I am not an LTE expert. I just write software that bumps up against LTE and wanted to learn more about it. This book was highly recommended by the folk with whom I asked. However, I like the coverage, explanations, and indexing significantly better in several other books, to wit:-- Christopher Cox, "An Introduction to LTE", Second Edition-- Chris Johnson, "Long Term Evolution in Bullets", 2nd Edition (prefer the more pricey color edition from Lulu press)-- Kreher & Gaenger, "LTE Signalling: Troubleshooting and Performance Measurement", Second EditionAgain, this book was the one several coworkers recommended to me, so I'm sure it's a good book -- enough so to purchase it.