diff --git a/scheduler/scheduler.cc b/scheduler/scheduler.cc
index 1e9aee7..209e3d1 100644
--- a/scheduler/scheduler.cc
+++ b/scheduler/scheduler.cc
@@ -175,6 +175,20 @@
     return TaskPtr ();
 }
 
+TaskPtr
+Scheduler::scheduleDelayOneTimeTask (SchedulerPtr scheduler, double delay,
+                                const Task::Callback &callback, const Task::Tag &tag)
+{
+  TaskPtr task = make_shared<OneTimeTask> (callback, tag, scheduler, delay);
+  if (scheduler->addTask (task))
+    return task;
+  else{
+    _LOG_ERROR ("reschedule task for " << tag);
+    scheduler->rescheduleTask(tag);
+    return TaskPtr ();
+  }
+}
+
 bool
 Scheduler::addTask(TaskPtr newTask, bool reset/* = true*/)
 {
diff --git a/scheduler/scheduler.h b/scheduler/scheduler.h
index 096be98..a52649a 100644
--- a/scheduler/scheduler.h
+++ b/scheduler/scheduler.h
@@ -70,6 +70,10 @@
   schedulePeriodicTask (SchedulerPtr scheduler, IntervalGeneratorPtr delayGenerator,
                         const Task::Callback &callback, const Task::Tag &tag);
 
+  // helper method to schedule/reschedule one-time task
+  static TaskPtr
+  scheduleDelayOneTimeTask (SchedulerPtr scheduler, double delay, const Task::Callback &callback, const Task::Tag &tag);
+
   // if task with the same tag exists, the task is not added and return false
   virtual bool
   addTask(TaskPtr task, bool reset = true);