JP6395201B2 - Management device, communication system, wireless terminal device, communication control method, and communication control program - Google Patents

Description

  The present invention relates to a management device, a communication system, a wireless terminal device, a communication control method, and a communication control program, and in particular, a management device in a communication system capable of evaluating the state of a building based on sensor measurement results, the communication system, and the wireless The present invention relates to a terminal device, a communication control method, and a communication control program.

  In a mobile communication system, a communication service is provided by a radio base station apparatus that forms a cell that is an area in which a radio terminal apparatus can communicate.

  An M2M (Machine to Machine) system is known as a system using such a communication service. In the M2M system, devices are automatically controlled by exchanging information between devices equipped with wireless devices without human intervention.

  As an example of the M2M system, for example, Patent Literature 1 (Japanese Patent No. 4237134) discloses the following technology. That is, a mobile communication network having a wireless terminal, a gateway node capable of wireless communication with the wireless terminal, a location information storage device that holds location information of the wireless terminal, and a message transmission destination from the wireless terminal This is a network system in which another network to which a certain terminal is connected is connected via a gateway. The network system includes terminal address holding means for holding the address of the terminal that is a transmission destination predetermined for each wireless terminal. When transmitting a message from the wireless terminal to the terminal, when the gateway node receives a wireless frame from the wireless terminal, the gateway node accesses the terminal address holding unit, and sends a message destination terminal to each wireless terminal. An address is specified, and a message is transmitted to the specified destination terminal via the gateway. When transmitting a message from the terminal to the wireless terminal, the gateway accesses the position information storage device, acquires position information from the ID of the wireless terminal, and the corresponding gateway node from the acquired position information Forward the message to The gateway node transfers the message to the wireless terminal.

Japanese Patent No. 4237134

  As one form of use of such an M2M system, a system that installs a sensor capable of wirelessly transmitting a measurement result in a building and evaluates the soundness of the building based on the measurement result by the sensor can be considered.

  When a disaster such as an earthquake occurs, a building provided with such an M2M system may be used as a shelter and many people may gather at the building.

  In such a case, many people use mobile phones or the like to connect to the evacuation shelter network and acquire various information from the Internet, increasing the possibility of congestion in the network. When such congestion occurs, data indicating the measurement results of sensors installed at the evacuation site is lost, and it is difficult to accurately and quickly predict collapse of the evacuation site due to aftershocks and aging. It may become.

  This invention was made in order to solve the above-mentioned subject, and the object is to transmit the measurement result of the sensor installed in the building via the network in the building, and to determine the state of the building based on the measurement result. To provide a management device, a communication system, a wireless terminal device, a communication control method, and a communication control program capable of suppressing the occurrence of a failure in building evaluation due to network congestion in an evaluable communication system.

  (1) In order to solve the above problem, a management apparatus according to an aspect of the present invention is a state of the building based on a measurement result of a sensor installed in a building and capable of communicating with a radio base station apparatus. A communication device capable of evaluating the communication information, a communication information acquisition unit for acquiring communication environment information related to a communication environment in the communication system, a communication terminal of the sensor, and a wireless terminal capable of communicating with a wireless base station device A communication control unit that performs a process of changing a communication operation of the wireless terminal device based on the communication environment information acquired by the communication information acquisition unit in a state where the communication counterpart of the device is the same wireless base station device; Prepare.

  (6) In order to solve the above problem, a communication system according to an aspect of the present invention is a communication system including one or more radio base station apparatuses and a management apparatus capable of communicating with the radio base station apparatus. The communication system is a sensor installed in a building and can evaluate the state of the building based on a measurement result of a sensor communicable with the radio base station device. Communication environment information related to a communication environment in the communication system is transmitted to the management device, and the management device is a radio base station in which a communication partner of the sensor and a communication partner of a wireless terminal device capable of communicating with the wireless base station device are the same In the state of being a device, based on the communication environment information received from the wireless base station device, instruction information for changing the communication operation of the wireless terminal device is not stored. It is transmitted to the base station apparatus.

  (7) A wireless terminal apparatus according to an aspect of the present invention for solving the above problem is a wireless terminal apparatus in the communication system according to (1) or (6).

  (8) In order to solve the above-described problem, a communication control method according to an aspect of the present invention is based on a measurement result of a sensor installed in a building and capable of communicating with a radio base station apparatus. A communication control method for a management apparatus in a communication system capable of evaluating a state, the communication environment information relating to a communication environment in the communication system being acquired, and communicating with a communication partner of the sensor and a radio base station apparatus Performing a process of changing the communication operation of the wireless terminal device based on the acquired communication environment information in a state where the communication partner of the wireless terminal device is the same wireless base station device.

  (9) In order to solve the above problem, a communication control method according to an aspect of the present invention is a communication system including one or more radio base station apparatuses and a management apparatus capable of communicating with the radio base station apparatus. A communication control method, wherein the communication system is capable of evaluating a state of the building based on a measurement result of a sensor installed in a building and capable of communicating with the wireless base station device, and the wireless A base station device transmitting communication environment information related to a communication environment in the communication system to the management device; and a wireless terminal device capable of communicating with the communication partner of the sensor and the wireless base station device. Communication operation of the wireless terminal device based on the communication environment information received from the wireless base station device in a state where the communication partner is the same wireless base station device And transmitting the instruction information for changing to the radio base station apparatus.

  (10) In order to solve the above-described problem, a communication control program according to an aspect of the present invention is based on a measurement result of a sensor installed in a building and capable of communicating with a radio base station apparatus. A communication control program used in a management apparatus in a communication system capable of evaluating a state, the step of acquiring communication environment information related to a communication environment in the communication system in a computer, a communication partner of the sensor, and a radio base station Performing a process of changing a communication operation of the wireless terminal device based on the acquired communication environment information in a state where a communication partner of the wireless terminal device capable of communicating with the device is the same wireless base station device It is a program for.

  (11) In order to solve the above-described problem, a communication control program according to an aspect of the present invention is a communication system including one or a plurality of radio base station apparatuses and a management apparatus capable of communicating with the radio base station apparatus. A communication control program used, wherein the communication system is a sensor installed in a building and can evaluate the state of the building based on a measurement result of a sensor capable of communicating with the wireless base station device, The wireless base station apparatus transmits to the computer communication environment information related to a communication environment in the communication system to the management apparatus, and the management apparatus can communicate with the communication partner of the sensor and the wireless base station apparatus. The communication environment information received from the radio base station apparatus in a state where the communication partner of the different radio terminal apparatus is the same radio base station apparatus Based on a program for executing a step of transmitting the instruction information for changing the communication operation of the wireless terminal device to the radio base station apparatus.

  The present invention can be realized not only as a management apparatus including such a characteristic processing unit but also as a semiconductor integrated circuit that realizes a part or all of the management apparatus.

  In addition, the present invention can be realized not only as a communication system including such a characteristic processing unit, but also as a semiconductor integrated circuit that realizes part or all of the communication system.

  According to the present invention, in a communication system capable of transmitting a measurement result of a sensor installed in a building via a network in the building and evaluating the state of the building based on the measurement result, the building evaluation caused by network congestion The occurrence of trouble can be suppressed.

FIG. 1 is a diagram showing a configuration of a communication system according to an embodiment of the present invention. FIG. 2 is a diagram showing a configuration of the building management server in the communication system according to the embodiment of the present invention. FIG. 3 is a diagram showing a configuration of the network management server in the communication system according to the embodiment of the present invention. FIG. 4 is a diagram showing a building state evaluation sequence in the communication system according to the embodiment of the present invention. FIG. 5 is a diagram showing a sensor information protection sequence in the communication system according to the embodiment of the present invention. FIG. 6 is a diagram showing a communication connection processing sequence between the terminal device and the access point in the communication system according to the embodiment of the present invention.

  First, the contents of the embodiment of the present invention will be listed and described.

  (1) A management device according to an embodiment of the present invention is a communication system capable of evaluating the state of the building based on a measurement result of a sensor installed in a building and capable of communicating with a radio base station device, A communication information acquisition unit that acquires communication environment information related to a communication environment in the communication system, a communication partner of the sensor, and a communication partner of a wireless terminal device that can communicate with a wireless base station device. A communication control unit that performs a process of changing a communication operation of the wireless terminal device based on the communication environment information acquired by the communication information acquisition unit in a state of being a base station device.

  Thus, in a state where the communication partner of the sensor and the communication partner of the wireless terminal device are the same wireless base station device, the communication operation of the wireless terminal device is changed based on the communication environment information in the communication system, for example, the communication system When the communication environment in the network deteriorates, the sensor measurement result can be protected with priority over the communication data of the wireless terminal device. Thereby, since the communication quality between a sensor and a wireless base station apparatus can be kept favorable, the measurement result of a sensor can be collected stably. Therefore, in a communication system that can transmit the measurement results of sensors installed in a building via the network in the building and evaluate the state of the building based on the measurement results, the occurrence of a building evaluation failure due to network congestion Can be suppressed.

  (2) Preferably, the wireless terminal device can perform communication by selecting any of the plurality of wireless base station devices, and the communication control unit performs the wireless operation as a process of changing the communication operation. A process of changing the radio base station apparatus that is a communication partner of the terminal apparatus is performed.

  As described above, the configuration in which the wireless base station device that is the communication connection destination of the wireless terminal device is changed can more reliably prevent deterioration in communication quality between the sensor and the wireless base station device due to the communication of the wireless terminal device. . For example, it is possible to change the communication connection destination of a wireless terminal device under the control of a wireless base station device having a concentrated communication load to another wireless base station device, so that the communication traffic in each wireless base station device is leveled For example, it is possible to avoid information loss due to overflow of the memory of the radio base station apparatus.

  (3) Preferably, the said communication control part performs the process which changes the communication parameter of the said radio | wireless terminal apparatus as a process which changes the said communication operation.

  With such a configuration, various communication parameters of the wireless terminal device can be changed, and deterioration of communication quality between the sensor and the wireless base station device due to, for example, interference of the wireless terminal device can be prevented. For example, by changing the frequency band used for wireless communication between the wireless terminal device and the wireless base station device, it is possible to prevent duplication with the used frequency band of the sensor and avoid information loss due to radio wave interference between the sensor and the wireless terminal device. can do. For example, in a communication system that employs a communication method such as CSMA / CA in which a waiting time until signal retransmission can be set, it is possible to lengthen the waiting time of the wireless terminal device and give priority to wireless transmission of the sensor.

  (4) Preferably, the said communication information acquisition part acquires the communication environment information regarding the communication environment in the said wireless terminal device.

  With such a configuration, it is possible to easily identify a radio terminal apparatus with large interference and change the communication operation of the radio terminal apparatus. Further, without adding a special function to the radio base station apparatus, for example, by installing predetermined software only in the radio terminal apparatus, processing for grasping the communication environment in the communication system and improving the communication environment can be performed. Become.

  (5) Preferably, the management device further evaluates the state of the building based on a sensor information acquisition unit that acquires a measurement result of the sensor and the measurement result acquired by the sensor information acquisition unit. And a building evaluation department.

  With such a configuration, it is possible to provide a management device that realizes both a building state evaluation function and a communication control function for suppressing the occurrence of a failure in building evaluation due to network congestion.

  (6) A communication system according to an embodiment of the present invention is a communication system including one or a plurality of radio base station apparatuses and a management apparatus capable of communicating with the radio base station apparatus, and the communication system includes: A state of the building can be evaluated based on a measurement result of a sensor installed in a building and capable of communicating with the wireless base station device, and the wireless base station device relates to a communication environment in the communication system. The communication environment information is transmitted to the management device, and the management device is configured so that the communication partner of the sensor and the communication partner of a wireless terminal device capable of communicating with the wireless base station device are the same wireless base station device. Based on the communication environment information received from the radio base station apparatus, instruction information for changing the communication operation of the radio terminal apparatus is transmitted to the radio base station apparatus.

  Thus, in a state where the communication partner of the sensor and the communication partner of the wireless terminal device are the same wireless base station device, the communication operation of the wireless terminal device is changed based on the communication environment information in the communication system, for example, the communication system When the communication environment in the network deteriorates, the sensor measurement result can be protected with priority over the communication data of the wireless terminal device. Thereby, since the communication quality between a sensor and a wireless base station apparatus can be kept favorable, the measurement result of a sensor can be collected stably. Therefore, in a communication system that can transmit the measurement results of sensors installed in a building via the network in the building and evaluate the state of the building based on the measurement results, the occurrence of a building evaluation failure due to network congestion Can be suppressed.

  (7) The radio | wireless terminal apparatus which concerns on embodiment of this invention is a radio | wireless terminal apparatus in the communication system as described in said (1) or said (6).

  As a result, in the communication system that can transmit the measurement result of the sensor installed in the building via the network in the building and evaluate the state of the building based on the measurement result, the failure of the building evaluation due to the congestion of the network It is possible to provide a wireless terminal device suitable for suppressing the occurrence.

  (8) A communication control method according to an embodiment of the present invention is a communication system capable of evaluating the state of a building based on a measurement result of a sensor installed in a building and capable of communicating with a radio base station apparatus. The communication control method of the management apparatus in claim 1, wherein the communication environment information relating to the communication environment in the communication system is acquired, the communication partner of the sensor, and the communication partner of a wireless terminal device capable of communicating with a wireless base station device Performing a process of changing a communication operation of the wireless terminal device based on the acquired communication environment information in a state of being the same wireless base station device.

  Thus, in a state where the communication partner of the sensor and the communication partner of the wireless terminal device are the same wireless base station device, the communication operation of the wireless terminal device is changed based on the communication environment information in the communication system, for example, the communication system When the communication environment in the network deteriorates, the sensor measurement result can be protected with priority over the communication data of the wireless terminal device. Thereby, since the communication quality between a sensor and a wireless base station apparatus can be kept favorable, the measurement result of a sensor can be collected stably. Therefore, in a communication system that can transmit the measurement results of sensors installed in a building via the network in the building and evaluate the state of the building based on the measurement results, the occurrence of a building evaluation failure due to network congestion Can be suppressed.

  (9) A communication control method according to an embodiment of the present invention is a communication control method in a communication system including one or a plurality of radio base station apparatuses and a management apparatus capable of communicating with the radio base station apparatus, The communication system is capable of evaluating the state of the building based on a measurement result of a sensor installed in a building and capable of communicating with the radio base station device, and the radio base station device A wireless base station in which communication environment information relating to a communication environment in the system is transmitted to the management device, and the communication device of the wireless terminal device that can communicate with the communication partner of the sensor and the wireless base station device. In the state of being a device, based on the communication environment information received from the wireless base station device, instruction information for changing the communication operation of the wireless terminal device And transmitting to the wireless base station apparatus.

  Thus, in a state where the communication partner of the sensor and the communication partner of the wireless terminal device are the same wireless base station device, the communication operation of the wireless terminal device is changed based on the communication environment information in the communication system, for example, the communication system When the communication environment in the network deteriorates, the sensor measurement result can be protected with priority over the communication data of the wireless terminal device. Thereby, since the communication quality between a sensor and a wireless base station apparatus can be kept favorable, the measurement result of a sensor can be collected stably. Therefore, in a communication system that can transmit the measurement results of sensors installed in a building via the network in the building and evaluate the state of the building based on the measurement results, the occurrence of a building evaluation failure due to network congestion Can be suppressed.

  (10) A communication control program according to an embodiment of the present invention is a communication system capable of evaluating the state of a building based on a measurement result of a sensor installed in the building and capable of communicating with a radio base station apparatus. A communication control program used in the management apparatus in claim 1, wherein a communication environment information relating to a communication environment in the communication system is acquired by a computer, and a wireless terminal capable of communicating with a communication partner of the sensor and a wireless base station apparatus And a step of executing a process of changing a communication operation of the wireless terminal device based on the acquired communication environment information in a state where the communication partner of the device is the same wireless base station device.

  Thus, in a state where the communication partner of the sensor and the communication partner of the wireless terminal device are the same wireless base station device, the communication operation of the wireless terminal device is changed based on the communication environment information in the communication system, for example, the communication system When the communication environment in the network deteriorates, the sensor measurement result can be protected with priority over the communication data of the wireless terminal device. Thereby, since the communication quality between a sensor and a wireless base station apparatus can be kept favorable, the measurement result of a sensor can be collected stably. Therefore, in a communication system that can transmit the measurement results of sensors installed in a building via the network in the building and evaluate the state of the building based on the measurement results, the occurrence of a building evaluation failure due to network congestion Can be suppressed.

  (11) A communication control program according to an embodiment of the present invention is a communication control program used in a communication system including one or a plurality of radio base station apparatuses and a management apparatus capable of communicating with the radio base station apparatus. The communication system is capable of evaluating the state of the building based on a measurement result of a sensor installed in a building and capable of communicating with the wireless base station device, and the wireless base station is connected to a computer. A device transmitting communication environment information related to a communication environment in the communication system to the management device; a communication partner of the wireless terminal device capable of communicating with the communication partner of the sensor and the wireless base station device; Are the same radio base station apparatus, based on the communication environment information received from the radio base station apparatus, the radio terminal apparatus Instruction information for changing the communication operation of a program for executing the steps of transmitting to the radio base station apparatus.

  Thus, in a state where the communication partner of the sensor and the communication partner of the wireless terminal device are the same wireless base station device, the communication operation of the wireless terminal device is changed based on the communication environment information in the communication system, for example, the communication system When the communication environment in the network deteriorates, the sensor measurement result can be protected with priority over the communication data of the wireless terminal device. Thereby, since the communication quality between a sensor and a wireless base station apparatus can be kept favorable, the measurement result of a sensor can be collected stably. Therefore, in a communication system that can transmit the measurement results of sensors installed in a building via the network in the building and evaluate the state of the building based on the measurement results, the occurrence of a building evaluation failure due to network congestion Can be suppressed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated. Moreover, you may combine arbitrarily at least one part of embodiment described below.

[Configuration and basic operation]
FIG. 1 is a diagram showing a configuration of a communication system according to an embodiment of the present invention.

  Referring to FIG. 1, a communication system 301 is installed in a building 601 that is used as an evacuation center, for example. The communication system 301 includes a management device 201, a local information management server 103, a gateway 104, a storage device 105, and an internal network 401. The management apparatus 201 includes a network management server 101 and a building management server 102. The internal network 401 includes a plurality of access points (radio base station apparatuses) 151, a hub and a router (not shown), and the like.

  The network management server 101, the building management server 102, the local information management server 103, and the gateway 104 are connected to the internal network 401 and can communicate with each other.

  The gateway 104 relays communication data between the internal network 401 and the external network 402.

  The access point 151 is an access point of a wireless LAN system standardized by IEEE 802.11, and can communicate with each device connected to the internal network 401.

  The wireless terminal device 162 is a portable information terminal such as a smartphone and a tablet, and transmits and receives wireless signals to and from an access point 151 in the 2.4 GHz band that is, for example, an ISM band (Industry Science Medical band) in accordance with the IEEE 802.11 standard. , Communication with the access point 151, other devices connected to the internal network 401 via the access point 151, and other devices connected to the external network 402. The wireless terminal device 162 can communicate by selecting any of the plurality of access points 151.

  The wireless terminal device 162 employs, for example, a CSMA / CA (Carrier Sense Multiple Access Collision Avoidance) method, determines whether another wireless terminal device 162 is transmitting a wireless signal, and determines other wireless terminal devices 162. Transmits a radio signal including information to be transmitted to the access point 151.

  For example, the wireless terminal device 162 can install dedicated network control software. The wireless terminal device 162 in which the network control software is installed has communication environment information indicating its own communication throughput, received packet loss rate, number of retransmissions of transmission packets, reception power of radio waves transmitted from the access point 151, and the like. It is created and included in a radio signal and transmitted to the access point 151. In addition, the wireless terminal device 162 in which the network control software is installed can receive the instruction information from the network management server 101 and can change its own communication operation based on the received instruction information.

  The network management server 101 controls communication between the internal network 401 and the external network 402 by the wireless terminal device 162 or the like. Specifically, the network management server 101 has functions such as proxy, DNS (Domain Name System), or gateway, and centrally manages access to the external network 402 that occurs in the internal network 401.

  In order to access the external network 402, the wireless terminal device 162 connected to the internal network 401 inquires the network management server 101 about an IP address or the like, or designates the network management server 101 as a transmission destination of an IP packet or the like.

  As a result, the network management server 101 can control the amount of communication generated in the internal network 401. Specifically, the network management server 101 allows the access to the external network 402 requested from the wireless terminal device 162 or does not permit the access, for example, to the storage device 105. Decide whether you want to stay in

  The local information management server 103 obtains external data in the storage device 501 or the like connected to the external network 402 via some storage medium such as the external network 402 or a USB (Universal Serial Bus) memory, and the storage device 105. Save to. That is, there are two methods for updating the stored information in the storage device 105: a method of acquiring data via the external network 402, and a method of manually storing data stored in a USB memory or the like and carried manually.

  The storage device 105 stores information created inside the building 601 and information created outside the building 601.

  The information created in the building 601 which is a refuge includes, for example, information to be shared in the refuge, such as the location of the equipment and usage rules, a list of requests from the refugees, and refugees serving as safety confirmation information. Name and address.

  The information created outside the building 601 that is a shelter includes, for example, news posted on a website and newspaper, and information for confirming safety at other shelters.

  The communication system 301 can evaluate the state of the building 601 based on the measurement result of the sensor 161.

  More specifically, the sensor 161 is installed in the building 601 and can communicate with the access point 151. The sensor 161 measures the acceleration, displacement, strain, temperature, and the like of the building 601 and transmits a wireless signal including the measurement result to the access point 151 regularly or irregularly.

  The access point 151 transmits the measurement result included in the radio signal received from the sensor 161 to the building management server 102.

  The building management server 102 evaluates the state of the building 601 based on the measurement result of the sensor 161 received from the access point 151. Specifically, for example, the building management server 102 determines the soundness of the building 601 and outputs an alarm when the building 601 has an abnormality. For example, the building management server 102 transmits the alarm to the manager of the building 601 via the external network 402, notifies the building 601 by voice or the like, or stores the evaluation contents via the local information management server 103. Save to 105.

  Note that the network management server 101, the building management server 102, the local information management server 103, and the gateway 104 are not limited to physically provided configurations, and any two, three, or all of them are physically one. The structure provided as an apparatus may be sufficient. Further, the local information management server 103 may include a storage device 105.

  In addition, the local information management server 103 and the storage device 105 may not be always installed in the building 601, and may be installed when the building 601 is used as an evacuation center after a disaster occurs.

  Further, the access point 151 and the wireless terminal device 162 are not limited to IEEE 802.11, and may be devices capable of wireless communication according to other communication standards such as ZigBee (registered trademark) and Bluetooth (registered trademark).

  In the communication system 301, the wireless terminal device 162 in which the network control software is installed and the wireless terminal device 162 in which the network control software is not installed may be mixed.

  The sensor 161 is not limited to the configuration in which the access point 151 as a communication partner is fixed, and has a function of selecting and communicating one of the plurality of access points 151 like the wireless terminal device 162. It may be.

  FIG. 2 is a diagram showing a configuration of the building management server in the communication system according to the embodiment of the present invention.

  Referring to FIG. 2, building management server 102 includes a sensor information acquisition unit 11 and a building evaluation unit 12.

  The sensor information acquisition unit 11 receives and acquires the measurement result of the sensor 161 from the access point 151.

  The building evaluation unit 12 evaluates the state of the building 601 based on the measurement result acquired by the sensor information acquisition unit 11. Specifically, for example, the building evaluation unit 12 determines the soundness of the building 601 based on the magnitude of vibration of the building 601 and the amplitude characteristics of the vibration.

  FIG. 3 is a diagram showing a configuration of the network management server in the communication system according to the embodiment of the present invention.

  Referring to FIG. 3, network management server 101 includes a communication information acquisition unit 21 and a communication control unit 22.

  The communication information acquisition unit 21 receives and acquires communication environment information related to the communication environment in the communication system 301 from the access point 151. For example, the communication information acquisition unit 21 acquires communication environment information regarding the communication environment in the wireless terminal device 162.

  Based on the communication environment information acquired by the communication information acquisition unit 21 in a state where the communication partner of the sensor 161 and the communication partner of the wireless terminal device 162 are the same access point 151, the communication control unit 22 performs the wireless terminal device 162. The process of changing the communication operation is performed.

  For example, the communication control unit 22 performs a process of changing the access point 151 that is the communication partner of the wireless terminal device 162 as a process of changing the communication operation of the wireless terminal device 162.

[Operation]
Next, communication control in the communication system according to the embodiment of the present invention will be described with reference to the drawings.

  Each device in the communication system 301 includes a computer, and an arithmetic processing unit such as a CPU in the computer reads and executes a program including a part or all of each step of the following flowcharts and sequences from a memory (not shown). Each of the programs of the plurality of apparatuses can be installed from the outside. The programs of the plurality of apparatuses are distributed while being stored in a recording medium.

  FIG. 4 is a diagram showing a building state evaluation sequence in the communication system according to the embodiment of the present invention.

  Referring to FIG. 4, first, sensor 161 measures the acceleration of building 601 and the like, and includes sensor information indicating the measurement result in a wireless signal and transmits it to access point 151 (step S1).

  Next, the access point 151 transmits the sensor information included in the radio signal received from the sensor 161 to the building management server 102 (step S2).

  Next, the building management server 102 performs a building evaluation process for evaluating the state of the building 601 based on the sensor information received from the access point 151 (step S3).

  That is, if the building management server 102 determines that the building 601 is not healthy and abnormal (NO in step S3), the building management server 102 transmits an alarm to the administrator of the building 601 and the local information management server 103 (step S4). ).

  On the other hand, if the building management server 102 determines that the building 601 is healthy (YES in step S3), the building management server 102 waits until new sensor information is received.

  The sensor 161 transmits the sensor information to the access point 151 regularly or irregularly (step S5), and the building management server 102 receives the sensor information via the access point 151 (step S6). The building evaluation process is performed based on the above.

  Note that the operation shown in FIG. 4 can be executed both during normal times before and after a disaster.

  In addition, the building management server 102 is not limited to the configuration in which the building evaluation process is performed every time one piece of sensor information is received, and the soundness of the building 601 is determined based on a plurality of sensor information received from one or a plurality of sensors 161. The structure evaluated comprehensively may be sufficient.

  FIG. 5 is a diagram showing a sensor information protection sequence in the communication system according to the embodiment of the present invention.

  Here, it is assumed that two access points 151, AP 1 and AP 2, are installed in the building 601, and the access point AP 1 is set as a communication connection destination of the sensor 161. Further, it is assumed that the above-described network control software is installed in the wireless terminal device 162.

  Referring to FIG. 5, in normal times, when sensor 161 is first installed in building 601, sensor 161 transmits and receives various information to and from access point AP 1, for example, to establish communication connection between itself and access point AP 1. Is established (step S11).

  Next, the sensor 161 measures the acceleration or the like of the building 601 and includes sensor information indicating the measurement result in a wireless signal and transmits it to the access point AP1 (step S12).

  Next, the access point AP1 transmits the sensor information included in the radio signal received from the sensor 161 to the building management server 102 (step S13).

  Next, the building management server 102 performs the building evaluation process shown in FIG. 4 based on the sensor information received from the sensor 161 via the access point AP1 (step S14).

  Next, when a disaster such as an earthquake occurs and the use of the building 601 as a refuge is started, the wireless terminal device 162 owned by the refugee transmits / receives various information to / from the access point AP1, for example. A communication connection is established between itself and the access point AP1 (step S15), and data such as IP packets and communication environment information is transmitted / received to / from the access point AP1 (step S16).

  Next, when the number of wireless terminal devices 162 increases as the number of evacuees in the building 601 increases, for example, many wireless terminal devices 162 establish communication connections with the access point AP1. In this case, between the access point AP1 and the sensor 161, communication quality deteriorates due to communication by a large number of wireless terminal devices 162, and the building management server 102 can stably collect the measurement results of the sensor 161. The possibility of difficulty increases (step S17).

  In such a situation, the wireless terminal device 162 transmits communication environment information to the access point 151 (step S18).

  Next, the access point 151 transmits communication environment information included in the wireless signal received from the wireless terminal device 162 to the network management server 101 (step S19).

  Next, the network management server 101 determines whether the network condition in the communication system 301 is good based on the communication environment information received from the wireless terminal device 162 via the access point AP1 (step S20).

  If the network management server 101 determines that the network status in the communication system 301 is good (YES in step S20), the network management server 101 waits until new communication environment information is received.

  On the other hand, when the network management server 101 determines that the network condition in the communication system 301 is not good (NO in step S20), for example, the communication connection destination of the wireless terminal device 162 is changed from the access point AP1 to the communication partner of the sensor 161. Instruction information for changing to an access point AP2 that does not exist is transmitted to the access point AP1. Specifically, the network management server 101, for example, when the communication throughput in the wireless terminal device 162 is low, when the loss rate of received packets is high, when the number of retransmissions of transmission packets is large, or when the reception strength of wireless signals is high If weak, it is determined that the network status in the communication system 301 is not good (step S21).

  Next, the access point AP1 includes the instruction information received from the network management server 101 in the wireless signal and transmits it to the wireless terminal device 162 (step S22).

  Next, the wireless terminal device 162 performs processing for disconnecting the communication connection with the access point AP1 based on the instruction information received from the network management server 101 via the access point AP1 (step S23).

  Next, the wireless terminal device 162 establishes a communication connection between itself and the access point AP2 by transmitting / receiving various information to / from the access point AP2 (step S24), and IP packets and communication with the access point AP2 are established. Data such as environmental information is transmitted and received (step S25).

  Thereby, between the access point AP1 and the sensor 161, the influence of communication by the wireless terminal device 162 is reduced, the communication quality is improved, and the building management server 102 can stably collect the measurement results of the sensor 161. Yes (steps S26 and S27). Then, the building management server 102 can accurately and promptly evaluate the building 601 based on the collected measurement results of the sensor 161 (step S28).

  Note that the communication information acquisition unit 21 in the network management server 101 is not limited to the communication environment in the wireless terminal device 162, and may be configured to acquire information related to the communication environment in the access point 151 as communication environment information, for example.

  In addition, the communication information acquisition unit 21 is not limited to the configuration for acquiring the communication environment information via the access point 151, and for example, is configured to acquire the communication environment information from the wireless terminal device 162 via a device other than the access point 151 or directly. May be.

  In addition, the communication control unit 22 in the network management server 101 is not limited to a configuration that performs processing for changing the access point 151 that is a communication partner of the wireless terminal device 162, but may be configured to change some communication operation of the wireless terminal device 162. That's fine.

  For example, the communication control unit 22 may be configured to perform processing for changing the communication parameters of the wireless terminal device 162 as processing for changing the communication operation of the wireless terminal device 162.

  More specifically, for example, the communication control unit 22 changes communication parameters such as a waiting time until packet retransmission and a used channel, which are used when the wireless terminal device 162 performs wireless communication with the access point 151. In addition, the communication control unit 22 is not limited to the configuration for changing the channel used by the access point 151 in the 2.4 GHz band, and further changes the frequency band, for example, switching between the 2.4 GHz band and the 5 GHz band. There may be. As a result, radio wave interference between the sensor 161 and the wireless terminal device 162 can be further suppressed.

  In addition, the communication system 301 is configured to include a plurality of access points 151, but is not limited thereto. The communication system 301 may be configured to include one access point 151. In this case, the communication control unit 22 performs a process of changing the communication parameter of the wireless terminal device 162 as a process of changing the communication operation of the wireless terminal device 162, thereby generating a failure in building evaluation due to network congestion. The object of the present invention can be achieved.

  In this case, the wireless terminal device 162 may not have a function of selecting any one of the plurality of access points 151 for communication.

  FIG. 6 is a diagram showing a communication connection processing sequence between the terminal device and the access point in the communication system according to the embodiment of the present invention.

  Referring to FIG. 6, wireless terminal apparatus 162 and access point 151 perform communication connection processing according to a sequence defined by, for example, IEEE 802.11.

  More specifically, first, the wireless terminal device 162 transmits the authentication information 1 to the access point 151 (step S31).

  Next, the access point 151 receives the authentication information 1 from the wireless terminal device 162, transmits Ack to the wireless terminal device 162 (step S32), and wirelessly transmits the authentication information 2 for the authentication information 1 received from the wireless terminal device 162. It transmits to the terminal device 162 (step S33).

  Next, the wireless terminal device 162 receives the authentication information 2 from the access point 151, transmits Ack to the access point 151 (step S34), and transmits an association request to the access point 151 (step S35).

  Next, the access point 151 receives the association request from the wireless terminal device 162, transmits Ack to the wireless terminal device 162 (step S36), and sends an association response to the association request received from the wireless terminal device 162. (Step S37).

  Next, the wireless terminal device 162 receives an association response from the access point 151 and transmits Ack to the access point 151 (step S38).

  Through the exchange of information as described above, a communication connection is established between the wireless terminal device 162 and the access point 151, and a data frame or the like is transmitted / received between them (step S39).

  By the way, it is important to grasp the dangers such as the damage situation in order to prevent collapse due to aging of structures such as buildings, roads and bridges. For example, it is possible to determine the soundness of the building by installing an acceleration sensor in the building and monitoring the structure.

  Thus, as one form of use of the M2M system, a system in which a sensor capable of wirelessly transmitting a measurement result is installed in a building and the soundness of the building is evaluated based on the measurement result by the sensor can be considered.

  When a disaster such as an earthquake occurs, a building provided with such an M2M system may be used as a shelter and many people may gather at the building.

  In such a case, many people use mobile phones or the like to connect to the evacuation shelter network and acquire various information from the Internet, increasing the possibility of congestion in the network. When such congestion occurs, data indicating the measurement results of sensors installed at the evacuation site is lost, and it is difficult to accurately and quickly predict collapse of the evacuation site due to aftershocks and aging. It may become.

  The possibility of collapse of structures changes every moment due to damage caused by earthquake vibration. In particular, if a shelter where a large number of people live is collapsed, it will cause a great deal of damage, so such prediction must be performed as accurately and quickly as possible.

  On the other hand, in the management device according to the embodiment of the present invention, the communication information acquisition unit 21 acquires communication environment information related to the communication environment in the communication system 301. And the communication control part 22 is based on the communication environment information acquired by the communication information acquisition part 21 in the state where the communication partner of the sensor 161 and the communication partner of the wireless terminal device 162 are the same access point 151. Processing for changing the communication operation of the device 162 is performed.

  As described above, in a state where the communication partner of the sensor 161 and the communication partner of the wireless terminal device 162 are the same access point 151, the communication operation of the wireless terminal device 162 is changed based on the communication environment information in the communication system 301. For example, when the communication environment in the communication system 301 deteriorates, the measurement result of the sensor 161 can be protected with priority over the communication data of the wireless terminal device 162. Thereby, since the communication quality between the sensor 161 and the access point 151 can be kept favorable, the measurement result of the sensor 161 can be stably collected.

  Therefore, in the management device according to the embodiment of the present invention, in the communication system capable of transmitting the measurement result of the sensor installed in the building via the network in the building and evaluating the state of the building based on the measurement result, Occurrence of a building evaluation failure due to network congestion can be suppressed.

  Further, in the management device according to the embodiment of the present invention, the communication control unit 22 performs a process of changing the access point 151 serving as a communication partner of the wireless terminal device 162 as a process of changing the communication operation of the wireless terminal device 162. Do.

  In this way, by changing the access point 151 of the communication connection destination of the wireless terminal device 162, it is possible to more reliably prevent deterioration in communication quality between the sensor 161 and the access point 151 due to communication of the wireless terminal device 162. it can. For example, since the communication connection destination of the wireless terminal device 162 under the access point 151 where the communication load is concentrated can be changed to another access point 151, communication traffic at each access point 151 can be leveled. For example, information loss due to the overflow of the access point 151 can be avoided.

  In the management device according to the embodiment of the present invention, the communication control unit 22 performs a process of changing the communication parameter of the wireless terminal device 162 as a process of changing the communication operation of the wireless terminal device 162.

  With such a configuration, various communication parameters of the wireless terminal device 162 can be changed, and deterioration of communication quality between the sensor 161 and the access point 151 due to interference of the wireless terminal device 162 can be prevented, for example. For example, by changing the frequency band used for wireless communication between the wireless terminal device 162 and the access point 151, overlapping with the used frequency band of the sensor 161 is prevented, and information due to radio wave interference between the sensor 161 and the wireless terminal device 162. Loss can be avoided. Also, for example, in a communication system that employs a communication method that can set a waiting time until signal retransmission, such as CSMA / CA, it is possible to lengthen the waiting time of the wireless terminal device 162 and give priority to wireless transmission of the sensor 161 it can.

  In the management device according to the embodiment of the present invention, the communication information acquisition unit 21 acquires communication environment information related to the communication environment in the wireless terminal device 162.

  With such a configuration, it is possible to easily identify the wireless terminal device 162 with large interference and change the communication operation of the wireless terminal device 162. Further, without adding a special function to the access point 151, for example, by installing predetermined software only in the wireless terminal device 162, processing for grasping the communication environment in the communication system 301 and improving the communication environment is possible. It becomes.

  In the management device according to the embodiment of the present invention, the sensor information acquisition unit 11 acquires the measurement result of the sensor 161. The building evaluation unit 12 evaluates the state of the building 601 based on the measurement result acquired by the sensor information acquisition unit 11.

  With such a configuration, it is possible to provide a management device that realizes both the state evaluation function of the building 601 and the communication control function for suppressing the occurrence of a failure in building evaluation due to network congestion.

  In the communication system according to the embodiment of the present invention, the access point 151 transmits communication environment information related to the communication environment in the communication system 301 to the management apparatus 201. Then, the management device 201 communicates with the wireless terminal device 162 based on the communication environment information received from the access point 151 when the communication partner of the sensor 161 and the communication partner of the wireless terminal device 162 are the same access point 151. Instruction information for changing the operation is transmitted to the access point 151.

  As described above, in a state where the communication partner of the sensor 161 and the communication partner of the wireless terminal device 162 are the same access point 151, the communication operation of the wireless terminal device 162 is changed based on the communication environment information in the communication system 301. For example, when the communication environment in the communication system 301 deteriorates, the measurement result of the sensor 161 can be protected with priority over the communication data of the wireless terminal device 162. Thereby, since the communication quality between the sensor 161 and the access point 151 can be kept favorable, the measurement result of the sensor 161 can be stably collected.

  Therefore, in the communication system according to the embodiment of the present invention, the measurement result of the sensor installed in the building is transmitted via the network in the building, and in the communication system capable of evaluating the state of the building based on the measurement result, Occurrence of a building evaluation failure due to network congestion can be suppressed.

  The above embodiment should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The above description includes the following features.

[Appendix 1]
A management device in a communication system capable of evaluating the state of the building based on a measurement result of a sensor installed in a building and capable of communicating with a radio base station device,
A communication information acquisition unit for acquiring communication environment information related to a communication environment in the communication system;
Based on the communication environment information acquired by the communication information acquisition unit in a state where the communication partner of the sensor and the communication partner of the wireless terminal device capable of communicating with the wireless base station device are the same wireless base station device, A communication control unit that performs processing to change the communication operation of the wireless terminal device,
The building is a shelter,
The wireless base station device is a management device that is an access point of a wireless LAN system standardized by IEEE 802.11.

[Appendix 2]
One or more radio base station apparatuses;
A communication system comprising a management device capable of communicating with the radio base station device,
The communication system is a sensor installed in a building and can evaluate the state of the building based on a measurement result of a sensor that can communicate with the wireless base station device.
The radio base station apparatus transmits communication environment information related to a communication environment in the communication system to the management apparatus,
The management apparatus is configured to receive the communication environment information received from the radio base station apparatus in a state where the communication counterpart of the sensor and the communication counterpart of a radio terminal apparatus capable of communicating with the radio base station apparatus are the same radio base station apparatus On the basis of the instruction information for changing the communication operation of the wireless terminal device to the wireless base station device,
The building is a shelter,
The wireless base station apparatus is a communication system that is an access point of a wireless LAN system standardized by IEEE 802.11.

DESCRIPTION OF SYMBOLS 11 Sensor information acquisition part 12 Building evaluation part 21 Communication information acquisition part 22 Communication control part 101 Network management server 102 Building management server 103 Local information management server 104 Gateway 105 Storage device 151 Access point (radio base station apparatus)
201 Management Device 301 Communication System 401 Internal Network 501 Storage Device 601 Building

Claims (10)

At least one of the magnitude of the vibration of the building and the amplitude characteristic of the vibration of the building based on the measurement result transmitted from the sensor installed in the building and capable of communicating with the radio base station apparatus to the radio base station apparatus Based on the management device in the communication system comprising an evaluation device capable of evaluating the soundness of the building as the state of the building ,
A communication information acquisition unit for acquiring communication environment information related to a communication environment in the communication system;
A wireless base station device that communicates with the communication partner of the sensor and a wireless terminal device that can communicate with the wireless base station device and does not transmit the measurement result of the sensor used for evaluation of the soundness of the building. And a communication control unit that performs a process of changing a communication operation of the wireless terminal device based on the communication environment information acquired by the communication information acquisition unit. The wireless terminal device can communicate by selecting any of the plurality of wireless base station devices,
The management apparatus according to claim 1, wherein the communication control unit performs a process of changing the radio base station apparatus serving as a communication partner of the radio terminal apparatus as the process of changing the communication operation.   The management apparatus according to claim 1, wherein the communication control unit performs a process of changing a communication parameter of the wireless terminal device as a process of changing the communication operation.   The management apparatus according to any one of claims 1 to 3, wherein the communication information acquisition unit acquires communication environment information related to a communication environment in the wireless terminal device. The management device further includes the evaluation device,
A sensor information acquisition unit for acquiring a measurement result of the sensor;
The building evaluation part which evaluates the soundness of the said building as a state of the said building based on the said measurement result acquired by the said sensor information acquisition part is provided in any one of Claims 1-4. Management device. One or more radio base station apparatuses;
A communication system comprising a management device capable of communicating with the radio base station device,
The communication system is a sensor installed in a building, and a magnitude of vibration of the building and an amplitude of vibration of the building based on a measurement result transmitted from the sensor capable of communicating with the radio base station device to the radio base station device An evaluation device capable of evaluating the soundness of the building as the state of the building based on at least one of the characteristics ;
The radio base station apparatus transmits communication environment information related to a communication environment in the communication system to the management apparatus,
The management device is a communication partner of the sensor, and a wireless terminal device that can communicate with the wireless base station device and does not transmit a measurement result of a sensor used for evaluating the soundness of the building. Are in the same radio base station apparatus, based on the communication environment information received from the radio base station apparatus, transmit instruction information for changing the communication operation of the radio terminal apparatus to the radio base station apparatus ,Communications system. At least one of the magnitude of the vibration of the building and the amplitude characteristic of the vibration of the building based on the measurement result transmitted from the sensor installed in the building and capable of communicating with the radio base station apparatus to the radio base station apparatus A communication control method of a management device in a communication system including an evaluation device capable of evaluating the soundness of the building as the state of the building ,
Obtaining communication environment information relating to a communication environment in the communication system;
A wireless base station device that communicates with the communication partner of the sensor and a wireless terminal device that can communicate with the wireless base station device and does not transmit the measurement result of the sensor used for evaluation of the soundness of the building. And a process of changing the communication operation of the wireless terminal device based on the acquired communication environment information. A communication control method in a communication system comprising one or a plurality of radio base station apparatuses and a management apparatus capable of communicating with the radio base station apparatus,
The communication system is a sensor installed in a building, and a magnitude of vibration of the building and an amplitude of vibration of the building based on a measurement result transmitted from the sensor capable of communicating with the radio base station device to the radio base station device An evaluation device capable of evaluating the soundness of the building as the state of the building based on at least one of the characteristics ;
The wireless base station device transmitting communication environment information related to a communication environment in the communication system to the management device;
The communication device of the wireless terminal device that is a communication terminal of the sensor and a wireless terminal device that can communicate with the wireless base station device and does not transmit the measurement result of the sensor used for evaluation of the soundness of the building Are in the same radio base station apparatus, based on the communication environment information received from the radio base station apparatus, transmit instruction information for changing the communication operation of the radio terminal apparatus to the radio base station apparatus And a communication control method. At least one of the magnitude of the vibration of the building and the amplitude characteristic of the vibration of the building based on the measurement result transmitted from the sensor installed in the building and capable of communicating with the radio base station apparatus to the radio base station apparatus Is a communication control program used in a management device in a communication system including an evaluation device capable of evaluating the soundness of the building as the state of the building ,
Obtaining communication environment information relating to a communication environment in the communication system;
A wireless base station device that communicates with the communication partner of the sensor and a wireless terminal device that can communicate with the wireless base station device and does not transmit the measurement result of the sensor used for evaluation of the soundness of the building. A communication control program for executing a process of changing a communication operation of the wireless terminal device based on the acquired communication environment information in a state where A communication control program used in a communication system including one or a plurality of radio base station apparatuses and a management apparatus capable of communicating with the radio base station apparatus,
The communication system is a sensor installed in a building, and a magnitude of vibration of the building and an amplitude of vibration of the building based on a measurement result transmitted from the sensor capable of communicating with the radio base station device to the radio base station device An evaluation device capable of evaluating the soundness of the building as the state of the building based on at least one of the characteristics ;
On the computer,
The wireless base station device transmitting communication environment information related to a communication environment in the communication system to the management device;
The communication device of the wireless terminal device that is a communication terminal of the sensor and a wireless terminal device that can communicate with the wireless base station device and does not transmit the measurement result of the sensor used for evaluation of the soundness of the building Are in the same radio base station apparatus, based on the communication environment information received from the radio base station apparatus, transmit instruction information for changing the communication operation of the radio terminal apparatus to the radio base station apparatus And a communication control program for executing the steps.

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