Maya WileyMaya Wiley could torpedo LAA"Coverage is at signal strengths below -72 dBm and down to signals as low as -90 dBm," New York City Counsel Maya Wiley tells the FCC and standards groups. We (I'm a New Yorker) are demanding that Verizon's LTE in WiFi spectrum not interfere with New York's plan to connect everyone, starting with 7,500 free gigabit Kiosks. Verizon's LTE proposal - now a subject of controversy in 3GPP - specifies that LTE-U will choose an unused channel if available. This data raises the question of "What is an unused channel?" I infer that lowering the detection threshold will probably be necessary.

Technology is moving fast; rules are changing slowly unless the change has a powerful patron. New York's petition has implications worth exploring.Harold Feld has pointed to changes in wireless rules that improve performance without undue interference. His ideas seem sensible to me. I'm presenting here the NYC claims and will be asking experts for opinions in a follow-up article.

"LinkNYC will provide strong coverage at a minimum of 150 feet from a kiosk. The initial links are providing coverage up to 400 feet in some cases, including down side streets, which means many more people in many more parts of the city will be able to take advantage of the system's seamless handoff facility. That scale of consistent and abundant connectivity has the potential to drive enormous innovation for the city. Based on initial analysis, that additional coverage is at signal strengths below -72 dBm and as low as -90 dBm."  

LinkNYC articles

Any wireless technology deployed in a band that provides broadband access o millions must incorporate the basic protocols for fair sharing … We remain concerned about the lack of coexistence mechanisms for lower level Wi-Fi signals. …

Ensure that the specification fully protects such signals.  Such Wi-Fi signals are necessary to deliver solid broadband access to millions of the city's residents and visitors. …                                                                                                   

Sincerely, Maya Wiley, Counsel to the Mayor

New York City is credible enough I'm comfortable reporting their point of view, especially as I found numerous examples of successful connections at low ratios. I don't know enough to evaluate how low the level should go. I'm reaching out to all the parties for more technical details, as well as some senior experts. Better information needed  I went ahead with this article because the issue is pressing at the FCC and 3GPP.

dave ask

Newsfeed

Samsung has delivered 5G chip samples to BBK's Oppo and Vivo, the #2 or #3 phones manufacturer. Samsung is facing off against Qualcomm in the 5G market. Qualcomm is unfazed and reportedly moving the production of their next chip from TSMC to Samsung. 

Sprint's 2.5 GHz 5G is delivering 100-500 megabit downloads consistently. That bodes well for China Mobile, using the same frequencies.

Vodafone, BT, and soon 3UK are delivering modestly sized 5G mid-band networks. Vodafone is also live in Spain and Italy. 

Sunrise in Switzerland is using 5G mid-band for fixed wireless in rural areas.  

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Welcome  1,000,000 Koreans bought 5G in the first ten weeks. The demand is there, and most of the technology works. Meanwhile, the hype is unreal. Time for reporting closer to the truth.

The estimates you hear about 5G costs are wildly exaggerated. Verizon is building the most advanced wireless network while reducing capex. Deutsche Telekom and Orange/France Telecom also confirm they won't raise capex.

Massive MIMO in either 4G or "5G" can increase capacity 3X to 7X, including putting 2.3 GHz to 4.2 GHz to use. Carrier Aggregation, 256 QAM, and other tools double and triple that. Verizon sees cost/bit dropping 40% per year.

Cisco & others see traffic growth slowing to 30%/year or less.  I infer overcapacity almost everywhere.  

Believe it or not, 80+% of 5G (mid-band) for several years will be slower than good 4G, which is more developed.