KR20140114672A - Calculation apparatus and method for wireless signal propagation - Google Patents

Abstract

Disclosed is an apparatus for calculating wireless signal propagation and an operation method of the same. The apparatus for calculating wireless signal propagation, for calculating propagation intensity of a wireless signal transmitted from a transmitter by using a propagation path searched based on a ray tracing method, can improve the computational efficiency by reducing time required for re-searching a propagation path by allowing recycling of the existing propagation path when changing the position of the transmitter.

Description

[0001] CALCULATION APPARATUS AND METHOD FOR WIRELESS SIGNAL PROPAGATION [0002]

The present invention relates to a radio signal propagation calculation device, and more particularly, to a radio signal propagation calculation device for calculating a propagation intensity of a radio signal transmitted from a transmitter using a propagation path based on a ray tracing method, And more particularly to a radio signal propagation calculation device and a radio signal propagation calculation device which can increase the calculation efficiency by reducing the time required for re-searching the propagation path.

A radio wave model is indispensable in designing infrastructure such as a base station for establishing a wireless communication network, and radio equipment such as a mobile terminal and a wireless LAN.

One of the most representative methods of propagation model prediction to obtain such a propagation model is to search the propagation path based on building data in a simulation environment through a computer, and to obtain a propagation model using the retrieved propagation path. At this time, the ray tracing method is generally adopted as a method of searching the propagation path based on the building data.

Hereinafter, with reference to FIG. 1, a process of searching for a propagation path in accordance with the ray tracing method in the above-described propagation model prediction method will be briefly described.

In the propagation model prediction method, a ray having a shape of a semi-infinite straight line in all directions at a specific transmission point X is generated and is reflected, transmitted, and diffracted when the object surface, that is, the plane (A, B) Let's proceed. When the light beam traveling in all directions at the transmission point X passes the desired measurement point Y, the propagation path 1 is searched by the propagation path between the transmission point X and the measurement point Y. [

Therefore, the propagation model prediction method can estimate the radio signal propagation intensity reaching the measurement point (Y) with respect to the radio signal transmitted from the transmitter (10) of the transmission point (X) using the propagation path (1) Can be calculated.

As described above, the propagation model prediction method searches all the propagation paths with all the possible measurement points based on one transmission point X as described above, and transmits the propagation paths to the transmitter 10 of the transmission point X using all the propagated paths, The radio signal propagation intensities reaching all the measurement points with respect to the radio signal transmitted from the base station are all obtained by the propagation model.

As described above, the propagation model prediction method has an advantage of obtaining a very accurate propagation model because it obtains a propagation model by searching / utilizing all possible propagation paths based on building data.

However, in the conventional propagation model predicting method as described above, when the position of the transmitter 10 to obtain the propagation model is changed (X - > X '), all the possible measurement points with respect to the transmission point X' All propagation paths must be re-searched. In this way, re-searching all the propagation paths at the time of changing the position of the transmitter 10 (X - > X ') takes into consideration that the propagation path search requires the most time in the calculation process for obtaining the propagation model, It is a very inefficient process.

Accordingly, in the present invention, in calculating the propagation intensity of a radio signal transmitted from a transmitter using a propagation path based on a ray tracing method, it is possible to reduce the time required for re- I would like to propose a way to increase it.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method and apparatus for calculating a propagation intensity of a radio signal transmitted from a transmitter using a propagation path, The present invention proposes a radio signal propagation calculation device and a radio signal propagation calculation device which can increase the calculation efficiency by reducing the time required for re-searching the propagation path by allowing the existing propagation path to be reused when changing the location.

According to a first aspect of the present invention, there is provided a radio signal propagation calculation apparatus comprising: a radio wave propagation path calculating unit for calculating a propagation path between a first point and a second point searched for a light ray reaching a second point from a first point, A propagation path storing unit for storing a path; An array transmitter generating unit that generates at least a pair of array transmitters having the same propagation path as the propagation path searched based on the third point and the first point when the position of the transmitter changes to a third point; And a radio wave intensity calculation unit for calculating a radio signal propagation intensity that reaches the second point based on the propagation path and the at least one pair of array transmitters for the radio signal transmitted from the transmitter at the third point .

Advantageously, each of the array transmitters included in the at least one pair of array transmitters comprises a first transmitter at the third point and a second transmitter at a location symmetrical to the first transmitter about the first point can do.

Preferably, the transmission intensities of the first transmitter and the second transmitter included in the respective array transmitters have a value obtained by dividing the transmit power of the transmitter by the number of the array transmitters included in the at least one pair of the array transmitters, For each pair of array transmitters, each of the second transmitters included in the pair of array transmitters may have a different sign among positive (+) or negative (-) codes.

Preferably, the radio wave intensity calculation unit calculates, for each radio signal transmitted from each transmitter included in the at least one pair of the array transmitters, the respective radio signal propagation intensities reaching the second point based on the propagation path And calculates a radio signal propagation intensity for a radio signal transmitted from the transmitter at the third point based on the radio signal propagation intensity calculated for each radio signal of each transmitter.

According to a second aspect of the present invention, there is provided an operation method of a radio signal propagation calculation apparatus, comprising: a first point detected with respect to a light ray reaching a second point from a first point where a transmitter is located; A propagation path storing step of storing a propagation path between points; An array transmitter generating step of generating at least a pair of array transmitters having the same propagation path as the propagation path searched based on the third point and the first point when the position of the transmitter is changed to the third point; And a radio wave intensity calculation step of calculating a radio signal propagation intensity that reaches the second point based on the propagation path and the at least one pair of array transmitters for the radio signal transmitted from the transmitter at the third point do.

Advantageously, each of the array transmitters included in the at least one pair of array transmitters comprises a first transmitter at the third point and a second transmitter at a location symmetrical to the first transmitter about the first point can do.

Preferably, the transmission intensities of the first transmitter and the second transmitter included in the respective array transmitters have a value obtained by dividing the transmit power of the transmitter by the number of the array transmitters included in the at least one pair of the array transmitters, For each pair of array transmitters, each of the second transmitters included in the pair of array transmitters may have a different sign among positive (+) or negative (-) codes.

Preferably, the step of calculating the propagation intensity includes calculating, for each radio signal transmitted from each transmitter included in the at least one pair of array transmitters, a radio signal propagation intensity that reaches the second point based on the propagation path And calculate a radio signal propagation intensity for a radio signal transmitted from the transmitter at the third point based on each radio signal propagation intensity calculated for each radio signal of each transmitter.

The method of operation of the radio signal propagation calculation apparatus and the radio signal propagation calculation apparatus according to the present invention calculates the propagation intensity of a radio signal transmitted from a transmitter using a propagation path based on a ray tracing method, Since the radio signal propagation coefficient for the radio signal transmitted from the transmitter at the changed position can be calculated by reusing the existing propagation path, the effect of increasing the calculation efficiency by reducing the time required for re-searching the propagation path is derived .

1 is an exemplary diagram showing an example in which a propagation path is changed according to a position change of a transmitter.
FIG. 2 is a diagram illustrating an example of a pair of array transmitters generated according to a position change of a transmitter in a radio signal propagation calculation apparatus according to a preferred embodiment of the present invention. Referring to FIG.
3 is a control block diagram illustrating a configuration of a radio signal propagation calculation device according to a preferred embodiment of the present invention.
4 is a flowchart illustrating an operation method of a radio signal propagation calculation apparatus according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

First, a radio signal propagation calculation apparatus according to a preferred embodiment of the present invention will be described with reference to FIG.

3, the radio signal propagation calculation apparatus 100 according to the present invention is characterized in that the radio signal propagation calculation apparatus 100 according to the present invention is a radio signal propagation calculation apparatus that calculates a difference between a first point searched for a light ray reaching a second point from a first point, A propagation path storing section (120) for storing a propagation path; and a transmission path storing section (120) having a propagation path identical with the propagation path searched based on the third point and the first point when the position of the transmitter is changed to a third point An array transmitter generating unit 130 for generating a pair of array transmitters based on the propagation path and the at least one pair of array transmitters for a radio signal transmitted from the transmitter at the third point, And a radio-wave intensity calculation unit 140 for calculating a radio-wave signal propagation intensity reaching the mobile station.

The propagation path storage unit 120 stores a propagation path between the first point and the second point searched for a light ray reaching a second point from a first point where the transmitter is located.

That is, the propagation path storage unit 120 stores the transmission point X from the transmission point X, i.e., the first point X to the measurement point Y, that is, the second point Y, as shown in FIG. (1) between the first point (X) and the second point (Y) retrieved with respect to the arriving light.

More specifically, the propagation path storage unit 120 may store propagation paths with all possible measurement points that are searched based on the first point X at which the transmitter 10 is located.

For example, the radio signal propagation calculation apparatus 100 according to the present invention may further include a propagation path searching unit 110 for searching for a propagation path based on a ray tracing method.

The propagation path searching unit 110 generates a ray having a shape of a half-infinite straight line in all directions at a transmission point X, that is, the first point X where the transmitter 10 is located, (A) and (B) which are made of the same material as that of the surface (B). When the light beam traveling in all directions at the first point X passes the desired measurement point Y or the second point Y, the propagation path 1 is divided into the first point X and the second point Y Y).

The propagation path searching unit 110 can search the propagation path 1 with respect to the second point Y based on the first point X at which the transmitter 10 is located, Can be searched for all possible propagation paths with all possible measurement points based on the first point (X) at which the first point (X) is located.

Accordingly, the propagation path storing unit 120 stores not only the propagation path 1 of the propagation path search result of the propagation path searching unit 110, that is, the propagation path 1 with the second point Y on the basis of the first point X, It can store propagation paths with all measurement points.

Meanwhile, the radio signal propagation calculation apparatus 100 according to the present invention may not include the propagation path search unit 110. In this case, the propagation path searching unit 110, in cooperation with a separate search device (not shown) that externally performs the function of the propagation path searching unit 110, calculates all possible measurement points based on the first point X / RTI > and / or < / RTI >

The radio wave intensity calculation unit 140 calculates the radio wave intensity of the radio signal transmitted from the transmitter 10 at the first point X using all the propagation paths stored in the propagation path storage unit 120, All of the signal propagation intensities can be calculated.

For example, if the second point (Y) is referred to among all the measurement points based on the first point (X), the radio wave intensity calculation section (140) The radio signal propagation intensity reaching the second point Y based on the propagation path 1 between the first point X and the second point Y stored in the propagation path storing section 120 It is calculated.

Therefore, in a device (not shown) that operates as a propagation model prediction method, the result of calculation as described above in the radio signal propagation calculation apparatus 100 of the present invention, that is, the radio signal transmitted from the transmitter 10 at the first point X It is possible to obtain a radio wave model based on radio signal propagation intensities reaching all measurement points with respect to the signal.

1, the position of the transmitter 10 may be changed from the transmission point X, that is, from the first point X to the third point X '.

In this case, according to the conventional technique, when the position of the transmitter 10 is changed (X - > X ', all the propagation paths with all possible measurement points based on the third point X'

However, even if the position of the transmitter 10 is changed (X - > X '), the radio signal propagation calculation apparatus 100 according to the present invention can not detect the propagation path again, 10 to calculate the radio signal propagation intensity reaching all measurement points with respect to the radio signal transmitted from the base station.

When the position of the transmitter 10 is changed to the third point X ', the array transmitter generating unit 130, which is a constitution for this, sets the third point X' and the first point X ' And generates at least a pair of array transmitters having a propagation path centered at the first point (X) and the same propagation path as the first propagated path between the first point (X) and the corresponding measurement point.

Hereinafter, for convenience of explanation, the second point (Y) among all the measurement points will be referred to.

In other words, when the position of the transmitter 10 is changed to the third point X ', the array transmitter generating unit 130 generates the third point X' and the third point X ' At least one pair of arrangements having a propagation path that is the same as the pre-retrieved propagation path (1) between the first point (X) and the second point (Y) centered on the first point (X) A transmitter, e.g., a pair of array transmitters 1, 2 as shown in FIG.

In other words, when the position of the transmitter 10 is changed from the first point X to the third point X ', at least a pair of array transmitters corresponding to the transmitter 10 of the third point X' So that the transmitter 10 of the third point X 'is equivalently converted into at least one pair of array transmitters generated as described above.

In the case of an array antenna composed of a plurality of antenna elements, it can be considered that a radio signal is transmitted at the center position of the array. Equivalently to the transmitter 10 of the three points X ' The radiation patterns of the radio signals transmitted from the at least one pair of array transmitters may be different from the radiation patterns of the radio signals transmitted by the transmitter 10 at the first location X, .

Hereinafter, for convenience of explanation, it will be described that the array transmitter generating unit 130 generates a pair of array transmitters 1 and 2. FIG.

Here, the pair of the array transmitters 1 and 2, which are generated by the array transmitter generating unit 130, will be described in more detail. The pair of the array transmitters 1 and 2 are connected to the first transmitter at the third point X ' And a second transmitter at a position X "symmetrical to the first transmitter about a point X.

2, the array transmitter 1 has a position symmetrical to the first transmitter 11 about the first transmitter 11 and the first point X at the third point X ' And the second transmitter 12 of the second transmitter X. The array transmitter 2 is connected to the first transmitter 13 and the first point X of the third point X ' And a second transmitter 14 at a position X "symmetrical with the first transmitter 13.

At this time, the transmission intensities of the first transmitter and the second transmitter included in at least one pair of the array transmitters have a value obtained by dividing the transmission intensity of the transmitter 10 by the number of array transmitters included in the at least one pair of the array transmitters .

2, the first transmitter 11 and the second transmitter 12 included in the pair of the array transmitters 1 and 2 and the second transmitters 12 and 14 included in the pair of the transmitters 1 and 2 The transmission intensity has a value obtained by dividing the transmission intensity S of the transmitter 10 by the number of array transmitters included in the pair of array transmitters 1 and 2, that is, 2.

일 것이다.The transmission strength of the first transmitter 11,13 and the second transmitter 12,14 is calculated by dividing the transmission strength S of the transmitter 10 by 2

would.

For each pair of the array transmitters, the transmission strength of the second transmitter included in the array transmitter of one of the pair of array transmitters is set to a positive (+) sign or a negative And has a sign opposite to the transmission strength.

)는, 양(+)의 부호 또는 음(-)의 부호 중 송신기(10)의 송신세기(S)와 반대되는 부호를 갖는다.That is, as shown in FIG. 2, a pair of the array transmitters 1 and 2 will be described. The transmit strength of the second transmitter 14 included in one of the array transmitters 1 and 2, (

Has a sign opposite to the transmission intensity S of the transmitter 10 among positive (+) or negative (-) codes.

일 것이고, 배열송신기2에 포함된 제2송신기(14)의 송신세기는, -

일 것이다.If the transmission intensity S of the transmitter 10 has a positive sign, the first transmitter 11 and the second transmitter 12 included in the array transmitter 1 and the second transmitter 12 included in the array transmitter 2 1 transmission intensity of the transmitter 13 is +

And the transmit strength of the second transmitter 14 included in the array transmitter 2 is -

would.

When the position of the transmitter 10 is changed from the first point X to the third point X ', the array transmitter generating unit 130 generates the first point X as shown in FIG. 2 The above-described pair of array transmitters 1 and 2 having the same propagation path as the propagation path 1 searched centrally are generated.

The radio wave intensity calculation section 140 calculates the radio wave intensity calculation section 140 based on the propagation path 1 and the pair of array transmitters 1 and 2 on the basis of the radio signal transmitted from the transmitter 10 at the third point X ' Y) of the radio signal.

More specifically, the radio wave intensity calculation section 140 calculates a radio wave intensity (hereinafter referred to as " 1 ") for each radio signal transmitted from each of the transmitters 11, 12, 13 and 14 included in the pair of the array transmitters 1 and 2 And calculates the radio signal propagation intensity reaching the second point Y based on the radio signal propagation intensity.

The process of calculating the radio signal propagation intensity at which the radio wave intensity calculation unit 140 reaches the second point Y based on the propagation path with respect to the radio signal transmitted from the transmitter may include one of various existing calculation algorithms Can be realized.

), 전파경로(1)을 통해 확인되는 제1송신기(11) 및 제2지점(Y) 간의 거리에 의한 전파 감쇄, 전파경로(1)을 통해 확인되는 무선신호의 반사 및 투과 및 회절 등에 의한 감쇄 등을 적용함으로써, 제2지점(Y)에 도달하는 무선신호 전파세기를 계산할 수 있다.For example, the radio wave intensity calculation unit 140 calculates the transmission intensity (+) of the first transmitter 11 with respect to the radio signal transmitted from the first transmitter 11 included in the array transmitter 1,

, Propagation attenuation due to the distance between the first transmitter 11 and the second point Y confirmed through the propagation path 1, reflection, transmission and diffraction of the radio signal through the propagation path 1, By applying attenuation or the like, it is possible to calculate the radio signal propagation intensity reaching the second point (Y).

As described above, the radio wave intensity calculation unit 140 calculates the radio wave propagation intensity for each radio signal transmitted from each of the transmitters 11, 12, 13, and 14 included in the pair of the array transmitters 1 and 2 have.

Based on the radio signal propagation intensity calculated for each radio signal of each of the transmitters 11, 12, 13, and 14 as described above, the radio wave intensity calculation unit 140 calculates the radio- 10 can calculate the radio signal propagation intensity with respect to the radio signal transmitted from the base station.

That is, the radio wave intensity calculation unit 140 calculates a sum of the radio signal propagation intensities calculated for each of the radio signals of the transmitters 11, 12, 13, and 14 as described above, Can be calculated as the radio signal propagation intensity for the radio signal transmitted from the transmitter 10.

Among the respective radio signal propagation intensities calculated for the respective radio signals of the transmitters 11, 12, 13 and 14, the radio waves of the first transmitter 11 included in the array transmitter 1 located at the third point X ' The signal propagation intensity (+) and the radio signal propagation intensity (+) of the first transmitter (13) included in the array transmitter 2 will be doubled because they are equal in size and have the same sign, The radio signal propagation intensity (+) of the second transmitter 12 included in the array transmitter 1 located at the symmetrical position X ", and the radio signal propagation intensity (+) of the second transmitter 14 included in the array transmitter 2, ) Will be canceled because they are the same in size but have different signs.

Therefore, the sum of the radio signal propagation intensities calculated for the respective radio signals of the transmitters 11, 12, 13, and 14 may be a sum of the first transmitter 11 or the first transmitter 11 located at the third point X ' Which is twice the radio signal propagation intensity calculated for the radio signal transmitted from the base station 13.

)는, 제3지점(X')으로 변경된 송신기(10)의 송신세기(S)의 1/2이기 때문에, 전술과 같이 3지점(X')의 송신기(10)에 대응하여 등가적으로 변환된 한 쌍의 배열송신기1,2에 포함되는 각 송신기(11,12,13,14)의 계산된 무선신호 전파세기를 모두 합한 값은, 제3지점(X')의 송신기(10)에서 송신되는 무선신호에 대한 무선신호 전파세기일 수 있다. Here, as described above, the transmission strength of the first transmitter 11 or the first transmitter 13

Is half of the transmission intensity S of the transmitter 10 that has been changed to the third point X 'so that it can be converted equivalently in correspondence with the transmitter 10 of the three points X' The sum of the calculated radio signal propagation intensities of the respective transmitters 11, 12, 13, and 14 included in the pair of the array transmitters 1 and 2 is equal to the sum of the transmitted radio signal propagation intensities of the transmitters 11, Lt; RTI ID = 0.0 > radio signal < / RTI >

Therefore, in an apparatus (not shown) operating as a propagation model prediction method, a result of calculation as described above in the radio signal propagation calculation apparatus 100 of the present invention, that is, transmitted from the transmitter 10 at the third point X ' The propagation model based on the radio signal propagation intensities reaching all the measurement points with respect to the radio signal can be obtained as quickly as the time required due to the rediscovery of the propagation path.

As described above, in the radio signal propagation calculation apparatus according to the present invention, when calculating the propagation intensity of a radio signal transmitted from a transmitter using a propagation path that is searched based on a ray tracing method, Thus, it is possible to calculate the radio signal propagation coefficient for the radio signal transmitted from the transmitter at the changed position by reusing the existing propagation path, thereby improving the calculation efficiency by reducing the time required for re-finding the propagation path .

On the other hand, in the case of the array antenna, the size of the array antenna may be regarded as a form in which the wireless signal is transmitted at the center position of the array, as long as the size of the array antenna is relatively small in comparison with the volume of the surrounding object or the empty space.

Therefore, the radio signal propagation calculation apparatus 100 according to the present invention is configured such that the change range when the position of the transmitter 10 is changed from the first point X to the third point X ' , It is preferable that the change range is applied only when the change range is within a predetermined threshold change range (a value preset to be relatively small in comparison with the volume of the surrounding object or the empty space).

In the above description, the pair of the array transmitters 1 and 2 is referred to for the sake of convenience of explanation, but this is only an embodiment. The radio signal propagation calculation apparatus 100 according to the present invention includes a pair of array transmitters 1, It is also possible to generate a pair of the array transmitters 3 and 4 and to calculate the radio signal propagation intensity for the radio signal transmitted from the transmitter 10 at the third point X '

Hereinafter, an operation method of the radio signal propagation calculation apparatus according to the preferred embodiment of the present invention will be described in detail with reference to FIG. For convenience of description, the reference numerals of FIGS. 1 to 3 will be described.

A method of operating a radio signal propagation apparatus according to the present invention is a method of generating a ray having a shape of a half-infinite straight line in all directions at a transmission point (X), that is, a first point (X) In other words, when the plane (A, B) based on the building data is encountered, it is allowed to proceed while being reflected, transmitted and diffracted and the light beam traveling in all directions at the first point (X) Y), the propagation path 1 is searched by the propagation path between the first point X and the second point Y (S100).

As described above, the operation method of the radio signal propagation calculation apparatus according to the present invention can search the propagation path 1 with the second point Y on the basis of the first point X at which the transmitter 10 is located , As well as all possible propagation paths with all possible measurement points based on the first point (X) where the transmitter (10) is located.

Accordingly, the method of operating the radio signal propagation apparatus according to the present invention is not limited to the propagation path search result of step S100, that is, the propagation path 1 with the second point (Y) based on the first point (X) The propagation paths to all measurement points can be stored (S110).

The method of operating the radio signal propagation calculation apparatus according to the present invention is characterized in that the radio signal transmitted from the transmitter 10 of the first point X by using all the propagation paths stored in step S100 All the signal propagation intensities can be calculated (S120).

For example, a description will be given of a second point (Y) among all measurement points with the first point (X) as a reference. An operation method of the radio signal propagation calculation apparatus according to the present invention is a method of operating a transmitter The radio signal propagation intensity reaching the second point Y based on the propagation path 1 between the first point X and the second point Y stored in step S110 It is calculated.

1, the position of the transmitter 10 may be changed from the transmission point X, that is, from the first point X to the third point X '.

The operation method of the radio signal propagation calculation apparatus according to the present invention is such that when the position of the transmitter 10 is changed to the third point X ', the third point X' and the first point X ' (Step S130). In step S130, at least one pair of array transmitters having the same propagation path as the first propagation path detected between the first point X and the corresponding measurement point is generated.

Hereinafter, for convenience of explanation, the second point (Y) among all the measurement points will be referred to.

The operation method of the radio signal propagation calculation apparatus according to the present invention is such that when the position of the transmitter 10 is changed to the third point X ' (1) between the first point (X) and the second point (Y) about the first point (X) based on the first point (X) At least one pair of array transmitters, for example a pair of array transmitters 1, 2 as shown in FIG.

Hereinafter, for convenience of explanation, it is assumed that a pair of array transmitters 1 and 2 are generated in step S130.

Here, the pair of the array transmitters 1 and 2 will be described in more detail. The pair of the array transmitters 1 and 2 are arranged such that the first transmitter and the first transmitter (X ') at the third point (X' Lt; RTI ID = 0.0 > (X ") < / RTI >

2, the array transmitter 1 has a position symmetrical to the first transmitter 11 about the first transmitter 11 and the first point X at the third point X ' And the second transmitter 12 of the second transmitter X. The array transmitter 2 is connected to the first transmitter 13 and the first point X of the third point X ' And a second transmitter 14 at a position X "symmetrical with the first transmitter 13.

At this time, the transmission intensities of the first transmitter and the second transmitter included in at least one pair of the array transmitters have a value obtained by dividing the transmission intensity of the transmitter 10 by the number of array transmitters included in the at least one pair of the array transmitters .

2, the first transmitter 11 and the second transmitter 12 included in the pair of the array transmitters 1 and 2 and the second transmitters 12 and 14 included in the pair of the transmitters 1 and 2 The transmission intensity has a value obtained by dividing the transmission intensity S of the transmitter 10 by the number of array transmitters included in the pair of array transmitters 1 and 2, that is, 2.

일 것이다.The transmission strength of the first transmitter 11,13 and the second transmitter 12,14 is calculated by dividing the transmission strength S of the transmitter 10 by 2

would.

For each pair of the array transmitters, the transmission strength of the second transmitter included in the array transmitter of one of the pair of array transmitters is set to a positive (+) sign or a negative And has a sign opposite to the transmission strength.

)는, 양(+)의 부호 또는 음(-)의 부호 중 송신기(10)의 송신세기(S)와 반대되는 부호를 갖는다.That is, as shown in FIG. 2, a pair of the array transmitters 1 and 2 will be described. The transmit strength of the second transmitter 14 included in one of the array transmitters 1 and 2, (

Has a sign opposite to the transmission intensity S of the transmitter 10 among positive (+) or negative (-) codes.

일 것이고, 배열송신기2에 포함된 제2송신기(14)의 송신세기는, -

일 것이다.If the transmission intensity S of the transmitter 10 has a positive sign, the first transmitter 11 and the second transmitter 12 included in the array transmitter 1 and the second transmitter 12 included in the array transmitter 2 1 transmission intensity of the transmitter 13 is +

And the transmit strength of the second transmitter 14 included in the array transmitter 2 is -

would.

A radio signal propagation apparatus according to the present invention includes a propagation path 1 and a pair of array transmitters 1 and 2 for a radio signal transmitted from a transmitter 10 at a third point X ' The radio signal propagation intensity reaching the second point Y as a basis is calculated (S140, S150).

More specifically, the method of operating the radio signal propagation calculation apparatus according to the present invention is characterized in that, for each radio signal transmitted from each of the transmitters 11, 12, 13, and 14 included in the pair of the array transmitters 1 and 2 , And the radio signal propagation intensities reaching the second point (Y) based on the propagation path (1) are calculated (S140).

The operation method of the radio signal propagation calculation apparatus according to the present invention is based on the radio signal propagation intensity calculated for each radio signal of each transmitter 11, 12, 13, 14 as described above, The radio signal propagation intensity for the radio signal transmitted from the transmitter 10 of the base station 100 can be calculated (S150).

That is, in the method of operating the radio signal propagation apparatus according to the present invention, as described above, a sum of the radio signal propagation intensities calculated for each radio signal of each of the transmitters 11, 12, 13, Is the radio signal propagation intensity for the radio signal transmitted from the transmitter 10 of the base station X '.

Among the respective radio signal propagation intensities calculated for the respective radio signals of the transmitters 11, 12, 13 and 14, the radio waves of the first transmitter 11 included in the array transmitter 1 located at the third point X ' (+) Of the first transmitter 13 included in the array transmitter 2 and the radio signal propagation intensity (+) of the first transmitter 13 included in the array transmitter 2 will be doubled in total because they are equal in size and have the same sign, The radio signal propagation intensity (+) of the second transmitter 12 included in the array transmitter 1 located at the symmetrical position X ", and the radio signal propagation intensity (+) of the second transmitter 14 included in the array transmitter 2, ) Will be canceled because they are the same in size but have different signs.

Therefore, the sum of the radio signal propagation intensities calculated for the respective radio signals of the transmitters 11, 12, 13, and 14 may be a sum of the first transmitter 11 or the first transmitter 11 located at the third point X ' Which is twice the radio signal propagation intensity calculated for the radio signal transmitted from the base station 13.

)는, 제3지점(X')으로 변경된 송신기(10)의 송신세기(S)의 1/2이기 때문에, 전술과 같이 3지점(X')의 송신기(10)에 대응하여 등가적으로 변환된 한 쌍의 배열송신기1,2에 포함되는 각 송신기(11,12,13,14)의 계산된 무선신호 전파세기를 모두 합한 값은, 제3지점(X')의 송신기(10)에서 송신되는 무선신호에 대한 무선신호 전파세기일 수 있다.Here, as described above, the transmission strength of the first transmitter 11 or the first transmitter 13

Is half of the transmission intensity S of the transmitter 10 that has been changed to the third point X 'so that it can be converted equivalently in correspondence with the transmitter 10 of the three points X' The sum of the calculated radio signal propagation intensities of the respective transmitters 11, 12, 13, and 14 included in the pair of the array transmitters 1 and 2 is equal to the sum of the transmitted radio signal propagation intensities of the transmitters 11, Lt; RTI ID = 0.0 > radio signal < / RTI >

As described above, in the method of operating the radio signal propagation calculation apparatus according to the present invention, in calculating the propagation intensity of a radio signal transmitted from a transmitter using a propagation path that is searched based on a ray tracing method, The position of the transmitter can be changed. By reusing the existing propagation path, the radio signal propagation coefficient for the radio signal transmitted from the transmitter at the changed position can be calculated. Therefore, it is possible to reduce the time required for re- The efficiency can be increased.

The method of operating the radio signal propagation device according to an embodiment of the present invention may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

According to the radio signal propagation calculation device and the operation method of the radio signal propagation calculation device according to the present invention, in calculating the propagation intensity of a radio signal transmitted from a transmitter using a propagation path that is searched based on a ray tracing method, It is possible to recycle the existing propagation path in the case of changing the location, thereby reducing the time required for re-searching the propagation path. As a result, overcoming the limitations of the existing technology, But it is an invention that is industrially applicable because it can be practically carried out clearly.

100: Radio signal propagation calculation device
110: propagation path searching unit 120: propagation path storing unit
130: Array transmitter generating unit 140: Propagation intensity calculation unit

Claims (8)

A propagation path storing section for storing a propagation path between the first point and the second point searched for a light ray reaching a second point from a first point where the transmitter is located;
An array transmitter generating unit that generates at least a pair of array transmitters having the same propagation path as the propagation path searched based on the third point and the first point when the position of the transmitter changes to a third point; And
And a radio wave intensity calculation section for calculating a radio signal propagation intensity reaching the second point based on the propagation path and the at least one pair of array transmitters with respect to the radio signal transmitted from the transmitter at the third point Characterized in that the radio signal propagation calculation device The method according to claim 1,
Each of the array transmitters included in the at least one pair of array transmitters,
A first transmitter at the third point and a second transmitter at a position symmetrical to the first transmitter about the first point. 3. The method of claim 2,
Wherein the transmission intensities of the first transmitter and the second transmitter included in each of the array transmitters have a value obtained by dividing the transmit intensity of the transmitter by the number of the array transmitters included in the at least one pair of the array transmitters,
Wherein each of the second transmitters included in a pair of the array transmitters has a different sign among positive (+) codes and negative (-) codes, for each pair of the array transmitters. 4. The method according to any one of claims 1 to 3,
The radio-
For each radio signal transmitted from each transmitter included in the at least one pair of the array transmitters, each radio signal propagation intensity reaching the second point based on the propagation path,
And calculates a radio signal propagation intensity for a radio signal transmitted from the transmitter at the third point based on each radio signal propagation intensity calculated for each radio signal of each transmitter. A propagation path storing step of storing a propagation path between the first point and the second point retrieved with respect to a light ray reaching a second point from a first point where the transmitter is located;
An array transmitter generating step of generating at least a pair of array transmitters having the same propagation path as the propagation path searched based on the third point and the first point when the position of the transmitter is changed to the third point; And
Calculating a radio signal propagation intensity that reaches the second point based on the propagation path and the at least one pair of array transmitters for the radio signal transmitted from the transmitter at the third point Wherein the radio signal propagation calculation apparatus comprises: 6. The method of claim 5,
Each of the array transmitters included in the at least one pair of array transmitters,
A first transmitter at the third point and a second transmitter at a location symmetrical to the first transmitter about the first point. The method according to claim 6,
Wherein the transmission intensities of the first transmitter and the second transmitter included in each of the array transmitters have a value obtained by dividing the transmit intensity of the transmitter by the number of the array transmitters included in the at least one pair of the array transmitters,
Characterized in that each of the second transmitters included in the pair of array transmitters has a different sign among positive (+) or negative (-) codes for each pair of array transmitters How it works. 8. The method according to any one of claims 5 to 7,
The propagation intensity calculation step may include:
For each radio signal transmitted from each transmitter included in the at least one pair of the array transmitters, each radio signal propagation intensity reaching the second point based on the propagation path,
And calculates a radio signal propagation intensity for a radio signal transmitted from the transmitter at the third point based on each radio signal propagation intensity calculated for each radio signal of each transmitter Way.

Images