Management apparatus, communication system, and method therefor

A communication system configured to form redundant paths including an active path and a backup path while including a P2P (Point to Point) radio communication apparatus in the redundant paths, the communication system comprising:

• a network node;
• and
• a management apparatus, wherein
• the network node comprises:
• a communication unit configured to transmit/receive a packet to/from another network node;
• a measurement unit configured to measure a first transmission delay time of the active path and a plurality of second transmission delay times of a plurality of backup path candidates by transmitting/receiving the packet;
• and
• a monitoring control unit configured to transmit the first transmission delay time and the plurality of second transmission delay times to the management apparatus, and
• the management apparatus comprises:
• a communication unit configured to receive the first transmission delay time and the plurality of second transmission delay times;
• and
• a setting unit configured to select a backup path candidate from the plurality of backup path candidates based on differences between the plurality of second transmission delay times and the first transmission delay time, and set the selected backup path candidate as the backup path.

A method performed in a management apparatus for a communication system configured to form redundant paths including an active path and a backup path while including a P2P (Point to Point) radio communication apparatus in the redundant paths, the method comprising:

• receiving a first transmission delay time of the active path and a plurality of second transmission delay times of a plurality of backup path candidates;
• selecting a backup path candidate from the plurality of backup path candidates based on differences between the plurality of second transmission delay times and the first transmission delay time;
• and
• setting the selected backup path candidate as the backup path.