JP4948279B2 - Notch insertion method - Google Patents

Description

The present invention relates to a notch insertion method for inserting a notch in wired communications such as PLC.

  2. Description of the Related Art With recent developments in communication technology, in communication systems that perform communication between a plurality of communication devices connected to each other via a network, communication is performed using various communication methods. For example, among a plurality of wired communication devices, a dedicated line communication that performs communication via a dedicated line network using a dedicated communication line such as a telephone line or a LAN (Local Area Network) cable as a data transmission channel, or a power line Wired communication that performs communication such as power line communication (PLC: Power Line Communication) via a wired network using a wireless communication, or wireless communication such as a wireless local area network (LAN) between a plurality of wireless communication devices Wireless communication is performed through the network.

  As described above, when various wireless / wired communication devices are operating, if communication is performed in the same frequency band among the frequency bands used by the wireless / wireless communication device, radio waves generated by signal radiation are generated. Interference occurs and communication quality deteriorates. This is a big problem, and in order for the communication devices to operate efficiently, it is necessary to devise measures that do not interfere with each other between the communication devices.

  In the field of wireless communication technology, a method of using different frequencies is adopted so that different wireless communication apparatuses A to D do not interfere with each other as in the wireless communication system # 1 shown in FIG. Yes. Further, as in the radio communication system # 2 shown in FIG. 8B, different frequencies are used between the same radio communication apparatuses A to A, for example, by frequency division multiplexing, or time division multiplexing is used. Therefore, a method of avoiding radio wave interference by shifting the timing of communication is employed.

  This problem occurs not only between the wireless communication devices but also between the wired communication device and the wireless communication device.

  FIG. 9 is a diagram for explaining radio wave interference to the wireless communication system generated by the radiated electromagnetic waves from the wired communication system in the wired communication system and the wireless communication system existing therearound.

  In the wired communication system illustrated in FIG. 9, for example, when communication is performed between the wired communication device 1 and the wired communication device 2, electromagnetic waves are radiated by transmission of signals during the communication. At this time, when a wireless communication device (for example, a short-wave radio receiver) E existing around the wired communication system is receiving radio waves of a specific frequency, or a wireless communication system (for example, surrounding the wired communication system) In an amateur radio communication system), when communication is performed between a radio communication device (for example, an amateur radio communication device) F and another radio communication device (for example, another amateur radio communication device) G, these The wireless communication devices E to G may receive radio wave interference due to electromagnetic waves radiated during signal transmission in the wired network 5 in the wired communication system.

  In order to avoid this problem, a cable network such as a balanced twist cable or a coaxial cable is devised in a wired network of a conventional wired communication system. This makes it difficult for radiation electromagnetic waves to be generated in a dedicated line network using a dedicated communication line such as a telephone line.

  However, in wired communication such as PLC, a signal is transmitted not by a dedicated communication line but by an electric wire such as a power line that has not been devised such as a cable structure, so that electromagnetic waves radiated at that time are transmitted to surrounding wireless communication devices. It will cause interference.

  FIG. 10 is a diagram for explaining a state in which the radio communication apparatus is interfered by the radiated electromagnetic waves from the PLC system. FIG. 10A schematically illustrates the wired communication system and the radio communication system existing in the vicinity thereof. FIG. 10B is a schematic diagram showing the spectrum of the PLC signal and the radio wave usage status of the wireless communication apparatus.

  As shown in FIG. 10, in a wired network to which home appliances (for example, home appliances equipped with PLC devices) as wired communication devices are connected, the PLC system wired signals (for example, signals having a frequency of 2 MHz to 30 MHz). Electromagnetic waves radiated at the time of transmission are wireless devices as wireless communication devices (for example, short-wave radio receivers that receive radio waves such as 3 MHz, 6 MHz, and 9 MHz used for short-wave broadcasting, and radio waves with a frequency of 3 MHz to 30 MHz. There is a problem of interference with wireless devices such as amateur wireless communication devices that transmit and receive signals.

  Therefore, in a PLC device, as one technique for avoiding this problem, control is performed to insert a notch in a PLC communication signal so as not to cause radio wave interference with peripheral wireless devices. Here, “inserting a notch” means lowering the signal level (signal strength) of a specific frequency band of a wired communication signal by means such as software processing at the time of communication control.

  That is, in the conventional PLC device, since the orthogonal frequency division multiplexing (OFDM) method is generally adopted as the modulation method, the frequency to be used can be easily selected. Control for inserting a notch in a communication signal is relatively simple.

  However, when a frequency band to be used is determined so as to avoid radio wave interference with respect to various existing wireless communication devices such as a short wave radio receiver and an amateur wireless communication device, a wired communication device such as a PLC device can be used. The frequency is severely limited.

  FIG. 11 is a diagram illustrating an example of interference countermeasures in a conventional PLC device, and FIG. 11A is a conceptual diagram schematically illustrating a wired communication system and a wireless communication system existing in the vicinity thereof. 11 (b) is a schematic diagram illustrating an example in which a notch is inserted in a frequency band used in the wireless communication apparatus for the PLC signal.

  For example, in a PLC signal, amateur wireless communication (3.5 [MHz] to 3.575 [MHz], 3.747 [MHz] to 3.754 [MHz], 3.791 [MHz] to 3.805 [MHz], 7.0 [MHz] to 7.1 [MHz], 10.1 [MHz] to 10.15 [MHz], 14.0 [MHz] to 14.35 [MHz], 18.068 [MHz] to 18.168 [MHz], 18.9 [MHz] to 19.02 [MHz], 21.0 [MHz] to 21.45 [MHz], 24.89 [MHz] to 24.99 [MHz], 28.0 [MHz] to 29.7 [MHz] (full bandwidth: 3.813 [MHz])) and shortwave broadcasting (3.9 [MHz] to 3.95 [MHz] *, 5.9 [MHz] to 5.95 [MHz], 5.95 [MHz] to 6.2 [MHz] *, 7.1 [MHz] to 7.35 [MHz], 9.4 [MHz] to 9.9 [MHz] *, 11.6 [MHz] to 12.1 [MHz] *, 13.57 [ MHz] to 13.87 [MHz] *, 15.1 [MHz] to 15.8 [MHz] *, 17.48 [MHz] to 17.9 [MHz], 21.45 [MHz] to 21.85 [MHz], 25.67 [MHz] to 26.1 [MHz] * (Full bandwidth: 3.85 [MHz]), avoid using frequency bands used in radio astronomy (25.55 [MHz] to 25.67 [MHz] (total bandwidth: 120 [kHz]) (See Fig. 11 (b)), and the transmittable bandwidth is reduced accordingly, so that the PLC communication The capacity is reduced and the communication speed is reduced.Since the frequency band of shortwave broadcasting includes the frequency band of shortwave broadcasting used overseas, it is not necessary to notch all frequency bands in Japan. No. * is used in Japan, and the total bandwidth in Japan is 2.73 [MHz].

  As described above, even by avoiding only the band used in amateur radio (inserting a notch), the band of about 4 [MHz] is reduced. When considering short-wave broadcasting and other radio bands, 7 [MHz] A certain band (28 MHz → 21 MHz) cannot be used. For this reason, the bandwidth that can be used by a wired communication device such as a PLC device may be reduced to, for example, about 25%.

  Therefore, if the frequency band into which the notch is inserted is fixed, the frequency band that can be used in wired communication devices such as PLC devices is fixed, and existing wireless communication devices such as amateur radio communication devices and short wave radio receivers are always in operation. In spite of that, only about 75% of the frequency can always be used.

  On the other hand, Patent Document 1 below proposes a method (hereinafter referred to as a conventional method) for detecting a frequency band used by a peripheral wireless communication device and reserving a frequency band used by the own station. .

In other words, in this conventional method, each communication system grasps the frequencies used in peripheral communication systems and the frequencies that cannot be used, avoids these frequencies as necessary, and reserves the frequencies to be used. When the setting of the reserved frequency of another communication device is detected, it is notified that the frequency is unavailable so that communication addressed to the local station is not performed at that frequency, and the use at the reserved frequency is not hindered. In addition, by temporarily declaring use at the time of reservation setting, other communication stations can avoid reserving the same frequency.
JP 2005-252645 A

  However, in the above-described conventional method, the frequency band used by the peripheral wireless communication device is detected, the frequency band used by the local station is reserved, and the notch is not used so that the frequency band used by the peripheral wireless communication device is not used. For insertion, for example, when there is a radio wave such as a short wave broadcast, but the use frequency band of the wireless communication device is not required at that time around the wired network (specifically, Also, in the case of shortwave broadcasting or the like, when the shortwave radio receiver does not receive the shortwave broadcast), a notch is inserted in the frequency band (see FIG. 12B). As a result, when viewed from the wired network side, unnecessary notches are inserted, leading to a reduction in communication capacity. FIG. 12 is a diagram showing problems of countermeasures against interference in a conventional PLC device, and FIG. 12 (a) is a conceptual diagram schematically showing a wired communication system and a wireless communication system existing therearound. FIG. 12B is a schematic diagram for explaining that unnecessary notches are inserted into the PLC signal.

The present invention, as viewed from the wired network side, it is possible to avoid the insertion of undesired notch in the communication signal wire communication, thereby Ru can increase the communication capacity of a wired communication Roh pitch insertion method The purpose is to provide.

In order to solve the above-described problems, the present invention provides the following notch insertion method according to the first aspect and the second aspect .
( 1 ) Notch insertion method according to the first aspect A method for inserting a notch into a communication signal of a wired communication in a wired communication system that performs wired communication between a plurality of wired communication devices connected to each other via a wired network. A wired communication device unit that performs wired communication via the wired network, and a wireless communication device unit that is capable of performing first wireless communication regardless of generation of radiated electromagnetic waves from the wired network by the wired communication. The wired communication device includes a first wireless communication device unit capable of performing the first wireless communication with the wireless communication device unit, and interference of radiation electromagnetic waves from the wired network by the wired communication. A first wireless communication device including a second wireless communication device unit that performs second wireless communication to obtain the first wired network; A network notification step of notifying by wire communication, and detecting the reception state of the notification from the wire communication device in the wireless communication device around the wire network, and the communication signal of the wire communication according to the detected reception state A determination step for determining whether or not a notch needs to be inserted into the wireless communication device around the wired network, and when determining that a notch needs to be inserted into the communication signal of the wired communication, In the wireless communication device information registration step for registering information identifying the wireless communication device in the storage unit of the wireless communication device, and in the wireless communication device around the wired network, it is necessary to insert a notch in the communication signal of the wired communication If it is determined that there is a frequency band used for the second wireless communication, the second wireless communication device unit at the time of the processing In the determination step of determining whether or not it is necessary, and in the wireless communication device around the wired network, when it is determined that the second wireless communication device unit needs the frequency band used for the second wireless communication, A transmission step of transmitting information related to a necessary frequency band required by the second wireless communication device to the wired communication device by the first wireless communication; and the necessary frequency received from the wireless communication device in the wired communication device. based on the information about the band, and a state of inserting the notches only in the required frequency band for the communication signal of the wired communication so as not to interfere in the radiation wave with respect to the second wireless communication of the wireless communication device And a notch insertion step.
(2) Notch insertion method of the second aspect
A method of inserting a notch into a communication signal of wired communication in a PLC system that performs wired communication of power line communication between a plurality of wired communication devices connected to each other via a wired network using a power line, the wire communication The wired device comprising: a wired communication device unit that performs wired communication via a network; and a wireless communication device unit that is capable of performing first wireless communication regardless of generation of radiated electromagnetic waves from the wired network by the wired communication. In the communication device, a first wireless communication device capable of performing the first wireless communication with the wireless communication device, and a second wireless capable of receiving interference of radiated electromagnetic waves from the wired network by the wired communication The first wireless communication means that the wired network exists in the vicinity of the wireless communication device including the second wireless communication device unit that performs communication. Therefore, in the network notification step of notifying, and in the wireless communication device around the wired network, the reception state of the notification from the wired communication device is detected, and the communication signal of the wired communication is notched according to the detected reception state. A determination step for determining whether or not it is necessary to insert a notch; and in the wireless communication device around the wired network, when it is determined that it is necessary to insert a notch into the communication signal of the wired communication, the second A determination step of determining whether or not the second wireless communication device unit needs a use frequency band of wireless communication at the time of the processing; and the use of the second wireless communication in the wireless communication device around the wired network When it is determined that the second wireless communication device unit needs a frequency band, a necessary frequency band required by the second wireless communication device unit Transmitting information related to the wired communication device by the first wireless communication, and in the wired communication device, based on the information about the necessary frequency band received from the wireless communication device, the second of the wireless communication device. A notch insertion step that includes a notch insertion step in which a notch is inserted only in the necessary frequency band with respect to a communication signal of the wired communication so as not to cause interference of the radiated electromagnetic wave with respect to wireless communication. Method.

In the notch insertion methods of the first aspect and the second aspect according to the present invention, typical examples of the wired communication include power line communication (PLC). In this case, the wired communication system can be a PLC system that performs power line communication between a plurality of wired communication devices connected to each other via a wired network.

  The wireless communication device unit and the wireless communication device of the wired communication device may be connected to a wireless system that performs the first wireless communication via a wireless network. A typical example of the first wireless communication is wireless LAN communication.

  Examples of the second wireless communication include amateur wireless communication, reception of shortwave broadcasting, wireless communication used for radio astronomy, and wireless communication for aviation.

According to the notch insertion method of the first aspect and the second aspect of the present invention, the wireless communication is performed based on information on a necessary frequency band that the second wireless communication apparatus unit of the wireless communication apparatus needs at the time of the processing. since a state of inserting the notches only in the required frequency band for the communication signal of the wired communication of the wired communication device so as not to interfere in the radiation wave with respect to the second wireless communication devices, wired When viewed from the network side, it is possible to avoid unnecessary insertion of notches into the communication signal of the wired communication. For example, when the use frequency band of the wireless communication device is not required around the wired network (specifically, in the case of a shortwave broadcast or the like, the shortwave radio receiver does not receive the shortwave broadcast). Does not insert a notch in that frequency band. Thereby, the communication capacity of the wired communication can be increased.
Moreover, in the notch insertion method according to the first aspect, when the wireless communication device around the wired network determines that it is necessary to insert a notch into the communication signal of the wired communication, information for specifying the wireless communication device Since the wireless communication device information registration step of registering (for example, identification information of the wireless communication device) in the storage unit of the wireless communication device is included, the necessary frequency for inserting a notch into the communication signal of the wired communication In the range where the wired network can affect the wireless communication devices existing in the vicinity by registering the information of the wireless communication device informing the information about the band in the wireless communication device, a notch is added to the communication signal of the wired communication. Information on the wireless communication apparatus that needs to be inserted can be held. By doing so, it is possible to insert a notch into the communication signal of the wired communication at a higher speed than in the prior art.

In the notch insertion method according to the second aspect of the present invention, when the wireless communication device around the wired network determines that it is necessary to insert a notch into the communication signal of the wired communication, the wireless communication device A wireless communication device information registration step for registering information (for example, identification information of the wireless communication device) in the storage unit of the wireless communication device may be further included. Thus, the wired network exists in the vicinity by registering information on the wireless communication device that informs the wireless communication device of information related to the necessary frequency band for inserting a notch into the communication signal of the wired communication. As long as the wireless communication device can be affected, information on the wireless communication device that needs to insert a notch into the communication signal of the wired communication can be held. By doing so, it is possible to insert a notch into the communication signal of the wired communication at a higher speed than in the prior art.

Further, in the notch insertion method according to the first aspect and the second aspect of the present invention, the second wireless communication device unit needs a frequency band used for the second wireless communication in the wireless communication device around the wired network. If it is determined that, in the wireless communication device around the wired network, a necessary frequency band information registration step of registering information on the required frequency band of the second wireless communication device unit in the storage unit of the wireless communication device, The first wireless communication notifies the wireless communication device registered in the storage unit of the wireless communication device of information identifying the wireless communication device and information regarding a necessary frequency band of the second wireless communication device unit of the wireless communication device. Thus, the wireless communication apparatus registered in the storage unit may further include a sharing step for sharing the information. By doing this, it is possible to hold the position information of notch insertion in the communication signal of the wired communication based on the information on the necessary frequency band and share the information between the wireless communication devices registered in the storage unit. .

In the notch insertion method according to the first aspect and the second aspect of the present invention, when information related to the state of the wireless communication device changes in the wireless communication device around the wired network, the wireless communication device An update step of updating information specifying a wireless communication device registered in the storage unit and information on a necessary frequency band; and in the wireless communication device around the wired network, the wireless communication to the wireless communication device registered in the storage unit A notification step of notifying information identifying a device and information regarding a necessary frequency band of the second wireless device unit of the wireless communication device by the first wireless communication may be further included. As described above, when a change occurs in information related to the state of the wireless communication device, information for specifying the wireless communication device and information on a necessary frequency band of the second wireless device unit of the wireless communication device are updated. Thus, the latest information can be obtained without each communication device searching for the information.

As described above, according to the present invention, when viewed from the wired network side, it is possible to avoid unnecessary notch insertion into a communication signal for wired communication, thereby increasing the communication capacity of the wired communication. that Roh pitch insertion method can be provided.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a conceptual diagram schematically showing an example of a notch insertion system that includes a wired communication device according to an embodiment of the present invention and that performs the notch insertion method according to the present invention.

  A notch insertion system 100 shown in FIG. 1 includes a wired communication system 10 that performs wired communication between a plurality of wired communication devices 12 connected to each other via a wired network 11. In the vicinity of the wired communication system 10, for example, there is a wireless communication system 20 that performs first wireless communication between a plurality of wireless communication devices 22 connected to each other via a wireless network 21.

  The wired communication device 12 includes a wired communication device unit 121 and a wireless communication device unit 122. The wired communication device unit 121 performs wired communication (for example, power line communication (PLC)) via the wired network 11. Therefore, it is possible to exchange information of wired communication between the wired communication device sections 121 of the wired communication devices 12 via the wired network 11.

  The wireless communication device unit 122 can perform the first wireless communication (for example, wireless LAN communication) regardless of the generation of radiated electromagnetic waves from the wired network 11 by the wired communication. That is, the wireless communication device unit 122 can perform the first wireless communication even when interference of radiated electromagnetic waves from the wired network 11 due to the wired communication occurs. Therefore, it is possible to exchange information of the first wireless communication between the wireless communication device units 122 of the wired communication devices 12 via the wireless network 21.

  The wireless communication device 22 includes a first wireless communication device unit 221 and a second wireless communication device unit 222. The first wireless communication device unit 221 transmits the first wireless communication (for example, wireless LAN communication) to the wireless communication device unit 122 of the wired communication device 12 regardless of the generation of radiated electromagnetic waves from the wired network 11 by the wired communication. Etc.). That is, the first wireless communication device unit 221 transmits the first wireless communication to the wireless communication device unit 122 of the wired communication device 12 even when interference of radiated electromagnetic waves from the wired network 11 due to the wired communication occurs. Can be done. Therefore, via the wireless network 21, between the first wireless communication device units 221 of each wireless communication device 22, and between the wireless communication device unit 122 of the wired communication device 12 and the first wireless communication device unit 221 of the wireless communication device 22. Information exchange of the first wireless communication is possible.

  The second wireless communication device unit 222 performs second wireless communication (for example, amateur wireless communication, short-wave radio reception, etc.) that can receive interference of radiation electromagnetic waves from the wired network 11 by the wired communication.

  Then, the wireless communication device unit 122 of the wired communication device 12 transmits information on the necessary frequency band required by the second wireless communication device unit 222 of the wireless communication device 22 from the wireless communication device 22 at the time of the processing. When received by communication, the wired communication device unit 121 of the wired communication device 12 receives the radiation electromagnetic wave with respect to the second wireless communication of the wireless communication device 22 based on the information regarding the necessary frequency band received from the wireless communication device 22. A notch is inserted in the communication signal of the wired communication so as not to cause interference.

  In the notch insertion system 100 shown in FIG. 1, the existing wireless communication device 22 existing in the vicinity grasps information on a necessary frequency band required by the second wireless communication device unit 222 at the time of the processing, and the existing wireless communication device The data is transmitted to the wireless communication device unit 122 of the wired communication device 12 connected to the wired network 11 via the wireless network 21 based on the first wireless communication constructed by the device 22.

  The wired communication device 12 receives from the wireless communication device 22 information regarding the necessary frequency band required by the second wireless communication device unit 222 of the wireless communication device 22 at the wireless communication device unit 122, and Based on the information about the necessary frequency band, a notch is inserted into the communication signal of the wired communication so as not to cause interference of the radiated electromagnetic wave with respect to the second wireless communication of the wireless communication device 22. By doing so, when viewed from the wired network 11 side, unnecessary notch insertion into the communication signal of the wired communication can be avoided, and thereby the communication capacity of the wired communication can be increased.

  FIG. 2 is a schematic diagram illustrating a state of a notch inserted into the communication signal of the wired communication, and FIG. 2A illustrates the use of the wired communication signal in an existing wireless communication device. FIG. 2B is a diagram illustrating a state in which notches are inserted in all frequency bands in which the frequency band is assumed to be, and FIG. FIG. 2C is a diagram illustrating a state in which a notch is inserted into the communication signal for wired communication by the notch insertion system 100 illustrated in FIG. 1 with respect to the communication signal for wired communication. It is.

  In the notch insertion state shown in FIG. 2A, the notch is inserted into an unused frequency band and a frequency band that does not require a wireless communication device, so the communication capacity is significantly reduced. In addition, in the notch insertion state shown in FIG. 2 (b), although notches are not inserted into unused frequency bands, but notches are inserted into frequency bands that are not required by the wireless communication device, so that the communication capacity is increased accordingly. Decreases. On the other hand, in the notch insertion system 100 shown in FIG. 1, as shown in FIG. 2C, notches are inserted only in the necessary frequency band required by the wireless communication device (in other words, unused). Since notches are not inserted not only in the frequency band but also in the frequency band where the wireless communication device is not necessary, the communication capacity can be increased accordingly.

In the present embodiment, the notch insertion system 100 can be configured as follows. That is,
(Wired network notification to wireless communication device)
The wired communication device 12 is configured to notify the wireless communication device 22 that the wired network 11 is present by the first wireless communication.
(Determining the need for notch insertion)
The wireless communication device 22 detects the reception state of the notification from the wired communication device 12, and determines whether or not it is necessary to insert a notch in the communication signal of the wired communication according to the detected reception state. It is configured.
(Determination of necessity of frequency band)
When the wireless communication device 22 determines that it is necessary to insert a notch into the communication signal for wired communication, the second wireless communication device unit 222 needs the frequency band used for the second wireless communication at the time of the processing. It is configured to determine whether or not to perform.
(Send information about required frequency band to wired communication devices)
When the wireless communication device 22 determines that the second wireless communication device unit 222 needs the frequency band used for the second wireless communication, the wireless communication device 22 provides information on the necessary frequency band required by the second wireless communication device unit 222. It is configured to transmit to the wired communication device 12 by the first wireless communication. In this case, when the wireless communication device 22 determines that the second wireless communication device unit 222 needs the frequency band used for the second wireless communication, the wireless communication device 22 provides information (for example, table information) for specifying the wireless communication device 22. You may be comprised so that it may transmit to the wired communication apparatus 12 by the said 1st wireless communication with the information regarding the said required frequency band. A typical example of the information specifying the wireless communication device 22 is an ID (identification information) of the wireless communication device 22. Further, examples of the ID of the wireless communication device 22 include an IP (Internet Protocol) address.

In the present embodiment, the notch insertion system 100 may be further configured as follows. That is,
(Sends update information about required frequency band to wired communication devices)
The wireless communication device 22 is configured to transmit information related to the necessary frequency band to the wired communication device 12 by the first wireless communication when information related to the state of the wireless communication device 22 changes. preferable. In this case, when the information related to the state of the wireless communication device 22 changes, the wireless communication device 22 transmits the table information together with the information on the necessary frequency band to the wired communication device 12 by the first wireless communication. It may be configured.
(Registration of information specifying the wireless communication device)
When the wireless communication device 22 determines that it is necessary to insert a notch in the communication signal of the wired communication, information for identifying the wireless communication device 22 (hereinafter referred to as table information of the wireless communication device 22) is the wireless communication device. It is preferably configured to register in the storage unit 227 of the communication device 22. In this case, in the wireless communication device 22, the second wireless communication device unit 222 of the wireless communication device 22 corresponding to the table information registered in the storage unit 227 requires the use frequency band of the second wireless communication at the time of the processing. Or may be configured to determine whether or not.
(Registration of information about required frequency band)
When the wireless communication device 22 determines that the second wireless communication device unit 222 needs the frequency band used for the second wireless communication, the wireless communication device 22 stores information on the necessary frequency band of the second wireless communication device unit 222. It may be configured to register with.
(Sharing table information and necessary frequency band information with other wireless communication devices)
In the case where the wireless communication device 22 is configured to register the table information and information related to the necessary frequency band in the storage unit 227, the wireless communication device 22 performs wireless communication corresponding to the table information registered in the storage unit 227. By notifying the device 22 of the table information and the information on the necessary frequency band of the second wireless communication device 222 of the wireless communication device 22 by the first wireless communication, the wireless corresponding to the table information registered in the storage unit 227 is obtained. The communication device 22 may be configured to share the information.
(Update of table information and necessary frequency band information)
When the wireless communication device 22 is configured to register the table information and information about the necessary frequency band in the storage unit 227, the wireless communication device 22 changes information related to the state of the wireless communication device 22. It is preferable that the table information registered in the storage unit 227 and the information related to the necessary frequency band are updated.
(Notification of update information to other wireless communication devices)
The wireless communication device 22 is configured to notify the wireless communication device 22 corresponding to the table information registered in the storage unit 227 of the table information and information on the necessary frequency band through the first wireless communication. Is preferred.
(Registration of information about required frequency band)
The wired communication device 12 may be configured to register information regarding the necessary frequency band received from the wireless communication device 22 in the storage unit 124 of the wired communication device 12.
(Sharing information about required frequency band with other wired communication devices)
The wired communication device 12 notifies the information related to the necessary frequency band registered in the storage unit 124 to the other wired communication device 12 by the wired communication or the first wireless communication. It may be configured to share information.
(Update of information on necessary frequency band)
The wired communication device 12 is preferably configured to update the information regarding the necessary frequency band registered in the storage unit 124 when information related to the state of the wireless communication device 22 changes.
(Notification of update information to other wired communication devices)
The wired communication device 12 is preferably configured to notify the information related to the updated necessary frequency band to the other wired communication device 12 by the wired communication or the first wireless communication.

  Further, the wired communication device 12 may be configured as follows. That is, when the wired communication device 12 receives the table information and the information about the necessary frequency band from the wireless communication device 22, it registers the table information and the information about the necessary frequency band received from the wireless communication device 22 in the storage unit 124. It may be configured to. In this case, the wired communication device 12 notifies the other wired communication device 12 of the table information registered in the storage unit 124 and the information on the necessary frequency band to the other wired communication device 12 by the wired communication or the first wireless communication. It may be configured to share the information with the communication device 12.

  Further, when the wired communication device 12 is configured to register the table information and the information on the necessary frequency band in the storage unit 124, when the information related to the state of the wireless communication device 22 changes, The table information registered in the storage unit 124 and the information related to the necessary frequency band may be updated.

  Then, the wired communication device 12 may be configured to notify the updated table information and information on the necessary frequency band to the other wired communication device 12 by the wired communication or the first wireless communication.

  The notch insertion system 100 shown in FIG. 1 executes the following notch processing step when inserting a notch into the communication signal of the wire communication.

  That is, the notch processing step includes a network notification step, a determination step, a determination step, a transmission step, and a notch insertion step.

  In the network notification step, the wired communication device 12 notifies the wireless communication device 22 that the wired network 11 is present by the first wireless communication. In the determining step, the wireless communication device 22 around the wired network 11 detects the reception state of the notification from the wired communication device 12, and inserts a notch into the communication signal of the wired communication according to the detected reception state. Decide if you need to.

  In the determination step, when the wireless communication device 22 around the wired network 11 determines that it is necessary to insert a notch into the communication signal of the wired communication, the use frequency band of the second wireless communication is set to the second wireless communication. The apparatus unit 222 determines whether or not it is necessary at the time of the processing. In the transmission step, in the wireless communication device 22 around the wired network 11, when the second wireless communication device unit 222 determines that the second wireless communication device unit 222 needs the use frequency band of the second wireless communication, the second wireless communication device unit 222 Information related to a necessary frequency band is transmitted to the wired communication device 12 by the first wireless communication. In this case, when the wireless communication device 22 around the wired network 11 determines that the second wireless communication device unit 222 needs the frequency band used for the second wireless communication, the table information of the wireless communication device 22 is stored in the table information. You may transmit to the wired communication apparatus 12 by the said 1st wireless communication with the information regarding a required frequency band.

  Then, in the notch insertion step, the wired communication device 12 gives interference of the radiated electromagnetic wave to the second wireless communication of the wireless communication device 22 based on the information regarding the necessary frequency band received from the wireless communication device 22. A notch is inserted into the communication signal of the wire communication so as not to be present.

  Preferably, the notch processing step further includes an update information transmission step. In the update information transmission step, when the information related to the state of the wireless communication device 22 changes in the wireless communication device 22 around the wired network 11, the information about the necessary frequency band is transmitted to the wired communication device 12. Send by communication. In this case, in the wireless communication device 22 around the wired network 11, when the information related to the state of the wireless communication device 22 changes, the table information is sent to the wired communication device 12 together with the information on the necessary frequency band. You may be comprised so that it may transmit by communication.

  The notch processing step preferably further includes a wireless communication device information registration step. In this wireless communication device information registration step, when the wireless communication device 22 around the wired network 11 determines that it is necessary to insert a notch into the communication signal of the wired communication, the table information of the wireless communication device 22 is stored in the wireless communication device information registration step. Register in the storage unit 227 of the wireless communication device 22. In this case, in the determination step, in the wireless communication device 22 around the wired network 11, the second wireless communication device unit 222 of the wireless communication device 22 corresponding to the table information registered in the storage unit 227 performs the second processing at the time of the processing. It can be determined whether or not a use frequency band for wireless communication is required.

  The notch processing step may further include a necessary frequency band information registration step. In this necessary frequency band information registration step, when it is determined that the second wireless communication device unit 222 needs the frequency band used for the second wireless communication in the wireless communication device 22 around the wired network 11, the second wireless communication device 22 Information related to the necessary frequency band of the communication device unit 222 is registered in the storage unit 227.

  The notch processing step may further include a wireless communication device side sharing step. In this wireless communication device side sharing step, when the wireless communication device 22 registers the table information and the information on the necessary frequency band in the storage unit 227, the wireless communication device 22 around the wired network 11 registers in the storage unit 227. By notifying the table information and the information about the necessary frequency band of the second wireless communication device 222 of the wireless communication device 22 to the wireless communication device 22 corresponding to the table information by the first wireless communication, the storage unit 227 is notified. The information is shared with the wireless communication device 22 corresponding to the registered table information.

  Here, information related to the state of the wireless communication device 22 existing in the vicinity (for example, information related to a necessary frequency band required by the wireless communication device 22) is expected to change with time. The procedure to update is required. Therefore, it is preferable that the notch processing step further includes a wireless communication device side updating step. In this wireless communication device side update step, when the wireless communication device 22 registers the table information and the information on the necessary frequency band in the storage unit 227, the wireless communication device 22 in the vicinity of the wired network 11 performs the wireless communication device 22 When the information related to the state changes, the table information registered in the storage unit 227 and the information on the necessary frequency band are updated.

  The notch processing step preferably further includes a wireless communication device side notification step. In this wireless communication device side notification step, in the wireless communication device 22 around the wired network 11, the table information and the information on the necessary frequency band are sent to the wireless communication device 22 corresponding to the table information registered in the storage unit 227. Notify by wireless communication.

  When the information related to the state of the wireless communication device 22 changes, the elements for determining the update timing of the information related to the necessary frequency band include the information related to the used frequency band of the second wireless communication device unit 222, the second wireless Information on the required frequency band of the communication device unit 222 (for example, information on the ON / OFF state of the switch of the second wireless communication device unit 222), and that the wired network 11 from the wireless communication device unit 122 in the wired communication device 12 exists. Information regarding whether or not to receive information to be notified (for example, beacon) can be exemplified. When at least one of these pieces of information changes, the information on the necessary frequency band and the table information of the wireless communication device 22 can be updated.

  The notch processing step may further include a wired communication device side registration step. In the wired communication device side registration step, the wired communication device 12 registers information related to the necessary frequency band received from the wireless communication device 22 in the storage unit 124. In this case, the notch processing step may further include a wired communication device side sharing step. In the wired communication device side sharing step, the wired communication device 12 notifies the other wired communication device 12 of information related to the necessary frequency band registered in the storage unit 124 by the wired communication or the first wireless communication. The information is shared with other wired communication devices 12.

  The notch processing step may further include a wired communication device side updating step. In this wired communication device side update step, when the information related to the state of the wireless communication device 22 changes in the wired communication device 12, the information regarding the necessary frequency band registered in the storage unit 124 is updated.

  The notch processing step may further include a wired communication device side notification step. In the wired communication device side notification step, the wired communication device 12 notifies the information related to the updated necessary frequency band to the other wired communication device 12 by the wired communication or the first wireless communication.

  In the wired communication device side registration step, when the table information and the information on the necessary frequency band are received from the wireless communication device 22 in the wired communication device 12, the table information and the necessary frequency received from the wireless communication device 22 are received. Information regarding the band may be registered in the storage unit 124. In this case, in the wired communication device side sharing step, in the wired communication device 12, the table information registered in the storage unit 124 and the information on the necessary frequency band are transmitted to the other wired communication device 12 by the wired communication or the first wireless communication. By notifying, the information can be shared with the other wired communication device 12.

  By the way, since the space (range) in which the wired network 11 affects the surrounding wireless communication devices 22 is limited, the wireless communication device 22 that is not affected by the wired network 11 may be a target. As a result, unnecessary notch insertion occurs. Further, although communication resources for sharing the information on the necessary frequency band and the table information of the wireless communication device 22 with other surrounding wireless communication devices 22 and / or other surrounding wired communication devices 12 are necessary, Communication resources are wasted as long as the exchange of information is unnecessary. From this point of view, the notch insertion system 100 shown in FIG. 1 determines a range in which the wired network 11 can affect the wireless communication device 22 existing in the vicinity, and the wireless communication device 22 and / or the wired communication device 12 within the range. However, it is preferable that information on the necessary frequency band and table information of the wireless communication device 22 are held and shared. In this way, unnecessary notches for the communication signal of the wired communication can be further avoided, and waste of communication resources of the wireless network 21 existing in the vicinity can be avoided.

  Further, in the wired communication device side update step, when the table information and the information on the necessary frequency band are registered in the storage unit 124 in the wired communication device 12, information related to the state of the wireless communication device 22 changes. In this case, the table information registered in the storage unit 124 and the information related to the necessary frequency band may be updated.

  In the wired communication device-side notification step, the wired communication device 12 notifies the updated table information and information on the necessary frequency band to the other wired communication device 12 by the wired communication or the first wireless communication. Good.

  More specifically, the notch insertion system 100 shown in FIG. 1 will be described. A wired communication system 10 includes power line communication (wireline communication) between a plurality of wired communication devices 12 connected to each other via a wired network (for example, a home network) 11. PLC system that performs PLC). In this PLC system, the wired communication device 12 can be an electronic device such as a home appliance equipped with a PLC device that is an example of the wired communication device unit 121 and a wireless LAN device that is an example of the wireless communication device unit 122. The wireless communication device unit 122 of the wired communication device 12 and the first wireless communication device unit 221 of the wireless communication device 22 can be connected to a wireless LAN system that performs wireless LAN communication via a wireless LAN network. The wireless communication device 22 includes an amateur wireless device and a shortwave radio receiving device on which a wireless LAN device that is an example of the first wireless communication device unit 221 and a wireless device that is an example of the second wireless communication device unit 222 are mounted. Can be done. That is, the notch insertion system 100 is constructed in a form in which both wired and wireless are mixed as a wired network connection form.

  FIG. 3 is a block diagram schematically showing a hardware configuration of the wired communication device 12 shown in FIG. The wired communication device 12 includes a communication control unit 123 having a CPU and a memory (not shown) in addition to the wired communication device unit 121 and the wireless communication device unit 122. The memory stores various communication control programs and includes a ROM and a RAM. The communication control unit 123 reads out various communication control programs from the memory by the CPU and executes the read communication control program so as to perform communication control of the wired communication device unit 121 and the wireless communication device unit 122. It is configured.

  The wireless communication device unit 122 includes a wireless communication unit 130 that performs the first wireless communication, and information on the necessary frequency band from the first wireless communication device unit 221 of the wireless communication device 22 that exists in the vicinity, and the wireless communication device 22. The table information is received by the first wireless communication. Examples of the information related to the necessary frequency band include not only the value of the necessary frequency band but also information on the notch insertion position in the communication signal of the wired communication created based on the necessary frequency band. . Here, the notch insertion position information refers to position information for inserting a notch into a frequency band in the communication signal of the wired communication.

  Therefore, the wireless communication device 22 may be configured to set a notch insertion position to the communication signal for wired communication based on the information on the necessary frequency band. In this case, the wireless communication device 22 can be configured to transmit the notch insertion position to the wired communication device 12. In addition, when the wireless communication device 22 is configured to transmit the necessary frequency band to the wired communication device 12, the wired communication device 12 may use the wired communication based on the necessary frequency band received from the wireless communication device 22. The notch insertion position can be set in the communication signal.

  In addition, the wireless communication device unit 122 uses the first wireless communication to transmit the information related to the necessary frequency band from the wireless communication devices 22 existing in the vicinity and the table information of the wireless communication device 22 to the wireless communication devices of the other wired communication devices 12. It has a function to transmit / receive to / from the unit 122. Instead of or in addition to this, the wired communication device unit 121 uses the wired communication to transmit information related to the necessary frequency band from the wireless communication device 22 existing in the vicinity and table information of the wireless communication device 22 to the other wired communication device 12. A function of transmitting / receiving data to / from the wired communication device unit 121.

  Specifically, the wired communication device unit 121 includes a storage unit 124, an information notification unit 125, a notch insertion position setting unit 126, a wired transmission unit 127, a wired reception unit 128, and a signal / power supply coupling unit (coupler) 129. And.

  The storage unit 124 registers and updates information about the necessary frequency band and table information received from the wireless communication devices 22 existing in the vicinity. With this storage unit 124, the wired communication device 12 can hold information on the necessary frequency band and table information of the wireless communication device 22.

  The information notification unit 125 notifies the first wireless communication device unit 221 of the wireless communication device 22 existing in the vicinity from the wireless communication device unit 122 that the wired network 11 exists nearby by the first wireless communication. . A typical example of the information for notifying that the wired network 11 exists is a beacon. In this case, the information notification unit 125 may be a beacon generation unit that generates a beacon. The wireless communication device unit 122 has a function of transmitting information (hereinafter referred to as a beacon) for notifying that the wired network 11 exists to the first wireless communication device unit 221 of the wireless communication device 22.

  The notch insertion position setting unit 126 sets a notch insertion position to the communication signal of the wired communication based on the necessary frequency band, and notifies the wired transmission unit 127 of information on the set notch insertion position. It has become. The wired transmission unit 127 transmits a communication signal to the wired network 11 via the coupler 129. The wired transmission unit 127 generates a tone mask based on the information on the notch insertion position. Here, the tone mask is a used / unused pattern for each frequency for the communication signal of the wire communication. That is, a number is assigned to each frequency for the wired communication signal. Therefore, the wired transmission unit 127 can set the use / non-use of the tone by designating the frequency number. By doing so, a notch can be inserted in the communication signal of the wire communication. The wired receiving unit 128 receives a communication signal transmitted from the wired network 11 via the coupler 129. The coupler 129 inputs / outputs a power line communication signal to / from the power line.

  FIG. 4 is a block diagram schematically showing a hardware configuration of the wireless communication device 22 shown in FIG. In addition to the first wireless communication device unit 221 and the second wireless communication device unit 222, the wireless communication device 22 includes a communication control unit 223 having a CPU and a memory (not shown). The memory stores various communication control programs and includes a ROM and a RAM. The communication control unit 223 reads out various communication control programs from the memory and executes the read communication control program by the CPU, thereby controlling the communication of the first wireless communication device unit 221 and the second wireless communication device unit 222. Is configured to do.

  Here, in order to always form the wireless network 21, the first wireless communication device unit 221 is always in an operating state regardless of the ON / OFF state of the second wireless communication device unit 222.

  The second wireless communication device 222 is configured to turn ON / OFF the second wireless communication with the second wireless communication unit 224 that performs the second wireless communication that can receive the interference of the radiation electromagnetic wave from the wired network 11 by the wired communication. Switch 225.

  The second wireless communication device unit 222 can transmit information on the used frequency band used in the second wireless communication unit 224 from the second wireless communication unit 224 to the first wireless communication device unit 221. In addition, the second wireless communication device unit 222 can transmit information (ON / OFF signal) on the operating state of the second wireless communication device unit 222 from the switch 225 to the first wireless communication device unit 221. As a result, when the switch 225 of the second wireless communication device unit 222 is in the ON state, the first wireless communication device unit 221 determines the frequency band used for the second wireless communication when the second wireless communication device unit 222 performs the processing. It can be determined that it is necessary. Further, the first wireless communication device unit 221 requires the second wireless communication device unit 222 to use the frequency band used for the second wireless communication when the switch 225 of the second wireless communication device unit 222 is OFF. It can be judged that it is not.

  In addition, the first wireless communication device unit 221 includes the first wireless communication unit 230 that performs the first wireless communication, and determines that the second wireless communication device unit 222 needs the frequency band used for the second wireless communication. In this case, there is a function of transmitting information on the necessary frequency band and table information of the wireless communication device 22 to the wireless communication device unit 122 of the wired communication device 12. Further, the first wireless communication device unit 221 has a function of receiving a beacon transmitted from the wireless communication device unit 122 of the wired communication device 12. The first wireless communication device unit 221 has a function of transmitting information on the necessary frequency band and table information of the wireless communication device 22 to the wireless communication device unit 122 of the wired communication device 12 by the first wireless communication. In addition, the first wireless communication device unit 221 transmits / receives information on the necessary frequency band and table information of the wireless communication device 22 to / from the first wireless communication device unit 221 of another wireless communication device 22 by the first wireless communication. It has the function to do.

  The first wireless communication device unit 221 sets notch insertion position information based on the beacon, the information indicating whether the second wireless communication device unit 222 requires a frequency band, and the information on the used frequency band. To memorize.

  Specifically, the first wireless communication apparatus unit 221 further includes a use frequency band notification unit 226, a storage unit 227, an information reception determination unit 228, and a switch ON / OFF detection unit 229.

  The used frequency band notification unit 226 notifies the storage unit 227 of the used frequency band of the second wireless communication device unit 222. The storage unit 227 registers and updates information related to the necessary frequency band and table information of the wireless communication device 22.

  The information reception determination unit 228 determines whether or not the first wireless communication device unit 221 has received a beacon from the wireless communication device unit 122 of the wired communication device 12, and determines that the wireless communication device 22 has received the beacon. The table information is notified to the storage unit 227 for registration. As a result, a range in which the wired network 11 can affect the wireless communication devices 22 existing in the vicinity can be determined, and the table information of the wireless communication device 22 can be held in the wireless communication devices 22 within the range. .

  Specifically, the information reception determination unit 228 determines whether or not it is necessary to insert a notch into the communication signal of the wired communication based on the reception level of the beacon received from the wired communication device 12. Specifically, since the level of the beacon reception level is considered to be one index for measuring the degree of radio wave interference, the information reception determination unit 228 responds to the beacon reception level received from the wired communication device 12. (Specifically, when the reception level is equal to or higher than a predetermined reception level), the table information of the wireless communication device 22 is notified to the storage unit 227 for registration. On the other hand, as a result of determination by the information reception determination unit 228, the wireless communication device 22 that is not registered in the table information of the storage unit 227 can be determined not to receive radio wave interference from the wired network 11.

  The switch ON / OFF detection unit 229 detects the ON / OFF state of the second wireless communication device unit 222 by the switch 225. The switch ON / OFF detection unit 229 may detect the power supplied to the second wireless communication device unit 222 in order to turn on the second wireless communication device unit 222.

  The switch ON / OFF detection unit 229 determines whether or not the second wireless communication device unit 222 is in the ON state, and when it is determined that the second wireless communication device unit 222 is in the ON state, the use frequency band notification The frequency band used from the unit 226 is notified to the storage unit 227 as information related to the necessary frequency band and registered, and the first wireless communication device 222 transmits the wireless communication device unit 122 of the wired communication device 12 through the first wireless communication. It comes to notify.

  Next, the operation of the notch insertion system 100 shown in FIG. 1 will be described with reference to FIGS. FIG. 5 is a flowchart showing an example of operation steps of the notch insertion system 100 shown in FIG. FIG. 6 is a diagram illustrating a state in which the first wireless communication is performed between the wired communication device 12 and the wireless communication device 22 in the notch insertion system 100 illustrated in FIG. 1. FIG. 7 is a diagram showing an operating state in the notch insertion system 100 shown in FIG.

  In the notch insertion system 100 shown in FIG. 1, first, the wired communication device 12 notifies the wireless communication device 22 that the wired network 11 exists by the first wireless communication (step S1). Specifically, a beacon notifying that the wired network 11 exists is transmitted to the surrounding wireless communication devices 22.

  Next, the wireless communication device 22 that has received the notification from the wired communication device 12 determines whether or not the notification that the wired network 11 exists is received (step S2), and determines that the notification that the wired network 11 exists is received. If so (step S2: YES), the table information of the wireless communication device 22 is registered in the storage unit 227 (step S3). Here, as a condition for registering the table information of the wireless communication device 22 in the storage unit 227, a wireless communication device that may use the frequency band used in the wired communication of the wired communication device 12, or such Other than the wireless communication device, a wireless communication device that forms a wireless network for notifying information on a necessary frequency band can be exemplified. On the other hand, if it is determined that the notification that the wired network 11 exists is not received (step S2: NO), the storage unit 227 is set to a state in which the table information of the wireless communication device 22 is not registered (step S4). ), The process proceeds to step S5.

  Whether or not the second wireless communication device unit 222 of the wireless communication device 22 registered in the storage unit 227 requires the use frequency band of the second wireless communication in the wireless communication device 22 that has received the notification from the wired communication device 12. Is discriminated (step S5). Specifically, it is determined whether or not the second wireless communication device unit 222 needs the use frequency band of the second wireless communication based on the ON / OFF state of the switch 225 in the second wireless communication device unit 222. That is, if the switch 225 is in the ON state, it is determined that it is necessary. On the other hand, if the switch 225 is in the OFF state, it is determined that it is unnecessary.

  When it is determined that the second wireless communication device unit 222 needs the frequency band used for the second wireless communication (step S5: YES), the table information of the wireless communication device 22 is registered in the storage unit 227, and the storage is performed. The information about the necessary frequency band registered in the unit 227 and the table information are notified to the wireless communication device 22 registered in the storage unit 227 by the first wireless communication, so that the wireless communication device 22 registered in the storage unit 227 and the table Information is shared (step S6). Further, information on the necessary frequency band registered in the storage unit 227 and table information are transmitted to the wired communication device 12 by the first wireless communication (step S7).

  In the wired communication device 12, information and table information related to the necessary frequency band received from the wireless communication device 22 are registered in the storage unit 124, and information and table information related to the necessary frequency band registered in the storage unit 124 are stored in the wired network 11. By notifying the other wired communication device 12 to be constructed through the wired network 11 or the wireless network 21 by the wired communication or the first wireless communication, the information is shared with the other wired communication device 12 ( Step S8). Thus, in each wired communication device 12 of the wired network 11, the frequency band into which the notch is inserted into the communication signal when the wired communication device unit 121 performs the wired communication is grasped.

  Then, in the wired communication device 12, based on the information on the necessary frequency band registered in the storage unit 124, the wired communication is performed so that the radiation electromagnetic wave interference is not given to the second wireless communication of the wireless communication device 22. A notch is inserted in the communication signal (step S9), and the process proceeds to step S10. On the other hand, when it is determined in step S5 that the second wireless communication device unit 222 does not need the use frequency band of the second wireless communication (step S5: NO), the process proceeds to step S10.

  Next, it is determined whether or not the information related to the state of the wireless communication device 22 has changed (step S10), and when the information related to the state of the wireless communication device 22 has not changed (step S10: NO). Then, it is determined whether or not the process is finished (step S11). Here, when the process is continued (step S11: NO), the process proceeds to step S10, and when information related to the state of the wireless communication device 22 changes (step S10: YES), the process of steps S1 to S10 is performed. Execute. For example, when the switch 225 of the second wireless communication device unit 222 in the wireless communication device 22 existing around the wired network 11 changes from the OFF state to the ON state (or from the ON state to the OFF state), the frequency band is necessary (or It can be determined that it is unnecessary. This notifies the wireless communication device 22 and the wired communication device 12 existing in the vicinity of the table information and information about the necessary frequency band and shares them with the fact that the state has changed as a trigger. To do. As described above, in order to update the information when the information related to the necessary frequency band changes, it is not necessary for each of the communication apparatuses 12 and 22 to perform a search related to the information.

BRIEF DESCRIPTION OF THE DRAWINGS It is a conceptual diagram which shows typically an example of the notch insertion system which comprises the wired communication apparatus of one Embodiment which concerns on this invention, and implements the notch insertion method which concerns on this invention. FIG. 5A is a schematic diagram illustrating a state of notches inserted in a communication signal for wired communication, and FIG. 5A illustrates all frequencies assumed to be used in an existing wireless communication apparatus for a communication signal for wired communication. FIG. 5B is a diagram showing a state in which notches are inserted into bands, and FIG. 5B is a diagram showing a state in which notches are not inserted in unused frequency bands by a conventional method with respect to communication signals for wired communication. (C) is a figure which shows the state which inserted the notch into the communication signal of wired communication with respect to the communication signal of wired communication by the notch insertion system shown in FIG. FIG. 2 is a block diagram schematically showing a hardware configuration of the wired communication device shown in FIG. 1. It is a block diagram which shows roughly the hardware constitutions of the radio | wireless communication apparatus shown in FIG. It is a flowchart which shows an example of the operation | movement step of the notch insertion system shown in FIG. In the notch insertion system shown in FIG. 1, it is a figure which shows the state which is performing 1st wireless communication between a wired communication apparatus and a wireless communication apparatus. It is a figure which shows the operation state in the notch insertion system shown in FIG. It is a conceptual diagram which shows the conventional radio | wireless communications system typically, Comprising: The figure (a) is a figure which shows the communication state between different radio | wireless communication apparatuses, and the figure (b) is between the same radio | wireless communication apparatuses. It is a figure which shows a communication state. It is a figure for demonstrating the electromagnetic wave interference to the radio | wireless communications system which generate | occur | produces by the radiation electromagnetic wave from a wired communication system in a wired communication system and the radio | wireless communications system which exists around it. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure for demonstrating the state which gives interference to a radio | wireless communication apparatus by the radiation electromagnetic wave from a PLC system, Comprising: FIG. FIG. 2B is a schematic diagram showing the spectrum of the PLC signal and the radio wave usage status of the wireless communication device. It is a figure which shows the interference countermeasure example in the conventional PLC apparatus, Comprising: FIG. (A) is a conceptual diagram which shows typically a wire communication system and the radio | wireless communications system which exists in the periphery, FIG. It is the schematic which shows the example which inserted the notch in the frequency band used with a radio | wireless communication apparatus with respect to a PLC signal. FIG. 8A is a diagram showing problems of countermeasures against interference in a conventional PLC device, and FIG. 9A is a conceptual diagram schematically showing a wired communication system and a wireless communication system existing in the vicinity thereof. FIG. These are schematic diagrams for explaining that unnecessary notches are inserted in the PLC signal.

Explanation of symbols

11 wired communication system 10 wired network 12 wired communication device 121 wired communication device unit 122 wireless communication device unit 22 wireless communication device 221 first wireless communication device unit 222 second wireless communication device unit

Claims (5)

A method of inserting a notch into a communication signal of the wired communication in a wired communication system that performs wired communication between a plurality of wired communication devices connected to each other via a wired network,
A wired communication device that performs wired communication via the wired network; and a wireless communication device that is capable of performing first wireless communication regardless of the generation of radiated electromagnetic waves from the wired network by the wired communication. In the wired communication device, a first wireless communication device unit capable of performing the first wireless communication with the wireless communication device unit, and a first wireless communication device capable of receiving interference of radiation electromagnetic waves from the wired network by the wired communication. A network notification step of notifying, by the first wireless communication, that the wired network exists nearby to a wireless communication device including a second wireless communication device unit that performs two wireless communication;
Whether the wireless communication device around the wired network needs to detect a reception state of the notification from the wired communication device and insert a notch into the communication signal of the wired communication according to the detected reception state A decision step to determine whether or not
When the wireless communication device around the wired network determines that it is necessary to insert a notch in the communication signal of the wired communication, information identifying the wireless communication device is registered in the storage unit of the wireless communication device Wireless communication device information registration step;
In the wireless communication device around the wired network, when it is determined that it is necessary to insert a notch into the communication signal of the wired communication, the second wireless communication device unit determines the frequency band used for the second wireless communication. A determination step for determining whether or not it is necessary at the time of processing;
In the wireless communication device around the wired network, when it is determined that the second wireless communication device unit needs the frequency band used for the second wireless communication, the necessary frequency required by the second wireless communication device unit A transmission step of transmitting information about a band to the wired communication device by the first wireless communication;
In the wired communication device, communication of the wired communication so as not to give interference of the radiated electromagnetic wave to the second wireless communication of the wireless communication device based on information on the necessary frequency band received from the wireless communication device. notch insertion method characterized in that it comprises a notch insertion step of a state of inserting the notches only in the required frequency band for the signal. A method of inserting a notch into a communication signal of wired communication in a PLC system that performs wired communication of power line communication between a plurality of wired communication devices connected to each other via a wired network using a power line,
A wired communication device that performs wired communication via the wired network; and a wireless communication device that is capable of performing first wireless communication regardless of the generation of radiated electromagnetic waves from the wired network by the wired communication. In the wired communication device, a first wireless communication device unit capable of performing the first wireless communication with the wireless communication device unit, and a first wireless communication device capable of receiving interference of radiation electromagnetic waves from the wired network by the wired communication. A network notification step of notifying, by the first wireless communication, that the wired network exists nearby to a wireless communication device including a second wireless communication device unit that performs two wireless communication;
Whether the wireless communication device around the wired network needs to detect a reception state of the notification from the wired communication device and insert a notch into the communication signal of the wired communication according to the detected reception state A decision step to determine whether or not
In the wireless communication device around the wired network, when it is determined that it is necessary to insert a notch into the communication signal of the wired communication, the second wireless communication device unit determines the frequency band used for the second wireless communication. A determination step for determining whether or not it is necessary at the time of processing;
In the wireless communication device around the wired network, when it is determined that the second wireless communication device unit needs the frequency band used for the second wireless communication, the necessary frequency required by the second wireless communication device unit A transmission step of transmitting information about a band to the wired communication device by the first wireless communication;
In the wired communication device, communication of the wired communication so as not to give interference of the radiated electromagnetic wave to the second wireless communication of the wireless communication device based on information on the necessary frequency band received from the wireless communication device. A notch insertion step in which a notch is inserted only in the necessary frequency band with respect to the signal;
A notch insertion method comprising:   When the wireless communication device around the wired network determines that it is necessary to insert a notch in the communication signal of the wired communication, information identifying the wireless communication device is registered in the storage unit of the wireless communication device The notch insertion method according to claim 2, further comprising a wireless communication device information registration step. In the wireless communication device around the wired network, when it is determined that the second wireless communication device unit needs the frequency band used for the second wireless communication, information on the necessary frequency band of the second wireless communication device unit A necessary frequency band information registration step for registering in the storage unit of the wireless communication device;
In the wireless communication device around the wired network, information specifying the wireless communication device to the wireless communication device registered in the storage unit of the wireless communication device and a necessary frequency band of the second wireless communication device unit of the wireless communication device information to be to notify by the first wireless communication, as set forth in claim 1 or claim 3, further comprising a shared step of sharing a wireless communication device and the information registered in the storage unit Notch insertion method. In the wireless communication device around the wired network, when information related to the state of the wireless communication device changes, information for specifying the wireless communication device registered in the storage unit of the wireless communication device and information on a necessary frequency band An update step to update
In the wireless communication device around the wired network, information for identifying the wireless communication device to the wireless communication device registered in the storage unit and information on a required frequency band of the second wireless communication device unit of the wireless communication device The notch insertion method according to claim 4, further comprising a notification step of notifying by one wireless communication.

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