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**Q18: I get error, "problem Receiving samples". What do I do?**
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A18. This error means that there is real-time issue with sample acquisition. It happens as USB3 transfers are very sensitive to real-time performance. You should make sure all the steps related to CPU sleep, etc in HW/SW configuration are followed here, https://gitlab.eurecom.fr/oai/openairinterface5g/wikis/OpenAirSoftwareSupport. You can also turn off WiFi/Bluetooth driver or in extreme case run your Linux without X Windows. Also, make sure your USRP is connected to USB3 port. If the problem persists, try doing USRP TX/RX benchmark tests and try to run OAI in 5 MHz(set N_RB_DL = 25) in eNodeB config file. You need to use latest i5/i7 (4 core minimum) PC for running OAI to avoid these kind of issues. You can also play around with CPU Affinity (see build_oai -h) to partition CPUs between lte-softmodem and USRP threads.
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A18. This error means that there is real-time issue with sample acquisition. It happens as USB3 transfers are very sensitive to real-time performance. You should make sure all the steps related to CPU sleep, etc in HW/SW configuration are followed here, https://gitlab.eurecom.fr/oai/openairinterface5g/wikis/OpenAirSoftwareSupport, https://gitlab.eurecom.fr/oai/openairinterface5g/wikis/OpenAirKernelMainSetup#ubuntu-14043-ltslinux-kernel-version-319-recommended. You can also turn off WiFi/Bluetooth driver or in extreme case run your Linux without X Windows. Also, make sure your USRP is connected to USB3 port. If the problem persists, try doing USRP TX/RX benchmark tests and try to run OAI in 5 MHz(set N_RB_DL = 25) in eNodeB config file. You need to use latest i5/i7 (4 core minimum) PC for running OAI to avoid these kind of issues. You can also play around with CPU Affinity (see build_oai -h) to partition CPUs between lte-softmodem and USRP threads.
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**Q19: Phone is connected but does not want to accept IP Address. **
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