[srslte-users] Help with understanding an error

Tue Aug 25 15:34:49 UTC 2020

Hello,

I am trying to run srsLTE but i am failing with some errors. Below are the logs from srsue and srsenb. Can someone please explain these errors.

ERRORS -
1.Error encoding PUSCH
2. Scheduling request failed: releasing RRC connection...
3. Corrupted MAC PDU

sudo srsue
Reading configuration file /etc/srslte/ue.conf...

Built in Release mode using commit d045213fb on branch HEAD.

Opening 1 RF devices with 1 RF channels...
[INFO] [UHD] linux; GNU C++ version 7.3.0; Boost_106501; UHD_3.15.0.0-2ubuntu1emulab1
[INFO] [LOGGING] Fastpath logging disabled at runtime.
Opening USRP with args: type=b200,master_clock_rate=23.04e6
[INFO] [B200] Detected Device: B210
[INFO] [B200] Operating over USB 3.
[INFO] [B200] Initialize CODEC control...
[INFO] [B200] Initialize Radio control...
[INFO] [B200] Performing register loopback test...
[INFO] [B200] Register loopback test passed
[INFO] [B200] Performing register loopback test...
[INFO] [B200] Register loopback test passed
[INFO] [B200] Asking for clock rate 23.040000 MHz...
[INFO] [B200] Actually got clock rate 23.040000 MHz.
Waiting PHY to initialize ... done!
Attaching UE...
Searching cell in DL EARFCN=2800, f_dl=2625.0 MHz, f_ul=2505.0 MHz
.
Found Cell:  Mode=FDD, PCI=1, PRB=25, Ports=1, CFO=-7.1 KHz
Found PLMN:  Id=99898, TAC=1
Random Access Transmission: seq=9, ra-rnti=0x2
Random Access Complete.     c-rnti=0x12e, ta=5
RRC Connected
Network attach successful. IP: 172.16.0.6
Software Radio Systems LTE (srsLTE)
/opt/srslte/lib/src/phy/phch/pusch.c.355: Error encoding PUSCH: invalid L_prb=7

/opt/srslte/lib/src/phy/ue/ue_ul.c.301: Error encoding PUSCH

/opt/srslte/lib/src/phy/phch/pusch.c.355: Error encoding PUSCH: invalid L_prb=17

/opt/srslte/lib/src/phy/ue/ue_ul.c.301: Error encoding PUSCH

/opt/srslte/lib/src/phy/phch/pusch.c.355: Error encoding PUSCH: invalid L_prb=17

/opt/srslte/lib/src/phy/ue/ue_ul.c.301: Error encoding PUSCH

/opt/srslte/lib/src/phy/phch/pusch.c.355: Error encoding PUSCH: invalid L_prb=7

/opt/srslte/lib/src/phy/ue/ue_ul.c.301: Error encoding PUSCH

/opt/srslte/lib/src/phy/phch/pusch.c.355: Error encoding PUSCH: invalid L_prb=22

/opt/srslte/lib/src/phy/ue/ue_ul.c.301: Error encoding PUSCH

/opt/srslte/lib/src/phy/phch/pusch.c.355: Error encoding PUSCH: invalid L_prb=22

/opt/srslte/lib/src/phy/ue/ue_ul.c.301: Error encoding PUSCH

/opt/srslte/lib/src/phy/phch/pusch.c.355: Error encoding PUSCH: invalid L_prb=22

/opt/srslte/lib/src/phy/ue/ue_ul.c.301: Error encoding PUSCH

/opt/srslte/lib/src/phy/phch/pusch.c.355: Error encoding PUSCH: invalid L_prb=7

/opt/srslte/lib/src/phy/ue/ue_ul.c.301: Error encoding PUSCH

/opt/srslte/lib/src/phy/phch/pusch.c.355: Error encoding PUSCH: invalid L_prb=7

/opt/srslte/lib/src/phy/ue/ue_ul.c.301: Error encoding PUSCH

/opt/srslte/lib/src/phy/phch/pusch.c.355: Error encoding PUSCH: invalid L_prb=7

/opt/srslte/lib/src/phy/ue/ue_ul.c.301: Error encoding PUSCH

/opt/srslte/lib/src/phy/phch/pusch.c.355: Error encoding PUSCH: invalid L_prb=7

/opt/srslte/lib/src/phy/ue/ue_ul.c.301: Error encoding PUSCH

Received RRC Connection Release
Scheduling request failed: releasing RRC connection...
Random Access Transmission: seq=25, ra-rnti=0x2
Random Access Transmission: seq=5, ra-rnti=0x2
Random Access Transmission: seq=31, ra-rnti=0x2
Random Access Transmission: seq=5, ra-rnti=0x2
Random Access Transmission: seq=28, ra-rnti=0x2
Random Access Transmission: seq=28, ra-rnti=0x2
Random Access Transmission: seq=49, ra-rnti=0x2
Random Access Transmission: seq=41, ra-rnti=0x2
RRC IDLE

---------------------------------------------------------------------------------------------------------

sudo srsenb

Built in Release mode using commit d045213fb on branch HEAD.

---  Software Radio Systems LTE eNodeB  ---

Reading configuration file /etc/srslte/enb.conf...
Opening 1 RF devices with 1 RF channels...
[INFO] [UHD] linux; GNU C++ version 7.3.0; Boost_106501; UHD_3.15.0.0-2ubuntu1emulab1
[INFO] [LOGGING] Fastpath logging disabled at runtime.
Opening USRP with args: type=x300,master_clock_rate=184.32e6
[INFO] [X300] X300 initialization sequence...
[INFO] [X300] Maximum frame size: 8000 bytes.
[INFO] [X300] Radio 1x clock: 184.32 MHz
[INFO] [GPS] No GPSDO found
[INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D00000000000)
[INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1304 MB/s)
[INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1306 MB/s)
[INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD100000000001)
[INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD100000000001)
[INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0000000000000)
[INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0000000000000)
Setting frequency: DL=2625.0 Mhz, UL=2505.0 MHz
Setting Sampling frequency 5.76 MHz

==== eNodeB started ===
Type <t> to view trace
RACH:  tti=1491, preamble=26, offset=3, temp_crnti=0x46
Disconnecting rnti=0x46.
RACH:  tti=3141, preamble=44, offset=3, temp_crnti=0x47
Disconnecting rnti=0x47.
RACH:  tti=3231, preamble=27, offset=5, temp_crnti=0x48
Disconnecting rnti=0x48.
RACH:  tti=3321, preamble=4, offset=5, temp_crnti=0x49
Disconnecting rnti=0x49.
RACH:  tti=3411, preamble=37, offset=3, temp_crnti=0x4a
Disconnecting rnti=0x4a.
RACH:  tti=3501, preamble=46, offset=3, temp_crnti=0x4b
Disconnecting rnti=0x4b.
RACH:  tti=3591, preamble=33, offset=3, temp_crnti=0x4c
Disconnecting rnti=0x4c.
RACH:  tti=3681, preamble=6, offset=5, temp_crnti=0x4d
Disconnecting rnti=0x4d.
RACH:  tti=3771, preamble=31, offset=3, temp_crnti=0x4e
Disconnecting rnti=0x4e.
RACH:  tti=3861, preamble=40, offset=3, temp_crnti=0x4f
Disconnecting rnti=0x4f.
RACH:  tti=3951, preamble=22, offset=3, temp_crnti=0x50
Disconnecting rnti=0x50.
RACH:  tti=5791, preamble=43, offset=3, temp_crnti=0x51
Disconnecting rnti=0x51.
RACH:  tti=6261, preamble=46, offset=3, temp_crnti=0x52
Disconnecting rnti=0x52.
RACH:  tti=7921, preamble=50, offset=3, temp_crnti=0x53
Disconnecting rnti=0x53.
RACH:  tti=8011, preamble=41, offset=3, temp_crnti=0x54
Disconnecting rnti=0x54.

/opt/srslte/lib/src/common/pdu.cc.61: Corrupted MAC PDU (read_len=4, pdu_len=3)

/opt/srslte/lib/src/common/pdu.cc.61: Corrupted MAC PDU (read_len=4, pdu_len=3)

RACH:  tti=8101, preamble=15, offset=3, temp_crnti=0x55
Disconnecting rnti=0x55.
RACH:  tti=8191, preamble=18, offset=3, temp_crnti=0x56
Disconnecting rnti=0x56.
RACH:  tti=8281, preamble=43, offset=3, temp_crnti=0x57
Disconnecting rnti=0x57.
RACH:  tti=8371, preamble=7, offset=5, temp_crnti=0x58
Disconnecting rnti=0x58.

Thank you,

Raghav Rathi

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