JP2006058096A - Wireless communication device and communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless communication device and a communication system, aiming at acquiring position information utilized for route design of a movable-body network by a radar while not acquiring it from a second mobile wireless device. <P>SOLUTION: This wireless communication device is equipped with a radar part 110 for emitting a radiowave in the direction of a second wireless communication device to acquire the reflection of the emitted radiowave as information on an object and calculating position information on the second wireless communication device from the information on the object. The radar part 110 delivers the calculated position information on the second wireless communication device to a data conversion part 23. The conversion part 23 converts the position information on the second wireless communication device delivered from the radar part 110 into a coordinate system used in a route design part 21 and delivers the converted data to the design part 21. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an ad hoc network that does not have a fixed base station and constructs a network by relaying between wireless communication devices and performs route design using position information acquired from a radar.

There has been a “mobile radio apparatus” described in Japanese Patent Application Laid-Open No. 2000-224640 as an apparatus that uses position information when selecting an optimum route when communication is performed from a mobile radio apparatus via a fixed base station. .
JP 2000-224640 A

  The route selection in Japanese Patent Application Laid-Open No. 2000-224640 “Mobile Radio Device” is performed by acquiring position information of another mobile radio device from the mobile radio device. Here, when a certain mobile radio apparatus is equipped with a radar to grasp the position of another mobile body, the position information for designing the communication path is separate from the position information used by the radar. In this case, the communication resource (data transmission band used when data transmission is performed) is consumed to acquire position information.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to acquire position information used for route design of a mobile network by a radar and not from other mobile radio apparatuses.

  When acquiring the position information of another wireless communication apparatus, the wireless communication apparatus of the present invention receives the reflected wave of the radio wave by the radar unit and calculates the position information of the other wireless communication apparatus. For this reason, the position information of other wireless communication devices is conventionally received using the communication band (communication resource), but the position information of other wireless communication devices can be acquired without using the communication resources. There is an effect that can be done. Conventionally, power for receiving is consumed, but there is an effect that power can be saved. Conventionally, since other wireless communication devices transmit position information, there is a concern that the position information may be intercepted. However, even if the other wireless device does not transmit position information, the other wireless device Since the position information can be calculated, the security can be improved.

Embodiment 1 FIG.
In this embodiment, an example of a wireless communication apparatus that includes a radar unit and acquires position information of another wireless communication apparatus and also acquires position information of another wireless communication apparatus from another wireless communication apparatus will be described. . In addition, it is assumed that the wireless communication device and other wireless communication devices are mounted on a mobile body, for example, a vehicle, a ship, or an airplane, and an ad hoc network between the mobile bodies is constructed.

  FIG. 1 is a block diagram showing the configuration of the wireless communication apparatus according to this embodiment. In the figure, a mobile 1 is equipped with a wireless communication device 2 that is an example of the invention. The wireless communication device 2 includes a wireless communication unit 20 that executes functions related to communication, and a radar unit 110 that executes functions related to radar. The wireless communication unit 20 includes a route design unit 21 that performs route design of an ad hoc network using its own position information and position information of another wireless communication device, an antenna 27 that receives a positioning signal 203, and an antenna 27 that receives the signal. The own position information acquisition unit 24 that calculates its own position information using the positioning signal 203 and the position information holding unit 22 that holds its own position information calculated by the own position information acquisition unit 24 are provided. In addition, the wireless communication unit 20 designs the path of the other position information acquisition unit 25 that receives the position information of the other wireless terminal device transmitted from the other wireless communication device, and the coordinate system of the position information of the other wireless terminal device. And a data conversion unit 23 for converting into a coordinate system used by the unit 21.

  In FIG. 1, the radar unit 110 receives a reflected wave that is emitted from a radio wave and is reflected by another radio communication device, and the other radio communication device receives the reflected wave from the received reflected wave. A target information check unit 114 that calculates position information and a target information holding unit 112 that holds position information of other wireless communication devices calculated by the target information check unit 114 are provided. The radar unit 110 also includes a radar indicator that displays the position of the other wireless terminal device on the radar based on the position information of the other wireless terminal device held by the target information holding unit 112. Further, the position information of the other wireless terminal device calculated by the target information confirmation unit 114 is transferred to the data conversion unit 23 via the other position information acquisition unit 25 and converted into coordinate system data used by the route design unit 21. And held in the position information holding unit 22.

  In addition, D1 to D4 in FIG. The own position information acquisition unit 24 transmits the calculated own position information D1 to another wireless communication device. Further, the other position information acquisition unit 25 receives the position information D2 of another wireless communication device transmitted from another wireless communication device. The target information confirmation unit 114 receives the target information D3 which is a reflected wave reflected back to another wireless communication device. Here, since the other wireless communication apparatus is mounted on the vehicle, the reflected wave in this case is reflected back to the vehicle. Further, the position information D4 of the other wireless terminal device calculated by the target information confirmation unit 114 is transmitted from the target information confirmation unit 114 to the other position information acquisition unit 25. Since the present invention relates to the route design of a wireless communication device, a modem for transmitting / receiving wireless data is omitted in FIG.

  The wireless communication device 2 in FIG. 1 includes the wireless communication unit 20 and the radar unit 110 and is integrated, but the wireless communication unit 20 and the radar unit 110 may be separate devices. However, when separate devices are used, the position information D4 of another wireless communication device is transmitted or received by wire or wireless in order to transmit the position information D4 of another wireless communication device from the radar unit 110 to the wireless communication unit 20. To be able to. Further, when there are a plurality of vehicles equipped with wireless communication devices that are to form an ad hoc network, at least one vehicle is equipped with a wireless communication device including the radar unit 110, and the remaining vehicles are not equipped with the radar unit 110, A wireless communication device including only the wireless communication unit 20 is mounted. In the following description, a moving body equipped with the radar unit 110 is referred to as a moving body 1r, and a moving body that does not include the radar unit 110 is referred to as a moving body 1s. Since the wireless communication apparatus of the present invention requires information from the radar, the implementation is limited to the mobile body 1r on which the radar is mounted. Since the other mobile bodies constituting the ad hoc network do not need to be equipped with radar, the mobile body 1s is generally acceptable.

  Next, a network model to be route designed will be described. FIG. 2 is a diagram schematically showing the state of a communication system in which a network is formed by three mobile objects. In FIG. 2, the communication system includes one mobile body 1r and two mobile bodies 1s. A radar unit 110 is mounted on the moving body 1r, and no radar is mounted on the two moving bodies 1s. For this reason, in the mobile body 1r, the network construction between the three mobile bodies is performed using the position information of the other wireless communication device calculated by the radar unit 110. When emphasizing the function as a component of the network, the mobile units 1, 1s, 1r are called nodes, and the connection between the mobile units 1, 1r, 1s is called a link.

  Next, with reference to FIGS. 1 to 3, a procedure for acquiring position information of itself and other wireless communication devices when the wireless communication unit 20 performs route design will be described. FIG. 3 is a flowchart showing a procedure for acquiring position information of the own node and other nodes according to this embodiment. When the wireless communication unit 20 uses the route design unit 21 to design a route, the route design can be performed efficiently by using the position information of each node in the network. The position of the own node can be easily obtained using GPS (Global Positioning System) or using a positioning signal from a quasi-zenith satellite. For example, in FIG. 1, the positioning signal 203 transmitted from the satellite group 200 including the quasi-zenith satellite 201 and the GPS satellite 202 is received by the antenna 27. The own position information acquisition unit 24 acquires (calculates) the position information of the own node using the positioning signal 203 received by the antenna 27 (S10). The acquired (calculated) own node position information is transmitted to another node if necessary (D1 in FIG. 1).

  On the other hand, the location information of other nodes in the network needs to be acquired from other nodes by some method. The other position information acquisition unit 25 in FIG. 1 receives the position information transmitted by another node, if necessary ((D2), S12). Here, “if necessary” means that the target information confirmation unit 114 receives the position information of the other node, and the target information confirmation unit 114 passes the position information of the other node to the other position information acquisition unit 25. In some cases, it is considered unnecessary. For example, the radar unit 110 has some trouble and the target information confirmation unit 114 cannot calculate the position information of the other node. If it cannot be passed to the acquisition unit 25, it is considered necessary. The position information received by the other position information acquisition unit 25 is stored in the position information holding unit 22 via the data conversion unit 23 (S14), and is used when the route design unit 21 performs route design. FIG. 4 is a schematic diagram showing the state of the communication system when the position information D2 of another node is transmitted from the wireless communication device mounted on the mobile body 1s to the wireless communication device mounted on the mobile body 1r via the network. . The communication system includes one mobile body 1r and two mobile bodies 1s.

  Here, when the node (wireless communication apparatus) mounted on the moving body 1r includes the radar unit 110, the radar unit 110 detects the position of another node. The radar unit 110 emits radio waves, and receives target information (D3) that is a reflected wave by the target information confirmation unit 114, thereby calculating position information (D4) of another node (S12). The calculated position information (D4) of the other node is held in the target information holding unit 112 and displayed on the radar indicator 111. In FIG. 1, the radio wave emission function is omitted. In the wireless communication device 2, if the radar unit 110 uses the position information of another node held in the target information holding unit 112, that is, if it can be passed to the other position information acquisition unit 25, the other position information acquisition unit 25 There is no need to receive position information (D2) from another node. This can save communication resources and power and improve security. In FIG. 4, the wireless communication device 2 of the moving body 1r receives the position information D2 and the radar target information D3 from the moving body 1s of the other node, but in FIG. 25 receives the position information D4 of the other node from the radar unit 110 without receiving the position information D2. Accordingly, the mobile units 1r and 1s in FIG. 2 can save processing, communication resources, and power for transmitting and receiving the position information D2, and the mobile unit 1s suppresses unnecessary information transmission and improves security. be able to.

  Next, the data conversion unit 23 that converts the position information D4 of another node acquired by the wireless communication unit 20 from the radar unit 110 into a data format that can be used by the route design unit 21 will be described. First, the coordinates used by the route design unit 21 will be described. FIG. 5 is a diagram illustrating a network model used in the wireless communication device 2 to specify a node position in the network. In FIG. 5, the orthogonal coordinate system 120 is a coordinate system used by the route design unit 21. In FIG. 5, the X-axis is directed downward, the Y-axis is directed rightward, and in the drawing, the top corresponds to the north 102 and the right corresponds to the east 103. One scale for each of the X axis and Y axis is 1 km. Node positions are indicated by 107a, 107b, and 108. FIG. 5 shows a case where there are three nodes, that is, the node 108 that is the node 1, the node 107a that is the node 2, and the node 107b that is the node 3. The distance 104 indicates the distance from the origin where the node 108 is located to the node 107a. An angle 105 (azimuth 105) indicates an angle (azimuth) from north 102, that is, the negative direction of the X axis to the node 107a.

  FIG. 6 shows a polar coordinate system used in the radar unit 110. That is, the position information (D4) of the other node calculated by the target information confirmation unit 114 is based on the polar coordinate system. In FIG. 6, the polar coordinate system 100 includes a zenith 101, a north 102, and an east 103. The target node 107 a is indicated by a distance 104 from the node 108 at the origin, an azimuth (angle) 105 from the north 102, and an elevation angle 106. FIG. 7 shows a display example of the radar indicator 111. The node 107a which is the target shown in FIG. 7 is indicated by the distance 104 from the node 108 at the origin, the azimuth (angle) 105 from the north 102, and the elevation angle 106 as in FIG. The node 108 described above is the mobile body 1r shown in FIGS. 2 and 4, and the node 107a and the node 107b correspond to the two mobile bodies 1s shown in FIGS.

  FIG. 8 is a table in the case where the positions of the node 108, the node 107a, and the node 107b in FIG. 5 are represented by the orthogonal coordinate system 120 in FIG. From FIG. 8, it can be seen that the coordinates (X, Y) of the node 108, the node 107a, and the node 107b are (0, 0), (−2, 3.4), and (3, 3), respectively. FIG. 9 is a table in the case where the positions of the node 108, the node 107a, and the node 107b in FIG. 5 are represented by the polar coordinate system 100 in FIG. From FIG. 9, the node 108, the node 107a, and the node 107b have (distance 104, azimuth 105 (degrees), elevation angle 106 (degrees)) of (0, 0, 0), (4, 60, 0), ( It can be seen that the position is 3 × √2,135,0). FIG. 10 is a table in the case where the positions of the node 108, the node 107a, and the node 107b in FIG. However, it is assumed that the node 108 is at 35 degrees 21 minutes 0 seconds north latitude and 139 degrees 32 minutes 0 seconds east longitude. From FIG. 10, the node 108, the node 107a, and the node 107b have (35 ° 21′0 ″, 139 ° 32′0 ″), (35 ° 22 ”) (north latitude (latitude) 123, east longitude (longitude) 124), respectively. '0 ″, 139 ° 34′36 ″) and (35 ° 19′30 ″, 139 ° 34′15 ″).

  Next, the operation of the data conversion unit 23 that converts the position information D4 of the other node acquired from the radar unit 110 by the wireless communication device 2 into the coordinate system data used by the route design unit 21 will be described. The target information D3 received by the radar unit 110 is based on the polar coordinate system 100 shown in FIG. 6, and as shown in FIGS. 6 and 9, the distance 104 (from the point where the node 108 as the reception point is located ( R), azimuth 105 from the north (denoted as θ), and elevation angle 106 (denoted as A). The conversion of the node 108, node 107a, and node 107b in FIG. 5 from (R, θ, A) in FIG. 9 to (X, Y) in FIG. 8 performed by the data conversion unit 23 in FIG. The conversion from the data based on the system to the data based on the orthogonal coordinate system is expressed by “X = −RcosAcosθ, Y = RcosAsinθ”.

  Further, when the other node position information D2 acquired from the other node by the wireless communication device 2 is the longitude and latitude (northern latitude, east longitude) shown in FIG. 10, (X, Y in FIG. 8 performed by the data conversion unit 23 in FIG. 1 is performed. In other words, the conversion of the position information represented by the latitude and longitude into data based on the orthogonal coordinate system is as follows. “X = −2 × latitude difference (minutes), or X = −1 / 30 × latitude difference (seconds)”, “Y = 3/4 × longitude difference (minutes), or Y = 1/45 × longitude difference ( Sec) ". However, 1 degree (°) = 60 minutes (′) and 1 minute (′) = 60 seconds (″).

  In the above description, it is assumed that all nodes are moving vehicles, for example, the moving body 1 or wireless communication devices mounted on the vehicles. This means that route design is possible even when the position changes due to movement, and is effective even when the node does not move. That is, the present invention can also be used in a non-moving building equipped with a wireless communication device and a radar.

  In addition, the position information calculated by the own position information acquisition unit 24 is not converted into the coordinate system used by the route design unit 21 by the data conversion unit 23. This is because the self-location information acquisition unit 24 has a function similar to that of the data conversion unit 23 although not shown, and includes a data conversion unit therein. Alternatively, the position information of the self is calculated based on the same coordinate system as the coordinate system used by the route design unit 21. Alternatively, the own position information calculated by the own position information acquisition unit 24 may be converted by the data conversion unit 23, and the converted own position information may be passed to the route design unit 21.

  The wireless communication unit 20 described above is realized by a computer system having the hardware configuration of FIG. In FIG. 11, the computer system includes a CPU (Central Processing Unit) 137 that executes a program. The CPU 137 is connected to the ROM 139, RAM 140, communication board 144, CRT display device 141, K / B 142, mouse 143, FDD (Flexible Disk Drive) 145, magnetic disk device 146, CDD 186, printer device 187, scanner device 188 via the bus 138. Connected with. The RAM is an example of a volatile memory. ROM, FDD, CDD, magnetic disk device, and optical disk device are examples of nonvolatile memory. These are examples of a storage device or a storage unit. The communication board 144 is connected to the facsimile 310, the telephone 320, and the like. For example, the communication board 144, the K / B 142, the FDD 145, and the like are examples of the information input unit. For example, the communication board 144, the scanner device 188, the CRT display device 141, and the like are examples of an output unit.

  The magnetic disk device 146 stores an operating system (OS) 147, a window system 148, a program group 149, and a file group 150. The program group is executed by the CPU 137, the OS 147, and the window system 148.

  The program group 149 stores a program for executing the function described as “˜unit” in the description of the wireless communication device 2. The program is read and executed by the CPU. In the file group 150, what is described as “˜storage unit”, “˜information”, “˜determination result”, and [˜holding unit] in the above description of the embodiment is stored as “˜file”. ing.

  In addition, what has been described as “˜unit” in the above description of the embodiment may be realized by firmware stored in the ROM 39. Alternatively, it may be implemented by software alone, hardware alone, a combination of software and hardware, or a combination of firmware.

  The program for carrying out the above-described embodiment also includes other recordings such as a magnetic disk device, FD (Flexible Disk), optical disk, CD (compact disk), MD (mini disk), DVD (Digital Versatile Disk), etc. You may memorize | store using the recording apparatus by a medium.

  As described above, in the wireless communication device and the communication system according to this embodiment, the radar unit receives the reflected wave and receives other wireless communication without receiving the position information (D2) of the other wireless communication device. Since the position information of the apparatus is calculated, there is an effect that communication resources and power can be saved. In addition, since other wireless communication devices do not have to transmit their own location information, it is possible to prevent their own location from being intercepted by outsiders and to improve security.

  In the first embodiment, when a wireless communication apparatus equipped with a radar unit designs a communication route by the route design unit, the route design of the ad hoc network is performed using the position information acquired by the radar unit. An example was described. Further, an example has been described in which data conversion is performed when position information acquired by the radar unit is used.

Embodiment 2. FIG.
In this embodiment, an example of a wireless communication apparatus that does not include the other position information acquisition unit 25 will be described.

  FIG. 12 is a block diagram showing the configuration of the route design apparatus according to this embodiment. 12 is different from the wireless communication device 2 in FIG. 1 in that the wireless communication unit 20 in FIG. 12 does not include the other position information acquisition unit 25, the data conversion unit 23, and the position information holding unit 22. It is. Components other than those described above are the same as those in FIG. 1 and perform the same operations as those in FIG.

  The fact that the other position information acquisition unit 25 is not provided means that the radar unit 110 always inputs the target information D3. The reason why the data conversion unit 23 is not provided is that the coordinate system of the other wireless communication device calculated by the radar unit 110 from the target information D3 is the same as the coordinate system used by the route design unit 21. . Alternatively, the route design unit 21 may include a data conversion unit. The location information holding unit 22 is not provided because the location information acquisition unit 24 passes the calculated location information to the route design unit 21 without being stored in a file. The route design unit 21 may include the position information holding unit 22 to hold the own position information passed from the own position information acquisition unit 24. Further, the radar unit 110 passes the calculated position information D4 of the other wireless communication device to the route design unit 21 without storing it in a file. The route design unit 21 may include the position information holding unit 22 to hold the position information of another wireless communication device passed from the radar unit 110.

  As described above, even when the number of parts constituting the wireless communication device 2 is reduced, it is possible to provide position information used when the route design unit constructs an ad hoc network. By reducing the number of parts constituting the wireless communication device, there is an effect that the wireless communication device can be manufactured at low cost.

Embodiment 3 FIG.
In this embodiment, an example of a wireless communication apparatus that does not include the other position information acquisition unit 25 will be described.

  FIG. 13 is a block diagram showing the configuration of the route design apparatus according to this embodiment. The difference between the wireless communication device 2 in FIG. 13 and the wireless communication device 2 in FIG. 1 is that the wireless communication unit 20 in FIG. 13 does not include the other position information acquisition unit 25 and the position information holding unit 22. Components other than those described above are the same as those in FIG. 1 and perform the same operations as those in FIG.

  The fact that the other position information acquisition unit 25 is not provided means that the radar unit 110 always inputs the target information D3. The location information holding unit 22 is not provided because the location information acquisition unit 24 passes the calculated location information to the route design unit 21 without being stored in a file. The route design unit 21 may include the position information holding unit 22 to hold the own position information passed from the own position information acquisition unit 24. Further, the radar unit 110 passes the calculated position information D4 of the other wireless communication device to the route design unit 21 without storing it in a file. The route design unit 21 may include the position information holding unit 22 to hold the position information of another wireless communication device passed from the radar unit 110.

  As described above, even when the number of parts constituting the wireless communication device 2 is reduced, it is possible to provide position information used when the route design unit constructs an ad hoc network. By reducing the number of parts constituting the wireless communication device, there is an effect that the wireless communication device can be manufactured at low cost.

1 is a block diagram illustrating a configuration of a wireless communication apparatus according to a first embodiment. It is a figure which shows typically a mode that the network is formed with three mobile bodies. FIG. 6 is a flowchart showing a procedure for acquiring position information of the own node and other nodes according to the first embodiment. It is a schematic diagram which shows a mode when the positional information on another node is transmitted via a network. It is a figure which shows the network model and orthogonal coordinate system which are used with a radio | wireless communication apparatus in order to designate the node position in a network. It is a figure which shows the polar coordinate system used with a radar. It is a figure which shows the display of a radar indicator. It is a table | surface at the time of expressing the position of the nodes 1, 2, and 3 of FIG. 3 with the orthogonal coordinate system of FIG. 5 is a table when the positions of nodes 1, 2, and 3 in FIG. 3 are represented in the polar coordinate system of FIG. It is a table | surface at the time of expressing the position of the nodes 1, 2, and 3 of FIG. 3 with the latitude and the longitude. It is a hardware block diagram of the computer system which implement | achieves a radio | wireless communication part. FIG. 6 is a block diagram illustrating a configuration of a route design apparatus according to a second embodiment. FIG. 10 is a block diagram illustrating a configuration of a route design apparatus according to a third embodiment.

Explanation of symbols

  1, 1r, 1s mobile unit, 2 wireless communication device, 20 wireless communication unit, 21 route design unit, 22 position information holding unit, 23 data conversion unit, 24 own position information acquisition unit, 25 other position information acquisition unit, 27 antenna , 100 polar coordinate system, 101 zenith, 102 north, 103 east, 104 distance, 105 azimuth, 106 elevation angle, 107a, 107b, 108 nodes, 110 radar unit, 111 radar indicator, 112 target information holding unit, 114 target information confirmation unit , 123 latitude, 124 longitude, 137 CPU, 138 bus, 139 ROM, 140 RAM, 141 CRT display device, 142 K / B, 143 mouse, 144 communication board, 145 FDD, 146 magnetic disk device, 147 OS, 148 window system 149 program group, 150 files Le group, 186 CDD, 187 Printer device, 188 Scanner device, 200 satellites, 201 quasi-zenith satellite, 202 GPS satellite, 203 positioning signal, 310 fax, 320 telephone.

Claims (8)

In a wireless communication device including a route design unit that constructs a network between itself and another wireless communication device using the position information of the other wireless communication device and the position information of the self,
The position information of the other wireless communication device is provided with a radar unit that receives a reflected wave of a radio wave emitted by emitting a radio wave, calculates the received reflected wave, and outputs it to the path design unit. A wireless communication device. In a wireless communication device including a route design unit that constructs a network between itself and another wireless communication device using the position information of the other wireless communication device and the position information of the self,
The route design unit constructs the network using position information based on the first coordinate system,
The wireless communication device is
The reflected wave of the emitted radio wave is received and the position information of the other wireless communication device is calculated from the received reflected wave based on a second coordinate system different from the first coordinate system. And a radar unit that outputs to the route design unit,
The position information based on the second coordinate system output from the radar unit is input, the input position information based on the second coordinate system is converted into the position information based on the first coordinate system, and the route design is performed. A wireless communication apparatus comprising: a data conversion unit for outputting to the unit. In a wireless communication device including a route design unit that constructs a network between itself and another wireless communication device using the position information of the other wireless communication device and the position information of the self,
The route design unit constructs the network using position information based on the first coordinate system,
The wireless communication device is
The reflected wave of the emitted radio wave is received and the position information of the other wireless communication device is calculated from the received reflected wave based on the second coordinate system different from the first coordinate system. And a radar unit that outputs to the route design unit,
Other position information acquisition unit for inputting position information of the other wireless communication device based on a third coordinate system different from the first coordinate system and the second coordinate system transmitted by the other wireless communication device When,
The position information based on the second coordinate system output from the radar unit is input, the position information based on the input second coordinate system is converted into the position information based on the second coordinate system, and the other position is converted. The position information of another wireless communication device based on the third coordinate system is input from the information acquisition unit, and the input position information based on the third coordinate system is converted into position information based on the first coordinate system. And a data conversion unit for outputting to the route design unit.   4. The wireless communication apparatus according to claim 2, wherein the first coordinate system is an orthogonal coordinate system.   4. The wireless communication apparatus according to claim 2, wherein the second coordinate system is a polar coordinate system.   4. The wireless communication apparatus according to claim 3, wherein the third coordinate system includes latitude information and longitude information to indicate a position of the other wireless communication apparatus.   The wireless communication apparatus according to claim 1, wherein the network constructed by the route design unit is an ad hoc network. A first wireless communication device and a second wireless communication device, the first wireless communication device using the first position information of the first wireless communication device and the second wireless communication device; In a communication system for building a network with a second wireless communication device,
The first wireless communication device receives a reflected wave that is emitted from a radio wave and reflected by the second wireless communication device, and calculates a second position information from the received reflected wave;
A local position information acquisition unit that receives the positioning signal and calculates the first position information;
The second position information calculated by the radar unit and the first position information calculated by the own position information acquisition unit are input, and an ad hoc network is connected between the first and second wireless communication devices. A communication system comprising a path design unit to be constructed.

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