Dynamic route branching system and dynamic route branching method

A dynamic route splitting unit possibly provided in a node relaying a traffic flow on a network and a reception terminal as a destination of the traffic flow, the dynamic route splitting unit comprising:

• a monitoring section configured to monitor the traffic flow having reached said node when being provided in said node in said network, and to notify a monitoring result to a control unit;
• a splitting section configured to split the traffic flow received from a node at a previous stage to said node into split traffic flows which are transmitted onto an initial route and a split route in response to an instruction from said control unit which selects at least said node, which splits traffic flows based on a reception quality of the traffic flow on the network, when the splitting section being provided in said node relaying the traffic flow in said network;
• and
• a merging section configured to merge the split traffic flows having reached through said initial route and said split route to restore the traffic flow when being provided in a node at a subsequent stage to said node,
• wherein said splitting section is arranged in a plurality of said nodes in said network, and
• wherein the monitoring section arranged in each of said splitting sections monitors the traffic flows reached to each of said nodes and notifies the monitoring result to said control unit.

A dynamic route splitting method, comprising:

• monitoring reception quality of a traffic flow on a network to carry out dynamic route setting to an optional node on said network, by a control unit;
• monitoring a traffic flow having reached a predetermined node on said network to notify a monitoring result to said control unit;
• splitting and transmitting the traffic flow received from a split node at a previous stage to a node relaying the traffic flow on said network in the relaying node onto an initial route and a split route in response to an instruction from said control unit which selects at least said node, which splits traffic flows based on a reception quality of the traffic flow on the network;
• merging the traffic flows having reached through said initial route and said split route to restore the traffic flow in a node at a subsequent stage to the split node;
• setting said initial route and said split route to a node at a previous stage to a start node of a function deterioration path by said control unit, if recognizing the function deterioration path in said initial route based on a monitoring result, when a multicast communication is carried out on said network;
• and
• splitting and transmitting the traffic flow onto said initial route and said split route in the node of the previous stage to the start node of the function deterioration path.

A non-transitory computer-readable storage medium in which a program code is stored to attain a dynamic route splitting method which comprises:

• monitoring a traffic flow having reached a predetermined node on said network to notify a monitoring result to a control unit;
• splitting and transmitting the traffic flow received from a split node at a previous stage to a node relaying the traffic flow on said network in the relaying node onto an initial route and a split route in response to an instruction from said control unit which selects at least said node, which splits traffic flows based on a reception quality of the traffic flow on the network;
• merging the traffic flows having reached through said initial route and said split route to restore the traffic flow in a node at a subsequent stage to the split node;
• setting said initial route and said split route to a node at a previous stage to a start node of a function deterioration path by said control unit, if recognizing the function deterioration path in said initial route based on a monitoring result, when a multicast communication is carried out on said network;
• and
• splitting and transmitting the traffic flow onto said initial route and said split route in the node of the previous stage to the start node of the function deterioration path.