{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:XTEZ37SR3ESW6PNK774MPLG2GM","short_pith_number":"pith:XTEZ37SR","canonical_record":{"source":{"id":"1503.03912","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2015-03-12T23:20:28Z","cross_cats_sorted":[],"title_canon_sha256":"1b8ce26d70d48330e4cd4adfae7dd6e29cea1e2287a460600f2768f3d66c70d1","abstract_canon_sha256":"3bf85720d68323feabae9d9af9fb3d4886efc561263b78a0cae2077c88c6c5aa"},"schema_version":"1.0"},"canonical_sha256":"bcc99dfe51d9256f3daafff8c7acda332a3919bf14bd163fa8aa0265a245a099","source":{"kind":"arxiv","id":"1503.03912","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.03912","created_at":"2026-05-18T01:37:48Z"},{"alias_kind":"arxiv_version","alias_value":"1503.03912v1","created_at":"2026-05-18T01:37:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03912","created_at":"2026-05-18T01:37:48Z"},{"alias_kind":"pith_short_12","alias_value":"XTEZ37SR3ESW","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"XTEZ37SR3ESW6PNK","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"XTEZ37SR","created_at":"2026-05-18T12:29:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:XTEZ37SR3ESW6PNK774MPLG2GM","target":"record","payload":{"canonical_record":{"source":{"id":"1503.03912","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2015-03-12T23:20:28Z","cross_cats_sorted":[],"title_canon_sha256":"1b8ce26d70d48330e4cd4adfae7dd6e29cea1e2287a460600f2768f3d66c70d1","abstract_canon_sha256":"3bf85720d68323feabae9d9af9fb3d4886efc561263b78a0cae2077c88c6c5aa"},"schema_version":"1.0"},"canonical_sha256":"bcc99dfe51d9256f3daafff8c7acda332a3919bf14bd163fa8aa0265a245a099","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:37:48.983087Z","signature_b64":"2pejLTsHZW8l98S/XJ25Ja9Cdq9X7O2F28INaZcQgTv8tL6G1pkalA7qoZST+GOFhbjoty7pAYWNgF3RCVZOCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bcc99dfe51d9256f3daafff8c7acda332a3919bf14bd163fa8aa0265a245a099","last_reissued_at":"2026-05-18T01:37:48.982639Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:37:48.982639Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.03912","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":"2026-05-18T01:37:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n/K+P+FkUHLJsIxBYkvbylMuKben+t6vi1tMojkNV94daLvYfImgEMbnFhErRHAH2ulUODceKfb+yhubPavZDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:18:52.358568Z"},"content_sha256":"71c3e9e9fec5aa9875144b411959af4126515d3c12143467c31b50af8f73332c","schema_version":"1.0","event_id":"sha256:71c3e9e9fec5aa9875144b411959af4126515d3c12143467c31b50af8f73332c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:XTEZ37SR3ESW6PNK774MPLG2GM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards 1 Gbps/UE in Cellular Systems: Understanding Ultra-Dense Small Cell Deployments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.NI","authors_text":"Amir H. Jafari, David Lopez-Perez, Holger Claussen, Ming Ding","submitted_at":"2015-03-12T23:20:28Z","abstract_excerpt":"Todays heterogeneous networks comprised of mostly macrocells and indoor small cells will not be able to meet the upcoming traffic demands. Indeed, it is forecasted that at least a 100x network capacity increase will be required to meet the traffic demands in 2020. As a result, vendors and operators are now looking at using every tool at hand to improve network capacity. In this epic campaign, three paradigms are noteworthy, i.e., network densification, the use of higher frequency bands and spectral efficiency enhancement techniques. This paper aims at bringing further common understanding and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03912","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":"2026-05-18T01:37:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jz/Oa8nw1gWrG3KjZI/p6Y9F9C7y1sUHkZcC007U1TY61OhNpsPK5Uf6yLTq9nRp9hUYK5JwydnPeeUBGxAGAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:18:52.359186Z"},"content_sha256":"a35aa6f89427bccf786a62ef6fe0ae5a3e48c88596e2682670aeb95382805c6e","schema_version":"1.0","event_id":"sha256:a35aa6f89427bccf786a62ef6fe0ae5a3e48c88596e2682670aeb95382805c6e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XTEZ37SR3ESW6PNK774MPLG2GM/bundle.json","state_url":"https://pith.science/pith/XTEZ37SR3ESW6PNK774MPLG2GM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XTEZ37SR3ESW6PNK774MPLG2GM/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":"2026-05-26T11:18:52Z","links":{"resolver":"https://pith.science/pith/XTEZ37SR3ESW6PNK774MPLG2GM","bundle":"https://pith.science/pith/XTEZ37SR3ESW6PNK774MPLG2GM/bundle.json","state":"https://pith.science/pith/XTEZ37SR3ESW6PNK774MPLG2GM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XTEZ37SR3ESW6PNK774MPLG2GM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:XTEZ37SR3ESW6PNK774MPLG2GM","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":"3bf85720d68323feabae9d9af9fb3d4886efc561263b78a0cae2077c88c6c5aa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2015-03-12T23:20:28Z","title_canon_sha256":"1b8ce26d70d48330e4cd4adfae7dd6e29cea1e2287a460600f2768f3d66c70d1"},"schema_version":"1.0","source":{"id":"1503.03912","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.03912","created_at":"2026-05-18T01:37:48Z"},{"alias_kind":"arxiv_version","alias_value":"1503.03912v1","created_at":"2026-05-18T01:37:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03912","created_at":"2026-05-18T01:37:48Z"},{"alias_kind":"pith_short_12","alias_value":"XTEZ37SR3ESW","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"XTEZ37SR3ESW6PNK","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"XTEZ37SR","created_at":"2026-05-18T12:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:a35aa6f89427bccf786a62ef6fe0ae5a3e48c88596e2682670aeb95382805c6e","target":"graph","created_at":"2026-05-18T01:37:48Z","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":"Todays heterogeneous networks comprised of mostly macrocells and indoor small cells will not be able to meet the upcoming traffic demands. Indeed, it is forecasted that at least a 100x network capacity increase will be required to meet the traffic demands in 2020. As a result, vendors and operators are now looking at using every tool at hand to improve network capacity. In this epic campaign, three paradigms are noteworthy, i.e., network densification, the use of higher frequency bands and spectral efficiency enhancement techniques. This paper aims at bringing further common understanding and ","authors_text":"Amir H. Jafari, David Lopez-Perez, Holger Claussen, Ming Ding","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2015-03-12T23:20:28Z","title":"Towards 1 Gbps/UE in Cellular Systems: Understanding Ultra-Dense Small Cell Deployments"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03912","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":"sha256:71c3e9e9fec5aa9875144b411959af4126515d3c12143467c31b50af8f73332c","target":"record","created_at":"2026-05-18T01:37:48Z","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":"3bf85720d68323feabae9d9af9fb3d4886efc561263b78a0cae2077c88c6c5aa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2015-03-12T23:20:28Z","title_canon_sha256":"1b8ce26d70d48330e4cd4adfae7dd6e29cea1e2287a460600f2768f3d66c70d1"},"schema_version":"1.0","source":{"id":"1503.03912","kind":"arxiv","version":1}},"canonical_sha256":"bcc99dfe51d9256f3daafff8c7acda332a3919bf14bd163fa8aa0265a245a099","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bcc99dfe51d9256f3daafff8c7acda332a3919bf14bd163fa8aa0265a245a099","first_computed_at":"2026-05-18T01:37:48.982639Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:48.982639Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2pejLTsHZW8l98S/XJ25Ja9Cdq9X7O2F28INaZcQgTv8tL6G1pkalA7qoZST+GOFhbjoty7pAYWNgF3RCVZOCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:48.983087Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.03912","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71c3e9e9fec5aa9875144b411959af4126515d3c12143467c31b50af8f73332c","sha256:a35aa6f89427bccf786a62ef6fe0ae5a3e48c88596e2682670aeb95382805c6e"],"state_sha256":"83f98f568b5ae6f08ee77ebe31730e400d86c27f4f38697ea6c2285ab2d0f0a6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BHW7r+dAhl9JZ5G+hqkuOXmiH/si0OD9qpfTeiELa+w3L9n2Bxw9r1iQV6amyxmrbCi2xSU4sN/hWf5JQE7bCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T11:18:52.362644Z","bundle_sha256":"7f640b0ad4c18c2cda8785a196a1c5226bdf7ad854587a2fd257d1f25ed09a9c"}}