[srsran-users] RAR not transmitted within the RA Response window

Gaurish Kadam gaurish at kumunetworks.com
Thu Feb 10 21:44:26 UTC 2022


Can someone please suggest a workaround here?

I took another look at the logs. *RRCConnectionSetupComplete* did not
receive a grant to transmit.

UE --> *RRCConnectionRequest* --> eNB (success)
UE <-- *RRCConnectionSetup* <-- eNB (success)
UE --> *RRCConnectionSetupComplete* --> eNB (Failed)

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
--> UE log

2022-02-09T22:31:31.961634 [RRC    ] [D] Setting UE contention
resolution ID: 96997291055128

2022-02-09T22:31:31.961642 [RRC    ] [D] SRB0 - Tx rrcConnectionRequest (6 B)
2022-02-09T22:31:31.961645 [RRC    ] [I] Proc "Connection Request" -
Waiting for RRCConnectionSetup/Reject or expiry

2022-02-09T22:31:31.962666 [MAC    ] [D] [ 2251] BSR:   New data
available for lcid=0
2022-02-09T22:31:31.962666 [MAC    ] [D] [ 2251] BSR:   Triggering
Regular BSR tti=2251
2022-02-09T22:31:31.962666 [MAC    ] [D] [ 2251] BSR:   Triggering SR procedure
2022-02-09T22:31:31.962667 [MAC    ] [I] [ 2251] SR:    PUCCH not
configured. Starting RA procedure
2022-02-09T22:31:31.962667 [MAC    ] [I] [ 2251] RA:    INIT:
Starting PRACH by MAC order

2022-02-09T22:31:31.962669 [MAC    ] [D] [ 2251] RA:    INIT:
Selected preambleIndex=17 maskIndex=0 GroupA=52, GroupB=0
2022-02-09T22:31:31.968648 [PHY    ] [I] [ 2257] PRACH: Transmitted
preamble=17, tti_tx=2261, CFO=0.28 KHz, nof_sf=1, target_power=-104.0
dBm
2022-02-09T22:31:31.968692 [MAC    ] [I] [ 2257] RA:    PDCCH:
seq=17, ra-rnti=0x2, ra-tti=2261, f_id=0

2022-02-09T22:31:31.975633 [MAC    ] [D] [ 2263] SCHED: Searching
RAR-RNTI=0x2, tti=2264
2022-02-09T22:31:31.976692 [MAC    ] [D] [ 2265] SCHED: Searching
RAR-RNTI=0x2, tti=2265
2022-02-09T22:31:31.977539 [MAC    ] [D] [ 2265] SCHED: Searching
RAR-RNTI=0x2, tti=2266
2022-02-09T22:31:31.977540 [PHY1   ] [D] [ 2266] PDCCH looking for rnti=0x2

2022-02-09T22:31:31.977557 [PHY1   ] [I] [ 2266] PDCCH: cc=0, f=1A,
cce= 0, L=2, riv=100, pid=0, mcs={1}, ndi={0}, tpc_pucch=0, snr=35.3
dB
2022-02-09T22:31:31.977558 [MAC    ] [D] [ 2265] RA:    Rx:     DL dci
found RA-RNTI=2
2022-02-09T22:31:31.977580 [MAC    ] [D] [ 2266] RA:    Rx:     RAR
decoded successfully TBS=11
2022-02-09T22:31:31.977582 [PHY    ] [D] [ 2266] RAR grant
rar_grant=2266, msg3_tti=2272, stored in index=12
2022-02-09T22:31:31.977583 [MAC    ] [I] [ 2266] RA:    Rx:
RAPID=17, TA=1, T-CRNTI=0x46

2022-02-09T22:31:31.977681 [MAC    ] [D] [ 2266] RA:    Rx:
Waiting for Contention Resolution

2022-02-09T22:31:31.978580 [MAC    ] [D] [ 2266] SCHED: Searching Temp-RNTI=0x46
2022-02-09T22:31:31.978581 [PHY0   ] [D] [ 2267] PDCCH looking for rnti=0x46

2022-02-09T22:31:32.013842 [RRC    ] [D] SRB0 - Rx rrcConnectionSetup (20 B)

2022-02-09T22:31:32.014060 [MAC    ] [D] [ 2302] RA:    ConRes: MAC
PDU Contains Contention Resolution ID CE
2022-02-09T22:31:32.014065 [MAC    ] [I] [ 2302] RA:    ConRes: Random
Access Complete.     c-rnti=0x46, ta=1

2022-02-09T22:31:32.014084 [RRC    ] [D] SRB1 - Tx
rrcConnectionSetupComplete (25 B)

2022-02-09T22:31:32.014604 [RLC    ] [D] SRB1 Total buffer state - 1 SDUs (32 B)
2022-02-09T22:31:32.014604 [MAC    ] [D] [ 2303] BSR:   New data
available for lcid=1
2022-02-09T22:31:32.014604 [MAC    ] [D] [ 2303] BSR:   Triggering
Regular BSR tti=2303
2022-02-09T22:31:32.014605 [MAC    ] [D] [ 2303] BSR:   Triggering SR procedure
2022-02-09T22:31:32.014605 [MAC    ] [I] [ 2303] SR:    Signalling PHY
sr_counter=1
2022-02-09T22:31:32.014619 [MAC    ] [D] [ 2303] SCHED: Searching C-RNTI=0x46
2022-02-09T22:31:32.014619 [PHY0   ] [D] [ 2303] PDCCH looking for rnti=0x46
2022-02-09T22:31:32.015657 [PHY1   ] [D] [ 2304] PDCCH looking for rnti=0x46
2022-02-09T22:31:32.035583 [PHY1   ] [D] [ 2324] PDCCH looking for rnti=0x46
2022-02-09T22:31:32.037681 [PHY1   ] [I] [ 2326] PDCCH: cc=0, f=1A,
cce= 6, L=0, riv=100, pid=1, mcs={6}, ndi={1}, tpc_pucch=0, snr=36.8
dB
2022-02-09T22:31:32.164667 [PHY0   ] [D] [ 2453] PDCCH looking for rnti=0x46

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
--> eNB log

2022-02-09T22:31:32.006492 [RRC    ] [I] Tx SRB0 PDU, rnti=0x46 -
rrcConnectionSetup (20 B)

2022-02-09T22:31:32.007314 [PHY0   ] [I] [ 2298] PDCCH: cc=0,
rnti=0x46, f=1A, cce= 0, L=3, riv=100, pid=1, mcs={6}, ndi={1},
tpc_pucch=1, tti_tx_dl=2302
2022-02-09T22:31:32.013403 [PHY0   ] [I] [ 2304] PDCCH: cc=0,
rnti=0x46, f=1A, cce= 0, L=3, riv=100, pid=0, mcs={0}, ndi={1},
tpc_pucch=1, tti_tx_dl=2308
2022-02-09T22:31:32.015314 [PHY0   ] [I] [ 2306] PDCCH: cc=0,
rnti=0x46, f=1A, cce= 0, L=3, riv=100, pid=1, mcs={6}, ndi={1},
tpc_pucch=1, tti_tx_dl=2310
2022-02-09T22:31:32.021375 [PHY0   ] [I] [ 2312] PDCCH: cc=0,
rnti=0x46, f=1A, cce= 0, L=3, riv=100, pid=0, mcs={0}, ndi={1},
tpc_pucch=1, tti_tx_dl=2316
2022-02-09T22:31:32.029346 [PHY0   ] [I] [ 2320] PDCCH: cc=0,
rnti=0x46, f=1A, cce= 0, L=3, riv=100, pid=0, mcs={0}, ndi={1},
tpc_pucch=1, tti_tx_dl=2324

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

ue_enb_logs.zip
<https://github.com/srsran/srsRAN/files/8044218/ue_enb_logs.zip>

On Wed, Feb 9, 2022 at 5:49 PM Gaurish Kadam <gaurish at kumunetworks.com>
wrote:

> Hello, Can someone please guide, how to fix this issue?
>
>
> *## Issue Description ##*srsue complains - immediately after Random
> Access Complete - "Scheduling request failed: releasing RRC connection".
> srenb prints "Could not transmit RAR within the window (RA=2261,
> Window=[2264, 2274), RAR=2274"
>
>
>
> *## Setup Details ##*- 2 x RF-frontends - USRP X300
> - 2 x PCs with a Linux based OS and identical configuration (below) -
> srsRAN installed on both PCs
>
>  Operating System: Ubuntu 20.04.3 LTS
>    Kernel: Linux 5.4.0-99-generic
>      Architecture: x86-64
>
> - On machine 1, in one console, run srsEPC - in another console, run
> srsENB
> - On machine 2, run srsUE
>
> - RF front-end driver: 3.15.0
>
>
>
> *## Expected Behavior ##*srsUE on (PC2/ USRP2) should attach to the
> (srsENB + srsEPC) radiated from (PC1/ USRP1)
>
>
>
> *## Actual Behaviour ##*
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> ENB ==>
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> -- screen display after executing command "srsenb"
>
> ==== eNodeB started ===
> Type <t> to view trace
> Setting frequency: DL=1930.0 Mhz, UL=1850.0 MHz for cc_idx=0 nof_prb=50
> RACH:  tti=2261, cc=0, preamble=17, offset=1, temp_crnti=0x46
> RACH:  tti=2261, cc=0, preamble=18, offset=23, temp_crnti=0x47
> SCHED: Could not transmit RAR within the window (RA=2261, Window=[2264,
> 2274), RAR=2274
> Disconnecting rnti=0x47.
>
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> -- enb.log
>
> 2022-02-09T22:31:31.970238 [PHY    ] [I] [ 2262] PRACH: cc=0, 0/2,
> preamble=17, offset=1.0 us, peak2avg=154.5, max_offset=30.0 us
> 2022-02-09T22:31:31.970241 [PHY    ] [I] [ 2262] PRACH: cc=0, 1/2,
> preamble=18, offset=12.4 us, peak2avg=264.9, max_offset=30.0 us
>
>   2022-02-09T22:31:31.970423 [MAC    ] [I] [ 2261] SCHED: New PRACH
> tti=2261, preamble=17, temp_crnti=0x46, ta_cmd=1, msg3_size=7
>
> 2022-02-09T22:31:31.970423 [MAC    ] [I] [ 2261] RACH:  tti=2261, cc=0,
> preamble=17, offset=1, temp_crnti=0x46
> 2022-02-09T22:31:31.971252 [MAC    ] [I] [ 2262] SCHED: RAR, ra-rnti=2,
> rbgs=[0, 1), dci=(2,0), msg3 grants=[{c-rnti=0x46, rba=102, mcs=0}]
>
> 2022-02-09T22:31:31.979082 [MAC    ] [I] [ 2269] SCHED: New PRACH
> tti=2261, preamble=18, temp_crnti=0x47, ta_cmd=23, msg3_size=7
> 2022-02-09T22:31:31.979083 [MAC    ] [I] [ 2269] RACH:  tti=2261, cc=0,
> preamble=18, offset=23, temp_crnti=0x47
>
> 2022-02-09T22:31:31.979244 [MAC    ] [W] [ 2270] SCHED: Could not transmit
> RAR within the window (RA=2261, Window=[2264, 2274), RAR=2274
>
> 2022-02-09T22:31:32.006248 [RRC    ] [I] Rx SRB0 PDU, rnti=0x46 -
> rrcConnectionRequest (6 B)
> 2022-02-09T22:31:32.006492 [RRC    ] [I] Tx SRB0 PDU, rnti=0x46 -
> rrcConnectionSetup (20 B)
>
>
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> UE ==>
>
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> -- screen display after executing command "srsue"
>
> Attaching UE...
> .
> Found Cell:  Mode=FDD, PCI=1, PRB=50, Ports=1, CP=Normal, CFO=0.6 KHz
> Found PLMN:  Id=00101, TAC=7
> Random Access Transmission: seq=17, tti=2261, ra-rnti=0x2
> RRC Connected
> Random Access Complete.     c-rnti=0x46, ta=1
> Scheduling request failed: releasing RRC connection...
> Random Access Transmission: seq=20, tti=3601, ra-rnti=0x2
> Random Access Transmission: seq=32, tti=3651, ra-rnti=0x2
> Random Access Transmission: seq=13, tti=3701, ra-rnti=0x2
> Random Access Transmission: seq=28, tti=3751, ra-rnti=0x2
> Random Access Complete.     c-rnti=0x46, ta=1
> Random Access Transmission: seq=8, tti=3851, ra-rnti=0x2
> Random Access Complete.     c-rnti=0x46, ta=1
> Random Access Transmission: seq=31, tti=3971, ra-rnti=0x2
> Random Access Complete.     c-rnti=0x46, ta=1
> Random Access Transmission: seq=19, tti=4041, ra-rnti=0x2
> Random Access Complete.     c-rnti=0x46, ta=1
> Warning: Detected Radio-Link Failure
> Random Access Transmission: seq=41, tti=4101, ra-rnti=0x2
> Random Access Complete.     c-rnti=0x46, ta=27
> RRC IDLE
> Attach failed (attempt 1/5)
>
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> -- ue.log
>
> 022-02-09T22:31:31.601818 [NAS    ] [D] Attempting to select PLMN
> 2022-02-09T22:31:31.601819 [STCK   ] [D] tti_tprof: duration=0 msec
> 2022-02-09T22:31:31.601878 [PHY    ] [I] [    0] SYNC:  MIB Decoded:
> Mode=FDD, PCI=1, PRB=50, Ports=1, CFO=0.6 KHz
> 2022-02-09T22:31:31.601897 [PHY    ] [D] [    0] SYNC:  state=SEARCH, tti=6
> 2022-02-09T22:31:31.601897 [PHY    ] [D] [    0] Discarding 1920 samples
> 2022-02-09T22:31:31.601899 [PHY    ] [I] [    0] Cell Search: Found cell
> with PCI=1 with 50 PRB
> 2022-02-09T22:31:31.601899 [PHY    ] [I] [    0] Cell Search: No more
> frequencies in the current EARFCN set
> 2022-02-09T22:31:31.601927 [RRC    ] [I] FSM "phy_controller" - PHY cell
> search completed. Found cell {pci=1, dl_earfcn=600}
> 2022-02-09T22:31:31.601931 [RRC    ] [I] FSM "phy_controller" - transition
> detected - searching_cell -> unknown_st (cause: cell_srch_res)
> 2022-02-09T22:31:31.601933 [RRC    ] [I] Proc "Cell Search" - Cell found
> in this frequency. Setting new serving cell EARFCN=600 PCI=1 ...
> 2022-02-09T22:31:31.601942 [RRC    ] [I] Adding neighbour cell {cell_id:
> 0x0, pci: 1, dl_earfcn: 600, rsrp=+nan, cfo=+601.2}, nof_neighbours=1
> 2022-02-09T22:31:31.601944 [RRC    ] [D] Neighbours: [{cell_id: 0x0, pci:
> 1, dl_earfcn: 600, rsrp=+nan, cfo=+601.2}]
> 2022-02-09T22:31:31.601945 [RRC    ] [I] Setting serving cell {cell_id:
> 0x0, pci: 1, dl_earfcn: 600, rsrp=+nan, cfo=+601.2}, nof_neighbours=0
> 2022-02-09T22:31:31.601950 [RRC    ] [I] FSM "phy_controller" - transition
> detected - unknown_st -> selecting_cell (cause: cell_sel_cmd)
> 2022-02-09T22:31:31.601950 [RRC    ] [I] FSM "selecting_cell" - Starting
> for pci=1, earfcn=600
> 2022-02-09T22:31:31.601951 [PHY    ] [I] [    0] Cell Select: Going to IDLE
> 2022-02-09T22:31:31.601955 [RLC    ] [I] BCCH BCH message received.
>    0000: 60 bc 00
> 2022-02-09T22:31:31.601959 [PHY    ] [I] [    0] Resetting PHY...
> 2022-02-09T22:31:31.601959 [PHY    ] [I] [    0] PHY:   Set TA base: n_ta:
> 0, ta_usec: 0.0
> 2022-02-09T22:31:31.601966 [RRC    ] [D] BCCH-BCH - Rx MIB (3 B)
>    0000: 60 bc 00
> 2022-02-09T22:31:31.601967 [RRC    ] [D] Content:
> [
>  {
>    "BCCH-BCH-Message": {
>      "message": {
> "dl-Bandwidth": "n50",
> "phich-Config": {
>  "phich-Duration": "normal",
>  "phich-Resource": "oneSixth"
> },
> "systemFrameNumber": "00101111",
> "schedulingInfoSIB1-BR-r13": 0,
> "systemInfoUnchanged-BR-r15": false,
> "spare": "0000"
>      }
>    }
>  }
> ]
>
> 2022-02-09T22:31:31.767544 [PHY    ] [I] [ 2056] Out-of-sync 17/20
> 2022-02-09T22:31:31.768586 [PHY    ] [I] [ 2057] Out-of-sync 18/20
> 2022-02-09T22:31:31.770626 [PHY    ] [D] [ 2059] SYNC:  state=CAMPING,
> tti=2060
> 2022-02-09T22:31:31.771516 [PHY    ] [D] [ 2060] SYNC:  state=CAMPING,
> tti=2061
>
> 2022-02-09T22:31:31.796764 [RRC    ] [D] BCCH-DLSCH - Rx
> systemInformationBlockType1 (18 B)
>    0000: 40 40 04 03 00 07 00 19 b0 18 14 10 10 82 80 00
>    0010: 00 00
> 2022-02-09T22:31:31.796829 [RRC    ] [D] Content:
> [
>  {
>    "BCCH-DL-SCH-Message": {
>      "message": {
> "c1": {
>  "systemInformationBlockType1": {
>    "cellAccessRelatedInfo": {
>      "plmn-IdentityList": [
>        {
>          "plmn-Identity": {
>            "mcc": [
>              0,
>              0,
>              1
>            ],
>            "mnc": [
>              0,
>              1
>            ]
>          },
>          "cellReservedForOperatorUse": "notReserved"
>        }
>      ],
>      "trackingAreaCode": "0000000000000111",
>      "cellIdentity": "0000000000011001101100000001",
>      "cellBarred": "notBarred",
>      "intraFreqReselection": "allowed",
>      "csg-Indication": false
>    },
>    "cellSelectionInfo": {
>      "q-RxLevMin": -65
>    },
>    "freqBandIndicator": 2,
>    "schedulingInfoList": [
>      {
>        "si-Periodicity": "rf16",
>        "sib-MappingInfo": [
>          "sibType3"
>        ]
>      }
>    ],
>    "si-WindowLength": "ms20",
>    "systemInfoValueTag": 0
>  }
> }
>      }
>    }
>  }
> ]
>
> 2022-02-09T22:31:31.797694 [PHY    ] [D] [ 2086] SNR=17.6 dB, RSRP=-31.7
> dBm sync=in-sync from channel estimator
>
> 2022-02-09T22:31:31.797756 [RRC    ] [I] Proc "Cell Search" - Completed
> successfully
> 2022-02-09T22:31:31.797758 [RRC    ] [I] Proc "PLMN Search" - completed
> PLMN search
> 2022-02-09T22:31:31.797758 [RRC    ] [I] Proc "PLMN Search" - completed
> with success
>
> 2022-02-09T22:31:31.797780 [NAS    ] [D] Starting T3410. Timeout in 15000
> ms.
> 2022-02-09T22:31:31.797780 [NAS    ] [D] Initiating RRC Connection
> 2022-02-09T22:31:31.797781 [RRC    ] [I] Proc "Connection Request" -
> Initiation of Connection establishment procedure
>
> 2022-02-09T22:31:31.797787 [RRC    ] [I] Proc "Cell Selection" - Current
> serving cell: {cell_id: 0x19b01, pci: 1, dl_earfcn: 600, rsrp=-27.6,
> cfo=+293.8}
>
> 2022-02-09T22:31:31.854695 [PHY    ] [D] [ 2143] SNR=39.3 dB, RSRP=-32.5
> dBm sync=in-sync from channel estimator
>
> 2022-02-09T22:31:31.960772 [RRC    ] [D] Content:
> [
>  {
>    "BCCH-DL-SCH-Message": {
>      "message": {
> "c1": {
>  "systemInformation": {
>    "criticalExtensions": {
>      "systemInformation-r8": {
>        "sib-TypeAndInfo": [
>          {
>            "sib2": {
>              "radioResourceConfigCommon": {
>                "rach-ConfigCommon": {
>                  "preambleInfo": {
>                    "numberOfRA-Preambles": "n52"
>                  },
>                  "powerRampingParameters": {
>                    "powerRampingStep": "dB6",
>                    "preambleInitialReceivedTargetPower": "dBm-104"
>                  },
>                  "ra-SupervisionInfo": {
>                    "preambleTransMax": "n10",
>                    "ra-ResponseWindowSize": "sf10",
>                    "mac-ContentionResolutionTimer": "sf64"
>                  },
>                  "maxHARQ-Msg3Tx": 4
>                },
>                "bcch-Config": {
>                  "modificationPeriodCoeff": "n16"
>                },
>                "pcch-Config": {
>                  "defaultPagingCycle": "rf32",
>                  "nB": "oneT"
>                },
>                "prach-Config": {
>                  "rootSequenceIndex": 128,
>                  "prach-ConfigInfo": {
>                    "prach-ConfigIndex": 3,
>                    "highSpeedFlag": false,
>                    "zeroCorrelationZoneConfig": 5,
>                    "prach-FreqOffset": 4
>                  }
>                },
>                "pdsch-ConfigCommon": {
>                  "referenceSignalPower": 0,
>                  "p-b": 0
>                },
>                "pusch-ConfigCommon": {
>                  "pusch-ConfigBasic": {
>                    "n-SB": 1,
>                    "hoppingMode": "interSubFrame",
>                    "pusch-HoppingOffset": 2,
>                    "enable64QAM": false
>                  },
>                  "ul-ReferenceSignalsPUSCH": {
>                    "groupHoppingEnabled": false,
>                    "groupAssignmentPUSCH": 0,
>                    "sequenceHoppingEnabled": false,
>                    "cyclicShift": 0
>                  }
>                },
>                "pucch-ConfigCommon": {
>                  "deltaPUCCH-Shift": "ds1",
>                  "nRB-CQI": 1,
>                  "nCS-AN": 0,
>                  "n1PUCCH-AN": 12
>                },
>                "soundingRS-UL-ConfigCommon": {
>                },
>                "uplinkPowerControlCommon": {
>                  "p0-NominalPUSCH": -85,
>                  "alpha": "al07",
>                  "p0-NominalPUCCH": -107,
>                  "deltaFList-PUCCH": {
>                    "deltaF-PUCCH-Format1": "deltaF0",
>                    "deltaF-PUCCH-Format1b": "deltaF3",
>                    "deltaF-PUCCH-Format2": "deltaF1",
>                    "deltaF-PUCCH-Format2a": "deltaF2",
>                    "deltaF-PUCCH-Format2b": "deltaF2"
>                  },
>                  "deltaPreambleMsg3": 6
>                },
>                "ul-CyclicPrefixLength": "len1"
>              },
>              "ue-TimersAndConstants": {
>                "t300": "ms2000",
>                "t301": "ms100",
>                "t310": "ms200",
>                "n310": "n1",
>                "t311": "ms10000",
>                "n311": "n1"
>              },
>              "freqInfo": {
>                "ul-CarrierFreq": 18600,
>                "ul-Bandwidth": "n50",
>                "additionalSpectrumEmission": 1
>              },
>              "timeAlignmentTimerCommon": "infinity"
>            }
>          },
>          {
>            "sib3": {
>              "cellReselectionInfoCommon": {
>                "q-Hyst": "dB2"
>              },
>              "cellReselectionServingFreqInfo": {
>                "s-NonIntraSearch": 3,
>                "threshServingLow": 2,
>                "cellReselectionPriority": 6
>              },
>              "intraFreqCellReselectionInfo": {
>                "q-RxLevMin": -61,
>                "p-Max": 23,
>                "s-IntraSearch": 5,
>                "presenceAntennaPort1": true,
>                "neighCellConfig": "01",
>                "t-ReselectionEUTRA": 1
>              }
>            }
>          }
>        ]
>      }
>    }
>  }
> }
>      }
>    }
>  }
> ]
> 2022-02-09T22:31:31.960772 [RRC    ] [I] Processing SIB2 (0/2)
> 2022-02-09T22:31:31.960774 [RRC    ] [I] SIB2 received
>
> 2022-02-09T22:31:31.960788 [PHY    ] [D] [ 2249] Configuring PRACH
> parameters
> 2022-02-09T22:31:31.960789 [PHY    ] [I] [ 2249] PRACH: cell.id=1,
> configIdx=3, rootSequence=128, zeroCorrelationConfig=5, freqOffset=4
> 2022-02-09T22:31:31.961051 [PHY    ] [I] [ 2249] Finished setting new
> PRACH configuration.
>
> 2022-02-09T22:31:31.961610 [RRC    ] [I] Proc "Cell Selection" - Completed
> with success.
>
> 2022-02-09T22:31:31.961628 [RRC    ] [I] Set Constants and Timers: N310=1,
> N311=1, t300=2000, t301=100, t310=200, t311=10000
>
> 2022-02-09T22:31:31.961642 [RRC    ] [D] SRB0 - Tx rrcConnectionRequest (6
> B)
>    0000: 58 37 f1 13 d8 18
> 2022-02-09T22:31:31.961643 [RRC    ] [D] Content:
> [
>  {
>    "UL-CCCH-Message": {
>      "message": {
> "c1": {
>  "rrcConnectionRequest": {
>    "criticalExtensions": {
>      "rrcConnectionRequest-r8": {
>        "ue-Identity": {
>          "randomValue": "1000001101111111000100010011110110000001"
>        },
>        "establishmentCause": "mo-Data",
>        "spare": "0"
>      }
>    }
>  }
> }
>      }
>    }
>  }
> ]
>
>
> 2022-02-09T22:31:32.013841 [PHY    ] [D] [ 2302] SNR=35.8 dB, RSRP=-32.6
> dBm sync=in-sync from channel estimator
> 2022-02-09T22:31:32.013842 [RRC    ] [D] SRB0 - Rx rrcConnectionSetup (20
> B)
>    0000: 60 12 9b 2e 66 1e 82 f2 e0 cc c8 60 d3 00 00 99
>    0010: 02 00 03 e0
> 2022-02-09T22:31:32.013844 [RRC    ] [D] Content:
> [
>  {
>    "DL-CCCH-Message": {
>      "message": {
> "c1": {
>  "rrcConnectionSetup": {
>    "rrc-TransactionIdentifier": 0,
>    "criticalExtensions": {
>      "c1": {
>        "rrcConnectionSetup-r8": {
>          "radioResourceConfigDedicated": {
>            "srb-ToAddModList": [
>              {
>                "srb-Identity": 1,
>                "rlc-Config": {
>                },
>                "logicalChannelConfig": {
>                }
>              }
>            ],
>            "mac-MainConfig": {
>              "explicitValue": {
>                "ul-SCH-Config": {
>                  "maxHARQ-Tx": "n4",
>                  "periodicBSR-Timer": "sf20",
>                  "retxBSR-Timer": "sf320",
>                  "ttiBundling": false
>                },
>                "timeAlignmentTimerDedicated": "infinity",
>                "phr-Config": {
>                  "setup": {
>                    "periodicPHR-Timer": "sf50",
>                    "prohibitPHR-Timer": "sf0",
>                    "dl-PathlossChange": "dB3"
>                  }
>                }
>              }
>            },
>            "physicalConfigDedicated": {
>              "pdsch-ConfigDedicated": {
>                "p-a": "dB0"
>              },
>              "pucch-ConfigDedicated": {
>                "ackNackRepetition": {
>                }
>              },
>              "pusch-ConfigDedicated": {
>                "betaOffset-ACK-Index": 6,
>                "betaOffset-RI-Index": 6,
>                "betaOffset-CQI-Index": 6
>              },
>              "uplinkPowerControlDedicated": {
>                "p0-UE-PUSCH": 0,
>                "deltaMCS-Enabled": "en0",
>                "accumulationEnabled": true,
>                "p0-UE-PUCCH": 0,
>                "pSRS-Offset": 3
>              },
>              "cqi-ReportConfig": {
>                "nomPDSCH-RS-EPRE-Offset": 0,
>                "cqi-ReportPeriodic": {
>                  "setup": {
>                    "cqi-PUCCH-ResourceIndex": 0,
>                    "cqi-pmi-ConfigIndex": 38,
>                    "cqi-FormatIndicatorPeriodic": {
>                    },
>                    "simultaneousAckNackAndCQI": true
>                  }
>                }
>              },
>              "antennaInfo": {
>                "explicitValue": {
>                  "transmissionMode": "tm1",
>                  "ue-TransmitAntennaSelection": {
>                  }
>                }
>              },
>              "schedulingRequestConfig": {
>                "setup": {
>                  "sr-PUCCH-ResourceIndex": 0,
>                  "sr-ConfigIndex": 15,
>                  "dsr-TransMax": "n64"
>                }
>              }
>            }
>          }
>        }
>      }
>    }
>  }
> }
>      }
>    }
>  }
> ]
> 2022-02-09T22:31:32.013860 [RRC    ] [I] Proc "Connection Setup" -
> Starting...
>
> 2022-02-09T22:31:32.014060 [MAC    ] [D] [ 2302] RA:    ConRes: MAC PDU
> Contains Contention Resolution ID CE
> 2022-02-09T22:31:32.014061 [MAC    ] [D] [ 2302] Msg3 buffer flushed
> 2022-02-09T22:31:32.014065 [MAC    ] [I] [ 2302] RA:    ConRes: Random
> Access Complete.     c-rnti=0x46, ta=1
> 2022-02-09T22:31:32.014066 [RRC    ] [D] Preparing RRC Connection Setup
> Complete
> 2022-02-09T22:31:32.014084 [RRC    ] [D] SRB1 - Tx
> rrcConnectionSetupComplete (25 B)
>
> 2022-02-09T22:31:32.014085 [RRC    ] [D] Content:
> [
>  {
>    "UL-DCCH-Message": {
>      "message": {
> "c1": {
>  "rrcConnectionSetupComplete": {
>    "rrc-TransactionIdentifier": 0,
>    "criticalExtensions": {
>      "c1": {
>        "rrcConnectionSetupComplete-r8": {
>          "selectedPLMN-Identity": 1,
>          "dedicatedInfoNAS": "07417108091010103254769802f07000050201d011d1"
>        }
>      }
>    }
>  }
> }
>      }
>    }
>  }
> ]
>
> 2022-02-09T22:31:32.014091 [RRC    ] [I] Finished Connection Setup
> successfully
>
> 2022-02-09T22:31:46.797740 [NAS    ] [W] Timer T3410 expired after attach
> attempt 1/5: starting T3411
>
>
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
>
>
> *## Steps to reproduce the problem ##*
> 1. start srsepc on (PC1/ USRP1)
> 2. start srsenb on (PC1/ USRP1)
> 3. start srsue on (PC2/ USRP2)
>
>
>
> --
> Gaurish Kadam
> Senior Modem Test Engineer
> Kumu Networks
>


-- 
Gaurish Kadam
Senior Modem Test Engineer
Kumu Networks
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