fallow field"Our goal is to put 1 gig speeds in our customers' hands no matter where they are on our network." CEO Randall Stephenson will begin quadrupling network capacity as soon as this year. John Donovan committed AT&T to deploy Gig LTE this year, 3x to 4x what they are running now. Most of AT&T's 4G network is running 2 bands and 2 antennas. Gig LTE is three or four bands, four antennas, and 256 QAM. 60 MHz allows adding 3 bands for a total of five. SKT, Korea's largest mobile carrier, is already testing five bands with Samsung. (pr below.) Verizon also has > 40 MHz of unused spectrum, enough to double their capacity.

"So you add it all up. We now have more than 60 megahertz of fallow spectrum that we're ready to light up

We'll be deploying all the bands simultaneously starting this fall when states begin to opt in to the FirstNet. The efficiencies we'll gain from climbing the tower once to put up multiple bands of spectrum, those efficiencies are significant. And we're going to see those cost savings and the network performance materialize immediately and then throughout the life of this multiyear buildout.We now have more than 60 megahertz of fallow spectrum  … our goal is to put 1 gig speeds in our customers' hands no matter where they are on our network." Randall Stephenson, Seeking Alpha

1 gig to all the cells is realistic. The standard radio for the transmitter site is now 4x4 antennas & four bands.  However, speeds are far lower behind walls and at the edge of the cells.  SoftBank in Japan is getting good results at the edge using Massive MIMO, but I'm not reading this as an AT&T plan to do Massive MIMO everywhere. That wouldn't be impossible; AT&T is in advanced testing with Blue Danube on an analog M-MIMO system. Randall's not an engineer so I wouldn't read too much into his words.

I also wouldn't infer from this comment a nationwide small cell network for AT&T. They are making a point of doing advanced testing and research, with all the pr and hype that goes along. Verizon plans a massive (~$20B) small cell build and AT&T has a plan to keep up if necessary.  Craig Moffett warns their finances are "over-stretched," making that a challenge. 

AT&T's Jim Cicconi convinced DC there was a spectrum crisis, now proven a myth.


SK Telecom Successfully Tests LTE-Advanced Five-Band Carrier Aggregation on its Commercial Network

- Demonstrates five-band CA as well as tri-band CA applied with 4×4 MIMO with Samsung Electronics ; Demonstrates LAA technology that supports peak data speeds of 1Gbps with Ericsson at MWC 2017


SK Telecom 

26 Feb, 2017, 21:14 ET

  • BARCELONA, Spain, Feb. 26, 2017 /PRNewswire/ -- SK Telecom (NYSE: SKM) today announced that successfully tested LTE-Advanced (LTE-A) five-band carrier aggregation (CA)* on its commercial network

    *SK Telecom's bandwidth resources as of February 2017: 10MHz bandwidth in the 800MHz band, 20MHz bandwidth in the 1.8GHz band, 10MHz bandwidth in the 2.1GHz band, 10MHz + 20 MHz bandwidths in the 2.6Ghz band

    Since June 1, 2016, SK Telecom has been providing 500Mbps LTE-A Pro service by applying 256 QAM technology to its tri-band LTE-A CA network. Also, the company has acquired additional spectrum in the 2.6GHz band in May 2017, securing the basis for LTE-A five-band CA.


    In addition, SK Telecom has successfully demonstrated the application of MIMO to its tri-band CA network, thereby securing the capability to provide 900Mbps data speeds.

    With the application of 4X4 MIMO - a technology that doubles the transmission speed - to a 20MHz bandwidth of a frequency band, users will be able to download data at maximum rate of 400Mbps per frequency band.

    SK Telecom and Samsung Electronics are demonstrating this LTE-A Pro technology at Samsung booth during the MWC period, and plan to commercialize it within the first half of 2017.

    "Through the demonstration of LTE-A Pro with SK Telecom, we have proven that it is not long before we realize the commercialization of 1Gbps mobile communication, a dream speed in LTE," said Park Dong-soo, Executive Vice President of the Network Business at Samsung Electronics. "We will lead the advancement of mobile technologies toward the very last stage of LTE evolution and secure a bridgehead into the 5G era."

    Meanwhile, SK Telecom also announced that it, together with Ericsson, successfully demonstrated Licensed Assisted Access (LAA), the technology that uses unlicensed spectrum together with licensed spectrum for 4G LTE radio communication. By aggregating 80MHz in licensed and unlicensed spectrum and applying 4X4 MIMO technology, peak data rates of 1Gbps is achievable. The two companies are demonstrating the technology at Ericsson booth during MWC 2017.

    Per Narvinger, Head of Product Area Network Systems at Ericsson said, "With LAA, subscribers will be able to enjoy an even better LTE experience as unlicensed spectrum is used to boost data speeds. The LTE and Wi-Fi users will coexist in a fair way in the unlicensed bands and end users will benefit in indoor as well as outdoor environments."

    "With continued advancement of UHD video and virtual reality technology, there is growing a need for faster mobile telecommunications services," said Park Jin-hyo, Senior Vice President and Head of Network Technology R&D Center of SK Telecom. "SK Telecom will pursue ceaseless innovations in not only 5G, but also in LTE-A Pro so as to provide our customers with the world's best mobile experience."

    About SK Telecom

    Established in 1984, SK Telecom is the largest mobile operator in Korea by both revenue and number of subscribers. As of December 2016, the company holds around 50 percent of the market, with 29.60 million mobile subscribers including 21.1 million LTE subscribers. It has reached KRW 17.092 trillion in revenue in 2016.

    SK Telecom has led the advancement of mobile technologies ranging from 2G to 4G, and is currently setting important milestones in its journey to 5G. The company is not only leading innovation in the field of mobile network, but also providing IoT, media, home and platform services.

    SK Telecom is determined to play a significant role in the Fourth Industrial Revolution by achieving innovations and promoting shared growth with other players in the industry.


    dave ask


    The 3.3-4.2 spectrum should be shared, not exclusively used by one company, concludes an important U.S. Defense Innovation Board report. If more wireless broadband is important, sharing is of course right because shared networks can yield far more

    It does work! Verizon's mmWave tests over a gigabit in the real world. 
    The $669 OnePlus 7 Pro outclasses the best Apples and probably the new Galaxy 10 or Huawei P30 Pro. Optical zoom, three cameras, liquid cooling, Qualcomm 855 and more.
    Korea at 400,000 5G May 15. Chinese "pre-commercial" signing customers, 60,000-120,000 base stations in 2019, million+ remarkable soon. 
    5G phones Huawei Mate 20, Samsung Galaxy 10, ZTE Nubia, LG V50, and OPPO are all on sale at China Unicom. All cost US$1,000 to 1,500 before subsidy. Xiaomi promises US$600.
    Natural monopoly? Vodafone & Telecom Italia to share 5G, invite all other companies to join.
    Huawei predicts 5G phones for US$200 in 2021, $300 even earlier
    NY Times says "5G is dangerous" is a Russian plot. Really.
    Althiostar raised US$114 million for a virtual RAN system in the cloud. Rakuten, Japan's new #4, is using it and invested.
    Ireland is proposing a US$3 billion subsidy for rural fibre that will be much too expensive. Politics.
    Telefonica Brazil has 9M FTTH homes passed and will add 6M more within two years. Adjusted for population, that's more than the U.S. The CEO publicly urged other carriers to raise prices together.
    CableLabs and Cisco have developed Low Latency XHaul (LLX) with 5-15 ms latency for 5G backhaul,  U.S. cable is soon to come in very strong in wireless. Details 
    Korea Telecom won 100,000 5G customers in the first month. SK & LG added 150,000 more. KT has 37,500 cells. planning 90% of the country by yearend. 
    The Chinese giants expect 60,000 to 90,000 5G cells by the end of 2019.
    China Telecom's Yang Xin warns, "Real large-scale deployment of operators' edge computing may be after 2021." Customers are hard to find.
    Reliance Jio registered 97.5% 4G availability across India in Open Signal testing. Best in world.

    More newsfeed


    Welcome On Oct 1, 2019 Verizon turned on the first $20B 5G mmWave network with extraordinary hopes. The actual early results have been dismal. Good engineers tell me that will change. 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.