More stable performance of nfapi-L2-emulator with 2 UEs, after dealing with some PNF-VNF synchronization issues.

Extension to multiple UEs. Currently being tested with two UEs. Second UE doesn't always reach the RRC Connection Reconfiguration stage.

Minor modifications. Some problem appears rarely that prevents the reception of RRCConnectionSetupComplete message at the eNB.

Works up to the reception of HI_DCI0.request at the UE-PNF. Sometimes Msg3 arrives later than expected at the eNB-VNF.

Fixed the issue with synchronization but only for the case o running both eNB (vnf) and UE (pnf) processes in the same machine. Receiving and decoding now all MIBs and SIBs1/2/3.

Testing works up to the reception of SIB1/2/3 from the UE through nfapi, but there is an issue with missing some of the nfapi messages for some frames.

Testing works until the call of callback function pnf_p7_subframe_ind. There, it never satisfies the condition if(tx_subframe_buffer->sfn_sf == sfn_sf_tx) so both sides (vnf and pnf are hanging).

making oaisim_nos1 compile

merge the implemention of Paging, RRCConnectionRelease, RRCConnectionReestablishment, E-RAB Modify, E-RAB Release

Introduce nfapi_mode variable to differentiate functionality between phy_stub_ue mode (nfapi_mode=3) and normal full stack mode (nfapi_mode!=3).

Crashes around msg4 time, but understand that need to get the ACK for the UE UL of msg3 back to UE within 4ms

Merge from RU-RAU-split and fix of frame/subframe handling.  Was very confused with the counter in the main loop, the incrementing from the USRP read library and the nFAPI frame handling.  RACH seen on wireshark and something happens on VNF

switching some LOG_I to LOG_D, fixes for RRU IF4p5. It was broken after changes in configuration procedures. Some configuration file changes.

Network search working again.  Now calling generate_dci_top every subframe, using dummy subframe if no data to transmit. MIB and SIB2/3 coming out.  UE sees cell

remove getopt call in configuration module, it changes the argv order. Fix configuration module bugs (command line arguments sometimes not properly processed