diff --git a/core/mac/src/include/parser_api.h b/core/mac/src/include/parser_api.h
index 57d68bfa7f50..4c05a4dfa231 100644
--- a/core/mac/src/include/parser_api.h
+++ b/core/mac/src/include/parser_api.h
@@ -60,8 +60,11 @@
 #define MBO_IE_ASSOC_DISALLOWED_SUBATTR_ID 0x04
 
 /* QCN IE definitions */
-#define QCN_IE_VERSION_SUBATTR_ID   1
-#define QCN_IE_VERSION_SUBATTR_LEN  2
+#define QCN_IE_HDR_LEN     6
+
+#define QCN_IE_VERSION_SUBATTR_ID        1
+#define QCN_IE_VERSION_SUBATTR_DATA_LEN  2
+#define QCN_IE_VERSION_SUBATTR_LEN       4
 #define QCN_IE_VERSION_SUPPORTED    1
 #define QCN_IE_SUBVERSION_SUPPORTED 0
 
diff --git a/core/mac/src/pe/include/lim_api.h b/core/mac/src/pe/include/lim_api.h
index 50ad15ebc9b3..df37c4d05de2 100644
--- a/core/mac/src/pe/include/lim_api.h
+++ b/core/mac/src/pe/include/lim_api.h
@@ -381,5 +381,7 @@ QDF_STATUS lim_update_ext_cap_ie(tpAniSirGlobal mac_ctx,
 
 void lim_log(tpAniSirGlobal pMac, uint32_t loglevel,
 		const char *pString, ...);
+QDF_STATUS lim_add_qcn_ie(tpAniSirGlobal mac_ctx, uint8_t *ie_data,
+							uint16_t *ie_len);
 /************************************************************/
 #endif /* __LIM_API_H */
diff --git a/core/mac/src/pe/lim/lim_api.c b/core/mac/src/pe/lim/lim_api.c
index 2efc612400a3..704e64265366 100644
--- a/core/mac/src/pe/lim/lim_api.c
+++ b/core/mac/src/pe/lim/lim_api.c
@@ -2500,3 +2500,38 @@ void lim_log(tpAniSirGlobal pMac, uint32_t loglevel, const char *pString, ...)
 #endif
 }
 
+/**
+ * lim_add_qcn_ie() - Add QCN IE to a given IE buffer
+ *
+ * @mac_ctx: Pointer to Global MAC structure
+ * @ie_data: IE buffer
+ * @ie_len: length of the @ie_data
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS lim_add_qcn_ie(tpAniSirGlobal mac_ctx, uint8_t *ie_data,
+							uint16_t *ie_len)
+{
+	tDot11fIEQCN_IE qcn_ie;
+	uint8_t qcn_ie_hdr[QCN_IE_HDR_LEN]
+		= {IE_EID_VENDOR, DOT11F_IE_QCN_IE_MAX_LEN,
+			0x8C, 0xFD, 0xF0, 0x1};
+
+	if (((*ie_len) + DOT11F_IE_QCN_IE_MAX_LEN) > MAX_DEFAULT_SCAN_IE_LEN) {
+		lim_log(mac_ctx, LOGE, FL("IE buffer not enough for QCN IE"));
+		return QDF_STATUS_E_FAILURE;
+	}
+
+	/* Add QCN IE header */
+	qdf_mem_copy(ie_data + (*ie_len), qcn_ie_hdr, QCN_IE_HDR_LEN);
+	(*ie_len) += QCN_IE_HDR_LEN;
+
+	/* Retrieve Version sub-attribute data */
+	populate_dot11f_qcn_ie(&qcn_ie);
+
+	/* Add QCN IE data[version sub attribute] */
+	qdf_mem_copy(ie_data + (*ie_len), qcn_ie.version,
+			(QCN_IE_VERSION_SUBATTR_LEN));
+	(*ie_len) += (QCN_IE_VERSION_SUBATTR_LEN);
+	return QDF_STATUS_SUCCESS;
+}
diff --git a/core/mac/src/pe/lim/lim_process_message_queue.c b/core/mac/src/pe/lim/lim_process_message_queue.c
index aa9bc9a5fc03..3526e8d431fa 100644
--- a/core/mac/src/pe/lim/lim_process_message_queue.c
+++ b/core/mac/src/pe/lim/lim_process_message_queue.c
@@ -261,6 +261,7 @@ static void lim_process_set_default_scan_ie_request(tpAniSirGlobal mac_ctx,
 	uint16_t local_ie_len;
 	struct scheduler_msg msg_q;
 	tSirRetStatus ret_code;
+	QDF_STATUS qdf_status;
 
 	if (!msg_buf) {
 		pe_err("msg_buf is NULL");
@@ -283,6 +284,13 @@ static void lim_process_set_default_scan_ie_request(tpAniSirGlobal mac_ctx,
 		goto scan_ie_send_fail;
 	}
 
+	if (mac_ctx->roam.configParam.qcn_ie_support) {
+		qdf_status = lim_add_qcn_ie(mac_ctx, local_ie_buf,
+							&local_ie_len);
+		if (QDF_IS_STATUS_ERROR(qdf_status))
+			goto scan_ie_send_fail;
+	}
+
 	wma_ie_params = qdf_mem_malloc(sizeof(*wma_ie_params) + local_ie_len);
 	if (!wma_ie_params) {
 		pe_err("fail to alloc wma_ie_params");
diff --git a/core/mac/src/sys/legacy/src/utils/src/parser_api.c b/core/mac/src/sys/legacy/src/utils/src/parser_api.c
index 51efe85ca3b6..4e5ffad0e380 100644
--- a/core/mac/src/sys/legacy/src/utils/src/parser_api.c
+++ b/core/mac/src/sys/legacy/src/utils/src/parser_api.c
@@ -1247,7 +1247,7 @@ void populate_dot11f_qcn_ie(tDot11fIEQCN_IE *pDot11f)
 {
 	pDot11f->present = 1;
 	pDot11f->version[0] = QCN_IE_VERSION_SUBATTR_ID;
-	pDot11f->version[1] = QCN_IE_VERSION_SUBATTR_LEN;
+	pDot11f->version[1] = QCN_IE_VERSION_SUBATTR_DATA_LEN;
 	pDot11f->version[2] = QCN_IE_VERSION_SUPPORTED;
 	pDot11f->version[3] = QCN_IE_SUBVERSION_SUPPORTED;
 }
diff --git a/core/sme/src/csr/csr_api_roam.c b/core/sme/src/csr/csr_api_roam.c
index b5d71b183ac8..eabd0b2f56c0 100644
--- a/core/sme/src/csr/csr_api_roam.c
+++ b/core/sme/src/csr/csr_api_roam.c
@@ -17763,6 +17763,11 @@ static void csr_update_driver_assoc_ies(tpAniSirGlobal mac_ctx,
 	uint8_t ese_ie[DOT11F_IE_ESEVERSION_MAX_LEN]
 			= { 0x0, 0x40, 0x96, 0x3, ESE_VERSION_SUPPORTED};
 #endif
+	uint8_t qcn_ie[DOT11F_IE_QCN_IE_MAX_LEN]
+			= {0x8C, 0xFD, 0xF0, 0x1, QCN_IE_VERSION_SUBATTR_ID,
+				QCN_IE_VERSION_SUBATTR_DATA_LEN,
+				QCN_IE_VERSION_SUPPORTED,
+				QCN_IE_SUBVERSION_SUPPORTED};
 
 	if (session->pConnectBssDesc)
 		max_tx_pwr_cap = csr_get_cfg_max_tx_power(mac_ctx,
@@ -17810,6 +17815,11 @@ static void csr_update_driver_assoc_ies(tpAniSirGlobal mac_ctx,
 	}
 	ese_populate_addtional_ies(mac_ctx, session, req_buf);
 
+	/* Append QCN IE if g_support_qcn_ie INI is enabled */
+	if (mac_ctx->roam.configParam.qcn_ie_support)
+		csr_append_assoc_ies(mac_ctx, req_buf, IEEE80211_ELEMID_VENDOR,
+					DOT11F_IE_QCN_IE_MAX_LEN,
+					qcn_ie);
 }
 
 /**