WO2019031375A1

WO2019031375A1 - Wireless device, transfer method, and program

Info

Publication number: WO2019031375A1
Application number: PCT/JP2018/028983
Authority: WO
Inventors: 真理中西; 陽介浮田
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2017-08-07
Filing date: 2018-08-02
Publication date: 2019-02-14
Also published as: JP2019033340A; JP6948618B2

Abstract

When the transfer of a packet signal starts from this wireless device 10, a setting unit 42 sets information relating to transfer by other wireless devices 10. A transmission unit 50 transmits the packet signal including the information set by the setting unit 42. The information set by the setting unit 42 indicates that another wireless device 10 located within a transfer range defined on the basis of the positional information of this wireless device 10 and the positional information of another wireless device 10 serving as the destination of the packet signal is caused to transfer the packet signal, and another wireless device 10 outside the transfer range is caused not to transfer the packet signal.

Description

Wireless device, transfer method, program

The present disclosure relates to communication technology, and more particularly, to a wireless device, a transfer method, and a program for transferring a packet signal by a flooding method.

In a multi-hop communication system constituted by a plurality of wireless devices, packet signals transmitted from one wireless device are transferred by another wireless device and received by a destination wireless device. The communication path of the multi-hop communication system is, for example, formed in a mesh shape in which a plurality of wireless devices are connected in a mesh. When transmitting a packet signal, the wireless device serving as the starting point of packet signal transfer sets an upper limit value of the number of times of relay transmission as the relay count value. When relay transmitting a packet signal, the other wireless device sets a value obtained by subtracting 1 from the relay count value as a new relay count value (for example, see Patent Document 1).

JP, 2016-012867, A

By setting the upper limit value of the number of times of relay transmission, repetition of transfer is suppressed and an increase in traffic is suppressed. However, since transmission is performed omnidirectionally from the wireless device, congestion also occurs in the direction opposite to the destination direction. It is preferable to suppress the occurrence of useless transfer that is obviously not relevant.

The present disclosure has been made in view of such circumstances, and an object thereof is to provide a technique for suppressing the occurrence of useless transfer of a packet signal.

In order to solve the above problems, a wireless device according to an aspect of the present disclosure is a wireless device included in a mesh network that transfers packet signals by a flooding method, and the wireless device is a starting point of transfer of packet signals. And a setting unit configured to set information related to transfer by another wireless device, and a transmitting unit configured to transmit a packet signal including the information set in the setting unit. In the information set in the setting unit, the packet signal is transmitted to another wireless device located within the transfer range determined based on the position information of the present wireless device and the position information of the other wireless device serving as the destination of the packet signal. It is shown to cause the packet signal to be forwarded and to cause other wireless devices out of the forwarding range to forward the packet signal.

Another aspect of the present disclosure is also a wireless device. This device is a wireless device included in a mesh network that transfers packet signals by the flooding method, and a receiver configured to receive packet signals and a setting unit configured to configure whether to transmit packet signals received by the receiver. And a transmission unit that transmits a packet signal when the setting unit sets the transfer. The setting unit is configured to position the wireless device within a transfer range determined based on position information of another wireless device serving as a starting point of packet signal transfer and position information of another wireless device serving as a packet signal destination. If so, transfer is set, and if the wireless device is located outside the transfer range, non-transfer is set.

Yet another aspect of the present disclosure is a transfer method. This method is a method of transferring packet signals in a mesh network that transfers packet signals in a flooding method, including position information of a wireless device serving as a starting point of packet signal transfer and position information of a wireless device serving as a packet signal destination. And a wireless device located within the transfer range defined based on the step of transferring the packet signal, and a wireless device located outside the transfer range not transferring the packet signal.

It is to be noted that any combination of the above-described components, and one obtained by converting the expression of the present disclosure among methods, apparatuses, systems, recording media, computer programs, and the like are also effective as aspects of the present disclosure.

According to the present disclosure, the occurrence of useless transfer of packet signals can be suppressed.

FIG. 1 is a diagram showing a configuration of a wireless communication system according to a first embodiment. FIG. 7 is a diagram showing an outline of transfer by the wireless communication system according to the first embodiment. It is a figure which shows the structure of the radio | wireless apparatus of FIG. 1 and FIG. It is a figure which shows the data structure of the database memorize | stored in the memory | storage part of FIG. 5 (a) to 5 (c) are diagrams showing an outline of the operation in the setting unit of FIG. FIG. 3 illustrates the format of a packet signal used in the wireless communication system of FIGS. 1 and 2; 7 (a) and 7 (b) are flowcharts showing communication procedures by the wireless device of FIG. FIG. 8 is a diagram showing the format of a packet signal used in the wireless communication system according to the second embodiment. 7 is a flowchart showing a communication procedure by the wireless device according to the second embodiment.

Example 1
Before specifically describing the present disclosure, an outline will be given. Example 1 relates to a wireless communication system of a mesh network configured by a plurality of wireless devices. Each wireless device is mounted on a control device and a plurality of controlled devices in a lighting system controlled by wireless communication. In the illumination system, when the communication distance from the control device to the controlled device is equal to or more than a predetermined amount, the packet signal is transmitted by multi-hop communication by the wireless device mounted on the controlled device disposed therebetween. In the mesh network, when multi-hop communication is performed by the flooding method, there is a problem that traffic is easily congested in the network.

In order to prevent this, the packet signal includes a TTL (Time To Live) value indicating the number of transferable times. The wireless device that has received the packet signal reduces the TTL value by “1” and transfers the packet signal when the TTL value is “1” or more, but does not transfer the packet signal when the TTL value is “0”. Execute the transfer process. Here, when the wireless device serving as the starting point of packet signal transfer sets a constant value for the TTL value, the maximum value in the network is set. Therefore, even when the packet signal has reached the destination wireless device, the transfer of the packet signal may continue and traffic may be generated more than necessary.

In order to cope with this, in the wireless communication system according to the present embodiment, the wireless device serving as the starting point of transfer (hereinafter referred to as “starting wireless device”) and the wireless device serving as the destination of transfer (hereinafter referred to as “destination wireless device” The combination of (1) includes transmitting and non-transmitting packets in one wireless device. For example, in a wireless communication system, a range to which a packet signal should be transferred (hereinafter referred to as a “transfer range”) is formed by the position of the source wireless device and the position of the destination wireless device. Wireless devices included in the transfer range transfer packet signals, and wireless devices not included in the transfer range do not transfer packet signals.

FIG. 1 shows the configuration of a wireless communication system 100. The wireless communication system 100 includes first to twelfth wireless devices 10a to 10l collectively referred to as wireless devices 10. The number of wireless devices 10 is not limited to "12". When the wireless communication system 100 is used for a lighting system, one of the plurality of wireless devices 10 is mounted on the control device, and the remaining wireless devices 10 are mounted on the controlled device. The control device and at least a part of the controlled device are fixed to a ceiling or the like. The plurality of wireless devices 10 form a mesh network and execute multi-hop communication by the flooding method. Here, (1) transmission of packet signal, (2) reception of packet signal, and (3) transfer of packet signal will be described in this order.

(1) Transmission of Packet Signal When any data to be transmitted is generated, one of the wireless devices 10 generates a packet signal including the data. The wireless device 10 that generates a packet signal corresponds to the above-described source wireless device, and the wireless device 10 that is the destination of the packet signal corresponds to the above-described destination wireless device. The packet signal includes an ID (Identification) (hereinafter referred to as “starting point ID”) for identifying the wireless device 10 that is the starting point of transfer of the packet signal and the wireless device 10 that is the destination of the packet signal. ID (hereinafter referred to as "destination ID") is included. The originating wireless device transmits a packet signal. Packet signals are forwarded by the flooding method in the mesh network. Here, the packet signal includes a TTL value which is a value indicating the number of times of transfer. When the destination ID included in the packet signal is different from the ID of the wireless device 10, the wireless device 10 receiving the packet signal transfers the packet signal if the TTL value is “1” or more, and the TTL value is “0”. If "", the packet signal is not transferred. The wireless device 10 reduces the TTL value by “1” at the time of transfer.

(2) Reception of Packet Signal The wireless device 10 that has received the packet signal executes reception processing on the packet signal when the destination ID included in the packet signal is the same as the ID of the wireless device 10 itself. Get the data contained in the packet signal. The wireless device 10 is the above-described destination wireless device, and the control device or the controlled device on which the destination wireless device is mounted may execute processing according to data.

(3) Transfer of Packet Signal As described above, in transfer only by subtracting the TTL value, useless transfer which does not go to the destination direction also occurs. Here, FIG. 2 is used to describe the process of the wireless communication system 100 for suppressing the occurrence of such useless transfer. FIG. 2 shows an overview of transfer by the wireless communication system 100. The wireless communication system 100 includes a plurality of wireless devices 10 as in FIG.

Here, it is assumed that the eighth wireless device 10 h is a starting wireless device and the seventeenth wireless device 10 q is a destination wireless device. Also shown is an origin-destination line 70 which is a straight line from the origin wireless device to the destination wireless device. Furthermore, a transfer range 72 is formed in which the origin-destination line 70 is a diagonal and the origin wireless device and the destination wireless device are disposed at the corners of the diagonal. The transfer range 72 has a rectangular shape. In the wireless communication system 100, the wireless device 10 included in the transfer range 72 transfers a packet signal, and the wireless device 10 not included in the transfer range 72 does not transfer the packet signal. The wireless devices 10 included in the transfer range 72 in FIG. 2 are the ninth wireless device 10i, the tenth wireless device 10j, the eleventh wireless device 10k, the fourteenth wireless device 10n, the fifteenth wireless device 10o, and the sixteenth wireless device 10p. is there. The eighth wireless device 10 h and the seventeenth wireless device 10 q are the source wireless device and the destination wireless device, so they are excluded from the wireless device 10 that executes the transfer.

Each wireless device 10 stores the position information of all the wireless devices 10 in advance, and the origin wireless device forms a transfer range 72 from the position information of the own wireless device and the position information of the destination wireless device, and the transfer range 72 The wireless device 10 included in The origin wireless device also stores transfer range information including an ID for identifying the identified wireless device 10 in the packet signal. When the transfer range information stored in the packet signal includes the ID of the own wireless device 10, the wireless device 10 other than the originating wireless device transfers the packet signal, and the ID of the own wireless device 10 is included. If not, do not transmit packet signal.

FIG. 3 shows the configuration of the wireless device 10. The wireless device 10 includes a communication unit 20, a processing unit 22, a control unit 24, and a storage unit 26. The communication unit 20 includes a transmission unit 50 and a reception unit 52. The processing unit 22 includes a packet signal generation unit 30, a packet signal processing unit 32, and a transfer processing unit 34. The control unit 24 includes an acquisition unit 40 and a setting unit. Including 42. Here too, (1) transmission of packet signal, (2) reception of packet signal, and (3) transfer of packet signal will be described in this order.

(1) Transmission of Packet Signal When the wireless device 10 is a starting point wireless device, the packet signal generation unit 30 of the wireless device 10 generates a packet signal. At this time, the packet signal generation unit 30 requests the control unit 24 to generate transfer range information while notifying the ID of the destination wireless device. Prior to the description of generation of transfer range information, the database stored in the storage unit 26 will be described. FIG. 4 shows the data structure of the database stored in the storage unit 26. As shown in FIG. As shown, coordinates for each wireless device 10 are shown. Here, the coordinates are indicated by the x axis and the y axis as shown in FIG. 2, but may be indicated by the latitude and the longitude. Return to FIG.

The acquisition unit 40 acquires coordinates of the destination wireless device as position information by referring to the storage unit 26 based on the ID of the destination wireless device notified from the packet signal generation unit 30. The acquisition unit 40 also acquires position information of the origin wireless device. This corresponds to the position information of the wireless device 10. The acquisition unit 40 outputs the position information of the destination wireless device and the position information of the origin wireless device to the setting unit 42.

As illustrated in FIG. 2, the setting unit 42 forms a transfer range 72 in which position information of the origin wireless device and position information of the destination wireless device are arranged diagonally. The transfer range 72 has a rectangular shape in which position information of the origin wireless device and position information of the destination wireless device are arranged diagonally. Further, the setting unit 42 extracts the wireless device 10 whose position information is included in the transfer range 72 by referring to the storage unit 26 based on the transfer range 72. Multiple wireless devices 10 may be extracted. The setting unit 42 generates transfer range information by collecting the extracted IDs. The transfer range information is information on transfer by the other wireless device 10. As described above, this can be said to be information for causing the wireless device 10 located within the transfer range 72 to transfer the packet signal and causing the wireless device 10 outside the transfer range 72 to not transfer the packet signal.

The shape of the transfer range 72 is not limited to the rectangular shape as shown in FIG. Here, another example will be described using FIGS. 5 (a)-(c). 5 (a) to 5 (c) show an outline of the operation in the setting unit 42. FIG. The transfer range 72 in FIG. 5A has a circular shape having a diameter of an origin-destination line 70 connecting position information of the origin wireless device 74 and the destination wireless device 76 on a plane coordinate. 5B is a polyhedron in which the origin-destination lines 70 connecting the position information of the origin wireless device 74 and the position information of the destination wireless device 76 are arranged diagonally on a three-dimensional coordinate. It has a shape. The polyhedron is, for example, a cuboid or a cube. Further, the transfer range 72 in FIG. 5C has a spherical shape having a diameter of an origin-destination line 70 connecting position information of the origin wireless device 74 and position information of the destination wireless device 76 on a three-dimensional coordinate. Return to FIG.

The setting unit 42 outputs the generated transfer range information to the packet signal generation unit 30. FIG. 6 shows the format of a packet signal used in the wireless communication system 100. The packet signal includes the start point ID, the destination ID, the TTL value, the transfer range information, and the data to be transmitted, which have already been described. Return to FIG. The packet signal generator 30 outputs the packet signal to the transmitter 50. The transmitting unit 50 transmits the packet signal received from the packet signal generating unit 30. The transmission unit 50 transmits a packet signal by the flooding method. A known technique may be used for the communication unit 20, and thus the description thereof is omitted here.

(2) Reception of Packet Signal The receiving unit 52 in the wireless device 10 other than the origin wireless device receives a packet signal. The receiving unit 52 outputs the packet signal to the processing unit 22. The packet signal processing unit 32 extracts the destination ID included in the packet signal. When the extracted destination ID matches the ID of the own radio apparatus 10, the packet signal processing unit 32 processes the data included in the packet signal. Although the process includes decoding and the like, the description is omitted here. The packet signal processing unit 32 may output the processing result to a control device or a controlled device in which the wireless device 10 is mounted.

(3) Transfer of Packet Signal The receiving unit 52 in the wireless device 10 other than the origin wireless device receives a packet signal. The receiving unit 52 outputs the packet signal to the processing unit 22. The transfer processing unit 34 extracts the destination ID included in the packet signal. If the extracted destination ID does not match the ID of the own radio apparatus 10, the transfer processing unit 34 extracts transfer range information. If the extracted transfer range information does not include the ID of the own radio apparatus 10, the transfer processing unit 34 determines the end of the transfer. When the extracted transfer range information includes the ID of the own radio apparatus 10, the transfer processing unit 34 extracts the TTL value from the packet signal. When the TTL value is “0”, the transfer processing unit 34 determines the end of the transfer. On the other hand, when the TTL value is “1” or more, the transfer processing unit 34 determines transfer. At this time, the transfer processing unit 34 includes the TTL value obtained by subtracting “1” from the TTL value in the packet signal. The transfer processing unit 34 outputs the packet signal to the transmission unit 50, and the transmission unit 50 transmits the packet signal.

The subject matter of the apparatus, system or method in the present disclosure comprises a computer. The computer executes the program to implement the functions of the apparatus, system, or method in the present disclosure. The computer includes, as a main hardware configuration, a processor that operates according to a program. The processor may be of any type as long as the function can be realized by executing a program. The processor is configured of one or more electronic circuits including a semiconductor integrated circuit (IC) or an LSI (Large Scale Integration). The plurality of electronic circuits may be integrated on one chip or may be provided on a plurality of chips. The plurality of chips may be integrated into one device or may be provided to a plurality of devices. The program is recorded in a non-transitory recording medium such as a computer readable ROM, an optical disc, a hard disk drive and the like. The program may be stored in advance in a recording medium, or may be supplied to the recording medium via a wide area communication network including the Internet and the like.

The operation of the wireless communication system 100 having the above configuration will be described. 7 (a) and 7 (b) are flowcharts showing the communication procedure by the wireless device 10. FIG. FIG. 7A shows processing in the origin wireless device. The setting unit 42 forms a transfer range 72 (S10). The setting unit 42 selects the wireless device 10 included in the transfer range 72 (S12), and generates transfer range information (S14). The transmitting unit 50 transmits a packet signal including transfer range information (S16).

FIG.7 (b) shows the process of radio | wireless apparatuses 10 other than an origin radio | wireless apparatus. The receiving unit 52 receives a packet signal (S20). When the destination ID is the own radio apparatus 10 (Y in S22), the packet signal processing unit 32 executes a reception process (S24). When the destination ID is not the own radio apparatus 10 (N in S22) and is included in the transfer range information (Y in S26), the transfer processing unit 34 executes the transfer process (S28). When the destination ID is not included in the transfer range information (N in S26), the transfer processing unit 34 executes the discarding process (S30).

According to the present embodiment, the packet signal is transferred to the wireless device 10 located within the transfer range 72 determined based on the position information of the origin wireless device and the position information of the destination wireless device, and Since the packet signal is not transferred to the wireless device 10, the occurrence of useless transfer can be suppressed. In addition, since the occurrence of useless transfer of packet signals is suppressed, it is possible to suppress an increase in traffic volume. Further, since the start point wireless device transmits the transfer range information including the ID of the wireless device 10 included in the transfer range 72, an increase in the amount of processing in the wireless device 10 other than the start wireless device can be suppressed. Further, since the shape of the transfer range 72 is any one of a rectangular shape, a circular shape, a polyhedral shape, and a spherical shape, the degree of freedom of the configuration can be increased.

In addition, since the transfer range 72 is set so as not to impair the redundancy of the flooding, the packet signal can be made to reach the destination steadily with directivity. In addition, since the packet signal is directed to reach the destination steadily, communication reliability can be improved. In addition, since the packet signal is directed to reach the destination steadily, the traffic volume of the entire network can be reduced. In addition, since the traffic volume of the entire network is reduced, power consumption can be reduced. In addition, when applied to a lighting system, since the packet signal only performs the minimum necessary transfer until the destination is reached, a low-consumption wireless communication system with targeted transfer can be realized.

The outline of one aspect of the present disclosure is as follows. The wireless device 10 according to an aspect of the present disclosure is a wireless device 10 included in a mesh network that transfers packet signals in a flooding method, and when the wireless device 10 is a starting point of the transfer of packet signals, The setting unit 42 sets information related to transfer by the apparatus 10, and the transmission unit 50 transmits a packet signal including the information set in the setting unit 42. The information set in the setting unit 42 includes other wireless devices located within the transfer range 72 determined based on the location information of the wireless device 10 and the location information of the other wireless device 10 to which the packet signal is to be sent. It is shown to cause the packet signal to be transferred to 10 and to cause the other wireless device 10 out of the transfer range 72 to not transfer the packet signal.

The transfer range 72 set in the setting unit 42 may have a rectangular shape in which position information of the start point and position information of the destination are arranged diagonally.

The transfer range 72 set in the setting unit 42 may have a circular shape whose diameter is a straight line connecting the position information of the start point and the position information of the destination.

The transfer range 72 set in the setting unit 42 may have a polyhedral shape in which the position information of the start point and the position information of the destination are arranged diagonally.

The transfer range 72 set in the setting unit 42 may have a spherical shape whose diameter is a straight line connecting the position information of the start point and the position information of the destination.

Yet another aspect of the present disclosure is a transfer method. This method is a transfer method of a packet signal in a mesh network that transfers a packet signal by a flooding method, and includes position information of the wireless device 10 as a starting point of transfer of the packet signal and a destination of the wireless device 10 as a destination of the packet signal. A step in which the wireless device 10 located in the transfer range 72 determined based on the position information transfers a packet signal, and a step in which the wireless device 10 located outside the transfer range 72 does not transfer the packet signal Prepare.

(Example 2)
Next, Example 2 will be described. The second embodiment, like the first embodiment, relates to a wireless communication system of a mesh network configured by a plurality of wireless devices. Also in the second embodiment, in order to suppress the occurrence of useless transfer of the packet signal, the wireless device included in the transfer range transfers the packet signal, and the wireless device not included in the transfer range does not transfer the packet signal. In the first embodiment, the originating wireless device generates information on wireless devices included in the transfer range as transfer range information, and the other wireless devices transmit packet signals only when the own wireless device is included in the transfer range. I am forwarding. On the other hand, in the second embodiment, the wireless devices other than the starting wireless device form the transfer range by themselves based on the starting point ID and the destination ID, and transfer the packet signal only when the own wireless device is included in the transfer range. Do. The wireless communication system 100 according to the second embodiment is of the same type as in FIGS. 1 and 2, and the wireless device 10 is of the same type as in FIG. Here, we will focus on the differences from the previous ones.

The configuration of the wireless device 10 according to the second embodiment will be described based on FIG. (2) The reception of the packet signal is the same as that of the first embodiment, and therefore, (1) transmission of the packet signal and (3) transfer of the packet signal will be described in this order.

(1) Transmission of Packet Signal When the wireless device 10 is a starting point wireless device, the packet signal generation unit 30 of the wireless device 10 generates a packet signal. FIG. 8 shows the format of a packet signal used in the wireless communication system 100. The packet signal includes the source ID, the destination ID, the TTL value, and the data to be transmitted, which have already been described. That is, unlike the first embodiment, the packet signal does not include transfer range information. Return to FIG. The packet signal generator 30 outputs the packet signal to the transmitter 50. The transmitting unit 50 transmits the packet signal received from the packet signal generating unit 30.

(3) Transfer of Packet Signal The receiving unit 52 in the wireless device 10 other than the origin wireless device receives a packet signal. The receiving unit 52 outputs the packet signal to the processing unit 22. The transfer processing unit 34 extracts the destination ID included in the packet signal. The transfer processing unit 34 outputs the start point ID and the destination ID to the control unit 24 when the extracted destination ID does not match the ID of the own wireless device 10. The acquisition unit 40 acquires coordinates of the origin wireless device as position information by referring to the storage unit 26 based on the origin ID notified from the transfer processing unit 34. Further, the acquisition unit 40 acquires coordinates of the destination wireless device as position information by referring to the storage unit 26 based on the destination ID notified from the transfer processing unit 34. The acquisition unit 40 outputs the position information of the destination wireless device and the position information of the origin wireless device to the setting unit 42.

As in the first embodiment, the setting unit 42 forms a transfer range 72 in which position information of the origin wireless device and position information of the destination wireless device are arranged diagonally. The transfer range 72 may be rectangular as shown in FIG. 2, or may be circular, polyhedral, or spherical as shown in FIGS. 4 (a)-(b). The setting unit 42 sets the transfer when the transfer range 72 includes the position information of the own wireless device 10, and sets the non-transfer when the transfer range 72 does not include the position information of the own wireless device 10 Do. The setting unit 42 outputs the setting content to the transfer processing unit 34.

When transfer is set in the setting unit 42, the transfer processing unit 34 extracts the TTL value from the packet signal. When the TTL value is “0”, the transfer processing unit 34 determines the end of the transfer. On the other hand, when the TTL value is “1” or more, the transfer processing unit 34 determines transfer. At this time, the transfer processing unit 34 includes the TTL value obtained by subtracting “1” from the TTL value in the packet signal. The transfer processing unit 34 outputs the packet signal to the transmission unit 50, and the transmission unit 50 transmits the packet signal. On the other hand, when the non-transfer is set in the setting unit 42, the transfer processing unit 34 determines the end of the transfer.

The operation of the wireless communication system 100 having the above configuration will be described. FIG. 9 is a flowchart showing a communication procedure by the wireless device 10. The receiving unit 52 receives the packet signal (S50). When the destination ID is the own radio apparatus 10 (Y in S52), the packet signal processing unit 32 executes a reception process (S54). When the destination ID is not the own radio apparatus 10 (N in S52), the setting unit 42 generates the transfer range 72 (S56). When the position information of the own radio apparatus 10 is included in the transfer range 72 (Y in S58), the transfer processing unit 34 executes the transfer process (S60). When the position information of the own wireless device 10 is not included in the transfer range 72 (N in S58), the transfer processing unit 34 executes the discarding process (S62).

According to the present embodiment, each wireless device 10 executes to transfer the packet signal to the wireless device 10 located within the transfer range 72 and to cause the wireless device 10 outside the transfer range 72 to transfer no packet signal. Therefore, the amount of processing at the originating wireless device can be reduced. In addition, since the start point ID and the destination ID are included in the packet signal, the amount of information included in the packet signal can be reduced.

The outline of one aspect of the present disclosure is as follows. Another aspect of the present disclosure is also the wireless device 10. This device is the wireless device 10 included in the mesh network that transfers packet signals by the flooding method, and sets whether to receive the packet signals and to receive the packet signals received by the receiver 52. And a transmission unit 50 for transmitting a packet signal when the setting unit 42 sets transfer. The setting unit 42 sets the transfer range 72 determined based on the position information of the other wireless device 10 as the starting point of the transfer of the packet signal and the position information of the other wireless device 10 as the destination of the packet signal. If the wireless device 10 is located, transfer is set, and if the wireless device 10 is located outside the transfer range 72, non-transfer is set.

The present disclosure has been described above based on the examples. It is understood by those skilled in the art that this embodiment is an exemplification, and that various modifications can be made to their respective components or combinations of processing processes, and such modifications are also within the scope of the present disclosure. .

In the present embodiment, the correspondence relationship between the ID of the wireless device 10 and the coordinates is stored in the storage unit 26. However, the present invention is not limited to this. For example, identification information of the wireless device 10 may be given such that position information of the wireless device 10 is included. According to this modification, storage of the correspondence in the storage unit 26 can be omitted.

DESCRIPTION OF REFERENCE NUMERALS 10 radio apparatus 20 communication unit 22 processing unit 24 control unit 26 storage unit 30 packet signal generation unit 32 packet signal processing unit 34 transfer processing unit 40 acquisition unit 42 setting unit 50 transmission unit 52 Receiver, 100 wireless communication system.

Claims

A wireless device included in a mesh network that transfers packet signals by a flooding method,
A setting unit configured to set information related to transfer by another wireless device when the wireless device is a starting point of transfer of a packet signal;
And a transmitter configured to transmit a packet signal including the information set in the setting unit.
The information set in the setting unit includes the position information of the present radio apparatus and the other radio apparatuses located within the transfer range determined based on the position information of the other radio apparatus serving as the destination of the packet signal. A wireless device, characterized in that it is indicated to transfer a packet signal and to cause another wireless device outside the transfer range to not transfer the packet signal.
A wireless device included in a mesh network that transfers packet signals by a flooding method,
A receiver for receiving a packet signal;
A setting unit configured to set whether to transfer the packet signal received by the receiving unit;
And a transmitter configured to transmit the packet signal when the setting unit sets transfer.
The setting unit is configured to transmit the wireless signal in a transfer range defined based on position information of another wireless device as a starting point of transfer of the packet signal and position information of another wireless device as a destination of the packet signal. 2. A wireless device comprising: setting the transfer if the device is located; and setting the non-transfer if the wireless device is located outside the transfer range.
The wireless device according to claim 1 or 2, wherein the transfer range set in the setting unit has a rectangular shape in which position information of a starting point and position information of a destination are arranged diagonally.
The wireless device according to claim 1 or 2, wherein the transfer range set in the setting unit has a circular shape whose diameter is a straight line connecting position information of the start point and position information of the destination.
The wireless device according to claim 1 or 2, wherein the transfer range set in the setting unit has a polyhedron shape in which position information of a starting point and position information of a destination are arranged diagonally.
The wireless device according to claim 1 or 2, wherein the transfer range set in the setting unit has a spherical shape whose diameter is a straight line connecting the position information of the start point and the position information of the destination.
A packet signal transfer method in a mesh network for transferring a packet signal by a flooding method, comprising:
A step of transferring the packet signal by a wireless device located within a transfer range defined based on position information of the wireless device serving as a starting point of transfer of the packet signal and position information of the wireless device serving as the destination of the packet signal; When,
The wireless device located outside the transfer range does not transfer the packet signal;
A transfer method comprising:
A program in a wireless device included in a mesh network that transfers packet signals in a flooding method,
Setting information related to transfer by another wireless device when the wireless device is a starting point of transfer of a packet signal;
Sending a packet signal containing the set information.
In the information set in the setting step, the position information of the present radio apparatus and the position information of the other radio apparatus to which the packet signal is to be sent are other radio apparatuses located within the transfer range defined based on the position information. A program for causing a computer to execute transfer of the packet signal and causing another wireless device outside the transfer range to indicate that the packet signal is not transferred.
A program in a wireless device included in a mesh network that transfers packet signals in a flooding method,
Receiving a packet signal;
Setting whether or not to transfer the received packet signal;
Sending the packet signal when forwarding is set,
The setting step is performed in a transfer range determined based on position information of another wireless device as a starting point of transfer of the packet signal and position information of another wireless device as a destination of the packet signal. A program for causing a computer to set transfer when a wireless device is located and to set non-transfer when the wireless device is located outside the transfer range.
A program in a mesh network that transfers packet signals by flooding method,
A step of transferring the packet signal by a wireless device located within a transfer range defined based on position information of the wireless device serving as a starting point of transfer of the packet signal and position information of the wireless device serving as the destination of the packet signal; When,
A program for causing a computer to execute the steps of: a wireless device located out of the transfer range not transferring the packet signal.