diff --git a/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/NrQos.aidl b/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/NrQos.aidl
index a0792c3..be859b7 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/NrQos.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/NrQos.aidl
@@ -37,12 +37,13 @@
   int fiveQi;
   android.hardware.radio.data.QosBandwidth downlink;
   android.hardware.radio.data.QosBandwidth uplink;
-  /**
-   * @deprecated use qosFlowIdentifier.
-   */
   byte qfi;
+  /**
+   * @deprecated use averagingWindowMillis;
+   */
   char averagingWindowMs;
-  int qosFlowIdentifier;
+  int averagingWindowMillis = AVERAGING_WINDOW_UNKNOWN;
   const byte FLOW_ID_RANGE_MIN = 1;
   const byte FLOW_ID_RANGE_MAX = 63;
+  const int AVERAGING_WINDOW_UNKNOWN = (-1);
 }
diff --git a/radio/aidl/android/hardware/radio/data/NrQos.aidl b/radio/aidl/android/hardware/radio/data/NrQos.aidl
index 28b4a7f..4078fdc 100644
--- a/radio/aidl/android/hardware/radio/data/NrQos.aidl
+++ b/radio/aidl/android/hardware/radio/data/NrQos.aidl
@@ -27,6 +27,8 @@
     const byte FLOW_ID_RANGE_MIN = 1;
     const byte FLOW_ID_RANGE_MAX = 63;
 
+    const int AVERAGING_WINDOW_UNKNOWN = -1;
+
     /**
      * 5G QOS Identifier (5QI), see 3GPP TS 24.501 and 23.501. The allowed values are standard
      * values (1-9, 65-68, 69-70, 75, 79-80, 82-85) defined in the spec and operator specific values
@@ -36,13 +38,16 @@
     QosBandwidth downlink;
     QosBandwidth uplink;
     /**
-     * @deprecated use qosFlowIdentifier.
-     */
-    byte qfi;
-    char averagingWindowMs;
-    /**
      * QOS flow identifier of the QOS flow description in the range
      * (FLOW_ID_RANGE_MIN, FLOW_ID_RANGE_MAX).
-     **/
-    int qosFlowIdentifier;
+     */
+    byte qfi;
+    /**
+     * @deprecated use averagingWindowMillis;
+     */
+    char averagingWindowMs;
+    /**
+     * The duration over which flow rates are calculated.
+     */
+    int averagingWindowMillis = AVERAGING_WINDOW_UNKNOWN;
 }
diff --git a/radio/aidl/compat/libradiocompat/data/structs.cpp b/radio/aidl/compat/libradiocompat/data/structs.cpp
index 22cde6b..47f1f86 100644
--- a/radio/aidl/compat/libradiocompat/data/structs.cpp
+++ b/radio/aidl/compat/libradiocompat/data/structs.cpp
@@ -136,8 +136,8 @@
             .fiveQi = qos.fiveQi,
             .downlink = toAidl(qos.downlink),
             .uplink = toAidl(qos.uplink),
-            .qosFlowIdentifier = static_cast<int8_t>(qos.qfi),
-            .averagingWindowMs = qos.averagingWindowMs,
+            .qfi = static_cast<int8_t>(qos.qfi),
+            .averagingWindowMillis = qos.averagingWindowMs,
     };
 }