Changes between Version 1 and Version 2 of Tutorials/g0WmLTE/Tutorial7


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Timestamp:
Jun 30, 2016, 8:08:46 PM (8 years ago)
Author:
msherman
Comment:

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  • Tutorials/g0WmLTE/Tutorial7

    v1 v2  
    2222* Netgear 341u Dongle running on sandbox1 node1-2
    2323 * Commands run are as in the [http://www.orbit-lab.org/wiki/Tutorials/g0WmLTE/Tutorial5#AmariSoftLTE Amarisoft tutorial].
     24==== Sequencing ====
     251. Launch EPC on bsc03out (this should already be running, and there are REST commands to control it)
     261. On the netgear dongle, in the Minicom session, run at!reset
     271. Launch the eNB (this works around an issue where the eNB crashes on reconnect of existing session)
     281. If the eNB crashes, reset the UE prior to re-launching the eNB
     29
     30==== Preliminary Results ====
     31* Configurations
     32 * Client devices will connect on band 25 or band 41
     33 * OAI band 41 FDD is unstable, and crashes
     34 * Bandwidths greater than 5mhz crash the eNB on band41, and fail to connect to the UEs on band 25, desipite being officially supported
     35* Performance
     36 * Measured with Netgear 341u, band 25, 5mhz bandwidth
     37 * {{{iperf -s}}} running on bsc03out, {{{iperf -c 192.168.3.1 -r}}} running on node1-2.sb1
     38 * TCP: 2.85mbps upstream, 16.1 mbps downsteam
     39 * UDP: 8.15 mbps upstream, with 0-1.7% loss, 1 packet received out of order
     40 * UDP: Downstream fails to connect, or crashed eNB
     41* Error messages seen
     42 * {{{ [RRC][N][eNB 0] Frame 627: received a DCCH 1 message on SRB 0 with Size 50 from UE b9b8 [RRC][I][FRAME 21158][eNB][MOD 00][RNTI b9b8] Received on DCCH 1 RRC_DCCH_DATA_IND [RRC][I][FRAME 21158][eNB][MOD 00][RNTI b9b8] [RAPROC] Logical Channel UL-DCCH, processing RRCConnectionSetupComplete from UE Segmentation fault (core dumped) }}}
     43 * {{{ [PHY][E][remove_harq_pid_from_freelist] /root/openairinterface5g/openair1/SCHED/phy_procedures_lte_eNb.c:154: critical error, get in touch with the authors }}}
     44
     45=== Amarisoft eNB and EPC ===
     46Working, needs writeup
     47
     48=== OAI eNB and EPC ===
     49* All components functional, and communicate with each other.
     50* Commercial UE unable to register/associate. Repeatedly partially associated on bands 25 and 41.
     51* Error seen crashing MME component, complains that IMSI is too short, only 13 digits.
     52 * IMSI is 15 digits, 001010000000001, but has two leading 0s. May be a bug in IMSI length parsing, test PLMN is only one with leading zeros, and eurecom using 20893 instead.
     53* Currently working images are msherman-oai-enb.ndz and msherman-oai-epc.ndz, with enb running on node1-1, and epc on either node1-2, or node2-1.