Communication terminal and cluster monitoring method

摘要

It is an object to provide a communication terminal capable of determining a cluster formation so as to promptly perform addition of a participant terminal, while maintaining the quality of a stream relay path. Cluster monitoring terminal (430) is an apparatus to determine a cluster formation in a network performing packet transfer according to terminal relay-type multipoint communication, and includes: a cluster quality calculation section (432) for acquiring cluster quality representing a small loss in a packet to be received, per a cluster; a cluster sustainability calculation section (433) for acquiring cluster sustainability representing ease of acceptance of a participant terminal, per a cluster; and cluster division/integration analysis section (434) for determining cluster division with respect to a cluster having low cluster quality, and determining integration with other cluster with respect to a cluster having high cluster quality and low cluster sustainability.

主权项

1. A communication terminal determining a cluster formation to construct a stream relay path on a cluster basis in a network performing packet transfer according to terminal relay-type multipoint communication, the communication terminal comprising:
a cluster quality calculator that acquires cluster quality representing a small loss in a packet to be received, per the cluster; a cluster sustainability calculator that acquires cluster sustainability representing ease of acceptance of a participant terminal, per the cluster; and a cluster division/integration analyzer that determines cluster division with respect to a cluster having low cluster quality, and determining integration with other cluster with respect to a cluster having high cluster quality and low cluster sustainability, wherein the cluster quality is higher when a ratio of the number of low loss links that are network links having a low packet loss to the number of all network links is higher, and the cluster sustainability is higher when the number of the low loss links of the cluster is larger, wherein the cluster quality calculator, the cluster sustainability calculator, and the cluster division/integration analyzer are stored in a memory which is executable by a processor.