iOS - Concurrency performing 5 operations uploading images to server using NSOperationQueue followed by single Task in Objective-c

I have to perform below operations using nsoperationqueue concurrently.

I need to perform multiple operations in background at a time like 5(Uploading files to Server) , i have to manage all queues depends up on follow scenorio

• 1) network is 2G only perform 1 Operation,remaining 4 operations should be stop

• 2) network is either 3G/Wifi perform all operations parallally.

How can i achieve this Using Objective-c???

Thanks in advance.