Asynchronous request always has the status queued

[pavan.t2]

I am trying a asynchronous request to execute a report, but i am always getting the status as queued. It is a sample report. I expected the status to be execution. However when i try async as false as i am able to the get the status as ready. I am not sure why it always sends the status as queued. 

<reportExecution>

<exports>

<export>

<id>43e50856-1067-4ac0-a52d-d81673835282</id>

<status>queued</status>

 </export>

</exports>

<reportURI>/Infinity_Reports/Default_Templetes/General_Template</reportURI>

<requestId>9dd2aab2-4bce-4dfc-9cb4-96491b766657</requestId>

<status>queued</status>

 </reportExecution>