning recommendations, drive test methodology
Beautiful black & gold reading experience with dark mode toggle, font controls, reading progress bar, sidebar navigation
Rel-17 through Rel-19 roadmap: NR-DC, NTN, RedCap, AI/ML RAN, FR3 (7-24 GHz), and the path to 6G
One-time purchase — lifetime access — free updates
Launch price — limited time offer
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