Propagation channel simulation method and apparatus
Exemplary embodiments provide a method of correcting a result of a ray tracing-based propagation channel simulation. The method of correcting propagation channel simulation data, includes: determining an intensity error value of a propagation channel simulation model for a propagation path associated with each object in a space for which a three-dimensional (3D) environment map is given and storing the intensity error value in a storage device; performing a propagation channel simulation for an arbitrary pair of a transmitter position and a receiver position in the space to obtain multipath components; determining an object having influenced propagations of the multipath components in the space; and correcting an intensity of at least one of the multipath components by applying the intensity error value associated with a determined object stored in the storage device.
1. A method of correcting propagation channel simulation data, comprising:
determining an intensity error value of a propagation channel simulation model for a propagation path associated with each object in a space for which a three-dimensional (3D) environment map is given and storing the intensity error value in a storage device;
performing a propagation channel simulation for an arbitrary pair of a transmitter position and a receiver position in the space to obtain multipath components;
determining an object having influenced propagations of the multipath components in the space; and
correcting an intensity of at least one of the multipath components by applying the intensity error value associated with a determined object stored in the storage device.
2. The method of claim 1 , wherein determining the intensity error value of the propagation channel simulation model for the propagation path associated with each object comprises:
performing actual measurements of propagation channels for a plurality of pairs of a transmitter position and a receiver position, performing provisional propagation channel simulations for the plurality of pairs of the transmitter position and the receiver position, and matching a first cluster of multipath components obtained through the actual measurements with a second cluster of multipath components obtained through the provisional propagation channel simulations;
mapping the first or the second cluster to an object in the space; and
calculating a difference between the first cluster of multipath components and the second cluster of multipath components with respect to a mapped object to store the difference as the intensity error value for the propagation path associated with the mapped object.
3. The method of claim 2 , wherein performing the actual measurements of the propagation channels, performing the provisional propagation channel simulations, and matching the first cluster of multipath components with the second cluster of multipath components comprises:
performing the actual measurements of the propagation channels for the plurality of pairs of the transmitter position and the receiver position in the space to obtain the first cluster of multipath components;
performing the provisional propagation channel simulations for the plurality of pairs of the transmitter position and the receiver position associated with the actual measurements to obtain the second cluster of multipath components; and
matching the first cluster of multipath components with the second cluster of multipath components.
4. The method of claim 2 , wherein each of actual measurement data and each of provisional simulation data comprises a delay, an angle of departure, an angle of arrival, and a signal intensity,
wherein the intensity error value is determined as a function of the delay, the angle of departure, and the angle of arrival for each object in the space and stored in the storage device.
5. The method of claim 2 , further comprising:
interpolating calculated intensity error values to supplement the intensity error values for the delay, the angle of departure, and the angle of arrival for which the intensity error values are not calculated from the first cluster of multipath components and the second cluster of multipath components.
6. The method of claim 1 , wherein correcting the intensity of at least one of the multipath components by applying the intensity error value associated with the determined object comprises:
adding the intensity error value associated with the determined object to the intensity of the at least one of the multipath components.
7. A propagation channel simulation method, comprising:
performing a propagation channel simulation for a pair of a transmitter position and a receiver object in a space for which a three-dimensional (3D) environment map is given to obtain multipath components;
determining an object having influenced propagations of the multipath components in the space; and
correcting an intensity of at least one of the multipath components by applying a predetermined intensity error value for the object.
8. The propagation channel simulation method of claim 7 , further comprising:
determining the predetermined intensity error value of a propagation channel simulation model for a propagation path associated with each object in the space and storing the predetermined intensity error value in a storage device before performing the propagation channel simulation.
9. The propagation channel simulation method of claim 8 , wherein determining the predetermined intensity error value of the propagation channel simulation model for the propagation path associated with each object comprises:
performing actual measurements of propagation channels for a plurality of pairs of a transmitter position and a receiver position, performing provisional propagation channel simulations for the plurality of pairs of the transmitter position and the receiver position, and matching a first cluster of multipath components obtained through the actual measurements with a second cluster of multipath components obtained through the provisional propagation channel simulations;
mapping the first or the second cluster to an object in the space; and
calculating a difference between the first cluster of multipath components and the second cluster of multipath components with respect to a mapped object to store the difference as the intensity error value for the propagation path associated with the mapped object.
10. The propagation channel simulation method of claim 9 , wherein performing the actual measurements of the propagation channels, performing the provisional propagation channel simulations, and matching the first cluster of multipath components with the second cluster of multipath components comprises:
performing the actual measurements of the propagation channels for the plurality of pairs of the transmitter position and the receiver position in the space to obtain the first cluster of multipath components;
performing the provisional propagation channel simulations for the plurality of pairs of the transmitter position and the receiver position associated with the actual measurements to obtain the second cluster of multipath components; and
matching the first cluster of multipath components with the second cluster of multipath components.
11. The propagation channel simulation method of claim 9 , wherein each of actual measurement data and each of provisional simulation data comprises a delay, an angle of departure, an angle of arrival, and a signal intensity,
wherein the intensity error value is determined as a function of the delay, the angle of departure, and the angle of arrival for each object in the space and stored in the storage device.
12. The propagation channel simulation method of claim 9 , further comprising:
interpolating calculated intensity error values to supplement the intensity error values for the delay, the angle of departure, and the angle of arrival for which the intensity error values are not calculated from the first cluster of multipath components and the second cluster of multipath components.
13. A propagation channel simulation apparatus, comprising:
a memory storing program instructions; and
a processor coupled to the memory and executing the program instructions stored in the memory,
wherein the program instructions, when executed by the processor, causes the processor to:
perform a propagation channel simulation for a pair of a transmitter position and a receiver object in a space for which a three-dimensional (3D) environment map is given to obtain multipath components;
determine an object having influenced propagations of the multipath components in the space; and
correct an intensity of at least one of the multipath components by applying a predetermined intensity error value for the object.
14. The propagation channel simulation apparatus of claim 13 , wherein the program instructions, when executed by the processor, causes the processor to:
determine the predetermined intensity error value of a propagation channel simulation model for a propagation path associated with each object in the space and storing the predetermined intensity error value in a storage device before performing the propagation channel simulation.
15. The propagation channel simulation apparatus of claim 14 , wherein the program instructions causing the processor to determine the predetermined intensity error value of the propagation channel simulation model for the propagation path associated with each object causes the processor to:
perform actual measurements of propagation channels for a plurality of pairs of a transmitter position and a receiver position, perform provisional propagation channel simulations for the plurality of pairs of the transmitter position and the receiver position, and match a first cluster of multipath components obtained through the actual measurements with a second cluster of multipath components obtained through the provisional propagation channel simulations;
map the first or the second cluster to an object in the space; and
calculate a difference between the first cluster of multipath components and the second cluster of multipath components with respect to a mapped object to store the difference as the intensity error value for the propagation path associated with the mapped object.
16. The propagation channel simulation method of claim 15 , wherein the program instructions causing the processor to perform the actual measurements of the propagation channels, perform the provisional propagation channel simulations, and match the first cluster of multipath components with the second cluster of multipath components causes the processor to:
perform the actual measurements of the propagation channels for the plurality of pairs of the transmitter position and the receiver position in the space to obtain the first cluster of multipath components;
perform the provisional propagation channel simulations for the plurality of pairs of the transmitter position and the receiver position associated with the actual measurements to obtain the second cluster of multipath components; and
match the first cluster of multipath components with the second cluster of multipath components.
17. The propagation channel simulation apparatus of claim 15 , wherein each of actual measurement data and each of provisional simulation data comprises a delay, an angle of departure, an angle of arrival, and a signal intensity,
wherein the intensity error value is determined as a function of the delay, the angle of departure, and the angle of arrival for each object in the space and stored in the storage device.
18. The propagation channel simulation apparatus of claim 15 , wherein the program instructions, when executed by the processor, further causes the processor to:
interpolate calculated intensity error values to supplement the intensity error values for the delay, the angle of departure, and the angle of arrival for which the intensity error values are not calculated from the first cluster of multipath components and the second cluster of multipath components.