
Symbols  Definition 

 The set of signs of flows in output queue 
 The mth flow in output queue, represents the number of packet belonging to , 
 The set of signs of mth flow in output queue, 
 The nth packet of mth flow 
 The length of 
 The length of maximum transmission unit 
 The set of groups of coding flows, represents corresponding number of groups 
 The set of signs of groups of coding flows, represents corresponding number of signs 
 The kth group of coding flows, represents the number of flows in , 
 The set of signs of kth group of coding flows, represents corresponding number of signs, 
 The set of signs of nonempty flows belonging to kth group of coding flows, represents corresponding number of signs, 
 The set of flows that can not be encoded, represents corresponding number of flows 
 The set of signs of flows that cannot be encoded 
 The set of signs of nonempty flows in , represents corresponding number of signs 
 Set to be 1 if network coding conditions are met and is set to be 0 otherwise 
