Physical Layer vs Wireless Medium

Wired vs Wireless Home Internet Evaluator

Engadget highlights that while ISPs use both wired and wireless delivery to connect homes, neither is universally superior. Simulate packet transit, bufferbloat under family load, weather degradation, and find your optimal setup.

Physical Medium & Packet Flow

Fiber: Glass core (1310/1490nm pulses)
Medium: Single-Mode Optical Glass Link Margin: 99.4% (No RF Fade)
Down / Up Bandwidth
940 / 880
Mbps (Effective)
Unloaded Latency
6 ms
Ping to Gateway
Loaded Bufferbloat
+4 ms
Contention Jitter
Reliability Index
99.9%
Atmospheric Immunity
Optimal Match: FTTH Fiber Infrastructure

Fiber optic cables convey light photons through dielectric silica with zero radio interference, zero rain fade, and symmetrical gigabit pipelines. If installed to your premise, it remains the gold standard for latency-critical households.

Engine ready. Adjust parameters to test physical limits.

Comprehensive Physical vs Wireless Delivery Breakdown

Why neither technology is strictly "better": wired delivers physical immunity and dedicated bandwidth, while wireless delivers rapid deployment, zero trenching, and coverage in rural terrain.

Delivery Tech Type Typical Down / Up Median RTT Weather Vulnerability Installation Hurdle Best Household Scenario
Fiber (FTTH) Wired 500 - 5000 Mbps (Sym) 4 - 12 ms Immune (Underground/Aerial glass) High (Requires fiber drop & ONT) Multi-person WFH, twitch gamers, creators
Cable (DOCSIS 3.1) Wired 300 - 1200 / 20-50 Mbps 14 - 28 ms Very Low (Coax RF shielding) Low (Existing RG6 cable outlet) Everyday family streaming, fast downloads
5G Home (FWA) Wireless 100 - 450 / 20-70 Mbps 28 - 55 ms Moderate (Rain/Foliage attenuation) Instant (Plug-in gateway near window) Renters, suburban areas with good cell signal
LEO Satellite (Starlink) Wireless 50 - 220 / 10-25 Mbps 32 - 65 ms High (Heavy clouds/wet snow fade) Medium (Dish mount with clear sky view) Rural, off-grid, areas without wired lines
Copper DSL (VDSL2) Wired 25 - 100 / 5-15 Mbps 25 - 45 ms Low (Moisture in legacy pots line) Low (Standard phone jack) Basic web browsing where cable is missing

⚡ Bufferbloat & Loaded Latency

Unloaded speedtests hide the real culprit of laggy Zoom calls and online gaming: packet queue buildup at the home modem when simultaneous uploads saturate the channel. Fiber's high symmetrical capacity minimizes queue build-up.

📡 Radio Frequency Attenuation

5G mid-band (3.5 GHz C-band) and millimeter wave signals cannot easily penetrate modern low-E glass or wet tree canopies. Wireless avoids trenching streets, but trades off deterministic signal propagation.

🛰️ The Orbital Physics Reality

Legacy geostationary satellites sit 22,236 miles high, creating an immutable 600ms speed-of-light delay. Low Earth Orbit (LEO) fleets orbit at ~340 miles, slashing ping to ~35ms, though antenna line-of-sight remains non-negotiable.

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