diff --git a/lib/include/srslte/interfaces/nr_common_interface_types.h b/lib/include/srslte/interfaces/nr_common_interface_types.h
new file mode 100644
index 000000000..3b15a6332
--- /dev/null
+++ b/lib/include/srslte/interfaces/nr_common_interface_types.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2013-2020 Software Radio Systems Limited
+ *
+ * This file is part of srsLTE.
+ *
+ * srsLTE is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * srsLTE is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * A copy of the GNU Affero General Public License can be found in
+ * the LICENSE file in the top-level directory of this distribution
+ * and at http://www.gnu.org/licenses/.
+ *
+ */
+
+#ifndef SRSLTE_COMMON_NR_H
+#define SRSLTE_COMMON_NR_H
+
+namespace srslte {
+
+// NR Radio Bearer Id
+
+enum rb_id_nr_t { NR_SRB0, NR_SRB1, NR_SRB2, NR_SRB3, NR_DRB1, RB_ID_NR_N_ITEMS };
+inline const char* to_string(rb_id_nr_t rb_id)
+{
+  const static char* names[] = {"SRB0", "SRB1", "SRB2", "SRB3", "DRB1"};
+  return (rb_id < rb_id_nr_t::RB_ID_NR_N_ITEMS) ? names[rb_id] : "invalid bearer id";
+}
+inline bool is_srb(rb_id_nr_t lcid)
+{
+  return lcid <= rb_id_nr_t::NR_SRB3;
+}
+inline bool is_drb(rb_id_nr_t lcid)
+{
+  return not is_srb(lcid) and lcid <= rb_id_nr_t::RB_ID_NR_N_ITEMS;
+}
+inline int get_drb_id(rb_id_nr_t rb_id)
+{
+  return is_drb(rb_id) ? (rb_id - 3) : -1;
+}
+
+} // namespace srslte
+
+#endif // SRSLTE_NR_COMMON_INTERFACE_TYPES_H
diff --git a/srsenb/hdr/stack/upper/common_enb.h b/srsenb/hdr/stack/upper/common_enb.h
index 6a13563ec..36828a9ba 100644
--- a/srsenb/hdr/stack/upper/common_enb.h
+++ b/srsenb/hdr/stack/upper/common_enb.h
@@ -51,8 +51,11 @@ enum rb_id_t {
   RB_ID_DRB8,
   RB_ID_N_ITEMS,
 };
-static const char* rb_id_text[] =
-    {"SRB0", "SRB1", "SRB2", "DRB1", "DRB2", "DRB3", "DRB4", "DRB5", "DRB6", "DRB7", "DRB8"};
+inline const char* to_string(rb_id_t rb_id)
+{
+  const static char* names[] = {"SRB0", "SRB1", "SRB2", "DRB1", "DRB2", "DRB3", "DRB4", "DRB5", "DRB6", "DRB7", "DRB8"};
+  return (rb_id < RB_ID_N_ITEMS) ? names[rb_id] : "invalid bearer id";
+}
 
 // Cat 3 UE - Max number of DL-SCH transport block bits received within a TTI
 // 3GPP 36.306 Table 4.1.1
diff --git a/srsenb/src/stack/rrc/rrc.cc b/srsenb/src/stack/rrc/rrc.cc
index 587549132..387415dba 100644
--- a/srsenb/src/stack/rrc/rrc.cc
+++ b/srsenb/src/stack/rrc/rrc.cc
@@ -531,7 +531,7 @@ void rrc::parse_ul_dcch(uint16_t rnti, uint32_t lcid, srslte::unique_byte_buffer
     if (user_it != users.end()) {
       user_it->second->parse_ul_dcch(lcid, std::move(pdu));
     } else {
-      rrc_log->error("Processing %s: Unknown rnti=0x%x\n", rb_id_text[lcid], rnti);
+      rrc_log->error("Processing %s: Unknown rnti=0x%x\n", srsenb::to_string((rb_id_t)lcid), rnti);
     }
   }
 }
@@ -797,7 +797,7 @@ void rrc::tti_clock()
   while (rx_pdu_queue.try_pop(&p)) {
     // print Rx PDU
     if (p.pdu != nullptr) {
-      rrc_log->info_hex(p.pdu->msg, p.pdu->N_bytes, "Rx %s PDU", rb_id_text[p.lcid]);
+      rrc_log->info_hex(p.pdu->msg, p.pdu->N_bytes, "Rx %s PDU", to_string((rb_id_t)p.lcid));
     }
 
     // check if user exists
diff --git a/srsenb/src/stack/rrc/rrc_ue.cc b/srsenb/src/stack/rrc/rrc_ue.cc
index c84493975..e94e8cb87 100644
--- a/srsenb/src/stack/rrc/rrc_ue.cc
+++ b/srsenb/src/stack/rrc/rrc_ue.cc
@@ -161,7 +161,8 @@ void rrc::ue::parse_ul_dcch(uint32_t lcid, srslte::unique_byte_buffer_t pdu)
     return;
   }
 
-  parent->log_rrc_message(rb_id_text[lcid], Rx, pdu.get(), ul_dcch_msg, ul_dcch_msg.msg.c1().type().to_string());
+  parent->log_rrc_message(
+      srsenb::to_string((rb_id_t)lcid), Rx, pdu.get(), ul_dcch_msg, ul_dcch_msg.msg.c1().type().to_string());
 
   // reuse PDU
   pdu->clear(); // TODO: name collision with byte_buffer reset
diff --git a/srsenb/src/stack/upper/pdcp.cc b/srsenb/src/stack/upper/pdcp.cc
index 56f69cf95..989aa9721 100644
--- a/srsenb/src/stack/upper/pdcp.cc
+++ b/srsenb/src/stack/upper/pdcp.cc
@@ -193,7 +193,7 @@ void pdcp::user_interface_rrc::write_pdu_pcch(srslte::unique_byte_buffer_t pdu)
 
 std::string pdcp::user_interface_rrc::get_rb_name(uint32_t lcid)
 {
-  return std::string(rb_id_text[lcid]);
+  return to_string((rb_id_t)lcid);
 }
 
 } // namespace srsenb
diff --git a/srsenb/src/stack/upper/rlc.cc b/srsenb/src/stack/upper/rlc.cc
index f6d623d5d..95b3817a3 100644
--- a/srsenb/src/stack/upper/rlc.cc
+++ b/srsenb/src/stack/upper/rlc.cc
@@ -184,7 +184,7 @@ void rlc::read_pdu_pcch(uint8_t* payload, uint32_t buffer_size)
 
 int rlc::read_pdu(uint16_t rnti, uint32_t lcid, uint8_t* payload, uint32_t nof_bytes)
 {
-  int      ret;
+  int ret;
 
   pthread_rwlock_rdlock(&rwlock);
   if (users.count(rnti)) {
@@ -273,7 +273,7 @@ void rlc::user_interface::write_pdu_pcch(srslte::unique_byte_buffer_t sdu)
 
 std::string rlc::user_interface::get_rb_name(uint32_t lcid)
 {
-  return std::string(rb_id_text[lcid]);
+  return to_string((rb_id_t)lcid);
 }
 
 } // namespace srsenb
diff --git a/srsue/hdr/stack/rrc/rrc_nr.h b/srsue/hdr/stack/rrc/rrc_nr.h
index 5887c7858..8f2b16e87 100644
--- a/srsue/hdr/stack/rrc/rrc_nr.h
+++ b/srsue/hdr/stack/rrc/rrc_nr.h
@@ -25,6 +25,7 @@
 #include "srslte/asn1/rrc_nr_asn1.h"
 #include "srslte/common/block_queue.h"
 #include "srslte/common/buffer_pool.h"
+#include "srslte/interfaces/nr_common_interface_types.h"
 #include "srslte/interfaces/ue_interfaces.h"
 #include "srslte/interfaces/ue_nr_interfaces.h"
 #include "srsue/hdr/stack/upper/gw.h"
@@ -134,17 +135,7 @@ private:
   // RRC constants and timers
   srslte::timer_handler* timers = nullptr;
 
-  // Radio bearers
-  std::map<int, std::string> rb_id_t = {{0, "SRB0"}, {1, "SRB1"}, {2, "SRB2"}, {3, "SRB3"}, {4, "DRB1"}};
-
-  std::string get_rb_name(uint32_t lcid) final
-  {
-    if (lcid < rb_id_t.size()) {
-      return rb_id_t.at(lcid);
-    } else {
-      return "INVALID_RB";
-    }
-  }
+  std::string get_rb_name(uint32_t lcid) final { return srslte::to_string((srslte::rb_id_nr_t)lcid); }
 
   bool initiated = false;
 };