<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<fragment
        android:id="@+id/frag_yourfragid"
        android:name="com.test.yourpackage.FragmentExtendedClass"
        android:layout_width="match_parent"
        android:layout_height="0dip"
        android:layout_weight="1" />

<com.google.ads.AdView android:id="@+id/adView"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     ads:adUnitId="a150e68b8c3cc71"
                     ads:adSize="BANNER"
                     ads:testDevices="0123456789ABCDEF"
                     ads:loadAdOnCreate="true"
                     android:layout_alignParentBottom="true" />
</RelativeLayout>