diff --git a/src/hnbap_common.c b/src/hnbap_common.c
new file mode 100644
index 0000000..bd7a0eb
--- /dev/null
+++ b/src/hnbap_common.c
@@ -0,0 +1,133 @@
+#include <stdint.h>
+
+#include <osmocom/core/msgb.h>
+
+#include "HNBAP-PDU.h"
+#include "hnbap_common.h"
+
+int asn_debug = 0;
+int asn1_xer_print = 0;
+
+static struct msgb *hnbap_msgb_alloc(void)
+{
+	return msgb_alloc(1024, "HNBAP Tx");
+}
+
+#if 0
+ssize_t s1ap_generate_initiating_message(uint8_t ** buffer,
+					 uint32_t * length,
+					 e_ProcedureCode procedureCode,
+					 Criticality_t criticality,
+					 asn_TYPE_descriptor_t * td, void *sptr)
+{
+
+	HNBAP_PDU_t pdu;
+	ssize_t encoded;
+
+	memset(&pdu, 0, sizeof(HNBAP_PDU_t));
+
+	pdu.present = HNBAP_PDU_PR_initiatingMessage;
+	pdu.choice.initiatingMessage.procedureCode = procedureCode;
+	pdu.choice.initiatingMessage.criticality = criticality;
+	ANY_fromType_aper(&pdu.choice.initiatingMessage.value, td, sptr);
+
+	if (asn1_xer_print)
+		xer_fprint(stdout, &asn_DEF_HNBAP_PDU, (void *)&pdu);
+
+	if ((encoded =
+	     aper_encode_to_new_buffer(&asn_DEF_HNBAP_PDU, 0, &pdu,
+				       (void **)buffer)) < 0) {
+		return -1;
+	}
+
+	*length = encoded;
+	return encoded;
+}
+#endif
+
+struct msgb *hnbap_generate_successfull_outcome(
+					   e_ProcedureCode procedureCode,
+					   Criticality_t criticality,
+					   asn_TYPE_descriptor_t * td,
+					   void *sptr)
+{
+
+	HNBAP_PDU_t pdu;
+	struct msgb *msg = hnbap_msgb_alloc();
+	asn_enc_rval_t rval;
+
+	memset(&pdu, 0, sizeof(HNBAP_PDU_t));
+	pdu.present = HNBAP_PDU_PR_successfulOutcome;
+	pdu.choice.successfulOutcome.procedureCode = procedureCode;
+	pdu.choice.successfulOutcome.criticality = criticality;
+	ANY_fromType_aper(&pdu.choice.successfulOutcome.value, td, sptr);
+
+	rval = aper_encode_to_buffer(&asn_DEF_HNBAP_PDU, &pdu,
+				     msg->data, msgb_length(msg));
+	if (rval.encoded < 0) {
+		msgb_free(msg);
+		return NULL;
+	}
+
+	msgb_put(msg, rval.encoded);
+
+	return msg;
+}
+
+#if 0
+ssize_t s1ap_generate_unsuccessfull_outcome(uint8_t ** buffer,
+					    uint32_t * length,
+					    e_ProcedureCode procedureCode,
+					    Criticality_t criticality,
+					    asn_TYPE_descriptor_t * td,
+					    void *sptr)
+{
+
+	HNBAP_PDU_t pdu;
+	ssize_t encoded;
+
+	memset(&pdu, 0, sizeof(HNBAP_PDU_t));
+
+	pdu.present = HNBAP_PDU_PR_unsuccessfulOutcome;
+	pdu.choice.successfulOutcome.procedureCode = procedureCode;
+	pdu.choice.successfulOutcome.criticality = criticality;
+	ANY_fromType_aper(&pdu.choice.successfulOutcome.value, td, sptr);
+
+	if ((encoded =
+	     aper_encode_to_new_buffer(&asn_DEF_HNBAP_PDU, 0, &pdu,
+				       (void **)buffer)) < 0) {
+		return -1;
+	}
+
+	*length = encoded;
+
+	return encoded;
+}
+#endif
+
+IE_t *hnbap_new_ie(ProtocolIE_ID_t id,
+		   Criticality_t criticality,
+		   asn_TYPE_descriptor_t * type, void *sptr)
+{
+
+	IE_t *buff;
+
+	if ((buff = malloc(sizeof(IE_t))) == NULL) {
+		// Possible error on malloc
+		return NULL;
+	}
+	memset((void *)buff, 0, sizeof(IE_t));
+
+	buff->id = id;
+	buff->criticality = criticality;
+
+	ANY_fromType_aper(&buff->value, type, sptr);
+
+	if (asn1_xer_print)
+		if (xer_fprint(stdout, &asn_DEF_IE, buff) < 0) {
+			free(buff);
+			return NULL;
+		}
+
+	return buff;
+}