{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:O4FNA3JVCAOYDJOOD46ULFHLSW","short_pith_number":"pith:O4FNA3JV","canonical_record":{"source":{"id":"1809.02234","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-09-06T22:00:35Z","cross_cats_sorted":["cs.PF"],"title_canon_sha256":"67244415277ceb4c1c81911f93cce70bd21c0074badcccde2e1de953bf07ecfe","abstract_canon_sha256":"b27f55b78d3ad71e97709780f4c48534c42e5dc8d0194bd813ff4026ab82f132"},"schema_version":"1.0"},"canonical_sha256":"770ad06d35101d81a5ce1f3d4594eb9580a263241d7eaaded4c7dac3787b9204","source":{"kind":"arxiv","id":"1809.02234","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.02234","created_at":"2026-05-18T00:05:44Z"},{"alias_kind":"arxiv_version","alias_value":"1809.02234v1","created_at":"2026-05-18T00:05:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.02234","created_at":"2026-05-18T00:05:44Z"},{"alias_kind":"pith_short_12","alias_value":"O4FNA3JVCAOY","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"O4FNA3JVCAOYDJOO","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"O4FNA3JV","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:O4FNA3JVCAOYDJOOD46ULFHLSW","target":"record","payload":{"canonical_record":{"source":{"id":"1809.02234","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-09-06T22:00:35Z","cross_cats_sorted":["cs.PF"],"title_canon_sha256":"67244415277ceb4c1c81911f93cce70bd21c0074badcccde2e1de953bf07ecfe","abstract_canon_sha256":"b27f55b78d3ad71e97709780f4c48534c42e5dc8d0194bd813ff4026ab82f132"},"schema_version":"1.0"},"canonical_sha256":"770ad06d35101d81a5ce1f3d4594eb9580a263241d7eaaded4c7dac3787b9204","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:05:44.904443Z","signature_b64":"cmw2ONoNCnxmE+ZPZ4VDUCE6Qg9bEzBIWftds1rRWYIl0wwnK3PC/5ejpdg2NK8fAOxyQMMXSGqYNsjJB9QtCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"770ad06d35101d81a5ce1f3d4594eb9580a263241d7eaaded4c7dac3787b9204","last_reissued_at":"2026-05-18T00:05:44.903809Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:05:44.903809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.02234","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:05:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3HBtczgsMdNhSbRyvXDCMQfIHpxqqfvu6TTqh2Sh9BiXHJ3IA+UEbtwZJYPDt/Pmu9ZaKs5H7KIPAXw2SGHWCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T18:13:19.460034Z"},"content_sha256":"9915b18394ce42aa30e6f09989b867782d4eaa5cb68bc037be0cc20e8f6f9b83","schema_version":"1.0","event_id":"sha256:9915b18394ce42aa30e6f09989b867782d4eaa5cb68bc037be0cc20e8f6f9b83"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:O4FNA3JVCAOYDJOOD46ULFHLSW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Slotted ALOHA Overlay on LoRaWAN: a Distributed Synchronization Approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.PF"],"primary_cat":"cs.NI","authors_text":"Davide Brunelli, Luca Benini, Tommaso Polonelli","submitted_at":"2018-09-06T22:00:35Z","abstract_excerpt":"LoRaWAN is one of the most promising standards for IoT applications. Nevertheless, the high density of end-devices expected for each gateway, the absence of an effective synchronization scheme between gateway and end-devices, challenge the scalability of these networks. In this article, we propose to regulate the communication of LoRaWAN networks using a Slotted-ALOHA (S-ALOHA) instead of the classic ALOHA approach used by LoRa. The implementation is an overlay on top of the standard LoRaWAN; thus no modification in pre-existing LoRaWAN firmware and libraries is necessary. Our method is based "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.02234","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:05:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qqHwRGwu05D9H0+x/k1owFA5zB8MFEV7ORfNG5vyQ18CPjl/TeXRWGwJCRWpCRx8n3Uyb1Za049VywJLOyEXBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T18:13:19.460424Z"},"content_sha256":"fb4505a506267a9c8030384bfeaac6c0969da39b03effa640b55b1ba32e85212","schema_version":"1.0","event_id":"sha256:fb4505a506267a9c8030384bfeaac6c0969da39b03effa640b55b1ba32e85212"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O4FNA3JVCAOYDJOOD46ULFHLSW/bundle.json","state_url":"https://pith.science/pith/O4FNA3JVCAOYDJOOD46ULFHLSW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O4FNA3JVCAOYDJOOD46ULFHLSW/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-31T18:13:19Z","links":{"resolver":"https://pith.science/pith/O4FNA3JVCAOYDJOOD46ULFHLSW","bundle":"https://pith.science/pith/O4FNA3JVCAOYDJOOD46ULFHLSW/bundle.json","state":"https://pith.science/pith/O4FNA3JVCAOYDJOOD46ULFHLSW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O4FNA3JVCAOYDJOOD46ULFHLSW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:O4FNA3JVCAOYDJOOD46ULFHLSW","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"b27f55b78d3ad71e97709780f4c48534c42e5dc8d0194bd813ff4026ab82f132","cross_cats_sorted":["cs.PF"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-09-06T22:00:35Z","title_canon_sha256":"67244415277ceb4c1c81911f93cce70bd21c0074badcccde2e1de953bf07ecfe"},"schema_version":"1.0","source":{"id":"1809.02234","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.02234","created_at":"2026-05-18T00:05:44Z"},{"alias_kind":"arxiv_version","alias_value":"1809.02234v1","created_at":"2026-05-18T00:05:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.02234","created_at":"2026-05-18T00:05:44Z"},{"alias_kind":"pith_short_12","alias_value":"O4FNA3JVCAOY","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"O4FNA3JVCAOYDJOO","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"O4FNA3JV","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:fb4505a506267a9c8030384bfeaac6c0969da39b03effa640b55b1ba32e85212","target":"graph","created_at":"2026-05-18T00:05:44Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"LoRaWAN is one of the most promising standards for IoT applications. Nevertheless, the high density of end-devices expected for each gateway, the absence of an effective synchronization scheme between gateway and end-devices, challenge the scalability of these networks. In this article, we propose to regulate the communication of LoRaWAN networks using a Slotted-ALOHA (S-ALOHA) instead of the classic ALOHA approach used by LoRa. The implementation is an overlay on top of the standard LoRaWAN; thus no modification in pre-existing LoRaWAN firmware and libraries is necessary. Our method is based ","authors_text":"Davide Brunelli, Luca Benini, Tommaso Polonelli","cross_cats":["cs.PF"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-09-06T22:00:35Z","title":"Slotted ALOHA Overlay on LoRaWAN: a Distributed Synchronization Approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.02234","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:9915b18394ce42aa30e6f09989b867782d4eaa5cb68bc037be0cc20e8f6f9b83","target":"record","created_at":"2026-05-18T00:05:44Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"b27f55b78d3ad71e97709780f4c48534c42e5dc8d0194bd813ff4026ab82f132","cross_cats_sorted":["cs.PF"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-09-06T22:00:35Z","title_canon_sha256":"67244415277ceb4c1c81911f93cce70bd21c0074badcccde2e1de953bf07ecfe"},"schema_version":"1.0","source":{"id":"1809.02234","kind":"arxiv","version":1}},"canonical_sha256":"770ad06d35101d81a5ce1f3d4594eb9580a263241d7eaaded4c7dac3787b9204","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"770ad06d35101d81a5ce1f3d4594eb9580a263241d7eaaded4c7dac3787b9204","first_computed_at":"2026-05-18T00:05:44.903809Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:05:44.903809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cmw2ONoNCnxmE+ZPZ4VDUCE6Qg9bEzBIWftds1rRWYIl0wwnK3PC/5ejpdg2NK8fAOxyQMMXSGqYNsjJB9QtCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:05:44.904443Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.02234","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9915b18394ce42aa30e6f09989b867782d4eaa5cb68bc037be0cc20e8f6f9b83","sha256:fb4505a506267a9c8030384bfeaac6c0969da39b03effa640b55b1ba32e85212"],"state_sha256":"3fc6c1c2bb2cc8c6709342e91dccbc774d8fbb41ada636e1d1884c58ef76ee5f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H+tdWQgAeT4udZql2qnv3s9/tvEatAr1RZpgCKb9OP7qhGIf9dQeD4gEVPHTwjEJxAgNldTbWuTNQsL0iUsjDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T18:13:19.463081Z","bundle_sha256":"cb37c1e39be2c69cdb642171d26b62cd7ac3f34c4ecf2fedc816bf4295890498"}}