You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
{{ message }}
Repository navigation
Why can't I analyze the base station with a bandwidth of 15m? #60
I am using USRP B210. When the bandwidth is 15M, I set parameter - A 1 and the program runs normally. However, when I set parameter A to 2, the program begins to show the results shown in the figure. Under other bandwidths, the setting of parameter A does not affect program operation
I hope you can copy and paste the whole terminal log including your executed command. By looking at your picture, is looks like there is no cell in your frequency or the signal power of this cell is too low
Found Cell_id: 0 FDD, CP: Normal , DetectRatio= 0% PSR=0.00, Power=-inf dBm
Decoding PBCH for cell 1 (N_id_2=1)
Setting sampling rate 15.36 MHz
[INFO] [B200] Asking for clock rate 61.440000 MHz...
[ERROR] [UHD RF] ValueError: current master clock rate (61.440000 MHz) exceeds maximum possible master clock rate (30.720000 MHz) when using 2 RX channels
[WARNING] [MULTI_USRP] The hardware does not support the requested RX sample rate:
Target sample rate: 15.360000 MSps
Actual sample rate: 11.520000 MSps
[WARNING] [MULTI_USRP] The hardware does not support the requested RX sample rate:
Hi, the problem seems to be the sampling rate on USRP was not correctly handled.
"[ERROR] [UHD RF] ValueError: current master clock rate (61.440000 MHz) exceeds maximum possible master clock rate (30.720000 MHz) when using 2 RX channels"
Could you try another USRP?
I have the same problem. I made a little bit of progress and want to share it.
eNB in my area also has 15Mhz BW.
Band is B66.
eNB uses MIMO 4 TX and 4 RX.
I could get DCI at least by changing one related to USE_LTE_RATES line in CMakeLists.txt as follows:
LTESniffer does not work perfectly with the eNB in my area. I think that is because srsRAN does not support MIMO with 4 TX antennas. But I am fine with that cause what I need is DCI. Hope this helps for you.
Activity
hdtuanss commentedon Mar 21, 2024
Hi, please share your terminal log and hardware setup
Thanks
stuitee commentedon Mar 21, 2024
I am using USRP B210. When the bandwidth is 15M, I set parameter - A 1 and the program runs normally. However, when I set parameter A to 2, the program begins to show the results shown in the figure. Under other bandwidths, the setting of parameter A does not affect program operation
hdtuanss commentedon Mar 21, 2024
I hope you can copy and paste the whole terminal log including your executed command. By looking at your picture, is looks like there is no cell in your frequency or the signal power of this cell is too low
stuitee commentedon Mar 22, 2024
root@hmily-ThinkPad-P16-Gen-2:/home/hmily/LTESniffer/build/src# ./LTESniffer -A 1 -W 8 -g 76 -f 1870e6 -C -m 0
LTESniffer
Fri_Mar_22_08.59.22_2024.
Creating Phy
Creating 8 Worker threads
Opening RF device with 1 RX antennas...
Available RF device list: UHD
Trying to open RF device 'UHD'
[INFO] [UHD] linux; GNU C++ version 11.4.0; Boost_107400; UHD_4.6.0.0-3-g080b1baa
[INFO] [LOGGING] Fastpath logging disabled at runtime.
Opening USRP channels=1, args: type=b200,master_clock_rate=23.04e6
[INFO] [UHD RF] RF UHD Generic instance constructed
[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.
RF device 'UHD' successfully opened
Tunning receiver to 1870.000 MHz
Searching for cell...
/home/hmily/LTESniffer/build/srsRAN-src/lib/src/phy/rf/rf_utils.c:207: Could not find any cell in this frequency
Cell not found after 0 trials. Trying again (Press Ctrl+C to exit)
Searching for cell...
Found Cell_id: 0 FDD, CP: Normal , DetectRatio= 0% PSR=0.00, Power=-inf dBm
*Found Cell_id: 1 FDD, CP: Normal , DetectRatio=83% PSR=2.18, Power=55.5 dBm
Found Cell_id: 0 FDD, CP: Normal , DetectRatio= 0% PSR=0.00, Power=-inf dBm
Decoding PBCH for cell 1 (N_id_2=1)
Cell not found after 1 trials. Trying again (Press Ctrl+C to exit)
Searching for cell...
Found Cell_id: 0 FDD, CP: Normal , DetectRatio= 0% PSR=0.00, Power=-inf dBm
*Found Cell_id: 1 FDD, CP: Normal , DetectRatio=100% PSR=4.23, Power=62.0 dBm
Found Cell_id: 0 FDD, CP: Normal , DetectRatio= 0% PSR=0.00, Power=-inf dBm
Decoding PBCH for cell 1 (N_id_2=1)
Setting sampling rate 15.36 MHz
[INFO] [B200] Asking for clock rate 61.440000 MHz...
[INFO] [B200] Actually got clock rate 61.440000 MHz.
Finding PSS... Peak: 1.03286, FrameCnt: 0 State: 0
Finding PSS... Peak: 1.06344, FrameCnt: 0 State: 0
Finding PSS... Peak: 1.22075, FrameCnt: 0 State: 0
Finding PSS... Peak: 1.07674, FrameCnt: 0 State: 0
Finding PSS... Peak: 7.67707, FrameCnt: 0 State: 1
Type: FDD
PCI: 1
Nof ports: 1
CP: Normal
PRB: 75
PHICH Length: Normal
PHICH Resources: 1/6
SFN: 124
Decoded MIB. SFN: 124, offset: 1
[08:59:29] Processed 1000/1000 subframes
[08:59:30] Processed 1000/1000 subframes
[08:59:31] Processed 1000/1000 subframes
[08:59:32] Processed 1000/1000 subframes
Finding PSS... Peak: 1.00605, FrameCnt: 948 State: 0
Finding PSS... Peak: 7.87689, FrameCnt: 0 State: 1
Type: FDD
PCI: 1
Nof ports: 1
CP: Normal
PRB: 75
PHICH Length: Normal
PHICH Resources: 1/6
SFN: 604
Decoded MIB. SFN: 604, offset: 1
[08:59:33] Processed 1000/1000 subframes
[08:59:34] Processed 1000/1000 subframes
^CLTESniffer_Core: Exiting...
Num RNTI Table Active New TX ReTX Success HARQ Normal W_MIMO W_pinfor Other
Num RNTI Table Active New TX ReTX Success HARQ Normal W_MIMO W_pinfor Other
1 75 Unknown 591 591 0 109(18%) 0 0 0 0 0
[256Tracking] Total: 0 RNTIs are 64QAM table, 0 RNTIs are 256QAM table, 1 RNTIs are Unknown
Destroyed Phy
Skipped subframe: 0 / 6949
nof_decoded_locations, nof_cce, nof_missed_cce, nof_subframes, nof_subframe_collisions_dw, nof_subframe_collisions_up, time, nof_locations
4380, 81240, 8, 5416, 0, 0, 0.000000, 140816
Skipped subframes: 0 (0%)
Saving MAC PCAP file
Deleted DL Sniffer core
stuitee commentedon Mar 22, 2024
root@hmily-ThinkPad-P16-Gen-2:/home/hmily/LTESniffer/build/src# ./LTESniffer -A 2 -W 8 -g 76 -f 1870e6 -C -m 0
LTESniffer
Fri_Mar_22_08.59.43_2024.
Creating Phy
Creating 8 Worker threads
Opening RF device with 2 RX antennas...
Available RF device list: UHD
Trying to open RF device 'UHD'
[INFO] [UHD] linux; GNU C++ version 11.4.0; Boost_107400; UHD_4.6.0.0-3-g080b1baa
[INFO] [LOGGING] Fastpath logging disabled at runtime.
Opening USRP channels=2, args: type=b200,master_clock_rate=23.04e6
[INFO] [UHD RF] RF UHD Generic instance constructed
[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.
[INFO] [MULTI_USRP] 1) catch time transition at pps edge
[INFO] [MULTI_USRP] 2) set times next pps (synchronously)
RF device 'UHD' successfully opened
Tunning receiver to 1870.000 MHz
Searching for cell...
Found Cell_id: 0 FDD, CP: Normal , DetectRatio= 0% PSR=0.00, Power=-inf dBm
*Found Cell_id: 1 FDD, CP: Normal , DetectRatio=88% PSR=2.44, Power=56.2 dBm
Found Cell_id: 0 FDD, CP: Normal , DetectRatio= 0% PSR=0.00, Power=-inf dBm
Decoding PBCH for cell 1 (N_id_2=1)
Cell not found after 0 trials. Trying again (Press Ctrl+C to exit)
Searching for cell...
Found Cell_id: 0 FDD, CP: Normal , DetectRatio= 0% PSR=0.00, Power=-inf dBm
*Found Cell_id: 1 FDD, CP: Normal , DetectRatio=80% PSR=2.05, Power=55.5 dBm
Found Cell_id: 0 FDD, CP: Normal , DetectRatio= 0% PSR=0.00, Power=-inf dBm
Decoding PBCH for cell 1 (N_id_2=1)
Cell not found after 1 trials. Trying again (Press Ctrl+C to exit)
Searching for cell...
Found Cell_id: 0 FDD, CP: Normal , DetectRatio= 0% PSR=0.00, Power=-inf dBm
*Found Cell_id: 1 TDD, CP: Normal , DetectRatio=80% PSR=2.20, Power=56.3 dBm
Found Cell_id: 0 FDD, CP: Normal , DetectRatio= 0% PSR=0.00, Power=-inf dBm
Decoding PBCH for cell 1 (N_id_2=1)
Cell not found after 2 trials. Trying again (Press Ctrl+C to exit)
Searching for cell...
Found Cell_id: 0 FDD, CP: Normal , DetectRatio= 0% PSR=0.00, Power=-inf dBm
*Found Cell_id: 1 FDD, CP: Normal , DetectRatio=100% PSR=4.83, Power=64.4 dBm
Found Cell_id: 0 FDD, CP: Normal , DetectRatio= 0% PSR=0.00, Power=-inf dBm
Decoding PBCH for cell 1 (N_id_2=1)
Setting sampling rate 15.36 MHz
[INFO] [B200] Asking for clock rate 61.440000 MHz...
[ERROR] [UHD RF] ValueError: current master clock rate (61.440000 MHz) exceeds maximum possible master clock rate (30.720000 MHz) when using 2 RX channels
[WARNING] [MULTI_USRP] The hardware does not support the requested RX sample rate:
Target sample rate: 15.360000 MSps
Actual sample rate: 11.520000 MSps
[WARNING] [MULTI_USRP] The hardware does not support the requested RX sample rate:
Target sample rate: 15.360000 MSps
Actual sample rate: 11.520000 MSps
Finding PSS... Peak: 1.64778, FrameCnt: 0 State: 0
Finding PSS... Peak: 1.47886, FrameCnt: 0 State: 0
Finding PSS... Peak: 1.05018, FrameCnt: 0 State: 0
Finding PSS... Peak: 1.22536, FrameCnt: 0 State: 0
hdtuanss commentedon Apr 5, 2024
Hi, the problem seems to be the sampling rate on USRP was not correctly handled.
"[ERROR] [UHD RF] ValueError: current master clock rate (61.440000 MHz) exceeds maximum possible master clock rate (30.720000 MHz) when using 2 RX channels"
Could you try another USRP?
stuitee commentedon Apr 7, 2024
I tested with multiple USRP B210's separately and they all gave the same error.
hdtuanss commentedon Apr 8, 2024
Could you please modify the following code in "LTESniffer/build/srsRAN-src/lib/src/phy/common/phy_common.c" and build the project again?
hdtuanss commentedon Apr 25, 2024
Hi, any update on this problem?
stuitee commentedon Jun 3, 2024
#define FORCE_STANDARD_RATE
When I change the above code, the program doesn't work anymore.
DancingSW commentedon Oct 31, 2024
Hi all,
I have the same problem. I made a little bit of progress and want to share it.
I could get DCI at least by changing one related to USE_LTE_RATES line in CMakeLists.txt as follows:
LTESniffer does not work perfectly with the eNB in my area. I think that is because srsRAN does not support MIMO with 4 TX antennas. But I am fine with that cause what I need is DCI. Hope this helps for you.
