Pith Number

pith:EHS5SATK

pith:2026:EHS5SATKMOLUR5KY3F46YWHINQ

not attested not anchored not stored refs resolved

UPSim: UxNB Propagation Simulator for 3D Map-Driven FR3 Deployments

Evgenii Vinogradov

UPSim derives visibility regions from 3D building geometry to model FR3 air-to-ground channels for UAVs without full per-position ray tracing.

arxiv:2605.17378 v1 · 2026-05-17 · eess.SP · cs.NI

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The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

Calibration and validation against FR3 ray tracing data using the global 3D-GloBFP building dataset demonstrate that UPSim accurately reproduces empirical channel distributions.

C2weakest assumption

The assumption that deterministic visibility regions derived from shadow projection of 3D building geometry, when combined with LOS-state-specific and altitude-aware path loss plus correlated fading, sufficiently capture real propagation behavior for the target FR3 UAV scenarios without full per-position ray tracing.

C3one line summary

UPSim is a ray-tracing-calibrated semi-deterministic simulator for FR3 air-to-ground propagation in UAV networks that derives visibility from 3D maps and adds altitude-aware path loss and fading.

References

22 extracted · 22 resolved · 0 Pith anchors

[1] 6G wireless communications in 7–24 GHz band: Opportunities, techniques, and challenges, 2025

[2] Propagation data and prediction methods required for the design of terrestrial broadband radio access systems oper- ating in a frequency range from 3 to 60 GHz„ 2023

[3] 3D- GloBFP: the first global three-dimensional building footprint dataset, 2024

[4] 3D beamforming and handover analysis for UA V networks, 2020

[5] Ray-tracing Simulation and Hybrid Channel Modeling for Low-Terahertz UA V Communications, 2021

Formal links

1 machine-checked theorem link

Receipt and verification

First computed	2026-05-20T00:03:55.497138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21e5d9026a639748f558d979ec58e86c3237b80a09de0a57b64f08eb43a37743

Aliases

arxiv: 2605.17378 · arxiv_version: 2605.17378v1 · doi: 10.48550/arxiv.2605.17378 · pith_short_12: EHS5SATKMOLU · pith_short_16: EHS5SATKMOLUR5KY · pith_short_8: EHS5SATK

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/EHS5SATKMOLUR5KY3F46YWHINQ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 21e5d9026a639748f558d979ec58e86c3237b80a09de0a57b64f08eb43a37743

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87e4a41a693b235d14076c6dd39912f19e18dc2bb8f01350bda09f9c135915ac",
    "cross_cats_sorted": [
      "cs.NI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2026-05-17T10:40:18Z",
    "title_canon_sha256": "68a625a3f0154b32b2a7ea5726ee65be0617eba5aec01427c2a4582d67d280ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.17378",
    "kind": "arxiv",
    "version": 1
  }
}