Telecommunications Research and Engineering at the Communications Technology Laboratory of the Department of Commerce Meeting the Nation's Telecommunications Needs (2015) / Chapter Skim
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4 National Telecommunication Research Needs and the Future Role of the Boulder Telecommunications Laboratories
4 National Telecommunication Research Needs and the Future Role of the Boulder Telecommunications Laboratories
Pages 19-32
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From page 19... ...
Other auctions have raised significant funds as well, including $13.7 billion for the AWS-1 auction in 2006 and $18.9 billion for the 700 MHz auction in 2008. The rapid rise in the price of spectrum is due to the exponential increase in the number of Internetconnected wireless devices and the rising data demands for the applications that run on these devices, combined with the constrained supply of viable spectrum for these devices.
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From page 20... ...
The Boulder telecommunications laboratories are among the few government facilities with the necessary skills and specialized equipment capable of performing the measurement and analysis needed for transitioning spectrum from exclusive federal use to shared commercial use. They have extensive experience in propagation and interference measurements and analyses and better access to federal facilities (especially classified or controlled facilities)
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From page 21... ...
Naturally, both sides are competing for "fair use" of this 5 GHz unlicensed spectrum and are making claims regarding fair sharing or the lack of it, many of which are speculative and without rigorous science, engineering, and practical, realistic testing mechanisms in place. The Boulder telecommunications laboratories could provide this service for the public good.
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From page 22... ...
Examples of High-Profile Failures in Spectrum Allocation The FCC Technological Advisory Council's white paper on spectrum efficiency metrics1 summarized nine high-profile failures, including the following: • The prospect of overload interference to legacy Satellite Digital Audio Radio Service (SDARS, aka SiriusXM) receivers from mobile devices in the Wireless Communications Service (WCS)
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From page 23... ...
• Receiver performance relative to adjacent channel and intermodulation characteristics was a major element in the issue of re-banding the 800 MHz spectrum to avoid interference between Nextel and public safety operations on interleaved channels. • LightSquared's proposed deployment of ancillary terrestrial component base stations as part of a hybrid terrestrial–satellite service has raised significant concerns about potential harmful interference to the GPS service operating in the upper-adjacent spectrum due to the potential for receiver overload -- that is, power transmitted in LightSquared's licensed frequencies causing degradation of GPS devices that did not filter out this energy sufficiently well.
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From page 24... ...
Communications Technology Laboratory (CTL) , the National Telecommunications and Information Administration's (NTIA's)
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From page 25... ...
11 Federal Communications Commission, Notice of Inquiry, FCC 14-154, In the Matter of: Use of Spectrum Bands Above 24 GHz For Mobile Radio Services; Amendment of the Commission's Rules Regarding the 37.0-38.6 GHz and 38.6-40.0 GHz Bands; Implementation of Section 309(j) of the Communications Act -- Competitive Bidding, 37.0-38.6 GHz and 38.6-40.0 GHz Bands; Petition for Rulemaking of the Fixed Wireless Communications Coalition to Create Service Rules for the 42-43.5 GHz Band, October 17, 2014, https://apps.fcc.gov/edocs_public/ attachmatch/FCC-14-154A1.pdf.
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From page 26... ...
In the future, it will be important for the Boulder telecommunications laboratories to have expertise and resources to understand dense, interference-limited networks that operate in both licensed and unlicensed frequency bands. The distinction between base stations or access points and terminals will be blurred in the future with the proliferation of personal "MyFi" and "Sat-Fi" access points as well as Wi-Fi tethering using smartphones.
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From page 27... ...
The committee sees a logical role for the Boulder telecommunications laboratories to engage in the area of spectrum monitoring and enforcement, such as defining methods of measurement, assessment, and thresholds. New Spectrum-Efficient Technologies Emerging technologies that have particular relevance to the mission of ITS and CTL include the following: • Massive MIMO, which combine use of millimeter wavelength devices and MIMO to create extremely large numbers of antennas forming small beam-forming antenna arrays, can be used to enable very-high-performance broadband communications systems currently being explored for use in fifth-generation (5G)
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From page 28... ...
Wireless Communications One of the biggest technical challenges with cellular and Wi-Fi-equipped devices (such as smartphones, tablets, and laptops) is battery life, which is even more of a challenge with IoT devices that have much smaller batteries and are expected to operate for years.
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From page 29... ...
Interoperability standards are an essential ingredient to today's dynamic and growing online economy. These standards are developed in voluntary standards development organizations, such as the Institute of Electrical and Electronics Engineers, IETF, the International Organization for Standardization, and the International Telecommunication Union, by the stakeholders interested in designing, building, and deploying networks of all types -- from long-range, high-capacity optical networks (e.g., IEEE 802.3 400 gigabit per second Ethernet)
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From page 30... ...
A research agenda should consider the most efficient use of the laboratories' resources and develop an effective organizational structure and funding strategy to ensure research goals are met and resources are effectively used. RECOMMENDATION: The Boulder telecommunications laboratories should expand their visible leadership role by providing technical expertise for agencies and policy makers and by providing objective scientific expertise.
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From page 31... ...
Appendixes
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