JP6475967B2 - Antenna wiring determination apparatus, antenna wiring determination method, and radio base station system - Google Patents

Description

  The present invention relates to a configuration of a radio base station system such as a mobile phone, an antenna wiring determination apparatus, and an antenna wiring determination method.

  In recent years, due to a rapid increase in the number of smartphones and the like, traffic in a cellular phone network has increased, and there is an urgent need to expand data communication capacity in the network. Installation of outdoor base stations is almost completed, but indoors need to improve the radio wave propagation environment.

  As a background art of this technical field, there is Patent Document 1. In Patent Document 1, in a network component such as a base station, an antenna, a coaxial cable, and a distributor, device settings such as transmission power, input / output gain setting, and component position are adjusted, and signal strength, transmitter position , A system for obtaining an optimal configuration of a network based on a plurality of parameters such as an antenna gain and a propagation loss model is disclosed.

Special table 2007-525040 gazette

  Patent Document 1 discloses means for estimating communication performance of a wireless network for all combinations using possible setting items other than the device type, setting, and position of network components as search parameters and presenting optimum parameters. doing.

  However, there are an enormous number of combinations of search parameters, and it is not practical to try all of them. In practice, it is necessary to reduce the possible values of parameters to be searched in advance. The most important thing in designing a wireless network is to ensure that the desired communication performance is met. For this purpose, the arrangement of the antenna of the radio base station and the power supply are important. However, there is no description on the problem of whether the total power supply can be suppressed while satisfying this condition.

  The problem to be solved in the present invention is that, when the arrangement of one or more antennas of a radio base station satisfying desired communication performance and the power supply power are determined, the power required for power supply to each antenna is satisfied, and each antenna is It is an object of the present invention to provide an arrangement of a radio base station and a distributor that suppresses the total power supply at the radio base station when connecting between the radio base station and the radio base station using a coaxial cable and a distributor.

  In order to solve the above problems, the present invention employs, for example, the configurations described in the claims.

  The present invention includes a plurality of means for solving the above-described problems. For example, the present invention accepts the installation positions of a plurality of antennas and the input of the feeding power necessary for each antenna, and each of the plurality of antennas. Wiring from the installation position of the antenna to the distributor is obtained using the installation position of the wireless transmission / reception device that satisfies the supply power that needs to be supplied and that the total value of the supply power to the plurality of antennas is substantially minimum The distribution position of the distributor is obtained such that the total value of the wiring loss due to the above and the distribution loss due to the distributor are substantially equal to the total value of the other antennas connected to the same distributor.

According to the present invention, when the arrangement and power supply power of one or more antennas of a radio base station satisfying desired communication performance are determined, the total power supply power in the radio base station is satisfied while satisfying the power required for power supply to each antenna. It is possible to provide an arrangement of radio base stations and distributors that suppress

1 is a diagram illustrating a configuration of a radio base station antenna according to a first embodiment. The figure which shows the example of the three-dimensional structure of the building which is going to arrange | position a wireless base station. The figure which shows the example of the table holding distributor information. The top view which shows the arrangement | positioning possible range and the arrangement impossible range. The figure which shows the example of a cable table. The figure which shows the example of an antenna table. The figure which shows the example of a connection display of each apparatus. The figure which shows the example of an apparatus table. The figure which shows the example of an apparatus connection table. The figure which shows the example of an apparatus connection path | route table. The figure which shows the structural example of an antenna wiring determination apparatus. The figure which shows the example of the data table of a structure. The figure which shows the example of an arrangement | positioning range table. The figure which shows the process flowchart of an antenna wiring determination apparatus. The figure which shows the process flowchart of an antenna wiring determination apparatus.

  Hereinafter, embodiments will be described with reference to the drawings.

  In this embodiment, an example of the radio base station antenna 10 will be described. FIG. 1 is an example of a configuration diagram of a radio base station antenna 10 of the present embodiment.

  101 is a wireless transceiver, 102, 103, and 104 are distributors. The distributor 102 has three branches, and the distributors 103 and 104 have two branches. Reference numerals 105 to 109 denote antennas. Reference numerals 110 to 117 denote cables. The configuration of this embodiment is merely an example, and the number of components and connection topology are not limited to this. Each distributor and cable corresponds to a radio frequency band used in a wireless network. The wireless transceiver 101 is a wireless device that transmits and receives a signal in a wireless frequency band of a wireless network to and from a wireless terminal device (not shown) via the antenna by supplying power to the antenna. It operates with an external power supply. Connect to a higher-level network device or the like (not shown), and provide a network connection to the wireless terminal device. The connection with the host device may be a connection in a radio frequency band, or may be converted into a connection by long-distance transmission such as an optical cable or Ethernet (registered trademark). In addition, the wireless transceiver 101 may form an independent network that is not connected to a host device. The cable 110 connects the wireless transceiver 101 and the distributor 102 and receives power supplied from a wireless frequency band signal from the wireless transceiver 101. Here, the feed power is a signal from the wireless transceiver side to the wireless terminal side, and bidirectional communication from the wireless terminal side to the wireless transceiver side is possible. Further, it may be configured using a cable, a distributor and an antenna, or may be configured to transmit and receive in the same system using a separation and mixing circuit such as a circulator. Here, a description will be given in the direction from the wireless transceiver side to the wireless terminal side. Cables 111 and 112 connect distributor 102 to distributor 103 and distributor 104, respectively. The cable 113 connects the distributor 102 and the antenna 107. The distributor 102 receives the power supplied from the wireless transceiver 101 via the cable 110, and distributes the power supplied to the cable 111, the cable 112, and the cable 113 in three branches. The distribution ratio may be equal distribution or unequal distribution. Similarly, distributor 103 receives the feed power distributed by distributor 102 via cable 111 and distributes the feed power to antennas 105 and 106 via cables 114 and 115, respectively. The same applies to the distributor 104, the cables 115 and 117, and the antennas 108 and 109.

  As described above, the feed power output from the wireless transceiver 101 is sent to each antenna via each cable and distributor.

  The number of each component in the present embodiment includes at least two antennas, one or more distributors, and one or more radio transceivers. However, when two or more radio transceivers are included, an antenna connected to one radio transceiver via a distributor and a cable is not connected to another radio transceiver. Moreover, the connection which becomes a loop in the connection of a divider | distributor, a cable, and a radio | wireless transmitter / receiver is not included.

  FIG. 2 is a diagram illustrating an example of a structure of a building that is a target of an area where a wireless network is constructed in the present invention. In FIG. 2, x, y, and z represent coordinate axes of a three-dimensional orthogonal coordinate system. Here, the origin and the axial direction are appropriately set according to the shape of the structure. Although the structural example 201 shows one floor of a general building, the applicable range of the present invention is not limited to one floor. F is a floor, such as reinforced concrete or metal. P represents a column and is reinforced concrete. Similarly, P2 is a pillar. M is a cabinet, made of metal. W1 and W2 represent concrete walls.

  4 is a plan view 40 corresponding to the floor structure example 20 in FIG. The non-placeable range 401 to 408 indicated by the dotted line indicates the range in which the antenna, cable, distributor, and wireless transmission / reception device in the present invention cannot be placed due to the structure of the building or the convenience of power supply. Yes. For example, the non-wiring ranges 401 to 404 and 408 are fireproof fire walls, 405 and 407 are staircase halls, and 406 is an elevator hall. Each component cannot be arranged in this range. For example, if there is a non-wiring range between the antenna and the distributor connected by the cable, the cable must be routed around this range. A portion excluding the non-placeable range from the entire range to be placed on the floor is defined as a wireable range.

  In each cable, the feed power attenuates in proportion to the length of the cable. The amount of attenuation generally varies depending on the radio frequency used, the thickness and material of the cable, and the price varies depending on the amount of attenuation, ease of handling, durability, and the like.

  FIG. 5 is an example of the cable table 50. Reference numeral 501 represents a cable type number. 502 represents the cable loss per meter. Reference numeral 503 denotes a cost per meter. The cost may be the purchase unit price itself, or a relative cost considering the ease of wiring and the like can be used. The cable of the cable type number 1 has a smaller cable loss than the cable of the cable type number 3, but indicates that the cost is tripled.

In each of the i-th cables 110 to 117, assuming that the cable loss per meter at the radio frequency used is L (i) [dB / m] and the cable length Le (i), the transmission loss by each cable is
Lc (i) = L (i) × Le (i) [dB] ... [Equation 1]
It is.

  FIG. 3 shows an example of the distributor table 30 in the present invention. The distributor table 30 is a table showing distribution losses of usable distributors. The distributor table 30 includes at least a distributor type number, a distribution number, and a distribution loss for each distribution terminal to identify the distributor. A row 301 indicates a distributor type number i. A row 302 represents the distribution number of each distributor, and a row 303 indicates a distribution loss Ld (i, k) at the terminal number k corresponding to the distribution number. A row 304 represents the cost of each distributor. For example, the distributor of distributor type number 1 is 2 distributions, and has terminal 1 and terminal 2, and the distribution loss of each terminal is Ld (1,1) = 3.0 dB, Ld (1,2) = 3.2 dB. Similarly, the distributor type numbers 2, 3, and 4 are two-branch distributors, the distributor type numbers 5 and 6 represent three branches, and the distributor type number 7 represents a four-branch distributor, respectively.

In the present embodiment, the antennas 105 to 109 are determined in terms of the feed power and the position in the floor in order to satisfy the desired wireless communication quality on the floor. FIG. 6 shows an antenna table 60 indicating the position of each antenna and the feed power. Reference numeral 601 denotes an antenna number, which corresponds to the antennas 105 to 109 of this embodiment. Reference numeral 602 represents each antenna coordinate value and corresponds to the coordinate system of FIG. Reference numeral 603 represents power supplied to each antenna. For example, the antenna number 1 corresponds to the antenna 105, and indicates that the feeding power is 0 dBm at coordinates (20, 10, 2.8). If the feeding power at antenna number m is P (m) and the total feeding power at wireless transceiver 101 is Pall, Pall is antenna number 1, cable number 5, distributor number 3, terminal 1, cable number 2. Since power is supplied through terminal 1 of distributor number 1, cable number 1,
Pall = P (1) + Lc (5) + Ld (3,1) + Lc (2) + Ld (1,1) + Lc (1) [Equation 2]
It becomes. As well
Pall = P (2) + Lc (6) + Ld (3,2) + Lc (2) + Ld (1,1) + Lc (1) ... [Equation 3]
Pall = P (3) + Lc (4) + Ld (1,2) + Lc (1) ... [Equation 4]
Pall = P (4) + Lc (7) + Ld (4,1) + Lc (3) + Ld (1,3) + Lc (1) ... [Equation 5]
Pall = P (5) + Lc (8) + Ld (4,2) + Lc (3) + Ld (1,3) + Lc (1) ... [Equation 6]
It is.

On the other hand, the total power supply Pall is the power supplied by the wireless transceiver 101, and the right sides of [Equation 2] to [Equation 6] are all equal.
Further, in [Equation 2] and [Equation 3], the power supplied to distributor number 3 in cable number 2 needs to be the same.
P (1) + Lc (5) + Ld (3,1) = P (2) + Lc (6) + Ld (3,2) ... [Equation 7]
And for [Equation 5] and [Equation 6]
P (4) + Lc (7) + Ld (4,1) = P (5) + Lc (8) + Ld (4,2) ... [Equation 8]
It becomes.

On the other hand, in order to feed the antenna placed at a given location Xa1 with a minimum feeding power from a certain point X (x, y, z), the wiring cable length is within the routable range A. This is the shortest distance Dmin (Xa1, X) between the two points X1a to X. In addition, when the power is supplied from the same point X to another antenna arranged at another location Xa2 with the minimum feeding power, the cable length is the Xa2 between the two points drawn within the wiring range A. The shortest distance Dmin (Xa2, X) of ~ X. For this reason, in order to feed power to the two antennas Xa1 and Xa2 from the same point X at the same time, connect the cables with the shortest distances to the two antennas, and the feed power required at the feed point position X is , The power supply power P (Xa1) and P (Xa2) of each antenna plus the cable loss L * Dmin (Xa1, X) and L * Dmin (Xa2, X). The power Pall (X) is the sum.
Pall (X) = 10 * log10 (10 ^ (P (Xa1) + L * Dmin (Xa1, X)) + 10 ^ (P (Xa2) + L * Dmin (Xa2, X)))) [Equation 9]

Similarly, the total feed power Pall (X) for all antennas at a point X is
Pall (X) = 10 * log10 (Σ10 ^ (P (Xak) + L * Dmin (Xak, X))) ... [Equation 10]
As obtained.

  Therefore, by feeding each antenna from the point Xmin (xmin, ymin, zmin) that minimizes Pall (X) among the points X = (x, y, z) ∈ A included in the possible arrangement range A Thus, it is possible to supply power with the minimum total supply power Pall (Xmin).

  Such a position is taken as the minimum total feeding point.

  The minimum total feed point is, for example, a numerical solution that minimizes Pall (X) shown in [Equation 10] while calculating the derivative of the shortest distance to each antenna by using Newton-Raphson method or the like, with X as a variable parameter. It can be obtained by using.

  Alternatively, it is also possible to obtain the minimum value by performing [Equation 10] for each mesh division point by performing spatial mesh division on the arrangementable range A. In addition, the method for obtaining the shortest path between two points is to generate a graph by setting the edge between the mesh point and the node corresponding to the unplaceable range, and the Dijkstra method, Warshall-Floyd method, etc. Is applicable.

  On the other hand, at the point X within the possible arrangement range, the sum of the shortest distance length to the antenna arranged at the given location Xa1 and the shortest distance from the minimum total feeding point Xmin is Dp (Xa1 X) = Dmin (Xa1, X) + Dmin (X, Xmin). Further, when the shortest distance from the point Xa1 to Xmin is D (Xa1, Xmin), D (Xa1, Xmin) ≦ Dp (Xa1, X), but the point within the predetermined margin ε is Xa1 It is assumed that the distributor arrangement range π (Xa1) = {X∈A | D (Xa1, Xmin) ≦ Dp (Xa1, X) ≦ D (Xa1, Xmin) + ε} of the antenna arranged in FIG.

When there are n (<m) antennas to be distributed at point X of the total distributor installation range that is the union of the distributor arrangement range π (Xa1) to π (Xam) of each antenna, The power supplied to the two Xa1 and Xa2 is
P (Xa1, X) = P (Xa1) + L * Dmin (Xa1, X)
P (Xa2, X) = P (Xa2) + L * Dmin (Xa2, X)
Is required.
When these are distributed by the two-branch distributor 1 in the distributor table, when the difference in the feed power is equal to the distribution loss difference of the distributor, that is,
dP (Xa1, Xa2, X) = | P (Xa1, X) -P (Xa2, X) | = | Ld (1,1) -Ld (1,2) |
In this case, by connecting the higher power supply power to a terminal having a smaller distribution loss, it is possible to supply power to Xa1 and Xa2 with only the insertion loss of the distributor. In other words, when power is supplied to the Xa1 and Xa2 by the distributor 1 at the point X, if P (Xa1, X) <P (Xa2, X),
P (Xa1, X) + Ld (1,2) = P (Xa2, X) + Ld (1,1) ... [Equation 12]
The power supplied to the distributor 1 at the point X is
P (Xc1, X) = P (Xa1, X) + Lins (1) ... [Equation 13]
It becomes. Lins (1) is an insertion loss due to the distributor 1.

  Then, instead of supplying power to Xa1 and Xa2, this is equivalent to providing a power supply path with the distributor 1 at the point X as a new point Xc1.

  Such a position is called a loss equilibrium position.

  The radio base station antenna 10 according to the present invention is characterized in that the radio transmission / reception apparatus and the distributor are arranged at a point satisfying such a condition. That is, the wireless transmission / reception apparatus is disposed at the minimum total feeding position, the distributor is disposed at the loss balance position of the antenna and the cable to be connected, and each cable to be connected passes through the shortest distance within a predetermined margin ε.

  With the above configuration, it is possible to supply power to all the required antennas with the minimum necessary power supply including margin and distributor insertion loss.

  Next, an antenna wiring determination apparatus capable of determining antenna wiring as shown in FIG. 1 will be described. The hardware configuration of the antenna wiring determination device 11 includes a CPU, a memory, a nonvolatile storage medium, and a bus that connects these, not shown. The CPU transfers the program from the non-volatile storage medium to the memory and executes the program. Examples of the program to be executed include an operating system (OS) and an application program that runs on the OS. The memory is a temporary storage area for the CPU to operate, and stores, for example, an OS and application programs transferred from a nonvolatile storage medium. The non-volatile storage medium is an information storage medium, and stores an OS, an application program, a device driver, and a program for operating the CPU, and also stores the execution result of the program. Examples of the nonvolatile storage medium include a hard disk drive (HDD), a solid state drive (SSD), and a flash memory. Further, an easily removable external storage medium may be used as the nonvolatile storage medium. As such an external storage medium, for example, a flexible disk (FD), an optical disk such as a CD or a DVD, a flash memory such as a USB memory or a compact flash (registered trademark) can be used.

  FIG. 11 is a diagram showing a functional configuration of the antenna wiring determination apparatus 11 according to the present invention. In this figure, the programs executed by the CPU are as wiring range input means 1101, distributor / cable information input means 1102, antenna position / feeding power input means 1104, wireless transceiver position / distributor position / cable wiring determination means 1105, and so on. A memory or a nonvolatile storage medium is represented as a data holding unit 1103, and a display screen is represented as an antenna arrangement / wiring display unit 1106.

  Reference numeral 1101 denotes an arrangement range input unit which inputs an arrangement range table 13 as shown in FIG. 13 and stores it in the data holding unit 1103. A distributor / cable information input unit 1102 inputs the distributor table 30 and the cable table 50 shown in FIGS. 3 and 5 and stores them in the data holding unit 1103.

  Reference numeral 1104 denotes antenna position / feeding power input means, which inputs the antenna table 60 shown in FIG. 6 and stores it in the data holding unit 1103.

  FIG. 12 is a diagram illustrating an example of the structure data table 12 held in the data holding unit 1103. The structure data table 12 includes a structure type 1201, a name 1202, coordinates 1203 from the start point to the end point on the x, y, and z coordinates of the structure, a shape type 1204, and material properties 1205. Examples of the type 1201 include a wall, a pillar, and a device, and examples of the shape type 1204 include a rectangular parallelepiped. Examples of the material property 1205 include a relative dielectric constant, a specific transmittance, and a conductivity.

  FIG. 13 is a diagram illustrating an example of the arrangement range information table 13. The arrangement range information table 13 includes a wiring range type 1301, a range coordinate 1302, and a shape type 1303.

  Each range is information representing a range in a three-dimensional space or a two-dimensional space indicated by coordinates 1302 and shape type 1303. In the drawing, an example of a rectangular parallelepiped shape represented by two points of a start point coordinate and an end point coordinate and a shape type “cuboid” is shown. Actually, not only a rectangular parallelepiped, but also a basic shape other than a rectangular parallelepiped such as a cylinder or a triangular prism, or an arbitrary figure represented by connection information between arbitrary point sequences and points can be used.

  In addition, the wiring range type 1301 is information indicating whether or not any or all of the cable wiring, the distributor, and the wireless transmission / reception device can be arranged in each range. In the case where both overlapping and disabling of the overlapping range are designated, priority is given to either by the priority order designation information or the order of appearance in the table. This arrangement range information table is created based on the structure data table 12 described above.

The antenna position / feed power input means 1104 in FIG. 11 inputs information of the antenna table 60 as shown in FIG. 6 and stores it in the data holding unit 1103.
The wireless transmitter / receiver position / distributor position / cable wiring deciding means uses the antenna shown in the antenna table based on the arrangement range table, distributor table, cable table, and antenna table information stored in the data holding unit 1103. Calculate the minimum total feed position that satisfies the position and supply power and one or more loss balance positions necessary for distribution, and place information on the wireless transceiver position at the minimum total feed position and a distributor for each loss balance position Information and the wiring information of the cables connecting the respective antennas, distributors, and wireless transceivers are generated and stored in the data holding unit as device wiring information data.
The antenna arrangement / wiring display means 1106 reads various data stored in the data holding unit, and displays the wireless transceiver position, distributor position, and cable wiring according to the equipment wiring information data.

  FIG. 7 is a diagram showing an example in which device wiring information is displayed with respect to the example of the antenna table shown in FIG.

  The device wiring information display screen 70 is an example represented by a two-dimensional plan view. For the arrangeable range 71, 401 to 408 represent non-placeable ranges.

  Reference numerals 701 to 705 denote antenna positions for the antenna numbers 1 to 5 in the antenna table. Further, in the vicinity of the antenna position, the antenna number and the corresponding feed power are shown with “:” in between. Reference numerals 706 to 708 denote 2 distributors and 3 distributors, and device numbers 6, 7, and 8 are assigned thereto. In addition, a wireless transmitter / receiver position is assigned to the position 708, and a device number 9 is assigned.

  FIG. 8 shows an example of a device table 80 representing device information for these antennas, distributors, and wireless transceivers. The device number 801 indicates an ID unique to each device constituting the wireless transmission / reception antenna of the present invention. A position coordinate 802 represents a coordinate value of each device. The type 804 is information indicating the type of device, which is whether each device is an antenna, a distributor, or wireless transmission / reception. The type number indicates unique ID information in the type table of each device, that is, an antenna table in the case of an antenna, a distributor table in the case of a distributor, and a wireless transceiver table in the case of a wireless transceiver.

  In the example of the table in FIG. 8, the device IDs 1 to 5 have the same values as the input antenna table 60. The same applies to the type number. The device IDs 6 to 8 are distributors, and by the type number, the device IDs 6 and 7 are distributors of two branches of the distributor ID1, and the device ID 8 is a distributor of three branches of the distributor ID5. ing. The device ID 9 is a wireless transceiver.

  FIG. 9 shows an example of a device connection table 90 representing how each device is connected. A connection number 901 represents a connection ID. In the present embodiment, the devices having the device IDs 1 to 9 are connected by 8 connections. Device number 1 (902) and device number 2 (903) indicate device IDs connected to both ends of the connection. Terminal number 1 (904) and terminal number 2 (905) indicate terminal numbers connected to the devices indicated by device number 1 and device number 2, respectively. A cable number 906 indicates a cable ID used for each connection.

  For example, the connection number 1 indicates that one is connected to the device ID 9, that is, the terminal ID 1 of the wireless transceiver using the cable ID 1, and the other is connected to the terminal ID 0 of the three-branch distributor of the device ID 8. Further, for example, the connection number 4 indicates that the cable ID1 is used to connect the terminal ID3 of the distributor having the device ID8 and the terminal ID0 of the antenna having the device ID4.

  FIG. 10 shows an example of the connection path table 100 indicating the cable wiring positions. A connection number 1001 indicates a connection ID in the device connection table 90. That is, for each connection ID, it represents coordinate value information that is routed in order to wire between the coordinates for the device IDs at both ends of the cable within the possible arrangement range. The route order 1002 indicates the order of connecting the coordinate values of via points to the same connection number. A coordinate 1003 is a coordinate value of the via point. In this embodiment, an example having one or more pieces of table information for each connection number is shown. However, when devices are connected by a straight line, there is no need for information in this table.

  The antenna arrangement / wiring display means 1106 outputs the above information and displays it by the antenna arrangement / wiring display means 1106.

  As described above, when the antenna arrangement and the power supply power are determined, the arrangement of the radio base station and distributor is provided so that the total power supply in the radio base station is suppressed while satisfying the power required for power supply to each antenna. can do.

  Further, by using the distributor table 30 and the cable table 5, it is possible to adjust the arrangement of the low-cost coaxial cable and distributor as long as the same communication performance can be satisfied. Specifically, for example, the total cost of the coaxial cable to be used, the total cost of the distributor, and the total feeding power when they are used are multiplied by a coefficient and totaled. By selecting a device, it is possible to provide an optimal arrangement of radio base stations and distributors.

  Next, a processing flow in the wireless transceiver position / distributor position / cable wiring determination means will be described. The processing for determining the position of the wireless transmitter / receiver, the position of the distributor, and the cable wiring can be realized by the flowcharts as shown in FIGS.

  FIG. 15 shows the initialization process.

  Step 1501 represents the start of processing.

  Step 1502 shows a process of generating mesh points X by dividing the entire range in the arrangement range table into a specified mesh size.

  Step 1503 classifies whether each point X is a placeable point or a non-placeable point according to the information of the placement range table, sets the placeable mesh point as a node, and sets the adjacent placeable mesh point. Generates a dispositionable graph composed of edges connecting.

  Step 1504 represents a process for obtaining the shortest distance table including the shortest distance and the shortest path for all combinations of points classified in the possible arrangement range.

  Step 1505 registers each piece of antenna information held in the antenna table as an initial state in the target device list holding the power supply target.

  Step 1506 indicates the end of the process.

  FIG. 14 is a process for determining the distributor and transmitter / receiver positions.

  Step 1401 represents the start of processing.

  In step 1402, the required power P (Xak, required for power supply considering the cable loss when the point X is set as the power supply point based on the power supply of the target device list and the position of the device and the shortest distance to each point X. This is a process for obtaining X).

  Step 1403 is a process of obtaining the total power supplied by summing up the required power at each point X and obtaining the smallest point Xmin.

  Step 1404 is a process for obtaining the required power P0 = P (Xak, Xmin) between each device k and Xmin.

  Step 1405 is a process for obtaining the required power P (Xak, X, Xmin) for Xmin according to the distance via each point X from each device k.

  Step 1406 indicates a process for obtaining XP (k, X) = P (Xak, X, Xmin) −P0 at each point X.

  Step 1407 indicates a process of selecting the distribution number of each distributor j in order of increasing XP (k, X) at each point X.

Step 1408 indicates a process for obtaining Pc (j, X) obtained by summing up the required power by the device selected at each point X.
Step 1409 shows processing for obtaining the total required power Pa ′ (X) at Xmin when the required power by the device selected at each point X is replaced with Pc (j, X).

  Step 1410 is a process for obtaining X′min that minimizes Pa ′ (X).

  Step 1411 shows a process in which the distributor j is arranged in X′min, the selected device is deleted, and the power supplied to the distributor j is set.

  Step 1412 shows a process in which a wireless transceiver is arranged and connected when the number of target devices becomes one, and the process proceeds to Step 1413; otherwise, the process returns to Step 1404.

  Step 1413 indicates the end of the process.

With the configuration as described above, it is possible to automatically calculate, output, and display the wiring information of the wireless transmission / reception antenna having the configuration shown in the first embodiment of the present invention.

In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. Each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files for realizing each function can be stored in a recording device such as a memory, a hard disk, or an SSD (Solid State Drive), or a recording medium such as an IC card, an SD card, or a DVD.

2: Structure 10: Radio base station antenna 101: Radio transceivers 102-104: Dividers 105-109: Antennas 110-117: Cable 201: Building structure example 30: Divider table 40: Arrangeable range and arrangement Impossible range 50: Cable table 60: Antenna table 70: Device wiring display example 80: Device table 90: Device connection table 100: Device connection path table 11: Antenna wiring determination device 1101: Wiring range input means 1102: Distributor / cable information Input means
1103: Data holding unit 1104: Antenna position / feeding power input means 1106: Radio transceiver position distributor position cable wiring determination means
1107: Antenna arrangement / wiring display means 13: Arrangement range table 15: Data holding unit

Claims (6)

Input means for receiving the input positions of the plurality of antennas, and the feed power necessary for each antenna;
Meet feeding required power supply to each of the plurality of antennas, and the installation position of the wireless transceiver sum of power supplied to the plurality of antennas becomes minimum, per unit length of the distribution cable power Radio transceiver position determination means to be determined using the amount of loss;
Distributor position determining means for obtaining an installation position of a distributor that distributes power supplied to the plurality of antennas from the wireless transceiver; and
The distributor position determining means uses the power loss amount per unit length of the wiring cable and the power loss amount for each terminal of the distributor, from the feeding power of the antenna, from the installation position of the antenna wiring loss due to the wiring to the distributor, and calculates the total value, the total value and the installation position etc. properly made such the distributor of another antenna connected to the same distributor of the distribution loss by the distributor antenna Wiring determination device. In claim 1,
The wireless transmitter / receiver position determining means and the distributor position determining means use the wireless transmitter / receiver, or the wireless transmitter / receiver using arrangement range information indicating a position where the distributor can be installed in a floor, Or the antenna wiring determination apparatus which calculates | requires the installation position of the said divider | distributor. In claim 2,
The wireless transceiver position determining means includes:
A feeding amount of power required to each of the plurality of antennas, the amount of power and the wireless transmission and reception such that the total value becomes the minimum of the loss by the wiring of the wiring cable from the installation candidate location of a wireless transceiver to each antenna An antenna wiring determination device that searches for an installation position of a machine from an installable position indicated in the arrangement range information. In claim 2,
The distributor position determining means includes
The amount of power supplied to the first antenna connected to the first terminal of the distributor, the amount of power lost due to the wiring of the distribution cable from the distribution candidate position of the distributor to the first antenna, A first sum that is the sum of
The amount of power supplied to the second antenna connected to the second terminal of the distributor, the amount of power lost due to the wiring of the wiring cable from the distribution candidate position of the distributor to the second antenna, A second total value that is the sum of
Difference between the second sum from the first sum value, an installation position of the first distribution loss and the second of said distributor such like made properly and the difference of the distribution loss Pin The antenna wiring determination apparatus which searches from the installable position shown in the arrangement range information. Accepts the installation position of multiple antennas and the input of the feed power required for each antenna,
Meet feeding required power supply to each of the plurality of antennas, and the installation position of the wireless transceiver sum of power supplied to the plurality of antennas becomes minimum, per unit length of the distribution cable power Calculated using loss amount,
Using the amount of power loss per unit length of the wiring cable and the amount of power loss for each terminal of the distributor that distributes the power supplied from the wireless transceiver to the plurality of antennas, the power supply power of the antenna the wiring loss due to the wiring to the distributor from the installation position of the antenna, and the total value of the distribution loss by distributor, the same distributor to another antenna of the total value and equal properly made such the connecting An antenna wiring determination method for determining the installation position of a distributor. A plurality of antennas, a wireless transceiver that feeds power to the plurality of antennas, a distributor that distributes feeding power from the wireless transceiver to the plurality of antennas, the plurality of antennas, the wireless transceiver, and In a wireless base station system comprising a wiring cable connecting between the distributors,
The distributor has the same power supply power of the antenna connected to one terminal, power loss due to the wiring from the antenna installation position to the distributor, and the total value of the distribution loss due to the distributor. installed in the sum and equal properly made such a position of the antenna connected to the other terminal connected to,
Wherein the wireless transceiver satisfies feeding necessary power supply to each of the plurality of antennas, and the total value of the power supplied to the plurality of antennas, characterized in that it is installed in a position where the minimum radio Base station system.