Abstract: A communication apparatus (100 and 100A to 100C) includes a first communication unit (110), a second communication unit (110), and a control unit (140 and 140A to 140C). The first communication unit (110) performs wireless communication via an upper communication path. The second communication unit (110) communicates with a terminal apparatus (200 and 200B) via a selected communication path that is one of a plurality of lower communication paths including a wireless communication path and a wired communication path. The control unit (140 and 140A to 140C) detects whether or not communication using the selected communication path has an effect on the upper communication path, and, when the effect is detected, estimates, for each combination of the plurality of lower communication paths and the upper communication path, a communication state of the upper communication path and the lower communication path included in the combination.

Abstract: [Object] To enhance a shared model in a case of predicting a wireless environment by machine learning securely and efficiently in terms of personal information protection. [Solving Means] This information processing system includes: one or more information processing apparatuses including a first arithmetic processing unit that learns a model for predicting a wireless environment, uploads a result of the learning to a server, and predicts a wireless environment by using a shared model obtained by integrating one or more learning results in the server; and a server including a second arithmetic processing unit that integrates one or more learning results in the one or more information processing apparatuses and generates a shared model, and distributes the shared model to the one or more information processing apparatuses.

Abstract: A determination device (100) according to the present application includes a communication unit (110), an acquisition unit (131), and a determination unit (134). The communication unit (110) selectively connects to and communicates with a plurality of communication networks. The acquisition unit (131) acquires sensor information detected by a mobile communication device used by a user and communication information indicating a state of communication quality to each communication network. The determination unit (134) determines whether to switch to another communication network among the plurality of communication networks, on the basis of the sensor information and the communication information acquired by the acquisition unit (131).

Abstract: The communication apparatus includes a wireless communication unit and a determination unit. The wireless communication unit selectively connects to and communicates with a plurality of wireless communication networks in which at least one of a frequency band and a wireless communication method is different from each other. The determination unit determines whether to switch to another wireless communication network among the plurality of wireless communication networks on the basis of a communication status of at least any one of communication of layer 2, layer 3, layer 4, and layer 7 performed via any one of the plurality of wireless communication networks.