diff --git a/lib/include/srsran/common/phy_cfg_nr.h b/lib/include/srsran/common/phy_cfg_nr.h
index c61dc245d..644614ed5 100644
--- a/lib/include/srsran/common/phy_cfg_nr.h
+++ b/lib/include/srsran/common/phy_cfg_nr.h
@@ -133,6 +133,26 @@ struct phy_cfg_nr_t {
                  srsran_uci_cfg_nr_t&          uci_cfg,
                  srsran_pucch_nr_resource_t&   resource) const;
 };
+
+struct phy_cfg_nr_default_t : public phy_cfg_nr_t {
+  /**
+   * @brief DL reference configurations defined in TS 38.101-4 User Equipment (UE) radio transmission and reception;
+   * Part 4: Performance requirements
+   */
+  typedef enum {
+    R_PDSCH_2_1_1 = 0, // R.PDSCH.2-1.1 TDD
+  } dl_reference_t;
+
+  /**
+   * @brief UL reference configurations defined in TS 38.104 Base Station (BS) radio transmission and reception
+   */
+  typedef enum {
+    G_FR1_A3_8 = 0, // G-FR1-A3-8
+  } ul_reference_t;
+
+  phy_cfg_nr_default_t(const dl_reference_t& dl_reference, const ul_reference_t& ul_reference);
+};
+
 } // namespace srsran
 
 #endif // SRSRAN_PHY_CFG_NR_H