[srslte-users] srsRAN UE with OAI 5G

[Diarmuid Collins]

Hi Raymond

Log attached. There is some capability info in there [see sample below] .

It would be excellent to get srsRAN UE working with the gNB. It would
simplify a lot of experimentation researchers.

Diarmuid

15:21:06.729520 [RRC-NR ] [D] NR capabilities (6 B)

    0000: 80 00 10 00 03 00

15:21:06.729521 [RRC    ] [I] Including NR capabilities in UE Capability
Info (6 B)

15:21:06.729529 [PHY    ] [D] [ 5800] SNR=32.0 dB, RSRP=-71.8 dBm
sync=in-sync from channel estimator

15:21:06.729541 [RRC-NR ] [D] EUTRA-NR capabilities (22 B)

    0000: 01 1c 04 00 60 c0 00 00 00 00 60 10 44 04 14 e8

    0010: 00 00 00 00 10 08

15:21:06.729544 [RRC    ] [I] Including EUTRA-NR capabilities in UE
Capability Info (22 B)

15:21:06.729544 [RRC    ] [D] Requested Freq Bands NR MRDC R15 present

15:21:06.729557 [RRC    ] [D] SRB1 - Tx ueCapabilityInformation (33 B)

    0000: 3c 02 50 68 00 01 00 00 30 06 16 01 1c 04 00 60

    0010: c0 00 00 00 00 60 10 44 04 14 e8 00 00 00 00 10




~/.config/srsran/ue.conf

[log]

all_level = debug

phy_lib_level = debug

all_hex_limit = 32

filename = /tmp/ue.log

file_max_size = -1



-------------------------------------------------------------------
Diarmuid Collins PhD
Iris Testbed Manager,
CONNECT Centre for Future Networks,
Dunlop Oriel House,
Trinity College,
Dublin 2, Ireland
E: dcollin5 at tcd.ie
W:https://connectcentre.ie/people/diarmuid-collins/


On Fri, 21 May 2021 at 13:08, knopp <Raymond.Knopp at eurecom.fr> wrote:

> Hi Diarmuid,
>
> I think we'd have to either run the eNB with the T tracer and get the
> log or add a hexdump of the NR UE capabilities. The asn1 decoder for the
> LTE UECapabilityInformation containing the 5G container is failing. This
> has only been tested with a (limited) set of Commercial NSA UEs and an
> even more limited set of NSA/SA UEs.
>
> This is the first message with a 5G container coming from the UE. Do you
> have a hexdump on the UE side of what is sent? Otherwise, we can help
> you activate the necessary logs in the eNB to get the hexdump and then
> we can use an online ASN1 decoder to check what could be wrong. When the
> decoding of the LTE message passes, the 5G OCTET_STRING component of the
> message gets sent to the gNB and this we can see with wireshark or in
> the text logs of the gNB, but unless until overall 4G message is decoded
> we can't see any of the 5G information.
>
> It's already a good sign that the first LTE UECapabilityInformation was
> decoded with the necessary R15 information elements and that the 5G
> measurement reports came in :-)
>
> Raymond
> On 21/05/2021 13:35, Diarmuid Collins wrote:
> > Hi OAI/srsRAN Community
> > Has anybody had any success connecting srsRAN UE - NR (B210) to OAI gNB
> > (USRP B210).
> >
> > This is supported by an enb (USRP b210), and OAI 5G ENDC NSA core.
> >
> > eNB handover to gNB logs fails saying (logs attached):
> >
> > [SCTP] Successfully sent 61 bytes on stream 1 for assoc_id 16
> >
> > [RRC] [FRAME 00000][eNB][MOD 00][RNTI 5011] received
> > ueCapabilityInformation on UL-DCCH 1 from UE
> >
> > [RRC] got UE capabilities for UE 5011
> >
> > *[RRC] [FRAME 00000][eNB][MOD 00][RNTI 5011] Failed to decode nr UE
> > capabilities (0 bytes)*
> >
> > *
> > *
> >
> > *
> > *
> >
> > Note, the srsRAN RN-UE will connect no problem to the standalone ENB
> > with OAI 5G ENDC NSA core [log also attached].
> >
> >
> > Diarmuid
> >
> > -------------------------------------------------------------------
> > Diarmuid Collins PhD
> > Iris Testbed Manager,
> > CONNECT Centre for Future Networks,
> > Dunlop Oriel House,
> > Trinity College,
> > Dublin 2, Ireland
> > E: dcollin5 at tcd.ie <mailto:dcollin5 at tcd.ie>
> > W:https://connectcentre.ie/people/diarmuid-collins/
> > <https://connectcentre.ie/people/diarmuid-collins/>
>
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