Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2096220631', 'doi': 'https://doi.org/10.1109/infcom.2012.6195469', 'title': 'FemtoCaching: Wireless video content delivery through distributed caching helpers', 'display_name': 'FemtoCaching: Wireless video content delivery through distributed caching helpers', 'publication_year': 2012, 'publication_date': '2012-03-01', 'ids': {'openalex': 'https://openalex.org/W2096220631', 'doi': 'https://doi.org/10.1109/infcom.2012.6195469', 'mag': '2096220631'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1109/infcom.2012.6195469', 'pdf_url': None, 'source': None, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'proceedings-article', 'indexed_in': ['crossref'], 'open_access': {'is_oa': True, 'oa_status': 'green', 'oa_url': 'http://arxiv.org/pdf/1109.4179', 'any_repository_has_fulltext': True}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5007061409', 'display_name': 'Negin Golrezaei', 'orcid': 'https://orcid.org/0000-0001-9066-2304'}, 'institutions': [{'id': 'https://openalex.org/I1174212', 'display_name': 'University of Southern California', 'ror': 'https://ror.org/03taz7m60', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I1174212']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Negin Golrezaei', 'raw_affiliation_strings': ['Department of Electrical Engg., University of Southern California, Los Angeles, USA'], 'affiliations': [{'raw_affiliation_string': 'Department of Electrical Engg., University of Southern California, Los Angeles, USA', 'institution_ids': ['https://openalex.org/I1174212']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5021188761', 'display_name': 'Karthikeyan Shanmugam', 'orcid': 'https://orcid.org/0009-0008-2879-5868'}, 'institutions': [{'id': 'https://openalex.org/I1174212', 'display_name': 'University of Southern California', 'ror': 'https://ror.org/03taz7m60', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I1174212']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Karthikeyan Shanmugam', 'raw_affiliation_strings': ['Department of Electrical Engg., University of Southern California, Los Angeles, USA'], 'affiliations': [{'raw_affiliation_string': 'Department of Electrical Engg., University of Southern California, Los Angeles, USA', 'institution_ids': ['https://openalex.org/I1174212']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5014141359', 'display_name': 'Alexandros G. Dimakis', 'orcid': 'https://orcid.org/0000-0002-4244-7033'}, 'institutions': [{'id': 'https://openalex.org/I1174212', 'display_name': 'University of Southern California', 'ror': 'https://ror.org/03taz7m60', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I1174212']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Alexandros G. Dimakis', 'raw_affiliation_strings': ['Department of Electrical Engg., University of Southern California, Los Angeles, USA'], 'affiliations': [{'raw_affiliation_string': 'Department of Electrical Engg., University of Southern California, Los Angeles, USA', 'institution_ids': ['https://openalex.org/I1174212']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5071725365', 'display_name': 'Andreas F. Molisch', 'orcid': 'https://orcid.org/0000-0002-4779-4763'}, 'institutions': [{'id': 'https://openalex.org/I1174212', 'display_name': 'University of Southern California', 'ror': 'https://ror.org/03taz7m60', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I1174212']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Andreas F. Molisch', 'raw_affiliation_strings': ['Department of Electrical Engg., University of Southern California, Los Angeles, USA'], 'affiliations': [{'raw_affiliation_string': 'Department of Electrical Engg., University of Southern California, Los Angeles, USA', 'institution_ids': ['https://openalex.org/I1174212']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5058252389', 'display_name': 'Giuseppe Caire', 'orcid': 'https://orcid.org/0000-0002-7749-1333'}, 'institutions': [{'id': 'https://openalex.org/I1174212', 'display_name': 'University of Southern California', 'ror': 'https://ror.org/03taz7m60', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I1174212']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Giuseppe Caire', 'raw_affiliation_strings': ['Department of Electrical Engg., University of Southern California, Los Angeles, USA'], 'affiliations': [{'raw_affiliation_string': 'Department of Electrical Engg., University of Southern California, Los Angeles, USA', 'institution_ids': ['https://openalex.org/I1174212']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 46.887, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 776, 'citation_normalized_percentile': {'value': 0.999897, 'is_in_top_1_percent': True, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 99, 'max': 100}, 'biblio': {'volume': None, 'issue': None, 'first_page': '1107', 'last_page': '1115'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T11478', 'display_name': 'Caching and Content Delivery', 'score': 0.9998, 'subfield': {'id': 'https://openalex.org/subfields/1705', 'display_name': 'Computer Networks and Communications'}, 'field': {'id': 'https://openalex.org/fields/17', 'display_name': 'Computer Science'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T11478', 'display_name': 'Caching and Content Delivery', 'score': 0.9998, 'subfield': {'id': 'https://openalex.org/subfields/1705', 'display_name': 'Computer Networks and Communications'}, 'field': {'id': 'https://openalex.org/fields/17', 'display_name': 'Computer Science'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10796', 'display_name': 'Cooperative Communication and Network Coding', 'score': 0.9982, 'subfield': {'id': 'https://openalex.org/subfields/1705', 'display_name': 'Computer Networks and Communications'}, 'field': {'id': 'https://openalex.org/fields/17', 'display_name': 'Computer Science'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10246', 'display_name': 'Mobile Ad Hoc Networks', 'score': 0.9959, 'subfield': {'id': 'https://openalex.org/subfields/1705', 'display_name': 'Computer Networks and Communications'}, 'field': {'id': 'https://openalex.org/fields/17', 'display_name': 'Computer Science'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/backhaul', 'display_name': 'Backhaul (telecommunications)', 'score': 0.43200698}], 'concepts': [{'id': 'https://openalex.org/C41008148', 'wikidata': 'https://www.wikidata.org/wiki/Q21198', 'display_name': 'Computer science', 'level': 0, 'score': 0.8701475}, {'id': 'https://openalex.org/C115537543', 'wikidata': 'https://www.wikidata.org/wiki/Q165596', 'display_name': 'Cache', 'level': 2, 'score': 0.758294}, {'id': 'https://openalex.org/C31258907', 'wikidata': 'https://www.wikidata.org/wiki/Q1301371', 'display_name': 'Computer network', 'level': 1, 'score': 0.7049161}, {'id': 'https://openalex.org/C108037233', 'wikidata': 'https://www.wikidata.org/wiki/Q11375', 'display_name': 'Wireless network', 'level': 3, 'score': 0.5232257}, {'id': 'https://openalex.org/C68649174', 'wikidata': 'https://www.wikidata.org/wiki/Q1379116', 'display_name': 'Base station', 'level': 2, 'score': 0.51295704}, {'id': 'https://openalex.org/C555944384', 'wikidata': 'https://www.wikidata.org/wiki/Q249', 'display_name': 'Wireless', 'level': 2, 'score': 0.49784112}, {'id': 'https://openalex.org/C103760667', 'wikidata': 'https://www.wikidata.org/wiki/Q798444', 'display_name': 'Backhaul (telecommunications)', 'level': 3, 'score': 0.43200698}, {'id': 'https://openalex.org/C120314980', 'wikidata': 'https://www.wikidata.org/wiki/Q180634', 'display_name': 'Distributed computing', 'level': 1, 'score': 0.3738073}, {'id': 'https://openalex.org/C111919701', 'wikidata': 'https://www.wikidata.org/wiki/Q9135', 'display_name': 'Operating system', 'level': 1, 'score': 0.22137535}], 'mesh': [], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1109/infcom.2012.6195469', 'pdf_url': None, 'source': None, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': True, 'landing_page_url': 'http://arxiv.org/abs/1109.4179', 'pdf_url': 'http://arxiv.org/pdf/1109.4179', 'source': {'id': 'https://openalex.org/S4306400194', 'display_name': 'arXiv (Cornell University)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I205783295', 'host_organization_name': 'Cornell University', 'host_organization_lineage': ['https://openalex.org/I205783295'], 'host_organization_lineage_names': ['Cornell University'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}], 'best_oa_location': {'is_oa': True, 'landing_page_url': 'http://arxiv.org/abs/1109.4179', 'pdf_url': 'http://arxiv.org/pdf/1109.4179', 'source': {'id': 'https://openalex.org/S4306400194', 'display_name': 'arXiv (Cornell University)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I205783295', 'host_organization_name': 'Cornell University', 'host_organization_lineage': ['https://openalex.org/I205783295'], 'host_organization_lineage_names': ['Cornell University'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': 'submittedVersion', 'is_accepted': False, 'is_published': False}, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 23, 'referenced_works': ['https://openalex.org/W1515019213', 'https://openalex.org/W1554376039', 'https://openalex.org/W1680189815', 'https://openalex.org/W1968143987', 'https://openalex.org/W2020765652', 'https://openalex.org/W2039434047', 'https://openalex.org/W2061442141', 'https://openalex.org/W2076901266', 'https://openalex.org/W2112053513', 'https://openalex.org/W2122496159', 'https://openalex.org/W2128597432', 'https://openalex.org/W2132651631', 'https://openalex.org/W2137152139', 'https://openalex.org/W2138993731', 'https://openalex.org/W2155277691', 'https://openalex.org/W2171844485', 'https://openalex.org/W2339410153', 'https://openalex.org/W2621717961', 'https://openalex.org/W2988480584', 'https://openalex.org/W3178599963', 'https://openalex.org/W4239066252', 'https://openalex.org/W4297972233', 'https://openalex.org/W74764174'], 'related_works': ['https://openalex.org/W4303414366', 'https://openalex.org/W4297310313', 'https://openalex.org/W4200445394', 'https://openalex.org/W2963149344', 'https://openalex.org/W2594059527', 'https://openalex.org/W2357429841', 'https://openalex.org/W2097644939', 'https://openalex.org/W2041847789', 'https://openalex.org/W2012551222', 'https://openalex.org/W1724300815'], 'abstract_inverted_index': {'We': [0, 20, 215], 'suggest': [1], 'a': [2, 40, 86, 111, 178, 191, 195, 201, 211, 217], 'novel': [3], 'approach': [4], 'to': [5, 62, 110, 145], 'handle': [6], 'the': [7, 12, 47, 63, 71, 89, 121, 125, 131, 141, 159, 182, 186, 231], 'ongoing': [8], 'explosive': [9], 'increase': [10, 230], 'in': [11, 17, 156], 'demand': [13], 'for': [14, 84, 130], 'video': [15, 222], 'content': [16], 'wireless/mobile': [18], 'devices.': [19], 'envision': [21], 'femtocell-like': [22], 'base': [23, 49], 'stations,': [24], 'which': [25, 95, 101], 'we': [26, 189], 'call': [27], 'helpers,': [28], 'with': [29], 'weak': [30], 'backhaul': [31], 'links': [32], 'but': [33], 'large': [34], 'storage': [35], 'capacity.': [36], 'These': [37], 'helpers': [38, 67, 146, 209], 'form': [39], 'wireless': [41, 90], 'distributed': [42, 91, 160, 227], 'caching': [43, 92, 161, 228], 'network': [44], 'that': [45, 57, 133, 165, 175], 'assists': [46], 'macro': [48], 'station': [50], 'by': [51, 100, 200, 235], 'handling': [52], 'requests': [53, 223], 'of': [54, 73, 143, 152, 181, 194, 221], 'popular': [55, 127], 'files': [56, 75, 96, 144], 'have': [58], 'been': [59], 'cached.': [60], 'Due': [61], 'short': [64], 'distances': [65], 'between': [66], 'and': [68, 170, 207, 224], 'requesting': [69], 'devices,': [70], 'transmission': [72], 'cached': [74, 99], 'can': [76, 137, 229], 'be': [77, 98], 'done': [78], 'very': [79], 'efficiently.': [80], 'A': [81], 'key': [82], 'question': [83], 'such': [85], 'system': [87], 'is': [88, 168], 'problem,': [93, 162], 'i.e.,': [94], 'should': [97, 119], 'helpers.': [102], 'If': [103], 'every': [104], 'mobile': [105, 135], 'device': [106, 136], 'has': [107], 'only': [108], 'access': [109, 138], 'exactly': [112], 'one': [113], 'helper,': [114], 'then': [115], 'clearly': [116], 'each': [117, 134], 'helper': [118], 'cache': [120], 'same': [122], 'files,': [123], 'namely': [124], 'most': [126], 'ones.': [128], 'However,': [129], 'case': [132], 'multiple': [139], 'caches,': [140], 'assignment': [142], 'becomes': [147], 'nontrivial.': [148], 'The': [149], 'theoretical': [150, 183], 'contribution': [151], 'our': [153], 'paper': [154], 'lies': [155], '(i)': [157], 'formalizing': [158], '(ii)': [163], 'showing': [164], 'this': [166], 'problem': [167], 'NP-hard,': [169], '(iii)': [171], 'presenting': [172], 'approximation': [173], 'algorithms': [174], 'lie': [176], 'within': [177], 'constant': [179], 'factor': [180], 'optimum.': [184], 'On': [185], 'practical': [187], 'side,': [188], 'present': [190], 'detailed': [192], 'simulation': [193], 'university': [196], 'campus': [197, 219], 'scenario': [198], 'covered': [199], 'single': [202], '3GPP': [203], 'LTE': [204], 'R8': [205], 'cell': [206], 'several': [208], 'using': [210], 'simplified': [212], '802.11n': [213], 'protocol.': [214], 'use': [216], 'real': [218], 'trace': [220], 'show': [225], 'how': [226], 'number': [232], 'served': [233], 'users': [234], 'as': [236, 238], 'much': [237], '400': [239], '-': [240], '500%.': [241]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2096220631', 'counts_by_year': [{'year': 2024, 'cited_by_count': 4}, {'year': 2023, 'cited_by_count': 9}, {'year': 2022, 'cited_by_count': 13}, {'year': 2021, 'cited_by_count': 39}, {'year': 2020, 'cited_by_count': 52}, {'year': 2019, 'cited_by_count': 93}, {'year': 2018, 'cited_by_count': 112}, {'year': 2017, 'cited_by_count': 147}, {'year': 2016, 'cited_by_count': 116}, {'year': 2015, 'cited_by_count': 78}, {'year': 2014, 'cited_by_count': 67}, {'year': 2013, 'cited_by_count': 34}, {'year': 2012, 'cited_by_count': 9}], 'updated_date': '2025-01-10T13:00:42.080864', 'created_date': '2016-06-24'}