46c120651f
This commit introduces ZMQ-based radio library. Each pair of RX/TX antennas is represented by a ZMQ REQ/REP socket pair which streams continuous IQ samples from radio start until stop. Usage: Simplest configuration is to connect OAI NR UE to OAI GNB with the same number of antennas - by inverting the RX and TX channels in ZMQ radio configuration the gNBs TX is mapped to UEs RX antennas and vice versa.
1.5 KiB
Overview
This library implements ZMQ-based radio driver
Architecture
The radio simulates RX/TX pairs between different processes over network or on the same machine as ZMQ REQ/REP socket pairs. All the antennas have to be configured and connected before the simulation can start.
Limitations
You cannot reconnect a device once the simulation has started. The simulation has to be restarted from scratch in order to add devices or restart a process.
Requirements
Depends on zmq library being installed in the system. On ubuntu: libzmq3-dev, on RHEL/Fedora: zeromq-devel
Usage
Simple 1-to-1 antenna mapping
Add --device.name oai_zmqdevif to load the library in UE / gNB process. Add --zmq.[0].tx_channels <channels> and
--zmq.[0].rx_channels <channels> to define ZMQ REQ/REP pairs.
On the opposite side, load the library like specified above but invert the rx and tx channels. This way all
antennas of UE will be directly mapped to all antennas of the gNB.
Example:
sudo ./nr-uesoftmodem -r 106 --numerology 1 --band 78 -C 3619200000 --device.name oai_zmqdevif --zmq.[0].tx_channels tcp://127.0.0.1:4557 --zmq.[0].rx_channels tcp://127.0.0.1:4556 --ssb 516
sudo ./nr-softmodem -O ../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.fr1.106PRB.usrpb210.conf --gNBs.[0].min_rxtxtime 6 --device.name oai_zmqdevif --zmq.[0].tx_channels tcp://127.0.0.1:4556 --zmq.[0].rx_channels tcp://127.0.0.1:4557