From 83149e5100ec91874f41539533b79c2e9e211aeb Mon Sep 17 00:00:00 2001
From: Robert Schmidt <robert.schmidt@openairinterface.org>
Date: Thu, 24 Mar 2022 18:46:22 +0100
Subject: [PATCH] Base graph selection: create function in nr_common.c

---
 common/utils/nr/nr_common.c                 | 7 +++++++
 common/utils/nr/nr_common.h                 | 1 +
 openair1/PHY/NR_TRANSPORT/nr_dlsch_coding.c | 5 +----
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/common/utils/nr/nr_common.c b/common/utils/nr/nr_common.c
index 6add03c324..1f925d08f0 100644
--- a/common/utils/nr/nr_common.c
+++ b/common/utils/nr/nr_common.c
@@ -494,3 +494,10 @@ void SLIV2SL(int SLIV,int *S,int *L) {
     *S=13-SLIVmod14;
   }
 }
+
+int get_BG(uint32_t A, float code_rate) {
+  if ((A <=292) || ((A<=3824) && (code_rate <= 0.6667)) || code_rate <= 0.25)
+    return 2;
+  else
+    return 1;
+}
diff --git a/common/utils/nr/nr_common.h b/common/utils/nr/nr_common.h
index 5f7f670ce9..c286c0ad6a 100644
--- a/common/utils/nr/nr_common.h
+++ b/common/utils/nr/nr_common.h
@@ -76,6 +76,7 @@ uint16_t SL_to_bitmap(int startSymbolIndex, int nrOfSymbols);
 int get_nb_periods_per_frame(uint8_t tdd_period);
 int get_supported_band_index(int scs, int band, int n_rbs);
 long rrc_get_max_nr_csrs(uint8_t max_rbs, long b_SRS);
+int get_BG(uint32_t A, float code_rate);
 
 #define CEILIDIV(a,b) ((a+b-1)/b)
 #define ROUNDIDIV(a,b) (((a<<1)+b)/(b<<1))
diff --git a/openair1/PHY/NR_TRANSPORT/nr_dlsch_coding.c b/openair1/PHY/NR_TRANSPORT/nr_dlsch_coding.c
index f0f9f4fe34..0e82de276d 100644
--- a/openair1/PHY/NR_TRANSPORT/nr_dlsch_coding.c
+++ b/openair1/PHY/NR_TRANSPORT/nr_dlsch_coding.c
@@ -380,10 +380,7 @@ int nr_dlsch_encoding(PHY_VARS_gNB *gNB,
   float Coderate = (float) rel15->targetCodeRate[0] / 10240.0f;
   LOG_D(PHY,"DLSCH Coderate %f\n",Coderate);
 
-  if ((A <=292) || ((A<=3824) && (Coderate <= 0.6667)) || Coderate <= 0.25)
-    impp.BG = 2;
-  else
-    impp.BG = 1;
+  impp.BG = get_BG(A, Coderate);
 
   start_meas(dlsch_segmentation_stats);
   impp.Kb = nr_segmentation(harq->b, harq->c, harq->B, &impp.n_segments, &impp.K, impp.Zc, &impp.F, impp.BG);