Information processing system, propagation environment data processing method, and program
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.
1 . An information processing system comprising a processor configured to:
divide a target area in a building into a plurality of meshes of a predetermined size;
extract height information about respective meshes of the plurality of meshes, using environment data indicating a position and a shape of an object present in the target area and an inside of the building;
create first mesh data indicating the height information about the respective meshes of the plurality of meshes, and second mesh data indicating ceiling heights of the respective meshes, the first and second mesh data having the same data format; and
perform a radio wave propagation simulation inside the building using the first and second mesh data.
2 . The information processing system according to claim 1 , wherein the first mesh data and the second mesh data are in a GPU-readable data format.
3 . The information processing system according to claim 1 , wherein the processor is configured to divide the target area into a plurality of region meshes that are based on latitude and longitude.
4 . The information processing system according to claim 1 , wherein the processor is configured to divide the target area into a plurality of meshes of the predetermined size, on a basis of relative coordinates with respect to three-dimensional data included in the environment data.
5 . The information processing system according to claim 1 , wherein the environment data includes three-dimensional CAD data indicating a position and a shape of a structural object present in the target area.
6 . The information processing system according to claim 1 , wherein the environment data includes three-dimensional point cloud information indicating a position and a shape of a structural object present in the target area.
7 . The information processing system according to claim 1 , wherein the environment data includes a building database indicating a position and a shape of an outer side or an inner side with respect to a building present in the target area.
8 . The information processing system according to claim 2 , wherein the processor is configured to cause a GPU to read the first mesh data and the second mesh data, and perform a radio wave propagation simulation.
9 . A propagation environment data processing method comprising:
dividing a target area in a building into a plurality of meshes of a predetermined size;
extracting height information about the respective meshes of the plurality of meshes, using environment data indicating a position and a shape of an object present in the target area and an inside of the building;
creating first mesh data indicating the height information about the respective meshes of the plurality of meshes, and second mesh data indicating ceiling heights of the respective meshes, the first and second mesh data having the same data format; and
perform a radio wave propagation simulation inside the building using the first and second mesh data,
wherein the dividing, the extracting, and the creating are implemented by an information processing system.
10 . A computer-readable non-transitory recording medium storing a program for causing an information processing system to:
divide a target area in a building into a plurality of meshes of a predetermined size;
extract height information about the respective meshes of the plurality of meshes, using environment data indicating a position and a shape of an object present in the target area and an inside of the building;
create first mesh data indicating the height information about the respective meshes of the plurality of meshes, and second mesh data indicating ceiling heights of the respective meshes, the first and second mesh data having the same data format; and
perform a radio wave propagation simulation inside the building using the first and second mesh data.