diff --git a/src/src/radio.c b/src/src/radio.c
index 02efeaf..dc2efce 100644
--- a/src/src/radio.c
+++ b/src/src/radio.c
@@ -102,9 +102,8 @@ static otRadioFrame sTransmitFrame;
 static uint8_t      sTransmitPsdu[OT_RADIO_FRAME_MAX_SIZE + 1];
 
 #if OPENTHREAD_CONFIG_MAC_HEADER_IE_SUPPORT
-static otExtAddress  sExtAddress;
-static otRadioIeInfo sTransmitIeInfo;
-static otInstance   *sInstance = NULL;
+static otExtAddress sExtAddress;
+static otInstance  *sInstance = NULL;
 #endif
 
 static otRadioFrame sAckFrame;
@@ -172,9 +171,6 @@ static void dataInit(void)
 
     sDefaultTxPower      = OT_RADIO_POWER_INVALID;
     sTransmitFrame.mPsdu = sTransmitPsdu + 1;
-#if OPENTHREAD_CONFIG_MAC_HEADER_IE_SUPPORT
-    sTransmitFrame.mInfo.mTxInfo.mIeInfo = &sTransmitIeInfo;
-#endif
 
     sReceiveError = OT_ERROR_NONE;
 
@@ -534,10 +530,11 @@ otError otPlatRadioTransmit(otInstance *aInstance, otRadioFrame *aFrame)
         otMacFrameSetFrameCounter(aFrame, sMacFrameCounter++);
     }
 
-    if (aFrame->mInfo.mTxInfo.mTxDelay != 0)
+    if (aFrame->mInfo.mTxInfo.mTimeInfo.mDelayInfo.mTxDelay != 0)
     {
-        if (!nrf_802154_transmit_raw_at(&aFrame->mPsdu[-1], true, aFrame->mInfo.mTxInfo.mTxDelayBaseTime,
-                                        aFrame->mInfo.mTxInfo.mTxDelay, aFrame->mChannel))
+        if (!nrf_802154_transmit_raw_at(&aFrame->mPsdu[-1], true,
+                                        aFrame->mInfo.mTxInfo.mTimeInfo.mDelayInfo.mTxDelayBaseTime,
+                                        aFrame->mInfo.mTxInfo.mTimeInfo.mDelayInfo.mTxDelay, aFrame->mChannel))
         {
             error = OT_ERROR_INVALID_STATE;
         }
@@ -1220,7 +1217,7 @@ int8_t otPlatRadioGetReceiveSensitivity(otInstance *aInstance)
 #if OPENTHREAD_CONFIG_MAC_HEADER_IE_SUPPORT
 void nrf_802154_tx_started(const uint8_t *aFrame)
 {
-    bool processSecurity = false;
+    uint64_t now = otPlatTimeGet();
 
     assert(aFrame == sTransmitPsdu);
     OT_UNUSED_VARIABLE(aFrame);
@@ -1234,22 +1231,7 @@ void nrf_802154_tx_started(const uint8_t *aFrame)
 
     // Update IE and secure transmit frame
 #if OPENTHREAD_CONFIG_TIME_SYNC_ENABLE
-    if (sTransmitFrame.mInfo.mTxInfo.mIeInfo->mTimeIeOffset != 0)
-    {
-        uint8_t *timeIe = sTransmitFrame.mPsdu + sTransmitFrame.mInfo.mTxInfo.mIeInfo->mTimeIeOffset;
-        uint64_t time   = otPlatTimeGet() + sTransmitFrame.mInfo.mTxInfo.mIeInfo->mNetworkTimeOffset;
-
-        *timeIe = sTransmitFrame.mInfo.mTxInfo.mIeInfo->mTimeSyncSeq;
-
-        *(++timeIe) = (uint8_t)(time & 0xff);
-        for (uint8_t i = 1; i < sizeof(uint64_t); i++)
-        {
-            time        = time >> 8;
-            *(++timeIe) = (uint8_t)(time & 0xff);
-        }
-
-        processSecurity = true;
-    }
+    otMacFrameUpdateTimeIe(&sTransmitFrame, now);
 #endif // OPENTHREAD_CONFIG_TIME_SYNC_ENABLE
 
 #if OPENTHREAD_CONFIG_THREAD_VERSION >= OT_THREAD_VERSION_1_2
@@ -1257,11 +1239,9 @@ void nrf_802154_tx_started(const uint8_t *aFrame)
              !sTransmitFrame.mInfo.mTxInfo.mIsSecurityProcessed);
 
     sTransmitFrame.mInfo.mTxInfo.mAesKey = &sCurrKey;
-
-    processSecurity = true;
 #endif // OPENTHREAD_CONFIG_THREAD_VERSION >= OT_THREAD_VERSION_1_2
 
-    otEXPECT(processSecurity);
+    otEXPECT(!sTransmitFrame.mInfo.mTxInfo.mIsSecurityProcessed);
     otMacFrameProcessTransmitAesCcm(&sTransmitFrame, &sExtAddress);
 
 exit: