JP6615928B2 - Method and program for simulating installation location of wide area terminal - Google Patents

Description

  The present disclosure includes a multistage relay radio network configured by a multistage relay radio set installed in a measuring instrument with a communication function, and a wide area communication unit in which a wide area terminal connected to one multistage relay radio set of the multistage relay radio network is installed. The present invention relates to a simulation method for a location of a wide area terminal in a communication system and a program for causing a simulation apparatus to execute a simulation of the location of a wide area terminal.

  In the prior art, the location of a wide area terminal used for wide area communication is specified on the simulator for the purpose of constructing a system reliably and inexpensively in a network system composed of two stages of wide area communication and multistage relay radio. There are those that present network configurations and their costs. There is also a method for searching for a base station installation location where the number of hops is small.

  For example, Patent Document 1 discloses contents related to a simulator that supports network construction in a system that combines wide area communication and self-operated multi-hop radio.

Japanese Patent No. 6186141

  In a network system consisting of two stages of multi-stage relay radio by multi-stage relay radio and wide-area communication by wide-area terminals, wide-area terminals can be installed at low cost in cases where multi-stage relay radios are installed in stages. About the method which can be performed, it is not disclosed in the patent document of the prior art including the patent document 1. FIG.

  Accordingly, the present disclosure has been made to solve the above-described problems, and in a case where multistage relay radios are installed step by step, the installation location of the wide area terminal that can calculate the installation location of the wide area terminal that is low in cost. An object of the present invention is to provide a simulation method and program.

One form of the present disclosure made to solve the above problems is a multi-stage relay wireless network configured by a multi-stage relay radio installed in a measuring instrument with a communication function, and one multi-stage relay of the multi-stage relay radio network. In a simulation method of a location of a wide area terminal in a communication system having a wide area communication unit where a wide area terminal connected to a radio is installed, when the multistage relay radio is installed in stages, the multistage relay radio network Calculating the installation location of the wide area terminal in consideration of the total cost including the cost of the wide area terminal and the cost of manual meter reading by the meter reader, assuming the construction status;
It is characterized by.

  According to this aspect, when a multistage relay radio network is installed in stages, when constructing a multistage relay radio network, the total cost is taken into consideration, the number of wide area terminals is reduced, and manual meter reading is performed. By lowering the cost, it is possible to calculate the installation location of the wide area terminal that is low in cost.

  In the above aspect, the multi-stage relay radio apparatus is divided in an area network that is a range where the multi-stage relay radio apparatus is connected by a distance capable of communication in one hop within a predetermined area, and the multi-stage relay radio apparatus is stepwise in units of the area network. In the process of installing the multi-stage relay radio network, the installation location of the wide area terminal is provisionally determined for each multi-stage relay radio network, and the multi-stage relay radio network is constructed by combining a plurality of the multi-stage relay radio networks. , Tentatively determining the installation location of the wide area terminal that can minimize the total cost, and considering the technical restrictions of the multistage relay radio, the multistage relay radio is installed in stages until a predetermined year later. The installation location of the wide area terminal that has been provisionally determined when it becomes impossible to unite the plurality of multi-stage relay wireless networks. Be determined by, it is preferred.

  According to this aspect, in the process of installing multistage relay radios in stages, the total cost is minimized when a multistage relay radio network is constructed by combining a plurality of multistage relay radio networks. The installation location of the wide area terminal provisionally decided in the multistage relay wireless network is adopted. Therefore, it is possible to construct a multistage relay wireless network while searching for the installation location of a wide area terminal that is low in cost. As a result, multistage relay radios were installed step by step until a predetermined year later, and due to technical restrictions of multistage relay radios, multiple multistage relay radio networks could not be combined, and the construction of multistage relay radio networks was completed. Sometimes, it is possible to specify the installation location of a wide area terminal that is low cost. Thus, according to this aspect, in the case where multistage relay radios are installed step by step, it is possible to calculate the installation location of the wide area terminal that is low in cost.

  Further, according to the above aspect, the predetermined area is divided by the area network that is a range where the multistage relay radio apparatus can be connected by a distance that can be communicated in one hop, and the location of the wide area terminal is calculated for each area network. . As a result, the number of nodes to be calculated can be reduced, and the problem scale can be reduced to a level at which the optimization problem for the installation location of the wide area terminal can be easily solved. Therefore, while satisfying the technical constraints of multistage repeater radios, the optimal installation location of wide area terminals can be calculated so that a small number of wide area terminals can cover (cover) all measuring instruments with communication functions in a given area. it can.

In the above aspect, it is preferable that the total cost is calculated by the following mathematical formula 1.
[Formula 1]
(Total cost) = (number of wide area terminals) x (unit price of wide area terminals) + (months of communication line usage) x (monthly price of communication line) + (number of meter readings by meter reader) x (unit price of meter reading by meter reader)

  According to this aspect, it is possible to accurately calculate the installation location of the wide-area terminal that is low-cost based on the total cost that specifically considers the communication cost of the wide-area terminal and the cost of manual meter reading.

  In said aspect, it is preferable that the said measuring device with a communication function is a smart meter.

  According to this aspect, in the case where the multistage relay wireless device is installed in the smart meter step by step, the installation location of the wide area terminal that is low in cost can be calculated.

  Another aspect of the present disclosure made to solve the above-described problems is that a multi-stage relay wireless network configured by a multi-stage relay radio set installed in a measuring instrument with a communication function, and the multi-stage relay radio network of the multi-stage relay radio network. In a program for causing a simulation apparatus to execute a simulation of a location of a wide area terminal in a communication system having a wide area communication unit in which a wide area terminal connected to a relay radio is installed, the multistage relay radio is installed step by step Sometimes, the installation location of the wide area terminal is calculated in consideration of the total cost including the cost of the wide area terminal and the cost of manual meter reading by the meter reader, assuming the construction status of the multistage relay wireless network It is characterized by.

  According to the simulation method and program for the installation location of the wide area terminal of the present disclosure, it is possible to calculate the installation location of the wide area terminal that is low in cost in the case where the multistage relay radio is installed in stages.

It is a schematic diagram of the communication system for smart meters of this embodiment. It is a figure which shows an example of the transition with time progress of the introduction number of a multistage relay radio, the number of automatic meter-reading, and the introduction number of a wide area terminal. It is a figure which shows when two multistage relay radio | wireless networks are united within an area network. It is a figure which shows that a gas meter becomes validation in order (expiration of the validity period of certification), and a multistage relay wireless network grows. It is a figure which shows the example of calculation of m1 [i], m2 [i], and m3 [j] when it is shown by FIG. It is a figure which shows when a certain gas meter is validated and two multistage relay radio networks are united. It is a figure which shows the example of calculation of m1 [i], m2 [i], and m3 [j] when it is shown by FIG.

  Hereinafter, an embodiment of the simulation method and program of the installation location of the wide area terminal of the present disclosure will be described. In this embodiment, a smart meter which is a gas meter having a communication function in a gas meter is taken as an example of a measuring instrument with a communication function. In this embodiment, a wide-area terminal is used to perform wide-area communication in a smart meter communication system that communicates measurement values of a smart meter.

<Outline of smart meter communication system>
First, an outline of the smart meter communication system 1 will be described. As shown in FIG. 1, the smart meter communication system 1 includes a multistage relay wireless network 11 and a wide area communication unit 12.

  In the multistage relay wireless network 11, a multistage relay radio 21 is installed in the smart meter 23 of each customer 22. In this way, the multistage relay wireless network 11 includes a plurality of multistage relay radio devices 21 installed in the smart meter 23.

  The multistage relay radio 21 is a short-range communication type radio that relays (multistage relays) the measurement value data of the smart meter 23 via a plurality of multistage relay radios 21. The multistage relay radio 21 does not incur communication costs, but has a limited memory capacity for cost reduction. The number of networks in the network (number of units that can be arranged in the multistage relay wireless network 11) and the number of relay stages (number of stages that can be relayed) ) Is limited. For example, the maximum number in the network is 50 and the maximum number of relay stages is 15.

  The consumer 22 is a household that receives demand for gas, for example. The smart meter 23 is a gas meter having a communication function in the gas meter.

  The wide area communication unit 12 includes a wide area terminal 31, a relay station 32, and a center 33. The wide area terminal 31 is a terminal capable of wide area communication, and is connected to one multistage relay radio 21 in the multistage relay radio network 11. The wide area communication using the wide area terminal 31 incurs communication costs like a mobile phone. Moreover, since the wide area terminal 31 selects and installs one from the plurality of consumers 22, there is a degree of freedom in the installation method. The relay station 32 relays communication between the wide area terminal 31 and the center 33. The center 33 is a place for receiving data of measurement values of the smart meter 23 sent by communication from the wide area terminal 31 via the relay station 32.

<Regarding the calculation of low-cost wide area terminal installation location>
In such a smart meter communication system 1, as a background, it is necessary to reduce the number of wide area terminals 31 in order to reduce the introduction cost.

  Therefore, in order to minimize the number of wide area terminals 31 in a predetermined area, the situation where the smart meter 23 is introduced to all the houses in the predetermined area is assumed, the optimization problem is solved, and the location of the wide area terminal 31 is determined. It is thought that it can be found by deciding.

  However, on the other hand, the smart meter 23 is efficiently introduced together with the multistage relay radio 21 at the timing of exchanging the existing meter (gas meter) every 10 years (replacement associated with the expiration of the validity period of the verification). is there.

  Therefore, in the present embodiment, on the premise of such stepwise introduction of the multistage relay radio 21, a method for introducing the wide area terminal 31 is proposed in which the number of wide area terminals 31 is small and the meter reading cost is low.

  As shown in FIG. 2, regarding the introduction of the multistage relay radio 21 in stages, the multistage relay radio 21 and the wide-area terminal 31 are able to perform meter replacement (for example, from an existing meter to a smart meter 23 performed every 10 years). Will be introduced at the same time. In this way, for example, the multistage relay wireless devices 21 are installed in all the smart meters 23 in 10 years. Further, one wide area terminal 31 is installed for each of the plurality of multistage relay radio devices 21. In FIG. 2, the change in the number of installed multistage relay radios 21 (the number of installed multistages) is shown by a solid line, the change in the number of automatic meter readings is shown by a broken line, and the number of installed wide area terminals 31 (the number of installed wide area terminals). Is shown by a one-dot chain line. At this time, it is desirable that the number of installed wide area terminals 31 is small and the meter reading cost is reduced. Therefore, since the optimal balance changes depending on the unit price of the wide area terminal 31, the automatic meter reading cost (= communication cost of the wide area terminal 31), and the cost unit price of manual meter reading, the introduction method of the wide area terminal 31 is evaluated by “total cost”.

  In the present embodiment, as a method of simulating the installation location of the wide area terminal 31, when installing the multistage relay wireless device 21 in stages, the cost of the wide area terminal 31 is assumed while assuming the construction status of the multistage relay wireless network 11. The installation location of the wide area terminal 31 is calculated in consideration of the total cost including the cost of manual meter reading by the meter reader who reads the measured value of the smart meter 23. Specifically, the simulation apparatus is caused to execute the simulation of the installation location of the wide area terminal by a program in which this simulation method is defined.

Here, the “total cost” is expressed by the following mathematical formula 1.
[Formula 1]
(Total cost) = (Number of wide area terminals) x (Unit price for wide area terminals [yen / unit]) + (Monthly communication line usage month) x (Monthly communication line unit price [yen / month / line]) + ( Number of meter readings per month) x (Unit reading per meter [yen / month / meter])
Here, the “month of communication line usage month” is the number of months that the wide area terminal 31 has used the communication line (communication line usage month). The “number of meter readings by a monthly meter reader” is the total number of meter readings by a meter reader (the number of meter readings by a meter reader). Note that the cost required for the smart meter 23, the multistage relay radio 21, and the center 33, which is necessary regardless of how the wide area terminal 31 is installed, is excluded.

  Therefore, in the present embodiment, a logic called “connection priority extension” is adopted as a method for reducing the total cost. In this logic, first, a predetermined area is divided into areas connected by only the distance restriction of the multistage relay radio 21, and the wide area terminal 31 of each wide area terminal 31 is divided into each area divided network (hereinafter referred to as “area network 41”). Calculate the installation location. That is, the predetermined area is divided by the area network 41 which is a range connected by a distance (for example, 25 m) at which the multistage relay radio 21 can communicate with one hop. Then, the location of the wide area terminal 31 is calculated for each area network 41.

  When the location of the wide area terminal 31 is calculated for each area network 41 as described above, the location of the wide area terminal 31 is provisionally determined by the “connection priority” rule for each area network 41.

Here, the rule of “connection priority” is as follows.
If the meter reading ratio is given the highest priority and the meter reading is not possible because the meter reading is impossible and meter reading is impossible, the wide area terminal 31 and the multistage relay radio 21 are installed. On the other hand, when the meter can be connected to the wide area terminal 31, only the multistage relay radio 21 is installed.
If the meter reading rate does not decrease when only the multistage relay radio 21 is used when the wide area terminal 31 is installed (occurred after the 10th year), the multistage relay radio 21 Only. On the other hand, if the meter reading rate decreases, the wide area terminal 31 and the multistage relay radio 21 are installed.

  Thereby, for example, as shown in FIG. 3A, in the multistage relay wireless network 11A, the location of the wide area terminal 31 is provisionally determined at a position indicated by “X1” (position indicated by a black circle in the figure). . In other words, in the multistage relay wireless network 11A, provisional decision is made to install the wide area terminal 31 for the multistage relay radio 21 indicated by “X1”. Further, in the multistage relay wireless network 11B, the arrangement location of the wide area terminal 31 is provisionally determined at a position indicated by “X2” (a position indicated by a black circle in the drawing). In other words, in the multistage relay wireless network 11B, provisional decision is made to install the wide area terminal 31 for the multistage relay radio 21 indicated by “X2”. In FIG. 3, it is shown that the multistage relay radio device 21 is installed step by step in the order of “X1”, “X2”,..., “X59”.

  Next, when the two multistage relay wireless networks 11 are merged (merged), the location of the wide area terminal 31 provisionally determined in the multistage relay wireless network 11 whose total cost is minimized is adopted, The multistage relay wireless network 11 is merged. The location where the wide area terminal 31 is provisionally determined in the other multistage relay wireless network 11 is canceled.

  Thereby, for example, as shown in FIGS. 3A and 3B, when merging the multistage relay radio networks 11A and 11B, the position indicated by “X2” provisionally determined by the multistage relay radio network 11B is set. If the total cost can be reduced by setting the location of the wide area terminal 31, the new location of the wide area terminal 31 after merging is provisionally determined at the position indicated by "X2". That is, when merging the multistage relay wireless networks 11A and 11B, the total cost when the location of the wide area terminal 31 is set to the position indicated by “X1” and the position indicated by “X2” is compared. Choose the one with the lowest total cost. As a result, a provisional decision is made to install the wide area terminal 31 in the multistage relay radio 21 indicated by “X2” in the multistage relay radio network 11 after merging.

  Then, after considering the technical restrictions of the multistage relay radio 21 (restriction of the number of units in the network (for example, a maximum of 50 units) and the limitation of the number of relay stages (for example, a maximum of 15 stages), after a predetermined year (for example, after 10 years) The location where the wide area terminal 31 is provisionally determined when the multistage relay wireless network 11 cannot be merged is determined as the final location where the wide area terminal 31 is arranged.

  In this way, in the present embodiment, the location of the wide area terminal 31 that can be reduced in cost is calculated in consideration of the network construction status of the multistage relay radio 21. In this embodiment, since the meter exchange order is considered in this way, a network that matches the actual situation can be configured.

<About Examples>
Next, an example of calculating the installation location of the wide area terminal 31 in this embodiment will be described.

First, as a premise, each gas meter has the following [Information 1] (multistage information) when it is assumed that the multistage relay radio 21 and the wide area terminal 31 are installed when the gas meter is first validated (expiration of the validity period of the certification). ) And update over time.
[Information 1]
・ Monthly communication line usage month (m1 [i])
・ Number of meter readings by month total meter reader (m2 [i])
Note that i is a gas meter id (a gas meter identification number).

Further, it is assumed that the multistage relay wireless network 11 holds the following [Information 2] and updates it with time evolution.
[Information 2]
・ Number of bases per month (m3 [j])
Note that j is the multistage relay wireless network id (identification number of the multistage relay wireless network 11). Also, m3 [j] matches the total value of m1 [i] in all the multistage relay radio devices i included in the multistage relay radio network j. Therefore, it is not necessary to hold the value of m3 [j] at the time of mounting.

  Thus, for example, calculation examples of m1 [i], m2 [i], and m3 [j] when the multistage relay wireless network j grows as shown in FIG. 4 in the order of gas meters a, b, and c. Will be explained.

  First, assuming that the multimeter relay radio device 21 and the wide area terminal 31 are installed in the gas meter a because the gas meter a is satisfied at t = 1 (first month), m1 [a] = 1, m2 [a ] = 0 and m3 [1] = 1.

  Subsequently, when the gas meter b is validated at t = 2 (second month), the multistage relay radio 21 and the wide area terminal 31 are installed in the gas meter a at m = 1 [a] and m2 [a] at t = 1. Therefore, m1 [a] = 2 and m2 [a] = 0. In addition, m1 [b] and m2 [b] are based on the premise that the multistage relay radio 21 and the wide area terminal 31 are installed in the gas meter b at t = 2, and the multistage relay radio network 11 is configured by the gas meters a and b. For this reason, when the gas meter a at t = 1 is verified, it is assumed that only the multistage relay radio 21 is installed in the gas meter a. As a result, m1 [b] = 1 and m2 [b] = 1.

  Subsequently, at t = 3 (third month), the values are as shown in FIG. As shown in FIG. 5, the value of m1 [a] starts with “1” at t = 1, and thereafter increases by “1” every month. Further, the value of m2 [b] is the value of m3 [1] at t = 1 one month ago, and the same value thereafter. Similarly, the value of m2 [c] is the value of m3 [2] at t = 2 one month ago, and the same value thereafter. In this way, when a gas meter is validated in a multistage relay wireless network 11 and the multistage relay radio 21 is added, the values of m1 [i], m2 [i], and m3 [j] are as shown in FIG. Update as shown in.

  Next, as shown in FIG. 6, a case where two multistage relay wireless networks 11 are merged due to gas meter validation will be described.

  First, at t = T (T month), as shown in FIG. 6, the gas meter A that can be connected to the first multistage relay radio network 11-1 and the second multistage relay radio network 11-2 is satisfied. Think about the situation. At this time, the id (identification number) of an arbitrary multistage relay radio 21 of the first multistage relay radio network 11-1 is i1, and the id of an arbitrary multistage relay radio 21 of the second multistage relay radio network 11-2 is set. i2 and when t = T-1 ((T-1) month), m1 [i], m2 [i], and m3 [j] have values as shown in FIG. To do.

  Then, at t = T, the gas meter A is validated, and when two multistage relay radio networks (the first multistage relay radio network 11-1 and the second multistage relay radio network 11-2) are merged, m1 [i] , M2 [i], m3 [j] have values as shown in FIG. Note that N = a3 + b3 + (number of nodes after merging).

  m1 [i] and m2 [i] are values when it is assumed that the multistage i is the wide area terminal 31 and the multistage relay radio 21 (the wide area terminal 31 is installed for the multistage relay radio i). Therefore, it must be considered that the multistage relay wireless network 11 that was not included in the multistage i at the time of merging did not include the wide area terminal 31 and the multistage relay radio 21. As a result, the value of m2 [i] is updated to the original value plus the number of monthly bases (m3 [j]) of the other multistage relay wireless network 11.

In addition, if there is multistage information, cost calculation for each installation location of the wide area terminal 31 can be easily performed. For example, for each unit price, the wide-area terminal unit price (yen / unit) is c4, the communication line monthly unit price (yen / month / line) is c5, and the meter reading unit price (yen / month / meter) is c6. Then, the cost cost of the multistage relay radio network 11 to which the multistage relay radio apparatus i1 belongs when assuming that the wide area terminal 31 is installed for the multistage relay radio apparatus i1 can be expressed by the following Equation 2.
[Formula 2]
cost = c4 + m1 [i1] × c5 + m2 [i1] × c6

<Operational effects of this embodiment>
As described above, the simulation method and program for the installation location of the wide area terminal 31 according to the present embodiment assumes that the multi-stage relay wireless network 11 is constructed while the multi-stage relay wireless network 21 is installed step by step, In consideration of the above, the installation location of the wide area terminal 31 is calculated. The total cost includes the cost of the wide area terminal 31 and the cost of manual meter reading by the meter reader who reads the meter.

  Thereby, in the case where the multistage relay wireless device 21 is installed step by step, when the multistage relay wireless network 11 is constructed, the total number of wide-area terminals 31 is reduced in consideration of the total cost, and manual meter reading is performed. The installation location of the wide-area terminal 31 that is low in cost can be calculated by reducing the cost of.

  Further, the simulation method and program for the installation location of the wide area terminal 31 according to the present embodiment divide a predetermined area by the area network 41. Then, in the process of installing the multistage relay wireless device 21 step by step for each area network 41, the installation location of the wide area terminal 31 is provisionally determined for each multistage relay wireless network 11. Further, when the multistage relay wireless network 11 is constructed, the installation location of the wide area terminal 31 provisionally determined by the multistage relay wireless network 11 that minimizes the total cost when the two multistage relay wireless networks 11 are merged Is adopted as the installation location of the newly determined wide area terminal 31, and the two multistage relay wireless networks 11 are merged. Then, considering the technical restrictions of the multistage relay radio 21, when the multistage relay radio 21 is installed in stages until a predetermined year (for example, after 10 years), the two multistage relay radio networks 11 are installed. Is determined as the final installation location of the wide-area terminal 31.

  In this way, when the multistage relay radio network 11 is merged to construct the multistage relay radio network 11 in the process of installing the multistage relay radio 21 in stages, the total cost is minimized. The installation location of the wide area terminal 31 provisionally decided in the multistage relay wireless network 11 to be adopted is adopted. Therefore, the multistage relay wireless network 11 can be constructed while searching for the installation location of the wide area terminal 31 that is low in cost. As a result, the multistage relay radio 21 is installed step by step until a predetermined year later, and the two multistage relay radio networks 11 cannot be merged due to technical limitations of the multistage relay radio 21, and the multistage relay radio network 11 is installed. When the construction is completed, it is possible to specify the installation location of the wide area terminal 31 that is low in cost. Thus, in the case where the multistage relay radio device 21 is installed step by step, the installation location of the wide area terminal 31 that is low in cost can be calculated. When merging the multistage relay radio networks 11, three or more multistage relay radio networks 11 may be merged.

  In addition, the predetermined area is divided by the area network 41 which is a range where the multistage relay radio 21 is connected by a distance that can be communicated in one hop, and the location of the wide area terminal 31 is calculated for each area network 41. Thereby, the number of nodes to be calculated can be reduced, and the problem scale can be reduced to a level at which the optimization problem regarding the installation location of the wide area terminal 31 can be easily solved. Therefore, the optimal installation location of the wide area terminal 31 is set so that all the smart meters 23 in a predetermined area can be covered (covered) with a small number of wide area terminals 31 while satisfying the technical restrictions of the multistage relay radio 21. Can be calculated.

  Further, the total cost is calculated by Equation 1 above. In this way, it is possible to accurately calculate the installation location of the wide-area terminal 31 that is low-cost based on the total cost that specifically considers the communication cost of the wide-area terminal 31 and the cost of manual meter reading.

  In addition, as a method of reducing the problem scale of the area network 41, for example, the area network 41 is defined with one hop of about 25 m, but the area network 41 may be divided by recalculating, for example, 25 m or less. .

  In addition, as described above, the smart meter 23 which is a gas meter having a communication function in the gas meter is given as an example of the measuring device with the communication function. However, the present invention is not limited to this, and the present embodiment is not limited to the wide area communication. Can be applied to measuring instruments with various communication functions, such as environmental monitoring and temperature measuring instruments, and building measuring instruments that measure distortion of bridges, etc. .

  It should be noted that the above-described embodiment is merely an example, and does not limit the present disclosure in any way, and various improvements and modifications can be made without departing from the scope of the present invention.

1 Smart Meter Communication System 11, 11A, 11B Multistage Relay Wireless Network 11-1 First Multistage Relay Wireless Network 11-2 Second Multistage Relay Wireless Network 12 Wide Area Communication Unit 21 Multistage Relay Radio 22 Customer 23 Smart Meter 31 Wide Area Terminal 32 Relay station 33 Center 41 Area network

Claims (4)

A multi-stage relay radio network configured by a multi-stage relay radio installed in a measuring instrument with a communication function, and a wide-area communication unit in which a wide-area terminal connected to one multi-stage relay radio of the multi-stage relay radio network is installed. In the simulation method of the installation location of the wide area terminal in the communication system having,
When installing the multistage relay radio in stages, while considering the construction status of the multistage relay radio network, considering the total cost including the cost of the wide area terminal and the cost of manual meter reading by the meter reader Calculating the location of the wide area terminal;
The total cost is calculated by the following formula 1.
[Formula 1]
(Total cost) = (number of wide area terminals) x (unit price of wide area terminals) + (months of communication line usage) x (monthly price of communication line) + (number of meter readings by meter reader) x (unit price of meter reading by meter reader)
A method for simulating a location of a wide area terminal characterized by In the simulation method of the installation location of the wide area terminal of Claim 1,
A predetermined area is divided by an area network that is a range where the multistage relay radio is connected by a distance that can be communicated in one hop,
In the process of installing the multistage relay radio step by step in the area network unit,
Temporarily determine the installation location of the wide area terminal for each multistage relay wireless network,
When merging a plurality of multistage relay wireless networks and constructing the multistage relay wireless network, a new provisional location of the wide area terminal that can minimize the total cost is determined,
Considering the technical restrictions of the multistage relay radio, when the multistage relay radio is installed in stages until a predetermined year later, it is provisionally decided when it becomes impossible to unite a plurality of the multistage relay radio networks Determining the installation location of the wide area terminal as the final installation location of the wide area terminal,
A method for simulating a location of a wide area terminal characterized by In the simulation method of the installation location of the wide area terminal of Claim 1 or 2 ,
The measuring device with communication function is a smart meter;
A method for simulating a location of a wide area terminal characterized by A multi-stage relay radio network configured by a multi-stage relay radio installed in a measuring instrument with a communication function, and a wide-area communication unit in which a wide-area terminal connected to one multi-stage relay radio of the multi-stage relay radio network is installed. In a program for causing a simulation apparatus to execute a simulation of a location of a wide area terminal in a communication system having
When installing the multistage relay radio in stages, while considering the construction status of the multistage relay radio network, considering the total cost including the cost of the wide area terminal and the cost of manual meter reading by the meter reader Calculating the location of the wide area terminal;
The total cost is calculated by the following formula 1.
[Formula 1]
(Total cost) = (number of wide area terminals) x (unit price of wide area terminals) + (months of communication line usage) x (monthly price of communication line) + (number of meter readings by meter reader) x (unit price of meter reading by meter reader)
A program characterized by

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