Carrier sensing is a key mechanism that enables decentralized sharing
\nof unlicensed spectrum. However, carrier sensing in its current form
\nis fundamentally unsuitable when devices transmit at different power
\nlevels, a scenario increasingly common given the diversity of Wi-Fi
\nAPs in the market and the need for Wi-Fi’s co-existence with new
\nupcoming standards such as LAA\/LWA.\u00a0 The primary contribution of this
\npaper is a novel carrier sensing mechanism — skip correlation — that
\nextends carrier sensing to accommodate multiple transmit power levels.
\nThrough an FPGA based implementation on the WARP platform, we
\ndemonstrate the effectiveness of our technique in a variety of
\nscenarios including support for backward compatibility.<\/p>\n","protected":false},"excerpt":{"rendered":"
Carrier sensing is a key mechanism that enables decentralized sharing of unlicensed spectrum. However, carrier sensing in its current form is fundamentally unsuitable when devices transmit at different power levels, a scenario increasingly common given the diversity of Wi-Fi APs in the market and the need for Wi-Fi’s co-existence with new upcoming standards such as […]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","msr-author-ordering":null,"msr_publishername":"","msr_publisher_other":"","msr_booktitle":"","msr_chapter":"","msr_edition":"","msr_editors":"","msr_how_published":"","msr_isbn":"","msr_issue":"","msr_journal":"","msr_number":"","msr_organization":"","msr_pages_string":"","msr_page_range_start":"","msr_page_range_end":"","msr_series":"","msr_volume":"","msr_copyright":"","msr_conference_name":"USENIX NSDI","msr_doi":"","msr_arxiv_id":"","msr_s2_paper_id":"","msr_mag_id":"","msr_pubmed_id":"","msr_other_authors":"","msr_other_contributors":"","msr_speaker":"","msr_award":"","msr_affiliation":"","msr_institution":"","msr_host":"","msr_version":"","msr_duration":"","msr_original_fields_of_study":"","msr_release_tracker_id":"","msr_s2_match_type":"","msr_citation_count_updated":"","msr_published_date":"2017-03-27","msr_highlight_text":"","msr_notes":"","msr_longbiography":"","msr_publicationurl":"https:\/\/www.usenix.org\/conference\/nsdi17\/technical-sessions","msr_external_url":"","msr_secondary_video_url":"","msr_conference_url":"","msr_journal_url":"","msr_s2_pdf_url":"","msr_year":0,"msr_citation_count":0,"msr_influential_citations":0,"msr_reference_count":0,"msr_s2_match_confidence":0,"msr_microsoftintellectualproperty":true,"msr_s2_open_access":false,"msr_s2_author_ids":[],"msr_pub_ids":[],"msr_hide_image_in_river":0,"footnotes":""},"msr-research-highlight":[],"research-area":[13547],"msr-publication-type":[193716],"msr-publisher":[],"msr-focus-area":[],"msr-locale":[268875],"msr-post-option":[],"msr-field-of-study":[],"msr-conference":[],"msr-journal":[],"msr-impact-theme":[],"msr-pillar":[],"class_list":["post-353000","msr-research-item","type-msr-research-item","status-publish","hentry","msr-research-area-systems-and-networking","msr-locale-en_us"],"msr_publishername":"","msr_edition":"","msr_affiliation":"","msr_published_date":"2017-03-27","msr_host":"","msr_duration":"","msr_version":"","msr_speaker":"","msr_other_contributors":"","msr_booktitle":"","msr_pages_string":"","msr_chapter":"","msr_isbn":"","msr_journal":"","msr_volume":"","msr_number":"","msr_editors":"","msr_series":"","msr_issue":"","msr_organization":"","msr_how_published":"","msr_notes":"","msr_highlight_text":"","msr_release_tracker_id":"","msr_original_fields_of_study":"","msr_download_urls":"","msr_external_url":"","msr_secondary_video_url":"","msr_longbiography":"","msr_microsoftintellectualproperty":1,"msr_main_download":"","msr_publicationurl":"https:\/\/www.usenix.org\/conference\/nsdi17\/technical-sessions","msr_doi":"","msr_publication_uploader":[{"type":"url","title":"https:\/\/www.usenix.org\/conference\/nsdi17\/technical-sessions","viewUrl":false,"id":false,"label_id":0}],"msr_related_uploader":"","msr_citation_count":0,"msr_citation_count_updated":"","msr_s2_paper_id":"","msr_influential_citations":0,"msr_reference_count":0,"msr_arxiv_id":"","msr_s2_author_ids":[],"msr_s2_open_access":false,"msr_s2_pdf_url":null,"msr_attachments":[{"id":0,"url":"https:\/\/www.usenix.org\/conference\/nsdi17\/technical-sessions"}],"msr-author-ordering":[{"type":"text","value":"Romil Bhardwaj","user_id":0,"rest_url":false},{"type":"user_nicename","value":"krchinta","user_id":32577,"rest_url":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/microsoft-research\/v1\/researchers?person=krchinta"},{"type":"user_nicename","value":"ramjee","user_id":33337,"rest_url":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/microsoft-research\/v1\/researchers?person=ramjee"}],"msr_impact_theme":[],"msr_research_lab":[],"msr_event":[],"msr_group":[144939],"msr_project":[212081],"publication":[],"video":[],"msr-tool":[],"msr_publication_type":"inproceedings","related_content":{"projects":[{"ID":212081,"post_title":"Green Spaces","post_name":"green-spaces","post_type":"msr-project","post_date":"2015-12-04 02:52:05","post_modified":"2017-06-12 13:45:58","post_status":"publish","permalink":"https:\/\/www.microsoft.com\/en-us\/research\/project\/green-spaces\/","post_excerpt":"Connecting the Next Billion Users to the Broadband Internet. 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