diff --git a/datalink814_ge/src/linklayer/net_scan.c b/datalink814_ge/src/linklayer/net_scan.c
index 1848346..b87f501 100644
--- a/datalink814_ge/src/linklayer/net_scan.c
+++ b/datalink814_ge/src/linklayer/net_scan.c
@@ -73,8 +73,9 @@ static int32_t Scan_2WAcqHandler(L2_INST* instPtr);
 static int32_t ScanMsg_Packing(L2_INST* instPtr, BIT_ARRAY* bitarr, L2_MSG_TYPE msgType);
 static int32_t ScanPkt_Packing(L2_INST* instPtr, SCANPKT_TYPE pktType);
 
-
-
+/**
+ * @brief   Update Init-Scan lock state.
+ */
 static inline void LockStateUpdate(L2_SCAN_FSM* scanFsmPtr, bool state){
 	ASSERT(scanFsmPtr != NULL);
 	DBG_INFO("Update BeamLockState from [%d] to [%d].\n",
@@ -82,6 +83,10 @@ static inline void LockStateUpdate(L2_SCAN_FSM* scanFsmPtr, bool state){
 	scanFsmPtr->isLocked = state;
 	return;
 }
+
+/**
+ * @brief   Update Base-info Advertisement state.
+ */
 static void BmrecvStateUpdate(L2_SCAN_FSM* scanFsmPtr, bool state){
 	ASSERT(scanFsmPtr != NULL);
 	DBG_INFO("Update BmRecvState from [%d] to [%d].\n",
@@ -89,6 +94,10 @@ static void BmrecvStateUpdate(L2_SCAN_FSM* scanFsmPtr, bool state){
 	scanFsmPtr->isBmRcved = state;
 	return;
 }
+
+/**
+ * @brief   Update 2-Way Acquisition ack state.
+ */
 static void W2ackStateUpdate(L2_SCAN_FSM* scanFsmPtr, bool state){
 	ASSERT(scanFsmPtr != NULL);
 	DBG_INFO("Update W2acqAckState from [%d] to [%d].\n",