JP2011030053A - Radio communication system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To directly and efficiently set a network identifier to a radio communication apparatus from a remote location. <P>SOLUTION: An own network identifier (first network identifier (PANID=0)), and a network identifier (second network identifier (fixed PANID=9999)) identical to a specific network identifier set in a ratio operation terminal 3 are set to a radio communication apparatus 2-3. The radio communication apparatus 2-3 alternately repeats a connection request to a radio network identified by the first network identifier and a connection request to a radio network identified by the second network identifier. When the ratio operation terminal 3 organizes a radio network identified by the fixed PANID=9999, the radio communication apparatus 2-3 is connected to the radio network. Thereby, the network identifier (first network identifier) of the radio communication apparatus 2-3 can be updated from the ratio operation terminal 3. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a wireless communication system using a network identifier.

  Conventionally, in this type of wireless communication system, a wireless network existing in the system is specified using a network identifier. For example, in the case of a wireless LAN, ESSID is used as a network identifier, and in a wireless communication system using a Zigbee (registered trademark) protocol, a PANID is used to identify a wireless network in the system.

  In this case, the wireless communication devices constituting the wireless network are connected to the wireless network specified by the same network identifier as the network identifier set for itself (hereinafter also referred to as its own network identifier). For example, if its own network identifier is PANID = 100, it is connected to a wireless network specified by PANID = 100.

  The network identifier is directly assigned to the wireless communication device, and if the assigned network identifier is not determined at the device installation stage, the numbering operation is required after the device is installed. Usually, the network identifier numbering operation is performed manually. In the wireless communication device, the initial value of the network identifier is set as PANID = 0 at the factory shipment stage.

JP 2006-191244 A

  However, wireless communication devices are often installed behind the ceiling, and there is a problem that the network identifier numbering work for the wireless communication devices is complicated. This problem occurs in the same way when an incorrect numbering is corrected or renumbered after installation.

  In Patent Document 1, in a wireless sensor network including a terminal device including a sensor and a wireless node connected to the sensor, the terminal device receives a predetermined event when a predetermined event is received. There is disclosed a wireless sensor network that notifies reception of a predetermined event and makes a transition to a network identifier to be transition notified from a predetermined server in response to the notification. In this wireless sensor network, it is possible to notify a wireless terminal of a network identifier from a remote location.

  However, when the configuration shown in Patent Document 1 is applied, when each wireless communication device receives a predetermined signal, the server notifies the server and receives a network identifier from the server. Work to store the correspondence is required, and the server must be installed in the communication area. There are a plurality of wireless communication devices, and this configuration is insufficient from the viewpoint of work efficiency and cost in order to efficiently perform the correction after the operation from the initial setting of the network identifier.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a wireless communication system capable of directly and efficiently setting a network identifier for a wireless communication device from a remote location. Is to provide.

  In order to achieve such an object, the present invention provides a wireless network specified by a network identifier, a wireless communication device connected to a wireless network specified by the same network identifier as the network identifier set to itself, A wireless communication system including a device information setting terminal in which a unique network identifier is set, wherein the network identifier set in the wireless communication device is a first network identifier and is set in the device information setting terminal. A network identifier storage means for storing the first network identifier and the second network identifier, and a radio specified by the first network identifier. To connect to the network A wireless network connection means for making a connection request to the wireless network specified by the second network identifier when the wireless network specified by the first network identifier cannot be connected; During connection with the wireless network specified by the network identifier, a desired network identifier designated by the user is received from the device information setting terminal sent from the device information setting terminal, and the received network identifier is set to self. Network identifier updating means for updating the first network identifier stored in the network identifier storage means as a new network identifier, and a unique network identifier storage means for storing a unique network identifier in the device information setting terminal; , You There an input portion of a desired network identifier specifying, is provided with a network identifier transmitting means for transmitting the network identifier input from the input unit to the wireless communication device.

  In the present invention, when the wireless network connection means makes a connection request to the wireless network specified by the first network identifier and cannot connect to the wireless network specified by the first network identifier, The connection request to the wireless network specified by the second network identifier is made. As a specific example, the connection request to the wireless network specified by the first network identifier and the wireless specified by the second network identifier are used. It can be considered that connection requests to a network are alternately repeated until one of the wireless networks is connected.

  Further, the device information setting terminal is provided with a wireless network management means for holding and stopping the wireless network specified by the second network identifier by a user operation, or the second network identifier held by the wireless network management means Wireless communication device list display means for displaying a list of wireless communication devices connected to the wireless network specified by the above, and when a desired wireless communication device is selected from the displayed list of wireless communication devices, the network for the wireless communication device Network identifier input unit display means for displaying the identifier input unit may be provided.

  Whether the connected wireless network exists after the wireless communication device is connected to one of the wireless network specified by the first network identifier and the wireless network specified by the second network identifier. It may be possible to provide network presence confirmation means for starting the operation of the wireless network connection means when the presence or absence of the connected wireless network is no longer confirmed.

  Further, in a state where the wireless communication device is connected to the wireless network specified by the first network identifier, fixed cycle active mode shifting means for shifting the operation mode from the sleep mode to the active mode at a fixed cycle; Active mode maintaining means for maintaining the operation mode in the active mode may be provided when connected to the wireless network specified by the network identifier.

  According to the present invention, the same network identifier as the unique network identifier set in the device information setting terminal is stored in the wireless communication device as the second network identifier, and the wireless network specified by the second network identifier is stored. And requesting a desired network identifier designated by the user at the device information setting terminal sent from the device information setting terminal during connection with the wireless network specified by the second network identifier. Since the first network identifier is updated with the received network identifier as a new network identifier set for itself, the setting of the network identifier directly and efficiently from the device information setting terminal to the wireless communication device is performed. It can be done well.

It is a figure which shows the example which applied the radio | wireless communications system which concerns on this invention to the radio | wireless communications system using a ZigBee protocol. It is a flowchart which shows the specific process operation | movement which the radio | wireless communication apparatus in this radio | wireless communications system performs. It is a flowchart which shows the specific process operation | movement which the radio | wireless operation terminal in this radio | wireless communications system performs. It is a sequence diagram for demonstrating operation | movement at the time of setting a desired network identifier to a radio | wireless communication apparatus from a radio | wireless operation terminal in this radio | wireless communications system. It is a figure which shows the state by which the radio | wireless communication apparatus was connected to the radio | wireless network held by the radio | wireless operation terminal in this radio | wireless communications system. It is a figure which shows a mode that the network identifier (1st network identifier) in a radio | wireless communication apparatus is updated by the desired network identifier which the user from a radio | wireless operation terminal designates. It is a figure which shows the state which stopped the wireless network which the radio | wireless operation terminal is holding. It is a figure which shows the state which the wireless communication apparatus with which the network identifier (1st network identifier) was updated succeeded in the connection to the wireless network which the coordinator is holding. It is a figure which shows the input part of the list of the radio | wireless communication apparatus which a radio | wireless operation terminal displays, and the desired network identifier from a user. It is a functional block diagram of a radio | wireless communication apparatus. It is a functional block diagram of a radio | wireless operation terminal. It is a sequence diagram at the time of setting a network identifier from a wireless operation terminal when a wireless communication device is a wireless sensor. It is a figure which shows the state by which the wireless sensor was connected to the wireless network hosted by the wireless operation terminal. It is a figure which shows the input part of the list of the radio | wireless communication apparatus which a radio | wireless operation terminal displays, and the desired network identifier from a user. It is a figure which shows a mode that the network identifier (1st network identifier) in a wireless sensor is updated by the desired network identifier which the user from a wireless operation terminal designates. It is a figure which shows the state which installed the wireless sensor in the connectable area of the wireless network which the coordinator is holding. It is a figure which shows the state which the wireless sensor by which the network identifier (1st network identifier) was updated succeeded in the connection to the wireless network which the coordinator is holding. It is a functional block diagram of a wireless sensor.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 shows an example in which a radio communication system according to the present invention is applied to a radio communication system using a ZigBee protocol.

  In this example, a coordinator 1 and four routers 2 (2-1 to 2-4) are installed behind the ceiling. In addition, a portable wireless operation terminal 3 is arranged in the living room. In this wireless communication system, the router 2 corresponds to a wireless communication device in the present invention, and the wireless operation terminal 3 corresponds to a device information setting terminal. Hereinafter, the router 2 is referred to as a wireless communication device.

  In this example, PANID = 100 is set as the network identifier in the coordinator 1, and fixed PANID = 9999 is set as the unique network identifier in the wireless operation terminal 3. The wireless communication devices 2-1 to 2-4 include a unique identifier (physical identifier), its own network identifier (first network identifier), and a unique network identifier set in the wireless operation terminal 3. The same network identifier (second network identifier) is set.

  In this example, identifier # 01, PANID = 100 (first network identifier), and fixed PANID = 9999 (second network identifier) are set in the wireless communication device 2-1. Similarly, identifier # 02, PANID = 100, and fixed PANID = 9999 are set in the wireless communication device 2-2, identifier # 03, PANID = 0, and fixed PANID = 9999 are set in the wireless communication device 2-3. Identifier # 04, PANID = 0, and fixed PANID = 9999 are set in the wireless communication device 2-4.

  In this example, the coordinator 1 holds a wireless network specified by PANID = 100, and the wireless communication devices 2-1 and 2-2 are connected to the wireless network specified by PANID = 100 held by the coordinator 1. It is assumed that That is, since PANID = 100 is set as the network identifier of the wireless communication devices 2-1 and 2-2, the wireless communication devices 2-1 and 2-2 are connected to the wireless network held by the coordinator 1 specified by this PANID = 100.

  In this example, the wireless operation terminal 3 has a function as a coordinator for holding a wireless network specified by a fixed PANID = 9999. In this state, the wireless operation terminal 3 has a wireless network specified by a fixed PANID = 9999. It is assumed that the wireless communication devices 2-3 and 2-4 are not connected to any wireless network. The wireless communication devices 2-3 and 2-4 are assumed to be located within the communicable range of the wireless operation terminal 3.

  Hereinafter, on the premise that the wireless communication device 2 and the wireless operation terminal 3 are in such a state, referring to the flowcharts shown in FIGS. 2 and 3 and the sequence diagram shown in FIG. explain.

[Request for connection to wireless network from wireless communication device]
The wireless communication devices 2-3 and 2-4 make a connection request to the wireless network specified by its own network identifier, that is, the first network identifier (PANID = 0) (step S101 (FIG. 2), FIG. 4). : Arrow (1)). In this example, the network subscription process is executed based on the ZigBee protocol convention as a connection request. However, since there is no wireless network identified by PANIDID = 0, connection to the wireless network identified by the first network identifier fails (NO in step S102).

  Therefore, the wireless communication devices 2-3 and 2-4 are wireless networks specified by the same network identifier as the unique network identifier set in the wireless operation terminal 3, that is, the second network identifier (fixed PANID = 9999). Is made a connection request (step S103, FIG. 4: arrow (2)). In this case, since the wireless operation terminal 3 does not hold the wireless network specified by the fixed PANID = 9999, the wireless operation terminal 3 also fails to connect to the wireless network specified by the second network identifier (fixed PANID = 9999). (NO in step S104).

  The wireless communication devices 2-3 and 2-4 connect to the wireless network specified by the first network identifier (PANID = 0) and also to the wireless network specified by the second network identifier (fixed PANID = 9999). Since the connection fails, the processing operations in steps S101 to S104 are repeated. That is, the connection request to the wireless network specified by the first network identifier and the connection request to the wireless network specified by the second network identifier are alternately repeated.

[Holding of wireless network from wireless operation terminal]
Here, it is assumed that a wireless network specified by the fixed PANID = 9999 is held by the user operation in the wireless operation terminal 3 (FIG. 4: arrow (3)). In this case, the wireless operation terminal 3 waits for a network opening request from the user (step S201 (FIG. 3)). A wireless network is held (step S203). Then, it waits for a node participating in the wireless network specified by the held fixed PANID = 9999 (step S204).

[Connection of wireless communication device to wireless network held by wireless operation terminal]
The wireless communication devices 2-3 and 2-4 are connected to the wireless network specified by the first network identifier (PANID = 0) and the wireless network specified by the second network identifier (fixed PANID = 9999). When the wireless network specified by the fixed PANID = 9999 is held, the connection to the wireless network specified by the second network identifier (fixed PANID = 9999) is successfully established. (YES in step S104, FIG. 4: arrows (5-3), (5-4)).

  FIG. 5 shows a state in which the wireless communication devices 2-3 and 2-4 are connected to the wireless network specified by the fixed PANID = 9999 held by the wireless operation terminal 3. In this example, since the wireless operation terminal 3 is a coordinator and the wireless communication devices 2-3 and 2-4 are connected as child nodes of the wireless operation terminal 3, the wireless operation terminal 3 is connected to the wireless communication devices 2-3 and 2-2. 4 can be recognized.

  When the present invention is carried out on a wireless communication protocol that is not recognized by the wireless operation terminal 3 as having joined the wireless network, the wireless communication devices 2-3 and 2-4 can communicate with the wireless network. A packet for notifying its own connection is transmitted to the wireless operation terminal 3 at the time of connection, and the wireless operation terminal 3 recognizes the connection of the wireless communication devices 2-3 and 2-4 by receiving the packet. Also good.

[Displaying a list of wireless communication devices connected to the wireless network hosted by the wireless operation terminal]
When the wireless operation terminal 3 confirms the connection of the wireless communication devices 2-3 and 2-4 to the wireless network specified by the fixed PANID = 9999 held by itself (YES in step S205), the wireless communication device 2- The identifiers # 03 and # 04 of 3 and 2-4 are displayed in the list G1 (FIG. 9A) of the wireless communication devices connected to the wireless network held by itself (step S206).

  In step S206, the wireless operation terminal 3 transmits a message asking for a unique identifier to the wireless communication devices 2-3 and 2-4 (FIG. 4: arrows (6-1) and (6-2)). The response message from the wireless communication devices 2-3 and 2-4 in response to this inquiry is received (FIG. 4: arrows (7-1) and (7-2)), and the wireless communication device 2- included in the response message is received. The identifiers # 03 and # 04 of 3 and 2-4 are displayed in the wireless communication device list G1.

[Periodically check if the connected wireless network from the wireless communication device exists]
When the wireless communication devices 2-3 and 2-4 have succeeded in connecting to the wireless network specified by the fixed PANID = 9999 held by the wireless operation terminal 3, a network presence confirmation message indicating whether or not this wireless network exists. Is transmitted to the wireless operation terminal 3 that is the parent node (step S107, FIG. 4: arrows (8-1), (8-2)).

  The wireless operation terminal 3 receives the network existence confirmation message from the wireless communication devices 2-3 and 2-4 (YES in step S211), and indicates that the wireless network specified by the fixed PANID = 9999 exists. The message is returned (step S212, FIG. 4: arrows (9-1) and (9-2)).

  The wireless communication devices 2-3 and 2-4 receive the presence message from the wireless operation terminal 3 (YES in step S108), and repeat the transmission of the network presence confirmation message to the wireless operation terminal 3 (step S107).

[Setting of desired network identifier to wireless communication device from wireless operation terminal]
Here, it is assumed that the user wants to set PANID = 100 as a desired network identifier in the wireless communication devices 2-3 and 2-4.

  In this case, the user first selects the identifier # 03 of the wireless communication device 2-3 in the wireless communication device list G1 (FIG. 9A) displayed by the wireless operation terminal 3. Then, the wireless operation terminal 3 displays a network identifier input unit G2 (FIG. 9B). From this input unit G2, the user inputs PANID = 100 as a desired network identifier.

  Then, the wireless operation terminal 3 transmits the network identifier input from the input unit G2 to the wireless communication device 2-3 as a desired network identifier designated by the user (Steps S207 to S209, FIG. 4: arrow (10). )).

  The wireless communication device 2-3 receives the network identifier transmitted from the wireless operation terminal 3 (YES in step S105), and stores the received network identifier as its own new network identifier in the memory. Updates its own network identifier (first network identifier) (step S106). As a result, PANID = 0 stored in the memory is rewritten to PANID = 100 (see FIG. 6).

  Next, the user selects the identifier # 04 of the wireless communication device 2-4 in the wireless communication device list G1 (FIG. 9A) displayed by the wireless operation terminal 3. Then, similarly to the case where the identifier # 03 is selected, the wireless operation terminal 3 displays a desired network identifier input unit G2 (FIG. 9B) from the user. Then, the user inputs PANID = 100 as a desired network identifier from the input unit G2.

  Then, the wireless operation terminal 3 transmits the network identifier input from the input unit G2 to the wireless communication device 2-4 as a desired network identifier designated by the user (steps S207 to S209, FIG. 4: arrow (11)). ).

  The wireless communication device 2-4 receives the network identifier transmitted from the wireless operation terminal 3 (YES in step S105), and stores the received network identifier as its own new network identifier in the memory. Updates its own network identifier (first network identifier) (step S106). As a result, PANID = 0 stored in the memory is rewritten to PANID = 100 (see FIG. 6).

[Retry to join wireless network specified by updated network identifier]
After setting the desired network identifier in the wireless communication devices 2-3 and 2-4 in this way, the user stops the operation of the wireless network specified by the fixed PANID = 9999 held by the wireless operation terminal 3 (FIG. 4: Arrow (12)).

  When receiving a wireless network stop request from the user (YES in step S214), the wireless operation terminal 3 returns to a state of waiting for a wireless network holding request from the user (see step S201, FIG. 7).

  When the operation of the wireless network specified by the fixed PANID = 9999 held by the wireless operation terminal 3 is stopped, a network presence confirmation message transmitted from the wireless communication devices 2-3 and 2-4 is displayed (FIG. 4). : Arrows (13-1) and (13-2)), the presence message response from the wireless operation terminal 3 is lost (FIG. 4: Arrows (14-1) and (14-2)).

  Accordingly, the wireless communication devices 2-3 and 2-4 return to step S101 in response to NO in step S108, and are identified by their network identifier, that is, the updated first network identifier (PANID = 100). A connection request is made to the wireless network.

  In this case, a wireless network specified by PANID = 100 is held by the coordinator 1, and the wireless communication devices 2-3 and 2-4 go to the wireless network specified by PANID = 100 held by the coordinator 1. (See step S102, FIG. 4: arrows (15-1) and (15-2), see FIG. 8).

  After connecting to the wireless network specified by PANID = 100, the wireless communication devices 2-3 and 2-4 transmit a network presence confirmation message as to whether or not this wireless network exists to the coordinator 1 that is the parent node. (Steps S107 and S108, FIG. 4: Arrows (16-1) and (16-2)). Transmission of the network presence confirmation message to the coordinator 1 is performed periodically.

  In this example, it is assumed that the connection from the wireless communication devices 2-3 and 2-4 to the wireless network specified by PANID = 100 (first network identifier) is successful (YES in step S102). If the connection with the wireless network fails (NO in step S102), a connection request to the wireless network specified by fixed PANID = 9999 (second network identifier) is made (step S103).

  In this case, since the connection with the wireless network specified by the fixed PANID = 9999 (second network identifier) also fails, the wireless communication devices 2-3 and 2-4 are specified by the first network identifier. The connection request to the wireless network and the connection request to the wireless network specified by the second network identifier are alternately repeated until connected to any one of the wireless networks.

[Function block diagram]
In this wireless communication network, the wireless communication device 2 and the wireless operation terminal 3 are realized by hardware including a processor and a storage device, and a program that realizes various functions in cooperation with these hardware. FIG. 10 shows a functional block diagram of the wireless communication device 2, and FIG. 11 shows a functional block diagram of the wireless operation terminal 3.

  The wireless communication device 2 has its own network identifier (first network identifier (PANID = 0)) and the same network identifier (second network identifier (fixed PANID) as the unique network identifier set in the wireless operation terminal 3. = 9999)), and either a connection request to the wireless network specified by the first network identifier and a connection request to the wireless network specified by the second network identifier. Wireless network connection unit 2B that repeats alternately until it is connected to the other wireless network.

  In addition, after the wireless communication device 2 is connected to either the wireless network specified by the first network identifier by the wireless network connection unit 2B or the wireless network specified by the second first network identifier, A network existence confirmation message indicating whether or not the wireless network exists is sent to the parent node of the connected wireless network, and a response that the wireless network exists is returned from the parent node of the connected wireless network. If not, the wireless operation terminal sent from the wireless operation terminal 3 during the connection between the network existence confirmation unit 2C for starting the operation of the wireless network connection unit 2B and the wireless network specified by the second network identifier The desired net specified by the user in 3 Receive over click identifier, and a network identifier update unit 2D network identifier storage unit 2A of the received network identifier as a new network identifier itself updates the first network identifier stored.

  In the configuration of the wireless communication device 2, the wireless network connection unit 2B is a first wireless network connection unit that makes a connection request to the wireless network specified by the first network identifier stored in the network identifier storage unit 2A. 2B1 and a second wireless network connection unit 2B2 that makes a connection request to the wireless network specified by the second network identifier stored in the network identifier storage unit 2A, and the first wireless network connection unit 2B1 sends an execution request to the second wireless network connection unit 2B2 when it cannot connect to the wireless network specified by the first network identifier, and the second wireless network connection unit 2B2 The wireless network specified by the network identifier If it can not be connected with click to the first wireless network connection unit 2B1 sends the execution request. Further, when the first wireless network connection unit 2B1 is able to connect to the wireless network specified by the first network identifier, the first wireless network connection unit 2B1 periodically transmits a network presence confirmation message to the parent node of the wireless network. When the second wireless network connection unit 2B2 is instructed to the existence confirmation unit 2C and can connect to the wireless network specified by the second network identifier, the second wireless network connection unit 2B2 sends a network existence confirmation message to the parent node of the wireless network. It instructs the network existence confirmation unit 2C to perform periodic transmission.

  The execution order of the first wireless network connection unit 2B1 and the second wireless network connection unit 2B2 in the wireless network connection unit 2B is the order of the first wireless network connection unit 2B1 and the second wireless network connection unit 2B2. It is said that. That is, when an execution request for starting an operation from the network existence confirmation unit 2C to the wireless network connection unit 2B is sent, the wireless network first identified by the first network identifier by the first wireless network connection unit 2B1 When a connection request to the wireless network specified by the first network identifier is not made and connection to the wireless network specified by the second network identifier is made by the second wireless network connection unit 2B2 A connection request is made.

  In this functional block diagram of the wireless communication device 2, the network identifier storage unit 2A corresponds to the network identifier storage unit in the present invention, the wireless network connection unit 2B corresponds to the wireless network connection unit, and the network presence confirmation unit 2C The network identifier update unit 2D corresponds to the presence confirmation unit, and the network identifier update unit.

  The wireless operation terminal 3 is specified by a unique network identifier storage unit 3A for storing a unique network identifier (PANID = 9999) and a unique network identifier stored in the unique network identifier storage unit 3A, that is, a second network identifier. A unique identifier for the wireless communication device 2 connected to the wireless network specified by the second network identifier held by the wireless network management unit 3B and the second network identifier held by the wireless network management unit 3B The node information acquisition unit 3C receives a response message from the wireless communication device 2 in response to the inquiry.

  In addition, the wireless operation terminal 3 displays a unique identifier included in the response message received by the node information acquisition unit 3C in the wireless communication device list G1, and the node information display unit 3D displays the node information display unit 3D. When a desired wireless communication device is selected from the list G1 of wireless communication devices to be performed, a network identifier input portion display portion 3E that displays a network identifier input portion G2 for the wireless communication device, and this network identifier input portion display portion 3E A network identifier transmission unit 3F for transmitting the network identifier input from the network identifier input unit G2 to be displayed to the wireless communication device 2;

  In the functional block diagram of the wireless operation terminal 3, the unique network identifier storage unit 3A corresponds to the unique network identifier storage unit in the present invention, the wireless network management unit 3B corresponds to the wireless network management unit, and the node information acquisition unit 3C. The node information display unit 3B corresponds to a wireless communication device list display unit, the network identifier input unit display unit 3E corresponds to a network identifier input unit display unit, and the network identifier transmission unit 3F corresponds to a network identifier transmission unit.

  In the embodiment described above, the network existence confirmation unit 2C is provided in the wireless communication device 2, and a network existence confirmation message is periodically transmitted to the parent node of the wireless network that has been successfully connected. Confirming that the wireless network no longer exists by not receiving a response to, but stopping the wireless network held by itself from the parent node of the wireless network successfully connected A notification may be sent, and by receiving this notification, the wireless communication device 2 may confirm that the wireless network no longer exists.

  In the above-described embodiment, the wireless operation terminal 3 displays a list G1 of wireless communication devices connected to the wireless network specified by the fixed PANID = 9999 held by the wireless operation terminal 3, and the wireless communication device 3 Although the network identifier input unit G2 for the wireless communication device selected from the list G1 is displayed, the current network identifier set for the wireless communication device is displayed in the network identifier input unit G2. You may do it. That is, when a desired wireless communication device is selected from the wireless communication device list G1, the current network identifier set for the wireless communication device is inquired, and the network returned in response to the inquiry is returned. The identifier may be displayed on the network identifier input unit G2 as a reference when inputting a new network identifier.

[Setting network identifier for wireless sensor]
In the embodiment described above, the case where the wireless communication device 2 is a router has been described. However, when the wireless communication device 2 is a wireless sensor, the network identifier can be set from the wireless operation terminal 3 in the same manner. .

  The wireless sensor requires a cycle of several years as a battery replacement cycle in order to save battery replacement cost and labor. For this reason, in order to suppress current consumption, the wireless sensor is generally in a sleep mode at all times, and the wireless sensor is in the active mode and performs transmission only when measurement and transmission are performed. That is, the wireless sensor has a sleep mode and an active mode, and has a function of switching the operation mode from the sleep mode to the active mode at regular intervals.

  FIG. 12 shows a sequence diagram when setting a network identifier from the wireless operation terminal 3 when the wireless communication device 2 is a wireless sensor. In this example, it is assumed that the wireless communication device 2-5 is a wireless sensor (end device). The wireless sensor 2-5 is assumed to be located outside the connectable area of the wireless network specified by PANID = 100 shown in FIG.

  The wireless sensor 2-5 has an identifier # 05, PANID = 0 (first network identifier), and fixed PANID = 9999 (second network identifier) in the same manner as the wireless communication devices 2-1 to 2-4. Is set.

  The wireless sensor 2-5 makes a connection request to the wireless network specified by its own network identifier, that is, the first network identifier (PANID = 0) (FIG. 12: arrow (1)). In this case, since there is no wireless network specified by PANIDID = 0, connection to the wireless network specified by the first network identifier fails.

  Therefore, the wireless sensor 2-5 requests connection to the wireless network specified by the same network identifier as the unique network identifier set in the wireless operation terminal 3, that is, the second network identifier (fixed PANID = 9999). (FIG. 12: arrow (2)). In this case, since the wireless operation terminal 3 has not yet held the wireless network specified by the fixed PANID = 9999, the wireless operation terminal 3 also fails to connect to the wireless network specified by the second network identifier (fixed PANID = 9999). To do.

  The wireless sensor 2-5 fails to connect to the wireless network specified by the first network identifier (PANID = 0) or to the wireless network specified by the second network identifier (fixed PANID = 9999). Therefore, the connection request to the wireless network specified by the first network identifier and the connection request to the wireless network specified by the second network identifier are repeated.

  Here, it is assumed that a wireless network specified by a fixed PANID = 9999 is held by the user operation in the wireless operation terminal 3 (FIG. 12: arrow (3)). When the wireless network specified by the fixed PANID = 9999 is held, the wireless sensor 2-5 succeeds in connecting to the wireless network specified by the fixed PANID = 9999 (FIG. 12: arrow (5)).

  FIG. 13 shows a state where the wireless sensor 2-5 is connected to the wireless network specified by the fixed PANID = 9999 held by the wireless operation terminal 3. In this example, since the wireless operation terminal 3 is a coordinator and the wireless sensor 2-5 is connected as a child node of the wireless operation terminal 3, the wireless operation terminal 3 recognizes that the wireless sensor 2-5 is connected. be able to. In a state where the wireless sensor 2-5 is connected to the wireless network specified by the fixed PANID = 9999, the wireless sensor 2-5 maintains an active mode state and is in a state where reception is always possible.

  When the wireless operation terminal 3 confirms the connection of the wireless sensor 2-5 to the wireless network specified by the fixed PANID = 9999 held by itself, the wireless operation terminal 3 holds the identifier # 05 of the wireless sensor 2-5. It is displayed in a list G1 (see FIG. 14A) of wireless communication devices connected to the unrelated network (FIG. 12: arrows (6) and (7)).

  When the wireless sensor 2-5 succeeds in connecting to the wireless network specified by the fixed PANID = 9999 held by the wireless operation terminal 3, the network sensor confirms whether or not this wireless network exists as a parent node. It transmits to the radio | wireless operation terminal 3 (FIG. 12: Arrow (8)).

  The wireless operation terminal 3 receives the network presence confirmation message from the wireless sensor 2-5, and returns a response message indicating that the wireless network specified by the fixed PANID = 9999 exists (FIG. 12: arrow (9 )).

  The wireless sensor 2-5 receives the response message indicating that the wireless network specified by the fixed PANID = 9999 is present from the wireless operation terminal 3, and repeats transmission of the network presence confirmation message to the wireless operation terminal 3. .

  Here, it is assumed that the user wants to set PANID = 100 as a desired network identifier in the wireless sensor 2-5. In this case, the user selects the identifier # 05 of the wireless sensor 2-5 in the wireless communication device list G1 displayed by the wireless operation terminal 3. Then, the wireless operation terminal 3 displays a network identifier input unit G2 (FIG. 14B). From this input unit G2, the user inputs PANID = 100 as a desired network identifier.

  Then, the wireless operation terminal 3 transmits the network identifier input from the input unit G2 to the wireless sensor 2-5 as a desired network identifier designated by the user (FIG. 12: arrow (10)).

  The wireless sensor 2-5 receives the network identifier transmitted from the wireless operation terminal 3, and uses the received network identifier as its own new network identifier. 1 network identifier). As a result, PANID = 0 stored in the memory is rewritten to PANID = 100 (see FIG. 15).

  After setting the desired network identifier in the wireless sensor 2-5 in this way, the user stops the operation of the wireless network specified by the fixed PANID = 9999 held by the wireless operation terminal 3 (FIG. 12: Arrow (11)).

  When the operation of the wireless network specified by the fixed PANID = 9999 held by the wireless operation terminal 3 is stopped, in response to the network presence confirmation message transmitted from the wireless sensor 2-5 (FIG. 12: arrow (12)), There is no response from the wireless operation terminal 3 (FIG. 12: arrow (13)).

  Thereby, the wireless sensor 2-5 knows that the wireless network specified by the fixed PANID = 9999 no longer exists. As a result, the wireless sensor 2-5 again receives the connection request to the wireless network specified by the first network identifier (PANID = 100) and the wireless network specified by the second network identifier (fixed PANID = 9999). The connection request to is repeated (FIG. 12: arrows (14) and (15)).

  The user installs the wireless sensor 2-5 in the connectable area of the wireless network specified by PANID = 100 held by the coordinator 1 (see FIG. 16). Then, the wireless sensor 2-5 is identified by PANID = 100 held by the coordinator 2-1 when a connection request to the wireless network identified by the first network identifier (PANID = 100) is made. (FIG. 14: arrow (16)). In this example, it is assumed that a wireless network device (router) 2-4 has joined the wireless network as a child device (see FIG. 17).

  Since the wireless sensor 2-5 is connected to the wireless network specified by its own network identifier (PANID = 100), the operation mode is changed from the sleep mode to the active mode at a fixed cycle thereafter. Mode).

  In this example, the case where a network identifier is set from the wireless operation terminal 3 to the wireless sensor 2-5 has been described as an example. However, device information such as a communication address and a transmission cycle can also be set in the same manner. In this case, when the wireless sensor 2-5 is connected to a wireless network held by the wireless operation terminal 3, the wireless sensor 2-5 is in a state where reception is always possible. There is no need to provide a manual setting means or a switching means such as a switch for forcibly entering the active mode, thereby reducing the cost.

  FIG. 18 shows a functional block diagram of the wireless sensor 2-5. In addition to the configuration of the wireless communication device 2 illustrated in FIG. 10, the wireless sensor 2-5 includes a fixed cycle active mode transition unit 2E that shifts the operation mode of the wireless sensor 2-5 from the sleep mode to the active mode at a fixed cycle. And an active mode maintaining unit 2F that maintains the operation mode of the wireless sensor 2-5 in the active mode.

  In the wireless sensor 2-5, when the first wireless network connection unit 2B1 succeeds in connection with the wireless network specified by the first network identifier, the first wireless network connection unit 2B1 sends a command to the periodic active mode transition unit 2E, The operation mode of the sensor 2-5 is defined as a fixed period active mode (normal mode). In addition, when the second wireless network connection unit 2B2 succeeds in connection with the wireless network specified by the second network identifier, the second wireless network connection unit 2B2 sends a command to the active mode maintaining unit 2F, and sets the operation mode of the wireless sensor 2-5. Keep in active mode.

  The wireless communication system of the present invention can be used in various fields such as a medium-scale and large-scale monitoring control system having a mesh structure in which a communication trunk line is wireless. Specifically, it can be applied to a room air conditioning system by VAV (variable air volume adjustment).

  DESCRIPTION OF SYMBOLS 1 ... Coordinator, 2 (2-1 to 2-5) ... Wireless communication equipment (router, wireless sensor), 3 ... Wireless operation terminal, G1 ... List of wireless communication equipment, G2 ... Network identifier input part, 2A ... Network Identifier storage unit, 2B ... wireless network connection unit, 2B1 ... first wireless network connection unit, 2B2 ... second wireless network connection unit, 2C ... network existence confirmation unit, 2D ... network identifier update unit, 2E ... fixed period active Mode transition unit, 2F ... Active mode maintaining unit, 3A ... Unique network identifier storage unit, 3B ... Wireless network management unit, 3C ... Node information acquisition unit, 3D ... Node information display unit, 3E ... Network identifier input unit display unit, 3F: Network identifier transmitter.

Claims (6)

A wireless network identified by the network identifier, a wireless communication device connected to the wireless network identified by the same network identifier as the network identifier set to itself, and a device information setting terminal in which a unique network identifier is set A wireless communication system comprising:
The wireless communication device is:
The network identifier set to the self is the first network identifier, the same network identifier as the unique network identifier set in the device information setting terminal is the second network identifier, and the first network identifier and Network identifier storage means for storing a second network identifier;
When a connection request to the wireless network specified by the first network identifier is made and the wireless network specified by the first network identifier cannot be connected, it is specified by the second network identifier. Wireless network connection means for requesting connection to a wireless network;
During connection with the wireless network specified by the second network identifier, a desired network identifier designated by the user at the device information setting terminal sent from the device information setting terminal is received, and the received network identifier Network identifier updating means for updating the first network identifier stored in the network identifier storage means as a new network identifier set to self,
The device information setting terminal
Unique network identifier storage means for storing the unique network identifier;
An input part of a desired network identifier specified by the user;
A wireless communication system comprising: a network identifier transmitting means for transmitting a network identifier input from the input unit to the wireless communication device. The wireless communication system according to claim 1, wherein
The wireless network connection means includes
The connection request to the wireless network specified by the first network identifier and the connection request to the wireless network specified by the second network identifier are alternately repeated until connected to any one of the wireless networks. A wireless communication system. The wireless communication system according to claim 1 or 2,
The device information setting terminal
A wireless communication system comprising: wireless network management means for holding and stopping a wireless network specified by the second network identifier by a user operation. The wireless communication system according to claim 3, wherein
The device information setting terminal
Wireless communication device list display means for displaying a list of the wireless communication devices connected to the wireless network specified by the second network identifier held by the wireless network management means;
And a network identifier input unit display means for displaying an input unit of the network identifier for the wireless communication device when a desired wireless communication device is selected from the displayed list of wireless communication devices. system. In the radio | wireless communications system as described in any one of Claims 1-4,
The wireless communication device is:
After connection with either one of the wireless network specified by the first network identifier and the wireless network specified by the second network identifier, it is determined whether or not the connected wireless network exists A wireless communication system, comprising: a network presence confirmation unit configured to start the operation of the wireless network connection unit when the presence of a connected wireless network is no longer confirmed. In the radio | wireless communications system as described in any one of Claims 1-5,
The wireless communication device is:
A periodical active mode transition means for transitioning the operation mode from the sleep mode to the active mode at a constant period when connected to the wireless network specified by the first network identifier;
A wireless communication system, comprising: active mode maintaining means for maintaining the operation mode in an active mode state when connected to a wireless network specified by the second network identifier.

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