Communication design support apparatus, communication design support method and program

1 . A communication design support apparatus comprising:

a memory; and

a processor coupled to the memory and configured to:

store a propagation model in the memory;

acquire point cloud data of a structure by using a LiDAR sensor or an imaging device and measurement data of radio wave intensities in a plurality of different frequency bands;

update a parameter of the propagation model based on the acquired data; and

estimate propagation loss based on the propagation model,

wherein the processor is further configured to

output data in which structure data is associated with data indicating the propagation loss based on the point cloud data and the measurement data, and

update the parameter of the propagation model based on the output data so as to correct frequency characteristics of the propagation model, and

calculate the parameter for minimizing an optimization function based on the data indicating the propagation loss of the plurality of different frequency bands and estimated propagation loss data.

2 . The communication design support apparatus according to claim 1 , wherein

the processor is configured to calculate electric field intensities in the plurality of frequency bands by applying the propagation model and update the parameter to a parameter that minimizes the propagation loss in the plurality of frequency bands based on the calculated electric field intensities.

3 . The communication design support apparatus according to claim 2 , wherein

the propagation model is a ray tracing model, and

the processor is configured to calculate the electric field intensities for each set of relative coordinates by ray tracing.

4 . The communication design support apparatus according to claim 2 , wherein

the propagation model is a statistical model, and

the processor is configured to calculate the electric field intensities for each set of relative coordinates according to a transmission-reception distance.

5 . A communication design support method performed by a computer storing a propagation model, the method comprising:

acquiring point cloud data of a structure by using a LiDAR sensor or an imaging device and measurement data of radio wave intensities in a plurality of different frequency bands;

updating a parameter of the propagation model based on the acquired data; and

estimating propagation loss based on the propagation model,

wherein the method further comprises:

outputting data in which structure data is associated with data indicating the propagation loss based on the point cloud data and the measurement data,

updating the parameter of the propagation model based on the output data so as to correct frequency characteristics of the propagation model, and

calculating the parameter for minimizing an optimization function based on the data indicating the propagation loss of the plurality of different frequency bands and estimated propagation loss data.

6 . A non-transitory computer readable medium having a program embodied therein for causing a computer to perform the communication design support method of claim 5 .

7 . The communication design support apparatus according to claim 1 , wherein the processor is further configured to:

calculate a reflection coefficient or attenuation coefficient of the structure for each of the different frequency bands based on the measurement data, and

update the parameter of the propagation model based on the calculated coefficient.

8 . The communication design support apparatus according to claim 3 , wherein the processor is further configured to: convert data indicating a width, height, shape, and position of each surface of the structure into two-dimensional mesh data having a format of image data, and calculate the electric field intensities by processing the two-dimensional mesh data using a graphics processing unit (GPU).