Abstract: To shorten the time required for reading the environment data to be used in a radio wave propagation simulation, an information processing system includes a division unit configured to divide a target area into a plurality of meshes of a predetermined size; an extraction unit configured to extract height information about the respective meshes of the plurality of meshes, using one or more sets of three-dimensional data indicating the position and the shape of an object present in the target area; and a creation unit configured to create mesh data including the height information about the respective meshes of the plurality of meshes.

Abstract: A communication design support apparatus includes: an acquisition unit that acquires point cloud data of a structure and measurement data of a radio field intensity; a structure data generation unit that generates structure data indicating a shape and material of the structure based on a result of object recognition of the point cloud data; a propagation loss calculation unit that calculates propagation loss based on the measurement data of the radio field intensity in an environment including the structure; and an output unit that outputs data in which the structure

Abstract: A communication design support apparatus includes: a propagation model storage unit that stores a propagation model; an acquisition unit that acquires data in which structure data containing coordinate data is associated with data indicating propagation loss; and a selection unit that selects data indicating classification of a characteristic of a communication environment in a structure indicated by the structure data based on the acquired data.

Abstract: An information processing system includes: a first ray tracing unit configured to determine a two-dimensional ray trace from a transmission point at which a radio wave is transmitted, to a reception point at which the radio wave is received; a second ray tracing unit configured to determine a three-dimensional ray trace corresponding to the two-dimensional ray trace, using height information about the transmission point and the reception point; and a radio field intensity calculation unit that calculates the intensity of the radio wave at the reception point, using one or more three-dimensional ray traces determined by the second ray tracing unit.

Abstract: A communication design support apparatus includes: a propagation model storage unit that stores a propagation model; an acquisition unit that acquires data in which structure data containing coordinate data is associated with data indicating propagation loss; and a parameter update unit that updates a parameter of the propagation model based on the acquired data.

Abstract: A communication design support apparatus includes: a propagation model storage unit configured to store a propagation model; a site survey unit configured to collect data obtained by measuring a structure; a data processing unit configured to update a parameter of the propagation model; and a radio field intensity estimation unit configured to estimate a radio field intensity in the structure by applying the propagation model having the parameter having been updated.

Abstract: An information processing system includes: an acquisition unit configured to divide a target area into a plurality of meshes of a predetermined size, and acquire mesh data indicating the environment of the target area with height information about the plurality of meshes on a per-mesh basis; a first ray tracing unit configured to determine a two-dimensional ray trace from a transmission point to a reception point on the basis of the mesh data, a radio wave being transmitted at the transmission point, the radio wave being received at the reception point; a second ray tracing unit configured to determine a three-dimensional ray trace corresponding to the two-dimensional ray trace, on the basis of the mesh data, and height information about the transmission point and the reception point; and a radio field intensity calculation unit configured to calculate an intensity of the radio wave at the reception point, using one or more three-dimensional ray traces determined by the second ray tracing unit.

Abstract: A communication design support apparatus includes: a propagation model storage unit that stores a propagation model; an acquisition unit that acquires point cloud data of a structure and measurement data of radio wave intensities in a plurality of frequency bands; a parameter update unit that updates a parameter of the propagation model based on the acquired data; and an estimation unit that estimates propagation loss based on the propagation model.

Abstract: A connection destination switching control method executed by a communication apparatus, the connection destination switching control method comprising: a data acquisition step of acquiring observed values of received power of signals transmitted from a base station; a prediction processing step of predicting future received power by using the observed values acquired in the data acquisition step as input data into a prediction model; and a connection destination switching processing step of executing control for handover based on the future received power predicted in the prediction processing step.

Abstract: An information processing apparatus includes: a decoder to decode video data to a video signal; a graphic processing module to perform a video quality adjustment on the video signal decoded by the decoder; a display device to display video generated from the video signal; a connector for outputting the video signal to an external device; a display driver module to set an output target, to which the video signal is to be outputted; a determining module to determine to subject the video signal to the video quality adjustment performed by the graphic processing module, in accordance with the output target set by the display module.

Abstract: According to one embodiment, an information processing apparatus, executing a process including a plurality of threads for reproduction of moving image data, includes a storage unit which stores priority information indicating a priority of a process of each of threads upon executing the process of the plurality of threads, and a processing unit which reads the priority information from the storage unit, reads the read priority information as a definition file, and executes the process of each of the threads in accordance with the priority information of the definition file.

Abstract: According to one embodiment, an information processing apparatus for decoding and reproducing compressed encoded audio data and video data includes an information adding device adding time stamp information to a frame of decoded video data, the time stamp information indicating a time when the frame is to be reproduced, and a level control device monitoring a delay time of the time when the frame is to be reproduced from a time when audio data corresponding to the frame is reproduced, and lowering a decode processing level during decoding of frames of the compressed encoded video data when the delay time becomes equal to or longer than a predetermined threshold value.