Slashdot Mirror


FCC Opens More Spectrum for WISPs

flirzan writes "Today the FCC announced that they will be opening up new spectrum for use in wireless broadband applications. The new spectrum will run from 3650-3700 Mhz, and requires that licensees register all system base stations. This is great news for wireless ISPs everywhere, as it will make interference avoidance/mitigation much easier. Licenses will run 10 years, and are renewable and transferable. No word yet on how much the licenses are expected to cost or when they'll be available."

31 of 98 comments (clear)

  1. what effect will that have by Transient0 · · Score: 4, Funny

    on the Mana Drain when they detonate?

    or their lumber collecting abilities?

  2. Do I have to? by CDOS_CDOS+run · · Score: 2, Funny

    Does this mean I have to take my current 3650-3700 Mhz base down?

  3. They open the spectrum up for WASPs? by Anonymous Coward · · Score: 2, Funny

    I knew the FCC were a bunch of uptight fundamentalist whiteys, but geez.

  4. good news by kebes · · Score: 3, Interesting

    This is good news for companies making mobile devices with lots of storage. After all, that storage is not very useful if there isn't infrastructure (i.e.: bandwidth) available to transfer data easily.

    This might also help out community wireless attempts, since at least one part of the technology is being standardized, and the licenses are rather long (10 years).

  5. Two questions by mcc · · Score: 2, Interesting
    Due to my current location I cannot view the PDF.
    1. How many WISPs will a single area be able to support, or more specifically, what will be the maximum number of WISP licensees for a given area?
    2. Are there limitations on the number of WISP licenses you may hold? That is to say, would it be possible for Clear Channel or SBC or subsidiaries of either to buy up all the WISP licenses for a certain area and then just sit on them, blocking any competition from entering the market?
    1. Re:Two questions by kebes · · Score: 5, Informative

      For those who can't get the PDF, here it is in plain text:

      FCC OPENS ACCESS TO NEW SPECTRUM FOR
      WIRELESS BROADBAND IN THE 3650 MHZ BAND

      WASHINGTON, D.C. - Today, the Federal Communications Commission (FCC or
      Commission) adopted rules to open access to new spectrum for wireless broadband in the 3650-3700
      MHz band (3650 MHz). The Commission adopted a hybrid approach that draws from both the
      Commission's unlicensed and licensed regulatory models and provides for nationwide, non-exclusive
      licensing of terrestrial operations in the band utilizing technologies employing contention-based
      protocols. This streamlined licensing mechanism with minimal regulatory entry requirements will
      encourage multiple new entrants and stimulate the rapid expansion of wireless broadband services --
      especially in rural America -- by Wireless Internet Service Providers (WISPs) and other entities with
      limited resources. The Commission also provided an opportunity for the introduction at 3650 MHz of a
      variety of new wireless broadband technologies, such as Wi-Max, into the band.

      Under the Commission's approach, there is no limit on the number of licenses that can be
      granted, and each licensee will be authorized to operate on a shared basis with other licensees on all 50
      megahertz of the band, subject to restrictions in geographic areas occupied by grandfathered Fixed
      Satellite Service (FSS) and Federal Government stations. Licensees will also be required to register all
      system base stations electronically with the Commission. Base station registration will enable licensees
      to locate each other's operations and will facilitate protection of grandfathered stations from interference.
      This type of licensing and registration will enable the Commission to monitor the use of this spectrum as
      new technologies and services develop.

      The Commission found that the public record developed in this proceeding supports multiple
      users sharing this spectrum through the use of "contention-based" protocols to minimize interference
      among fixed and mobile operations. New fixed and mobile stations will therefore be required to use
      contention-based protocols, which will reduce the possibility of interference from co-frequency operation
      by managing each station's access to spectrum. The Commission concluded that this approach is a
      reasonable, cost-effective method for ensuring that multiple users can access the spectrum.

      The Commission gave all licensees the mutual obligation to cooperate and avoid harmful
      interference to one another. Mobile stations also will be required to positively receive and decode an
      enabling signal transmitted by a base station. The Commission determined that this approach will ensure
      that mobile stations operate within range of registered base stations, thereby avoiding interference to grandfathered FSS and Federal Government stations. Fixed stations will be allowed to operate with a
      peak power limit of 25 Watts per 25 megahertz bandwidth, and mobile stations with a peak power limit of
      1 Watt per 25 megahertz bandwidth.

      The Commission kept the existing allocations for the band, grandfathering previously licensed
      primary incumbent FSS earth station operations and three Federal Government radiolocation stations,
      entitling them to interference protection from new wireless licensees. To protect these incumbent
      operations, the Commission established circular protection zones around them - 150 km for FSS earth
      stations and 80 km for Federal Government stations - and prohibited new terrestrial licensees from
      operating within these zones unless they negotiate agreements with the incumbents. The Commission
      determined that new FSS stations should be allowed on a secondary basis and denied several petitions for
      reconsideration of an earlier decision in this proceeding that established the existing FSS, FS and MS
      allocations.

      The Commission also concluded that there should be no eligibility restrictions

    2. Re:Two questions by josecanuc · · Score: 2, Informative
      1. How many WISPs will a single area be able to support, or more specifically, what will be the maximum number of WISP licensees for a given area?

      There is not a limit on the number of licenses. This is a break in the usual FCC trend of limiting the nubmer of licenses given based on the number of "channels" that can be defined. They are doing this because of the requirement that users of this new band utilize technologies that would allow automatic interference remediation and channel-sharing techniques. This is how the current 2.4GHz ISM band operates.

      The fact that this will be a licensed service allows for higher powers. Fixed stations are allowed 25W per 25MHz of bandwidth, and mobile stations are allowed 1W per 25MHz of bandwidth. (I like this method of power limits, because in today's world of wide-banded radio technologies, this effectively attempts to cap the signal intensity on any frequency slice rather than total output power.

      2. Are there limitations on the number of WISP licenses you may hold? That is to say, would it be possible for Clear Channel or SBC or subsidiaries of either to buy up all the WISP licenses for a certain area and then just sit on them, blocking any competition from entering the market?

      This question is essentially moot given that there is no limit on the number of licenses available in one geographic location and that frequencies will be shared.

      I look forward to seeing how this will pan out in the consumer-gear market. 2.4GHz has been totally trashed because of the near-ubiquity of 802.11 services; a product of the unlicensed nature of the ISM band -- everyone can dump a signal out! (how's that for a runon sentence?)

      If the equipment for operating in this band is kept out of the "mass retail" market, this will end up being a great thing. It's when you get a million or so average-joes who may be good to average network operators, but who don't understand squat about RF collision domains that things really start to get mucked up.

    3. Re:Two questions by R2.0 · · Score: 2, Informative

      There is another factor. FCC regulations require that licensees actually use their licenses. Once a license is awarded, the licensee must construct facilities within a certain time and begin service within a certain time after that - in total, about 2 years.

      If a licensee doesn't use the frequency or hasn't constructed, the license effectively comes up for grabs on a first come-first served basis. This is called a "finder's preference," where whoever rats out the non-performing licensee to the FCC gets first dibs on the license.

      As such, if someone were to buy a license and just sit on it, it would only last a short time - the license can be snatched out from underneath them.

      --
      "As God is my witness, I thought turkeys could fly." A. Carlson
  6. Good Thing by Anonymous Coward · · Score: 3, Informative

    This is surely a good thing, WISP's are currently operating using the ISM and UNII bands with extremely low EIRP levels.

    The new rules are as follows:

    "Fixed stations will be allowed to operate with a peak power limit of 25 Watts per 25 megahertz bandwidth, and mobile stations with a peak power limit of 1 Watt per 25 megahertz bandwidth."

  7. How much of the spectrum is left by tecker · · Score: 3, Funny

    Just how much of the spectrum is left for the FCC to pass out. And who dictates the spectrum elsewhere? Not to sound all Anti-American but the fcc is not all powerful.

    Wait, are they?

    --
    Procrastinating life a way at a rapid rate of speed.
    1. Re:How much of the spectrum is left by MonMotha · · Score: 4, Informative

      For the upper bands, the local governments have quite a bit of say in how thigns are alloted due to the fact that those signals just don't go very far beyond line of sight under normal circumstances. There are some exceptions that are dictated by the ITU and the US pays attention to those. These exceptions are mostly for research quiet zones (and those are pretty small), non geo-sync sats, etc.

      The HF bands (which readily propagate around the world), VHF and lower UHF (which can propagate distances significantly beyond those you would expect) have some ITU regulations attached to them. The FCC does pay attention to these international regulations of the RF spectrum.

      The US also has agreements regarding allocations up in the microwave ranges along its borders with other nations to avoid interference.

  8. Wireless infrastructure spectrum by _ph1ux_ · · Score: 3, Informative

    There should be several calsses of spectrum for WIFI data transit.

    one spectrum range would be for station-to-station communications

    one spectrum can be for user-to-station communications

    one spectrum can be for user-to-user communications.

    I am not a wireless engineer, so i dont know what frequencies are suitable for for what distances etc, but you should have one range for high-bandwidth medium-long range. (such as the spectrums mentioned here)

    So multiple channels in a particular cell, in such a number of channels where you dont overlap channels in adjacent cells. (802.11[n])

    Next you would have less bandwidth, more available channels and medium range. Finally you would have short range, medium badnwidth limited channels.... (bluetooth etc)

    1. Re:Wireless infrastructure spectrum by div_2n · · Score: 2, Informative

      I am not a wireless engineer, so i dont know what frequencies are suitable for for what distances etc, but you should have one range for high-bandwidth medium-long range. (such as the spectrums mentioned here)

      To answer your question, the higher you go on the mhz chart, the more data you can push over the spectrum. Conversely, the lower you go on the mhz chart, the better you go through objects.

      Of the widely used channels:

      900 mhz -- low data, best for non-line of sight
      2.4 ghz -- high data, sensitive to objects (water especially)
      5.3 ghz -- higher data, very sensitive to objects
      5.8 ghz -- even higher data, even more sensitive to objects

      WISPS often already do what you suggest by using the 5 ghz spectrum for backhaul and 2.4 (and occasionally 900mhz) for client communications.

      2.4ghz is becoming quite crowded. I actually expect it possible 900mhz could see a revival because it is not crowded. The only downside is that it doesn't offer much throughput.

  9. Re:does this mean... by Stanistani · · Score: 2, Funny

    Not only that, if this sort of thing continues, I will be able to cook my food just by bringing it outside!

  10. Re:Prices by ka9dgx · · Score: 4, Insightful
    The key word here is "non-exclusive"... they're not treating it as property this time, more like the the town commons. If this works the way I think it will, there will be a low fee to cover administrative overhead, just like the Amateur Radio service.

    Nobody is going to pay millions of dollars to have to cooperate and share... millions are only payed when a monopoly is guaranteed.

    --Mike--

  11. Good. by detritus. · · Score: 3, Interesting

    Wireless Broadband Providers: You have your spectrum play-pen, now do yourselves a favor, and get the hell off the ISM bands with your 802.11x crap for your commercial endeavors. Thank you.

  12. Only 50 MHz of radio real estate by G4from128k · · Score: 4, Informative

    The total bandwidth seems small, only 50 MHz which is less than the 94 MHz of space available for 802.11b. Throw in the need for non-overlapping channels, interference, etc. and this version of wireless broadband will probably offer less bandwidth that original WiFi.

    I can only hope that the higher emitted power will let service providers boost SNR (rather than space-out the antennas further) to provide more digital bandwidth within their limited radio bandwidth allotment.

    --
    Two wrongs don't make a right, but three lefts do.
    1. Re:Only 50 MHz of radio real estate by geekee · · Score: 2, Interesting

      This band looks like it's more compatible with 902.16 than 802.11. 802.16 has a much higher SNDR than 802.11, and, therefore, you'll get more datat throughput, even with less bandwidth.

      --
      Vote for Pedro
  13. Re:A whole 50MHz chunk of bandwidth? by Ungrounded+Lightning · · Score: 3, Interesting

    A whole 50MHz chunk of bandwidth?

    What would -you- do with all of it?


    Three 14-MHz (70ish Mbps to nearby sites under good conditions) and one 7-MHz (35ish Mbps ditto) WiMAX base stations - times several antenna sectors, times several base stations in an array like cellphone sites.

    Or maybe split it differently (like 3 or 5 7MHz channels for cells and 2 or 1 14s for networking the cells) to allow better signal quality in the cells by preventing channel reuse for some distance behind the cell.

    You could (un)wire a whole city that way.

    --
    Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
  14. Lease vs. Sell by GrouchoMarx · · Score: 4, Insightful

    Isn't it interesting that when dealing with bands the huge companies don't want, the spectrum is licensed on a renewable basis, while spectrum that is particularly valuable (to the public that owns it) is sold out-right to big conglomerates?

    ALL spectrum should be licensed like this new band is supposed to be. Viacom can afford it, believe me.

    --

    --GrouchoMarx
    Card-carrying member of the EFF, FSF, and ACLU. Are you?

  15. more tinfoil by SpongeBobLinuxPants · · Score: 4, Funny

    The new spectrum will run from 3650-3700 Mhz

    Guess I'll need to add another layer to my tinfoil hat.

  16. For those that don't get the joke: by Gerad · · Score: 2, Informative

    It's a reference to a Night Elf unit from Warcraft III, called a Wisp.

    --
    Be the Ultimate Ninja! Play Billy Vs. SNAKEMAN today!
  17. Any news on UHF Spectrum? by bill_mcgonigle · · Score: 3, Interesting

    There was some talk a while back about allowing WISP's into unused UHF spectrum.

    Most rural areas have next to no UHF TV channels and very poor broadband availability. It was hoped this would take advantage of that reality by allowing good hill-following spectrum to be available for rural Internet users, on a renewable basis that would give preference to new UHF TV stations (as if).

    No jokes about pig porn, please.

    --
    My God, it's Full of Source!
    OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
  18. Re:Private Band by chill · · Score: 2, Interesting

    It specifies non-exclusive usage, meaning you can't stake out a section of geography as exclusively yours. Buy a chunk in an area with hopes of "building" later and you'll just lose your money.

    Non-exlcusive usage means the prices for the licenses should be low -- mostly "maintenance" fees. (Supply isn't really limited.)

    And at 25 Watts of power for fixed stations, it makes sense so they can build a database where people can look up fixed locations for coverage, etc.

    So lighten up.

    -Charles

    --
    Learning HOW to think is more important than learning WHAT to think.
  19. Ever hear of BRS (Broadband Radio Services)? by n9mdh · · Score: 3, Interesting

    The FCC regulates the Broadband Radio Services (BRS). This is (now) typically broadband internet access, and happens in from 2.495 GHz to 2.690 GHz, and uses spectrum formerly set aside for (oxymoron alert) wireless cable TV. You, too can get a license in this band for a $230 filing fee, today.

    There is another band, 3.400 GHz to 3.600 GHz that's also currently set up for licensed wireless data, a la wi-fi. I don't have a link to this service unfortunately.

    What the new announcement from the FCC adds to the party is something similar to GMRS or business band radios-- shared spectrum open only to licensed users. TFA mentions Part 90 as the section of rules that will cover this new spectrum. That's the same section of rules that covers business band radios (and whose licenses cost $100-ish). I would also expect frequency coordination to come into play at some point with this new service, just like you have with other Part 90 services. (Coordination tries to prevent harmful interference and squabbling.)

  20. Nobody has mentioned... by skogs · · Score: 2, Insightful
    the obvious things yet.

    What exactly is the expected propogation with 25watts at 3.xx Ghz? How far will it transmit information?

    How fast is any proposed standard for using this spectrum? Surely somebody had a plan, and submitted it with their request for spectrum. What is the standard and how fast is it?

    What are the channel allocations within that same proposed standard? While 50Mhz doesn't seem like a big spread, it is not difficult to actually engineer something that is selective enough to work on the half Mhz. That would allow 50 one way, and 50 another way.

    Overall I find this story leaves more questions asked than answered. When this is actually implemented in 4-7 years, will it revolutionize wireless, or simply be a bottleneck loosener?

    --
    Who is this that even the wind and the waves obey Him? Surely this computer must submit also!
    1. Re:Nobody has mentioned... by Wesley+Felter · · Score: 2, Interesting

      What exactly is the expected propogation with 25watts at 3.xx Ghz? How far will it transmit information?

      It's gotta be better than 1W at 5.8GHz that people are using now.

      How fast is any proposed standard for using this spectrum?

      WISPs will probably use 802.16, which can theoretically provide over 100Mbps in 50MHz.

      What are the channel allocations within that same proposed standard?

      It looks like there are none, so licensees can do whatever they want.

  21. Re:Private Band by Doc+Ruby · · Score: 2, Informative

    Actually, lots of other people have identified the specific problems this kind of licensing poses for low power apps, like WiFi mesh, that offer real local community value. Shortsighted dismissal of that conflict plays right into the hands of large corporate interests, like Intel's, which were protected by this process, despite lots of public opposition.

    --

    --
    make install -not war

  22. Big Deal by bananahead · · Score: 2, Insightful

    A 50Mhz channel in the 3Ghz space is not going to change the world of wireless. The spectrum won't propogate worth a crap and 50MHz is not enough to really solve bandwidth or channel interference issues. It will be as noisy as 2.4 and won't work as well.

    --
    A most overlooked advantage to owning a computer is if they foul up there's no law against wacking them around a bit.
  23. And just for fun... by bananahead · · Score: 2, Funny

    When the noise in your neighborhood gets to be too much for you with everyone having an access point, do the following: 1. Take the door off of your microwave oven. 2. Place in backyard. 3. Turn on for 20 seconds. 4. Remeasure You should find that you have the neighborhood to yourself (except for those annoying 802.11a people)

    --
    A most overlooked advantage to owning a computer is if they foul up there's no law against wacking them around a bit.
  24. Base stations performing local mastering functions by Ungrounded+Lightning · · Score: 2, Informative

    The key word here is "non-exclusive"... they're not treating it as property this time, more like the the town commons. If this works the way I think it will, there will be a low fee to cover administrative overhead, just like the Amateur Radio service.

    Nobody is going to pay millions of dollars to have to cooperate and share... millions are only payed when a monopoly is guaranteed.


    Unfortunately, some of the protocols (like WiMAX) assign timeslots. That means somebody arbitrates the timeslots. That somebody is the base station - or the station "performing the base station role". (When you're doing a WiMAX mesh it gets more complicated...)

    Notice that the FCC is licensing the base stations...

    The way I read this: WiMAX base stations need to perform local mastering functions in order to assign timeslots and subchannels in their region - while WiMAX non-base stations ("subscriber stations" in WiMAX standard-ese, but think of it as "the ordinary guys") defer administrative decisions to base stations. That means that, if you set up a contention-based protocol between base stations to divvy up bandwidth-authority in their vicinities, the base stations are in a position to cheat by asking for more than their share and the subscriber stations are not.

    So the FCC is requiring base stations to obtain a license. This means they can identify them and subject them to greater scrutiny. And it means they can revoke the license if they're found to be cheating, and bring charges and levy fines against any who are violating the terms of their license, as well as anyone who operates a base station without getting a license.

    This doesn't hamper people who want to set up a mesh of non-"base station" peers, provided they use a contention-based protocol that defers to any licensed base stations within range. No base stations & contention based means no license required.

    --
    Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way