JP2013141114A - Communication device, communication method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which, since an access point requires a channel search and a radar search at a startup, it takes time until it becomes ready to be used by finding an idle channel from the startup.SOLUTION: The communication device according to the present invention comprises a determination part which determines whether or not a channel corresponding to a maximum bandwidth can be secured by referring to information of a network which an information channel stores.

Description

  The present invention relates to a communication apparatus forming a network, a communication method related to the communication apparatus, and a program.

  Generally, in a wireless LAN (Local Area Network) system, an access point performs a channel search when it is activated. When other access points exist in the vicinity, the access point selects and uses a channel that is not used by other access points in order to prevent interference.

  A part of the band in the 5 GHz band is used for aviation radar, weather radar, military radar, and the like. Therefore, in order to avoid such interference with the radar, for example, the access point performs a radar search for a predetermined time (for example, 1 minute) at the time of activation, and selects a channel in which no radar is present.

  As described above, as a technique to prevent interference with other access points and radar, an arbitration station is provided in the wireless LAN system, and the arbitration station adjusts and optimizes radio resources between each access point and radar. Is going. Such techniques are disclosed in, for example, Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4.

JP 2002-158667 A JP 2004-048356 A JP 2004-207839 A JP 2006-254398 A

  However, as disclosed in Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4, even if an arbitration station is provided in the wireless LAN system, the access point still has channel search and radar at startup. I had to do a search.

  Therefore, the access points disclosed in Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4 need to perform channel search and radar search at the time of activation. It took time to do it.

  The objective of this invention is providing the communication apparatus, the communication method, and program which can solve the subject mentioned above.

  The communication apparatus according to the present invention includes a determination unit that determines whether a channel corresponding to the maximum bandwidth can be secured by referring to network information stored in the information channel.

  The communication method according to the present invention is characterized by determining whether or not a channel corresponding to the maximum bandwidth of the communication apparatus can be secured by referring to the network information stored in the information channel.

  The program according to the present invention is characterized by causing a computer to execute processing for determining whether a channel corresponding to the maximum bandwidth of a communication device can be secured by referring to network information stored in an information channel.

  According to the present invention, the access point can quickly determine whether there is an empty channel without performing a channel search or a radar search.

It is the figure which showed the structural example of the communication apparatus by 1st Embodiment. It is the flowchart which showed the flow of the operation | movement by 1st Embodiment. It is the figure which showed the structural example of the communication system containing the access point by 2nd Embodiment. It is a figure which shows an example of the channel arrangement | positioning which each network uses in 2nd Embodiment. It is a figure which shows an example of the information which an information channel memorize | stores in 2nd Embodiment. It is the figure which showed the structural example of the access point by 2nd Embodiment. It is the flowchart which showed the flow of the operation | movement by 2nd Embodiment. It is a figure which shows an example of the channel arrangement | positioning which each network uses in 3rd Embodiment. In a 3rd embodiment, it is a figure showing an example of information which an information channel memorizes. It is the flowchart which showed the flow of the operation | movement by 3rd Embodiment. It is the flowchart which showed the flow of the operation | movement by 4th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
[Constitution]
FIG. 1 is a diagram illustrating a configuration of a communication apparatus 1000 according to the first embodiment. According to FIG. 1, the communication apparatus 1000 includes a determination unit 1001.

[Operation]
Next, the operation of the first embodiment will be described with reference to FIG. First, the determination unit 1001 refers to network information stored in the information channel (S1001). Next, the determination unit 1001 determines whether or not channels for the maximum bandwidth can be secured (S1002).

[effect]
The communication apparatus 1000 according to the first embodiment refers to network information stored in the information channel, and determines whether or not a channel for the maximum bandwidth can be secured.

  Therefore, the communication apparatus 1000 according to the first embodiment can quickly determine whether there is an empty channel without performing a channel search or a radar search.

[Second Embodiment]
Subsequently, a second embodiment of the present invention will be described.

[Constitution]
FIG. 3 shows a configuration example of a communication system according to the second embodiment. According to FIG. 3, the communication system includes five access points: access point 10, access point 20, access point 30, access point 40, and access point 50. Each of these five access points constitutes a network 1 such as a wireless LAN, a network 2, a network 3, a network 4, and a network 5. Hereinafter, each access point will be described as operating as a wireless LAN access point.

  The communication system of FIG. 3 further includes a radar 60 and a radar 70.

  Here, consider a case where the access point 10, the access point 20, the access point 30, the access point 40, the radar 60, and the radar 70 are activated in the communication system of FIG. In this case, a network 1, a network 2, a network 3, and a network 4 are configured.

  A case where a new access point 50 is activated in the above situation will be described below.

  FIG. 4 shows channels used in the 2 GHz band and the 5 GHz band by each network and each radar in FIG.

  The access points constituting each network are access points of the same wireless LAN, but have different wireless specifications, so that the occupied bands are different.

  The network 1 and the network 4 are wireless devices having specifications corresponding to IEEE 802.11ac, which is being standardized by the Institute of Electrical and Electronics Engineers (IEEE), and its maximum bandwidth is 80 MHz. The network 2 and the network 3 are wireless devices having specifications compatible with IEEE 802.11n, and the maximum bandwidth is 40 MHz. According to FIG. 4, the 2 GHz band is already in a state where there is no empty channel, and the 5 GHz band is also very congested, with only a few empty channels remaining in the W52 and W56 bands.

  Here, an “information channel” is set for 14 ch of the 2 GHz band. In the information channel, the channel used by each network and the channel state are collected and stored.

  FIG. 5 is a table showing an example of information stored in the information channel. The information channel stores information such as the wireless specifications of each network, the maximum bandwidth, the used channel (ch), the current state, the channel occupation time, and the assigned slave unit. Taking the network 1 as an example, the wireless specification of the network 1 is IEEE 802.11ac, the maximum bandwidth is 80 MHz, and the information channel stores that the used channel is 100 ch to 112 ch. Further, it is stored in the information channel that the network 1 is currently communicating and the channel occupation time is 19: 00-23: 00. For example, the network 1 can obtain a time zone with a high communication frequency from the past communication history, and can set the time zone with a high communication frequency as the channel occupation time.

  Further, it is stored in the network 1 that a slave device compatible with IEEE802.11ac and a slave device compatible with IEEE802.11a belong. As other information, it is also stored that the network 1 detects the radar 60 using 132 ch.

  The access points constituting each network periodically access the information channel, and the wireless specifications of its wireless LAN, the channel used, the current state, the channel occupation time, the information of the assigned slave unit, and the presence or absence of surrounding radar waves, Is sent. Each access point simultaneously receives these pieces of information and manages surrounding channel conditions. As a result, each access point can grasp in real time the specifications and peripheral information of all the access points installed in the receivable range.

  Next, the configuration of the access point 50 will be described. FIG. 6 shows a configuration example of the access point 50. According to FIG. 6, the access point 50 includes a determination unit 501, an activation unit 502, a control unit 503, and an information registration unit 504.

  The activation unit 502 is activated using the information channel when the access point 50 is activated.

  The determination unit 501 refers to the network information stored in the information channel when the access point 50 is activated. Further, the determination unit 501 determines whether or not a channel corresponding to the maximum bandwidth required by the network 5 formed by the access point 50 can be secured based on the network information stored in the information channel.

  If the result of determination by the determination unit 501 is that the access point 50 can secure a channel for the maximum bandwidth, the control unit 503 waits using the channel for the maximum bandwidth.

  Further, as a result of determination by the determination unit 501, if the access point 50 cannot secure a channel for the maximum bandwidth, the control unit 503 searches for an empty channel with reference to the information channel, and uses the empty channel. stand by.

  The information registration unit 504 registers information about the access point 50 and information about the network 5 managed by the access point 50 in the information channel.

[Operation]
Next, the operation of the second embodiment will be described with reference to the flowchart of FIG. In the following, description will be made by taking as an example the operation until the network 5 which is a new network is activated and the channel is determined.

  First, the activation unit 502 activates the access point 50, which is a new access point (S101).

  The network 5 is set to 14ch in the 2 GHz band, which is an information channel when the access point 50 is activated, and starts operating (S102).

  Subsequently, the determination unit 501 of the access point 50 checks whether information on the surrounding network and channel information exist in the information channel (S103).

  When there is no channel information in the information channel, determination unit 501 determines that there is no other access point in the vicinity. In this case, the control unit 503 performs a normal channel search (S104) and a radar search (S105). The control unit 503 determines a channel to be used from the found free channels and enters a standby state with the maximum bandwidth of the access point 50 (S106).

  After that, the access point 50 periodically transmits the wireless specifications of its own wireless LAN, the channel used, the current state, the information on the time zone with which the communication frequency is high from the past communication history, the information on the assigned slave unit, and the surrounding radar. Sends information such as the presence or absence of waves. For example, the access point 50 periodically transmits information in a cycle of about several hundred msec to 1 sec during standby. The access point 50 may transmit the channel information it has by switching to the information channel during idle time even during communication.

  Next, the operation when the determination unit 501 determines that channel information exists in S103 will be described. In this case, the determination unit 501 first refers to the channel information (S107) and confirms whether a channel corresponding to the maximum bandwidth of the access point 50 can be secured (S108).

  If a channel corresponding to the maximum bandwidth can be secured, the control unit 503 determines a channel to be used from the free channels and enters a standby state with the maximum bandwidth of the access point 50 (S109).

  If the control unit 503 determines in S108 that a channel corresponding to the maximum bandwidth of the access point 50 cannot be secured, it is checked with reference to the information channel whether there is a standby access point in another network (S110). ).

  Whether the access point is in a standby state is determined by whether or not the following two conditions are satisfied. The first condition is that the “current state” of each network stored in the information channel as shown in FIG. 5 is “standby”. The second condition is that the current time is different from the “channel occupancy time” of the network formed by the standby access point. If there is no waiting terminal, the access point 50 enters a standby state on an empty channel with a bandwidth equal to or less than the maximum bandwidth (S111).

  Even if there is a terminal waiting in S110, the access point 50 once enters a standby state on an empty channel with a bandwidth equal to or less than the maximum bandwidth (S112). At this time, the access point 50 stores the channel used by the standby access point as a backup channel, and continuously monitors it for its own communication.

  Specifically, in the case of the channel states of FIGS. 4 and 5, the access point 50 can secure 80 MHz, which is the maximum bandwidth. The access point 50 finally transitions to the state of S109, and channels are set to 44 ch, 48 ch, 136 ch, and 140 ch, and the maximum bandwidth can be secured.

[effect]
The access point 50 according to the second embodiment refers to the network information stored in the information channel and determines whether or not a channel for the maximum bandwidth can be secured.

  Therefore, the access point 50 according to the second embodiment can quickly determine whether there is an empty channel without performing a channel search or a radar search.

  In addition, when the access point according to the second embodiment has channel information of surrounding access points at the time of activation, the access point receives information for a regular transmission interval, so that information of all the wireless LAN devices in the vicinity is received. Can be recognized. Therefore, according to the access point according to the second embodiment, the used channel can be determined in a few seconds at the longest. As a result, in a normal channel search, the time required for determining a channel, which took about one minute, can be greatly reduced.

  Furthermore, according to the second embodiment, information such as the channels used between networks, the time occupied by communication, the presence / absence of surrounding radar, and the like are accumulated and shared in the information channel. Radio wave interference can be minimized.

  In addition, according to the second embodiment, information such as the channel used between networks and the time occupied by communication and the presence / absence of surrounding radar are integrated, shared, and shared. Channel arrangement can be coordinated between terminals.

  Similarly, according to the second embodiment, information such as the channel used between networks, the time occupied by communication, the presence / absence of surrounding radar, etc. are accumulated in the information channel and shared and shared. Channel setting is possible without surrounding radar waves without radar search.

[Third Embodiment]
Next, a third embodiment of the present invention will be described.

[Constitution]
The configuration of the communication system of the third embodiment is the same as that of the second embodiment and is shown in FIG. In the third embodiment, it is assumed that all access points are in a standby state or a communication state.

  FIG. 8 shows an example of a channel arrangement in which the channels used by the respective networks in FIG. In the example of FIG. 8, a very crowded environment is assumed, and only a bandwidth of 40 MHz can be secured at the maximum.

  FIG. 9 shows an example of a list in which the channel information of all the networks shown in FIG. 8 is aggregated into 14 GHz “information channels” in the 2 GHz band.

  Hereinafter, the operation of the access point 50 that has already been activated will be described. As a premise, it is assumed that the access point 50 has already been activated, has completed the processing up to S112 in FIG. 7, and is monitoring a spare channel with an empty channel. The configuration of the access point 50 is almost the same as the configuration of the access point 50 according to the second embodiment shown in FIG. However, the operations of the activation unit 502 and the control unit 503 are different from those of the second embodiment, and will be described together with the operation contents of the third embodiment.

[Operation]
Assume that the access point 50 that wants to enter the communication state is monitoring the channel of the network 2 as a spare channel.

  The access point 50 monitors the communication load of other networks when the maximum bandwidth cannot be used when the activation is completed and the channel is determined. In addition, the access point 50 broadcasts to the 14 GHz “information channel” of 2 GHz using a channel of another access point in a standby state as a backup channel. The access point 50 can share the channel by issuing a request for opening the spare channel at the timing of starting communication.

  The specific operation of the third embodiment will be described using the flowchart of FIG. FIG. 10 shows an operation procedure until the access point 50 accesses the “information channel” to release and share the channel.

  It is assumed that the access point 50 has a maximum bandwidth of 80 MHz, but has determined that there are not enough free channels from the use channel conditions of FIGS. The description will be made assuming that the access point 50 uses 44 ch and 48 ch at 40 MHz, which is half the maximum bandwidth.

  The access point 50 selects 44 ch and 48 ch when the activation is completed, notifies the 2 GHz band 14 ch “information channel” of the channel selected by itself, and enters a standby state (S201).

  Thereafter, the control unit 503 of the access point 50 monitors the status of surrounding access points, and confirms that the current status of the access point 20 is waiting and that the current time is outside the channel occupation time zone. . The access point 50 stores 36ch and 40ch as backup channels and broadcasts them to the 2 GHz band 14ch “information channel” (S202).

  When the access point 20 accesses the information channel, the access point 50 recognizes that 36ch and 40ch used by the access point 20 are reserved channels (S203).

  Thereafter, the access point 50 continues to monitor the use state of the access point 20 during periodic access to the information channel (S204).

  When the access point 50 shifts from the standby state to the communication state, the activation unit 502 accesses the information channel in order to communicate with the maximum bandwidth, and issues a channel release request for 36ch and 40ch (S205).

  The access point 20 permits the channel to be released (S206), and opens 36ch and 40ch (S207).

  The activation unit 502 of the access point 50 confirms that the channel has been released, uses 36ch to 48ch, and starts communication with the maximum bandwidth (S208). Further, when the communication of the access point 50 stops thereafter, the access point 50 once releases the 36ch and 40ch assigned from the access point 20, and returns to the standby state of the 44ch and 48ch before releasing the spare channel. To do.

  As described above, by providing an “information channel” on 14ch in the 2 GHz band, it is possible to realize a wireless LAN access point that allows networks that have been operating independently of each other to cooperate and open and share channels. It was.

[effect]
The access point 50 according to the third embodiment refers to the network information stored in the information channel and determines whether or not a channel for the maximum bandwidth can be secured.

  Therefore, the access point 50 according to the third embodiment can quickly determine whether there is an empty channel without performing a channel search or a radar search.

  In addition, when the access point according to the third embodiment has channel information of surrounding access points at the time of activation, the access point receives information for a regular transmission interval, so that information of all the wireless LAN devices in the vicinity is received. Can be recognized. Therefore, according to the access point according to the third embodiment, the used channel can be determined in a few seconds at the longest. As a result, in a normal channel search, the time required for determining a channel, which took about one minute, can be greatly reduced.

  Furthermore, according to the third embodiment, information such as the channels used between networks, the time occupied by communication, the presence / absence of surrounding radar, and the like are accumulated and shared in the information channel. Radio wave interference can be minimized.

  In addition, according to the third embodiment, information such as the channels used between networks and the times occupied by communication and the presence / absence of surrounding radars are accumulated and shared, so it is optimal depending on the time. Channel arrangement can be coordinated between terminals.

  Similarly, according to the third embodiment, information such as the channel used between networks, the time occupied by communication, the presence or absence of surrounding radar, and the like are accumulated and shared in the information channel. Channel setting is possible without surrounding radar waves without radar search.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described. The configuration and operation of the fourth embodiment are basically the same as those of the third embodiment, but the operation when a standby channel release request is made is different.

[Operation]
Hereinafter, the operation of the fourth embodiment will be described with a focus on the difference from the operation of the third embodiment, using the flowchart of FIG.

  The access point 50 has been activated as in the third embodiment, but uses a spare channel because the surrounding radio wave condition is poor and there are few empty channels. The access point 50 broadcasts information of the network 5 to the information channel using 44 ch and 48 ch in the 40 MHz band of half bandwidth instead of the maximum bandwidth 80 MHz (S301).

  The access point 50 selects 44 ch and 48 ch when the activation is completed, notifies the 2 GHz band 14 ch “information channel” of the channel selected by itself, and enters a standby state (S301).

  Thereafter, the control unit 503 of the access point 50 monitors the status of surrounding access points, and confirms that the current status of the access point 20 is waiting and that the current time is outside the channel occupation time zone. . The access point 50 stores 36ch and 40ch as backup channels and broadcasts them to the 2 GHz band 14ch “information channel” (S302).

  When the access point 20 accesses the information channel, the access point 50 recognizes that 36ch and 40ch used by the access point 20 are reserved channels (S303).

  Thereafter, the access point 50 continues to monitor the usage state of the access point 20 during periodic access to the information channel (S304).

  When the access point 50 shifts from the standby state to the communication state, the activation unit 502 issues a 36ch and 40ch channel release request in order to communicate with the maximum bandwidth (S305). At this time, unlike the third embodiment, the access point 50 issues a channel release request directly to the access point 20. An example of a direct communication method between the access point 50 and the access point 20 is ad hoc communication.

  Next, the access point 20 permits channel release (S306), releases channels 36 and 40, and notifies the access point 50 to that effect (S307).

  The access point 50 confirms that the channel has been released, uses 36ch to 48ch, and starts communication with the maximum bandwidth (S308). After that, when the communication of the access point 50 is stopped, the access point 50 releases the 36ch and 40ch once transferred from the access point 20, and returns to the standby state of the original 44ch and 48ch.

[effect]
The access point 50 according to the fourth embodiment refers to the network information stored in the information channel and determines whether or not a channel for the maximum bandwidth can be secured.

  Therefore, the access point 50 according to the fourth embodiment can quickly determine whether there is an empty channel without performing a channel search or a radar search.

  In addition, when the access point according to the fourth embodiment has channel information of surrounding access points at the time of activation, the access point receives information for a regular transmission interval, so that information of all the wireless LAN devices in the vicinity is received. Can be recognized. Therefore, according to the access point according to the fourth embodiment, the used channel can be determined in a few seconds at the longest. As a result, in a normal channel search, the time required for determining a channel, which took about one minute, can be greatly reduced.

  Furthermore, according to the fourth embodiment, information such as channels used between networks, times occupied by communication, presence / absence of surrounding radars, etc. are accumulated in an information channel and shared and shared. Radio wave interference can be minimized.

  In addition, according to the fourth embodiment, information such as the channel used between networks and the time occupied by communication and the presence / absence of surrounding radar are integrated, shared, and shared. Channel arrangement can be coordinated between terminals.

  Similarly, according to the fourth embodiment, information such as the channel used between networks, the time occupied by communication, the presence / absence of surrounding radar, etc. are accumulated in the information channel and shared and shared. Channel setting is possible without surrounding radar waves without radar search.

  While the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

  In addition, the communication device or the access point according to the above-described embodiment can realize the functions possessed by hardware, and can also be realized by a computer and a program executed on the computer. The program is provided by being recorded on a recording medium such as a magnetic disk or a semiconductor memory, and is read by the computer when the computer is started up. In this way, the operation of the computer is controlled, and the computer is caused to function as a communication device or an access point in each of the above-described embodiments, and the above-described processing is performed.

  Further, a part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1)
A communication apparatus comprising: a determination unit that determines whether a channel corresponding to the maximum bandwidth can be secured by referring to network information stored in an information channel.

(Appendix 2)
The communication device further includes:
An activation unit that activates using the information channel;
The appendix 1 is characterized in that the determination unit determines whether or not a channel corresponding to the maximum bandwidth can be secured by referring to the network information stored in the information channel at the time of activation by the activation unit. Communication equipment.

(Appendix 3)
The communication device further includes:
As a result of the determination, when a channel for the maximum bandwidth can be secured, the channel waits using the channel for the maximum bandwidth.When the channel for the maximum bandwidth cannot be secured as a result of the determination, The communication apparatus according to appendix 1 or 2, further comprising: a control unit that searches for an empty channel from the network information and stands by using the empty channel.

(Appendix 4)
The controller is
From the network information stored in the information channel, search for a spare channel capable of securing the maximum bandwidth in combination with the empty channel,
The activation unit is
Sending a request to release the spare channel to another communication device having the spare channel at the start of communication,
4. The communication apparatus according to appendix 3, wherein the communication apparatus is activated using the empty channel and the spare channel when receiving the permission to release the spare channel from the other communication apparatus.

(Appendix 5)
The communication apparatus according to any one of appendices 1 to 4, wherein the information channel is 14ch of 2 GHz band.

(Appendix 6)
The communication device further includes:
The communication apparatus according to any one of appendices 1 to 5, further comprising: an information registration unit that registers information on a network managed by the communication apparatus in the information channel.

(Appendix 7)
A communication method comprising: referring to network information stored in an information channel and determining whether a channel corresponding to the maximum bandwidth of the communication device can be secured.

(Appendix 8)
The communication method further includes:
Wake up the communication device using the information channel;
Refer to the information of the network stored in the information channel at the time of activation by the activation unit,
The communication method according to appendix 7, wherein it is determined whether or not a channel for the maximum bandwidth can be secured.

(Appendix 9)
The communication method further includes:
As a result of the determination, when the channel for the maximum bandwidth can be secured, the channel is waited using the channel for the maximum bandwidth,
As a result of the determination, if a channel corresponding to the maximum bandwidth cannot be secured, an empty channel is searched from the network information, and the standby is performed using the empty channel. Communication method.

(Appendix 10)
The communication method further includes:
From the network information stored in the information channel, search for a spare channel capable of securing the maximum bandwidth in combination with the empty channel,
Sending a request to release the spare channel to another communication device having the spare channel at the start of communication,
The communication method according to appendix 9, wherein when the release permission of the spare channel is received from the other communication device, the spare channel and the spare channel are used for activation.

(Appendix 11)
11. The communication method according to any one of appendices 7 to 10, wherein the information channel is 14ch of 2 GHz band.

(Appendix 12)
The communication method further includes:
The communication method according to any one of appendices 7 to 11, wherein information related to a network managed by the communication device is registered in the information channel.

(Appendix 13)
A program for causing a computer to execute a process of determining whether or not a channel corresponding to the maximum bandwidth of a communication device can be secured by referring to network information stored in an information channel.

(Appendix 14)
The program further includes:
Processing to activate the communication device using the information channel;
A process of referring to information of the network stored in the information channel at the time of activation by the activation unit;
A process of determining whether or not a channel for the maximum bandwidth can be secured;
The program according to appendix 13, characterized by including:

(Appendix 15)
The program further includes:
As a result of the determination, when a channel for the maximum bandwidth can be secured, a process of waiting using the channel for the maximum bandwidth; and
As a result of the determination, if a channel for the maximum bandwidth cannot be secured, a process of searching for a free channel from the network information and waiting using the free channel;
The program according to appendix 13 or 14, characterized by including:

(Appendix 16)
The program further includes:
A process of searching for a spare channel capable of securing the maximum bandwidth in combination with the empty channel from the information on the network stored in the information channel;
Processing for transmitting a request to release the spare channel to another communication device having the spare channel at the start of communication;
When receiving the permission to release the spare channel from the other communication device, a process to start using the empty channel and the spare channel;
The program according to appendix 15, characterized by including:

(Appendix 17)
The program according to any one of appendices 13 to 16, wherein the information channel is 14ch of 2 GHz band.

(Appendix 18)
The program further includes:
Processing for registering information on the network managed by the communication device in the information channel;
18. The program according to any one of appendices 13 to 17, characterized by including:

(Appendix 19)
A communication system comprising a plurality of communication devices,
The communication device
A communication system comprising: a determination unit that determines whether a channel corresponding to the maximum bandwidth can be secured by referring to network information stored in an information channel.

(Appendix 20)
The communication device further includes:
An activation unit that activates using the information channel;
The appendix 19 is characterized in that the determination unit determines whether or not a channel corresponding to the maximum bandwidth can be secured by referring to the network information stored in the information channel at the time of activation by the activation unit. Communication system.

(Appendix 21)
The communication device further includes:
As a result of the determination, when a channel for the maximum bandwidth can be secured, the channel waits using the channel for the maximum bandwidth.When the channel for the maximum bandwidth cannot be secured as a result of the determination, The communication system according to appendix 19 or 20, further comprising: a control unit that searches for a free channel from the network information and stands by using the free channel.

(Appendix 22)
The controller is
From the network information stored in the information channel, search for a spare channel capable of securing the maximum bandwidth in combination with the empty channel,
The activation unit is
Sending a request to release the spare channel to another communication device having the spare channel at the start of communication,
23. The communication system according to appendix 21, wherein when the release permission of the spare channel is received from the other communication device, the spare channel and the spare channel are used for activation.

(Appendix 23)
23. The communication system according to any one of appendices 19 to 22, wherein the information channel is 14ch of 2 GHz band.

(Appendix 24)
The communication device further includes:
The communication system according to any one of appendices 19 to 23, further comprising: an information registration unit that registers information related to a network managed by the communication device in the information channel.

1, 2, 3, 4, 5 Network 10, 20, 30, 40, 50 Access point 60, 70 Radar 501 Judgment unit 502 Start-up unit 503 Control unit 504 Information registration unit 1000 Communication device 1001 Judgment means

Claims (10)

A communication apparatus comprising: a determination unit that determines whether a channel corresponding to the maximum bandwidth can be secured by referring to network information stored in an information channel. The communication device further includes:
An activation unit that activates using the information channel;
2. The determination unit according to claim 1, wherein at the time of activation by the activation unit, the determination unit refers to information on the network stored in the information channel and determines whether or not a channel for the maximum bandwidth can be secured. The communication device described. The communication device further includes:
As a result of the determination, when a channel for the maximum bandwidth can be secured, the channel waits using the channel for the maximum bandwidth.When the channel for the maximum bandwidth cannot be secured as a result of the determination, The communication apparatus according to claim 1, further comprising: a control unit that searches for a free channel from the information of the network and stands by using the free channel. The controller is
From the network information stored in the information channel, search for a spare channel capable of securing the maximum bandwidth in combination with the empty channel,
The activation unit is
Sending a request to release the spare channel to another communication device having the spare channel at the start of communication,
The communication apparatus according to claim 3, wherein when the release permission of the spare channel is received from the other communication apparatus, the communication apparatus is activated using the empty channel and the spare channel.   The communication apparatus according to any one of claims 1 to 4, wherein the information channel is 14ch of 2 GHz band. The communication device further includes:
The communication apparatus according to any one of claims 1 to 5, further comprising: an information registration unit that registers information on a network managed by the communication apparatus in the information channel. A communication method comprising: referring to network information stored in an information channel and determining whether a channel corresponding to the maximum bandwidth of the communication device can be secured. The communication method further includes:
Wake up the communication device using the information channel;
Refer to the information of the network stored in the information channel at the time of activation by the activation unit,
The communication method according to claim 7, wherein it is determined whether a channel corresponding to the maximum bandwidth can be secured. The communication method further includes:
As a result of the determination, when the channel for the maximum bandwidth can be secured, the channel is waited using the channel for the maximum bandwidth,
9. The method according to claim 7, wherein, as a result of the determination, when a channel corresponding to the maximum bandwidth cannot be secured, a free channel is searched from the information on the network, and the standby is performed using the free channel. Communication method. A program for causing a computer to execute a process of determining whether or not a channel corresponding to the maximum bandwidth of a communication device can be secured by referring to network information stored in an information channel.

Images