WO2016111399A1

WO2016111399A1 - Information transmission terminal and method therefor

Info

Publication number: WO2016111399A1
Application number: PCT/KR2015/000262
Authority: WO
Inventors: 양성열; 강승엽; 박유경; 윤석문; 최종민
Original assignee: 두산중공업 주식회사
Priority date: 2015-01-09
Filing date: 2015-01-09
Publication date: 2016-07-14

Abstract

An information transmission terminal according to the present invention comprises: an upper level node communication unit for communicating with an upper level node; a lower level node communication unit for communicating with a lower level node; a signal processing unit, connected to the upper level node communication unit and the lower level node communication unit, for processing a signal; and a storage unit which stores advertisement information transmitted from the signal processing unit and provides the stored advertisement information upon a request of the signal processing unit, wherein information of the upper level node is temporarily stored in the information transmission terminal so that when the lower level node requests the information of the upper level node, the information of the upper level node that is temporarily stored in the information transmission terminal can be directly transmitted to the lower level node without a request to the upper level node.

Description

Information delivery terminal and method

The present invention relates to an information transmitting terminal and a method, and more particularly, to temporarily store information of an upper node in an information transmitting terminal so that the upper node temporarily stored in the information transmitting terminal without a request to the upper node when requesting information of the upper node from the lower node. It relates to a terminal and a method for directly passing the information of the sub-node.

With increasing interest in industrial wireless communications, various technologies are emerging. In particular, the emergence of industrial wireless communication has brought many advantages in terms of ease of maintenance and cost reduction compared to the conventional wired communication.

These technologies are attracting attention as the Wireless Addressable Remote Transducer (HART) and ISA100.11a technologies. WirelessHART is a sensor networking technology, and ISA100.11a is an industrial automation wireless communication technology. These technologies are highly reliable and easily matched to wired products due to their diverse network and scalability advantages.

In particular, WirelessHART is a communication protocol that checks the channel status between a transmitter and a receiver before sending a signal to a receiver in order to secure reliability of message exchange occurring in the control process. There is an advantage to working.

However, WirelessHART has the disadvantage of causing a waste of time slots when the channel between the transmitter and the receiver is not good, and as the number of wireless communication systems increases, a new control system is required to register a tree network due to the nature of a tree. There is a disadvantage that the time required is long.

Therefore, while ensuring the reliability of the message exchange in the wireless communication system, it is necessary to minimize the waste of resources, and research is required to reduce the time required to register a new wireless communication system.

On the other hand, Korean Patent Publication No. 2010-0114692 checks the channel state between the transmitting end and the receiving end before the transmitting end transmits a signal to the receiving end, and if the channel state is not good, an alternative between the transmitting end and the receiving end (alternative) The present invention provides a signal transmission device and a method of transmitting a control signal of a signal transmission device that can transmit a signal to a receiving end through a possible channel, thereby ensuring reliability of message exchange and preventing waste of time resources.

However, even in such a case, the problem of delay time required for registration of a new wireless communication system due to the tree shape has not been solved.

The present invention has been made to solve the above problems, and temporarily stores the information of the upper node in the information transmitting terminal, the upper node temporarily stored in the information transmitting terminal without request to the upper node when the lower node requests information of the upper node. An object of the present invention is to provide a device that can directly transfer information of a node to a lower node.

In addition, an object of the present invention is to provide advertisement information, which is essential information required when accessing from a lower node to an upper node, and light key information, which is a response to an access permission request, directly from an information transmitting terminal.

In order to solve the above-mentioned problems, the information transmission terminal according to the present invention is connected to the upper node communication unit for communicating with the upper node, the lower node communication unit for communicating with the lower node, the upper node communication unit and the lower node communication signal for signal processing The processor includes a storage unit for storing advertisement information transmitted from the signal processor and providing the stored advertisement information when requested by the signal processor.

Here, the signal processing unit transmits the information of the upper node communication unit to the lower node communication unit, transmits the information of the lower node communication unit to the upper node communication unit, receives the advertisement information transmitted from the upper node communication unit and stores it in the storage unit, When receiving advertisement request information transmitted from the lower node communication unit, it is preferable to transmit the advertisement information stored in the storage unit to the lower node communication unit.

In addition, it is preferable that the upper node communication unit and the lower node communication unit communicate with any one of WirelessHART and ISA100.11a.

In order to solve the above-mentioned problems, the information transmission terminal according to the present invention is connected to the upper node communication unit for communicating with the upper node, the lower node communication unit for communicating with the lower node, the upper node communication unit and the lower node communication signal for signal processing The processor may include a storage unit configured to store write key information transmitted from the signal processor and to provide stored key information when requested by the signal processor.

Here, the signal processing unit transmits the information of the upper node communication unit to the lower node communication unit, transmits the information of the lower node communication unit to the upper node communication unit, stores the light key information transmitted from the upper node communication unit in the storage unit, and the lower node. When receiving join request information of the communication unit, it is preferable to transmit the stored light key information to the lower node communication unit.

In order to solve the above problems, the information delivery method according to the present invention, the advertisement information receiving step of receiving the advertisement information from the network manager, the advertisement information storage step of storing the received advertisement information, the received advertisement information to the new entry terminal Retransmitting advertisement information for resending, receiving advertisement information request for receiving advertisement request information from the new entry terminal, acquiring advertisement information for acquiring stored advertisement information, and transmitting advertisement information for transmitting the obtained advertisement information to the new entry terminal It includes.

Here, when there is no stored advertisement information, the advertisement information transmitting step may be performed again from the advertisement information receiving step without acquiring the advertisement information.

In order to solve the above-mentioned problems, the information delivery method according to the present invention is a subscription request information transmitting step of transmitting subscription request information to the network manager, a lightkey information receiving step of receiving the lightkey information from the network manager, received lightkey A light key information storing step of storing information, a subscription request information receiving step of receiving subscription request information from a new entry terminal, a light key information obtaining step of obtaining stored light key information when receiving the subscription request information, and obtained light key information The step of transmitting a light key information to the new entry terminal.

Here, the step of transmitting the subscription request information may be transmitted on behalf of the new entry terminal, and when the subscription request information is received at the new entry terminal, it is preferable to transmit the received subscription request information.

In addition, the step of obtaining the light key information may be performed again from the step of transmitting the subscription request information which transmits the received subscription request information to the network manager when there is no stored light key information.

In addition, the light key information storing step may store the received light key information only when the light key for the requested subscription request information is received when there is previously stored light key information.

The information transmitting terminal and method according to the present invention temporarily stores information of an upper node in the information transmitting terminal so that the information of the upper node temporarily stored in the information transmitting terminal is transmitted to the lower node when the lower node requests information from the lower node. Has the effect of providing a device that can be delivered directly.

In addition, the information delivery terminal and method according to the present invention has the effect of providing the advertisement information, which is necessary information when connecting from the lower node to the upper node, and the information of the light key, which is a response to the access permission request, directly from the information delivery terminal. Have

1 is a structural diagram of an information transmitting terminal according to a first embodiment of the present invention.

FIG. 2 is a flowchart illustrating a forward relay operation of advertisement information and light key information performed by the information transmitting terminal of FIG. 1.

3 is a flowchart illustrating a reverse relay operation of advertisement request information and subscription request information performed by the information delivery terminal of FIG. 1.

4 is a flowchart illustrating a storage operation of received forward advertisement information and light key information performed by the information transmitting terminal of FIG. 1.

5 is a flowchart illustrating a transmission operation of stored forward advertisement information and light key information performed by the information transmitting terminal of FIG. 1.

6 is a network diagram of an information delivery terminal according to a second embodiment of the present invention.

7 is a flowchart illustrating transmission and reception of advertisement information performed by the information delivery terminal of FIG. 6.

8 is a timing diagram of transmission and reception of advertisement information performed in the information delivery terminal network of FIG. 6.

9 is a flowchart illustrating transmission and reception of advertisement information and light key information performed by the information delivery terminal of FIG. 6.

FIG. 10 is a timing diagram of transmitting and receiving advertisement information and light key information performed in the information delivery terminal network of FIG. 6.

11 is a network diagram of an information delivery terminal according to a third embodiment of the present invention.

12 is a timing diagram of transmission and reception of advertisement information performed in the information delivery terminal network of FIG. 11.

FIG. 13 is a timing diagram of transmission and reception of advertisement information and light key information performed in the information delivery terminal network of FIG. 11.

14 is a block diagram of an advertisement information transmission and reception network of an information delivery terminal network according to a fourth embodiment of the present invention.

15 is a block diagram of a light key information transmission and reception network of an information transmitting terminal according to a fourth embodiment of the present invention.

1 is a structural diagram of an information delivery terminal 100 according to a first embodiment of the present invention, the information delivery terminal 100 according to the first embodiment of the present invention is an upper node communication unit 120 for communicating with an upper node, Advertisement transmitted from the signal processing unit 110 and the signal processing unit 110 connected to the lower node communication unit 130, the higher node communication unit 120, and the lower node communication unit 130 to communicate with the lower node to perform signal processing. ) And a storage unit 140 for storing the information and providing the stored advertisement information when requested by the signal processing unit 110.

The upper node communication unit 120 communicates with the upper node and may be another information transmitting terminal located between the network manager or the network manager and the information transmitting terminal 100 which will be described later. The upper node connects to WirelessHART or ISA100.11a, a wireless process control system protocol.

The lower node communication unit 130 communicates with the lower node and may be a new entry terminal or another information transmission terminal located between the new entry terminal and the information transmission terminal 100 to be described later. The lower node, like the upper node, is connected to WirelessHART or ISA100.11a, a wireless process control system protocol.

The signal processor 110 is connected to the upper node communication unit 120 and the lower node communication unit 130 to perform signal processing, and transmits the information received from the upper node communication unit 120 to the lower node communication unit 130 or lower. It transmits the information received from the node communication unit 130 to the upper node communication unit 120. In addition, the sensor information of the information transmission terminal 100 or data for communication to the network manager to be described later exchanges the information through the upper node communication unit 120.

In addition, the signal processor 110 stores the advertisement information received from the upper node communication unit 120 in the storage unit 140, and acquires the advertisement information stored in the storage unit 140 and transmits the advertisement information to the lower node communication unit 130. Do this. In addition, when the advertisement request information is received by the lower node communication unit 130, the advertisement information previously stored in the storage 140 is transmitted to the lower node communication unit 130.

The storage 140 stores advertisement information transmitted from the signal processor 110 and provides the stored advertisement information when requested by the signal processor 110 and is controlled by the signal processor 110.

The information transmitting terminal 100 may use a write key transmitted from an upper node by join request information requesting entry into a network from a lower node in addition to receiving, storing, and transmitting advertisement information of an upper node. ) Also receives, stores, and transmits information.

That is, the information transmitting terminal 100 receives, stores, and transmits the light key information transmitted from the upper node by the subscription request information, the upper node communication unit 120 communicating with the upper node, and the lower node communicating with the lower node. The signal processing unit 110 is connected to the communication unit 130, the upper node communication unit 120, and the lower node communication unit 130 to perform signal processing, and stores the light key information transmitted from the signal processing unit 110 and the signal processing unit 110. ) Is configured identically to a storage 140 that provides stored light key information upon request.

The upper node communication unit 120 communicates with the upper node and may be another information transmitting terminal 100 located between the network manager or the network manager and the information transmitting terminal 100 which will be described later. The upper node connects to WirelessHART or ISA100.11a, a wireless process control system protocol.

In addition, the signal processor 110 stores the advertisement information received from the upper node communication unit 120 in the storage unit 140, obtains the light key information stored in the storage unit 140, and transmits the light key information to the lower node communication unit 130. Play a role. In addition, when the subscription request information is received by the lower node communication unit 130, the light key information previously stored in the storage unit 140 is transmitted to the lower node communication unit 130.

The storage 140 stores the light key information transmitted from the signal processor 110 and provides the stored light key information when requested by the signal processor 110. The storage 140 is controlled by the signal processor 110.

2 is a flowchart illustrating a forward relay operation of the advertisement information and the light key information performed by the information transmitting terminal 100 of FIG. 1, and the advertisement receiving the advertisement information and the light key information by communicating with an upper node in the upper node communication unit 120. Receiving information and light key information receiving step (S110) and advertising information transmission and light key information for transmitting the advertising information and light key information to the lower node communication unit 130 to communicate the received advertising information and light key information to the lower node. The transmission step (S120) is performed.

Advertisement information is transmitted from a higher node at regular intervals and has a disadvantage in that the transmission period is long. In order to compensate for this disadvantage, the information delivery terminal 100 or the lower node transmits the advertisement request information to the upper node. In this case, the upper node immediately transmits the same advertisement information.

Meanwhile, the light key information is transmitted from the upper node only when the information transmitting terminal 100 or the lower node requests subscription request information as higher information.

In the advertisement information receiving and light key information receiving step (S110), the advertisement information and the light key information transmitted from the upper node are received and immediately transmitted to the lower node in the advertisement information transmitting and light key information transmitting step (S120).

The forward relaying operation of the advertisement information and the light key information is a method of directly relaying the advertisement information and the light key information without storing the advertisement information and the light key information, and may be performed irrespective of storing the advertisement information and the light key information.

3 is a flowchart illustrating a reverse relay operation of advertisement request information and subscription request information performed by the information transmitting terminal 100 of FIG. 1, and receives the advertisement request information and the subscription request information by communicating with the lower node in the lower node communication unit 130. The advertisement request information and the subscription request information receiving step (S210) and the advertisement request information for transmitting the advertisement request information and the subscription request information to the upper node communication unit 120 to transmit the received advertisement request information and the subscription request information to the upper node. And subscription request information transmission step (S220).

The advertisement request information is transmitted from the lower node when the advertisement information transmitted from the upper node is not received. The information transmitting terminal 100 receives the advertisement request information and transmits the received advertisement information to the upper node so that the upper node immediately transmits the advertisement information. .

On the other hand, the subscription request information is information transmitted by the lower node to register the network in which the information delivery terminal 100 is registered, and the information delivery terminal 100 relays the subscription request information to the higher node and transmits it.

The reverse relay operation of the advertisement request information and the subscription request information is a method of relaying the stored advertisement information and the light key information directly to the upper node instead of transmitting the stored advertisement information and the light key information to the lower node, and transmitting the stored advertisement information and the light key information. Can be performed irrespective of

4 is a flowchart illustrating a storage operation of the received forward advertisement information and light key information performed by the information transmitting terminal 100 of FIG. 1, and the upper node communication unit 120 communicates with the higher node to receive the advertisement information and the light key information. The advertisement information and the light key information receiving step (S310) and the advertisement information and light key information storing step (S320) for storing the received advertisement information and light key information are performed.

In the receiving advertisement information and the light key information step S310, the advertisement information and the light key information transmitted from the upper node are received and immediately stored in the storage 140 in the advertisement information and light key information storage step S320.

The operation of storing the advertisement information and the light key information has an advantage that the stored advertisement information and the light key information can be transmitted before the lower node receives the upper node if necessary.

5 is a flowchart illustrating a transmission operation of stored forward advertisement information and light key information performed by the information transmitting terminal 100 of FIG. 1, and the lower node communication unit 130 communicates with the lower node to receive the advertisement request information and the subscription request information. Receiving advertisement request information and subscription request information (S410), the stored advertising information and the light key information acquisition step (S420) for obtaining the advertisement information and the light key information stored in the storage 140, and the obtained advertisement information and light Stored advertisement information and light key information transmission step of transmitting the key information to the lower node is performed (S430).

The advertisement request information is information transmitted when the advertisement information of the upper node is not received by the lower node, and the information transmitting terminal 100 receives the advertisement request information of the lower node through the lower node communication unit 130. The information delivery terminal 100 obtains the stored advertisement information and the light key information in step S420, if there is advertisement information stored in the storage 140, and obtains the stored advertisement information and the light key information through the step S430. Send a piece of information.

On the other hand, the subscription request information is information transmitted from the lower node to the higher node in order to register in the network in which the information delivery terminal 100 is registered, and the information delivery terminal 100 transmits the subscription request information to the lower node communication unit 130. Receive through. If there is the stored light information in the storage 140 in the step S420 of obtaining the stored advertising information and the light key information, the information transmitting terminal 100 obtains the light key information from the storage 140 and then stores the stored advertising information. The light key information obtained through the light key information transmitting step S430 is transmitted.

The operation of acquiring and transmitting the stored advertisement information and the light key information has an advantage of transmitting the stored advertisement information and the light key information before receiving it from the upper node if necessary in the lower node.

6 is a diagram illustrating a network configuration of an information delivery terminal 101 according to a second exemplary embodiment of the present invention, and FIGS. 7 to 10 are operational flowcharts and timing diagrams for describing FIG. 6 in detail.

Hereinafter, an information delivery terminal and a method according to a second embodiment of the present invention will be described with reference to FIGS. 6 to 10.

First, referring to FIG. 6, the network of the information delivery terminal 101 according to the second embodiment is a network manager 201 used as an upper node of the information delivery terminal 101 and a lower node of the information delivery terminal 101. The new entry terminal 301 to be used, and the network manager 201 is located in the middle of the new entry terminal 301 to the information delivery terminal 101 to relay the information of the network manager 201 and the new entry terminal 301. It is composed.

The network manager 201 is a manager of a network to which the information transmitting terminal 101 belongs and manages new creation, removal, and the like of network nodes. The network manager 201 periodically transmits advertisement information informing of access information of the network, and immediately transmits the same advertisement information when the advertisement request information is received from the information delivery terminal 101 or the new entry terminal 301.

In addition, when the network manager 201 receives the subscription request information for requesting access to the network managed by the network manager 201, the network manager 201 transmits the light key information as acceptance information.

Therefore, the advertisement request information and the subscription request information transmitted from the new entry terminal 301 are received by the network manager 201 through the information transmitting terminal 101 and the advertisement information transmitted from the network manager 201 in response thereto. The light key information is received by the new entry terminal 301 through the information transmitting terminal 101.

However, since the new entry terminal 301 needs to go through the information transmission terminal 101, there is a time delay. Therefore, the new entry terminal 301 stores the advertisement information and the light key information which are normally received in the information transmission terminal 101 and the new entry terminal 301. When the advertisement request information and the subscription request information are received, the delayed time can be minimized by transmitting the stored advertisement information and the light key information first.

FIG. 7 is a flowchart of advertisement information transmission and reception performed by the information delivery terminal 101 of FIG. 6, and the advertisement information receiving step (S510) of receiving the advertisement information of the network manager 201 from the information delivery terminal 101 and the received advertisement. Advertising information storage step (S520) for storing information, advertising information retransmission step (S530) for retransmitting the received advertising information to the new entry terminal 301, advertisement request information for receiving the advertisement request information from the new entry terminal (301) The reception step (S540), the advertisement information acquisition step of obtaining the stored advertisement information (S550), and the advertisement information transmission step (S560) of transmitting the obtained advertisement information to the new entry terminal 301.

In the advertisement information receiving step (S510), the advertisement information of the network manager 201 is received by the information transmitting terminal 101, the received advertisement information is stored in the advertisement information storing step (S520), and the received advertisement information is stored in the advertisement information. In the retransmission step (S530) it is retransmitted to the new entry terminal 301.

However, when the new entry terminal 301 does not recognize the advertisement information, the advertisement request information transmitted from the new entry terminal 301 is received in step S540 of receiving the advertisement request information. The information transmitting terminal 101 obtains the advertisement information stored in the advertisement information storing step S520 in the advertisement information obtaining step S550 and transfers the advertisement information obtained through the advertisement information transmitting step S560 to the new entry terminal 301. Send.

Here, when the advertisement request information is not received from the new entry terminal 301 in the advertisement request information receiving step (S540), it ends without performing the advertisement information obtaining step (S550). In addition, if there is no advertisement information stored in the advertisement information acquisition step (S550), after performing the advertisement request information and subscription request information transmission (S220) of FIG. 3 without performing the advertisement information transmission step (S510) from Perform again to receive advertisement information.

FIG. 8 is a timing diagram of transmitting and receiving advertisement information performed by the information transmitting terminal 101 network of FIG. 6. First, advertisement information S611 to be received in the advertisement information receiving step S510 is transmitted from the network manager 201 to the information delivery terminal 101. At this time, the information delivery terminal 101 stores the received advertisement information (S611) in the advertisement information storage step (S520) (S621). After storing, the information delivery terminal 101 retransmits the advertisement information S622 to the new entry terminal 301 in the next step, the advertisement information retransmission step S530. At this time, since the new entry terminal 301 is in the OFF state, it does not receive the advertisement information (S622).

When the advertisement request information S631 is transmitted from the new entry terminal 301 that has not received the advertisement information S622 to the information delivery terminal 101, the advertisement request information reception step S540 receives the advertisement request information S631. The information delivery terminal 101 acquires advertisement information previously stored in the advertisement information obtaining step S550 (S623) and transmits the advertisement information S624 to the new entry terminal 301 to perform the advertisement information transmitting step S560. Perform.

Thus, the new entry terminal 301 has an advantage of reducing the time delay by receiving the advertisement information directly from the information delivery terminal 101 without transmitting the information to the network manager 201.

FIG. 9 is a flowchart illustrating transmission and reception of advertisement information and light key information performed by the information delivery terminal 101 of FIG. 6, and the advertisement information receiving step (S811) of receiving the advertisement information of the network manager 201 from the information delivery terminal 101. Advertisement information storage step (S812) of storing the received advertisement information, advertisement information retransmission step (S813) of retransmitting the received advertisement information to the new entry terminal 301, receiving the advertisement request information from the new entry terminal (301) The advertisement request information receiving step (S814), the advertisement information obtaining step of obtaining stored advertisement information (S815), and the advertisement information transmitting step (S816) of transmitting the obtained advertisement information to the new entry terminal (301).

After the advertisement information sending step S816, the step of transmitting the light key information by the subscription request is a subscription request information sending step S821 for transmitting subscription request information from the information delivery terminal 101 to the network manager 201, Receive the light key information receiving step S822 for receiving the light key information from the network manager 201, storing the light key information for storing the received light key information S823, and receiving subscription request information from the new entry terminal 301. The registration request information receiving step (S824) to receive, the light key information acquisition step (S825) for obtaining the light key information stored in the information delivery terminal 101 when receiving the subscription request information, and the obtained light key information to the new entry terminal 301 In step S826, a light key information transmitting step is performed.

In the advertisement information receiving step S811, the advertisement information of the network manager 201 is received by the information transmitting terminal 101, the received advertisement information is stored in the advertisement information storing step S812, and the received advertisement information is then stored in the advertisement information. In the retransmission step (S813) it is retransmitted to the new entry terminal 301.

However, when the new entry terminal 301 does not recognize the advertisement information, the advertisement request information transmitted from the new entry terminal 301 is received in the advertisement request information receiving step S814. The information transmitting terminal 101 obtains the advertisement information stored in the advertisement information storing step S812 in the advertisement information obtaining step S815 and transfers the advertisement information obtained through the advertisement information transmitting step S816 to the new entry terminal 301. Send.

Here, when the advertisement request information is not received from the new entry terminal 301 in the advertisement request information receiving step (S814), it ends without performing the advertisement information obtaining step (S815). In addition, if there is no advertisement information stored in the advertisement information acquisition step S815, the advertisement information reception step S510 is performed again without transmitting the advertisement information.

On the other hand, the subscription request information transmission step (S821) is characterized in that the transmission on behalf of the new entry terminal 301, when the subscription request information is received in the new entry terminal 301 is to transmit the received subscription request information desirable.

The information transmitting terminal 101 receives the light key information from the network manager 201 through the light key information receiving step S822 and stores the received light key information in the light key information storing step S823.

When receiving the subscription request information from the new entry terminal 301 in the step of receiving the subscription request information (S824), the lightkey information stored in the lightkey information storage step (S823) is obtained through the lightkey information acquisition step (S825). The obtained light key information is transmitted to the new entry terminal 301 through the light key information transmission step (S826).

In the case where there is no stored light key information, the step of obtaining the light key information (S825) may be performed again from the step of receiving the subscription request information (S821) of transmitting the received subscription request information to the network manager.

In addition, it is preferable to store the light key information storing step (S823) only when the light key for the requested subscription request information exists when there is existing stored light key information.

Here, when the subscription request information is not received in the subscription request information receiving step (S824), it ends without performing the light key information obtaining step (S825). In addition, if there is no stored light key information in the light key information acquisition step (S825), the data is performed again from the subscription request information transmission step (S821) without transmitting the light key information.

FIG. 10 is a timing diagram of transmitting and receiving advertisement information and light key information performed in the information transmitting terminal 101 network of FIG. 6. First, in the advertisement information receiving step S811, the advertisement information S611 is transmitted from the network manager 201 to the information delivery terminal 101. At this time, the information delivery terminal 101 stores the advertisement information (S611) through the advertisement information storage step (S812) step (S621). After storing, the information delivery terminal 101 retransmits the advertisement information S622 to the new entry terminal 301 as the advertisement information retransmission step S813. At this time, since the new entry terminal 301 is in the OFF state, it is impossible to receive the advertisement information S622.

Thereafter, the new entry terminal 301 transmits the advertisement request information S631 from the new entry terminal 301 to the information delivery terminal 101 as an advertisement request information receiving step S814 in order to access the information delivery terminal 101 network. When transmitting, the information delivery terminal 101 obtains the advertisement information previously stored in the advertisement information obtaining step S815 (S623), and transmits the advertisement information S624 from the information delivery terminal 101 to the new entry terminal 301. By doing so, the advertisement information transmitting step S816 is performed.

In the subscription request information transmission step (S821), the information transfer terminal 101 requests the network manager 201 for subscription request information S625 instead of the new entry terminal 301. The network manager 201 transmits the light key information S612 to the information delivery terminal 101 in response to the subscription request information S625. The information transmitting terminal 101 receives the light key information S612 as the light key information receiving step S822, stores the light key information S612 in step S626, and performs the light key information storing step S823.

Meanwhile, the new entry terminal 301 transmits the subscription request information S632 to the information delivery terminal 101 and receives the subscription request information S632 through the step of receiving the subscription request information S824 from the information delivery terminal 101. Next, the stored light key information S626 is acquired in the light key information acquisition step S825 (S627), and the light key information S628 obtained in the light key information transmission step S826 is transmitted.

11 is a diagram illustrating a network configuration of an information delivery terminal 100 according to a third exemplary embodiment of the present invention, and FIGS. 12 to 13 are timing diagrams for describing FIG. 11 in detail.

Hereinafter, an information delivery terminal and a method according to a third embodiment of the present invention will be described with reference to FIGS. 11 to 13.

First, referring to FIG. 11, an information delivery terminal 100 network according to a third embodiment of the present invention is a network manager 202 used as an upper node of an information delivery terminal 102 and a lower portion of the information delivery terminal 102. It is composed of a new entry terminal 302 used as a node, and an information delivery terminal 102 located in the middle of the network manager 202 and the network manager 202 to relay. In addition, the new entry terminal 302 is characterized in that the wireless communication is possible through the delay component 402, which causes a delay in communication with the network manager 202.

The network manager 202 is a manager of a network to which the information transmitting terminal 102 belongs, and manages new creation, removal, and the like of network nodes. The network manager 202 periodically transmits advertisement information informing of connection information of the network, and immediately transmits the same advertisement information when the advertisement request information is received from the information delivery terminal 102 or the new entry terminal 302.

In addition, the network manager 202 transmits the light key information as acceptance information when the subscription request information for requesting access to the network managed by the network manager 202 is received.

Conventionally, the advertisement request information and the subscription request information transmitted from the new entry terminal 302 are received by the network manager 202 through the information delivery terminal 102 and the advertisement information transmitted from the network manager 202 in response thereto. The lightkey information is received at the new entry terminal 302 via the information delivery terminal 102.

In addition, the advertisement request information and the subscription request information transmitted from the new entry terminal 302 are directly received by the network manager 202 and the advertisement information and the light key information transmitted from the network manager 202 in response thereto are newly entered terminal. 302 is received at the same time.

However, if there is a delay component 402 due to a radio delay or other node between the network manager 202 and the new entry terminal 302, the reception of the advertisement information and the lightkey information is delayed.

Therefore, in order to solve this problem, the advertisement information and the light key information which are normally received by the information transmission terminal 102 are stored, and when the advertisement request information and the subscription request information are received from the new entry terminal 302, the stored advertisement information and the light key information are received. By transmitting the time delay can be minimized.

FIG. 12 is a timing diagram of transmitting and receiving advertisement information performed in the information delivery terminal 102 network of FIG. 11. First, the network manager 202 transmits the advertisement information S712 and S711 to the information delivery terminal 102 and the new entry terminal 302. At this time, since the new entry terminal 302 is OFF, the advertisement information S711 is not received, and only the information delivery terminal 102 receives the advertisement information S712.

The information delivery terminal 102 stores the received advertisement information S712 (S721) and transmits the received advertisement information S722 to the new entry terminal 302. At this time, since the new entry terminal 302 is still in the OFF state, it does not receive the advertisement information (S722).

When the new entry terminal 302 is turned on, the new entry terminal 302 transmits the advertisement request information S731 and S732 to the network manager 202 and the information delivery terminal 102 to access the network. The information delivery terminal 102 obtains advertisement information stored in the information delivery terminal 102 (S723) and transmits the advertisement information S724 to the new entry terminal 302. On the other hand, the network manager 202 receives the advertisement request information S731 after a certain time delay by the delay component 402 and then transmits the advertisement information S713 to the new entry terminal 302. However, it is received by the new entry terminal 302 after a certain time delay by the delay component 402 than the advertisement information S724 transmitted from the information delivery terminal 102.

That is, the advertisement information S724 transmitted from the information delivery terminal 102 arrives at the new entry terminal 302 prior to the advertisement information S713 transmitted from the network manager 202 so that the advertisement information can be obtained as soon as possible. There is this.

FIG. 13 is a timing diagram of transmitting and receiving advertisement information and light key information performed in the information delivery terminal 102 network of FIG. 11. As in FIG. 12, the advertisement information is transmitted until the advertisement information S724 is transmitted. After the advertisement information S724 is transmitted, the advertisement information S724 may be divided into the subscription request information S725 and the light key information S715. have.

First, in the transmission step of the advertisement information, the network manager 202 transmits the advertisement information (S712, S711) to the information delivery terminal 102 and the new entry terminal 302. At this time, since the new entry terminal 302 is OFF, the advertisement information S711 is not received, and only the information delivery terminal 102 receives the advertisement information S712.

The information delivery terminal 102 stores the received advertisement information S712 (S721) and transmits the advertisement information S722 stored to the new entry terminal 302. At this time, since the new entry terminal 302 is in the OFF state, it does not receive the advertisement information (S722).

When the new entry terminal 302 is turned on, the advertisement request information S731 and S732 are transmitted to the network manager 202 and the information delivery terminal 102 to access the network. The information delivery terminal 102 obtains advertisement information stored in the information delivery terminal 102 (S723) and transmits the advertisement information S724 to the new entry terminal 302.

Meanwhile, in the step of transmitting the light key information, the subscription request information S725 is previously transmitted to the network manager 201 from the information delivery terminal 101 having completed the step of transmitting the advertisement information in place of the new entry terminal 301. In response, the network manager 201 transmits the light key information S715 and S714 to the information delivery terminal 102 and the new entry terminal 302.

At this time, since the new entry terminal 302 does not transmit the subscription request information, the light key information S714 is ignored, while the information transmission terminal 102 stores the received light key information S715 (S726). .

Thereafter, the new entry terminal 302 transmits subscription request information S733 and S734 to the network manager 202 and the information delivery terminal 102 for accessing the network. The information delivery terminal 102 obtains the light key information stored in the information delivery terminal 102 (S727) and transmits the obtained light key information (S728) to the new entry terminal 302. Meanwhile, the network manager 202 transmits the light key information S716 to the new entry terminal 302 immediately after receiving the subscription request information S733, but delays the component 402 from the light key information S728 by radio delay. After a certain time delay by the new entry terminal 302 is received.

That is, the light key information S728 transmitted from the information delivery terminal 102 arrives at the new entry terminal 302 before the light key information S716 transmitted from the network manager 202 to obtain the light key information as soon as possible. There are advantages to it.

14 to 15 are block diagrams sequentially illustrating advertisement information and light key information transmission / reception networks of the information delivery terminal 107 network according to the fourth embodiment;

Hereinafter, an information delivery terminal and a method according to a fourth embodiment of the present invention will be described with reference to FIGS. 14 to 15.

First, referring to FIG. 14, in the advertisement information transmission / reception network of the information delivery terminal 107 network according to the fourth embodiment of the present invention, the network manager 203 and the network manager 203 used as network managers are referred to as upper nodes.

Information delivery terminal

103, 104, 105 to be used, information delivery terminal 106 using the information delivery terminal 104 as the upper node, information delivery terminal 107 using the information delivery terminal 105 as the upper node, and information delivery. It consists of a new entry terminal 303 using the terminal 107 as a higher node.

The network manager 203 is a manager of the network to which the information delivery terminal 107 belongs, and manages the creation, removal, etc. of network nodes. The network manager 203 periodically transmits advertisement information informing of access information of the network, and immediately transmits the same advertisement information when the advertisement request information is received from the information delivery terminal 107 or the new entry terminal 303.

Conventionally, the advertisement request information S942 transmitted from the new entry terminal 303 is received by the network manager 203 through the information delivery terminal 107 and in response thereto, the advertisement information S941 transmitted from the network manager 201. ) Is received at the new entry terminal 303 via the information delivery terminal 107.

Therefore, since the new entry terminal 303 has to go through the information transmission terminal 107, a time delay occurs. In order to solve this problem, the new entry terminal 303 stores the advertisement information S951 which is normally received from the information transmission terminal 107, and thus the new entry terminal ( When the advertisement request information S962 is received from the 303, the stored advertisement information S961 may be transmitted to the new entry terminal 303 to minimize the time delay.

Fig. 15 is a block diagram of a light key information transmission / reception network of the information transmitting terminal 107 according to the fourth embodiment of the present invention, wherein the network manager 203 and the network manager 203 used as network managers are used as upper nodes.

Information delivery terminal

103, 104, 105, information delivery terminal 106 using information delivery terminal 104 as a parent node, information delivery terminal 107 using information delivery terminal 105 as a parent node, and information delivery terminal ( A new entry terminal 303 using 107 as an upper node.

The network manager 203 is a manager of the network to which the information delivery terminal 107 belongs, and manages the creation, removal, etc. of network nodes.

Conventionally, the subscription request information S912 transmitted from the new entry terminal 303 is received by the network manager 203 through the information delivery terminal 107 and the light key information transmitted from the network manager 201 in response thereto ( S911 is received by the new entry terminal 303 through the information delivery terminal 107.

Therefore, since the new entry terminal 303 has to go through the information transmission terminal 107, a time delay occurs, and in order to solve this problem, the subscription request information S922 is first used instead of the new entry terminal 303. Send to the network manager 203 to receive and store the light key information (S921), and when the subscription request information (S932) is received from the new entry terminal 303, the stored light key information (S931) to the new entry terminal 303 ) To minimize time delay.

As such, the technical configuration of the present invention described above can be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the foregoing detailed description, and the meaning and scope of the claims are as follows. And all changes or modifications derived from the equivalent concept should be construed as being included in the scope of the present invention.

The information delivery terminal according to the present invention, by temporarily storing the information of the upper node in the information delivery terminal, the information of the upper node temporarily stored in the information transmission terminal directly to the lower node without a request to the upper node when the lower node requests information of the upper node. It can be applied to wireless network and wireless terminal which can manage wireless network efficiently by transmitting.

Claims

An upper node communication unit communicating with an upper node;

A lower node communication unit communicating with the lower node;

A signal processor connected to the upper node communication unit and the lower node communication unit to perform signal processing;

And a storage unit for storing the advertisement information transmitted from the signal processor and providing the stored advertisement information when requested by the signal processor.
The method of claim 1,

The signal processing unit,

And an information transmitting terminal for transmitting the information of the upper node communication unit to the lower node communication unit.
The method of claim 1,

The signal processing unit,

The information transmitting terminal, characterized in that for transmitting the information of the lower node communication unit to the upper node communication unit.
The method of claim 1,

The signal processing unit,

And an advertisement information transmitted from the upper node communication unit and stored in the storage unit.
The method of claim 1,

The signal processing unit,

And receiving advertisement request information transmitted from the lower node communication unit, transmitting the advertisement information stored in the storage unit to the lower node communication unit.
The method of claim 1,

The upper node communication unit,

An information delivery terminal, characterized in that communicating with any one of WirelessHART and ISA100.11a.
The method of claim 1,

The lower node communication unit,

Information transmitting terminal, characterized in that for communicating with any one of the WirelessHART and ISA100.11a.
An upper node communication unit communicating with an upper node;

A lower node communication unit communicating with the lower node;

A signal processor connected to the upper node communication unit and the lower node communication unit to perform signal processing;

And a storage unit configured to store write key information transmitted from the signal processor and to provide the stored light key information when requested by the signal processor.
The method of claim 8,

The signal processing unit,

And an information transmitting terminal for transmitting the information of the upper node communication unit to the lower node communication unit.
The method of claim 8,

The signal processing unit,

The information transmitting terminal, characterized in that for transmitting the information of the lower node communication unit to the upper node communication unit.
The method of claim 8,

The signal processing unit,

And storing the light key information transmitted from the upper node communication unit in the storage unit.
The method of claim 8,

The signal processing unit,

And when the join request information of the lower node communication unit is received, the stored light key information to the lower node communication unit.
The method of claim 8,

The upper node communication unit,

An information delivery terminal, characterized in that communicating with any one of WirelessHART and ISA100.11a.
The method of claim 8,

The lower node communication unit,

Information transmitting terminal, characterized in that for communicating with any one of the WirelessHART and ISA100.11a.
An advertisement information receiving step of receiving advertisement information from a network manager;

An advertisement information storing step of storing the received advertisement information;

Receiving an advertisement information request for receiving advertisement request information from the new entry terminal;

Obtaining advertisement information for acquiring the stored advertisement information; And

And transmitting the obtained advertisement information to the new entry terminal.
The method of claim 15,

In the advertisement information storage step,

And retransmit the received advertisement information to the new entry terminal.
The method of claim 15,

In the advertisement information acquisition step,

If the stored advertisement information does not exist, the information delivery method characterized in that it is performed again from the advertisement information receiving step without performing the advertisement information acquisition.
A subscription request information transmitting step of transmitting subscription request information to a network manager;

A light key information receiving step of receiving light key information from the network manager;

A light key information storage step of storing the received light key information;

A subscription request information receiving step of receiving subscription request information from a new entry terminal;

A light key information obtaining step of obtaining the stored light key information when the subscription request information is received; And

And a light key information transmission step of transmitting the obtained light key information to the new entry terminal.
The method of claim 18,

The subscription request information transmitting step,

And transmitting on behalf of the new entry terminal.
The method of claim 18,

The subscription request information transmitting step,

And receiving the subscription request information when the subscription request information is received at the new entry terminal.
The method of claim 18,

The step of obtaining the light key information,

And transmitting the received subscription request information to the network manager if there is no stored light key information.
The method of claim 18,

The light key information storing step,

And when there is previously stored light key information, storing the received light key information only when a light key for the requested subscription request information is received.