| 摘要 |
A communication network system including: a first node apparatus; a second and third node apparatuses; and a fourth node apparatus which performs radio communication with the first node apparatus via the second node apparatus or the third node apparatus, wherein the first node apparatus includes a control unit which determines a route selection rule for a first route reaching the fourth node apparatus via the second node apparatus and a second route reaching the fourth node apparatus via the third node apparatus, based on an adaptability indicating a reference of the route selection to route selection indicators indicating a state of the first and second routes respectively, and selects the first route or the second route according to the determined route selection rule, and the first and fourth node apparatuses perform the radio communication via the second node apparatus or the third node apparatus.
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