9 ms·
LTE Base Station Software
- bootcat 8y agoIs the code available for this ? This has been out from bellard's site for some time.
- swatkat 8y agoSource isn't available; software has been commercialized: https://www.amarisoft.com/products-lte-ue-ots-sdr-pcie/#network https://www.amarisoft.com/products-lte-ue-ots-sdr-pcie/#netw...
- k0ngo 8y agoI'm a big fan of Fabrice Bellard, but there are other eNB and UE implementations that are fully open source, like OpenAirInterface[1] and srsLTE[2] [1] http://www.openairinterface.org http://www.openairinterface.org [2] https://github.com/srsLTE/srsLTE https://github.com/srsLTE/srsLTE
- presscast 8y agoI'd be really interested in seeing a tutorial for how to set this up.
- pgorczak 8y agoWith srsLTE you just need to run the srsenb and srsepc processes with their example configuration files while having a compatible SDR connected. If you want to attach your own phone you need to have the right credentials of course but an srsUE (also with the example config) would happily connect.
- presscast 8y agoI appreciate the comment, but I think I need a much lower-level tutorial! I know practically nothing about SDRs or LTE.
- pgorczak 8y agoAnd a few more pure EPC implementations like NextEPC [1] and Pycrate/corenet [2–3]. The srsLTE eNB works pretty well with NextEPC for me :) [1] https://github.com/acetcom/nextepc https://github.com/acetcom/nextepc [2] https://github.com/P1sec/pycrate https://github.com/P1sec/pycrate [3] https://github.com/mitshell/corenet https://github.com/mitshell/corenet
- microcolonel 8y agoWhat I'd like to see is an open baseband implementation, including calling out to more efficient DSP hardware, and some more substantial hardware frontend. There is surely a patent minefield involved in using something like that, but it'd be nice to have something in the open which you could at least license those patents to integrate into a product, and provide a greater degree of certainty as to what's inside to your customers.
- pabs3 8y agoThe Osmocom folks have a GSM baseband project. They are also looking into reverse engineering the Quectel LTE modems that run Linux. https://osmocom.org/projects/baseband/ https://osmocom.org/projects/baseband/ https://osmocom.org/projects/quectel-modems/ https://osmocom.org/projects/quectel-modems/
- deleted 8y ago[deleted]
- sleepydog 8y agoTo actually use something like this for transmission, would I need to obtain a license for use of the LTE radio bands?
- aaaaaaaaaab 8y agoOr just set up Faraday cage in your basement.
- deleted 8y ago[deleted]
- xfitm3 8y agoFemtocells operate legally, might be worth looking into what bands it uses.
- deleted 8y ago[deleted]
- jacob019 8y agoLTE-U would allow for LTE in unlicensed spectrum. Do any current devices support these bands? I would very much enjoy serving unlicensed LTE around my home. I wonder how much effort it would take to provide VoLTE over a SIP backend.
- exabrial 8y agoJust curious, does your handset super wifi calling? My parents live pretty far out in the country and were having reception issues. A few Ubiquiti wireless access points solved the problem
- apaprocki 8y agoNewly released iPhone XS supports LTE band 46.. anyone try that yet?
- walrus01 8y agoSeveral hardware manufacturers for LTE last mile fixed wireless, WISP equipment, have announced BTS and CPE equipment for LTE in unlicensed 5150-5850 MHz bands. Baicells and Telrad come to mind. It's not for around your home but as competition for things like the Cambium PMP450 platform and Ubiquiti's Rocket 5AC gen2 AP radios.
- CPAhem 8y agoYou'll need to add RF amplifiers on the transmit and receive paths along with antennas to make this work off the lab bench.
- excalibur 8y agoKind of concerning what other uses this could be put to. Doesn't seem like a big jump from here to a DIY stingray, soaking up all of the data from every cell phone within range. Of course, vacuuming up everything is probably a great way to get caught quickly. For nefarious purposes it would probably more useful to selectively target individual devices.
- vorpalhex 8y agoThose are definitely already a thing, unfortunately. https://hackaday.com/tag/cell-site-simulator/ https://hackaday.com/tag/cell-site-simulator/ https://www.evilsocket.net/2016/03/31/how-to-build-your-own-rogue-gsm-bts-for-fun-and-profit/ https://www.evilsocket.net/2016/03/31/how-to-build-your-own-...
- excalibur 8y ago> I’m not writing this post to help script kiddies breaking the law, my point is that GSM is broken by design and it’s about time vendors do something about it considering how much we’re paying for their services. Unfortunately they're unlikely to do much about it until the consequences of NOT securing their networks hit them in the wallet, which is maybe where the script kiddies come in.
- monocasa 8y agoIIRC, in LTE the devices verify the identity of the towers with a signature check now too.
- howard941 8y agoWow check out the prices for the hardware. By "wow" I mean I can't afford this. Clearly not the Amarisoft stuff where it doesn't even list the price, preferring that people contact them apparently knowing that I can't afford it. Are there any sub-US$500 hardware platforms for LTE play?
- jcims 8y agoEttus makes very high quality hardware but you pay for it. Looks like Lime Micro is a partner of Amerisoft, they have an SDR for $300 - https://www.crowdsupply.com/lime-micro/limesdr https://www.crowdsupply.com/lime-micro/limesdr The likelihood that it's going to work without substantial tinkering is pretty low.
- howard941 8y agoThank you very much for the link. Tinkering is precisely what I'd like to do with it, on the 70cm ham band if LTE is a bridge too far.
- jcims 8y agoHeads up, seems folks aren't having great luck with the Lime SDR for ham applications. Some comments in here - https://news.ycombinator.com/item?id=15301982 https://news.ycombinator.com/item?id=15301982 and here explaining why - https://www.reddit.com/r/LimeSDR/comments/71q2qk/thread_on_hackernews_regarding_sdr_with_several/ https://www.reddit.com/r/LimeSDR/comments/71q2qk/thread_on_h... A counterpoint in the comments here - https://www.youtube.com/watch?v=u2KK49sJ3L0 https://www.youtube.com/watch?v=u2KK49sJ3L0 caveat emptor i guess, good luck!
- xfitm3 8y agoHackRF comes to mind. You can occasionally find good deals on Ettus gear on eBay/forums/etc.
- myself248 8y agoHackRF is only half-duplex, and the turnaround time isn't fast enough to fake it. You'd need two.
- meuk 8y agoI usually love Fabrice Bellards stuff, but I have to admit that I don't really understand the how and why of this project.
- wolfgke 8y ago> I usually love Fabrice Bellards stuff, but I have to admit that I don't really understand the how and why of this project. The "why" should be clear here: make money (see Amarisoft's website: https://www.amarisoft.com/ https://www.amarisoft.com/ ).
- alxlaz 8y agoI used this several years ago (five or six, I think? Maybe more) with some of Ettus Research's USRPs. It's quite amazing. We used it for prototyping -- the gear wasn't (or we couldn't get it to be) fast enough to replace "real" LTE gear, but do bear in mind this was many years ago. But at the time, this was basically the best way to experiment with, and develop solutions for LTE, in a price range that was mostly affordable for a small company. I know cheaper options exist today, but I don't know much about them. And, of course, this warrants a shout out for Ettus Research's equipment. It's pricey but if you can afford it, or if you manage to strike a bargain, you'll love it. The higher-ups at the company I was working for at the time were kind enough to let me spend several evenings there using the equipment for my own hobby projects. I mostly used it with GNU Radio -- it worked without a glitch.
- gz5 8y agoI like this at concept level though am not qualified to dig into the internals. A use case could be eith CBRS (soon open in USA)? Add a neutral SAS and you have an IIoT solution with LTE type bandwidth, sans the monoploly telcos?