Terminal, route generation method, and route generation program
A technology of terminal and generation unit, which is applied in the direction of data exchange through path configuration, data exchange network, wireless communication, etc., which can solve the problem of memory limit and achieve the effect of suppressing the increase of load
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Embodiment 1
[0030] [overall composition]
[0031] figure 1 It is a diagram showing an example of the overall configuration of the system according to the first embodiment. like figure 1 As shown, this system has: terminal A to terminal G, gateway (GateWay) 5, and server 7. The numbers of terminals, servers, and gateways shown here are just examples, and are not limited thereto. In this embodiment, an example of configuring a network using wireless is described, but a wired configuration is also possible.
[0032] figure 1 The shown system is a monitoring system that monitors electricity used in a home via a network. Each terminal monitors sensor values from sensors such as electric meters at predetermined intervals, and transmits the monitored data to GW5 of the server 7 . The server 7 is a management server that collects and manages monitoring data from each terminal.
[0033] In addition, in this system, each terminal and GW5 constitute a network through ad hoc communication...
Embodiment 2
[0095] In Embodiment 1, as examples where the downlink protection flag becomes effective, the case of changing the GW to terminate the ad hoc network, the case of setting the terminal 10 as a power sensor, etc. for the first time communication, and the terminal 10 returning to power from a power failure were exemplified. After the initial communication situation. Here, as an example, an example of changing the GW to terminate the ad hoc network will be specifically described.
[0096] Figure 8 It is a figure explaining the example of changing GW. like Figure 8 As shown, the system has: terminals A to F, GW (A), GW (B), and server 7 . Since each terminal communicates stably by sending and receiving HELLO frames to and from adjacent terminals, it is possible to monitor the communication quality up to each GW connected to the server, and to change the connected GW according to the quality of the path.
[0097] Here, terminal A holds a path (A) for uplink communication via t...
Embodiment 3
[0104] The embodiments of the present invention have been described so far, but the present invention can be implemented in various forms other than the above-described embodiments. Therefore, different embodiments will be described below.
[0105] (omen)
[0106] The example of enabling the downlink protection flag described in the embodiment is an example of heralding the occurrence of downlink communication based on the uplink communication, and is not limited to the content described in the embodiment. For example, it can also be applied to a case where a terminal requests a response from a server. As an example, when the terminal requests an ACK to confirm whether important data is normally received by the server, the downlink protection flag may be enabled at the time of data transmission. In addition, when the terminal requests the server to respond to failures from the server, the downlink protection flag may be enabled when transmitting data reporting failure detect...
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