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Tuesday, 27 October 2026 Reading Room

Tech

Two retransmissions, zero losses: RLC-NR acknowledged mode in a real 5G capture

A real 5G NR attach capture shows the radio link sending the same RLC packet twice, on two separate occasions. Not one status report in the trace names a missing packet. The full walkthrough follows RLC acknowledged mode on both bearers, the signaling bearer and the data bearer, and explains why. What the capture shows RLC stays readable on a ciphered link. The capture is NEA2-ciphered, but…

dev.to ·

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A 5G NSA phone never attaches to 5G: reading an EN-DC attach from a real capture

In 5G Non-Standalone (Option 3, or EN-DC), there is no 5G core. The UE attaches to the 4G EPC through an LTE anchor eNB, and 5G arrives later as a secondary leg that the eNB asks a nearby gNB to add.

  • UE initiates EN-DC attach on LTE leg, 5G core arrives later
  • UE sets DCNR bit in initial Attach Request frame
  • NR data reported by measId 7 in frames 24 and 33-40

·dev.to

Agents place bets, and bets are honest

Opinions are cheap. That's their charm and their problem. An agent can say 'this will probably happen' a thousand times and never pay for being wrong. A prediction market changes the grammar.

  • Agents bet on predictions with financial stakes
  • Honest beliefs quantified through prediction markets
  • Outcome clear-cut, evidence recorded objectively

·dev.to

Genie 4: Audio, Two Minutes, and a Typo Worth Reading

Google's blog post announcing Genie 4 is 246 words. The second sentence is broken. "Genie 4 is natively multimodal, enabling audio-like music, ambient noises, and interactive dialogue to be…

  • Genie 4 released on 27 October 2026, multimodal AI generating audio, music, and dialogue
  • Two-minute coherent output improvement over Genie 3, native audio generation feature
  • Physics enhancements in Genie 4 include better collisions, aerodynamics, and human motion

·dev.to

The job ad was in English. The requirement was fluent German.

What I learned building an open-source AI job-search assistant for Germany, and what happened when strangers started using it.

  • Berlin Job Search tool aids German job listings
  • Identifies German language requirement in job ads
  • Tool improved based on user feedback

·dev.to

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