2015年csmac过渡共享小组委员会最终报告草案

Transitional Sharing Subcommittee (DRAFT) FINAL REPORTFebruary 5, 2015 Table of Contents Executive Summary.................................................................................................................. 31Introduction........................................................................................................................ 42Background........................................................................................................................ 43Scope of Work, Analysis and Results............................................................................... 44Recommendations.............................................................................................................. 65Conclusions......................................................................................................................... 7Appendix 1: Working Group Participants............................................................................ 8Appendix 2: AWS-1 1.7 GHz Transitional Sharing Process Flow...................................... 9Appendix 3: Generalized Portal Structure.......................................................................... 10 Executive Summary The Transitional Sharing subcommittee was intended to pick up where the CSMAC AWS-3WGs left off. The subcommittee’s goal was to establishguidelines and a framework to allow forcoordinated operation within protection zones. While the subcommittee met several times and developed a set of recommendations, its workwas overtaken by events related to the AWS-3 auction and the work of other subcommittees. Nonetheless, the Transitional Sharing subcommittee does recommend that the NTIA shouldstudy the subcommittee’s recommendationswith the goal of further consideration as necessary. 1Introduction This subcommittee was suggested following the Commerce Spectrum Management AdvisoryCommittee’s (CSMAC) analysis of ways to facilitate the implementation of commercial wirelessbroadband systems in the AWS-3 bands (1695-1710 MHz and 1755-1780 MHz). Thesubcommittee met several times and developed a set of questions, areas of study, an approachand a set of draft recommendations. However, the subcommittee felt that its work was somewhat overtaken by several events andoutside activities and decided to suspend its activities with the recommendations provided. 2Background Most of the efforts of the five CSMAC Working Groups established to study sharing betweencommercial wireless broadband and Federal systems in the AWS-3 1755-1850 MHz bandfocused on the development of sharing criteria and protection zones sufficient to inform theFCCs AWS-3 rulemakings.1Transitional Sharing was proposed as the next step in the existingCSMAC work. The goal would be to study and recommend how to implement the future workdescribed in all of the WGs (or at least WG4 & WG5) specifically with respect to coordinatedoperation in protection zones. The committee members are listed in Appendix 1. 3Scope of Work, Analysis and Results The subcommittee developed the following set of questions and actions:What analysis methods should be used to govern transitional sharing? Methods differ based upon type of federal system. Need to identify various systems andsuggest study on sharing methods.How can analysis tools be used to determine the locations and frequencies where two ormore specific operations could potentially co-exist at the same or different times withoutdirect negotiation among the parties?Need to describe the process to include steps necessary for transitional sharing. See flowdiagram from AWS-1 (Appendix 2).Would these tools be based on predictions and without direct negotiation among theparties?How can the process involve all stakeholders to ensure the analysis methodologies andinteractions meet all needs? Stakeholders include both regulators and spectrum users. How could such tools be used to better inform or help facilitate direct negotiations amongthe parties?What are the use cases and baseline requirements? How do we collect this information?For agencies that do not have adequate staff resources how would such criteria,methodologies, processes and procedures minimize direct negotiations?Costs are difficult to nail downOMB needs to consider sharing techniquesWhy would federal users be willing to rely on new tools and approaches that they havenot been willing to use thus far?Consider LTE techniquesMaintain continued dialog and testingProvide a fall-back/stop buzzer in case of interferencePromote testing of new sharing techniquesViability of approaches will depend upon length of transition The subcommittee proposed the following areas of study:Protection Zone determination and analysis Applicable coordination processes and proceduresAnalysis methodologies & toolsCoordination portal(s)Obtaining dataMarket prioritizationHow to resource the transitional sharing effortsRoles (regulators, agencies, licensees, others) The sub