JP6525277B2 - Repeater - Google Patents

Description

  The present invention relates to a relay that sends data sent by a transmission source to a transmission destination.

  In a wireless communication system, a master usually has a MAC address filtering function of limiting a slave to which data information is to be transmitted by the MAC address (see, for example, Non-Patent Document 1). Here, "MAC" is an abbreviation of "Media Access Control". In order to make the function work effectively, the master device has a MAC address list including the MAC addresses of the slave devices that transmit (or do not transmit) data information. The MAC address of the MAC address list is set by the user of the parent device.

  The relay device that relays data information between the parent device and the child device in the wireless communication system also usually has a MAC address filtering function of limiting the child device to which data information is transmitted by the MAC address. There is. The MAC address of the MAC address list is set by the user of the relay device. The MAC address of the MAC address list should be identical to the MAC address of the MAC address list of the parent device. This is because the data information should not be sent from the other communication device via the relay device to the child device which has decided not to send the data information by the master device that manages the communication system.

  Patent Document 1 discloses a proxy terminal that specifies, from correspondence information, a MAC address corresponding to an IP address included in a MAC address inquiry request based on the IP address of a mobile terminal, and sends back an inquiry response including the MAC address. Do.

  Patent Document 2 discloses a promiscuous mode in the context of the present invention.

Unexamined-Japanese-Patent No. 2010-021713 Unexamined-Japanese-Patent No. 2002-237821

IT glossary e-Words "MAC address filtering (MAC address filtering)", [September 13, 2016 search], Internet (http://e-words.jp/w/MAC%E3%82%A2% E3% 83% 89% E 3% 83% AC 3% 82% B 9% E 3% 83% 95% E 3% 82% A 3% E 3% 83% AB% E 3% 82% BF% E 3% 83% AA% E 3% 83% B 3% E 3% 82% B 0. html)

  Here, although the MAC address list of the parent device is set by the user of the parent device, the setting of the MAC address list of the relay device including the MAC address of the same content is the same as that of the relay device. There is a problem that the user needs to do it again.

  The present invention automatically derives an address list for determining whether the data information can be sent or not, with the address of the child device included in the address list for the parent device to determine whether the data information can be sent or not. The purpose is to provide a relay device that can

    The relay device of the present invention includes a communication unit, a determination unit, and a derivation unit. The communication unit receives communication information transmitted and received by the slaves each having a unique address. The determination unit outputs the result of the determination as to the presence or absence of transmission of data information from the parent device to the child device associated with the address included in the communication information. The derivation unit generates a set of the addresses according to a predetermined one of the results.

  The relay device according to the present invention includes the address of the slave device included in the address list in order for the master device to determine whether the data information can be sent or not, and the relay device can use the address list to determine whether the data information can be sent. It can be derived automatically.

It is a conceptual diagram showing the example of composition of the communication system of this embodiment. It is a conceptual diagram showing the example of composition of a parent machine, a relay machine, and a child machine. It is a conceptual diagram showing the information which each recording part hold | maintains. It is a conceptual diagram showing the structural example of a process part. It is a conceptual diagram showing the process flow example of the process which the sub process part 113ba performs. It is a conceptual diagram showing the example of a processing flow of the processing which sub-processing part 113bb performs. It is explanatory drawing showing the 1st specific example of the operation | movement which a relay performs. It is explanatory drawing showing the 2nd specific example of the operation | movement which a relay performs. It is a block diagram showing the minimum composition of the relay machine of the present invention.

  FIG. 1 is a conceptual diagram showing the configuration of a communication system 101 which is an example of the communication system of the present embodiment.

  The communication system 101 includes a master unit 111, a plurality of relay units of the relay units 211 to 21m, and a plurality of slave units of the slave units 311 to 31n.

  The parent device 111 is connected to another network other than the communication system 101. The connection may be wireless connection or wired connection. In the description of the embodiment, "connected" means that communication is possible.

  The parent device 111 can emit a radio wave (not shown) including a transmission signal around the parent device 111. The radio waves can reach the repeaters 211 to 21 m and the slaves 311 to 31 n with a receivable intensity. The parent device 111 also receives a receivable one of the signals contained in the radio wave (not shown) that has reached the parent device 111. The items that can be received include radio waves sent from the relay device 211 and the slaves 311 to 31 n to the master 111.

  The relay unit 211 can emit a radio wave (not shown) including a transmission signal around the relay unit 211. The radio wave can reach the master unit 111 and the slaves 311 to 31 n with a receivable intensity. The relay unit 211 also receives a receivable one of the signals contained in the radio wave (not shown) that has reached the relay unit 211. The items that can be received include radio waves sent from the master unit 111 and the slave units 311 to 31 n to the relay unit 211.

  The relay device 211 also sends, to one or more of the information included in the wireless signal (not shown) sent from the master device 111, one to be sent to one or more of the slave devices 311 to 31n.

  The relay device 211 also sends, to the master device 111, information to be sent to the master device 111 among the information included in the wireless signal sent from each of the slave devices 311 to 31n.

  The other operations performed by the relay device 211 will be described later.

  Each of the slaves 311 to 31 n can emit a wireless radio wave (not shown) including a transmission signal around the respective slaves. The wireless radio waves can reach at least the master unit 111 and the relay unit 211 with receivable strength. Each of the above also receives receivable ones of the signals included in the radio waves (not shown) that have reached the respective ones. The items that can be received include radio waves sent from the master unit 111 and the relay unit 211 to the respective units.

  The relays 211 to 21 m may be the relays 211 alone. Further, the child devices 311 to 31 n may be only the child device 311.

  The parent device 111 is, for example, a base station. Further, a not-shown higher-order base unit communicating with the base unit 111 may be present in another network shown in FIG.

  The relays 211 to 21 m are, for example, wireless routers.

  The slaves 311 to 31 n are, for example, terminals, slaves, or relays that transmit information sent by the relays 211 to 21 m to other communication devices.

  Next, a configuration example of each of the master unit 111, the relay units 211 to 21m, and the slave units 311 to 31n shown in FIG. 1 will be described.

  FIG. 2 is a conceptual diagram showing a configuration example of each of the master unit, the relay unit and the slave unit shown in FIG. FIGS. 2A, 2B, and 2C show an example of the configuration of the master unit 111a, the relay unit 211a, and the slave unit 311a in this order. The master unit 111a, the relay unit 211a, and the slave unit 311a are examples of the master unit 111, the relay units 211 to 21m, and the slave units 311 to 31n, respectively, shown in FIG.

  The parent device 111a includes a communication unit 102a, a processing unit 103a, and a recording unit 104a.

  Communication processing performed by the parent device 111a is performed by the communication unit 102a in accordance with an instruction from the processing unit 103a. Also, the recording unit 104a performs the recording of the information performed by the parent device 111a according to the instruction of the processing unit 103a. The processing unit 103a performs processing other than the above that is performed by the parent device 111a. Note that the communication unit 102 a and the processing unit 103 a may have all or part of the hardware configuration in common.

  Communication processing performed by the relay device 211a is performed by the communication unit 112a in accordance with an instruction from the processing unit 113a. Further, the recording unit 114a performs the recording of the information performed by the relay unit 211a according to the instruction of the processing unit 113a. Processing part 113a performs processing other than the above which relay machine 211a performs. Note that the communication unit 112 a and the processing unit 113 a may have all or part of the hardware configuration in common.

  Communication processing performed by the slave unit 311 a is performed by the communication unit 122 a according to an instruction from the processing unit 123 a. Also, the recording unit 124a performs recording of information performed by the slave unit 311a according to an instruction of the processing unit 123a. Processing part 123a performs processing other than the above which child machine 311a performs. Note that the communication unit 122a and the processing unit 123a may have all or part of the hardware configuration in common.

  FIG. 3 is a conceptual diagram showing information held by the recording units 104b, 114b and 124b which is an example of the recording units 104a, 114a and 124a shown in FIG. The recording units 104b, 114b and 124b are examples of the recording units 104a, 114a and 124a in this order.

  The recording unit 104a of the parent device 111a includes a BSSID for communication BSSID 1041 and a MAC address list 1043. Here, "BSS" is an abbreviation of "Basic Service Set". Also, "ID" is an abbreviation of "Identifier". The BSSID is defined by the IEEE 802.11 standard. Also, "MAC" is an abbreviation of "Media Access Control".

  The communication BSSID 1041 is an identifier used for communication performed by the master device 111 a with the communication device. The communication devices include relay devices 211 to 21 m and slave devices 311 to 31 n.

  Hereinafter, a case where the relay unit 211a and the slave unit 311a illustrated in FIG. 2 are the relay unit 211 and the slave unit 311 illustrated in FIG. 1 will be described.

  The MAC address list 1043 included in the recording unit 104 b is either the first list or the second list described below.

  The first list is a list used by the parent device 111a to perform the first operation described below.

  When the parent device 111a tries to send data information to any of the child devices 311 to 31n shown in FIG. 1, the MAC address of the transmission destination of the data information included in the data information is the first address. Determine if it is in the list. Then, if it is determined that the MAC address of the transmission destination is in the first list, the master device 111a sends the data information to the transmission destination slave device. When it is not determined that the MAC address of the transmission destination is in the first list, the parent device 111a does not send the data information to the transmission destination child device.

  On the other hand, when the parent device 111a receives data information sent from a certain child device, whether the MAC address of the child device that has sent the data information contained in the data information is in the first list or not Determine Then, if it is determined that the MAC address is in the first list, the parent device 111a sends the data information to the destination. When it is not determined that the MAC address of the child device is in the first list, the parent device 111a does not transmit the data information to the destination.

  On the other hand, the second list is a list used by the parent device 111a to perform the second operation described below.

  When the parent device 111a tries to send data information to any of the child devices 311 to 31n shown in FIG. 1, the MAC address of the transmission destination child device of the data information contained in the data information is It is determined whether or not it is in the second list. When it is determined that the MAC address of the destination handset is not in the second list, the master 111a sends the data information to the destination handset. When it is not determined that the MAC address of the transmission destination is not in the second list, the parent device 111a does not send the data information to the transmission destination child device.

  On the other hand, when the master unit 111a receives data information scheduled to be sent from another slave unit to another destination, the MAC address of the slave unit that has sent the data information included in the information data report is It is determined whether or not it is in the second list. Then, when it is determined that the MAC address is not in the second list, the parent device 111a sends the data information to the transmission destination. When it is not determined that the MAC address of the child device is not in the second list, the parent device 111a does not transmit the data information to the destination.

  On the other hand, the recording unit 114 b of the relay device 211 a holds the BSSID for communication 1041, the database 1142, and the MAC address list 1143. The communication BSSID 1041 held by the recording unit 114b is the same as the communication BSSID 1041 held by the recording unit 104b of the parent device 111a.

  The database 1142 is a database including a group of a set of the BSSID acquired by the communication performed by the relay device 211a with the master device 111a and the MAC address of the slave device. The acquisition operation of the set will be described later.

  The MAC address list 1143 is a list for the following operation performed by the relay device 211a.

  The MAC address list 1143 included in the recording unit 114 b is either the third list or the fourth list described below.

  The third list is a list for the relay device 211a to perform the first operation described below.

  When trying to send data information to any of the handsets 311 to 31n shown in FIG. 1, the relay station 211a determines whether the MAC address of the destination handset is in the third list or not. Do. Then, when it is determined that the MAC address of the destination slave device is in the third list, the relay device 211a sends the information to the destination. When it is not determined that the MAC address of the destination is in the third list, the relay device 211a does not send the information to the destination.

  On the other hand, when the relay device 211a receives data information scheduled to be sent from one child device to another, the MAC address of the child device that sent the information included in the data information is included in the third list. Determine if there is. Then, when it is determined that the MAC address is in the third list, the relay device 211a sends the information to the transmission destination. If the relay device 211a does not determine that the MAC address of the slave device is in the third list, the relay device 211a does not transmit the information to the transmission destination.

  On the other hand, the fourth list is a list for the relay device 211a to perform the first operation described below.

  When the relay device 211a tries to send data information to any of the slave devices 311 to 31n shown in FIG. 1, whether the MAC address of the transmission destination of the data information is not in the fourth list or not Determine Then, when it is determined that the MAC address of the transmission destination is not in the fourth list, the relay device 211a sends the information to the transmission destination. When it is not determined that the MAC address of the transmission destination is not in the fourth list, the relay device 211a does not transmit the information to the transmission destination.

  On the other hand, when the relay device 211a receives data information scheduled to be sent from one slave device to another, the MAC address of the slave device that has sent the data information included in the data information is the fourth address. Determine if it is not in the list. Then, when it is determined that the MAC address is not in the fourth list, the relay device 211a sends the information to the transmission destination. If the relay device 21a1 does not determine that the MAC address of the slave device is not in the fourth list, the relay device 21a1 does not transmit the information to the transmission destination.

  Next, an operation of acquiring data of the database 1142 performed by the relay device 211a will be described.

  The relay device 211a receives (intercepts) communication that the slaves 311 to 31n perform without passing through the relay device 211a. The reception (intercepting) is performed by the communication unit 112 a shown in FIG.

  The communication to be intercepted includes communication in which the master 111 directly communicates with each of the slaves 311 to 31 n without passing through the relay 211 a. Further, the communication to be intercepted includes communication in which each of the slaves 311 to 31 n directly communicates with another communication device other than the master 111 a without using the relay 211 a.

  The relay device 211a performs the reception (interception) by operating in, for example, a promiscuous mode. By operating in the promiscuous mode, other communication devices including the master device 111a can intercept information sent directly to each slave device. The promiscuous mode is described, for example, in Patent Document 2. When operating in the promiscuous mode, the relay device 211a includes, for example, a board that supports the operation in the promiscuous mode as a hardware configuration. The board is provided with, for example, the communication unit 112 a illustrated in FIG.

  Then, the relay device 211a extracts, from each of the received (intercepted) communication information, a set of the BSSID of the transmission source and the MAC address of the transmission destination slave device. The extraction is performed by the processing unit 113a illustrated in FIG.

  Then, the relay device 211 a adds the extracted set to the database 1142.

  The relay device 211a repeats the above-mentioned operation each time the communication information is received (intercepted).

  Next, the operation of the relay device 211 shown in FIG. 1 to create the MAC address list 1143 will be described. The operation is performed by the processing unit 113a illustrated in FIG.

  The relay unit 211a reads each piece of information (the above-described set) stored in the database 1142. Then, the relay unit 211a selects, from among the pieces of information, information related to communication directly performed by the master unit 111a with each of the slave units 311 to 31n. The relay device 211a performs the selection by determining whether the BSSID included in the communication information is a BSSID that the master device 111a uses for communication.

  The relay device 211 a determines whether the MAC address of the slave device included in the information included in the selected communication information is in the MAC address list 1143. Then, when it is determined that the MAC address is not in the MAC address list 1143, the relay device 211 a adds the MAC address to the MAC address list 1143. On the other hand, as illustrated in FIG. 3C, the recording unit 124b of the slave device 311a holds the communication MAC address 1244. The communication MAC address 1244 is a MAC address used by the slave device 311 a to communicate with other devices.

  Next, an operation performed by the processing unit 113a of the relay device 211a illustrated in FIG. 2 will be described in more detail by dividing the processing unit 113a into two parts.

  FIG. 4 is a conceptual diagram showing a configuration of a processing unit 113b which is an example of the processing unit 113a of the relay device 211a shown in FIG.

  The processing unit 113 b includes sub-processing units 113 ba and 113 bb.

  The sub-processing unit 113 ba is sent received information, which is information received by the communication unit 112 a shown in FIG. 2 from the master unit 111 shown in FIG. 1. Then, if the sub-processing unit 113ba determines that the received information is the target information, the sub-processing unit 113ba acquires a set of the communication BSSID and the communication MAC address of the slave included in the target information. Here, "target information" is received information to be acquired for the set. Further, the communication BSSID is a BSSID corresponding to the communication BSSID shown in FIGS. 3 (a) and 3 (b). The communication MAC address is a MAC address shown in FIG. 3 (c).

  The sub processing unit 113 ba stores a set of the acquired communication BSSID and the communication MAC address of the slave device in the database 1142 shown in FIG. 3B held by the recording unit 114 a shown in FIG. 2.

  The target information is, for example, information related to DataFrame communication, which is sent from the parent device 111 and performed by the parent device 111 with the child device. Here, DataFrame communication is defined in the IEEE 802.11 standard. Hereinafter, "DataFrame" is described as "DF".

  The DF communication information includes the communication BSSID 1041 shown in FIGS. 3A and 3B and the communication MAC address 1244 of the slave 311 shown in FIG. 3C. Then, DF communication between the parent device and the child device is performed (when there is no MAC address of the child device in the MAC address list of the parent device (corresponding to the MAC address list 1043 shown in FIG. 3)). Only done. Therefore, the MAC address of the set of BSSID and the MAC address of the slave included in the DF communication information is used for the information used to match the communication MAC address list of the relay device 211 with the MAC address list of the parent device 111. be able to.

  On the other hand, the set of the BSSID and the MAC address of the slave included in the target information can not be extracted from the set included in the ManagementFrame communication information as it is. Here, ManagementFrame communication is defined in the IEEE 802.11 standard. Hereinafter, "ManagementFrame" is described as "MF".

  The reason is that MF communication between the master and slave is also performed when the MAC address of the slave is not in the MAC address list of the master (corresponding to the MAC address list 1043 shown in FIG. 3). It is. Therefore, the information of the MAC address list of the parent device is not reflected on the MAC address of the set of the BSSID and the MAC address of the child device included in the MF communication information. Therefore, the set of the MF communication information can not be used as the information for aligning the communication MAC address list of the relay device 211 with the MAC address list of the parent device 111 as it is.

  However, it is possible to use the set of specific MF communication information as the information for the combination by determining whether or not the transmission of the data information is prohibited by the MF information.

  The relay unit 211 performs the determination, for example, as follows.

  The relay device 211 first focuses on the MF information sent by the master device 111 to a slave device. Then, the relay device 211 extracts a set of the BSSID included in the MF information and the MAC address of the slave device. Then, in the management information that the slave including the set sends to the master 111, the relay 211 determines whether the slave transmits Authentication to the master 111. Then, the relay device 211 determines the presence or absence of a response of the parent device 111 to the authentication when the child device transmits the authentication to the parent device 111. The relay device 211 performs the determination by checking whether or not there is a response from the parent device 111 within a predetermined time after the child device sends an Authentication to the parent device 111. Then, when the relay device 211 determines that there is no response, the master device 111 determines the content of the purport that the sending of the DataFrame information to the slave device is prohibited.

  Then, the relay device 211 extracts the MAC address of the set as a MAC address of a slave device to which the relay device 211 does not send DataFrame information.

  On the other hand, the sub-processing unit 113bb reads the set stored in the database 1142 shown in FIG. 3B from the recording unit 114. The said database is the newest thing which the sub process part 113ba performed a postscript process, for example. Then, the sub-processing unit 113bb checks whether the read set includes a set including the communication BSSID 1041 shown in FIG. 3B. If the sub-processing unit 113bb determines that there is a set including the BSSID 1041, the sub-processing unit 113bb determines whether the MAC address of the slave included in the set is in the MAC address list 1143. Then, when it is not determined that the MAC address of the child device included in the set is in the MAC address list 1143, the sub processing unit 113bb adds the MAC address to the MAC address list 1143. The sub-processing unit 113bb repeats the above operation.

  The sub-processing unit 113ba and the sub-processing unit 113bb may have the same hardware configuration.

  FIG. 5 is a conceptual diagram showing an example of a processing flow of processing performed by the sub processing unit 113 ba shown in FIG. 4.

  As the process of S101, the sub-processing unit 113ba first determines whether the above-described transmission of the target information has been received from the communication unit 112a illustrated in FIG. 2B. For example, in the case where the above-described DF communication information is set as the target information, the sub-processing unit 113ba determines whether the transmission of the reception information related to the DF communication that is the target information is received from the communication unit 112a as the processing of S101.

  When the determination result by the process of S101 is "yes", the sub-processing unit 113ba performs the process of S102.

  On the other hand, when the determination result by the process of S101 is "no", the sub-processing unit 113ba performs the process of S101 again.

  When the processing of step S102 is performed, the sub processing unit 113ba acquires a set of the BSSID and the transmission destination MAC address from the reception information as the processing. Then, the set is stored in the database 1142 shown in FIG. 3B held by the recording unit 114a shown in FIG. 2B.

  Then, as the process of S103, the sub-processing unit 113ba determines whether to end the process illustrated in FIG. The sub-processing unit 113ba performs the determination, for example, by determining the presence or absence of the input of the end information from the outside.

  If the determination result in the process of S103 is "yes", the sub-processing unit 113ba ends the process illustrated in FIG.

  On the other hand, when the determination result by the process of S103 is "no", the sub-processing unit 113ba performs the process of S101 again.

  FIG. 6 is a conceptual diagram showing an example of a processing flow of processing performed by the sub-processing unit 113bb shown in FIG.

  As the process of S201, the sub-processing unit 113bb first reads the information (database information) of the database 1142 shown in FIG. 3B at the start of the process from the recording unit 114a shown in FIG. 2B. As shown in FIG. 5, database information is sequentially added by the sub-processing unit 113bb. The database information read as the process of S201 is the latest at the start of the process of S201. The sub-processing unit 113bb may read all the database information as the processing of S201. Alternatively, the sub processing unit 113bb may read only the difference of the database information that has not been read yet. In that case, when there is database information read in the past by the process of S201 before, the sub-processing unit 113bb combines the difference of the database information with the database information read in the past and uses the database for the next process. It is information.

  Next, as the processing of S202, the sub-processing unit 113bb determines whether the set including the communication BSSID 1041 shown in FIGS. 3A and 3B is included in the database information.

  When the sub-processing unit 113bb determines "yes" in the process of S202, the sub-processing section 113bb performs the process of S203.

  On the other hand, when the sub-processing unit 113bb determines “no” in the process of S202, the sub-processing section 113bb performs the process of S207 described later.

  In the case of performing the processing of S203, the sub-processing unit 113bb selects one of the sets determined to be in the database information by the processing of S202 as the same processing.

  Then, as the process of S204, the sub-processing unit 113bb determines whether the MAC address included in the set selected in the process of S203 is in the MAC address list 1143 illustrated in FIG. 3B.

  When the sub-processing unit 113bb determines "no" in the process of S204, the sub-processing section 113bb performs the process of S205.

  On the other hand, if the sub-processing unit 113bb determines “yes” in the processing of S204, the sub-processing unit 113bb performs the processing of S206.

  In the case of performing the process of S205, the sub-processing unit 113bb adds the MAC address of the child device included in the set selected in the process of S203 to the MAC address list 1143 as the process.

  Then, the sub-processing unit 113bb deletes the set from the database as the process of S206.

  Then, as the processing of S207, the sub-processing unit 113bb determines whether to end the processing illustrated in FIG. The sub-processing unit 113bb performs the determination, for example, by determining the presence or absence of input of end information from the outside.

  When the determination result by the process of S207 is "yes", the sub-processing unit 113bb ends the process illustrated in FIG.

  On the other hand, if the determination result of the process of S207 is "no", the sub-processing unit 113bb performs the process of S201 described above again.

  As described above, the relay device 211 wirelessly receives (intercepts) information directly sent to the slave devices 311 to 31 n without passing through the relay device. Then, the relay unit 211 sorts out the above-mentioned target information from the information. The target information includes MAC address information of a child device to which the parent device 111 sends (or does not send) data information. The relay device 211 acquires the MAC address of the child device to which the parent device 111 sends (or does not send) data information. Then, the relay device 211 creates a MAC address list of slave devices to which the relay device 211 sends (or does not send) data information from the acquired MAC address. Therefore, the relay device 211 can create a MAC address list of a slave device to which the relay device 211 sends (or does not send) data information without inputting a user and requiring setting.

  Next, the specific example of the operation | movement which the relay machine of this embodiment performs is demonstrated.

  FIG. 7 is an explanatory view showing a first specific example of the operation performed by the relay device 211b which is an example of the relay device 211 shown in FIG. The parent device 111a and the child devices 311a to 31na shown in FIG. 7 are examples of the parent device 111 and the child devices 311 to 31n shown in FIG. The communication BSSID 1041a is an example of the communication BSSID 1041 shown in FIG. The MAC address list 1143a is an example of the MAC address list 1143 shown in FIG. 3B in the initial stage of the operation shown in FIG. Also, the MAC address list 1143 b is an example of the MAC address list 1143 shown in FIG. 3B which is the last of the operations shown in FIG. 7. The MAC address lists 1143a and 1143b are lists (the list corresponding to the first operation described above) of the MAC address of the slave unit to which the transmitted data information is to be transmitted. The database addition information 1142a is information added to the database 1142 shown in FIG. 3B by the operation shown in FIG.

  As shown in FIG. 7, the parent device 111 a holds “XXX” as the BSSID for communication 1041 a. Although illustration is omitted, the communication BSSID 1041a also holds the relay 211a.

  Also, in the MAC address list 1143a, which is the initial MAC address list of the operation shown in FIG. 7, two MAC addresses of "AA" and "DD" are stored. Each of the MAC addresses is a MAC address of any one of the slaves 311a to 31na.

  In this state, the above-mentioned promiscuous mode is turned ON in the relay unit 211a.

  Thereafter, the relay device 211a receives six pieces of DF communication information of the DF communication information 1146a to 1146f. The DF communication information 1146a to 1146f is DF communication information received by any of the slaves 311a to 31na, which the relay device 211a intercepts in the promiscuous mode operation.

  Each DF communication information includes the MAC address of the transmission destination and the BSSID of the transmission source master device in addition to the data. For example, in the DF communication information 1146a, the MAC address of the transmission destination is "AAA", and the BSSID of the parent device of the transmission source is "XXX".

  The DF communication information includes one originating from the parent device 111b and one transmitted from the other network or other relay device 211a shown in FIG. 1 via the parent device 111b. Then, among the DF communication information, the BSSID included in the starting point of the parent device 111 b is “XXX” which is the same as the communication BSSID 1041 a. Further, among the DF communication information, the BSSIDs included in those sent from communication devices other than the master device 111 b are other than “XXX”.

  Therefore, the relay device 211a can determine that the DF communication information 1146a, 1146c, and 1146f is DF communication information sent by the master device 111a to any one of the slave devices 311a to 31na without passing through the relay device 211a. On the other hand, the relay device 211a determines that the DF communication information 1146b, 1146d and 1146e are DF communication information sent by any device other than the master device 111a to any one of the slave devices 311a to 31na without passing through the relay device 211a. It can.

  The MAC address included in each DF communication information is the MAC address of any one of the slaves 311a to 31na.

  The relay device 211a acquires a set of the MAC address of the transmission destination and the BSSID of the parent device of the transmission source included in each of the DF communication information 1146a to 1146f, and adds it to the database 1142 shown in FIG. Processing of S102 of FIG. 5). The added information is database addition information 1142a shown in FIG.

  Then, the relay device 211a selects one from the database addition information 1142a that has the BSSID equal to “XXX” which is the communication BSSID of the parent device (processing of S202 and S203 in FIG. 6). In the database addition information 1142a, the information of "no" is 1, 3 and 6 is selected.

  Then, the relay device 211a determines, for each of the selected information, whether the MAC address of the information is in the MAC address list 1143a (processing of S204 in FIG. 6). Then, the relay device 211a determines that the MAC address “EE” is not in the MAC address list 1143a (“no” in S204 of FIG. 6).

  Then, the relay device 211a adds “EE” of the MAC address to the MAC address list 1143a (processing of S205 in FIG. 6).

  The MAC address list after the addition is the MAC address list 1143 b.

  FIG. 8 is an explanatory view showing a second specific example of the operation performed by the relay device 211b which is an example of the relay device 211 shown in FIG. The parent device 111b and the child devices 311b to 31nb shown in FIG. 8 are examples of the parent device 111 and the child devices 311 to 31n shown in FIG. The communication BSSID 1041 b is an example of the communication BSSID 1041 shown in FIG. The MAC address list 1143 ba is an example of the MAC address list 1143 shown in FIG. 3B at an early stage of the operation shown in FIG. 8. The MAC address list 1143 bb is an example of the MAC address list 1143 shown in FIG. 3B at the end of the operation shown in FIG. 8. The MAC address lists 1143ba and 1143bb are lists of MAC addresses of local slaves that transmit the transmitted data information (lists corresponding to the second operation described above). The database addition information 1142 b is information added to the database 1142 shown in FIG. 3B by the process shown in FIG. 8.

  As shown in FIG. 8, the parent device 111 b holds “XXX” as the BSSID for communication 1041 b. Although illustration is omitted, the communication BSSID 1041 b also holds the relay device 211 b.

  Also, in the MAC address list 1143 b in the initial stage of the process illustrated in FIG. 8, two MAC addresses “AA” and “DD” are stored. Each of the MAC addresses is a MAC address of any one of the slaves 311b to 31nb.

  In this state, the above-mentioned promiscuous mode is turned ON in the relay unit 211a.

  After that, six pieces of MF communication information of the MF communication information 1147a to 1147f are sent from the master device 111a to the relay device 211a. Each of the MF communication information is assumed to be MF communication information that has been confirmed that the master unit 111 has not responded to the Authentication that each slave unit has issued to the master unit 111.

  Each piece of MF communication information includes the MAC address of the transmission destination and the BSSID of the transmission source in addition to the management information. For example, in the MF communication information 1147a, the MAC address of the transmission destination is "AAA", and the BSSID of the parent device of the transmission source is "XXX".

  The MF communication information includes those sent by the master unit 111b and those sent by communication devices other than the master unit 111b. Then, among the MF communication information, the BSSID included in the information sent by the master device 111 b is “XXX” which is the same as the communication BSSID. Further, among the MF communication information, the BSSIDs included in those sent from communication devices other than the master device 111 b are other than “XXX”.

  The MAC address included in each piece of MF communication information is the MAC address of any one of the slaves 311b to 31nb.

  The relay device 211b acquires a set of the MAC address of the transmission destination and the BSSID of the parent device of the transmission source included in each of the MF communication information 1147a to 1147f, and adds it to the database 1142 shown in FIG. Processing of S102 of FIG. 5). The added information is database addition information 1142 b shown in FIG.

  Then, the relay device 211b extracts, from the database addition information 1142b, one having a BSSID equal to “XXX” which is a communication BSSID of the parent device (processing of S202 and S203 in FIG. 6). In the database addition information 1142 b, “no” is information from which information of 1, 3 and 6 is extracted.

  Then, the relay device 211b determines, for each piece of the extracted information, whether the MAC address of the information is in the MAC address list 1143ba (processing of S204 in FIG. 6). Then, the relay device 211b determines that the MAC address “EE” is not in the MAC address list 1143ba (“no” in S204 of FIG. 6).

  Then, the relay device 211a adds “EE” of the MAC address to the MAC address list 1143ba (processing of S205 in FIG. 6).

The MAC address list after the addition is the MAC address list 1143 b.
[effect]
The relay device of the present embodiment receives information that the master device sends directly to each slave device without passing through the relay device. Then, the relay device selects, from the information, target information including MAC address information of a slave device to which the master device sends (or does not send) data information. Then, the relay acquires, from the target information, MAC address information of a slave to which the master transmits (or does not transmit) data information. Then, the relay device creates, from the acquired information, a MAC address list of the slave device to which the relay device sends (or does not send) data information. Therefore, the relay device can create the MAC address of the slave device to which the relay device sends (or does not send) data information without the user inputting and setting.

  FIG. 9 is a block diagram showing a relay 211x which is a minimum configuration of the relay according to the present invention.

  The relay unit 211x includes a communication unit 112x, a determination unit 133x, and a derivation unit 134x.

  The communication unit 112x receives communication information transmitted / received by a slave unit (not shown) each having a unique address.

  The determination unit 133x outputs the result of the determination as to the presence or absence of transmission of data information from the parent device (not shown) to the child device associated with the address included in the communication information.

  The derivation unit 134x generates a set of the addresses according to one of the predetermined ones of the results.

  The relay device 211x intercepts the communication information related to communication performed by the master device with the slave device without passing through the relay device 211x. The intercepted communication information may include information for the relay device 211x to determine whether the transmission destination child device of the transmission information is the transmission destination to which the master device transmits data information. When the communication information includes information for the determination, the relay device 211x may obtain the address group of the child device from which the parent device sends or does not transmit data information from the sending information. it can. Therefore, the relay device 211x can set the address group of the previous period set by the master device as the address group of the slave device used to determine whether the relay device 211x can send data information.

  Therefore, the relay device 211x achieves the effects described in the section of [Effect of the invention] with the above configuration.

  As mentioned above, although each embodiment of this invention was described, this invention is not limited to above-described embodiment, The further deformation | transformation, substitution, adjustment in the range which does not deviate from the basic technical idea of this invention It can be added. For example, the configuration of the elements shown in each drawing is an example to help the understanding of the present invention, and the present invention is not limited to the configuration shown in these drawings.

  In addition, part or all of the above-described embodiment may be described as in the following appendices, but is not limited to the following.

(Supplementary Note 1)
A communication unit for receiving communication information transmitted / received by the slaves each having a unique address;
A determination unit that outputs a result of the determination as to the presence or absence of transmission of data information from the master unit to the slave unit relating to the address included in the communication information;
A derivation unit that generates a set of the addresses according to one of the predetermined ones of the results;
Repeater equipped with

(Supplementary Note 2)
Appendix 1. The relay according to appendix 1, wherein the communication information is data information.

(Supplementary Note 3)
The relay apparatus according to Appendix 1 or 2, wherein the data information is information related to DataFrame communication defined in the IEEE 802.11 standard.

(Supplementary Note 4)
The relay according to any one of appendices 1 to 3, wherein the presence or absence is determined by determining that certain data information has been sent from the master to the slave.

(Supplementary Note 5)
The relay device according to appendix 1, wherein the communication information is management information.

(Supplementary Note 6)
The relay device according to Appendix 5, wherein the management information is information related to ManagementFrame communication defined in the IEEE 802.11 standard.

(Appendix 7)
The relay described in Supplementary note 5 or Supplementary note 6 or 6, wherein the presence or absence is determined according to the response status or response content of the master unit to information indicating permission of transmission of data information performed by the slave unit to the master unit. Machine.

(Supplementary Note 8)
The relay device according to appendix 7, wherein the information indicating the permission is an authentication defined by the IEEE 802.11 standard.

(Appendix 9)
The relay according to any one of appendices 1 to 8, wherein the address is a Media Access Control (MAC) address.

(Supplementary Note 10)
The relay according to any one of appendices 1 to 9, wherein the communication unit performs the reception by operating in a promiscuous mode.

(Supplementary Note 11)
The relay according to any one of appendices 1 to 10, wherein the presence / absence determination includes partial determination of whether or not the communication information is the communication information sent by the parent device.

(Supplementary Note 12)
The relay device according to appendix 11, wherein the partial determination is performed by determining that an identifier included in the communication information is an identifier used by the master device for communication.

(Supplementary Note 13)
The relay device according to appendix 11, wherein the identifier is a Basic Service Set Identifier (BSSID) defined in the IEEE 802.11 standard.

(Supplementary Note 14)
The relay unit according to Appendix 12 or 13, further comprising: a recording unit that holds the identifier before the determination.

(Supplementary Note 15)
The relay according to any one of Appendixes 12 to 14, wherein the identifier used by the master unit for communication is an identifier used by itself.

(Supplementary Note 16)
The relay according to any one of appendices 1 to 15, wherein it is determined whether data information can be sent to each handset of the handset group based on the information of the address group.

(Supplementary Note 17)
The relay according to any one of appendices 1 to 16, wherein data information is sent to a predetermined slave unit of the slave unit group according to the information of the second address group.

(Appendix A1)
A communication system, comprising: the relay device according to any one of appendices 1 to 12; and the parent device.

(Appendix A2)
The communication system described in appendix A1, further comprising the group of slaves.

(Appendix B1)
Receive communication information transmitted / received by the handsets each having a unique address,
Output the result of the determination as to whether or not the master unit sends data information to the slave unit according to the address included in the communication information;
Generate a set of the addresses according to one of the predetermined ones of the results;
Generation method.

(Appendix C1)
A process of receiving communication information transmitted / received by a slave having a unique address;
A process of outputting the result of the determination as to whether or not the master unit sends data information to the slave unit associated with the address included in the communication information;
A process of generating a set of the addresses according to a predetermined one of the results;
A generation program that causes a computer to execute.

101 communication system 102a, 112a, 112x, 122a communication unit 103a, 113a, 113b, 123a processing unit 113ba, 113bb sub-processing unit 104a, 104b, 114a, 114b, 124a, 124b recording unit 111, 111a master machine 133x determination unit 134x derivation unit Sections 211, 211a, 211x, 212, 21m Relays 311, 311a, 312, 31m Slave units Communication BSSID 1041
Database 1142
MAC address list 1043
Communication MAC address 1244

Claims (10)

A communication unit for intercepting communication information transmitted / received by a slave unit having a unique address;
A determination unit that outputs a result of the determination as to the presence or absence of transmission of data information from the master unit to the slave unit relating to the address included in the communication information;
A derivation unit that generates a set of the addresses according to one of the predetermined ones of the results;
Repeater equipped with   The relay according to claim 1, wherein the communication information is data information.   The relay according to claim 1 or 2, wherein the presence / absence is determined by determining that certain data information has been sent from the master to the slave.   The relay station according to claim 1, wherein the communication information is management information.   5. The relay according to claim 4, wherein the presence / absence is determined based on a response status or response content of the master to information indicating permission of transmission of data information performed by the slave to the master.   The relay device according to any one of claims 1 to 5, wherein the address is a Media Access Control (MAC) address. The relay according to any one of claims 1 to 6, wherein the communication unit performs the interception by operating in a promiscuous mode.   The relay according to any one of claims 1 to 7, wherein the determination of presence / absence includes partial determination of whether or not the communication information is the communication information sent by the parent device.   The relay according to claim 8, wherein the partial determination is performed by determining that an identifier included in the communication information is an identifier used by the master for communication.   The relay device according to claim 9, wherein the identifier used by the parent device for communication is an identifier used by itself for communication.

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