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Merge remote-tracking branch 'origin/telnet-o1' into integration_2024_w50 (!3125)

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Add support for O1 in O-DU via telnet

This change set adds a simple telnet interface to nr-softmodem. Together
with oai/o1-adapter>, this implements a part of the O1 interface, for
the DU only. Currently supported uses cases:

- some stats are send to an SMO (such as bandwidth, PLMN, frequency, ...)
- re-configuration of bandwidth, frequency
- stop/start of the softmodem, while keeping the CU and L2 running
- the o1-adapter implements two alarms, load overload and base station
  offline, using this interface.

It is possible to use the telnet interface by itself (i.e., "o1" without
the o1-adapter). To do this, compile with telnet support (./build_oai
--build-lib telnetsrv) and start the nr-softmodem with O1 module
(./nr-softmodem --telnetsrv --telnetsrv.shrmod o1). You can then do the
following:

- see some statistics as exposed to o1-adapter, in JSON: echo o1 stats | nc 127.0.0.1 9090 && echo
- stop the L1: echo o1 stop_modem | nc 127.0.0.1 9090 && echo
- reconfigure bandwidth: e.g., echo o1 bwconfig 20 | nc 127.0.0.1 9090 && echo (also supported: 40, 60, 100)
- start the L1: echo o1 start_modem | nc 127.0.0.1 9090 && echo

Note that the reconfiguration works with split-8 radios. Notably, it
does not work yet out-of-the-box with 7.2 radios, because they have to
be manually reconfigured on bandwith/frequency switch. The planned
M-plane should allow such use case, though.

To help with the above, this branch also includes fixes (for more
information, refer to the corresponding commits):

- fixes for stopping the L1, notably stop threads in right order, stop
  thread pool of RU
- collect some general MAC metrics, fix some bugs in MAC
- fix problems in F1AP gNB-DU configuration update message, update test
- fix some problems in RRC
This commit is contained in:
Robert Schmidt
2024-12-16 19:42:28 +01:00
parent a2613d5604 59e6a33d2b
commit 0d4c7364b4
35 changed files with 944 additions and 168 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/PHY/INIT/nr_init_ru.c
+4
View File
@@ -180,4 +180,8 @@ void nr_phy_free_RU(RU_t *ru)
free_and_zero(ru->common.beam_id[i]);
free_and_zero(ru->common.beam_id);
}
PHY_VARS_gNB *gNB0 = ru->gNB_list[0];
gNB0->num_RU--;
DevAssert(gNB0->num_RU >= 0);
}
openair1/PHY/NR_REFSIG/ul_ref_seq_nr.c
+2 -4
View File
@@ -177,10 +177,9 @@ c16_t *gNB_dmrs_lowpaprtype1_sequence[U_GROUP_NUMBER][V_BASE_SEQUENCE_NUMBER][MA
void generate_lowpapr_typ1_refsig_sequences(unsigned int scaling)
{
/* prevent multiple calls, relevant when both UE & gNB initialize this */
static bool already_called = false;
bool already_called = gNB_dmrs_lowpaprtype1_sequence[0][0][0] != NULL;
if (already_called)
return;
already_called = true;
unsigned int v = 0; // sequence hopping and group hopping are not supported yet
for (unsigned int Msc_RS = 0; Msc_RS <= INDEX_SB_LESS_32; Msc_RS++) {
@@ -200,9 +199,8 @@ c16_t *dmrs_lowpaprtype1_ul_ref_sig[U_GROUP_NUMBER][V_BASE_SEQUENCE_NUMBER][MAX_
void generate_ul_reference_signal_sequences(unsigned int scaling)
{
/* prevent multiple calls, relevant when both UE & gNB initialize this */
static bool already_called = false;
bool already_called = rv_ul_ref_sig[0][0][0] != NULL;
if (already_called) return;
already_called = true;
unsigned int u,v,Msc_RS;
openair1/SIMULATION/NR_PHY/prachsim.c
+1
View File
@@ -467,6 +467,7 @@ int main(int argc, char **argv){
ru->nb_rx = n_rx;
ru->num_gNB = 1;
ru->gNB_list[0] = gNB;
gNB->num_RU = 1;
gNB->gNB_config.carrier_config.num_tx_ant.value = 1;
gNB->gNB_config.carrier_config.num_rx_ant.value = 1;
if (mu == 0)