JP4950520B2 - Relay device, information transmission device, and communication system - Google Patents

Description

  The present invention relates to a relay apparatus that acquires and transmits information, an information transmission apparatus that causes the relay apparatus to perform relay transmission, and a communication system to which such a relay apparatus and the information transmission apparatus are applied.

  Wireless communication systems that perform communication between a plurality of information processing terminal devices are widely used. In the wireless communication system 3 having the configuration shown in FIG. 24, relay devices P1 to Pn for forming areas for wireless communication between the information processing terminal devices U1 to Um are arranged (m and n are arbitrary Natural number). Each of the relay devices P1 to Pn and the information processing terminal devices U1 to Um is a relay device P1 to Pn (excluding its own device) or an information processing terminal device U1 to Um (excluding its own device) that transmits and receives information. Except) is selected in advance as a communication destination device. In this selection, each of the relay devices P1 to Pn and the information processing terminal devices U1 to Um transmits and receives information for confirming the system environment, information transmission quality, and the like, so that the physical distance between each other and the information on each other In general, information transmission quality and the like when transmitting / receiving are measured, and the measurement is performed based on the measurement result. The selection result is stored in the storage means 40 provided in each of the relay devices P1 to Pn and the information processing terminal devices U1 to Um.

  The information processing terminal device U (information processing terminal device among the information processing terminal devices U1 to Um) serving as a source for transmitting communication information is the relay device P (out of the relay devices P1 to Pn) selected as the communication destination device. Communication information is transmitted to any one of the relay devices. The communication information includes a destination terminal address for identifying the information processing terminal device U as the destination. Further, the relay device P transmits the communication information acquired from the communication destination device to another communication destination device. Furthermore, the information processing terminal device U receives communication information from the communication destination device. If the destination terminal address included in the communication information matches the address assigned to the information processing terminal device U, necessary information is acquired from the received communication information.

  As a result, the communication information transmitted from the information processing terminal device U, which is the source for transmitting the communication information, is transmitted via the relay device P as the communication destination device. Is acquired by the information processing terminal device U as the destination via the other relay device P.

  As described above, each of the relay devices P1 to Pn and the information processing terminal devices U1 to Um selects a communication destination device in advance, whereby communication between the information processing terminal devices U1 to Um is performed via the relay devices P1 to Pn. A communication network is established.

Japanese Patent Laid-Open No. 2003-174453 JP 2002-281030 A

  In the wireless communication system 3 of FIG. 24, the relay device P transmits the communication information received from the communication destination device to other communication destination devices. In general, there are a plurality of communication destination devices selected by the relay device P in advance. Therefore, if the relay device P transmits the communication information to all the relay devices P selected as the communication destination device in advance, the same communication information is repeatedly transmitted and received between the limited number of relay devices P. There is a risk that a loop phenomenon will occur. In the relay apparatus P causing the loop phenomenon, the information amount of the received communication information exceeds the processing capability, which hinders wireless communication between the information processing terminal apparatuses U1 to Um in the wireless communication system 3. The probability is high.

  The present invention has been made for such a problem, a relay device capable of establishing a wireless communication path that does not interfere with wireless communication, an information transmitting device that causes the relay device to perform relay transmission, In addition, a communication system to which such a relay device and an information transmission device are applied is provided.

The present invention includes an information acquisition unit that acquires information, and an acquisition information transmission unit that transmits information acquired by the information acquisition unit, and provides a wireless path for a wired / wireless communication device wired to a wired communication network. a you establish a relay device, registers the acquired information transmitting unit transmitting destination apparatus capable of communicating information to the terminal device to the destination of a transmission destination to become the transmission destination device the information of the information to be transmitted And a deletion information generation unit that generates deletion information indicating that the registration of the transmission destination device has been deleted when the registration of the transmission destination device is deleted from the device registration unit. The acquired information transmitting unit transmits the erasure information separately from the information acquired by the information acquiring unit to a wired-side wireless path toward the wired / wireless communication apparatus, and other information on the wired-side wireless path For other devices From the radio path information having, characterized in that to remove the information on the transmission destination device registration is canceled.

In addition, the present invention includes an information acquisition unit that acquires information, and an acquisition information transmission unit that transmits information acquired by the information acquisition unit, and is wireless with respect to a wired / wireless terminal device connected by wire to a wired communication network. a relay device to establish a path, a terminal apparatus registration section for registering the destination to become the terminal apparatus information in which the acquiring information transmitting unit transmits the registration of the terminal device from the terminal device registration is canceled A deletion information generating unit that generates deletion information indicating that the registration of the terminal device has been deleted, and the acquisition information transmitting unit is separate from the information acquired by the information acquisition unit, The deletion information is transmitted to the wired side wireless path toward the wired / wireless communication apparatus, and the registration is deleted from the wireless path information of the other apparatus with respect to another apparatus on the wired side wireless path. Information about terminal devices Characterized in that to remove.

Further, an information transmission apparatus according to the present invention is on the wired side wireless path , an information generation unit that generates information to be transmitted, a generation information transmission unit that transmits information generated by the information generation unit, The relay device registration unit that registers the relay device that acquires and relays the information transmitted by the generated information transmission unit, and the relay device registered in the relay device registration unit and the relay device convey information. Identification information for identifying a route information storage unit that stores route information associated with the terminal device capable of being stored as the wireless route information, and the relay device registered in the relay device registration unit. It includes an identification information implant to be included in the information generation unit generates, and the information that the generation information transmission unit transmits to the relay apparatus registered in the relay device registration is relayed, the information transmission Location further comprises a peripheral information acquisition unit that acquires the deletion information that the relay device registering unit the relay device registered in sent, when the deletion information acquisition unit acquires the peripheral information, the It is preferable that information corresponding to the erasure information is deleted from the route information stored in the route information storage unit.

Further, the present invention is an information transmission device , wherein an information generation unit that generates information to be transmitted, a generation information transmission unit that transmits information generated by the information generation unit, and the generation information transmission unit A relay device that acquires and transmits the transmitted information and has a means for registering a device that is a transmission destination of information transmitted by the relay device; and a relay device registration unit that registers the relay device, and the relay device registration A route information storage unit for storing route information in which the relay device registered in the unit and a terminal device to which the relay device can transmit information are associated, and the registration in the relay device registration unit An identification information injection unit that includes identification information for identifying the relay device in information generated by the information generation unit, and the generation information transmission unit transmits the relay device registered in the relay device registration unit to the relay device Feelings Was relay transmission, the relay device is a device for establishing a radio path for hardwired wired / wireless terminal device to the wired communication network, the registration of the relay device to send the information to the transmission device When it is deleted, it transmits the deletion information indicating that to the wired / wireless communication path toward the wired / wireless communication apparatus, and the information transmitting apparatus is on the wired side wireless path, and the relay apparatus registration unit comprises a peripheral information acquisition unit that acquires the deletion information that the relay device registered sent, when the deletion information acquisition unit acquires the peripheral information, the route information in which the route information storage unit stores Among them, the information corresponding to the erasure information is deleted.

  In the information transmission device according to the present invention, the erasure information includes relay device identification information for identifying the relay device that has transmitted the erasure information, and the information transmission device stores the route information storage unit. In the route information, it is preferable that information regarding association of the relay device identified by the relay device identification information included in the erasure information is deleted.

  In the information transmission device according to the present invention, the erasure information includes device designation information that designates either the relay device or the terminal device associated in the route information, and the information transmission It is preferable that the apparatus is configured to delete information on the association of the apparatuses specified by the apparatus designation information from among the path information stored in the path information storage unit.

In the information transmission device according to the present invention, the generation information transmission unit transmits the erasure information acquired by the erasure information acquisition unit to the wired wireless path separately from the information generated by the information generation unit. It is preferable to do.

  It is preferable that a communication system is configured by including the information transmission device, the relay device, and the terminal device.

  According to the present invention, it is possible to establish a wireless communication path that does not hinder wireless communication.

  FIG. 1 shows a configuration of a communication system 1 according to an embodiment of the present invention. A solid line in FIG. 1 indicates connection by wired communication, and a broken line indicates connection by wireless communication. The communication system 1 includes information processing terminal devices T1 to Tp, wired communication networks 100a and 100b, and relay devices A1 to Aq (p and q are arbitrary natural numbers). The information processing terminal device Tg is connected to the wired communication network 100a, and the information processing terminal device Th is connected to the wired communication network 100b. The relay device Ai is connected to the wired communication network 100a, and the relay device Aj is connected to the wired communication network 100b (g and h are different natural numbers from 1 to p, i and j are different from 1 to q, respectively. Any natural number up to). Further, the information processing terminal devices T1 to Tp excluding the relay devices A1 to Aq and the information processing terminal devices Tg and Th establish a wireless communication network. Here, the case where there are two wired communication networks is taken, but any number of wired communication networks can be provided. In addition, the number of relay devices A1 to Aq that are wired to the wired communication networks 100a and 100b can be arbitrarily set.

  FIG. 2 shows a configuration of relay device A (any one of relay devices A1 to Aq). The relay device A includes an antenna 10, a connection selection unit 12, a transmission / reception unit 14, a communication network establishment processing unit 16, a communication destination device selection unit 18, a communication destination device storage unit 20, a path analysis unit 22, a path device storage unit 24, a relay The blocking unit 26, the relay information generating unit 28, the own address storage unit 30, and the registration monitoring unit 38 are configured.

  The connection selection unit 12 selects whether the transmission / reception unit 14 is connected to the antenna 10, is connected to the wired communication network 100, or is connected to both the antenna 10 and the wired communication network 100. This selection is performed when the relay device A is installed.

  When the transmission / reception unit 14 is connected to the antenna 10, the transmission / reception unit 14 receives a radio signal including packet information via the antenna 10 and the connection selection unit 12. Here, packet information refers to information having a limited amount of information as one information unit. In FIG. 2, the path of packet information is indicated by a solid line, and the path of other information is indicated by a broken line. The transmission / reception unit 14 extracts packet information from the received signal received via the antenna 10 and the connection selection unit 12, and establishes a communication network establishment processing unit 16, a communication destination device selection unit 18, a route analysis unit 22, or a relay blocking unit 26. Further, the transmission / reception unit 14 converts packet information input from the communication network establishment processing unit 16 or the relay information generation unit 28 into a radio signal, and transmits the radio signal via the connection selection unit 12 and the antenna 10.

  When the transmission / reception unit 14 is connected to the wired communication network 100, the transmission / reception unit 14 receives a signal from the wired communication network 100 via the connection selection unit 12 and transmits a signal to the wired communication network 100 via the connection selection unit 12. Send.

  FIG. 3 shows the configuration of the information processing terminal device T (any one of the information processing terminal devices T1 to Tp). In FIG. 3, the path of packet information is indicated by a solid line, and the path of other information is indicated by a broken line. The information processing terminal device T includes an antenna 10, a connection selection unit 12, a transmission / reception unit 14, a communication network establishment processing unit 16, a communication destination device selection unit 18, a communication destination device storage unit 20, a path analysis unit 22, and a path device storage unit 24. A destination confirmation unit 32, an information acquisition unit 34, a transmission information generation unit 36, a self address storage unit 30, and a registration monitoring unit 38. The same components as those of the relay device A are denoted by the same reference numerals, and the description will be simplified in the following description.

Processing performed by each component included in the relay device A and the information processing terminal device T will be described together with processing of the communication system 1.
(1) Wireless communication network establishment processing A wireless communication network is established, and the wireless communication network is further connected to the wired communication network 100 (in FIG. 1, the wired communication network via the relay device A (relay device Ai and relay device Aj in FIG. 1)). 100a and the wired communication network 100b), a wireless communication network establishment process is performed between the relay devices A1 to Aq of the communication system 1. Here, the wireless communication network between the relay devices A1 to Aq is established. Each of the relay devices A1 to Aq selects a communication destination device, and each of the relay devices A1 to Aq is assigned to the communication destination device. That the stored address is stored. The wireless communication network establishment process is executed according to the following processes (a) to (g).
(A) Acquisition of Investigation Request Packet Information The transmission / reception unit 14 of the relay device A acquires the investigation request packet information transmitted from the other relay device A via the antenna 10 and the connection selection unit 12. The investigation request packet information is information transmitted from another relay apparatus A for investigation on information transmission quality and the like.

  FIG. 4A shows the configuration of the survey request packet information. The survey request packet information includes a survey request packet identifier indicating that the packet information is survey request packet information, and a sender address that is the address of the relay apparatus A that has transmitted the packet. FIG. 4B shows an example of investigation request packet information transmitted by the relay device Aa whose sending address is Aa.

When the transmission / reception unit 14 recognizes that the survey request packet information has been acquired based on the survey request packet identifier, the transmission / reception unit 14 measures the electric field strength of the signal including the survey request packet information and inputs the value to the communication network establishment processing unit 16. . Further, the survey request packet information is input to the communication network establishment processing unit 16.
(B) Generation and transmission of response packet information When the communication network establishment processing unit 16 recognizes that the survey request packet information has been acquired by the survey request packet identifier, the response to be acquired by the relay device A that has transmitted the survey request packet information Generate packet information.

  FIG. 4C shows the structure of response packet information. The response packet information includes a response packet identifier, a sender address, a receiver address, transmission quality information, and a wired connection presence / absence identifier. The response packet identifier indicates that the packet information is response packet information. The sending side address indicates the address of the relay apparatus A that transmits the response packet information. The receiving side address indicates the address of the relay apparatus A from which the response packet information should be acquired. The transmission quality information is information used as an index of the information transmission quality of communication with the relay apparatus A that has transmitted the survey request packet information, and indicates the electric field strength of the signal including the survey request packet information. The wired connection presence / absence identifier indicates whether or not the relay apparatus A that transmits the response packet information is wired to the wired communication network 100.

  The communication network establishment processing unit 16 describes the own address read from the own address storage unit 30 that stores the address assigned to the relay device A in the response packet information as the sending side address. In addition, the sender address included in the survey request packet information acquired in the process (a) is described in the response packet information as a receiver address.

  In addition, the communication network establishment processing unit 16 acquires the value of the electric field strength of the signal including the investigation request packet information from the transmission / reception unit 14 and describes it in the response packet information as transmission quality information. Further, the communication network establishment processing unit 16 describes information on whether or not the relay device A is connected to the wired communication network 100 in the response packet information as a wired connection presence / absence identifier.

  FIG. 4D shows an example of response packet information generated by the communication network establishment processing unit 16 of the relay device Ab whose address is Ab. This response packet information should be acquired by the relay device Aa that has transmitted the investigation request packet information shown in FIG. “Ab”, “Aa”, [−58], and “Yes” are described as the sender address, receiver address, transmission quality information, and wired connection presence / absence identifier, respectively.

The communication network establishment processing unit 16 inputs the response packet information generated in this way to the transmission / reception unit 14. The transmission / reception unit 14 converts the response packet information into a radio signal and transmits it through the connection selection unit 12 and the antenna 10.
(C) Transmission of Investigation Request Packet Information The communication network establishment processing unit 16 acquires investigation request packet information transmitted by another relay apparatus A, and generates investigation request packet information and inputs it to the transmission / reception unit 14. The transmission / reception unit 14 converts the survey request packet information into a radio signal and transmits it through the connection selection unit 12 and the antenna 10.
(D) Selection of Communication Destination Device Response packet information is transmitted from the other relay device A that has acquired the survey request packet information transmitted by the process (c). The communication destination device selection unit 18 acquires the transmitted response packet information via the antenna 10, the connection selection unit 12, and the transmission / reception unit 14. Whether or not the acquired packet information is response packet information is determined based on the response packet identifier. The communication destination device selection unit 18 compares the receiving address included in the response packet information with the own address read from the own address storage unit 30, and when they match, the temporary storage unit (see FIG. (Not shown). Further, when the receiving address included in the acquired response packet information does not match the own address read from the own address storage unit 30, the response packet information is deleted by making it non-information or the like.

  The communication destination device selection unit 18 acquires a plurality of response packet information for the plurality of investigation request packet information transmitted by the communication network establishment processing unit 16, and stores the acquired response packet information in a temporary storage unit. Then, M or less (M is an integer of 1 or more) relay devices A are selected as communication destination devices based on information included in the plurality of response packet information stored in the temporary storage unit.

  It is preferable to select the communication destination device based on the transmission quality information and the wired connection presence / absence identifier included in the response packet information. For example, the priority order such as preferentially selecting the relay apparatus A having good transmission quality or preferentially selecting the relay apparatus A having a wired connection with the wired communication network 100 is defined, and based on the priority order. To select the communication destination device.

The communication destination device selection unit 18 causes the communication destination device storage unit 20 to store communication destination device registration information in which the presence or absence of a wired communication network connection is associated with each address of the relay device A selected as the communication destination device.
(E) Transmission of selection notification packet information When the communication destination device selection unit 18 selects a communication destination device, the communication network establishment processing unit 16 generates selection notification packet information to be acquired by the relay device A selected as the communication destination device. Then, the data is transmitted via the transmission / reception unit 14, the connection selection unit 12, and the antenna 10. FIG. 4E shows the configuration of selection notification packet information. The selection notification packet information includes a selection notification packet identifier, a sending address, a receiving address, and a wired connection presence / absence identifier.

The communication network establishment processing unit 16 describes the own address acquired from the own address storage unit 30 as the sending address. In addition, the address of the relay device A selected by the communication destination device selection unit 18 is described in the receiving address. Then, information indicating whether or not the relay device A including the communication network establishment processing unit 16 is connected to the wired communication network 100 is described in the wired connection presence / absence identifier. The communication network establishment processing unit 16 transmits the generated selection notification packet information via the transmission / reception unit 14, the connection selection unit 12, and the antenna 10.
(F) Acquisition of Selection Notification Packet Information The communication destination device selection unit 18 acquires selection notification packet information transmitted from another relay device A via the antenna 10, the connection selection unit 12, and the transmission / reception unit 14. Whether or not the acquired packet information is selection notification packet information is determined based on the selection notification packet identifier.
(G) Additional Registration to Communication Destination Device Registration Information The communication destination device selection unit 18 compares the receiving address included in the selection notification packet information with the own address read from the own address storage unit 30, and when they match, The sending address and the wired connection presence / absence identifier are extracted and additionally registered in the communication destination device registration information stored in the communication destination device storage unit 20. Further, when the receiving address included in the acquired selection notification packet information does not match the address read from the own address storage unit 30, the response packet information is deleted by making it non-information or the like.

  In each of the relay devices A1 to Aq, the processes (a) to (g) are repeated. As a result, the address of the relay device A as the communication destination device is stored in the communication destination device storage unit 20 included in each of the relay devices A1 to Aq, and a wireless communication network between the relay devices A1 to Aq is established.

Here, the response packet information includes a response packet identifier, a sender address, a receiver address, transmission quality information, and a wired connection presence / absence identifier, but various other information can be included. For example, the communication destination device registration information stored in the communication destination device storage unit 20 and the relay device A wired to the wired communication network 100 in the course of repeating the above (a) to (g). The number of relays can be included. As a result, the communication network established in the communication system 1, that is, the information regarding the selection relationship of the communication destination devices of the plurality of relay devices A is shared by the plurality of relay devices A. Each relay device A determines whether the selected communication destination device establishes a communication path on the side toward the wired communication network 100 or establishes a communication route on the side away from the wired communication network 100. Can be recognized. In the following description, the relay device A that establishes a communication path on the side toward the wired communication network 100 is referred to as a wired communication network side relay device.
(2) Terminal communication network establishment process In the above-described wireless communication network establishment process, a process of selecting a counterpart of wireless communication between the relay apparatuses A1 to Aq is performed. In the communication system 1, together with the wireless communication network establishment process, a communication network between the relay device A in which the transmission / reception unit 14 is connected to the antenna 10 and the information processing terminal device T in which the transmission / reception unit 14 is connected to the antenna 10. A terminal communication network establishment process for establishing the communication is performed.

  In the terminal communication network establishment process, similar to the wireless communication network establishment process, the same processes as (a) to (g) are repeated in both the relay device A and the information processing terminal device T. However, in this processing, the address of the information processing terminal device T wired to the wired communication network 100 is suffixed with “(L)” and the information processing terminal device wirelessly connected to the wireless communication network. Differentiated from T address.

  The establishment of a communication network between the information processing terminal device T wired to the wired communication network 100 and the relay device A wired to the wired communication network 100 is realized by a known system such as a wired LAN system. Therefore, the description is omitted here.

  FIG. 5 shows an example of communication destination device registration information stored in the communication destination device storage unit 20 of the relay device A by the above-described wireless communication network establishment processing and terminal communication network establishment processing. In this example, the relay devices Aγ, Aα, Aη, Aξ whose addresses are “Aγ”, “Aα”, “Aη”, “Aξ”, respectively, and the addresses “Tσ”, “Tα (L)”, “ The information processing terminal devices Tσ, Tα, and Tβ that are “Tβ” are selected as communication destination devices, and the presence / absence of each wired communication network connection is “present”, “none”, “none”, “none”, “none” ”,“ Yes ”, and“ No ”. In the area labeled “wired side”, a code indicating whether or not the relay device A is a wired communication network side relay device is described. A symbol “◯” indicates that the relay device is on the wired communication network side, and a symbol “X” indicates that the relay device is not on the wired communication network side. The communication destination device registration information in FIG. 5 indicates that the relay device Aγ is a wired communication network side relay device. The relay devices Aγ, Aα, Aη, Aξ are devices selected by the wireless communication network establishment process, and the information processing terminal devices Tσ, Tα, Tβ are devices selected by the terminal communication network establishment processing. M represents the upper limit of the number of devices selected by the wireless communication network establishment process, and N represents the upper limit of the number of devices selected by the terminal communication network establishment process.

In this way, a communication network including the wired communication network 100, the relay device A, and the information processing terminal device T is established. As an example, as shown in FIG. 6, a communication system 1a including relay devices A1 to A3 and information processing terminal devices T1 to T3 is taken up. The solid line in FIG. 6 indicates a communication network by wired communication, and the broken line indicates a communication network by wireless communication. A wireless communication network establishment process is executed between the relay devices A1, A2, and A3. FIG. 6 shows a case where relay devices A1 and A2 select each other as a communication destination device and relay devices A2 and A3 select each other as a communication destination device as a result of the execution of the wireless communication network establishment process. Further, a terminal communication network establishment process is executed between the information processing terminals T2 and T3 and the relay devices A1 to A3. FIG. 6 shows that, as a result of the terminal communication network establishment process being executed, relay device A2 and information processing terminal device T2 select each other as a communication destination device, and relay device A3 and information processing terminal device T3 each other as a communication destination device. Indicates the case of selection. At this time, the communication destination device registration information stored in the communication destination device storage unit 20 included in the relay devices A1 to A3 is as shown in FIGS. 7A1 to 7A3, respectively. The communication destination device registration information stored in the communication destination device storage unit 20 included in the information processing terminal devices T1 to T3 is as shown in FIG. 7 (T1) to FIG. 7 (T3), respectively. The relay device A2 is the relay device A1, the relay device A3 is the relay device A2, the information processing terminal device T2 is the relay device A2, and the information processing terminal device T3 is the relay device A3.
(3) Transmission / reception of data packet information Next, processing in the communication system 1 for transmitting / receiving data packet information including information data such as documents, images, sounds and programs between the information processing terminal devices T1 to Tp will be described. To do.

  FIG. 8 shows the configuration of data packet information handled by the communication system 1. The data packet information includes a transmission source terminal address, a destination terminal address, a transmission device address, a reception device address, a relay header, and information data.

  The transmission source terminal address is the address of the information processing terminal device T that is a source for transmitting data packet information, and the destination terminal address is the address of the information processing terminal device T that is the destination of the data packet information. The transmission device address is an address of a device that transmits data packet information, and the reception device address is an address for the device that has received the data packet information to determine whether or not to acquire it. The relay header is configured to include the relay count limit information and the previous relay device address, and includes information for controlling transmission and reception of data packet information in the communication system 1.

  Processing in which the information processing terminal device T transmits data packet information will be described with reference to FIG. Here, a case where the transmission / reception unit 14 is connected to the antenna 10 by the connection selection unit 12 will be described. However, when the transmission / reception unit 14 is connected to the wired communication network 100 by the connection selection unit 12, or Even when the connection selection unit 12 is connected to both the antenna 10 and the wired communication network 100, the same processing can be executed because only the medium for transmitting and receiving data packet information is different.

  The transmission information generation unit 36 of the information processing terminal device T generates data packet information. The transmission information generation unit 36 reads the own address from the own address storage unit 30 and describes the own address in the data packet information as the transmission source terminal address and the transmission device address. Further, the address of the information processing terminal device T as the destination is described in the data packet information as the destination terminal address. Further, the transmission information generation unit 36 refers to the route device registration information stored in the route device storage unit 24 and registers the information processing terminal device T as a destination and the corresponding relay device A in the route device registration information. Check whether it is done. If it is registered, the address of the relay device A is acquired and described as the receiving device address in the data packet information.

  Here, the route device registration information refers to the address of the information processing terminal device T that is the destination, and the relay device A suitable for performing relay transmission when transmitting data packet information to the information processing terminal device T. The information is associated with the address (when the information processing terminal device T as the destination is selected as the communication destination device, the information processing terminal device T is associated). For example, in the route device registration information shown in FIG. 9A, the addresses are respectively set for the information processing terminal devices Tγ, Tα, and Tη whose addresses are “Tγ”, “Tα (L)”, and “Tη”. The relay devices Aσ, Aα, and Aβ that are “Aσ”, “Aα”, and “Aβ” are associated with each other. When the destination is the information processing terminal device Tγ, the relay device Aσ may be the receiving device address. The route device registration information is generated by a route device registration process performed by the route analysis unit 22, and details of the specific process will be described later.

  If the information processing terminal device T as the destination and the corresponding relay device A are not registered in the route device registration information, the transmission information generation unit 36 uses the receiving device broadcast address as the receiving device address to receive the data packet information. Describe in. The receiving device broadcast address is an address that is considered to be the same as the address assigned to each of the relay devices A1 to Aq constituting the communication system 1.

  The transmission information generation unit 36 describes the relay count information with the relay count set to 0 in the relay header. Also, here, there is no need to describe particularly meaningful information in the relay device address one step before the relay header, but the data packet information is versatile (the device receiving the data packet information performs application processing, etc.) You can also write your own address to have Further, the transmission information generation unit 36 includes information data such as documents, images, sounds, and programs in the data packet information.

  The transmission information generation unit 36 transmits the data packet information generated in this way via the transmission / reception unit 14, the connection selection unit 12, and the antenna 10.

  Next, processing in which the information processing terminal device T receives data packet information will be described with reference to FIG. The destination confirmation unit 32 of the information processing terminal device T acquires data packet information via the antenna 10, the connection selection unit 12, and the transmission / reception unit 14. Then, the destination terminal address included in the data packet information is extracted, and the own address read from the own address storage unit 30 is compared. The destination confirmation unit 32 inputs the data packet information to the information acquisition unit 34 when the destination terminal address matches its own address, and deletes the acquired data packet information by making it non-information, etc. To do.

  The destination confirmation unit 32 further extracts the previous-stage relay device address included in the relay header of the data packet information, and compares it with the own address read from the own address storage unit 30. If the next-stage relay device address matches its own address, the acquired data packet information is deleted by making it non-information or the like. Further, when the address confirmation unit 32 deletes the acquired data packet information when the next-stage relay device address matches its own address, the destination confirmation unit 32 sends packet deletion information to that effect to the path analysis unit 22. Output. The packet deletion information is used in a route device registration process described later.

  If the destination terminal address is a destination terminal broadcast address, which will be described later, the destination confirmation unit 32 executes the processing assuming that the destination terminal broadcast address matches the own address.

  The information acquisition unit 34 extracts and acquires information data from the data packet information input from the destination confirmation unit 32.

  As described above, in the information processing terminal device T that has received the data packet information, the data packet information whose destination terminal address does not match its own address is made non-information, and the data packet information whose destination terminal address matches its own address Information data is acquired. As a result, the data packet information is acquired by the information processing terminal device T designated as the destination in the information processing terminal device T that is the source for transmitting the data packet information.

  Next, processing in which relay device A receives and relays data packet information will be described with reference to FIG. Here, a case where the transmission / reception unit 14 is connected to the antenna 10 by the connection selection unit 12 will be described. However, when the transmission / reception unit 14 is connected to the wired communication network 100 by the connection selection unit 12, or The same processing can be executed when the connection selection unit 12 is connected to both the antenna 10 and the wired communication network 100.

  The relay blocking unit 26 acquires data packet information via the antenna 10, the connection selection unit 12, and the transmission / reception unit 14. Then, the receiving device address included in the data packet information is extracted and compared with the own address read from the own address storage unit 30. Here, when the receiving device address is a receiving device broadcast address, it is assumed that the receiving device address matches the own address. If the extracted receiving device address does not match its own address, the relay blocking unit 26 deletes the acquired data packet information by making it non-information or the like.

  If the extracted receiving device address matches the own address, the relay number information included in the relay header of the data packet information is extracted and compared with a predetermined relay limit number. When the relay count indicated by the relay count information exceeds the relay limit count, the acquired data packet information is deleted, for example, by eliminating the information.

  If the relay count indicated by the relay count information is less than or equal to the relay limit count, the relay blocking section 26 further extracts the previous-stage relay device address included in the relay header of the data packet information and reads the self-address read from the self-address storage section 30. Compare with address. If the next-stage relay device address matches its own address, the acquired data packet information is deleted by making it non-information or the like. Further, the relay blocking unit 26 deletes the acquired data packet information when the relay count indicated by the relay count information is equal to or less than the relay limit count or when the previous relay device address matches its own address. Then, packet deletion information for informing the fact is output to the route analysis unit 22.

  In this way, the data packet information in which the receiving device address and the own address do not match, the data packet information in which the number of relays exceeds the relay limit number, and the data packet information in which the first-stage relay device address and the own address match are the relay blocking unit. It is deleted at 26. The data packet information that has not been deleted by the relay blocking unit 26 is input to the relay information generating unit 28.

  The relay information generation unit 28 rewrites the transmission device address, the reception device address, and the relay header included in the data packet information input from the relay prevention unit 26 for relay transmission. The relay information generation unit 28 describes the transmission device address included in the input data packet information as the relay device address one step before the relay header. Further, as the relay header relay count information, relay count information in which the relay count indicated by the relay header relay count information included in the input data packet information is increased by 1 is described in the relay header.

  Further, the relay information generation unit 28 overwrites the own address read from the own address storage unit 30 on the transmission device address included in the input data packet information. Further, referring to the route device registration information stored in the route device storage unit 24, the information processing terminal device T to which the destination terminal address included in the input data packet information is assigned, and the corresponding relay device A are Check if it is registered in the route device registration information. When the information processing terminal device T to which the destination terminal address is assigned and the relay device A corresponding to the information processing terminal device T are registered, the address of the relay device A is acquired and the reception included in the input data packet information Overwrite the device address. When the information processing terminal device T to which the destination terminal address is assigned and the corresponding relay device A are not registered, the receiving device broadcast address is added to the receiving device address included in the input data packet information. Overwrite. Note that, even when the destination terminal address included in the input data packet information is a destination terminal broadcast address described later, the receiving apparatus broadcast address is overwritten on the receiving apparatus address included in the input data packet information. To do.

  The relay information generation unit 28 transmits the data packet information in which the transmission device address, the reception device address, and the relay header are changed as described above via the transmission / reception unit 14, the connection selection unit 12, and the antenna 10. Note that the relay information generation unit 28 does not change the transmission source terminal address, the destination terminal address, and the information data.

  As described above, the relay device A makes the information of the data packet whose receiving device address does not match its own address disappear by the processing performed by the relay blocking unit 26, and relays the data packet information whose receiving device address matches its own address. To do. By deleting data packet information whose receiving device address does not match its own address, the relay device A that is not appropriate for relaying data packet information to the destination information processing terminal device T performs relay transmission. Can be avoided.

  In addition, the relay blocking unit 26 deletes the data packet information whose relay count exceeds the relay limit count, thereby causing a loop phenomenon of the data packet information including the receiving device broadcast address and the information processing terminal device T as the destination. It is possible to eliminate the waste that data packet information including a receiving device broadcast address is transmitted via a number of relay devices A in a direction away from the communication device A. In addition, by eliminating data packet information that matches the address of the previous relay device and its own address, it eliminates the waste of relaying data packet information that includes the receiver broadcast address that it sent earlier. can do.

  When the relay device A transmits the data packet information, the data packet information has already been rewritten because the information processing terminal device T as the other relay device A or the destination is rewritten with the content for processing the data packet information. Obtained by the information processing terminal device T as a destination according to the established communication network.

Note that the transmission source terminal address and the transmission device address included in the received data packet information are useful in the route device registration process described below.
(4) Route Device Registration Process In the communication system 1, the data packet information is transmitted and received, and the route analysis unit 22 included in the relay device A and the information processing terminal device T generates the route device registration information, and the route device storage unit The route device registration process to be stored in 24 is performed. Here, the route device registration process performed by the relay device A will be described, but the route device registration process performed by the information processing terminal device T is the same as that performed by the relay device A, and thus the description thereof is omitted. Although the case where the transmission / reception unit 14 is connected to the antenna 10 by the connection selection unit 12 will be described here, the transmission / reception unit 14 is connected to the wired communication network 100 by the connection selection unit 12, or the transmission / reception unit The same processing can be executed when 14 is connected to both the antenna 10 and the wired communication network 100 by the connection selection unit 12.

  The path analysis unit 22 acquires data packet information via the antenna 10, the connection selection unit 12, and the transmission / reception unit 14. Then, the transmission source terminal address and the transmission device address are extracted from the acquired data packet information. The path analysis unit 22 refers to the communication destination device storage unit 20 and confirms whether or not the extracted transmission device address is registered in the communication destination device registration information. The path analysis unit 22 further checks whether packet deletion information based on the acquired data packet information is output from the relay blocking unit 26. When the transmission device address extracted from the acquired data packet information is registered in the communication destination device registration information, and when packet deletion information is not output, the extracted transmission source terminal address and transmission device address are The information is registered in the route device registration information in association with each other, and the content is stored in the route device storage unit 24.

  On the other hand, when the transmission device address is not registered in the communication destination device registration information, or when packet deletion information is output, the route device that associates the extracted transmission source terminal address with the transmission device address The process of registering in the registration information and the process of storing the contents in the route device storage unit 24 are not performed.

  In addition, the path device storage unit 24 deletes a plurality of pieces of information in which the transmission source terminal address and the transmission device address stored in this way are associated with each other and is not re-registered within a predetermined time, and registers the path device. Unregister from information.

  The transmission source terminal address and the transmission device address included in the same data packet information are the data packet information transmitted from the information processing terminal device T to which the transmission source terminal address is assigned, and the relay to which the transmission device address is assigned. It means that it was transmitted via the device A. Conversely, this also means that a communication network to the information processing terminal device T to which the transmission source terminal address is assigned is established including the relay device A to which the transmission device address is assigned. That is, when the destination is the information processing terminal device T to which the transmission source terminal address is assigned, it can be said that it is preferable to cause the relay device A to which the transmission device address is assigned to perform relay transmission.

  Note that checking whether the extracted transmission device address is registered in the communication destination device registration information avoids registering the relay device A that is not selected as the communication destination device in the route device registration information. Because. Also, whether or not the packet deletion information based on the acquired data packet information is output from the relay blocking unit 26 is determined by including the data packet information causing the loop phenomenon and the receiver broadcast address. This is to prevent an erroneous communication path from being formed by registering information based on data packet information transmitted by itself in the path device registration information.

  By executing the route device registration process, a limited number of relay devices A acquire data packet information, so that the same information data of the same number of relay devices A can be obtained. It is possible to reduce the frequency of occurrence of a loop phenomenon in which transmission and reception are repeated.

  In addition, by deleting a plurality of information stored in the route device storage unit 24 that associates the address of the information processing terminal device T with the address of the relay device A that is not re-registered within a predetermined time. The amount of information to be stored in the route device storage unit 24 is reduced. The information processing terminal device T related to information that is not re-registered within a predetermined time often loses communication because it moves away from the relay devices A1 to Aq due to movement or the like, or is powered off. Therefore, if the time from the storage to the deletion is sufficiently long, no problem occurs even if the information about the information processing terminal device T is deleted from the route device storage unit 24.

  Furthermore, even when the information processing terminal device T moves and the communication destination device selected by the information processing terminal device T is changed by the terminal communication network establishment process described in (2) above, the information processing terminal device When T transmits the data packet information, new route device registration information is stored in the route device storage unit 24 of the relay device A that has received the data packet information.

  As an example, a case where data packet information is transmitted from the information processing terminal device T1 to the information processing terminal device T3 when a communication network as shown in FIG. 6 is established will be described. In this case, data packet information as shown in FIG. 9B is transmitted from the relay device A1 to the relay device A2. The route analysis unit 22 included in the relay device A2 extracts the transmission source terminal address T1 (L) and the transmission device address A1 from the data packet information. Now, communication destination device registration information as shown in FIG. 7A2 is stored in the communication destination device storage unit 20 of the relay device A2. As can be seen from FIG. 7A2, since the address A1 described as the transmission device address is registered in the communication destination device registration information, the path analysis unit 22 associates the address T1 (L) with the address A1. The route device registration information is registered, and the contents are added to the route device storage unit 24 and stored. For example, when the route device registration information as shown in FIG. 9A is stored in the route device storage unit 24, the new route device registration information is as shown in FIG. 9C.

In the communication system 1, by repeating transmission / reception of data packet information, the route device in which new information is registered in the route device storage unit 24 included in each of the relay devices A1 to Aq and the information processing terminal devices T1 to Tp. Registration information is memorized. When the communication network is established as shown in FIG. 6, the route device registration information stored in the route device storage unit 24 of the relay devices A1 to A3 and the information processing terminal devices T1 to T3 is shown in FIG. A1) to FIG. 10 (A3) and the contents shown in FIG. 10 (T1) to FIG. 10 (T3) converge.
(5) Processing for describing receiving device broadcast address as receiving device address As described above, relay information generating unit 28 included in relay device A and transmission information generating unit 36 included in information processing terminal device T generate data packet information. In the processing to be performed, the route device registration information stored in the route device storage unit 24 is referred to. Then, the address of the relay device A suitable as the communication destination device from which the data packet information is to be acquired is acquired and described as the receiving device address in the data packet information.

  However, since the route device registration process described above is performed in the process of actually transmitting and receiving data packet information, the data packet information is not yet transmitted and received immediately after the communication network is established. The route device registration information has not been generated. In this case, information that associates the address of the information processing terminal device T as the destination with the address of the relay device A is not registered.

  Even if some data packet information is actually transmitted and received and the route device registration process is performed, information in which the address of the information processing terminal device T that is the destination and the address of the relay device A is associated is generated. Not necessarily. This is because the relay device A corresponding to the information processing terminal device T is not registered unless the information processing terminal device T as the destination transmits data packet information in advance.

  Therefore, in the relay information generation unit 28 and the transmission information generation unit 36 according to the present embodiment, when the route device registration information has not been generated yet, or the address of the information processing terminal device T that is the destination of the route device registration information and the relay If the information that associates the address of the device A is not registered, the receiving device broadcast address is described in the data packet information as the receiving device address.

As described above, even if the receiving device broadcast address is described in the data packet information as the receiving device address, the relay blocking unit 26 of the relay device A determines that the receiving device broadcast address matches the own address. Therefore, the data packet information acquired by the relay device A is not deleted. Further, the processing of the relay device A based on the relay header causes the data packet information to be transmitted via a large number of relay devices A in a direction away from the information processing terminal device T as a destination or a loop phenomenon of the data packet information. The problem is avoided.
(6) Broadcast transmission A process when the information processing terminal device T causes the other information processing terminal devices T to acquire the same information data will be described. Here, a case where the transmission / reception unit 14 is connected to the antenna 10 by the connection selection unit 12 will be described. However, when the transmission / reception unit 14 is connected to the wired communication network 100 by the connection selection unit 12, or The same processing can be executed when the connection selection unit 12 is connected to both the antenna 10 and the wired communication network 100.

  The transmission information generation unit 36 included in the information processing terminal device T reads the own address from the own address storage unit 30 and describes it in the data packet information as the transmission source terminal address and the transmission device address. Further, the destination terminal broadcast address is described in the data packet information as the destination terminal address, and the receiving apparatus broadcast address is described as the receiving apparatus address.

  Here, the destination terminal broadcast address is an address considered to be the same as the address assigned to each of the information processing terminal devices T1 to Tp. The receiving device broadcast address is described as the receiving device address of the data packet information, whereas the destination terminal broadcast address is described as the destination terminal address. The receiving device broadcast address is a broadcast address defined between the relay devices A1 to Aq, whereas the destination terminal broadcast address is defined between the information processing terminal devices T1 to Tp. The broadcast address is different.

  The transmission information generation unit 36 describes the relay count information with the relay count set to 0 in the relay header, and includes the information data in the data packet information. In this case, it is not necessary to describe particularly meaningful information in the relay device address immediately before the relay header, but it is also possible to describe its own address in order to make the data packet information versatile.

  The transmission information generation unit 36 transmits the data packet information generated in this way via the transmission / reception unit 14, the connection selection unit 12, and the antenna 10.

  Thus, only one data packet information is transmitted by broadcast transmission that generates and transmits data packet information including the destination terminal broadcast address as the destination terminal address and the receiving device broadcast address as the receiving device address. The data packet information can be acquired by a plurality of information processing terminal devices T.

  Further, the destination terminal broadcast address may be a destination terminal group broadcast address defined for some groups of the relay device A and the information processing terminal device T. For example, the destination terminal group broadcast address G1 is a broadcast address defined for the information processing terminal devices T1 to Tk (k is a natural number less than p), and the destination terminal group broadcast address G2 is the information processing terminal device. The broadcast address is defined for Tk + 1 to Tp. In this case, in order for the information processing terminal device T to cause the information processing terminal devices T1 to Tk to acquire the data packet information, the data packet information including the destination terminal group broadcast address G1 as the destination terminal address is generated and transmitted. In order for the information processing terminal devices Tk + 1 to Tp to acquire data packet information, it is only necessary to generate and transmit data packet information in which the destination terminal group broadcast address G2 is described as the destination terminal address. In either case, the receiving device broadcast address is described in the receiving device address.

  In the destination confirmation unit 32 of the information processing terminal device T, the destination terminal group broadcast address defined in the group to which it belongs is processed as being the same as its own address, so all information processing terminals belonging to the group In the device T, the same data packet information is acquired.

Of course, instead of broadcast transmission, it is also possible to transmit data packet information individually addressed to each of a plurality of other information processing terminal devices T. When the number of information processing terminal devices T as destinations is small, the amount of information that must be processed by the entire communication system 1 is smaller when individually transmitting data packet information than when performing broadcast transmission. is there. Therefore, the information processing terminal device T is configured to determine whether to transmit the data packet information by broadcast transmission or to individually transmit the data packet information based on the number of information processing terminal devices T as destinations. It is preferable.
(7) Relay Terminal Device A relay terminal device AT capable of executing both the processing executed by the relay device A and the processing executed by the information processing terminal device T can be applied to the communication system 1. FIG. 11 shows the configuration of the relay terminal apparatus AT. In the relay terminal device AT, the relay device A is further provided with a destination confirmation unit 32 and an information acquisition unit 34, and the relay information generation unit 28 in the relay device A is replaced with an information generation unit 44. The information generation unit 44 includes a relay information generation unit 28 and a transmission information generation unit 36. In the relay terminal device AT, the data packet information that has not been deleted by the relay blocking unit 26 is input to the information generation unit 44 and the destination confirmation unit 32. It is assumed that the relay information generation unit 28 does not generate data packet information in which the destination terminal address matches its own address. In the following description, it is assumed that the relay terminal apparatus AT also constitutes the communication system 1. The description of the relay device A includes the description of the same components as the relay device A among the components of the relay terminal device AT, and the description of the information processing terminal device T includes the components of the relay terminal device AT. Among them, the explanation about the same information processing terminal device T is included.
(8) Communication destination device exchange processing In the wireless communication network establishment processing and the terminal communication network establishment processing, the relay device A, the information processing terminal device T, and the relay terminal device AT (hereinafter referred to as system configuration device) constituting the communication system 1 ) Repeats the processing described in (1) (a) to (g) above. Then, a communication destination device is selected, and a communication network is established by storing an address assigned to the communication destination device.

  According to the above example, the communication destination device is selected based on the transmission quality information and the wired connection presence / absence identifier included in the response packet information. The transmission quality information changes according to a change in the physical positional relationship due to movement of the system component device or the like, or a change in the propagation state of the radio signal due to the appearance of an obstacle or the like. Accordingly, there is a possibility that the communication destination device that each of the plurality of system configuration devices selects from each other may be changed at any time.

  When the communication destination device is changed, the address stored in the communication destination device storage unit 20 is changed. For example, in the relay device A, the case where the communication destination device registration information shown in FIG. 12A-1 is stored in the communication destination device storage unit 20 will be described. The communication destination device registration information shown in FIG. 12A-1 includes relay devices Aγ and Aα having addresses “Aγ” and “Aα” as communication destination devices, and addresses “Tσ” and “Tα (L ) ”,“ Tβ ”indicates a state in which the information processing terminal devices Tσ, Tα, and Tβ are selected. Here, when it is decided to select the relay device Aφ instead within a predetermined time after the relay device Aα is not selected as the communication destination device, the communication destination device registration stored in the communication destination device storage unit 20 is stored. The information is as shown in FIG. That is, the address Aα of the relay device Aα is deregistered, and the address Aφ of the relay device Aφ is newly registered instead.

  When the address registered in the communication destination device registration information is changed, it is preferable to change the route device registration information stored in the route device storage unit 24. That is, the route device registration information is information in which the address of the information processing terminal device T as the destination is associated with the address of the relay device A, and the address of the relay device A is deregistered from the communication destination device registration information. This is because the corresponding relationship can no longer be applied.

  Therefore, the registration monitoring unit 38 according to the present embodiment monitors the address registered in the communication destination device registration information, and changes the route device registration information stored in the route device storage unit 24 based on the monitoring result. . Specifically, when there is registration cancellation for the communication destination device registration information, when information that associates the address registered with the address information processing terminal device T with the address registered in the route device registration information is registered In this case, the associated information is deregistered from the route device registration information. For example, the case where the routing device registration information shown in FIG. 13A-1 is stored in the relay device A will be described. The route device registration information shown in FIG. 13A-1 has addresses “Aδ” and “Aκ” for the information processing terminal devices Tζ and Tη whose addresses are “Tζ” and “Tη”, respectively. It shows that the relay devices Aδ and Aκ are associated with each other. Here, when the address Aδ of the relay device Aδ is deregistered from the communication destination device registration information, the information that associates the address Aδ of the route device registration information with the address Tζ in FIG. 13A-1 is deleted. Then, the route device registration information is changed as shown in FIG.

  In addition, when there is a registration cancellation for the communication destination device registration information and a new registration within a predetermined time thereafter, information in which the address registered in the route device registration information is associated with the address of the information processing terminal device T Is registered, the newly registered address is overwritten on the unregistered address. For example, a case where the relay device A stores the route device registration information shown in FIG. The route device registration information shown in FIG. 14A-1 has addresses for information processing terminal devices Tξ, Tψ, and Tο whose addresses are “Tξ”, “Tψ (L)”, and “Tο”, respectively. It indicates that the relay devices Aγ, Aα, and Aα that are “Aγ”, “Aα”, and “Aα” are associated with each other. Here, as shown in FIGS. 12A-1 and 12A-2, when the address Aα of the relay device Aα is deregistered, and instead the address Aφ of the relay device Aφ is registered, FIG. The address Aφ of the route device registration information (A-1) is overwritten on the address Aα, and the route device registration information is changed as shown in FIG. 14 (A-2).

  As a more specific example, in the state where the communication network of the communication system 1b is established as shown in FIG. 15A, the relay device A3 is used as the communication destination device as shown in FIG. 15B. A case will be described where the relay device AT3 is selected instead within a predetermined time after the relay device A2 is not selected. In the communication system 1b, a relay device A4, information processing terminal devices T4 and T5, and relay terminal devices AT1, AT2, and AT3 are added to the communication system 1a shown in FIG. In FIG. 15A, the relay device A1 selects the relay device A4 and the relay terminal device AT3 as communication destination devices. The relay device A4 selects the relay device A2 as the communication destination device. The relay device A2 selects the information processing terminal device T2 and the relay device A3 as communication destination devices. The relay device A3 selects the relay terminal device AT1 and the information processing terminal device T3 as communication destination devices. The relay terminal device AT1 selects the relay terminal device AT2 and the information processing terminal device T5 as communication destination devices. The relay terminal device AT2 selects the information processing terminal device T4 as the communication destination device.

  The communication destination device registration information shown in FIG. 12 (A3-1) is first stored in the communication destination device storage unit 20 of the relay device A3. Thereafter, the address A2 is deregistered and the address AT3 is newly registered by the wireless communication network establishment process, so that the communication destination device registration information has the contents as shown in FIG. 12 (A3-2).

  The route device storage section 24 of the relay device A2 initially stores route device registration information as shown in FIG. 13 (A2-1). When the registration monitoring unit 38 of the relay device A2 recognizes that the address A3 has been deregistered from the communication destination device registration information, it associates the address A3 with the address T3 in the route device registration information shown in FIG. 13 (A2-1). Information associated with address A3 and address T4, information associated with address A3 and address T5, information associated with address A3 and address AT1, and information associated with address A3 and address AT2. . As a result, the route device registration information stored in the route device storage unit 24 of the relay device A2 is as shown in FIG. 13 (A2-2).

  On the other hand, the route device storage unit 24 of the relay device A3 initially stores route device registration information as shown in FIG. 14 (A3-1). When the registration monitoring unit 38 recognizes that the communication destination device registration information has been changed from FIG. 12 (A3-1) to FIG. 12 (A3-2), the route device illustrated in FIG. 14 (A3-1). The address AT3 is overwritten on the address A2 in the registration information. As a result, the route device registration information stored in the route device storage unit 24 of the relay device A3 is as shown in FIG. 14 (A3-2).

  The route device registration information of the relay device A3 changed in this way is obtained by directly using the contents registered in the route device registration information for the communication destination device that has been selected first and then canceled. Therefore, at the beginning of the change of the route device registration information, the route device registration information finally converged is not always obtained. In this case, the route device registration information converges to the final content by the route device registration process described in (4) above. However, the relay device A that has been unregistered by the wireless communication network establishment process and the newly registered relay device A are often associated with a condition in which conditions for selection as a communication destination device are close to each other. In most cases, the information processing terminal devices T are the same. That is, when there is a registration cancellation for the communication destination device registration information and a new registration within a predetermined time thereafter, the transmission quality between the relay device A related to the registration cancellation and the relay device A related to the new registration The selection conditions of the communication destination device performed based on the information and the wired connection presence / absence identifier are close to each other. Therefore, even when the route device registration information is changed, the association between the information processing terminal device T and the relay device A is often effective, and finally converges even if the route device registration process is not executed. It can be said that the probability of obtaining the route device registration information is high.

  In addition, although the case where the relay apparatus A executes the communication destination apparatus replacement process has been described here, the information processing terminal apparatus T can also execute the communication destination apparatus replacement process in the same manner.

In the above description, when there is only deregistration with respect to the communication destination device registration information, or when there is deregistration with respect to the communication destination device registration information and new registration within a predetermined time thereafter, the path device memory The process of changing the route device registration information stored in the unit 24 has been described. In the relay device A according to the present embodiment, when there is only deregistration with respect to the communication destination device registration information, a deletion notification packet information transmission process described below is performed.
(9) Deletion notification packet information transmission processing In the deletion notification packet information transmission processing, a certain relay device A deletes part of the route device registration information or all of the route device registration information from another relay device A. This is a process of transmitting deletion notification packet information for prompting. This process is performed when there is a registration deletion in the communication destination device registration information and there is no new registration within a predetermined time thereafter.

  The deletion notification packet information has the same configuration as the data packet information shown in FIG. However, it differs from the data packet information in that the deletion notification packet identifier is included in the information data.

  When the registration monitoring unit 38 recognizes that there is an address that has been deregistered from the communication destination device registration information and no new address has been registered within a predetermined period of time, registration deregistration information and registration indicating that the address has been deleted The deleted address is output to the relay information generation unit 28.

  When the registration cancellation information is output, the relay information generation unit 28 generates deletion notification packet information in which the deletion notification packet identifier is included in the information data. The relay information generation unit 28 describes the deregistered address as the transmission source terminal address of the deletion notification packet information, and describes its own address as the transmission device address of the deletion notification packet information. Further, the relay information generation unit 28 refers to the communication destination device registration information stored in the communication destination device storage unit 20, acquires the address of the relay device on the wired communication network side, and describes it as the destination terminal address and the reception device address. To do. The wired communication network side relay device is associated with the relay device A that is wired to the wired communication network 100 or the information processing terminal device T that is wired to the wired communication network 100 in the route device registration information. It is also possible to select the relay device A that is present. The relay device A that is wired to the wired communication network 100 or the relay device A that is associated with the information processing terminal device T that is wired to the wired communication network 100 communicates toward the wired communication network 100. This is because the route is established. Note that there is no need to describe particularly meaningful information in the transmission source terminal address of the deletion notification packet information, but here, in order to make the deletion notification packet information versatile, an address that has been deregistered is described. .

  The relay information generation unit 28 describes the relay count information with the relay count set to 0 in the relay header. Also, here, there is no need to describe particularly meaningful information in the relay device address one step before the relay header, but it is also possible to describe its own address in order to make the deletion notification packet information versatile. Further, the relay information generation unit 28 includes the deletion notification packet identifier in the data packet information.

  The relay information generation unit 28 transmits the deletion notification packet information generated in this way via the transmission / reception unit 14, the connection selection unit 12, and the antenna 10.

  As a specific example, in a state where a communication network as shown in FIG. 15A is established, as shown in FIG. 15B, the relay device A3 stops selecting the relay device A2 as the communication destination device. Next, a case where the relay device AT3 is selected instead within a predetermined time will be described.

  FIG. 16A-1 shows communication destination device registration information of the relay device A2 when the relay device A3 selects the relay device A2 as the communication destination device. Relay devices A3 and A4 and information processing terminal device T2 are selected as communication destination devices. Among these, the relay apparatus on the wired communication network side is the relay apparatus A4. Immediately after the relay device A3 selects the relay device AT3 as the communication destination device, the information about the address A3 is deleted from the communication destination device registration information of the relay device A2. FIG. 16 (A2 -2).

  Therefore, the relay device A2 has the unregistered address A3, the wired communication network side relay device address A4, its own address A2, and the wired source address, destination address, transmission device address, and reception device address, respectively. Deletion notification packet information as shown in FIG. 17A describing the address A4 of the communication network side relay device is transmitted.

  Next, a process performed by the relay apparatus A on the received deletion notification packet information will be described. When the path analysis unit 22 of the relay apparatus A that has received the deletion notification packet information recognizes that the packet deletion information is not output from the relay blocking unit 26 and that the deletion notification packet identifier is described in the information data. The transmission device address of the deletion notification packet information is extracted.

  The route analysis unit 22 refers to the route device registration information stored in the route device storage unit 24, and whether or not information related to the same address as the transmission device address extracted from the deletion notification packet information is registered. To check. If registered, the information related to the association is deleted from the route device registration information.

  When the relay information generation unit 28 recognizes that the deletion notification packet identifier is described in the information data of the deletion notification packet information output from the relay blocking unit 26, the relay information generation unit 28 replaces the transmission device address of the deletion notification packet information with its own address. The destination terminal address and the receiving device address are replaced with the address of the relay device on the wired communication network side. In addition, the transmission device address included in the deletion notification packet information output from the relay blocking unit 26 is described as the relay device address immediately before the relay header, and is output from the relay blocking unit 26 as relay count information of the relay header. The relay number information is described by increasing the number of relays indicated by the relay number information in the relay header included in the deleted notification packet information. The relay information generation unit 28 transmits the deletion notification packet information in which the address or the like is changed for relay transmission in this way via the transmission / reception unit 14, the connection selection unit 12, and the antenna 10. Since the receiving device address of the deletion notification packet information describes the address of the relay device on the wired communication network side, the deletion notification packet information is relayed and transmitted in the direction of the wired communication network 100 and away from the wired communication network 100. Is prevented from being relayed.

  When the information acquisition unit 34 of the information processing terminal device T that has acquired the deletion notification packet information recognizes that the deletion notification packet identifier is included in the information data of the deletion notification packet information, the information acquisition unit 34 deletes the deletion notification packet information. This is because the deletion notification packet information is not intended to acquire information data at the information processing terminal T. Further, when the deletion notification packet information is acquired by the information processing terminal device T that is the destination by the destination terminal address, the relay transmission is terminated.

  The relay information generation unit 28 of the relay device A transmits the deletion notification packet information when there is no wired communication network side relay device, that is, when the relay device A is connected to the wired communication network 100 by wire. Do not do. In this way, relay transmission of the deletion notification packet information is terminated in the relay device A that is wired to the wired communication network 100.

  As a specific example, in a state where a communication network as shown in FIG. 15A is established, as shown in FIG. 15B, the relay device A3 stops selecting the relay device A2 as the communication destination device. Next, a case where the relay device AT3 is selected instead within a predetermined time will be described. The deletion notification packet information shown in FIG. 17A is transmitted from the relay device A2, and is received by the relay device A4.

  FIG. 18 (A4-1) shows the path device registration information of the relay device A4 in a state where the communication network as shown in FIG. 15 (a) is established. Address T1 (L) and AT3 are associated with address A1, and addresses T2, T3, T4, T5, AT1 and AT2 are associated with address A2. The route analysis unit 22 of the relay device A4 extracts the transmission device address A2 from the deletion notification packet information. The route analysis unit 22 associates the addresses T2, T3, T4, T5, AT1, and AT2 with the address A2 in the route device registration information, so the information that associates the address A2 with the address T2, and the address A2 with the address T3. , Information that associates address A2 and address T4, information that associates address A2 and address T5, information that associates address A2 and address AT1, and information that associates address A2 and address AT2 Is deleted from the path device registration information. As a result, the route device registration information stored in the route device storage unit 24 of the relay device A4 changes from the content shown in FIG. 18 (A4-1) to the content shown in FIG. 18 (A4-2).

  The relay information generation unit 28 of the relay device A4 rewrites the deletion notification packet information as shown in FIG. That is, the transmission device address A2 is replaced with its own address A4, the destination terminal address A4 and the reception device address A4 are replaced with the address A1 of the wired communication network side relay device A1, the number of relays is increased by 1, and the received deletion notification The address A4 described as the transmission device address in the packet information is described as the next-stage relay device address. The relay information generation unit 28 transmits the deletion notification packet information in which the address or the like is changed for relay transmission in this way via the transmission / reception unit 14, the connection selection unit 12, and the antenna 10.

  By such processing, the deletion notification packet information transmitted from the relay device A2 is relay-transmitted by the relay device A4 and acquired by the relay device A1. Further, the relay device A4 and the relay device A1 change the route device registration information by processing according to the deletion notification packet information, and the relay device A1 terminates the relay transmission without relaying the deletion notification packet information.

  When the address of the relay device is deregistered in a certain relay device A by performing the communication destination device exchange process described in (8) above, the relay existing in the communication path on the wired communication network side from the relay device A Information indicating an incorrect correspondence remains in the route device registration information of the device. According to the deletion notification packet information transmission process, it is possible to delete information indicating an erroneous correspondence remaining in the route device registration information in the relay device on the wired communication network side. The deleted portion of the route device registration information is supplemented with information indicating a correct correspondence relationship by executing route notification packet information transmission processing described later and the above-described route device registration processing.

  Note that, here, a configuration has been described in which information related to the association of the same address as the transmission device address extracted from the deletion notification packet information is deleted from the path device registration information, but when the deletion notification packet information is received, It is possible to delete all information included in the route device registration information. Also in this case, new route device registration information is stored in the route device storage unit 24 again by executing a route device registration process and a route notification packet information transmission process described later.

  The system configuration apparatus according to the present embodiment may be configured to transmit deletion notification packet information in which the association deletion address is described in the information data. Here, the association deletion address refers to the address of the information processing terminal device related to the association to be deleted from the path device registration information of the system configuration device that has received the deletion notification packet information. One or more association deletion addresses can be described. Further, among the associations in the route device registration information, the relay device side may be specified, or the information processing terminal device side may be specified. Here, a description will be given assuming that the information processing terminal device side is designated. The structure of the deletion notification packet information in this case is shown in FIG. In addition to the deletion notification packet identifier, association deletion addresses Tα, Tγ, Tξ... Are described in the information data. The route analysis unit 22 of the relay device A that has acquired the deletion notification packet information shown in FIG. 19A deletes information related to the association of the association deletion addresses Tα, Tγ, Tξ... From the route device registration information. To do.

  For example, in the above example, when the deletion notification packet information shown in FIG. 19B is transmitted from the relay apparatus A2 instead of the deletion notification packet information shown in FIG. 17A, the deletion notification packet information is received. The route device registration information of the relay device A4 is the content shown in FIG. 19 (A4-4) instead of the content shown in FIG. 18 (A4-2). That is, since the association deletion address T3 is described in the data information of the deletion notification packet information, it is associated with the association deletion address T3 described in the information data from the route device registration information of the relay device A4. Information is deleted. In this case, the information associated with the transmission device address A2 may be deleted.

  Such a configuration is suitable when there is correspondence information to be surely deleted from the path device registration information of the system configuration device. For example, when a plurality of system configuration devices are always installed in the vicinity, the data information of the deletion notification packet information transmitted by each of the plurality of system configuration devices includes the address of the system configuration device installed in the vicinity. Try to describe. This makes it possible to reliably delete the information related to the association of the group from the route device registration information of the system configuration device that has received the deletion notification packet information, with the plurality of system configuration devices as one group. In addition, this function can also be used for an operation test whether or not the processing after deletion of information related to the association is reliably executed in the design and manufacturing stage of the communication system 1.

  Here, the process of transmitting the deletion notification packet information when there is only address deregistration due to the communication destination apparatus replacement process has been described. In addition to such a case, when the registration of the address has been canceled due to deterioration of communication quality, movement of the information processing terminal device T or the relay device A, power-off of the information processing terminal device T or the relay device A, etc. In addition, the process of transmitting the deletion notification packet information is effective. In this case, if the address where the registration was deleted is described as the association deletion address, the information related to the association of the address where the registration was deleted can be deleted from the path device registration information of the system configuration device.

For example, in the state where the communication network as shown in FIG. 15A is established, when the information processing terminal device T2 moves far from the communication system 1, or the information processing terminal device T2 is powered off and relayed When the device A2 recognizes that the selection of the information processing terminal device T2 as the communication destination device is canceled, the communication destination device registration information of the relay device A2 is changed from FIG. 20 (A2-3) to FIG. It is changed as shown in 4). Even in this case, the relay device A2 transmits the deletion notification packet shown in FIG. 17A or the deletion notification packet information shown in FIG. 19A in which T2 is described as the associated deletion address. In the relay device A4 that has received the deletion notification packet information shown in FIG. 17A, the routing device registration information is changed from the content shown in FIG. 18A4-1 to the content shown in FIG. 18A4-2. In the relay device A4 that receives the deletion notification packet information shown in FIG. 19A in which T2 is described as the association deletion address, the path device registration information is changed from the content shown in FIG. 18 (A4-1). The content is changed to that shown in FIG. 18 (A4-3). In FIG. 18 (A4-2), information related to the association with the address A2 of the relay device is deleted, and in FIG. 18 (A4-3), information related to the association with the address T2 of the information processing terminal device is deleted. Has been.
(10) Route announcement packet information transmission processing The route announcement packet information transmission processing is processing in which a certain system configuration device transmits route announcement packet information for prompting other system configuration devices to update the route device registration information. is there. This process is performed after the process of changing the route device registration information stored in the route device storage unit 24 is executed. As processing for changing the route device registration information, the processing for changing the route device registration information by the communication destination device exchange processing described in (i) (8) (ii) The data packet information described in (4) is added. There is a route device registration process based on. Since the route notification packet information transmission process performed by the information processing terminal device T is the same as that performed by the relay device A (in the relay device A, the relay information generation unit 28 generates the route notification packet information, while the information processing terminal device The difference is that the transmission information generation unit 36 generates the route notification packet information at T.) Here, the route notification packet information transmission processing performed by the relay device A will be described.

  A process of transmitting the route notification packet information when the route device registration information is changed by the communication destination device exchange process will be described. The route notification packet information has the same configuration as the data packet information shown in FIG. However, it differs from the data packet information in that the address of the information processing terminal device T in which the correspondence relationship is registered in the route device registration information is described as the transmission source terminal address, and the route information packet identifier is included in the information data. In the process of transmitting the route notification packet information after the communication destination apparatus exchange process, the address of the information processing terminal apparatus T related to the correspondence that has not been changed by the communication destination apparatus exchange process is described as the transmission source terminal address. Hereinafter, the information processing terminal device T related to the correspondence that has not been changed by the communication destination device replacement process is referred to as a surviving information processing terminal device. When the system component device that transmits the route notification packet information is the relay terminal device AT or the information processing terminal device T, it is also included in the surviving information processing terminal device.

  The relay information generation unit 28 refers to the route device storage unit 24, selects one surviving information processing terminal device, and describes the address of the selected surviving information processing terminal device as the transmission source terminal address of the route notification packet information. Further, the relay information generation unit 28 describes the destination terminal broadcast address as the destination terminal address of the route notification packet information, and describes its own address as the transmission device address of the route notification packet information. Further, the relay information generating unit 28 describes the newly registered address of the relay device A as a receiving device address in the route notification packet information. Note that the address of the relay device on the wired communication network side may be set as the destination terminal address.

  The relay information generation unit 28 describes the relay count information with the relay count set to 0 in the relay header. Further, here, there is no need to describe particularly meaningful information in the relay device address one step before the relay header, but it is also possible to describe its own address in order to make the route broadcast packet information versatile. Further, the relay information generating unit 28 includes the route notification packet identifier in the data packet information.

  The relay information generation unit 28 transmits the route notification packet information generated in this way via the transmission / reception unit 14, the connection selection unit 12, and the antenna 10.

  After transmitting the route notification packet information in this way, the relay information generating unit 28 generates route notification packet information to be transmitted next. That is, the relay information generation unit 28 describes the address of the surviving information processing terminal device different from the surviving information processing terminal device selected earlier as the transmission source terminal address, and transmits the other settings first. Route broadcast packet information that is the same as the broadcast packet information is transmitted. Similarly, the relay information generation unit 28 performs the process of transmitting the route notification packet information for all the surviving information processing terminal devices in the route device registration information.

  The route broadcast packet information transmitted from the relay device A is transmitted to the communication system by the same process as the process of transmitting and receiving the data packet information described in (3) and the process of performing broadcast transmission described in (6). 1 is acquired in the information processing terminal device T constituting 1. In the process in which the route notification packet information is transmitted from the relay device A and acquired by the information processing terminal device T, the system configuration device of the communication system 1 performs the route device by the same process as the route device registration process described in (4) above. Update registration information.

  When the information acquisition unit 34 of the information processing terminal device T that has acquired the route notification packet information recognizes that the information data of the route notification packet information includes the route notification packet identifier, the information acquisition unit 34 deletes the route notification packet information. This is because the route notification packet information is not intended to obtain information data at the information processing terminal T, but is exclusively packet information for causing the system component device of the communication system 1 to execute route device registration processing. .

  The route notification packet information is forcibly describing the address of the surviving information processing terminal device as a transmission source terminal address. As a result, the route device storage unit 24 of the system configuration device of the communication system 1 stores information in which the transmission source terminal address extracted from the route notification packet information and the transmission device address are associated with each other. Renewal is facilitated.

  As a specific example, in a state where a communication network as shown in FIG. 15A is established, as shown in FIG. 15B, the relay device A3 stops selecting the relay device A2 as the communication destination device. Next, the route device registration information of the relay device A2 when the relay device AT3 is selected instead within a predetermined time will be described. The route device registration information of the relay device A2 when the relay device A3 selects the relay device A2 as the communication destination device is as shown in FIG. 13 (A2-1).

  Immediately after the relay device A3 selects the relay device AT3, the route device registration information of the relay device A2 is information in which the address A3 and the address T3 are associated, and the address A3 and the address T4 are associated. Information, information associated with address A3 and address T5, information associated with address A3 and address AT1, and information associated with address A3 and address AT2 are deleted. )become that way.

  In this case, in the relay device A3, the information processing terminal device T or the relay terminal device AT related to the correspondence changed by the communication destination device replacement process is recognized from FIGS. 14A3-1 and A3-2. As shown, the information processing terminal devices T1 and T2. And as recognized from FIG. 14 (A3-1) and (A3-2), the surviving information processing terminal devices are the information processing terminal devices T3, T4, and T5, and the relay terminal devices AT1 and AT2. . Therefore, after the relay device A3 stops selecting the relay device A2 as the communication destination device, after the relay device AT3 is selected instead within a predetermined time, the relay device A3 starts to select FIG. ) To (e) are individually transmitted. That is, the route broadcast packet information shown in (a) to (e) in which “T3”, “T4”, “T5],“ AT1 ”, and“ AT2 ”are respectively described in the transmission source terminal address is transmitted. Become.

  The route notification packet information is rewritten and transmitted in the relay device A4 as shown in FIGS. The relay device A2 that has received this route notification packet information performs route device registration processing, and updates the route device registration information as shown in FIG. 13 (A2-3). That is, the transmission source terminal addresses T3, T4, T5, AT1, and AT2 are associated with the transmission device address A4 of the received route notification packet information and added to the route device registration information.

  Next, a process of transmitting route notification packet information when a route device registration process based on data packet information is executed will be described. When a new correspondence relationship is registered in the route device registration information in the route device storage unit 24, the relay information generation unit 28 sets the address of the information processing terminal device T related to the correspondence relationship as the transmission source terminal address of the route notification packet information. Describe as Further, the relay information generation unit 28 describes the destination terminal broadcast address as the destination terminal address of the route notification packet information, and describes its own address as the transmission device address of the route notification packet information. Further, the relay information generating unit 28 describes the receiving device broadcast address as the receiving device address in the route broadcast packet information.

  The relay information generation unit 28 describes the relay count information with the relay count set to 0 in the relay header. Further, here, there is no need to describe particularly meaningful information in the relay device address one step before the relay header, but it is also possible to describe its own address in order to make the route broadcast packet information versatile. Further, the relay information generating unit 28 includes the route notification packet identifier in the data packet information. The relay information generation unit 28 transmits the route notification packet information generated in this way via the transmission / reception unit 14, the connection selection unit 12, and the antenna 10. The route device registration information is updated in the system configuration device that has received the route notification packet information by the same processing as the processing for transmitting the route notification packet information after the communication destination device exchange processing.

  As a specific example, when the route device registration information of the relay device A3 has the contents as shown in FIG. 23 (A3-3), information associated with the address “AT1” and the address “T6” is newly added. Then, the case where it is changed as shown in FIG. 23 (A3-4) will be described. The relay device A3 transmits route notification packet information as shown in FIG. That is, route broadcast packet information in which “T6” is described in the transmission source terminal address is transmitted. The system configuration device that has received this route notification packet information associates the transmission source terminal address “T6” with the transmission device address of the received route notification packet information and adds it to the route device registration information.

  Note that the formats of communication destination device registration information, route device registration information, data packet information, deletion notification packet information, route notification packet information, and the like described above are not limited to the configurations shown in the drawings. That is, various formats are possible as long as they include information elements constituting these pieces of information.

It is a figure which shows the structure of the communication system which concerns on embodiment of this invention. It is a figure which shows the structure of the relay apparatus which concerns on embodiment of this invention. It is a figure which shows the structure of the information processing terminal device which concerns on embodiment of this invention. It is a figure which shows the structure of the packet information transmitted / received in a wireless communication network establishment process. It is a figure which shows the example of the communication destination apparatus registration information memorize | stored in the communication destination apparatus memory | storage part by the radio | wireless communication network establishment process and the terminal communication network establishment process. It is a figure which shows the example of the communication network established by the radio | wireless communication network establishment process and the terminal communication network establishment process. It is a figure which shows the example of communication destination apparatus registration information. It is a figure which shows the structure of data packet information. It is a figure which shows the process in which information is registered into a structure of routing apparatus registration information, and routing apparatus registration information. It is a figure which shows the example of routing apparatus registration information. It is a figure which shows the structure of a relay terminal device. It is a figure which shows a mode that communication destination apparatus registration information is changed. It is a figure which shows a mode that routing apparatus registration information is changed when there exists only registration deletion with respect to communication destination apparatus registration information. It is a figure which shows a mode that routing apparatus registration information is changed in a communication destination apparatus exchange process. It is a figure which shows a mode that relay terminal apparatus AT3 is selected instead within the predetermined time, after relay apparatus A3 stops selecting relay apparatus A2 as a communication destination apparatus. It is a figure which shows a mode that the communication destination apparatus registration information of relay apparatus A2 is changed. It is a figure which shows deletion notification packet information. It is a figure which shows a mode that routing apparatus registration information is changed in a deletion notification packet information transmission process. It is a figure which shows the routing device registration information of the relay apparatus A4 which received the deletion notification packet information which described the address concerning the matching which should be deleted from routing device registration information, and such deletion notification packet information. It is recognized that the information processing terminal device T2 has moved away from the communication system 1, or that the information processing terminal device T2 has been turned off and the relay device A2 has stopped selecting the information processing terminal device T2 as the communication destination device. It is a figure which shows the routing apparatus registration information of relay apparatus A2 in the case. It is a figure which shows the path | route alerting | reporting packet information which relay apparatus A3 transmits. It is a figure which shows the route alerting | reporting packet information which relay apparatus A4 transmits. It is a figure which shows the path | route apparatus registration information in relay apparatus A3, and the routing alert packet information which relay apparatus A3 transmits. It is a figure which shows the structure of a radio | wireless communications system.

Explanation of symbols

1, 1a, 1b, 1c communication system, 3 wireless communication system, 10 antenna, 12 connection selection unit, 14 transmission / reception unit, 16 communication network establishment processing unit, 18 communication destination device selection unit, 20 communication destination device storage unit, 22 routes Analysis unit, 24 route device storage unit, 26 relay blocking unit, 28 relay information generation unit, 30 own address storage unit, 32 destination confirmation unit, 34 information acquisition unit, 36 transmission information generation unit, 38 registration monitoring unit, 40 storage means 42, communication destination device selection means, 44 information generation unit, 100, 100a, 100b wired communication network, A, A1-Aq, P, P1-Pn relay device, T, T1-Tp, U, U1-Um Device, AT, AT1-AT4 Relay terminal device.

Claims (8)

An information acquisition unit for acquiring information;
An acquisition information transmission unit for transmitting information acquired by the information acquisition unit;
Bei to give a,
A relay device to establish a wireless path to wired connection to wired / wireless communication device to the wired communication network,
A device registration unit for registering a transmission destination device that is a transmission destination device of information to be transmitted by the acquired information transmission unit and can transmit information to a terminal device that is the destination of the information;
When the registration of the transmission destination device is deleted from the device registration unit, a deletion information generation unit that generates deletion information indicating that the registration of the transmission destination device has been deleted,
With
The acquired information transmitting unit transmits the erasure information separately from the information acquired by the information acquiring unit to a wired-side wireless path toward the wired / wireless communication apparatus, and another device on the wired-side wireless path In contrast, the relay apparatus is characterized in that information on the transmission destination apparatus whose registration has been deleted is deleted from the wireless route information of the other apparatus. An information acquisition unit for acquiring information;
An acquisition information transmission unit for transmitting information acquired by the information acquisition unit;
Equipped with a,
A relay device to establish a wireless path to wired connection to wired / wireless terminal device to the wired communication network,
A terminal device registration unit that registers a terminal device that is a transmission destination of information transmitted by the acquired information transmission unit;
When the registration of the terminal device is deleted from the terminal device registration unit, a deletion information generation unit that generates deletion information indicating that the registration of the terminal device is deleted;
With
The acquired information transmitting unit transmits the erasure information separately from the information acquired by the information acquiring unit to a wired-side wireless path toward the wired / wireless communication apparatus, and another device on the wired-side wireless path On the other hand, the relay device is characterized in that information related to the terminal device whose registration has been deleted is deleted from the wireless route information of the other device. An information transmission device on the wired wireless path,
An information generation unit that generates information to be transmitted;
A generation information transmission unit that transmits information generated by the information generation unit;
The relay device registration unit for registering the relay device according to claim 1 or 2, which acquires and relay-transmits information transmitted by the generation information transmission unit;
A route information storage unit that stores, as the wireless route information, route information in which the relay device registered in the relay device registration unit is associated with the terminal device to which the relay device can transmit information;
An identification information injection unit for including identification information for identifying the relay device registered in the relay device registration unit in information generated by the information generation unit;
With
The relay device registered in the relay device registration unit causes the relay device to transmit the information transmitted by the generated information transmission unit , and the information transmission device further includes:
An erasure information acquisition unit for acquiring the erasure information transmitted by the relay device registered in the relay device registration unit;
An information transmitting apparatus, wherein when the erasure information acquisition unit acquires the erasure information, information corresponding to the erasure information is deleted from the route information stored in the route information storage unit. An information transmission device,
An information generation unit that generates information to be transmitted;
A generation information transmission unit that transmits information generated by the information generation unit;
A relay device registration unit for registering a relay device that acquires and relay-transmits information transmitted by the generated information transmission unit and has a unit for registering a device that is a transmission destination of information transmitted by the relay device. When,
A route information storage unit that stores route information in which the relay device registered in the relay device registration unit is associated with a terminal device to which the relay device can transmit information;
An identification information injection unit for including identification information for identifying the relay device registered in the relay device registration unit in information generated by the information generation unit;
With
Relay transmission of the information transmitted by the generated information transmission unit to the relay device registered in the relay device registration unit ;
The relay device is a device that establishes a wireless path for a wired / wireless terminal device wired to a wired communication network, and when registration of a device that is a transmission destination of information transmitted by the relay device is deleted, The deletion information indicating that is transmitted to the wired wireless path toward the wired / wireless communication device,
The information transmission device is in the wired side wireless path over, provided with a peripheral information acquisition unit that acquires the deletion information that the relay device registering unit the relay device registered in sent,
An information transmitting apparatus, wherein when the erasure information acquisition unit acquires the erasure information, information corresponding to the erasure information is deleted from the route information stored in the route information storage unit. The information transmission device according to claim 3 or 4, wherein
The erasure information includes relay device identification information for identifying the relay device that has transmitted the erasure information,
The information transmission device deletes information about association of the relay device identified by the relay device identification information included in the erasure information from among the route information stored in the route information storage unit. Information transmitting device. The information transmission device according to any one of claims 3 to 5,
The erasure information includes device designation information that designates either the relay device or the terminal device associated in the route information,
The information transmission device deletes information about association of the devices specified by the device designation information from among the route information stored in the route information storage unit. The information transmission device according to any one of claims 3 to 6,
The information transmission device, wherein the generation information transmission unit transmits the erasure information acquired by the erasure information acquisition unit to the wired wireless path separately from the information generated by the information generation unit. A communication system including the information transmission device according to any one of claims 3 to 7 , the relay device, and the terminal device.

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