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Communication system, communication method, relay device, and communication program

A relay device and communication system technology, which is applied in the field of communication systems, can solve problems such as limitations and inability to apply relay processing, and achieve the effect of reducing the amount of data

Inactive Publication Date: 2016-10-26
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, depending on the length of the path, the data that can be sent in one packet is limited
In addition, the method of using the transmission history using the transmission history in the transfer process in the same network cannot be applied to the relay process between networks with different protocols.

Method used

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  • Communication system, communication method, relay device, and communication program
  • Communication system, communication method, relay device, and communication program
  • Communication system, communication method, relay device, and communication program

Examples

Experimental program
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Effect test

Embodiment Construction

[0028] figure 2 An example of the communication system of the embodiment is shown. exist figure 2 In the example of , the system includes three networks: network NE1, network NE2, and network NE3. exist figure 2 In the example, the index value of the network NE1 is A, the index value of the network NE2 is B, and the index value of the network NE3 is C. Hereinafter, an index value assigned to a network may be described as a "network index value". In addition, the network index value is set to be represented by a number of bits less than the network identifier. The protocols used in the respective networks NE1 , NE2 , and NE3 are different from each other. In the following description, the protocol α is used for routing in the network NE1, the protocol β is used for routing in the network NE2, and the protocol γ is used for routing in the network NE3. In addition, a server (information processing device) is included in the network NE1.

[0029] exist figure 2 In , a ...

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PUM

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Abstract

A communication system provided with an information processing device and a relay device. The relay device stores information that identifies a transfer destination device that is a transfer destination for packets that include data addressed to the information processing device, and relays communications between a first network and a second network, the first network including the transfer destination device. The relay device is provided with a generation unit and a transmission unit. The generation unit receives, from a transmission source in the second network, a first data packet that includes data addressed to the information processing device, and generates a device index value that is used when the relay device specifies the transmission source from among devices included in the second network. The transmission unit transmits to the transfer destination device a second packet obtained by adding the device index value and a network index value that identifies the second network to the first packet.

Description

technical field [0001] The present invention relates to communication systems. Background technique [0002] In a system including a plurality of networks, the protocols used in the networks may differ from each other. exist figure 1 The shown sensor network system includes a network including communication devices (sensor nodes) equipped with sensors, and a network including servers that process data obtained from the sensors. exist figure 1 In an example, a routing protocol for an ad hoc network is used in a sensor network, and Internet Protocol (IP: Internet Protocol) is used in a network including a server. exist figure 1 When the illustrated sensor node transmits a packet to the server, the sensor node generates a packet to be transmitted to a gateway (GW) using a routing protocol for an ad hoc network. The payload of the packet generated by the sensor node includes data to be sent to the server and information indicating that the final destination is the server. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/66H04L12/721H04L45/74
CPCH04L12/6418H04L67/12H04L45/74H04L45/04H04L12/66H04L67/565
Inventor 山本哲
Owner FUJITSU LTD