COMMUNICATION MANAGEMENT DEVICE AND COMMUNICATION MANAGEMENT METHOD

摘要

Provided is a management device maintaining communication qualities while accommodating a changeable communication environment. Based on correspondence between each geographical position of plural managed devices and available frequencies thereat, pair available frequencies available in common by arbitrary two managed devices are specified for each pair, and notified to the arbitrary two devices. From managed devices, acquiring pair communication qualities obtained when the pair available frequencies is used, defined is a best pair available frequency capable of obtaining a best pair communication quality. Specifying all of candidate paths connecting the each pair, relaying other managed devices, calculated are, based on the best pair communication quality, path communication qualities in the candidate paths connecting the each pair using the best pair available frequency. Selecting for the each pair a use path having a best quality in the path communication qualities, communication between the each pair is performed by using the use path.

主权项

1. A communication management device comprising:
a storing unit configured to store and retain a corresponding list, the list making each geographical position of a plurality of managed devices to be managed correspond to available frequencies indicating frequencies available at the each geographical position; a first specifying unit configured to specify, for each combination pair being arbitrary two managed devices out of the plurality of managed devices, frequencies available in common by the arbitrary two managed devices as pair available frequencies based on the corresponding list; a notifying unit configured to notify the pair available frequencies to each of the arbitrary two managed devices related to the pair available frequencies; an acquiring unit configured to acquire each of pair communication qualities being a quality of communication in the each combination pair obtained when each of the pair available frequencies specified for the each combination pair is used from each of the plurality of managed devices; a defining unit configured to define, for the each combination pair, a best pair available frequency out of the pair available frequencies, being capable of obtaining a best of the pair communication qualities and to define a best pair communication quality out of the pair communication qualities, corresponding to the best pair available frequency; a second specifying unit configured to specify, for the each combination pair, all of paths connecting one and another of the each combination pair, each of the paths being capable of relaying other managed devices out of the plurality of managed devices as candidate paths of the each combination pair; a calculating unit configured to calculate, for the each combination pair, based on information of the best pair communication quality, each of path communication qualities being a quality of communication in each of the candidate paths connecting one or more communications in the each combination pair using the best pair available frequency; a selecting unit configured to select, for the each combination pair, a path out of the candidate paths, the path having a best quality in the path communication qualities as a use path for the each combination pair; and a directing unit configured to direct each of the plurality of managed devices to perform communication between one and another of the each combination pair by using the use path connecting one or more communications in the each combination pair using the best pair available frequency.