过渡联邦陆地移动无线电系统提高了频谱效率

WORKING GROUP 4FINAL REPORT Transition of Federal Land Mobile Radio Systems to IncreaseSpectrum Efficiency December 10, 2008 TABLE OF CONTENTS 1.INTRODUCTION............................................................................................................. 12.WG4 ACTIVITIES........................................................................................................... 43.SCOPE............................................................................................................................... 54.TECHNOLOGY SOLUTIONS TO IMPROVE SPECTRUM EFFICIENCY........... 54.1Technology Solutions to Improve Federal LMR Spectrum Efficiency............................ 5Trunking Efficiencies........................................................................................................ 6Shared Networks Case Studies ........................................................................................ 8Technology Transition Challenges and Opportunities................................................ 10Long Term Technology Solutions.................................................................................. 12SummaryTechnology Solutions to Improve Federal LMR SpectrumEfficiency ..................................................................................................................................... 154.2 Evolution to Wireless Broadband Technologies165.REALISTICUSEOFCOMMERCIALNETWORKS FORA GOVERNMENT OR PUBLIC SAFETY ENVIRONMENT ................................. 236.CREATING INCENTIVES FOR TRANSITIONS..................................................... 247.SUMMARY OF RECOMMENDATIONS ………………………………..…….……25 WORKING GROUP 4 (OUTLINE & DRAFT V1) REPORT: Transition of Federal Land Mobile Radio Systems to Increase Spectrum Efficiency 1.INTRODUCTION In May 2003, the “Spectrum Policy Initiative” (“SPI”) was established which called for “acomprehensive review of spectrum management policies . . . with the objective of identifyingrecommendations for revising policies and procedures topromote more efficient and beneficialuse of spectrum without harmful interference to critical incumbent users.”1Shortly thereafter,the President also articulated a national goal — the universal affordable access to broadbandtechnology.2 The SPI directed the Secretary of Commerce, after consultation with other agencies and publicmeetings, to prepare reports with recommendations for: •Facilitating a modernized and improved spectrum management system;•Identifying policy changes that would create incentives for more efficient andbeneficial use of spectrum,•Encouraging scientific research and developing methods for streamlining thedeployment of new and innovative technologies, while preserving national security,homeland security, and public safety;•Addressing the spectrum needs associated with critical government functions, such asnational security, homeland security, and public safety.3 These reports were released in June 2004 and, among other things, recommended: •Establishing a Commerce Spectrum Management Advisory Committee (“CSMAC”)“to advise the Assistant Secretary of Communications and Information, Departmentof Commerce on needed reforms to spectrum policies and management to enable theintroductionof new spectrum dependant technologies and services includingexpediting America’s access to broadband services;4 •Creating a Test-Bed for the purpose of evaluating technologies and methods forimproving spectrum sharing between federal government and non-federal governmentusers;5and•Facilitating interoperability of first responder communications and other governmentcommunications.6 In November 2004, the heads of executive departments and agencies were directed to implementthe recommendations from the June reports. In response, the Secretary of Commerce establishedthe SMAC and instructed the committee to focus on, among other things: Expeditingthe introduction of wireless broadband services;addressinggovernmentaland commercial concerns regarding public safety spectrummanagement issues; . . . assisting in efforts to encourage the establishment oflong-range spectrum planning processes; . . . gathering input on the latesttechnology and market trends; examining the latest radio-frequency research anddevelopment outputs; and evaluating the value of spectrum to the public andprivate sectors.7 At the February 8th2008 CSMAC meeting, new working groups were formed. Working Group 4was given the following mandate: Analysis and Preparation of Recommendations Concerning the Transition ofFederal LandMobile Radio Systems to Increase Spectral Efficiency Background NTIA’s Office of Spectrum Management (OSM) and Institute for Telecommunication Science(ITS) have conducted a series of reports on Federal government management and actual usage ofselected Federal land mobile radio (LMR) bands.These reports led to the conclusion thatsignificant improvements in spectrum efficiency in Federal LMR bands could be achi