Connection to Sprint 4G LTE
I am using the Sierra Wireless Tri-Fi with and external antenna on the Sprint network. I currently get 3G with an indicated 100% signal. When I set up the Tri-Fi for 4G Preferred, it attempts to connect to a 4G signal, which indicates as a 40 to 60% "good" signal. The RSRP is anywhere from -88 dBm to -90 dBm, and the RSRQ is -10. However, it never actually connects to 4G LTE despite repeated tries.
I know that Sprint is supposed to be rolling out 4G LTE in this area "soon." Is the good signal but no connection indicative of testing the 4G system? What can I do to connect to 4G?
Try 4G only mode.
4G Only acts the same as 4G Preferred.
New York, NY
On my Tri-Fi I'm seeing three networks, 3G, 4G WiMax and 4G LTE. I'm in midtown Manhattan, zip 10022, and I have LTE connectivity. However while the signal is strong, the download speeds are below Sprint's minimum average spec for LTE of 6mbps; specifically my LTE download speeds run between 2 and 3 mbps.
On the other hand, my WiMax is excellent at the moment. Here's a sample:
I think the explanation, in my case, is that while LTE is clearly here and strong, it's still being worked on, which is why it's performing so clearly out of spec. I suspect you have the same situation in your area.
For some reason, when I set my Tri-Fi to the LTE + WiMax mode it always picks LTE, even though WiMax is so clearly superior at the moment. So my preferred settings are 4G Preferred, WiMax Only, and I'm a happy camper.
The only asterisk is the upload speed. As some here are aware, for whatever weird annoying reason, Clearwire, which runs Sprint's WiMax network, capped their WiMax upload speed at 1.5 megs. So, whenever I need to upload something to my cloud or ftp site, I switch to LTE; my current LTE connection has upload speeds that actually exceed Sprint's maximum spec; Sprint's LTE upload specs are 2 to 3 megs speed whereas I normally get between 4 and 5 megs.
So, if you're in a WiMax area where the LTE is not yet officially released, I'd say forget LTE for the moment and just set your Tri-Fi to WiMax. Of course, if you're not, I guess you're out of luck.
|reply to tcassette |
If you don't mind, could you share what type of antenna you're using with the SW tri-fi and where you purchased from? Thanks.
I am using the Wilson Electronics 301124 Stamped Yagi Antenna from ErwinComp.com, with a Wilson 951120 RG58U Low Loss Foam Coax 10' Extension from Gototallywireless on Ebay, and an adapter cable for the Tri-Fi from Maxmostcom on Ebay.
Has this problem been resolved for you yet? I'm having very similar issues and am in the northern San Francisco bay area.
Have you checked your System Event Log on the tri-fi device?
I keep getting a connection error #138, which is a "Lower Layer Failure".
Have contacted millenicom and sprint with no help so far yet...
Thanks for any response...
I had the same issue. I purchased a tri-fi off ebay and for some reason it came with about 10 days to go on the plan. They guy I bought it from was fine with using the remaining time. I had the same issue. See my posting back in April:
»Tri-Fi won't connect 4G LTE?
What was strange is I could see from the logs that he had connected to LTE 4G fine and he confirmed it. I had excellent 4g signal in an area that shows as having good 4G coverage but it would just sit there trying to connect. As long as it was set to 4g preferred it would ignore 3G. If I forced it to use 3G that connected fine.
I had bought it with the intent of enabling it on Millenicom when I need it (I work from home and the local WiFi provider isn't real reliable) but haven't have a reason to sign up. I confess because I couldn't get it to connect while still on the guy's Sprint plan I'm concerned that it may not work when enrolled in a new Millenicom plan. I even called Sprint and got a helpful tech but he wasn't able to resolve the issue. The next step would have me to have the guy's account details and he wasn't willing to give them to me.
So, I would be very interested in others who have had this issue and if they ever resolved it.
|reply to cc |
I get the same error report in my log.
San Francisco, CA
|reply to gschenck |
Hey gschenck and tcassette- thanks for chiming in. I had actually come across your posting Â»Tri-Fi won't connect 4G LTE? when researching my problem. From what I've found, your case and tcassette's are the only information on this issue... and I could not post to your thread because it is over 90 days old.
My device was just purchased off of ebay, and it's original logs show quite a few of completed connections to lte. Then once I started trying to set it up and use it with millenicom, error #19 shows up, which is a "GSM Failure", and I think has to do with the device not having been recognized yet by the system. Then "LTE connection attempt failed with error 65535" popped up once, which I don't know what that error means. Then a lot of "LTE connection attempt failed with error 138" (Lower Layer Failure) show up. I still see the error 138 showing up.
I have actually been able to connect to 4g lte recently by going to a different location, which was in rohnert park, ca, so I know this device can actually connect. I was in my car and used ookla's speedtest app approx 10 times on my phone to check dl and upload speed. Weird thing was, download was something like 0.75mbps (!!??) and upload was 4.0-8.0mbps. Barely even 3G speeds on the download. Then on my way home I kept the device on. It disconnected and reconnected a couple of times, and by the time I got home it was still connected. I put it in the window of the front of the house (as is the normal spot for my devices, but is where the tri-fi won't normally connect 4g), and no data would transfer, but it was still connected with a good signal... something like -89dbm.
There's supposedly a tower less than a mile from my house, according to millenicom and sprint's people, but can't find it on any coverage maps... Also, it connected at the end of my driveway yesterday, but no data transfer...
While my device is either connected, or cycling between connecting and disconnecting 4g and giving error 138 in the logs, there is typically a good signal of -87dbm to - 91dbm for the 4g lte (no wimax here).
I just order a wilson sleek 4g v signal booster for the device in the hopes that it will make the connection happen. I will need it for some upcoming work in some remote places for my phone, so it's worth checking out.
Once I get the booster, or figure anything else out, I will post. Hopefully by monday. Thanks again for any responses - peace!
San Francisco, CA
|reply to gschenck |
....(deleted double post).....
|reply to cc113 |
The dearth of relatated links is discouraging.
I think it has something to do with a Tri-Fi that has locked to 4G in one location and is then moved. In your case, do you know if other folks nearby with a Tri-fi can connect to Sprint or Millenicom?
If you're a paying customer, I think any resolution will require Sprint to get involved. It doesn't sound like a signal strength issue in your case and in my case I'm very sure it wasn't as I had very good signal.
To clarify, my connection problem involves a brand new Tri-Fi. I am on the Sprint system using the unlimited4g.com service, the company that provided the Tri-Fi. Because Sprint 4G LTE has not been officially lit up in this area yet, I am assuming that some towers may have low power testing going on or the backhaul connection is incomplete. As I mentioned in the original post, I can get 3G with a 100% signal strength indicated, but 4G LTE just won't connect.
·Virgin Mobile Br..
|reply to tcassette |
Sprint LTE looking good here....
Color me green with envy...
San Francisco, CA
Haha yeah those are some nice speeds compuguybna...
So today I randomly checked to see if there was anything new with the 4G connection issues, and low and behold - 4G!
It just decided to connect in the normal place I keep the device. Millenicom tech support had said a few days ago that there were "outages" in my area, so I guess the network is back on for me...?
I am getting good speeds, i.e. up to 12.5mbps down and about 7 up. Not bad. It has been a bit spotty in the sense of it has worked some of the time today, and I've had to switch back to 3G the rest of the time. When it's spotty, speeds are around 0.1-0.2mbps on 4G, so something's still not right....
It seems like the error 138 in my case may just be that the signal isn't strong enough. It was like it could see that there was a signal, but not connect. Was kind of weird that when I would try to connect to 4G and look at the signal strength, it would be around -90dbm. But when I would look at the 4G signal strength when connected to 3G only, it was closer to -150dbm... seems like the latter could have been the real signal strength...?
Now its showing -89dbm...
Probably too much banal info here, just wanted to post my symptoms & troubles for reference. Really just seems that the towers weren't working correctly near me. Was great timing as I had just gotten the device and activated it - then nothing!
I should receive my signal booster Tuesday, and will jump back on after I've had a chance to test it out - peace!
New York, NY
said by cc113:I have no idea, but I can tell you I have exactly the same experience with LTE. Right now, for example, I'm connected to LTE and I see a signal strength somewhat similar to yours, -80. But if I disconnect from LTE and switch to WiMax or 3G, the LTE signal strength drops into the -100s (don't recall the exact figure).
Was kind of weird that when I would try to connect to 4G and look at the signal strength, it would be around -90dbm. But when I would look at the 4G signal strength when connected to 3G only, it was closer to -150dbm... seems like the latter could have been the real signal strength...?
Since my download speeds with LTE right now, while slightly better than WiMax, are still running below Sprint's minimum LTE spec, posted under the Speeds tab at »shop2.sprint.com/en/shop/why_spr···13:4GLTE , of 6 megs --
-- , I'm tentatively concluding that my signal strength must be running below spec, so I'm also inclined to believe the disconnected figure.
So, for now, I guess I have to hope that when the LTE rollout is finally unveiled officially in my neck of the woods (I've heard that could happen in September) I will find my download speed finally going north of 6 megs and my signal strength remaining strong whether connected or not.
It would be interesting to hear from folks here who connect to LTE in an area which Sprint HAS officially rolled out for business, and where speeds are in spec, i.e. consistently above 6 megs a second. What sort of signal strength are you seeing? Is the signal strength the same whether you are connected or not? If it's different, what are the two signal strength readings?
Curiously enough, I am seeing NO discrepancy in signal strength on WiMax or 3G when I'm connected versus when I'm not connected; that seems to be strictly an LTE phenomenon.
San Francisco, CA
Just wanted to touch base with y'all and kind of rap things up for my portion of the postings, and I thank everyone for their input...
For the most part, 4g lte has been working for me since Sunday. I've seen speeds up to approx 1.6 MB/s, which I certainly can't complain about. I say, "For the most part...." because often it has a problem connecting with regular webpages. Using dropbox or downloading files there is usually no connection problems. Just with ordinary webpages... I will watch real-time speeds in my 'Menu Meters' app on my mac while trying to access pages, and often they don't really want to load up, coming in at approx 5.0-10.0 kb/s, or 0.05-0.10 mbps. This is basically dial-up speed.
Not sure what the deal is with the page loading problems, but to resolve it I usually have to quit the page and turn the Tri-Fi device back to 3g. The page will then have no problem loading up. Weird...
Unfortunately, the Wilson sleek does not help me at my location. I kind of already knew it wouldn't, but hoped for even better signals. The 3g was boosted approx -4dbm, but that was from -69dbm --> -65dbm. My signal probably couldn't get much better if I was standing next to a tower (which one is fairly close I think). The sad part is, I didn't do thorough enough research on the 4g bands to see if the Wilson sleek 4g V (Verizon's 4G booster) would boost the same bands as Sprint's 4g lte. Nope. I recall Verizon using approx 800mghz where Sprint uses closer to 1800mghz (correct me if I'm wrong). So as you would expect, no 4g lte boost. And that is what I was hoping it would help out with. I will probably return it and wait for a Sprint version to come out, as I will use it for work in the future (while in the middle of nowhere).
So it seems for the first week my errors (#138) on my tri-fi were mainly due to not having 4g service available, as millenicom has since told me there were 'outages' during that time.
I hope everyone else's problems work themselves out quickly, and thanks again - peace!
Appreciate the update! Bottom line the #138 errors for you went away on their own. Interesting.
|reply to tcassette |
Good news update: last night I got adventurous and changed the external antenna from one port to the other on the Tri-Fi (left to right), then rebooted it. Amazingly, it connected to 4G LTE, but showed a "poor" 10% signal strength. The RSRP is -101dBm, but my download speed has gone from 0.6 Mbps (3G) to over 7 Mbps!
Sprint has still not officially lit up 4G in my area, but I am very happy even with the low signal strength. The funny thing is that I had tried both antenna ports a while back and never was able to connect to 4G until now.
New York, NY
Interesting. I googled a bit and discovered that Netgear (formerly Sierra Wireless) does not recommend any antenna for those "antenna" ports. Instead they recommend using their desktop cradle as the antenna, since it connects to BOTH ports simultaneously. So I got their desktop cradle, and have seen some improvements. It is still below Sprint's minimum download spec of 6 megs a second, as listed under the Speeds tab at »shop2.sprint.com/en/shop/why_spr···13:4GLTE. But it is somewhat better than I was getting previously, and the upload speed continues to be comfortably well above the 2-3 meg spec. Here's what I'm getting today:
My below-spec download specs do not appear related to signal strength. I'm currently getting six bars out of six on my Tri-Fi, 100% on the display, a signal strength of -78 dBm and a CINR/RSRQ of -12. If someone can tell me how good or bad that CINR/RSRQ figure is, I'd be appreciative, thanks. I'm suspecting that figure may have something to do with my piss-poor download speeds.
I'm in midtown Manhattan, zip 10022.