TW201701241A - Wireless device, relay device, communication system, and identifier allocation method - Google Patents

Abstract

A master device 1 according to the present invention is provided with: a transmission-reception unit 12 that receives an identifier distribution request requesting distribution of an identifier; an identifier calculation unit 14 that determines, on the basis of the identifier distribution request, whether a wireless device which was the sender of the identifier distribution request is a first wireless device which is the sender of data or a second wireless device which is a relay device, and that, in a case in which it is determined that the wireless device which was the sender of the identifier distribution request is the first wireless device, allocates the smallest identifier among allocable identifiers other than already allocated identifiers to the wireless device which was the sender of the identifier distribution request, and, in a case in which it is determined that the wireless device which was the sender of the identifier distribution request is the second wireless device, allocates the largest identifier among the allocable identifiers other than the already allocated identifiers to the wireless device which was the sender of the identifier distribution request; and a communication control unit 13 that generates a response containing the identifier allocated by the identifier calculation unit 14, and transmits the generated response via the transmission-reception unit 12 to the wireless device which was the sender of the identifier distribution request.

Description

Wireless machine, relay machine, communication system, and identifier assignment method

The present invention relates to a communication system for distributing identifiers to a wireless device, a wireless device of the communication system, and an identifier assignment method in response to a request from a wireless device.

In the wireless communication standard, although it is defined that the wireless device that performs communication is a wireless device that is a communication partner, the identifier is used, but in order to reduce the manufacturing cost or operating cost of the wireless device, or the manufacturing cost and operation. Cost, there will be no sign of the wireless machine before the application, that is, the wireless machine does not have the identifier before the application. In this case, although the identifier must be set in the wireless unit during the operation phase, the setting of the identifier for each wireless device requires the operation cost, that is, the human resource and time. In addition, there is a case where the identifier of the hand operation cannot be set according to the physical constraints of the wireless device or the like. To this end, there is a process of automatically distributing the identifier from a certain machine to the wireless machine. As a method of distributing the identifier for communication, there is a method described in Non-Patent Document 1. In Non-Patent Document 1, each wireless device has a MAC (Media Access Control) layer flag of a communication protocol lower than an IP (Internet Protocol) layer among communication protocols. Before the character is mentioned, the identifier distribution of the IP (Internet Protocol) layer in the protocol is implemented. For this reason, it is recorded in non-patent In the method of Document 1, if the identifier of the MAC layer does not exist, the distribution of the identifier for communication cannot be performed.

On the other hand, in the U-Bus air which promotes standardized communication specifications according to the telemetering promotion protocol, a method of distributing the identifiers to the wireless device in the operation phase is specified. U-Bus air is a communication specification used for multihop communication of 920 MHz band. In the U-Bus air, the number required for the identifier is obtained by the identifier for the wireless device use identifier issuance request, and the identifier is issued to the number issuing wireless device that issues the identifier. When the number issuing wireless machine receives the distribution request, it returns a response that the issued identifier is stored. The number acquisition wireless device that has received the response sets the identifier of the response received from the number acquisition wireless device to the local device, and then communicates using the set identifier. In the U-Bus air, by distributing the identifier as described above, the identifier distribution for communication can be performed even in a state where the identifier such as the identifier of the MAC layer does not exist.

Prior technical literature Non-patent literature

[Non-Patent Document 1] RFC2131 "Dynamic Host Configuration Protocol"

As described above, in Non-Patent Document 1, in the state where the identifier of the MAC layer does not exist, the distribution of the identifier for communication cannot be performed. Further, in the U-Bus air identifier distribution method, an industrial application is applied. When the processing is applied to a communication system, there are the following problems. In industrial applications, such as the application of collecting measurement data, the identifier of each machine is used in the application processing. In such a case, the identifier used in the application processing is directly used as an identifier used by the wireless device defined in the wireless communication standard, that is, a communication identifier.

In the industrial application processing, there are a plurality of sub-machines for one parent machine, and in response to the data capacity of the data transmitted by the sub-machine, there is a case where the parent machine determines the number of identifiers assigned to the sub-machine. For example, a predetermined data capacity is defined as one unit of the data capacity, and an identifier is assigned to the data capacity per unit. That is, when N is an integer of 1 or more, N identifiers are assigned to the slaves that transmit N units of data. In such a case, when the parent machine has, for example, a distribution of identifiers, that is, an identifier assignment request from the child machine, among the usable identifiers, the lowest one of the identifiers is sequentially allocated. For example, from the transmission of the data unit capacity of 1 unit, the sub-machine #1 has the requirement of the identifier assignment, the identifier of the lowest number is assigned to the slave #1, and then the slave unit 2 that transmits the data capacity of 2 units. When receiving the request for the assignment of the identifier, the two identifiers of the identifier of the second lowest number and the identifier of the third lowest number are assigned to the slave #2. Such an identifier assignment method is hereinafter referred to as an incremental allocation method.

Also, there is a communication system including a relay dedicated to the slave. The relay-dedicated child machine is appropriately referred to as a relay machine hereinafter. The communication identifier must also be assigned to the repeater. In the case where the parent machine assigns an identifier to the slave according to the above-described incremental allocation method, the identifier is also assigned to the relay according to the incremental allocation method. However, since the relay does not become the transmission source of the data, it is not possible to determine the number of the identifiers in accordance with the data capacity, and a predetermined number, for example, one flag. Assigned to the repeater.

Moreover, in the processing of industrial applications, the parent machine maintains a data map, which is a data format, which defines a data area of each identifier, and stores data received from the slave according to the data map. Information, that is, the collection of information. The data map is information showing the storage location of the data of each of the identifiers in the collection data. As described above, in the case where the relay is also assigned the identifier according to the incremental allocation method, the data area corresponding to the identifier assigned to the relay in the aggregate data is not used in the application processing. Therefore, there is a storage location of the invalid data area that is not used in the application processing in the collection data. For this reason, in the process of using the collected data, there is a possibility that an error that is meaningless, that is, the data of the invalid data area is recognized as meaningful data may occur. Further, when the collected data is copied and stored in the memory, the memory area is used based on the invalid data, and when the aggregated data is transmitted, there is a problem that the transfer capacity is used for the invalid data.

The present invention has been developed in view of the above, and it is possible to provide an invalid data in the aggregated data in the case where the identifier is assigned to the child machine and the aggregated data of the data area is set for each of the assigned identifiers. The purpose of the wireless machine is for the purpose.

In order to solve the above problems, a wireless device according to the present invention includes: a transmitting/receiving unit that receives an identifier distribution request of a required identifier distribution; and an allocation unit that determines a transmission source of the identifier distribution request according to the identifier distribution requirement The wireless device is the first wireless device that constitutes the transmission source of the data, or the second wireless device that is the relay device, and the wireless device that determines the transmission source of the identifier distribution. In the case of the first wireless device, the wireless device that excludes the smallest identifier of the assigned identifier from the assignable identifier to the transmission source of the identifier distribution request, and the wireless source of the transmission source that determines the identifier distribution requirement In the case of the second wireless device, the maximum identifier of the assigned identifier is excluded from the assignable identifier to the wireless device of the transmission source of the identifier distribution request. Further, the wireless device according to the present invention includes: the communication control unit generates a wireless device that stores a response in accordance with the identifier assigned by the allocating unit, and transmits the generated response to the transmission source of the identifier distribution through the transmitting/receiving unit. machine.

With regard to the wireless device of the present invention, it is possible to suppress the occurrence of invalid data in the data map when the identifier is assigned to the child machine and the data map for setting the data area for each of the assigned identifiers is generated.

1, 101‧‧‧ parent machine

2, 2-1~2-3, 2-(x-1), 2-x, 2-y, 102-1~102-3‧‧‧

3, 3-1~3-12, 103‧‧‧ relay machine

11, 21, 31‧‧‧ antenna

12, 22, 32‧‧‧Transmission/receiving department

13, 23, 33‧‧‧Communication Control Department

14‧‧‧Signal Calculation Unit

15, 24‧‧‧Application Processing Department

Fig. 1 is a view showing a configuration example of a communication system according to an embodiment of the present invention.

Fig. 2 is a view showing a configuration example of a parent machine.

Fig. 3 is a view showing an example of a data map.

Fig. 4 is a view showing a configuration example of a slave unit.

Fig. 5 is a view showing a configuration example of a relay machine.

Fig. 6 is a view showing a configuration example of a control circuit.

Fig. 7 is a flow chart (flowchart) showing an example of the processing procedure of the identifier distribution of the slave.

Fig. 8 is a view showing an example of a format of a marker distribution request.

Fig. 9 is a flow chart showing an example of a processing procedure relating to the distribution of the identifier of the relay.

FIG. 10 is a flowchart showing an example of a procedure of the marker calculation processing of the marker calculation unit of the parent machine.

Fig. 11 is a flow chart showing an example of a processing procedure for generating a response to the identifier distribution request by the communication control unit.

Fig. 12 is a view showing an example of a format of a response.

Fig. 13 is a view showing an example of the format of a data signal.

Fig. 14 is a flow chart showing an example of a processing procedure of an application processing unit of a child machine.

Fig. 15 is a flow chart showing an example of a processing procedure of an application processing unit of the parent machine.

Fig. 16 is a view showing an example of the number of occupations of the slave unit.

Fig. 17 is a sequence diagram showing an example of the process of distributing the identifiers.

Fig. 18 is a view showing an example of an identifier and a data map in which the identifiers of the slaves and the relays are distributed in accordance with the distribution requirements of the parent machine.

Fig. 19 is a view showing an example of a data map of a comparative example.

Fig. 20 is a view showing an example of the configuration of a communication system according to the embodiment.

Fig. 21 is a sequence diagram showing an example of the flag distribution processing in the case where the child machine transmits the identifier distribution request in the state shown in Fig. 20.

Fig. 22 is a view showing a configuration example of a communication system of the embodiment.

Fig. 23 is a sequence diagram showing an example of the flag distribution processing in the case where the relay device transmits the identifier distribution request in the state shown in Fig. 22;

Hereinafter, a wireless device, a relay, a communication system, and an identifier assignment method according to embodiments of the present invention will be described in detail based on the drawings. Further, the present invention is not limited by the embodiment.

Implementation form.

Fig. 1 is a view showing a configuration example of a communication system according to an embodiment of the present invention. As shown in FIG. 1, the communication system of this embodiment includes a parent machine 1, sub-machines 2-1 to 2-3, and a repeater 3. The parent machine 1 is a wireless communication device, that is, a wireless device, and the communication identifier used in the communication system of the present embodiment, that is, the identifier used by the wireless device defined by the wireless communication standard, is assigned to the slaves 2-1 to 2, respectively. -3 with repeater 3. The slaves 2-1 to 2-3 and the repeater 3 are wireless devices that are assigned to the communication identifier from the parent machine 1, that is, the wireless device. Further, as will be described later, the slaves 2-1 to 2-3 are slaves that perform application processing, and the repeater 3 is a slave that does not perform application processing. The relay 3 is a communication between the relay master 1 and the slave 2-2. In FIG. 1, although an example in which the relay unit 3 exists between the parent machine 1 and the child machine 2-2 is illustrated, the relay machine 3 may exist between the parent machine 1 and the child machine 2-1. The relay unit 3 may be present between the parent machine 1 and the slave unit 2-3. Hereinafter, in the case of the non-regional molecular machines 2-1 to 2-3, the child machine 2 is appropriately described. In FIG. 1, although the relay machine 3 is one machine and the child machines 2-1 to 2-3 are three, the number of the relay machine 3 and the child machine 2 is not limited to the example of FIG. For example, a plurality of relay machines 3 may exist between the parent machine 1 and the slave machine 2-2.

The parent machine 1 and the slaves 2-1 to 2-3 of the present embodiment perform application processing. This application processing is, for example, processing in which the parent machine 1 collects measurement data and the like from the slaves 2-1 to 2-3. The parent machine 1 collects the data transmitted from the slave machines 2-1 to 2-3, and generates Bring together information. The parent machine 1 maintains a data map showing the format of the collected data, and generates aggregated materials based on the data map. In the application process, the identifier is used to manage the data. In the data map, specify the data area for each marker. Further, in the present embodiment, the identifier used for the application processing is also used as the above-described communication identifier. When one child machine 2 uses a plurality of identifiers by application processing, one of the plurality of identifiers is used as a communication identifier.

Fig. 2 is a view showing a configuration example of the parent machine 1 of the embodiment. As shown in FIG. 2, the parent machine 1 includes an antenna 11, a transmission/reception unit 12, a communication control unit 13, an identifier calculation unit 14, and an application processing unit 15. The transmitting/receiving unit 12 receives the wireless signal through the antenna 11, converts the received wireless signal into a digital signal, and inputs it to the communication control unit 13. Further, the transmission/reception unit 12 converts the signal input from the communication control unit 13 into an analog signal and transmits it as a wireless signal through the antenna 11. For example, as will be described later, the transmission/reception unit 12 receives the identifier distribution request of the request identifier distribution from the slave unit 2 or the relay unit 3, and outputs it to the communication control unit 13, and transmits the pair generated by the communication control unit 13. The identifier distribution requires a response. That is, the transmission/reception unit 12 has a transmission unit and a reception unit, the transmission unit of the antenna 11 and the transmission/reception unit 12 is a transmitter, and the reception unit of the antenna 11 and the transmission/reception unit 12 is a receiver.

The communication control unit 13 performs communication protocol processing in accordance with the wireless communication standard. Specifically, for example, the communication control unit 13 generates a signal of a format of a wireless signal according to a wireless communication standard based on the transmitted data, that is, a frame signal, and then inputs it to the transmitting/receiving unit 12. Further, the communication control unit 13 analyzes the signal input from the transmission/reception unit 12, that is, the received signal, and determines the type of the received signal. When the type of the received signal is the identifier distribution request, The marker distribution request is notified to the marker calculation unit 14, and the indicator marker calculation unit 14 performs calculation of the marker of the transmission source required for the marker distribution. The transmission source of the identifier distribution request is a child machine 2 or a relay machine 3 as will be described later. Further, the communication control unit 13 generates a response to the identifier outputted from the identifier calculation unit 14, that is, a response to the identifier distribution request, and transmits it to the transmission of the marker distribution request through the transmission/reception unit 12 and the antenna 11. source.

Further, the communication control unit 13 transfers the data signal to the application processing unit 15 when the type of the received signal is the information signal, that is, the data signal of the stored data used for the application processing. Further, when the communication control unit 13 assigns the identifier to the slave 2 based on the identifier distribution request from the slave unit 2, the communication control unit 13 notifies the application processing unit of the assigned identifier and the number of occupations stored in the identifier distribution request. 15. Specifically, as will be described later, the communication control unit 13 determines the type of the received signal based on the information indicating the type of the data stored in the predetermined position among the received signals.

The application processing unit 15 collects the data signals transmitted from the respective slave units 2-1 to 2-3 input from the communication control unit 13, and generates aggregated data based on the data map. The application processing unit 15 updates the material map in accordance with the identifier and the number of occupations received from the communication control unit 13. The application processing unit 15 assigns an identifier to each occupancy number. That is, the parent machine 1 assigns an identifier to each of the received data. Specifically, when the number of identifiers received from the communication control unit 13 is L and the number of occupations is K, the application processing unit 15 adds a data region corresponding to K identifiers of L to L+K-1 to the material map. . Fig. 3 is a view showing an example of a data map. In the illustration of FIG. 3, an illustration using six identifiers of 1 to 6 is illustrated, that is, an identifier of 1 to 6 is assigned to the illustration of the slaves 2-1 to 2-3. For example, markers 1 and 2 Assigned to the slave 2-1, the identifiers 3 to 5 are assigned to the slave 2-2, and the marker 6 is assigned to the slave 2-3. In the data map shown in FIG. 3, a data area for storing the stored data corresponding to the identifier is pre-defined for each of the identifiers, and the data area is allocated in the data map in such a manner that the identifiers are continuous. In Fig. 3, the portion indicated by the rectangle as the data area is actually displayed to specify the data area based on the bit position or the like in the aggregated material. For example, in the case where 1 unit is 128 bits, the data map shown in FIG. 3 is marked by the data area of the 0th to 127th bits in the aggregated data, and the 128th to 255th bits in the aggregated data. The way the data area of the character is displayed, showing the data area assigned to each identifier.

The identifier calculation unit 14 calculates an identifier assigned to the slaves 2-1 to 2-3 in accordance with an instruction from the communication control unit 13, and outputs the calculated identifier to the communication control unit 13. Specifically, the identifier calculation unit 14 determines whether the transmission source of the identifier distribution request is the slave 2 or the relay 3 in accordance with the identifier distribution request, and in the case where the transmission source required for the marker distribution is the slave 2 Among the values usable as the identifier, the value of the lowest number after the value assigned to the identifier is excluded as the identifier of the slave 2 assigned to the transmission source of the identifier distribution, that is, the communication identifier. Further, among the values that can be used as the identifier, the value that excludes the lowest value that has been assigned as the identifier is the minimum value that is excluded from the value that has been assigned as the identifier among the values that can be used as the identifier. In the present embodiment, since the identifier is sequentially assigned from the lower number to the child machine 2, the value of the lowest number after excluding the value assigned as the identifier among the values usable as the identifier is already assigned to the child machine. The largest identifier of 2 is a larger one. In addition, in the application processing, the slave device 2 of the transmission source required for the identifier distribution is included The identifier of the communication identifier occupies the number of identifiers, so the maximum identifier assigned to the slave 2 is updated to the value obtained by adding the maximum identifier previously assigned to the slave 2 to the number of possessions.

Further, the number of occupations is a numerical value indicating the data capacity to be transmitted by each slave in the application processing, and the predetermined data capacity is set to 1 unit, and the data capacity to be transmitted by the display slave 2 in the application processing is The value of several units. The number of possessions can also be said to be the number of identifiers occupied by each slave 2. Each of the slaves 2 uses one of the identifiers occupied by the slave 2 as a communication identifier. Among them, the lowest number among the identifiers occupied by the child machine 2 is used as the identifier for communication. Further, when the transmission source requested by the identifier distribution is the relay unit 3, the identifier calculation unit 14 assigns the highest value of the value that can be used as the identifier as the highest value of the identifier. The identifier of the source of the transfer to the identifier distribution. Further, among the values that can be used as the identifier, the value that excludes the highest value that has been assigned as the identifier is the maximum value that is excluded from the value that has been assigned as the identifier among the values that can be used as the identifier. In the present embodiment, since the identifier is sequentially assigned from the highest number to the relay unit 3, the highest value of the value that can be used as the identifier is excluded from the value that can be used as the identifier. The smallest identifier of the successor 3 is a smaller identifier.

As described above, the parent machine 1 of the present embodiment changes the method of assigning the identifiers in accordance with the transmission source required for the identifier distribution to the slave 2 or the relay 3. By using the first allocation method sequentially assigned from the low number in the assignment of the identifiers to the slave unit 2, the second allocation method sequentially assigned from the upper number is used in the assignment of the identifier to the relay unit 3. The range of the identifier used by the handset 2 can be separated from the range of the identifier used by the relay 3. Again, contrary to the above, in the pair In the assignment of the identifier of the machine 2, the first allocation method that is sequentially assigned from the upper number is used, and the second allocation method that is sequentially assigned from the lower number is used for the assignment of the identifier to the relay unit 3. In this case, the data area of each identifier is sequentially assigned from the high number in the data map.

As described above, in the child machine 2 of the present embodiment, the identifiers are sequentially assigned from the low number, and the relay device 3 sequentially assigns the identifiers from the high numbers, and when the slaves 2 are allocated, It is possible to assign an identifier that has been assigned to the range outside the relay 3. In other words, the identifier calculation unit 14 is a slave device 2 that is a source of transmission of the data, which is a source of the data to be transmitted according to the identifier distribution request, and is a first wireless device or a relay device 3 In the case where the wireless device that determines the transmission source required for the marker distribution is the first wireless device, the second wireless device assigns the smallest identifier after the assigned identifier to the assignable identifier to the marker distribution. The wireless device of the required transmission source assigns the largest identifier after the assigned identifier is excluded to the second wireless device when the wireless device that determines the transmission source of the identifier distribution is the second wireless device. The distribution unit of the wireless device that transmits the source of the identifier. The communication control unit 13 generates a wireless device that stores a response based on the identifier assigned by the identifier calculation unit 14 and transmits the generated response to the transmission source of the identifier distribution through the transmission/reception unit 12.

Fig. 4 is a view showing a configuration example of the slave unit 2 of the embodiment. As shown in FIG. 4, the slave 2 includes an antenna 21, a transmission/reception unit 22, a communication control unit 23, and an application processing unit 24. The transmitting/receiving unit 22 receives the wireless signal through the antenna 21, and converts the received wireless signal into a digital signal input to the communication control unit 23. Further, the transmission/reception unit 22 receives the signal input from the communication control unit 23. It is converted into an analog signal and transmitted through the antenna 21 as a wireless signal. That is, the transmission/reception unit 22 has a transmission unit and a reception unit, the transmission unit of the antenna 21 and the transmission/reception unit 22 is a transmitter, and the reception unit of the antenna 21 and the transmission/reception unit 22 is a receiver.

The communication control unit 23 performs communication protocol processing in accordance with the wireless communication standard. Specifically, for example, the communication control unit 23 generates a signal of a wireless communication format according to the wireless communication standard, that is, a wireless frame signal, based on the transmitted data, and inputs it to the transmitting/receiving unit 22. When the local control unit 23 does not assign an identifier, the communication control unit 23 generates a flag distribution request to be transmitted to the parent machine 1. When the identifier distribution request is transmitted, the communication control unit 23 uses the dedicated identifier required for the predetermined flag distribution as the transmission source identifier. The communication control unit 23 determines whether or not the signal received via the antenna 21 and the transmission/reception unit 22 is sent to the local device. If it is not the signal transmitted to the local device, the signal is transmitted via the antenna 21 and the transmission/reception unit 22. . That is, the signal is relayed when a signal that is not sent to the unit is received. When the signal received via the antenna 21 and the transmission/reception unit 22 is a signal transmitted to the own device, the communication control unit 23 performs processing of the response signal content. For example, the communication control unit 23 analyzes the signal input from the transmission/reception unit 22, that is, the received signal, and determines the type of the received signal. The type of the received signal is a response to the identifier distribution request, and the response is not an error. In the case of the user, the identifier stored in the response is set as an identifier for local communication, and is notified to the application processing unit 24. Thereafter, the communication control unit 23 uses the above-described set identifier as the transmission source identifier. For example, when the communication control unit 23 transmits the data signal storing the data generated by the application processing unit 24 to the parent machine 1, the above-described set target is transmitted. The symbol is stored as the source identifier in the data signal.

The application processing unit 24 generates the transmitted material, and transmits the generated data to the communication control unit 23. In the present embodiment, the processing executed by the application processing unit 24 is, for example, a process of transmitting the generated data every predetermined period of time, and the application processing unit 24 transmits the generated data to the communication control unit 23 every predetermined period of time. Further, instead of the application processing unit 24 directly generating data, the slave unit 2 is connected to an external device such as a measurement device, and the application processing unit 24 can transmit the data acquired from the external device to the communication control unit 23 every predetermined period of time. The application processing unit 24 sets the data capacity of the generated data in advance, and the application processing unit 24 holds the data capacity in the internal or external memory. The application processing unit 24 holds the data capacity as, for example, the above-mentioned occupancy. The application processing unit 24 transmits the data to the communication control unit 23 after the identifier is attached to each of the above-mentioned data. Further, the application processing unit 24 may output the data occupying the number to the communication control unit 23 without corresponding to the attached identifier.

Fig. 5 is a view showing a configuration example of the relay unit 3 of the embodiment. As shown in FIG. 5, the slave 2 includes an antenna 31, a transmission/reception unit 32, and a communication control unit 33. The transmitting/receiving unit 32 receives the wireless signal through the antenna 31, converts the received wireless signal into a digital signal, and inputs it to the communication control unit 33. Further, the transmission/reception unit 32 converts the signal input from the communication control unit 33 into an analog signal and transmits it as a wireless signal through the antenna 31. That is, the transmission/reception unit 32 has a transmission unit and a reception unit, the transmission unit of the antenna 31 and the transmission/reception unit 32 is a transmitter, and the reception unit of the antenna 31 and the transmission/reception unit 32 is a receiver.

The communication control unit 33 performs communication protocol processing in accordance with the wireless communication standard. Specifically, for example, the communication control unit 33 produces the data based on the transmitted data. The radio frame signal of the signal in the wireless signal format according to the wireless communication specification is input to the transmission/reception unit 32. Further, when the device does not assign an identifier to the device, the communication control unit 33 generates a flag distribution request to be transmitted to the parent machine 2. When the identifier distribution request is transmitted, the communication control unit 33 uses the dedicated identifier required for the preset flag distribution as the transmission source identifier. It is judged whether or not the signal received via the antenna 31 and the transmitting/receiving unit 32 is sent to the local device, and the communication control unit 33 transmits the signal via the transmitting/receiving unit 32 and the antenna 31 in the case of not transmitting the signal to the own unit. . When the signal received via the antenna 31 and the transmission/reception unit 32 is a signal transmitted to the own device, the communication control unit 33 performs processing of the response signal content. For example, the communication control unit 33 analyzes the signal input from the transmission/reception unit 32, that is, the received signal, and determines the type of the received signal. The type of the received signal is a response to the identifier distribution request, and the combination should be a notification error. In the case of the user, the identifier stored in the response is set as the identifier used for the local communication.

Further, in the slave units 2-1 to 2-3, the counterpart of the communication, that is, the identifier of the parent machine 1 is set in advance. Further, in the relay unit 3, the identifier of the parent machine 1 is also set in advance. Moreover, the communication route between the parent machine 1 and the slave machines 2-1 to 2-3 is a self-disciplined architecture communication route, and the parent machine 1 and the slave machines 2-1 to 2-3 are directly or not in the unstructured route. It is also possible to connect to the parent machine 1 via the relay unit 3 in a star type.

Next, the hardware configuration of the parent machine 1 will be described. As described above, the transmission unit of the antenna 11 and the transmission/reception unit 12 is a transmitter, and the reception unit of the antenna 11 and the transmission/reception unit 12 is a receiver. The communication control unit 13, the identifier calculation unit 14, and the application processing unit 15 are mounted as processing circuits.

The processing circuit for realizing the communication control unit 13, the identifier calculation unit 14, and the application processing unit 15 may be dedicated hardware, and includes a memory and a CPU (Central Processing Unit) that executes a program stored in the memory. The control circuit of the central processing unit, the processing unit, the arithmetic unit, the microprocessor, the microcomputer, the processor, and the DSP (Digital Signal Processor) may be referred to as a control circuit. The memory corresponds to, for example, RAM (Random Access Memory), ROM (Read Only Memory), flash memory, and EPROM (Erasable Programmable Read Only Memory). Non-volatile or volatile semiconductor memory, disk, etc., such as EEPROM (Electrically Erasable Programmable Read Only Memory) , flexible disk, optical disk, compact disk, mini disk, DVD (Digital Versatile Disk).

In the case where the above-described processing circuit is implemented by a dedicated hardware, such as a single circuit, a composite circuit, a programmed processor, a parallel-programmed processor, an ASIC ( Application Specific Integrated Circuit, FPGA (Field Programmable Gate Array), or a combination of these.

In the case where the above-described processing circuit is realized by a control circuit including a CPU, the control circuit is, for example, a control circuit 200 constructed as shown in FIG. As shown in FIG. 6, the control circuit 200 includes: receiving input from the outside The data receiving unit, that is, the input unit 201; the CPU, that is, the processor 202; the memory 203; and the data transfer unit to the external transfer unit, that is, the output unit 204. The input unit 201 is an interface circuit that receives the data input from the outside of the control circuit 200 and transmits the data to the processor 202. The output unit 204 transmits the data from the processor 202 or the memory 203 to the outside of the control circuit 200. Interface circuit. When the processing circuit described above is implemented by the control circuit 200 as shown in FIG. 6, the processor 202 reads and executes the communication control unit 13 and the identifier calculation unit 14 which are stored in the memory 203 and The program corresponding to each process of the application processing unit 15 is realized. Moreover, the memory 203 can also be used as a temporary memory for each process performed by the processor 202.

Each of the communication control unit 13, the identifier calculation unit 14, and the application processing unit 15 may be implemented by a processing circuit, and two or more of the communication control unit 13, the identifier calculation unit 14, and the application processing unit 15 may be used as one processing. The circuit can also be implemented.

Next, the hardware configuration of the slave unit 2 will be described. As described above, the transmission unit of the antenna 21 and the transmission/reception unit 22 is a transmitter, and the reception unit of the antenna 21 and the transmission/reception unit 22 is a receiver. The communication control unit 23 and the application processing unit 24 are mounted as processing circuits. The processing circuit is the same as the processing circuit described in the parent machine 1. It may be a dedicated hardware, and may include a control circuit of the CPU.

Next, the hardware configuration of the relay unit 3 will be described. As described above, the transmission unit of the antenna 31 and the transmission/reception unit 32 is a transmitter, and the reception unit of the antenna 31 and the transmission/reception unit 32 is a receiver. The communication control unit 33 is mounted as a processing circuit. Processing circuit and processing circuit described in the parent machine 1 The same, it can be a dedicated hardware, including the control circuit of the CPU.

Hereinafter, the operation of this embodiment will be described. First, the operation of the slave 2 will be described. Fig. 7 is a flow chart showing an example of a processing procedure for the marker distribution in the child machine 2 of the embodiment. When the processing of the application processing unit 24 is, for example, the first start, and the identifier of the own machine is not set, the sub-machine 2 performs the processing regarding the marker distribution shown in FIG. 7 . As shown in Fig. 7, first, the slave unit 2 sets the local mode by using the dedicated identifier required for the flag distribution required in advance as the identifier used for the machine (step S1). Specifically, the communication control unit 23 of the slave unit 2 uses the dedicated identifier required for the identifier distribution as the transmission source identifier of the transmission signal, and the case where the transmission identifier of the received signal is the dedicated identifier required for the marker distribution. Next, judge it as the signal sent to the unit.

Next, the child machine 2 generates a flag distribution request including the number of occupations of the own machine, and transmits it to the parent machine 1 (step S2). Specifically, the communication control unit 23 of the slave device 2 inquires of the application processing unit 24 about the number of occupations, acquires the number of occupations from the application processing unit 24, and generates a flag distribution request in which the number of occupations is stored, via the transmission/reception unit 22 and the antenna 21. Transfer. Further, although the identifier distribution request transmitted from the slave unit 2 is directly received by the parent unit 1, it may be received by the base unit 1 after passing through the relay unit 3 as shown in FIG. In the relay unit 3, when the communication control unit 33 receives the identifier distribution request transmitted from the slave unit 2 via the antenna 31 and the transmission/reception unit 32, since it is not a signal transmitted to the unit, it will be received. The signal is transmitted via the transmitting/receiving unit 32 and the antenna 31, that is, the received signal is transferred. Next, the parent machine 1 receives the marker distribution request transmitted from the relay machine 3. Relay 3 is stored between the slave 2 and the master 1 In the case of one or more, the transfer of the relay device 3 is repeated, and the flag distribution request is reached to the parent machine 1. Further, in the above description, although the example in which the relay device 3 performs the transfer is illustrated, since the slave device 2 also has the relay function, there are several of the relay devices 3 that are transferred in the above description. Or all of them are the case of the slave 2. The operation of the slave device 2 in the relay state is the same as that of the relay device 3. When the data signal that is not sent to the own device is received, if the relay device has not been distributed from the parent device 2 to the identifier, , the transmission request is required as the identifier distribution of the identifier distribution of the relay machine.

Fig. 8 is a view showing an example of a format of a marker distribution requirement. As shown in Figure 8, the identifier distribution requirements include the shipping location identifier, the transmission source identifier, the category, and the number of possessions. A special identifier for the predetermined identifier distribution is stored in the transmission source required by the identifier distribution, the identifier of the parent machine 1 is stored in the mailing identifier, and information indicating the distribution of the identifier is stored in the category. Moreover, FIG. 8 is an example, and the format of the identifier distribution requirement is not limited to the illustration of FIG.

Returning to the description of Fig. 7, when the slave 2 receives the identifier from the parent machine 1, the slave device 2 sets the local device so as to communicate using the received identifier (step S3). Specifically, the communication control unit 23 of the slave unit 2 receives the response of the identifier distribution request from the parent machine 1 via the antenna 21 and the transmission/reception unit 22, and if the response is not the notification of the wrong person and the identifier is stored in the response, This flag is set as the identifier of the local communication of the subsequent communication. For example, when the child machine 2 transmits the data generated by the application processing unit 24, the transmission source identifier is set to the identifier stored in the response, and the occupied number information of the local use identifier distribution request notification is transmitted and stored. Information signal. Also, occupying a few points of information It is not a single transmission, but it is also possible to transfer data per unit. In this case, all of the data symbols stored in the respective data are stored as the transmission source identifiers in the respective data signals in which the respective data are stored.

Next, the operation of the relay unit 3 will be described. Fig. 9 is a flow chart showing an example of a processing procedure of the identifier distribution request of the relay unit 3 of the embodiment. When the repeater 3 is started up, for example, when the identifier of the own machine has not been set, the process of distributing the marker as shown in FIG. 9 is performed. As shown in FIG. 9, first, the relay unit 3 sets the local mode in such a manner that the dedicated identifier using the predetermined flag distribution request is used as the identifier used by the device (step S11). Specifically, the communication control unit 33 of the relay unit 3 uses the dedicated identifier required for the identifier distribution as the transmission source identifier of the transmitted signal, and the destination identifier of the received signal is the dedicated identifier required for the distribution of the identifier. In the case, it is judged to be a signal sent to the unit.

Next, the relay unit 3 generates an identifier distribution request including information indicating that the unit is a relay machine, and transmits it to the parent machine 1 (step S12). Specifically, the communication control unit 33 of the relay unit 3 generates an identifier distribution request for storing information indicating that the unit is a relay machine, and transmits it via the transmission/reception unit 32 and the antenna 31. The identifier distribution required to be transmitted from the relay unit 3 is, for example, the same format as the identifier distribution requirement shown in FIG. 8. By storing 0 in the occupied area and setting the occupied number to 0, the display unit is relayed. The machine is also available. Or, in the identifier distribution request, the area different from the occupied number is set, and whether the area of the relay 3, that is, the information displayed as the repeater 3 or the slave 2 is displayed, and the display is stored as a relay in the area. The information of machine 3 is also available. In this case, the slave 2 stores information displayed as the slave 2 in the area. Also, the identifier transmitted from the relay unit 3 The distribution request may be directly received by the parent machine 1, and may be received by the parent machine 1 through the other relay machine 3 or the child machine 2.

Returning to the description of Fig. 9, when the relay unit 3 receives the identifier from the parent machine 1, the local machine is set in such a manner as to communicate using the received identifier (step S13). Specifically, the communication control unit 33 of the relay unit 3 receives the response of the identifier distribution request from the parent machine 1 via the antenna 31 and the transmission/reception unit 32, and in the case where the response is not a notification error and the identifier is stored in the response, Use this flag to set the identifier of the unit that is the subsequent communication.

Next, the operation of the parent machine 1 will be described. FIG. 10 is a flowchart showing an example of the procedure of the marker calculation processing by the marker calculation unit 14 of the parent machine 1 of the embodiment. The identifier calculation unit 14 of the parent machine 1 initializes the following parameters, that is, the child maximum identifier and the relay minimum identifier (step S21). The child machine maximum identifier of the first value is a value indicating the maximum value of the identifier assigned to the child machine 2 up to now, that is, the maximum value of the identifier assigned to the child machine 2. The relay value minimum identifier of the second value is a value indicating the minimum value of the identifier assigned to the relay unit 3, that is, the minimum value of the identifier assigned to the relay unit 3. Specifically, for example, the child machine maximum identifier is initialized to a value that is one less than the minimum value of the range of values that can be used as the identifier, and the relay minimum identifier is initialized to a value that is usable as the identifier. The maximum value of the range is smaller than the value of 1. For example, when the value range that can be used as the identifier is 1 to 511, the slave maximum identifier is set to 0, and the relay minimum identifier is set to 511. Further, 511 is used as a flag for the identifier distribution request, and is not used as an identifier assigned to the relay 3 and the slave 2. Therefore, the maximum value of the identifiers assignable to the repeater 3 and the slave 2 is 510.

Next, the identifier calculation unit 14 waits to receive the identifier distribution request from the slave 2 or the relay 3, and waits for reception of the identifier distribution request from the slave 2 or the relay 3 (step S22). When the identifier distribution request is received via the antenna 21, the transmission/reception unit 22, and the communication control unit 23 (step S23), the transmission source of the identifier distribution request is confirmed (step S24). Specifically, when the identifier calculation unit 14 sets the area of the number of occupations required for the identifier distribution to 0, for example, when the mode is displayed as the relay unit 3, when the number of occupations is 0, the transmission source is determined to be The relay unit 3 determines that the transmission source is the slave unit 2 when the number of occupations is not zero.

When the transmission source is the slave 2 (the slave in step S24), the identifier calculation unit 14 confirms whether or not the expression (1) is satisfied (step S25).

Sub-machine maximum identifier + received occupancy number <relay minimum identifier...(1)

When the expression (1) is satisfied (YES in step S25), the marker calculation unit 14 determines that the "slave maximum identifier +1" is the identifier (step S26). In other words, the identifier calculation unit 14 assigns the identifier of the child maximum identifier to 1 to the slave 2 of the transmission source required for the marker distribution. The identifier calculation unit 14 outputs the determined identifier to the communication control unit 23.

Next, the identifier calculation unit 14 updates the child maximum identifier to "the child maximum identifier + the number of occupations received from the request source" (step S27), and returns to step S22. The number of possessions received from the requesting source is the number of possessions stored in the identifier distribution requirements.

When it is determined in the step S25 that the expression (1) is not satisfied (NO in the step S25), the identifier calculation unit 14 notifies the communication control unit 23 of the error. The assignment of the identifier is not notified to the communication control unit 23 (step S31), and the flow returns to step S22. In the present embodiment, in the slave unit 2, the identifier is assigned to the upper number from the lower number to the upper number, and the identifier is assigned to the lower number from the high number in the relay unit 3, and the expression (1) is not satisfied. Next, the identifier assigned to the relay 3 is overlapped with the identifier to be assigned to the slave 2, and thus the identifier is not assigned to the slave 2. In other words, when the wireless device that determines the transmission source of the identifier distribution request is the slave 2, the identifier calculation unit 14 repeats the value of the maximum identifier of the slave and the number of possessions stored in the identifier distribution. In the case of a machine minimum identifier or more, the wireless device that transmits the source to the identifier is not assigned an identifier.

In the case where the transmission source is the relay unit 3 (the relay machine in step S24), it is checked whether or not the following formula (2) is satisfied (step S28).

Repeater minimum identifier-1> child maximum identifier...(2)

When the expression (2) is satisfied (YES in step S28), the identifier calculation unit 14 determines "the relay minimum identifier-1" as the identifier (step S29). In other words, the identifier calculation unit 14 assigns the identifier having the relay minimum identifier of 1 to the relay device 3 of the transmission source of the marker distribution request. The identifier calculation unit 14 outputs the determined identifier to the communication control unit 23.

Next, the identifier calculation unit 14 updates the relay minimum identifier to "relay minimum identifier-1" (step S30), and returns to step S22. When the formula (2) is not satisfied (NO in step S28), the process proceeds to step S31. That is, when the wireless device that determines the source of the identifier distribution request is the relay device 3, if the minimum value of the identifier of the identifier assigned to the relay device 3 is one, the identifier of the slave device is less than the maximum identifier of the child machine. In the case of the wireless device of the transmission source of the transmission source of the identifier distribution, the identifier is not assigned.

Next, an operation of generating a response to the identifier distribution request by the communication control unit 23 will be described. FIG. 11 is a flowchart showing an example of a processing procedure of the response of the communication control unit 23 to the signature distribution request. When the communication control unit 23 receives the identifier distribution request via the antenna 21 and the transmission/reception unit 22, it transmits the identifier distribution request to the marker calculation unit 14, and waits for the notification from the marker calculation unit 14 to start generating the image as shown in FIG. The processing of the response to the marker assignment requirements is shown. The notification from the identifier calculation unit 14 is a notification of an identifier or an error notification. For example, when the value of the display error is predetermined, and the value of the display error is notified from the marker calculation unit 14, the communication control unit 23 determines that the error is notified. The value that displays the error is set to a value other than the valid value of the identifier. When the identifier calculation unit 23 obtains a value other than the display error, the communication control unit 23 determines that the identifier is received.

As shown in FIG. 11, the communication control unit 23 determines whether or not the identifier is received from the marker calculation unit 14 (step S32). When the identifier is received from the marker calculation unit 14 (YES in step S32), a flag indicating that the marker to be distributed, that is, the marker calculated by the marker calculation unit 14 is stored, that is, the identifier distribution is required. Answer (step S33). Fig. 12 is a view showing an example of the format of the response generated by the step S33. As shown in FIG. 12, the response includes an identifier of the mailing place identifier, the transmission source identifier, the category, and the distribution. The source identifier stored in the identifier distribution is stored in the mailer identifier. Further, the identifier of the parent machine 1 is stored in the transmission source identifier, and the information displayed as the response to the marker distribution request is stored in the category.

When the flag is not received by the identifier calculation unit 14 in step S32, that is, when an error is notified (NO in step S32), a storage is generated. There is a response to the notification of the error message (step S34). The format of the response in which the information of the notification error is stored is, for example, in the same format as that of FIG. 12, and the information indicating the notification error is stored in the area of the category or the area in which the identifier is to be distributed. Alternatively, a response to another format of FIG. 12 is generated, and information for displaying a notification error may be stored. In this case, the mailing address identifier and the transmission source identifier are also included in the response, and the transmission source identifier stored in the identifier distribution requirement is stored in the mailing address identifier, and the parent machine 1 is stored in the transmission source identifier. Signs. The response generated by the above steps is transmitted to the slave 2 or the repeater 3 through the transmitting/receiving section 22 and the antenna 21. Further, in the same manner as in the case of transmitting the identifier distribution request, the slave device 2 or the relay device 3 may transmit the response back to the slave device 2 or the relay device 3 of the transmission source required for the marker distribution.

According to the above processing, when the response of the flag distribution request is received, the child machine 2 or the relay device 3 of the transmission source required for the flag distribution communicates using the identifier stored in the response as described above. The child machine 2 stores the identifier stored in the response as a transmission source identifier and transmits it after storing the data signal of the data generated by the application processing unit 24. Fig. 13 is a view showing an example of a format of a data signal. The data signal contains the mailing address identifier, the source identifier, the category and the data. The identifier of the parent machine 1 is stored in the mailing address identifier, the identifier stored in the response is stored in the transmission source identifier, and the identifier displayed as the data signal is stored in the category. The data generated by the application processing unit 24 is stored in the material. Further, as described above, the information of the number of the slaves 2 stored in the data signal may be stored, and the data signal may be generated for each unit of data.

Next, the application processing of the parent machine 1 and the slave machine 2 will be described. FIG. 14 is a flowchart showing an example of the processing procedure of the application processing unit 24 of the slave unit 2. As shown in FIG. 14, the application processing unit 24 determines whether or not the material to be transmitted has occurred or has elapsed for a certain period of time (step S101). When the data to be transmitted has occurred or a certain period of time has elapsed (YES in step S101), the application processing unit 24 outputs the data to the communication control unit 23 (step S102), and returns to step S101. The communication control unit 23 transmits the data signal storing the data output from the application processing unit 24 via the transmission/reception unit 22 and the antenna 21. When the data to be transmitted does not occur and a certain period of time has not elapsed (NO in step S101), the process returns to step S101. Further, since the condition of step S101 differs depending on how the information transmission timing is specified, the transmission timing is not limited to the condition shown in step S101.

FIG. 15 is a flowchart showing an example of the processing procedure of the application processing unit 15 of the parent machine 1. As shown in FIG. 15, the application processing unit 15 determines whether or not data is received from the slave unit 2 via the antenna 11, the transmission/reception unit 12, and the communication control unit 13 (step S201). When the data is received from the child machine 2 (YES in step S201), the application processing unit 15 stores the received data in the number of the slaves corresponding to the source identifier from the position corresponding to the source identifier on the material map. The divided area (step S202) returns to step S201. When the data is not received from the child machine 2 (NO in step S201), the process returns to step S201. Further, the application processing unit 15 determines that the data amount of the received data does not match the amount of data corresponding to the number of occupations. Alternatively, the application processing unit 15 stores the received data from the front of the area when the amount of received data cannot fill the amount of data corresponding to the number of occupations, and the amount of received data exceeds the corresponding number of data. In the case of volume, discard data that exceeds the number of possessions.

Next, the operation of this embodiment will be described with reference to a specific example of the assumed number of possessions. Fig. 16 is a view showing an example of the number of occupations of the slave unit 2 in the communication system of the embodiment. Fig. 16 is a view showing the number of occupations of the slave units 2-1 to 2-3 when the configuration of the communication system shown in Fig. 1 is assumed. In the example shown in FIG. 16, the number of occupations of the slave unit 2-1 is 2, the number of occupation of the slave unit 2-2 is 3, and the number of occupation of the slave unit 2-3 is 1. The relay unit 3 does not generate data.

Fig. 17 is a flowchart showing an example of distribution processing of identifiers in the communication system of the embodiment. First, as shown in steps S21 and S22 of FIG. 10, the parent machine 1 initializes the child maximum identifier and the relay minimum identifier, and waits for reception of the identifier distribution request (step S41, step S42). Among them, the child machine maximum identifier is initialized to 0, and the relay minimum identifier is initialized to 511. After that, as shown in step S1 and step S2 of FIG. 7, the slave unit 2-1 sets the dedicated identifier of the identifier distribution request to the local machine, and transmits the identifier distribution request with the number of occupations set to 2 (step S43, step S44). ). Further, among them, the dedicated identifier required for the identifier distribution is 511 as described above.

The parent machine 1 uses the step S24 shown in FIG. 10 to determine that the transmission source of the identifier distribution request is the child machine 2, performs the comparison shown in step S25, proceeds to step S26, determines the flag to be 1, and transmits the determined storage. The response of the identifier (step S45). Specifically, since the child maximum identifier + the received occupancy number = 0 + 2 = 2 and the relay minimum identifier = 511, the steps of the marker calculation unit 14 implemented in step S45 are as shown in FIG. In S25, it is the child maximum identifier + the received number of possession <the relay minimum identifier, and the flow proceeds to step S26. Next, in step S26 of FIG. 10 implemented in step S45, the identifier assigned to the slave 2-1 is the child maximum identifier +1=1. The communication control unit 13 counts from the identifier The output unit 14 receives the identifier, and transmits a response in which the received identifier is stored via the transmitting/receiving unit 12 and the antenna 11. Further, as shown in step S27 of Fig. 10, the parent machine 1 updates the child machine maximum identifier to the child machine maximum identifier + the received number of occupations = 2 (step S46). Next, it waits again for receiving the flag distribution request (step S47). When receiving the response, the slave 2-1 sets the identifier of the response, that is, 1 as the identifier of the local device (step S48).

Next, as shown in steps S11 and S12 of FIG. 9, the relay unit 3 sets the unique identifier of the identifier distribution request to the local machine, and transmits the identifier distribution request for which the local machine is the relay unit 3 (step S49). , step S50).

The parent machine 1 determines that the transmission source of the marker distribution request is the relay machine 3 by using the step S24 shown in FIG. 10, performs the comparison shown in step S28, proceeds to step S29, determines the identifier to be 510, and transmits and stores the determined flag. The response is (step S51). Specifically, since the relay minimum identifier -1=510 and the child maximum identifier=2, the relay minimum flag is shown in step S28 of FIG. 10 in the marker calculation unit 14 implemented in step S51. The symbol -1> child machine maximum identifier, proceeds to step S29. The communication control unit 13 receives the identifier from the identifier calculation unit 14, and transmits a response in which the received identifier is stored via the transmission/reception unit 12 and the antenna 11. Next, in step S29 of FIG. 10 implemented in step S51, the identifier assigned to the relay unit 3 is the relay minimum identifier -1=510. Further, as shown in step S30 of Fig. 10, the parent machine 1 updates the relay minimum identifier to the relay minimum identifier -1 = 510 (step S52). Next, it waits again for receiving the flag distribution request (step S53). When receiving the response, the repeater 3 sets the identifier of the response, that is, 510, as the identifier of the local device (step S54).

Thereafter, as shown in step S1 and step S2 of FIG. 7, the slave 2-2 sets the dedicated identifier required for the identifier distribution to the local machine, and transmits the identifier distribution request with the number of occupations set to 3 (step S55, step S56). ).

The parent machine 1 uses the step S24 shown in FIG. 10 to determine that the transmission source of the identifier distribution request is the slave unit 2, performs the comparison shown in step S25, proceeds to step S26 to determine the identifier to be 3, and transmits and stores the determined flag. The response of the identifier (step S57). Specifically, since the child maximum identifier + the received occupancy number = 2+3 = 5 and the relay minimum identifier = 510, the steps of the marker calculation unit 14 implemented in step S57 are as shown in FIG. In S25, it is the child maximum identifier + the received number of possession <the relay minimum identifier, and the flow proceeds to step S26. Next, in step S26 of FIG. 10 implemented in step S57, the identifier assigned to the slave 2-2 is the child maximum identifier +1=3. The communication control unit 13 receives the identifier from the identifier calculation unit 14, and transmits a response in which the received identifier is stored via the transmission/reception unit 12 and the antenna 11. Further, as shown in step S27 of Fig. 10, the parent machine 1 updates the child machine maximum identifier to the child machine maximum identifier + the received number of occupations = 5 (step S58). Next, it waits again for receiving the flag distribution request (step S59). When the slave 2-2 receives the response, the identifier stored in the response, that is, 3 is set as the identifier of the own device (step S60).

Thereafter, as shown in step S1 and step S2 of FIG. 7, the slave unit 2-3 sets the dedicated identifier required for the identifier distribution to the local machine, and transmits the identifier distribution request with the number of occupations set to 1 (step S61, step S62). ).

The parent machine 1 uses the step S24 shown in FIG. 10 to determine that the transmission source of the identifier distribution request is the slave unit 2, performs the comparison shown in step S25, proceeds to step S26 to determine the identifier to be 6, and transmits and stores the determined flag. Signature Answer (step S63). Specifically, since the child maximum identifier + the received number of possessions = 5 + 1 = 6, and the relay minimum identifier = 510, the steps of the marker calculation unit 14 implemented in step S63 are as shown in FIG. In S25, it is the child maximum identifier + the received number of possession <the relay minimum identifier, and the flow proceeds to step S26. Next, in step S26 of FIG. 10 implemented in step S63, the identifier assigned to the slave 2-3 is the child maximum identifier +1=6. The communication control unit 13 receives the identifier from the identifier calculation unit 14, and transmits a response in which the received identifier is stored via the transmission/reception unit 12 and the antenna 11. Further, as shown in step S27 of Fig. 10, the parent machine 1 updates the child machine maximum identifier to the child machine maximum identifier + the received number of occupations = 6 (step S64). Next, it waits again for receiving the flag distribution request (step S65). When receiving the response, the slave 2-3 sets the identifier of the response, that is, 6 as the identifier of the local device (step S66).

As shown above, the distribution of the identifiers, that is, the assignment of the identifiers, and the identifiers and materials after the notification, are assigned to the slaves 2-1 to 2-3 and the relay 3 in accordance with the distribution requirements of the parent machine 1 in FIG. An example of a map. As shown in FIG. 18, in the child machines 2-1 to 2-3 that perform the application processing, the data areas according to the number of occupations of the respective slave devices 2 are successively successively distributed from the front side of the data map. On the other hand, the identifier assigned to the relay device 3 that has not been subjected to the application processing is 510, and is not allocated to the range of the identifiers of the child machines 2-1 to 2-3. In Fig. 18, a data map, that is, an identifier used for application processing, in which an identifier for marking the offline is used as an identifier for communication by the slave 2 is described. In the present embodiment, the identifier used for communication is notified to the slave 2 by the response to the identifier distribution request. In the child machine 2, the identifier assigned to the own machine can be secured in the application process in accordance with the identifier notified from the response to the flag distribution request and the number of possessions of the machine. example For example, if the number of possessions of the child machine 2-1 is 2, it is possible to ensure that the two identifiers including the identifier 1 , that is, the identifier 1 and the identifier 2 are applied in the application due to the response notification flag 1 required for the distribution of the identifier. The middle is assigned to the local machine.

As a comparative example, considering the slaves 102-1 to 102-3 that do not distinguish between the application processing and the relay 103 that does not perform the application processing, the parent machine 101 assigns the identifier to the slave 102 according to the sequential incremental allocation method. -1~102-3 and the case of the relay machine 103. Fig. 19 is a view showing an example of a material map in a comparative example. When the parent machine 101 is sequentially assigned from the low-numbered identifiers in the order of receiving the identifier distribution in the non-regional molecular machines 102-1 to 102-3 and the relay machine 103, as shown in FIG. The identifier assigned to the relay unit 3 exists in the range of the identifiers assigned to the slave units 102-1 to 102-3. In the comparative example, in the case where the data map is generated in such a manner that the data area is secured for each of the identifiers, the data area of the relay unit 103 that does not transmit the data generated by the application processing is secured on the material map. For this reason, there is an area in which data is stored without meaningful data.

In this regard, in the present embodiment, as shown in FIG. 18, there is no data area corresponding to meaningless data on the material map, and no meaningless data is stored in the collected data. For this reason, it is possible to suppress invalid data in the collected data.

Next, the marker distribution processing in the communication system of the present embodiment which is different from the exemplary embodiment shown in FIG. 16 will be described. Fig. 20 is a view showing a configuration example of a communication system of the embodiment. In FIG. 16, although the relay device 3 of the slaves 2 and 1 of the three devices is shown as an example of the transmission of the identifier distribution request, in the illustration of FIG. 20, the relays 3-1 to 3- are set. 11 of 11 The relay 3 has distributed the identifiers, and the identifiers have been distributed in the handset 2 of the (x-1) machine of the slave 2-1 to the slave 2-(x-1). x is an integer of 2 or more. Further, the slave maximum identifier is updated to 497 according to the identifier assignment of the slave 2-1 to the slave 2-(x-1). In this state, the sub-machine 2-x occupying the number 5 transmits the identifier distribution request. Further, since the identifiers are already distributed among the 11 relay machines 3, in the illustration of Fig. 20, the relay minimum identifier is 500.

Fig. 21 is a flowchart showing an example of the flag distribution processing in the case where the child machine 2-x transmits the flag distribution request in the state shown in Fig. 20. First, as described above, in the parent machine 1, the state in which the child maximum identifier = 497 and the relay minimum identifier = 500 are set (step S71). As shown in step S1 and step S2 of Fig. 7, the slave 2-x sets the dedicated identifier required for the identifier distribution to the local machine, and transmits the identifier distribution request with the number of occupations set to 5 (step S72, step S73).

The parent machine 1 uses the step S24 shown in FIG. 10 to determine that the transmission source of the identifier distribution request is the child machine 2, performs the comparison shown in step S25, proceeds to step S31 and determines that it is an error, and transmits the information storing the notification error. Answer (step S74). Specifically, since the child maximum identifier + the received occupancy number = 497 + 5 = 502 and the relay minimum identifier = 500, the steps of the marker calculation unit 14 implemented in step S74 are as shown in FIG. In S25, it is the child maximum identifier + the received number of possession ≧ relay minimum identifier, and the process proceeds to step S31. The communication control unit 13 receives an error notification from the identifier calculation unit 14, and transmits a response in which the information of the notification error is stored via the transmission/reception unit 12 and the antenna 11. Further, since the parent machine 1 does not transmit the identifier for the child machine 2-x, that is, the flag is not assigned to the child machine 2-x, the child machine maximum identifier is not changed.

As described above, in the present embodiment, even when the identifier distribution request is received from the child machine 2, the identifier assigned to the child machine 2 is distributed by the child machine 2, and the value of the identifier assigned to the child machine 2 is made. When the range is overlapped with the range of the value of the identifier assigned to the relay unit 3, that is, the maximum value of the child machine and the number of possessions stored in the identifier distribution are added, the value of the minimum identifier of the relay is above In this case, the slave unit 1 does not distribute the identifier for the slave 2 of the transmission source required for the identifier distribution but notifies the error. Thereby, it is possible to prevent the range of the value of the identifier assigned to the slave 2 from being overlapped with the range of the value of the identifier assigned to the relay 3, preventing the storage of meaningless data in the aggregated data.

Next, the marker distribution processing in the communication system of the present embodiment which is different from the exemplary embodiment shown in Figs. 16 and 20 will be described. Fig. 22 is a view showing a configuration example of the communication system of the embodiment. In Fig. 22, the repeater 3 of the repeater 3-1 to 3-11 has already distributed the identifier, and has been already in the slave 2 of the slave 2-1 to the slave 2-y. Distribution identifier. y is an integer of 2 or more. Moreover, according to the identifier assignment of the slave 2-1 to the slave 2-y, the slave maximum identifier has been updated to 499, since the identifier has been distributed among the 11 relays 3, the relay minimum flag The symbol is 500. In this state, the relay 3-12 transmits an identifier distribution request.

Fig. 23 is a flowchart showing an example of the flag distribution processing in the case where the relay device 3-12 transmits the marker distribution request in the state shown in Fig. 22; First, as described above, in the parent machine 1, the state in which the child maximum identifier = 499 and the relay minimum identifier = 500 are set (step S81). As shown in step S11 and step S12 of FIG. 9, the relay unit 3-12 sets the special identifier required for the identifier distribution to the local machine, and transmits and stores the information indicating that the local machine is the relay unit 3. The flag distribution request (step S82, step S83).

The parent machine 1 uses the step S24 shown in FIG. 10 to determine that the transmission source of the identifier distribution request is the relay unit 3, performs the comparison shown in step S28, proceeds to step S31 and determines that it is an error, and transmits the information storing the notification error. The response is (step S84). Specifically, since the relay minimum identifier -1=499 and the child maximum identifier are 499, the relay minimum flag is shown in step S28 of FIG. 10 of the marker calculation unit 14 implemented in step S84. The -1 ≦ machine maximum identifier, proceeds to step S31. The communication control unit 13 receives an error notification from the identifier calculation unit 14, and transmits a response in which the information of the notification error is stored via the transmission/reception unit 12 and the antenna 11. Since the parent machine 1 does not transmit an identifier for the relay 3-12, that is, no identifier is assigned to the relay 3-12, the relay minimum identifier is not changed.

As described above, in the present embodiment, even when the identifier distribution request is received from the relay unit 3, the identifier assigned to the slave unit 2 is distributed by distributing the identifier to the relay unit 3. In the case where the range of the flag is overlapped with the range of the value of the identifier assigned to the relay unit 3, the relay unit 3 of the transmission source required for the flag distribution does not distribute the identifier but not the error. Thereby, it is possible to prevent the range of the value of the identifier assigned to the slave 2 from being overlapped with the range of the value of the identifier assigned to the relay 3, preventing the storage of meaningless data in the aggregated data.

The configuration shown in the above embodiments is an example of the present invention, and may be combined with other well-known technologies, and a part of the configuration may be omitted or changed without departing from the scope of the invention.

1‧‧‧ parent machine

11‧‧‧Antenna

12‧‧‧Transmission/receiving department

13‧‧‧Communication Control Department

14‧‧‧Signal Calculation Unit

15‧‧‧Application Processing Department

Claims (18)

A wireless device, comprising: a transmitting/receiving unit that receives an identifier distribution requirement of a distribution of required identifiers; and an allocating unit that determines a wireless source of a transmission source required by the identifier distribution according to the identifier distribution requirement The first wireless device of the data transmission source or the second wireless device of the relay device sets the assignable identifier when the wireless device that determines the transmission source of the identifier distribution is the first wireless device The wireless device that excludes the minimum identifier of the assigned identifier from being assigned to the transmission source of the identifier distribution, and determines that the wireless device of the transmission source required by the identifier distribution is the second wireless device, Among the assignable identifiers, the wireless device that excludes the maximum identifier of the assigned identifier from being assigned to the transmission source of the aforementioned identifier distribution; and the communication control unit generates the identifier that is stored according to the allocation portion assigned by the foregoing allocation portion In response, the generated response is transmitted to the wireless device of the transmission source required by the identifier distribution through the transmitting/receiving unit. The wireless device according to claim 1, wherein, when the wireless device of the transmission source required for the identifier distribution is the first wireless device, the identifier distribution request includes the transmission of the identifier distribution request The number of identifiers occupied by the wireless device of the source is the number of identifiers occupied by the wireless device. When the wireless device that determines the transmission source of the identifier distribution is the first wireless device, the distribution unit displays that the first wireless device has been allocated. The identifier of the first value of the maximum value of the identifier is assigned to the wireless device of the transmission source of the aforementioned identifier distribution, and the first value is added to the number of occupations stored in the identifier distribution requirement. The wireless device of claim 2, wherein, when the wireless device of the transmission source required for the identifier distribution is the second wireless device, the number of occupations required for the identifier distribution is set to 0, The distribution unit determines whether the wireless device of the transmission source required for the identifier distribution is the second wireless device or the first wireless device, based on whether or not the number of occupations stored in the identifier distribution requirement is zero. The wireless device of claim 1, wherein the identifier distribution requirement includes information indicating whether or not the wireless device of the transmission source required by the identifier distribution is the second wireless device. The wireless device of claim 2, wherein the identifier distribution requirement includes information indicating whether or not the wireless device of the transmission source of the identifier distribution requirement is the second wireless device. The wireless device of claim 2, 3 or 5, wherein the wireless device that determines the source of the identifier distribution request is the second wireless device, and if the second wireless device has been allocated When the identifier of the machine has a minimum value of 1 and the identifier of the first value is equal to or less than the first value, the wireless device of the transmission source required for the distribution of the identifier is not assigned an identifier. The wireless device of claim 2, 3 or 5, wherein the wireless device that determines the transmission source of the identifier distribution requirement is the second wireless device, and the display has been assigned to the second The identifier of the second value of the minimum value of the identifier of the wireless device is assigned to the wireless device of the transmission source of the aforementioned identifier distribution, and is decremented by one from the second value. The wireless device of claim 6, wherein the wireless device that determines the transmission source of the identifier distribution in the distribution unit is the second wireless device In the case of the machine, the identifier indicating that the second value of the minimum value of the identifier of the second wireless device that has been assigned to the second wireless device is smaller than one is assigned to the wireless source of the transmission source of the aforementioned identifier distribution, and is subtracted from the aforementioned second value. 1. The wireless device according to the seventh aspect of the invention, wherein the determining unit determines that the wireless device of the transmission source of the identifier distribution request is the first wireless device, and if the first value and the identifier are stored in the identifier distribution When the value of the addition of the number of occupations is equal to or greater than the second value, the wireless device of the transmission source required for the distribution of the identifier is not assigned an identifier. The wireless device according to the eighth aspect of the invention, wherein the determining unit determines that the wireless device of the transmission source of the identifier distribution request is the first wireless device, and the first value and the stored in the identifier distribution requirement When the value of the addition of the number of occupations is equal to or greater than the second value, the wireless device of the transmission source required for the distribution of the identifier is not assigned an identifier. The wireless device of claim 6, wherein the communication control unit generates a wireless source including a transmission source requesting the identifier distribution in a case where the wireless device of the transmission source required for the identifier distribution does not assign an identifier. The machine notifies the response of the erroneous information, and transmits the generated response to the wireless device of the transmission source required by the identifier distribution through the transmitting/receiving unit. The wireless device of claim 9, wherein the communication control unit generates a wireless source including a transmission source requesting the identifier distribution when the wireless device of the transmission source required for the identifier distribution does not assign an identifier. The machine notifies the response of the erroneous information, and transmits the generated response to the wireless transmission source of the aforementioned identifier distribution through the foregoing transmitting/receiving unit. machine. The wireless device of claim 10, wherein the communication control unit generates a wireless source including a transmission source requesting the identifier distribution in a case where the wireless device of the transmission source required for the identifier distribution does not assign an identifier. The machine notifies the response of the erroneous information, and transmits the generated response to the wireless device of the transmission source required by the identifier distribution through the transmitting/receiving unit. A wireless device, which is distributed from a parent machine of a wireless device of claim 2, to an identifier, comprising: a communication control unit that stores the number of identifiers displayed in the identifier distribution requirement of the distribution of the identifiers And a flag transmission/reception unit that transmits the aforementioned identifier distribution request storing the number of occupations to the parent machine, receives a response to the identifier distribution request from the parent machine, and the communication control unit stores the response in the response The identifier is set as the identifier of the unit used for communication. A relay machine is distributed from a parent machine of a wireless machine of claim 2 to a marker, and is characterized in that: the communication control unit includes a flag for storing the display in the identifier distribution request of the identifier distribution. The number of occupied area stores 0; and the flag transmitting/receiving unit transmits the aforementioned identifier distribution request storing the aforementioned number of occupations to the parent machine, and receives the aforementioned flag from the parent machine In response to the request for distribution, the communication control unit sets the identifier stored in the response as an identifier for communication. A relay machine is distributed from a parent machine of a wireless machine of claim 1 to an identifier, and is characterized in that: the communication control unit stores, in the distribution of the identifier of the required identifier, that the local machine is a relay machine. And the flag transmitting/receiving unit transmits the aforementioned identifier distribution request storing the foregoing information to the parent machine, and receives a response to the identifier distribution request from the parent machine, and the communication control unit stores the foregoing response flag The character is set as the identifier used for communication. A communication system, comprising: a parent machine, which is a wireless device described in any one of claims 1 to 9; and a first wireless device that is assigned to the identifier from the parent machine and becomes a material. a transmission source; and a second wireless device, which is a relay. A method for assigning identifiers includes: a first wireless device that becomes a transmission source of data, a second wireless device that is a relay device, and a communication system that assigns a flag to the first wireless device and the second wireless device The method includes the first step, the first wireless device or the second wireless device transmits a request mark The distribution of the identifier of the symbol is required to be sent to the parent machine; in the second step, the parent machine determines that the wireless device of the transmission source required by the identifier distribution is the first wireless device or the foregoing according to the received identifier distribution requirement When the wireless device that determines the transmission source of the identifier distribution is the first wireless device, the second wireless device assigns the minimum identifier of the assignable identifier to the aforementioned flag to the aforementioned identifier. The wireless device of the transmission source required to distribute the distribution excludes the maximum flag of the assigned identifier from among the assignable identifiers when the wireless device that determines the transmission source of the identifier distribution is the second wireless device a wireless device assigned to the transmission source of the aforementioned identifier distribution; in the third step, the parent machine generates a response storing the identifier assigned by the foregoing second step, and transmits the generated response to the identifier distribution request The wireless device of the transmission source; and in the fourth step, the first wireless device or the second wireless device that receives the response is stored in the aforementioned response The identifier of the answer is set as the identifier used for communication.