Delay control system for improved network coding of bidirectional traffic

A delay control system for improving network coding of bidirectional traffic, the delay control system comprising:

• an intermediate node request collector configured to receive a route request (RREQ) packet transmitted from a source node;
• an intermediate node calculator configured to calculate an expected delay time according to bidirectional link state data between n types of source nodes and a destination node included in the RREQ packet and to determine a deadline of an optimal value within the expected delay time by applying a flooding-based network coding-aware delayed store and forward (NC-DSF) scheme;
• and
• an intermediate node request transmitter configured to transmit the RREQ packet through an optimal path between the source node and the destination node based on the deadline,
• wherein the NC-DSF scheme determines the deadline of the optimal value based on a number of bidirectional data flows (B) using a link and a total number of user nodes (|U|) in the delay control system to create network coding opportunities.