Communication device and method

A first communication device in a network including a plurality of communication devices, the first communication device comprising:

• a receiver configured to receive from each of one or more second communication devices adjacent to the first communication device a notification of a first transmission data volume being a volume of data that is addressed to a third communication device and is transmitted by each second communication device in a certain period;
• a processor configured to judge whether a second transmission data volume obtained by aggregating the first transmission data volume notified by each of the one or more second communication devices exceeds a certain criterion;
• and
• a transmitter configured to notify a fourth communication device that the first communication device is a bottleneck in the network, when the processor judges that the second transmission data volume exceeds the certain criterion.

A method executed by a first communication device in a network including a plurality of communication devices, the method comprising:

• recognizing a third communication device which is adjacent to the first communication device, and selectable when data is transmitted toward a second communication device, with reference to a memory which memorizes the third communication device;
• receiving from a fourth communication device adjacent to the first communication device a notification of a first transmission data volume being a volume of data that is addressed to the second communication device and is transmitted by the fourth communication device through the first communication device in a certain period;
• notifying the third communication device of a second transmission data volume including the first transmission data volume and being a volume of data that is addressed to the second communication device and is transmitted by the first communication device in the certain period;
• judging whether the second transmission data volume exceeds a certain criterion;
• and
• notifying a fifth communication device that the first communication device is a bottleneck in the network, when the judging judges that the second transmission data volume exceeds the certain criterion.

A method executed by a first communication device in a network including a plurality of communication devices, the method comprising:

• receiving from each of one or more second communication devices adjacent to the first communication device a notification of a first transmission data volume being a volume of data that is addressed to a third communication device and is transmitted by each second communication device in a certain period;
• judging whether a second transmission data volume obtained by aggregating the first transmission data volume notified from each of the one or more second communication devices exceeds a certain criterion;
• and
• notifying a fourth communication device that the first communication device is a bottleneck in the network, when the judging judges that the second transmission data volume exceeds the certain criterion.