{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:4WTC2FJAHWRIZUZYFTVSIAANTL","short_pith_number":"pith:4WTC2FJA","schema_version":"1.0","canonical_sha256":"e5a62d15203da28cd3382ceb24000d9adb63eb5360a736263c15f17261203a84","source":{"kind":"arxiv","id":"1807.08143","version":1},"attestation_state":"computed","paper":{"title":"Distributed Layered Grant-Free Non-Orthogonal Multiple Access for Massive MTC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Hui Jiang, Qimei Cui, Xiaofeng Tao, Xiaoqi Qin, Xuefei Zhang, Yu Gu","submitted_at":"2018-07-21T12:58:54Z","abstract_excerpt":"Grant-free transmission is considered as a promising technology to support sporadic data transmission in massive machine-type communications (mMTC). Due to the distributed manner, high collision probability is an inherent drawback of grant-free access techniques. Non-orthogonal multiple access (NOMA) is expected to be used in uplink grant-free transmission, multiplying connection opportunities by exploiting power domain resources. However, it is usually applied for coordinated transmissions where the base station performs coordination with full channel state information, which is not suitable "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1807.08143","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-07-21T12:58:54Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"9dea25bd089dddc79de8996373385692f3240b73fbafe30c6773b15b19403d77","abstract_canon_sha256":"20bcf185a4893a21ba91744b2741006abb86f9fb7dfdbcec9564c668d37694fc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:10:09.126723Z","signature_b64":"qK6XY1x92ziVCOwEYbrumQLQ4Vwx9aG1sZmZugyXmulfJ8Nyt9bVtJnIeVDtvGawnP6g+aJ+gGtQQezrHe3oAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e5a62d15203da28cd3382ceb24000d9adb63eb5360a736263c15f17261203a84","last_reissued_at":"2026-05-18T00:10:09.126104Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:10:09.126104Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Distributed Layered Grant-Free Non-Orthogonal Multiple Access for Massive MTC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Hui Jiang, Qimei Cui, Xiaofeng Tao, Xiaoqi Qin, Xuefei Zhang, Yu Gu","submitted_at":"2018-07-21T12:58:54Z","abstract_excerpt":"Grant-free transmission is considered as a promising technology to support sporadic data transmission in massive machine-type communications (mMTC). Due to the distributed manner, high collision probability is an inherent drawback of grant-free access techniques. Non-orthogonal multiple access (NOMA) is expected to be used in uplink grant-free transmission, multiplying connection opportunities by exploiting power domain resources. However, it is usually applied for coordinated transmissions where the base station performs coordination with full channel state information, which is not suitable "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.08143","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1807.08143","created_at":"2026-05-18T00:10:09.126210+00:00"},{"alias_kind":"arxiv_version","alias_value":"1807.08143v1","created_at":"2026-05-18T00:10:09.126210+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.08143","created_at":"2026-05-18T00:10:09.126210+00:00"},{"alias_kind":"pith_short_12","alias_value":"4WTC2FJAHWRI","created_at":"2026-05-18T12:32:05.422762+00:00"},{"alias_kind":"pith_short_16","alias_value":"4WTC2FJAHWRIZUZY","created_at":"2026-05-18T12:32:05.422762+00:00"},{"alias_kind":"pith_short_8","alias_value":"4WTC2FJA","created_at":"2026-05-18T12:32:05.422762+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/4WTC2FJAHWRIZUZYFTVSIAANTL","json":"https://pith.science/pith/4WTC2FJAHWRIZUZYFTVSIAANTL.json","graph_json":"https://pith.science/api/pith-number/4WTC2FJAHWRIZUZYFTVSIAANTL/graph.json","events_json":"https://pith.science/api/pith-number/4WTC2FJAHWRIZUZYFTVSIAANTL/events.json","paper":"https://pith.science/paper/4WTC2FJA"},"agent_actions":{"view_html":"https://pith.science/pith/4WTC2FJAHWRIZUZYFTVSIAANTL","download_json":"https://pith.science/pith/4WTC2FJAHWRIZUZYFTVSIAANTL.json","view_paper":"https://pith.science/paper/4WTC2FJA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1807.08143&json=true","fetch_graph":"https://pith.science/api/pith-number/4WTC2FJAHWRIZUZYFTVSIAANTL/graph.json","fetch_events":"https://pith.science/api/pith-number/4WTC2FJAHWRIZUZYFTVSIAANTL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4WTC2FJAHWRIZUZYFTVSIAANTL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4WTC2FJAHWRIZUZYFTVSIAANTL/action/storage_attestation","attest_author":"https://pith.science/pith/4WTC2FJAHWRIZUZYFTVSIAANTL/action/author_attestation","sign_citation":"https://pith.science/pith/4WTC2FJAHWRIZUZYFTVSIAANTL/action/citation_signature","submit_replication":"https://pith.science/pith/4WTC2FJAHWRIZUZYFTVSIAANTL/action/replication_record"}},"created_at":"2026-05-18T00:10:09.126210+00:00","updated_at":"2026-05-18T00:10:09.126210+00:00"}