The Telecommunications Industry Association (TIA) has surveyed the 5G views of 31 mobile network operator executives from around the world. The findings were recently published (registration required). It’s implied that the survey used 5G in the most common sense — that of 3GPP, which has targeted completion of 5G specifications for 2020. (No one owns the term 5G — Verizon has its own 5G specifications, at least for now.)
A recent meeting of the Association of Federal Communications Consulting Engineers (AFCCE) hosted Dr. Andrew Clegg from Google. He updated the group on the status of the 3550-3700 MHz Citizens Broadcast Radio Service (CBRS). Google has been an active proponent, including through work in the Wireless Innovation Forum (WinnForum), which is developing spectrum-sharing standards.
The mobile vendor community reminds us that LTE Broadcast exists and could get traction any day now. In a January 30 update (registration required) The Global Mobile Suppliers Association (GSA) puts the best light on trials that haven’t quite transitioned to a business.
Straight Path Ventures today filed an application and supporting exhibits for an experimental license to support the development of “radios that can support 5G fixed and mobile services in the 39 GHz band (38.4 – 40.0 GHz).” Straight Path Ventures is affiliated with Straight Path Spectrum, which recently agreed to pay a $100 million civil penalty in a consent decree with the FCC. Straight Path announced a demo of 39 GHz technology last October.
As part of his master’s thesis, a student has scraped experimental license information from the FCC’s website, constructed a database, and mined it for the years 2007 to 2016. Pedro J. Bustamante, provide a summary of experimental activity focussing on the years 2007-2016.
On November 24 Google filed an application with the FCC for a two-year experimental license to conduct nationwide testing in the 71-76 and 81-86 GHz millimeter-wave bands. The application consists of a form and supporting exhibit. As is usual with Google, the version of the exhibit made available to the public is redacted, but there’s enough there to infer that that this involves high-altitude airborne testing – perhaps connected to Project Loon or to solar-powered drones emerging from Google’s Titan Aerospace acquisition.
In a November 20 FCC filing, the Wi-Fi Alliance reported on recent meetings with FCC staff on the subject of Wi-Fi/LTE-U coexistence. The Alliance says consensus was reached on the following points at its November 4 Coexistence Test Workshop:
- The LTE-U specification can be further refined to provide greater clarity, and recent updates to the specification are a good step forward
- A broader set of test scenarios than currently exists is likely necessary to test LTE-U’s fairness to Wi-Fi
- Stakeholders are committed to collaborating within Wi-Fi Alliance to develop an industry agreed test regimen for LTE-U devices
A follow-up workshop is scheduled for the week of February 8.
In LTE-U, different companies can come away with different views of the same event. We’ll see if these consensus points hold.
The Global mobile Suppliers Association (GSA), representing mobile industry vendors, has commissioned a report on opportunities in LTE broadcasting. Prepared by a UK business consultancy, it’s part marketing document making a case for impressive growth in the LTE Broadcast business, which in turn makes it a useful sales tool for GSA members.
Interference arguments at the FCC would become more objective and less dependent on wordplay under a proposal by the FCC’s Technological Advisory Council (TAC).
Risk-informed interference assessment is a quantitative methodology intended to draw out the trade-offs between risks and benefits of new services. By using it interference assessments would move from, in the words of a TAC report, “What’s the worst that can happen?” to “What can happen, how likely is it, and what are the consequences?”
IEEE 802 and 3GPP are working together more on coexistence of Licensed Authorized Access (LAA) and Wi-Fi. Since November, each group has made a presentation to the other. There’s been an exchange of liaison statements, the latest on March 18 when IEEE 802 sent 3GPP two statements containing several requests and recommendations.
On October 13 Google filed two experimental radio applications with the FCC. The first seeks permission to test in the 3.5 GHz band in Mountain View, California and in suburban Washington D.C. The second is for testing in the 5.8, 24, 72, and 82 GHz bands in Mountain View and San Mateo County, California. The applications are redacted. Most technical detail is unavailable, but here’s what’s visible.
Google has applied to the FCC to conduct “airborne” testing of data over millimeter-wave frequencies in Northern Nevada. I saw the frequencies and thought this was another test of millimeter-wave radar for automatic cruise control; Google has applied to test that several times since 2011. The emission designators for the current transmissions, however, contain the symbols D1D; that’s data, not radar. An application to the FCC to test millimeter-wave data is a first for Google.
Google has filed an application with the FCC to conduct drone tests in New Mexico. The company has sought confidential treatment of its application form and exhibits. All we have to go by now is one exhibit that’s been redacted for public consumption. Google provides some detail, and we can try to infer some more.