JP5622656B2 - Wireless communication system - Google Patents

Description

  The present invention relates to a wireless communication system including a plurality of terminals that exchange wireless signals.

  In a wireless communication system that performs wireless communication between wireless terminals, a certain terminal cannot directly communicate with a terminal located in a place where radio waves do not reach, and in order to communicate between those terminals, a relay device It is necessary to communicate via

  Patent Document 1 describes a method for routing a signal route from a controller to a device in a wireless communication system. This controller collects adjacent information between all devices in the system and calculates a signal route from the information. Specifically, (1) the controller transmits a first signal instructing the device to find another device in the device range. (2) The device transmits a second signal requesting a response to each device included in the first signal. (3) Each device that has received the second signal transmits the third signal as a response to the device that has transmitted the second signal. (4) The device that has received the third signal creates a list of original devices that have transmitted the third signal, and transmits the list (fourth signal) to the controller.

JP 2003-9261 A

  In the above-described wireless communication system, since it is advantageous that installation of equipment can be performed without wiring, a terminal that can be driven by a battery is often a constituent element. When this battery-driven terminal is used, there is a need to extend the life of the battery by reducing the power consumption of the battery-driven terminal and reduce the labor for battery replacement.

  In general, a terminal that is constantly supplied with power can always receive a radio signal. However, in many cases, a battery-powered terminal can receive a radio signal only at a necessary timing in order to extend the battery life. That is, the battery-powered terminal often cannot communicate even when the communication partner wants to communicate.

  However, in the wireless communication system described in Patent Document 1 described above, the battery-powered terminal (device) omits the wireless circuit and the controller IC from receiving the first signal until sending the fourth signal to the controller. It cannot be in power mode and must always be active. In particular, when the number of terminals in the system is large, it takes time to exchange the second and third signals, which shortens the battery life.

  Then, this invention is proposed in view of the above-mentioned situation, and it aims at providing the radio | wireless communications system which can reduce the battery consumption of the battery drive terminal at the time of acquiring adjacent information.

  A wireless communication system according to a first invention that solves the above-described problem is a wireless communication system in which terminals communicate with each other, and the terminals are driven by a battery and are low in power consumption that is incapable of communication. A battery-powered terminal that intermittently switches to a power mode; and a constantly-powered terminal that is driven by power supplied from outside and can always transmit and receive. The battery-driven terminal serves as a communication partner and terminal identification information that identifies itself. A simple terminal having destination terminal identification information for specifying a terminal and route information to the destination terminal specified by the destination terminal identification information is configured, and the always-powered terminal is an adjacent terminal indicating a terminal adjacent to the simple terminal. An information aggregation terminal having information and the destination terminal identification information of the simple terminal, or constituting the simple terminal, wherein the simple terminal includes the terminal identification information and the destination terminal A first communication packet including different information, the route information, and packet specifying information for specifying a communication packet is transmitted to the destination terminal, and the constant power supply terminal configured as the simple terminal transmits the first communication packet to the destination terminal. When intercepted, the terminal identification information of the simple terminal that sent the first communication packet included in the first communication packet and the packet identification included in the first communication packet to the information aggregation terminal A second communication packet including information, and the information aggregation terminal includes terminal identification information of a simple terminal that is a transmission source of the first communication packet and a terminal of the simple terminal that is a transmission source of the second communication packet The adjacency information and route information are updated based on identification information and packet specifying information included in the first communication packet.

  In the wireless communication system according to the first invention, the second invention is such that the simple terminal includes, in the first communication packet, power supply state information indicating whether the simple terminal is a battery-powered terminal or a constant power supply terminal. The simple terminal that intercepts the first communication packet transmits the second communication packet to the information aggregation terminal only when the power supply state information of the first communication packet is a battery-driven terminal.

  In the wireless communication system according to the first invention, in the third invention, the constant power supply terminal configured as the simple terminal has adjacent battery driving terminal information indicating a battery driving terminal adjacent to the terminal. When the first communication packet is intercepted, the second communication packet is only received when the battery drive terminal of the transmission source of the first communication packet is not included in the adjacent battery drive terminal information held by itself. It transmits to the said information aggregation terminal, It is characterized by the above-mentioned.

  The wireless communication system according to a third aspect of the present invention is the wireless communication system according to the fourth aspect, wherein the simplified terminal stores adjacent battery driving terminal information and valid time information indicating a battery driving terminal adjacent to the simple terminal, If the first communication packet is not received again within the time indicated by the valid time information after intercepting one communication packet, the first communication packet includes the terminal identification information included in the first communication packet and the terminal identification information included in the first communication packet. 3 communication packets are transmitted to the information aggregating terminal, and the information aggregating terminal includes terminal identification information of a simple terminal that is a transmission source of the first communication packet included in the third communication packet, and the third communication packet. The adjacent information and route information are updated based on terminal identification information of a simple terminal that is a transmission source of the packet and packet specifying information included in the first communication packet. Of the wireless communication system.

  The wireless communication system according to the first aspect of the present invention is the wireless communication system according to the fifth aspect, wherein the battery-driven terminal configured as the simplified terminal has a communication packet for a predetermined time after the communication of the first communication packet fails. The information aggregation terminal updates the neighboring information and the route information, and then transmits the updated route information to the simple terminal that has failed to communicate the first communication packet. The battery-powered terminal configured as a terminal receives the route information transmitted from the information aggregation terminal and newly sets it as route information.

  According to the present invention, when the first power transmission terminal intercepts the first communication packet transmitted from the battery-powered terminal, its terminal identification information, the terminal identification information of the battery-driven terminal, and the packet identification information are transmitted to the information aggregation terminal. The information collection terminal updates the adjacent information and the route information based on the terminal identification information of the battery-powered terminal, the terminal identification information of the constantly powered terminal, and the packet specifying information. Thereby, according to this wireless communication system, even when the adjacent information changes due to the movement of the battery-driven terminal, the battery-driven terminal can update the information without newly executing a sequence for collecting adjacent information, It is possible to reduce the battery consumption of the battery-powered terminal when acquiring the adjacent information.

It is a block diagram which shows the structural example of the radio | wireless communications system shown as one Embodiment of this invention. 1 shows a configuration example of a wireless communication system shown as an embodiment of the present invention, where (a) shows a configuration example before the battery-driven terminal (2) moves, and (b) shows a configuration example after the battery-driven terminal (2) moves. , Indicate. It is a figure which shows the information which the terminal in the radio | wireless communications system shown as one Embodiment of this invention has. It is a figure which shows the adjacent information which the radio | wireless controller in the radio | wireless communications system shown as one Embodiment of this invention has. It is a figure which shows destination terminal ID of the terminal which the radio | wireless controller in the radio | wireless communications system shown as one Embodiment of this invention has. It is a sequence diagram which shows operation | movement of each part in the radio | wireless communications system shown as 1st Embodiment of this invention. It is a sequence diagram which shows operation | movement of each part in the radio | wireless communications system shown as 3rd Embodiment of this invention. In the wireless communication system shown as the third embodiment of the present invention, (a) shows changes in adjacent battery drive terminal information held by the wireless controller (1), and (b) shows adjacent battery drive held by the constant power supply terminal (4). The change of terminal information is shown, (c) shows the change of the adjacent battery drive terminal information which a constant electric power supply terminal (5) has. It is a sequence diagram which shows operation | movement of each part in the radio | wireless communications system shown as 4th Embodiment of this invention. In the wireless communication system shown as the fourth embodiment of the present invention, (a) shows changes in adjacent battery driving terminal information held by the wireless controller (1), and (b) shows adjacent battery driving held by the constant power supply terminal (4). The change of terminal information is shown, (c) shows the change of the adjacent battery drive terminal information which a constant electric power supply terminal (5) has. It is a sequence diagram which shows operation | movement of each part in the radio | wireless communications system shown as 5th Embodiment of this invention.

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

[First Embodiment]
The wireless communication system shown as the first embodiment of the present invention is configured as shown in FIG. 1, for example. The wireless communication system includes a wireless controller 1 and a plurality of wireless terminals 2a to 2d, 3, 4, and 5.

  The wireless communication system is applied to an energy management system including a wireless sensor that detects temperature, humidity, dust, and presence / absence information installed in a factory, an office, a house, or the like, and a hygiene management system. The wireless communication system is applied to a crime prevention / disaster prevention system including a smoke detection sensor, a window glass destruction sensor, a camera, and the like. Furthermore, this wireless communication system is also applied to a lighting control system including a lighting switch, a dimming device, a lighting device, and the like.

  The wireless communication system in the present embodiment includes a wireless controller 1, a window sensor 2a, a smoke sensor 2b, a human sensor 2c, a power sensor 2d, a lighting remote controller 3, a lighting fixture 4, and a buzzer 5 as wireless terminals.

  The wireless controller 1 and the wireless terminal can perform wireless communication by operating according to a predetermined wireless communication protocol. When performing wireless communication, the wireless controller 1 can communicate with wireless terminals that exist within a predetermined wireless communication range by operating an internal wireless communication I / F. Further, when performing wireless communication, the wireless terminal can communicate with the wireless controller 1 or another wireless terminal existing within a predetermined wireless communication range by operating an internal wireless communication I / F.

  In this wireless communication system, a window sensor 2a, a smoke sensor 2b, a human sensor 2c, a power sensor 2d, and a lighting fixture 4 are arranged so as to be able to communicate with the wireless controller 1 wirelessly. The lighting remote controller 3 can communicate with the lighting fixture 4 through the power sensor 2d. The buzzer 5 can communicate with the wireless controller 1 via the human sensor 2c.

  In this wireless communication system, for example, when the lighting remote controller 3 is operated by a user, the lighting remote controller 3 and the lighting fixture 4 perform wireless communication via the power sensor 2d to turn on or off the lighting fixture 4. The power sensor 2 d that measures the amount of power used in an arbitrary system supplies the measured power information to the wireless controller 1. The wireless controller 1 can perform monitoring and control based on the amount of power used in an arbitrary system based on the power information. Thereby, the wireless communication system functions as an illumination control system.

  In addition, the wireless communication system is set so that the wireless controller 1 is in a warning state by wireless communication with respect to the window sensor 2a. In this state, when an intrusion alarm indicating that the window has been opened from the window sensor 2a is wirelessly communicated from the window sensor 2a to the wireless controller 1, the wireless controller 1 uses the buzzer 5 by wireless communication via the human sensor 2c. To activate the alarm. In the wireless communication system, the wireless controller 1 sets the human sensor 2c to be in a warning state by wireless communication. When the human sensor 2c detects the presence of a person, the wireless controller 1 detects the human sensor 2c. The buzzer 5 is operated via Thereby, the wireless communication system functions as a crime prevention system.

  Furthermore, in this wireless communication system, when smoke detection information is supplied from the smoke sensor 2b to the wireless controller 1 by wireless communication, the wireless controller 1 causes the buzzer 5 to perform an alarm operation by wireless communication via the human sensor 2c. Thereby, a radio | wireless communications system functions as a disaster prevention system.

  In such a wireless communication system, a battery terminal including a plurality of wireless terminals includes a battery-driven terminal and a constant power supply terminal. The battery-powered terminal is driven by a battery and operates to intermittently switch to a low-power mode with low power consumption in which wireless signals cannot be communicated. The constant power supply terminal is driven by power supplied from the outside, and can always transmit and receive radio signals.

  The wireless communication system is divided into a simple terminal that relays wireless signals and performs application operations itself, and an information aggregation terminal that aggregates information of the entire system. The simple terminal includes terminal identification information that identifies itself, destination terminal identification information that identifies a terminal that is a communication partner, and route information to a destination terminal that is identified by the destination terminal identification information. On the other hand, the information aggregation terminal has adjacent information indicating a terminal adjacent to the simple terminal and destination terminal identification information of the simple terminal.

  In this wireless communication system, the battery-powered terminal is configured only as a simple terminal. On the other hand, the constant power supply terminal is configured as an information aggregation terminal or a simple terminal.

  In the present embodiment, the wireless controller 1 is a constant power supply terminal and functions as an information aggregation terminal. It is assumed that wireless terminals other than the wireless controller 1 function as simple terminals.

  Specifically, it is configured as shown in FIG. The wireless controller (1) has an ID (terminal identification information) of “1”. The battery-driven terminal (2) has an ID “2”. The battery-driven terminal (3) has an ID “3”. The constant power supply terminal (4) has an ID “4”. The constant power supply terminal (5) has an ID of “5”. The application destination terminal (6) has an ID “6” and is an application destination of the battery-powered terminal (2).

  In this case, “6” is stored as the destination terminal ID (destination terminal identification information) of the application in the battery-driven terminal (2) configured as a simple terminal. Corresponding to the destination terminal ID, “2-1-6” indicating a route for relaying communication packets in the order of “2”, “1”, and “6” is stored. Similarly, “2-4-6” and “2-4-5-6” are stored in correspondence with the destination terminal ID “6”.

  The battery-driven terminal (2) configured as a simple terminal stores the ID “1” of the wireless controller (1) as the destination terminal ID. Corresponding to this destination terminal ID, “2-1”, “2-4-1”, and “2-4-6-1” are stored as route information.

  Further, the wireless controller (1) as an information aggregation terminal stores adjacent information as shown in FIG. 4 and a destination terminal ID of a simple terminal as shown in FIG. The adjacent information in FIG. 4 is, for example, “x” in which the battery-powered terminal (2) is adjacent to the wireless controller (1) and the constant power supply terminal (4) and is not adjacent to other terminals. Is shown. The destination terminal ID of the simple terminal in FIG. 5 indicates that, for example, the ID of the application destination terminal of the battery-powered terminal (2) is “6” of the application destination terminal (6).

  In such a wireless communication system, for example, the battery-driven terminal (2) moves from the state shown in FIG. 2 (a) and can communicate with only the power supply terminal (5) at all times as shown in FIG. 2 (b). The operation when the state is reached will be described with reference to FIG.

  The battery drive terminal (2) moves, and the battery drive terminal (2) transmits the application communication packet S1 to the application destination terminal (6). This application communication packet S1 corresponds to a first communication packet.

  This application communication packet S1 includes “2” as source information, “6” as a destination terminal ID, “2-4-6” as route information, and “1” as an application sequence number. The application communication packet S1 also includes application data. Here, the transmission source information is its own terminal identification information, the destination terminal ID is destination terminal identification information, and the application sequence number is packet identification information. The application sequence number does not change while notifying a certain event even if the route is changed.

  Since the battery-driven terminal (2) moves and cannot communicate with the constant power supply terminal (4), the application communication packet S1 is not received by the constant power supply terminal (4). However, since the battery-driven terminal (2) moves and can communicate with the constant power supply terminal (5), the constant power supply terminal (5) receives the application communication packet S1. In this wireless communication system, all the constantly powered terminals that have received the application communication packet notify the wireless controller (1) that the packet has been received.

  When receiving the application communication packet S1, the constant power supply terminal (5) transfers the application communication packet S1 according to the route information if it is included in the relay node. On the other hand, regardless of whether it is included in the relay node or whether it is included in the relay node, the constant power supply terminal (5) has intercepted the application communication packet S1, and has received the intercept neighbor information (the first 2 communication packet) S2 is notified to the wireless controller (1). In this interception adjacent information S2, the own terminal ID “5” as the transmission source information, the ID “1” of the wireless controller (1) as the destination terminal ID, and the wireless controller ( The route “5-4-1” to 1) is stored. Further, the interception adjacent information S2 stores “2” of the transmission source ID and “1” of the application sequence number stored in the intercepted application communication packet.

  This interception adjacent information S2 is relayed by the constant power supply terminal (4) and received by the wireless controller (1) as the interception adjacent information S3. The wireless controller (1) updates its own adjacent information, assuming that the battery-driven terminal (2) with the transmission source ID of the application communication and the constant power supply terminal (5) with the transmission source ID of the interception adjacent information S3 are adjacent to each other. To do. Further, the wireless controller (1) assumes that the terminal that did not notify the interception adjacent information S2 storing the same application sequence number and the battery-driven terminal (2) of the source ID of the application communication are not adjacent to each other. Update information. Specifically, in the wireless controller (1), the wireless controller (1), the battery drive terminal (3), the constant power supply terminal (4), the application destination terminal (6), and the battery drive terminal (2) are adjacent to each other. Neighbor information is updated as it is not.

  Thereafter, the battery-powered terminal (2) requests the wireless controller (1) to update the route information by some means.

  In order to communicate with the application destination terminal (6) according to the current neighbor information, the wireless controller (1) is routed “2-5-6”, and in order to communicate with the wireless controller (1), “2- The route information update notification S5 using the route of “5-4-1” is output. Upon receiving the route information update notification S5, the battery drive terminal (2) updates its route information and returns a confirmation response S6 to the wireless controller (1).

  Thereafter, when the battery-driven terminal (2) transmits the application communication packet S7 to the application destination terminal (6), the path information is set to “2-5-6”. Thereby, the constant power supply terminal (5) can transmit the application communication packet S7 as the application communication packet S8 to the application destination terminal (6). The confirmation response S9 transmitted from the application destination terminal (6) to the wireless controller (1) is also transmitted to the battery drive terminal (2) as the confirmation response S10 via the constant power supply terminal (5).

  As described above, according to this wireless communication system, when the power feeding terminal constantly receives the communication packet transmitted by the battery-powered terminal, the interception adjacent information is transmitted to the wireless controller (1). Thereby, the radio | wireless controller (1) can update adjacency information and route information using interception adjacency information.

  As described above, in the wireless communication system, when the wireless signal is relayed and transmitted to the target terminal, even if the adjacent information changes due to the movement of the battery-driven terminal, the communication of the battery-driven terminal in which the power supply terminal has moved constantly. Is intercepted and the intercepted content is sent to the information aggregation terminal. Thereby, information can be updated without newly executing a sequence for collecting adjacent information, and battery consumption of the battery-driven terminal when acquiring adjacent information can be reduced.

  That is, according to this wireless communication system, the adjacent information of the wireless controller (1) and the route information of the battery-driven terminal can be updated only by the communication of the constantly powered terminal based on the application communication intercepted by the constantly powered terminal. Thereby, the battery consumption by communication in a battery drive terminal does not generate | occur | produce.

  Further, according to this wireless communication system, when the communication amount for protocol information for updating adjacent information increases, the application communication packet is inhibited, but this can be suppressed.

[Second Embodiment]
Next, a radio communication system according to the second embodiment will be described. In addition, about the part similar to the above-mentioned 1st Embodiment, the detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  In the wireless communication system shown as the second embodiment, the simple terminal includes, in the first communication packet, power supply state information indicating whether the simple terminal is a battery-driven terminal or a constant power supply terminal. Moreover, the simple terminal which intercepted the 1st communication packet transmits a 2nd communication packet to an information aggregation terminal, only when the electric power feeding state information of a 1st communication packet is a battery drive terminal.

  Specifically, the simple terminal that transmits the application communication packet adds information indicating whether it is a battery-powered terminal or a constant power supply terminal to the application communication packet. And the simple terminal which received the said application communication packet transmits interception adjacent information to a radio | wireless controller (1), when the simple terminal of a transmission origin is a battery drive terminal.

  In the sequence example in the first embodiment described above, in FIG. 6, the battery-driven terminal (2) stores information indicating that it is a battery-driven terminal in the application communication packet S1. When the constant power supply terminal (5) receives the application communication packet S1, the battery-driven terminal (2) is a battery-driven terminal, and therefore transmits interception adjacent information to the wireless controller (1). On the other hand, even if the constant power supply terminal (5) receives the application communication packet from the constant power supply terminal (4), the constant power supply terminal (4) of the transmission source is the constant power supply terminal, so that the wireless controller (1) Intercept neighbor information is not sent.

  As described above in detail, according to the wireless communication system according to the second embodiment to which the present invention is applied, even if an application communication packet of a constantly powered terminal that is assumed not to move is intercepted, Do not send to the information aggregation terminal. Thereby, the traffic of the whole system can be reduced and the power consumption as the whole system can be reduced.

[Third Embodiment]
Next, a radio communication system according to the third embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the wireless communication system according to the third embodiment, a constant power supply terminal configured as a simple terminal has adjacent battery drive terminal information indicating a battery drive terminal adjacent to itself. When the constantly powered terminal configured as a simple terminal intercepts the first communication packet (application communication packet), the adjacent battery-driven terminal information held by the battery-driven terminal that is the transmission source of the first communication packet To determine if it is included. The constant power supply terminal transmits the second communication packet (intercepting adjacent information) to the information aggregation terminal only when the ID of the transmission source stored in the received first communication packet is not included in the adjacent battery driving terminal information.

  Such a wireless communication system operates as shown in FIG. 7 when the battery-driven terminal (2) moves as shown in FIG. Even if the battery drive terminal (2) transmits the application communication packet S11 to the application destination terminal (6), it does not reach the application destination terminal (6) due to movement. However, the application communication packet S11 is intercepted by the constant power supply terminal (5).

  When the constant power supply terminal (5) receives the application communication packet S11, the constant power supply terminal (5) refers to the adjacent battery drive terminal information held by itself. The constant power supply terminal (5) compares the ID included in the adjacent battery drive terminal information with the transmission source ID stored in the application communication packet S11. Since the ID of the battery drive terminal (2) is not stored in the adjacent battery drive terminal information of the constant power supply terminal (5), the constant power supply terminal (5) is driven by the adjacent battery as shown in FIG. The ID of the battery-powered terminal (2) is added to the terminal information. The constant power supply terminal does nothing if it is an application communication packet from the same transmission source ID as the ID stored in its adjacent battery drive terminal information.

  Moreover, since the battery-powered terminal (2) has changed from the non-adjacent terminal to the adjacent terminal, the constant power supply terminal (5) notifies the wireless controller (1) of the interception adjacent information S12. The interception adjacent information S12 includes its own terminal ID “5” as the source information, the wireless controller (1) ID “1” as the destination terminal ID, and the wireless controller ( The route “5-4-1” to 1) is stored. Further, the interception adjacent information S12 stores “2” of the transmission source ID and “1” of the application sequence number stored in the intercepted application communication packet. The interception adjacent information S12 is relayed by the constant power supply terminal (4) and is received by the wireless controller (1) as the interception adjacent information S13.

  The wireless controller (1) receives the interception adjacent information S13. Since the wireless controller (1) has not received the packet S11 with the application sequence number “1” from the battery drive terminal (2), the adjacent battery drive stored in itself as shown in FIG. The ID “2” of the battery-powered terminal (2) stored in the terminal information is deleted. Then, the wireless controller (1) transmits the adjacent information update notification S14 to the constant power supply terminal (4) adjacent to the battery drive terminal (2) before the battery drive terminal (2) moves.

The adjacent information update notification S14 is notified of the change contents of “adjacent” / “non-adjacent”, the ID of the battery-driven terminal to be changed, and the application sequence number that is the source of the change. Specifically, in the adjacent information update notification S14, the transmission source ID “1”, the destination ID “4”, the route information “1-4”, the update target terminal ID “2”, the adjacent / Non-adjacent information “non-adjacent” and application sequence number “1” are stored.

  Upon receiving the adjacent information update notification S14, the constant power supply terminal (4) confirms the notified battery-driven terminal ID and the received application sequence number, and confirms that there is no packet corresponding to the application communication packet intercepted by itself. To do. Since the constant power supply terminal (4) has not received the application communication packet, it accepts the update. As a result, the constant power supply terminal (4) updates the battery drive terminal (2) to non-adjacent among its own adjacent battery drive terminal information as shown in FIG. 8 (b). Then, the constant power supply terminal (4) transmits an update acceptance notification S15 to the wireless controller (1). If the corresponding application communication packet has been intercepted, the wireless controller (1) is notified of a rejection notification that does not update the adjacent battery drive terminal information.

  For the subsequent operation of updating the route information of the battery-driven terminal (2) and the application communication of the battery-driven terminal (2), the messages S17 to S22 are transmitted and received in the same manner as the messages S5 to S10 of FIG.

  As described above in detail, according to the wireless communication system according to the third embodiment to which the present invention is applied, communication for updating adjacent information is generated only when the system configuration needs to be updated. The communication load in can be reduced.

[Fourth Embodiment]
Next, a radio communication system according to the fourth embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the wireless communication system as the fourth embodiment, the simple terminal stores the valid time information in addition to the adjacent battery driving terminal information indicating the battery driving terminal adjacent to itself. The constant power supply terminal configured as this simple terminal receives the first communication packet (application communication packet) again within the time indicated by the valid time information after intercepting the first communication packet. Sent to the information aggregation terminal. The third communication packet includes its own terminal identification information and terminal identification information included in the first communication packet. The information aggregation terminal includes terminal identification information of the simple terminal that is the transmission source of the first communication packet included in the third communication packet, terminal identification information of the simple terminal that is the transmission source of the third communication packet, and the first communication The adjacency information and the route information are updated based on the packet specifying information included in the packet.

  The operation in such a wireless communication system is as shown in FIG.

  The battery-driven terminal (2) transmits the application communication packet S31 to the application destination terminal (6) before moving as shown in FIG. In this application communication packet S31, the transmission source ID “2”, the destination terminal ID “6”, the route information “2-4-6”, and the expiration date information “60 minutes” are stored. This application communication packet S31 is received by the constant power supply terminal (4) and the wireless controller (1).

  When the constant power supply terminal (4) receives the application communication packet S31, it stores that the battery drive terminal (2) is adjacent to the adjacent battery drive terminal information as shown in the upper part of FIG. 10 (b). Further, the constant power supply terminal (4) stores “60 minutes” of the expiration date information in association with the adjacent battery drive terminal information, and starts monitoring whether 60 minutes have elapsed by the timer. The constant power supply terminal (4) transfers the application communication packet S32 to the application destination terminal (6) according to the route information.

  The wireless controller (1) intercepts the application communication packet S31 transmitted from the battery drive terminal (2). Similarly to the constant power supply terminal (4), the wireless controller (1) indicates that the battery drive terminal (2) is adjacent and the expiration date information “60 minutes” as shown in the upper part of FIG. Store and start monitoring whether 60 minutes have passed by the timer.

  Thereafter, the battery-powered terminal (2) moves as shown in FIG. 2 (b) and transmits the application communication packet S33. Then, the application communication packet S33 is not received by the constantly powered terminal (4) but is received only by the constantly powered terminal (5). The application communication packet S33 has the same contents as the application communication packet S31.

  When the constantly-powered terminal (5) receives the application communication packet S33, the battery-driven terminal (2) changes from non-adjacent to adjacent, and therefore updates the adjacent battery-driven terminal information as shown in FIG. In addition, the constant power supply terminal (5) transmits the adjacent information update notification S34 to the wireless controller (1). In this adjacent information update notification S34, the source ID “5”, the destination terminal ID “1”, the route information “5-4-1”, the update target terminal ID “2”, adjacent / non-adjacent “Adjacent” as information is stored. This adjacent information update notification S34 is transferred from the constantly powered terminal (4) to the wireless controller (1) according to the route information.

  When the wireless controller (1) receives the adjacent information update notification S34, the wireless controller (1) updates the adjacent information so that the battery-powered terminal (2) and the constant power supply terminal (5) are adjacent.

  Further, when the constant power supply terminal (4) determines that the effective time of the battery drive terminal (2) being adjacent has passed, the battery drive terminal (2) is adjacent as shown in FIG. 10 (b). Is deleted from the adjacent battery drive terminal information. Then, the constant power supply terminal (4) transmits an adjacent information update notification S35 indicating that the adjacent battery drive terminal information has been updated to the wireless controller (1). In this adjacent information update notification S35, the transmission source ID “4”, the destination terminal ID “1”, the route information “4-1”, the update target terminal ID “2”, and the adjacent / non-adjacent information "Non-adjacent" is stored. This adjacent information update notification S35 corresponds to a third communication packet.

  The wireless controller (1) receives the adjacent information update notification S35 and updates the adjacent information so that the battery-powered terminal (2) and the constant power supply terminal (4) are not adjacent to each other. In addition, the wireless controller (1), as shown in FIG. 10 (a), and the battery-driven terminal (2) are connected to the battery-driven terminal (2). Is not adjacent, the adjacent battery drive terminal information is updated.

  For the subsequent operation of updating the route information of the battery-driven terminal (2) and the application communication of the battery-driven terminal (2), messages S37 to S41 are transmitted and received in the same manner as the messages S5 to 10 of FIG.

  As described above in detail, according to the wireless communication system according to the fourth embodiment to which the present invention is applied, when a simple terminal transmits valid time information and does not receive a communication packet again within the valid time, Information update notification is performed. Thereby, the wireless controller (1) can update the adjacent information based on the information of the terminal that has lost communication.

  Further, according to this wireless communication system, the adjacent information update notification S14 from the wireless controller (1) to the constantly powered terminal and the update acceptance notification S15 from the constantly powered terminal to the wireless controller (1) or rejection in the third embodiment. Notification is not required. Thereby, according to this radio | wireless communications system, the communication load in a system can be reduced.

[Fifth Embodiment]
Next, a radio communication system according to the fifth embodiment will be described. Note that parts similar to those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The wireless communication system shown as the fifth embodiment enables a battery-powered terminal configured as a simple terminal to receive a communication packet for a predetermined time after the communication of the first communication packet (application communication packet) fails. After updating the adjacent information and the route information, the information aggregation terminal transmits the updated route information to the simple terminal that has failed to communicate the first communication packet. This updated route information is received by the battery-powered terminal. The battery-driven terminal configured as a simple terminal is newly set as route information.

  The operation in such a wireless communication system is as shown in FIG.

  The battery-driven terminal (2) transmits the application communication packet S51 to the application destination terminal (6) before moving as shown in FIG. In this application communication packet S51, the source ID “2”, the destination terminal ID “6”, the route information “2-4-6”, and the expiration date information “60 minutes” are stored. This application communication packet S51 is received by the constant power supply terminal (4) and the wireless controller (1).

  When receiving the application communication packet S51, the constant power supply terminal (4) stores that the battery drive terminal (2) is adjacent to the adjacent battery drive terminal information as shown in the upper part of FIG. 10 (b). In addition, the constant power supply terminal (4) stores “60 minutes” of the expiration date information in association with the adjacent battery drive terminal information. The constant power supply terminal (4) transfers the application communication packet S32 to the application destination terminal (6) according to the route information.

  The wireless controller (1) intercepts the application communication packet S51 transmitted from the battery drive terminal (2). Similarly to the constant power supply terminal (4), the wireless controller (1) indicates that the battery drive terminal (2) is adjacent and the expiration date information “60 minutes” as shown in the upper part of FIG. Remember.

  Thereafter, the battery-powered terminal (2) moves as shown in FIG. 2 (b) and transmits the application communication packet S53. Then, the application communication packet S53 is not received by the constantly powered terminal (4) but is received only by the constantly powered terminal (5). This application communication packet S53 has the same contents as the application communication packet S51.

  Thus, even after the battery-driven terminal (2) fails to transmit the application communication packet S53, it does not immediately receive the communication packet, but receives the communication packet for a predetermined time after the failure. Make it possible. This predetermined period is a preset time, which is longer than the time until the route information update notification S57 is transmitted from the wireless controller (1) as a result of reception of the application communication packet by any terminal. It is desirable to set.

  When the constantly-powered terminal (5) receives the application communication packet S53, the battery-driven terminal (2) changes from non-adjacent to adjacent, and therefore updates the adjacent battery-driven terminal information as shown in FIG. 10 (c). Further, the constant power supply terminal (5) transmits the adjacent information update notification S54 to the wireless controller (1). In this adjacent information update notification S54, the source ID “5”, the destination terminal ID “1”, the route information “5-4-1”, the update target terminal ID “2”, adjacent / non-adjacent “Adjacent” as information is stored. This adjacent information update notification S54 is transferred from the constant power supply terminal (4) to the wireless controller (1) according to the route information.

  When the wireless controller (1) receives the adjacent information update notification S54, the wireless controller (1) updates the adjacent information so that the battery-powered terminal (2) and the constant power supply terminal (5) are adjacent.

  Further, when the constant power supply terminal (4) determines that the effective time of the battery drive terminal (2) being adjacent has passed, the battery drive terminal (2) is adjacent as shown in FIG. 10 (b). Is deleted from the adjacent battery drive terminal information. Then, the constant power supply terminal (4) transmits an adjacent information update notification S55 indicating that the adjacent battery drive terminal information has been updated to the wireless controller (1). In this adjacent information update notification S55, the transmission source ID “4”, the destination terminal ID “1”, the route information “4-1”, the update target terminal ID “2”, and the adjacent / non-adjacent information "Non-adjacent" is stored. This adjacent information update notification S55 corresponds to a third communication packet.

  The wireless controller (1) receives the adjacent information update notification S55 and updates the adjacent information so that the battery-powered terminal (2) and the constant power supply terminal (4) are not adjacent to each other. In addition, the wireless controller (1), as shown in FIG. 10 (a), and the battery-driven terminal (2) are connected to the battery-driven terminal (2). Is not adjacent, the adjacent battery drive terminal information is updated.

  Here, after updating the adjacent battery drive terminal information and the route information, the wireless controller (1) sends an updated route information update notification S57 to the battery drive terminal (2) that failed to communicate in the application communication packet S53. Send. The updated route information is received by the battery-driven terminal (2) because the battery-driven terminal (2) can receive the communication packet even after transmitting the application communication packet S53. When the battery drive terminal (2) receives the route information update notification S57, the battery drive terminal (2) updates its own route information and returns a confirmation response S58 to the wireless controller (1).

  Thereafter, when the battery-driven terminal (2) transmits the application communication packet S59 to the application destination terminal (6), the path information is set to “2-5-6”. Thereby, the constant power supply terminal (5) can transmit the application communication packet S59 as the application communication packet S60 to the application destination terminal (6). Further, the confirmation response S61 transmitted from the application destination terminal (6) to the wireless controller (1) is also transmitted to the battery drive terminal (2) as the confirmation response S62 via the constant power supply terminal (5).

  As described above in detail, according to the wireless communication system according to the fifth embodiment to which the present invention is applied, it is not necessary to make a route information update request from the battery-driven terminal to the wireless controller (1). Updates to the terminal can be done automatically. Further, according to this wireless communication system, it is possible to save the user's trouble and to suppress an increase in cost for a mechanism for receiving a response from each terminal to the broadcast.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made depending on the design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it is possible to change.

DESCRIPTION OF SYMBOLS 1 Wireless controller 2a Window sensor 2a-2d Wireless terminal 2b Smoke sensor 2c Human sensor 2d Electric power sensor 3 Lighting remote control 4 Lighting fixture 5 Buzzer

Claims (5)

A wireless communication system in which terminals communicate with each other,
The terminal group is driven by a battery, includes a battery-driven terminal that is intermittently switched to a low-power mode with low power consumption that cannot be communicated, and a constantly-powered terminal that is driven and fed from the outside and can always transmit and receive,
The battery-powered terminal is a simple terminal having terminal identification information for identifying itself, destination terminal identification information for identifying a terminal serving as a communication partner, and route information to the destination terminal identified by the destination terminal identification information. Configure
The constant power supply terminal constitutes an information aggregation terminal having adjacent information indicating a terminal adjacent to the simple terminal and the destination terminal identification information of the simple terminal, or the simple terminal,
The simple terminal transmits a first communication packet including the terminal identification information, the destination terminal identification information, the route information, and packet specifying information for specifying a communication packet to the destination terminal,
The constant power supply terminal configured as the simple terminal, when intercepting the first communication packet, sends the terminal identification information and the first communication packet included in the first communication packet to the information aggregation terminal Transmitting a second communication packet including terminal identification information of a simple terminal and packet specifying information included in the first communication packet;
The information aggregation terminal is included in terminal identification information of a simple terminal that is a transmission source of the first communication packet, terminal identification information of a simple terminal that is a transmission source of the second communication packet, and the first communication packet. The adjacency information and the route information are updated based on the packet identification information that has been stored. The simple terminal includes, in the first communication packet, power supply state information indicating whether the simple terminal is a battery-powered terminal or a constant power supply terminal,
The simplified terminal that intercepts the first communication packet transmits the second communication packet to the information aggregation terminal only when the power supply state information of the first communication packet is a battery-powered terminal. Item 2. The wireless communication system according to Item 1.   The constant power supply terminal configured as the simple terminal has adjacent battery drive terminal information indicating a battery drive terminal adjacent to itself, and transmits the first communication packet when the first communication packet is intercepted. The wireless communication according to claim 1, wherein the second communication packet is transmitted to the information aggregation terminal only when the original battery driving terminal does not include the adjacent battery driving terminal information held by the original battery driving terminal. Communications system. The simplified terminal stores neighboring battery driving terminal information and valid time information indicating a battery driving terminal adjacent to the simple terminal, and after the first communication packet is intercepted, the simple terminal is again updated within the time indicated by the valid time information. If one communication packet is not received, a third communication packet including its own terminal identification information and terminal identification information included in the first communication packet is transmitted to the information aggregation terminal,
The information aggregation terminal includes terminal identification information of a simple terminal that is a transmission source of the first communication packet included in the third communication packet, and terminal identification information of a simple terminal that is a transmission source of the third communication packet; The wireless communication system according to claim 3, wherein the adjacency information and route information are updated based on packet specifying information included in the first communication packet. The battery-powered terminal configured as the simple terminal is capable of receiving a communication packet for a predetermined time after the communication of the first communication packet fails,
The information aggregation terminal transmits the updated route information to a simple terminal that has failed to communicate the first communication packet after updating the adjacent information and the route information.
The wireless communication system according to claim 1, wherein the battery-driven terminal configured as the simple terminal receives the route information transmitted from the information aggregation terminal and newly sets the route information.

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