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//AndroidManifest.xml

uses-permission android:name="android.permission.WAKE_LOCK" 

import android.os.PowerManager;


//init
PowerManager pm = (PowerManager)getSystemService(Context.POWER_SERVICE);
mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "Tag name");


//acquire
mWakeLock.acquire();

//release
if( mWakeLock.isHeld() ){
    Log.d(TAG, "wake lock release");
    mWakeLock.release();
}

wake lock 주체를 아래서 확인 가능

$cat /sys/power/wake_lock

출처 : http://androidxref.com/9.0.0_r3/