US three-tiered authorization framework model overview Tekes Trial meeting, 7.5.2014 Marja Matinmikko VTT Technical Research Centre of Finland Outline Overview of US activity Overview of the US three-tier hierarchy model Incumbent Access Priority Access General Authorized Access Spectrum Access System (SAS) Conclusions 09/05/2014 2 Overview of US activity PCAST report1 in July 2012 to make more spectrum available for mobile broadband Notice of Proposed Rulemaking and Order (NPRM)2 in December 2012 to create Citizens Broadband Service in 35503650 MHz band with small cells and sharing Further Notice of Proposed Rulemaking (FNPRM)3 in April 2014 to propose specific rules for a new Citizens Broadband Radio Service (CBRS) in 3550-3650 MHz band 1 http://www.whitehouse.gov/sites/default/files/microsites/ostp/pcast_spectrum_report_final_july_20_2012.pdf 2 http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-12-148A1.pdf 3 http://transition.fcc.gov/Daily_Releases/Daily_Business/2014/db0425/FCC-14-49A1.pdf 09/05/2014 3 Three-tiered authorization framework Overview of the model Incumbent Access (IA) Register with database to get guaranteed protection with exclusive right Priority Access (PA) Register with database to get short-term priority operating rights General Authorized Access (GAA) Opportunistic access without guarantees for interference protection Additionally, ”Contained Access Users” 09/05/2014 5 Incumbent Access (IA) layer Existing primary operations including authorized federal users and FSS earth stations Protected from harmful interference from citizen broadband radio service users by geographic exclusion zones Interference management is controlled by a dynamic Spectrum Access System (SAS) 09/05/2014 6 Priority Access (PA) layer PA users receive short term priority authorization to operate within designated geographic areas Priority Access Licenses (PALs) – 1 year 10 MHz unpaired channel in a single census track awarded with competitive bidding and ability to aggregate channels Any entity eligible to hold a FCC license could apply for PAL Protected from harmful interference from the General Authorized Access (GAA) layer No fixed band plan SAS dynamically assigns PA channels Small cells 09/05/2014 7 General Authorized Access (GAA) layer Entitled to use the spectrum on opportunistic basis Not entitled for interference protection A defined floor of GAA spectrum availability (50%) to ensure nationwide GAA access availability Additionally, GAA could access unused PA bands Opportunities for Contained Access Users (CAU) such as hospitals and other critical users to obtained priority spectrum for indoor use on GAA basis SAS dynamically assigns GAA channels 09/05/2014 8 Spectrum Access System (SAS) Dynamically assigns PAL channels and GAA frequencies Controls the interference environment (e.g. border areas, transmission powers, etc.) and enforces exlusion zones to protect higher priority users CBSD users must register with SAS and send certain information (e.g. geolocation) to the SAS SAS directs CBSDs to move their transmission to another channel or stop operation on-demand in a reasonal Interference reporting? Accuracy and security SAS administrator to collect reasonable fees from PAL licensees and GAA users 09/05/2014 9 Conclusions US three-tiered sharing model consists of three hierarchy layers where sharing is governed with a Spectrum Access System (SAS). Different level of protection. Similarities to European two-tier LSA concept. Finland-US collaboration projects (WiFiUS virtual institute) is an important tool for information exchange on the cutting edge sharing models US three tier model vs. LSA (vrt. CDMA vs. GSM) 09/05/2014 10 TECHNOLOGY FOR BUSINESS