OAI and LimeSDR-Mini

Projects RAN Forum
169

@dchard
Good point, I’ll definitely give it a try!
Thanks

170

I managed to connect my phone using the band 20 @5MHz. But the internet connection is really slow. Anyone else experiencing a slow internet connection?

I use those parameters:
tx_gain:76
rx_gain:105
pdsch_referencesignalpower: -20

1 Like
171

@dchard can you please share your config file for band20 ?

172

Besides the ref.sig value and TX and RX gains (already shared), there is no difference. As for 800 I dont have a duplex filter, that band is not optimized and used by me often. I just used it to test my theory about the massive frequency error of the Mini, that some of the phones were not attaching due to that reason.

173

Hi,
I’m trying to run the OAI LTE setup and ran into an issue.
Everything this working. No errors, but I’m unable to see the eNB on my cell phone.
Setup:
OAI-RAN on a separate machine
OAI-CN on a separate machine
Radio: LimeSDR-mini
Cell Phones: Nexus 6P and OnePlus 6
Frequency Bands tested: Band1, Band7, Band20

I do not see any errors when the radio is configured I can see eNB in the MME.

Not sure what the problem is. I tried it with different MCC/MNC no luck.

if anyone can help me that would be great
Thanks

174

Hello All,
i kindly need assistance:
I think there might be something wrong with the SDR. i have connected a limeSDR to ubunru 16.04 OS.
It doesn’t show up when connected with USB 3.0 cable as per below:

/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/8p, 5000M

/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M

|__ Port 3: Dev 2, If 0, Class=Hub, Driver=hub/4p, 12M

    |__ Port 1: Dev 4, If 2, Class=Human Interface Device, Driver=usbhid, 12M

    |__ Port 1: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 12M

|__ Port 9: Dev 3, If 0, Class=Wireless, Driver=btusb, 12M

|__ Port 9: Dev 3, If 1, Class=Wireless, Driver=btusb, 12M

It only shows up when I have a USB 2.0 cable connected as highlited below:

/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/8p, 5000M

/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M

|__ Port 2: Dev 13, If 0, Class=Vendor Specific Class, Driver=, 480M

|__ Port 3: Dev 2, If 0, Class=Hub, Driver=hub/4p, 12M

    |__ Port 1: Dev 4, If 2, Class=Human Interface Device, Driver=usbhid, 12M

    |__ Port 1: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 12M

|__ Port 9: Dev 3, If 0, Class=Wireless, Driver=btusb, 12M

|__ Port 9: Dev 3, If 1, Class=Wireless, Driver=btusb, 12M

I have tested the USB 3.0 extension cable with other devices and it works ok.

/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/8p, 5000M

|__ Port 1: Dev 4, If 0, Class=Mass Storage, Driver=uas, 5000M

/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M

|__ Port 2: Dev 13, If 0, Class=Vendor Specific Class, Driver=, 480M

|__ Port 3: Dev 2, If 0, Class=Hub, Driver=hub/4p, 12M

    |__ Port 1: Dev 4, If 2, Class=Human Interface Device, Driver=usbhid, 12M

    |__ Port 1: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 12M

|__ Port 9: Dev 3, If 0, Class=Wireless, Driver=btusb, 12M

|__ Port 9: Dev 3, If 1, Class=Wireless, Driver=btusb, 12M
175

hi… have you found a sloution? i have a similar problem