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Allow >1 channel models on rfsim server

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Use `rfsimu_channel_ue1`, `rfsimu_channel_ue2`, etc. if you want to
use different channel models for each client. The client connection
order determines its channel model name.
This commit is contained in:
Bartosz Podrygajlo
2025-02-28 13:53:10 +01:00
parent 953e4a448b
commit 8672513517
2 changed files with 14 additions and 4 deletions
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openair1/SIMULATION/TOOLS/DOC/channel_simulation.md
+5 -1
View File
@@ -90,7 +90,11 @@ channelmod = {
}; };
``` ```
where `rfsimu_channel_ue0` will be activated on server side (i.e. eNB/gNB) for uplink and `rfsimu_channel_enB0` will be activated on client side (i.e. UE) for downlink. where `rfsimu_channel_ue0` will be activated on server side for uplink and `rfsimu_channel_enB0` will be activated on client side for downlink.
Use `rfsimu_channel_ue1`, `rfsimu_channel_ue2`, etc. if you want to use different channel models for each client. The client connection order determines its channel model.
The server could be either the UE or the gNB, the channel name suffix does not depend on the application but on the rfsimulators role (server/client).
## Edit the configuration file ## Edit the configuration file
radio/rfsimulator/simulator.c
+9 -3
View File
@@ -260,11 +260,17 @@ static int allocCirBuf(rfsimulator_state_t *bridge, int sock)
tableNor(rand); tableNor(rand);
init_done=true; init_done=true;
} }
char *modelname = (bridge->role == SIMU_ROLE_SERVER) ? "rfsimu_channel_ue0" : "rfsimu_channel_enB0"; char modelname[30];
snprintf(modelname, sizeofArray(modelname), "rfsimu_channel_%s%d", (bridge->role == SIMU_ROLE_SERVER) ? "ue" : "enB", nb_ue);
ptr->channel_model = find_channel_desc_fromname(modelname); // path_loss in dB ptr->channel_model = find_channel_desc_fromname(modelname); // path_loss in dB
if (!ptr->channel_model) { if (!ptr->channel_model) {
LOG_E(HW, "Channel model %s not found, check config file\n", modelname); // Use legacy method to find channel model - this will use the same channel model for all clients
return -1; char *legacy_model_name = (bridge->role == SIMU_ROLE_SERVER) ? "rfsimu_channel_ue0" : "rfsimu_channel_enB0";
ptr->channel_model = find_channel_desc_fromname(legacy_model_name);
if (!ptr->channel_model) {
LOG_E(HW, "Channel model %s/%s not found, check config file\n", modelname, legacy_model_name);
return -1;
}
} }
set_channeldesc_owner(ptr->channel_model, RFSIMU_MODULEID); set_channeldesc_owner(ptr->channel_model, RFSIMU_MODULEID);