Openflow based distributed antenna system policy routing method

An apparatus, comprising:

• a memory;
• and
• a processor which is configured, when executing program instructions stored in the memory, to perform operations of:
• classifying, by a DAS unit, a service of traffic received through an input port of the DAS unit into a macro fronthaul service and a Smallcell or WiFi backhaul service, and performing framing according to the classified service;
• extracting, by the DAS unit, a match field from header information of a received frame;
• and
• comparing, by the DAS unit, the extracted match field with a matching rule of a forwarding table to route according to a matching traffic transmission policy and output a frame to an output port of the DAS unit,
• wherein the DAS unit includes control plane and data plane,
• wherein the control plane is configured to receive the traffic transmission policy from a DAS controller and set transmission policy of the data plane,
• wherein the data plane is configured to transmit traffic received through the input port of the DAS unit to the output port based on the received traffic transmission policy, and
• wherein the data plane of the DAS unit supports only the traffic transmission function of a vendor's own specification, and the DAS unit maps and set the OpenFlow based traffic transmission policy to the traffic transmission policy of the vendor's own specification of the DAS unit.