{"id":511805,"date":"2018-10-15T01:23:17","date_gmt":"2018-10-15T08:23:17","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/?post_type=msr-research-item&#038;p=511805"},"modified":"2018-10-17T08:17:14","modified_gmt":"2018-10-17T15:17:14","slug":"interference-management-for-unlicensed-users-in-shared-cbrs-spectrum","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/interference-management-for-unlicensed-users-in-shared-cbrs-spectrum\/","title":{"rendered":"Interference management for unlicensed users in shared CBRS spectrum"},"content":{"rendered":"<p><span style=\"float: none; background-color: transparent; color: #333333; font-family: 'Helvetica Neue',Helvetica,Arial,verdana,tahoma,sans-serif; font-size: 16px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; text-align: left; text-decoration: none; text-indent: 0px;\">The citizen broadband radio service (CBRS) is a newly re-purposed spectrum band in 3550-3700 MHz, reclaiming spectrum occasionally used by radars and other incumbents for mobile data communication. It is also a poster child for future LTE-based dynamic spectrum access systems. At present, CBRS does not manage interference from unlicensed LTE users, which we show can be detrimental for its performance. In this paper we develop F-CBRS, a decentralized spectrum interference management system for unlicensed LTE users in the CBRS band. We first look at how much information can each operator be allowed to conceal and how much it has to be mandated (by a regulator) to disclose, and formally prove that the network can achieve fairness only if all operators share fully verifiable information about base station locations and user activity. Using this insight we design a channel allocation scheme to efficiently utilize spectrum and incentivise collaboration. This also includes a simple, non-disruptive channel change scheme to frequently and efficiently change channels to accommodate dynamic traffic and environments. Through simulation and testbed evaluation, we show that we increase throughput of more than 90% of the flow by 80%-100% compared to the current CBRS protocol.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The citizen broadband radio service (CBRS) is a newly re-purposed spectrum band in 3550-3700 MHz, reclaiming spectrum occasionally used by radars and other incumbents for mobile data communication. It is also a poster child for future LTE-based dynamic spectrum access systems. At present, CBRS does not manage interference from unlicensed LTE users, which we show [&hellip;]<\/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":"","footnotes":""},"msr-content-type":[3],"msr-research-highlight":[],"research-area":[13547],"msr-publication-type":[193716],"msr-product-type":[],"msr-focus-area":[],"msr-platform":[],"msr-download-source":[],"msr-locale":[268875],"msr-post-option":[],"msr-field-of-study":[],"msr-conference":[],"msr-journal":[],"msr-impact-theme":[],"msr-pillar":[],"class_list":["post-511805","msr-research-item","type-msr-research-item","status-publish","hentry","msr-research-area-systems-and-networking","msr-locale-en_us"],"msr_publishername":"ACM","msr_edition":"","msr_affiliation":"","msr_published_date":"2018-12-4","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":"511808","msr_publicationurl":"","msr_doi":"","msr_publication_uploader":[{"type":"file","viewUrl":"https:\/\/www.microsoft.com\/en-us\/research\/uploads\/prod\/2018\/10\/conext18-final36.pdf","id":"511808","title":"conext18-final36","label_id":"243109","label":0}],"msr_related_uploader":"","msr_attachments":[{"id":511808,"url":"https:\/\/www.microsoft.com\/en-us\/research\/uploads\/prod\/2018\/10\/conext18-final36.pdf"}],"msr-author-ordering":[{"type":"text","value":"Ghufran Baig","user_id":0,"rest_url":false},{"type":"text","value":"Ian Kash","user_id":0,"rest_url":false},{"type":"user_nicename","value":"Bozidar Radunovic","user_id":31286,"rest_url":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/microsoft-research\/v1\/researchers?person=Bozidar Radunovic"},{"type":"user_nicename","value":"Thomas Karagiannis","user_id":34031,"rest_url":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/microsoft-research\/v1\/researchers?person=Thomas Karagiannis"},{"type":"text","value":"Lili Qiu","user_id":0,"rest_url":false}],"msr_impact_theme":[],"msr_research_lab":[199561],"msr_event":[],"msr_group":[],"msr_project":[463632],"publication":[],"video":[],"download":[],"msr_publication_type":"inproceedings","related_content":{"projects":[{"ID":463632,"post_title":"Project Belgrade: Affordable connectivity in the TV white space with 4G\/LTE technology","post_name":"project-belgrade","post_type":"msr-project","post_date":"2018-01-30 04:10:24","post_modified":"2023-03-09 11:01:07","post_status":"publish","permalink":"https:\/\/www.microsoft.com\/en-us\/research\/project\/project-belgrade\/","post_excerpt":"Affordable connectivity in the TV white space spectrum with cellular radio technology Motivation Unlicensed wireless is ubiquitous, by some accounts carrying over 80% of overall mobile data traffic. However, today\u2019s unlicensed wireless technologies are effective only over short distances. The only exceptions are narrow-band IoT solutions (e.g. LoRA, Sigfox) which have an extended range but also a very low throughput. Consequently, high-bandwidth (1Mbps or more) and long range (several hundred meters) connectivity today can only&hellip;","_links":{"self":[{"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-project\/463632"}]}}]},"_links":{"self":[{"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-research-item\/511805"}],"collection":[{"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-research-item"}],"about":[{"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/types\/msr-research-item"}],"version-history":[{"count":2,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-research-item\/511805\/revisions"}],"predecessor-version":[{"id":543417,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-research-item\/511805\/revisions\/543417"}],"wp:attachment":[{"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/media?parent=511805"}],"wp:term":[{"taxonomy":"msr-content-type","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-content-type?post=511805"},{"taxonomy":"msr-research-highlight","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-research-highlight?post=511805"},{"taxonomy":"msr-research-area","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/research-area?post=511805"},{"taxonomy":"msr-publication-type","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-publication-type?post=511805"},{"taxonomy":"msr-product-type","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-product-type?post=511805"},{"taxonomy":"msr-focus-area","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-focus-area?post=511805"},{"taxonomy":"msr-platform","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-platform?post=511805"},{"taxonomy":"msr-download-source","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-download-source?post=511805"},{"taxonomy":"msr-locale","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-locale?post=511805"},{"taxonomy":"msr-post-option","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-post-option?post=511805"},{"taxonomy":"msr-field-of-study","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-field-of-study?post=511805"},{"taxonomy":"msr-conference","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-conference?post=511805"},{"taxonomy":"msr-journal","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-journal?post=511805"},{"taxonomy":"msr-impact-theme","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-impact-theme?post=511805"},{"taxonomy":"msr-pillar","embeddable":true,"href":"https:\/\/www.microsoft.com\/en-us\/research\/wp-json\/wp\/v2\/msr-pillar?post=511805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}