WO2016104847A1

WO2016104847A1 - Wireless lan d2d duplexing terminal and method

Info

Publication number: WO2016104847A1
Application number: PCT/KR2014/012935
Authority: WO
Inventors: 최종민; 강승엽; 박유경; 양성열; 윤석문
Original assignee: 두산중공업 주식회사
Priority date: 2014-12-26
Filing date: 2014-12-26
Publication date: 2016-06-30

Abstract

A wireless LAN D2D duplexing terminal according to the present invention comprises: a master wireless LAN D2D terminal storing a master IP and connected to a slave wireless LAN D2D terminal; and the slave wireless LAN D2D terminal storing the master IP and capable of master-switching to the master IP, so as to enable the slave wireless LAN D2D terminal to use the master IP of the master wireless LAN D2D terminal.

Description

Wireless LAN D2D Duplication Terminal and Method

The present invention relates to a wireless LAN D2D duplex terminal and method, and more particularly, to master slave IP of a master wireless LAN D2D terminal when a master wireless LAN D2D terminal and a slave wireless LAN D2D terminal are duplicated. The present invention relates to an apparatus and a method for master conversion using the same.

The WLAN has a feature of operating in a topology of a star structure around the WLAN AP. However, in recent years, as the amount of data between WLAN terminals communicating mainly with the WLAN AP increases, standardization of the D2D method for communication between WLAN terminals without progressing through the WLAN AP is in progress.

For example, British Patent No. 201205806 includes a method for enabling communication between WLAN terminals by transmitting a signaling message for device to device (D2D) communication in a core network providing a WLAN. .

However, in the industrial field, the reliability of the equipment is important and redundancy is being used. However, in the case of equipment that does not have redundancy, it is difficult to mix and use the equipment with redundancy. That is, in the case of the ring topology among the network topologies, two WLAN D2D transceivers are always required to be connected to each other between redundant equipments, but in the case of equipment that does not have redundancy applied, only one WLAN D2D transceiver can be connected to the outside. There is a problem in that it is impossible to configure a network topology in a ring type between devices.

The present invention has been made to solve the above problems, the master IP of the master WLAN D2D UE is stored in the slave WLAN D2D UE by using the master IP when switching the master by switching to another master WLAN D2D terminal An object of the present invention is to provide an apparatus for directly accessing a WLAN D2D terminal without additional procedures for master access.

In addition, an object of the present invention is to use a master IP of the WLAN D2D duplexing terminal without change, a single slave wireless LAN D2D terminal that is not duplexable by using the master IP as it is connected to the duplication.

In order to solve the above problems, the WLAN D2D duplex terminal according to the present invention stores a master IP, the slave wireless LAN D2D terminal and the master wireless LAN connected to the slave D2D terminal and the slave IP capable of switching the master to the master IP It consists of a LAN D2D terminal.

here. The master WLAN D2D terminal is connected to a storage unit for storing a master IP, a wireless LAN transceiver for connecting with an external WLAN D2D terminal, and a slave WLAN D2D terminal and connected to an internal bus with a storage unit and a WLAN transceiver. Preferably, the storage unit stores the master IP, which is the IP of the wireless LAN transmitter / receiver used by the master, and the controller includes the master IP to transmit that the master WLAN D2D terminal is operating as a master. It is more preferable to periodically transmit its own WLAN D2D master ID signal to the slave WLAN D2D terminal.

In addition, the slave WLAN D2D terminal is a storage unit for storing the master IP, a wireless LAN transceiver for connecting to an external WLAN D2D terminal, and the master WLAN LAN is connected to the D2D terminal, the storage unit and the WLAN transceiver and the internal bus Preferably, the storage unit stores the master IP of the master WLAN D2D terminal transmitted from the master WLAN D2D terminal, and the controller stores the master IP information of the master WLAN D2D terminal from the master WLAN D2D terminal. Recognizing that the master WLAN D2D UE is operating by receiving the included external WLAN D2D master ID signal, it is more preferable to perform the master switching operation to the master IP when the master WLAN D2D UE is not operating.

In order to solve the above problems, another WLAN D2D duplex terminal according to the present invention is provided with at least two wireless LAN transceiver and at least a redundant master WLAN D2D terminal operating as a master WLAN D2D terminal when configuring a multiplexed network and at least A redundant slave WLAN D2D terminal that is connected to a redundant master WLAN D2D terminal when a multiplexed network is configured with two or more WLAN transceivers and operates as one of slave WLAN D2D terminals based on control of the redundant master WLAN D2D terminal. It is preferred to be configured.

Here, the redundant master wireless LAN D2D terminal stores a master IP indicating the IP of the redundant master wireless LAN D2D terminal, and its own wireless LAN D2D including the master IP to transmit that the redundant master wireless LAN D2D terminal is operating as a master. Periodically transmits the master ID signal to the duplicated slave WLAN D2D terminal, and has one WLAN transceiver to connect with a single slave WLAN D2D terminal operating as a slave WLAN D2D terminal based on the control of the redundant master WLAN D2D terminal. It is desirable to operate in the same way.

In addition, the redundant slave WLAN D2D terminal stores the master IP of the redundant master WLAN D2D terminal transmitted from the redundant master WLAN D2D terminal, and includes master IP information of the redundant master WLAN D2D terminal from the redundant master WLAN D2D terminal. Receives the external wireless LAN D2D master ID signal to recognize that the redundant master wireless LAN D2D terminal is operating, and if the redundant master wireless LAN D2D terminal is not operating, performs a master switching operation to the master IP, one wireless LAN It is more preferable that the transceiver is connected to a single slave WLAN D2D terminal operating as a slave WLAN D2D terminal based on the control of the redundant master WLAN D2D terminal.

In order to solve the above problems, the WLAN duplexing method according to the present invention is an external WLAN D2D master ID signal receiving step for receiving an external WLAN D2D master ID signal to determine whether there is a master, the master when operating as a master The master IP storage step of storing the master IP and storing the master IP included in the external WLAN D2D master ID signal when operating as a slave.If the external WLAN D2D master ID signal fails to receive the master IP after transmitting its own WLAN D2D master ID, It is preferable to include a master switching step of performing a master switching using, and the own WLAN D2D master ID signal transmitting the own WLAN D2D master ID signal including the master IP after the master switching.

In the WLAN D2D duplex terminal according to the present invention, the master IP of the master WLAN D2D terminal is stored by the slave WLAN D2D terminal, and the other WLAN D2D terminal is mastered by operating as a master WLAN D2D terminal using the master IP when the master is switched. It has the effect of being able to connect immediately without additional procedure for connection.

In addition, the WLAN D2D duplication terminal according to the present invention has the effect that a single slave WLAN D2D terminal that is not duplexable can be connected in duplication by using the master IP as it is without using the master IP of the WLAN D2D duplication terminal.

1 is a structural diagram of a WLAN D2D duplication terminal according to a first embodiment of the present invention.

FIG. 2 is a flowchart illustrating initialization of a WLAN D2D duplication terminal of FIG. 1.

FIG. 3 is a timing diagram for master switching of the master wireless LAN D2D user equipment of FIG. 1.

4 is a flowchart illustrating redundancy control of a WLAN D2D duplication terminal of FIG. 1.

FIG. 5 is a flowchart illustrating a master conversion in detail with reference to FIG. 4.

6 is a conceptual diagram illustrating a master switching operation when a line failure occurs in the master WLAN D2D terminal of FIG. 1.

FIG. 7 is a timing diagram of master switching when a line failure occurs in detail with reference to FIG. 6.

8 is a conceptual diagram illustrating a master switching operation when a board failure occurs in the master WLAN D2D terminal of FIG. 1.

9 is a master switching timing diagram when a board failure occurs in the master WLAN D2D terminal of FIG. 8.

FIG. 10 is a diagram illustrating a redundant WLAN D2D terminal connection configuration of a WLAN D2D redundant terminal according to a second embodiment.

FIG. 11 is a diagram illustrating a connection configuration of a single WLAN D2D user equipment of the WLAN redundant WLAN D2D user equipment of FIG. 10.

FIG. 12 is a conceptual diagram of master switching of a WLAN D2D redundant terminal for a single WLAN D2D terminal of FIG. 11.

FIG. 13 is a diagram illustrating a configuration of a redundant WLAN D2D terminal in a WLAN D2D redundant terminal according to a third embodiment.

FIG. 14 is a diagram illustrating a connection configuration of a single WLAN D2D terminal of the WLAN D2D duplication terminal of FIG. 13.

FIG. 15 is a conceptual diagram of master switching in the multiplexed WLAN D2D terminal of FIG. 14.

FIG. 16 is a master switching timing diagram of the multiplexed WLAN D2D terminal of FIG. 15.

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

As shown in FIG. 1, the WLAN D2D duplex terminal according to the first embodiment of the present invention may operate a master WLAN D2D terminal 100 operating as a master and a slave WLAN D2D terminal 200 operating as a slave. It is configured to include.

The master WLAN D2D terminal 100 includes a control unit 120 for controlling the master WLAN D2D terminal 100, a WLAN transceiver 130 for connecting to an external WLAN D2D terminal, and a WLAN transceiver 130. It is configured to include a storage unit 140 for storing a master IP indicating the IP of.

The WLAN transceiver 130 is used to connect with an external WLAN D2D terminal, and a ring type is mainly used to reliably operate the WLAN D2D terminal. In addition, when used as a star type or a tree type, since a plurality of WLAN D2D terminals need to be connected after the WLAN transceiver 130, it can be connected using a LAN switch.

The master WLAN D2D terminal 100 and the slave WLAN D2D terminal 200 are redundant components, and only the master WLAN D2D terminal 100 is used as a master, and the slave WLAN D2D terminal 200 is an auxiliary of the master. Used as a role, it is used when the master fails.

The slave WLAN D2D terminal 200 is a control unit 220 for controlling the slave WLAN D2D terminal 200, a WLAN transceiver 230 for connecting with an external WLAN D2D terminal, and a master IP when switching to a master. It is configured to include a storage unit 240 for storing the master IP to switch.

The WLAN transceiver 230 is also used to connect with an external WLAN D2D terminal, and a ring type is mainly used together with the WLAN transceiver 130 to reliably operate the WLAN D2D terminal.

The master IP stored in the storage unit 240 is initially stored with the IP of the wireless LAN transceiver 230, but when the wireless LAN D2D master ID signal is received from the controller 120 to receive the master IP, the master WLAN D2D terminal The master IP stored in the storage 140 of 100 is stored in the storage 240 of the slave WLAN D2D terminal 200.

The master decision of the master WLAN D2D terminal 100 and the slave WLAN D2D terminal 200 is not specified for each board but is initially determined at the time of booting of the WLAN D2D terminal 100.200.

2 is a flowchart illustrating the initialization of the WLAN D2D duplex terminal of FIG. 1, wherein the WLAN D2D configuration information transmitting step S110 for transmitting information of the WLAN D2D terminal and the WLAN D2D configuration information transmitting step S110 are performed for a predetermined time. Time out step (S120) to check whether the excess, the wireless LAN D2D master ID transmission and reception step (S130) step to check the presence of the master, the master check step (S140) to determine whether the master, the status in the case of the master and the state to send a control message And a control message transmission step (S150), a shared data reception step of receiving an external master signal under conditions other than the master (S160), and when there is no data, a wireless LAN D2D master ID signal transmission step notifying that the master is switched ( S170), the status and control message receiving step and the control message receiving step under the control of the external master under conditions other than the master (S180) .

The wireless LAN D2D setting information transmitting step (S110) transmits information of the control unit 120 or the control unit 220, and may include board and interface information of the control unit 120 or the control unit 220. The time out step (S120) confirms whether the WLAN D2D configuration information transmission step (S110) has exceeded a predetermined time, and is generally based on a time of 10 seconds.

Wireless LAN D2D master ID transmission and reception step (S130) is a process of the control unit 120 or the control unit 220 confirms the presence of the master when a wireless LAN D2D master ID signal is received, if there is a master, if there is no wireless LAN It sends a D2D master ID to inform that it will operate as a master.

Master confirmation step (S140) is to determine whether the control unit 120 or the control unit 220 operates as a master, if the wireless LAN D2D master ID transmission and reception step (S130) received the wireless LAN D2D master ID is determined as a slave is received If there is no WLAN D2D master ID and the WLAN D2D master ID is transmitted, it is determined that it is determined as a master.

The state and control message transmitting step (S150) is to monitor the state of the external WLAN D2D terminal or control the external WLAN D2D terminal by transmitting a state and control message when the controller 120 or the controller 220 operates as a master. Send a message for

In the step of receiving the shared data (S160), the external master signal is received under conditions other than the master, and serves to continuously receive the WLAN D2D master ID signal of the external master. At this time, if there is no WLAN D2D master ID signal, it is necessary to quickly switch to the master.

The WLAN D2D master ID signal transmitting step (S170) informs the master to switch to the master when there is no master data received from the outside, and performs sequentially from the master checking step (S140).

Receiving the status and control message step (S180) receives the status and control messages by the control of the external master when operating as a slave to recognize the existence of the external master under conditions other than the master. After the reception is performed sequentially from the master confirmation step (S140).

An initialization procedure of the WLAN D2D duplication terminal will be described in detail with reference to FIG. 3 with reference to a timing diagram.

3 is a timing diagram for master switching of the master wireless LAN D2D user equipment of FIG. 1, the wireless LAN D2D configuration information signal S211 transmitted from the master wireless LAN D2D user equipment 101, and the wireless LAN D2D master ID signal S212. , WLAN D2D master ID signal (S213), WLAN D2D master ID signal (S214) and WLAN D2D configuration information signal (S221) transmitted from the slave WLAN D2D terminal 201, and WLAN D2D master ID signal In operation S222, when the board is initially operated, the master WLAN D2D terminal 100 is switched to the master WLAN D2D terminal 101 and the slave WLAN D2D terminal 200 is switched to the slave WLAN D2D terminal 201. It shows the process of becoming.

The master WLAN D2D terminal 101 indicates the master WLAN D2D terminal 100 and times out the WLAN D2D configuration information signal S211 corresponding to the WLAN D2D configuration information transmitting step S110 (S120). Transmitted during the reference time determined by the step, and after the reference time, the wireless LAN D2D master ID transmission and reception step (S130) to receive the external wireless LAN D2D master ID signal (S222), if there is no wireless LAN D2D master ID signal (S212) ) Send the signal.

If there is no reception of the WLAN D2D master ID signal S222 for a predetermined time after the WLAN D2D master ID signal S212 is transmitted, the switch to the master. After switching to the master, the WLAN D2D master ID signal S213 is transmitted and the WLAN D2D master ID signal S214 is periodically transmitted.

The slave WLAN D2D terminal 201 indicates the slave WLAN D2D terminal 200 and times out the WLAN D2D configuration information signal S221 corresponding to the WLAN D2D configuration information transmission step S110 (S120). Transmitted during the reference time determined by the step, and after the reference time, the wireless LAN D2D master ID transmission and reception step (S130) to receive the external wireless LAN D2D master ID signal (S212), if there is no wireless LAN D2D master ID signal (S222) ) Send the signal.

When the WLAN D2D master ID signal S212 is received for a predetermined time after the WLAN D2D master ID signal S222 is transmitted, the controller switches to the slave. After switching to the slave, the wireless network periodically receives the D2D master ID signal S213 and the WLAN D2D master ID signal S214 in the step of receiving shared data (S160).

Meanwhile, in order to operate as a master, a master IP should be used, and storage and switching thereof will be described in detail with reference to FIG. 4.

4 is a flowchart illustrating a redundancy control of the WLAN D2D duplication terminal of FIG. 1, an external WLAN D2D master ID signal receiving wireless LAN D2D master ID signal receiving unit 1 310, an external WLAN D2D master ID Master IP storage WLAN transmission and reception unit 2 (320) receiving the master IP from the signal, the master switching control unit 330 to switch to the master using the master IP, and acts as a master to transmit its own WLAN D2D master ID signal The wireless LAN D2D master ID signal transmitting step (S340).

Receiving an external WLAN D2D master ID signal The WLAN transceiver unit 1310 receives an external WLAN D2D master ID signal to determine whether a master exists, and periodically monitors the WLAN D2D master ID signal. If not, quickly prepare to switch to master.

Master IP storage The wireless LAN transceiver 2 320 stores a master IP when operating as a master and a master IP included in an external WLAN D2D master ID signal when operating as a slave.

When switching to the master, the master switching control unit 330 transmits its own WLAN D2D master ID signal and performs master switching by using the master IP when the external WLAN D2D master ID signal is not received.

The self WLAN D2D master ID signal transmitting step (S340) transmits its own WLAN D2D master ID signal including the master IP after switching the master so that the external WLAN D2D terminal recognizes the master.

The flowchart after the initialization of FIG. 2 is described in detail with reference to FIG. 5 for the switching of the master IP.

FIG. 5 is a flowchart illustrating a master switching in detail of FIG. 4, and includes a master confirmation step (S141) for checking whether the master is a master, a status and control message transmission step (S151) for transmitting a status and a control message in the case of a master, and an external condition under a master. Receiving the master signal of the shared data receiving step (S161), if there is no received data to switch the master D2D master ID signal transmitting step (S171) to inform that the master, the master IP to transfer the master IP to switch to the master And master switching (S410), receiving status and control messages under control of an external master under conditions other than the master (S181), and storing the master IP (S420). do.

The master confirmation step (S141) checks whether the control unit 120 or the control unit 220 operates as a master to perform the state and control message transmission step (S151) in the case of the master, and the shared data reception step (S161) in the case of the slave. do.

Status and control message transmission step (S151) is to monitor the status of the external WLAN D2D terminal or control the external WLAN D2D terminal by transmitting a status and control message when the control unit 120 or the control unit 220 operates as a master Send a message for

In the step of receiving shared data (S161), whether the external master signal is received under conditions other than the master, and serves to continuously receive the WLAN D2D master ID signal of the external master. At this time, if there is no WLAN D2D master ID signal, it is necessary to quickly switch to the master.

Wireless LAN D2D master ID signal transmission step (S171) serves to inform that the master to switch to the master when there is no master data received from the outside, and transfer the master IP in the master IP transfer and master switching (S410) to switch to the master After that, the master confirmation step (S141) is performed sequentially.

Receiving the status and control message (S181) receives the status and control message by the control of the external master when operating as a slave by recognizing the existence of the external master under conditions other than the master. After reception, the master IP is stored in the master IP storing step (S420), and then the master checking step (S141) is performed sequentially.

Next, a description will be given of a case in which master switching is performed after initialization, and a master switching operation when a line failure occurs in the master WLAN D2D terminal 100 will be described in detail with reference to FIGS. 6 to 7.

6 is a conceptual diagram of a master switching operation when a line failure occurs in the master WLAN D2D terminal of FIG. 1, and the master WLAN D2D terminal 102 with which the slave WLAN D2D terminal 202 communicates is connected to the master WLAN D2D terminal 102. When the communication with the external WLAN D2D terminal is lost, the slave WLAN D2D terminal 202 recognizes a line failure and performs a master switching to the slave WLAN D2D terminal 203.

The master WLAN D2D terminal 102 is a master WLAN D2D terminal 100 communicating with a slave WLAN D2D terminal 202 as a master, and is external to the master WLAN D2D terminal 102 through the WLAN transceiver unit 130. When communication with the WLAN D2D terminal is lost, the communication line is recognized to switch to the master WLAN D2D terminal 103.

The slave WLAN D2D terminal 202 is a slave WLAN D2D terminal 200 that operates by recognizing the master WLAN D2D terminal 102 as a master. When the slave WLAN D2D terminal 102 does not recognize the master from the master WLAN D2D terminal 102, the slave wireless Switch to the LAN D2D terminal 203. At this time, the master WLAN that the master WLAN D2D terminal 102 has transferred is transferred to the master by setting the slave WLAN D2D terminal 203 to the same master IP.

Master switching when a line failure occurs in the master WLAN D2D terminal 102 will be described in detail with reference to FIG. 7.

FIG. 7 is a diagram illustrating a master switching timing when a line failure occurs in detail with reference to FIG. 6, and includes a WLAN D2D master ID signal S511 and a WLAN D2D master ID signal S512 transmitted from a master WLAN D2D terminal 104. On the basis of the standby (S521) transmitted from the slave WLAN D2D terminal 201, when a line failure of the master WLAN D2D terminal 100 occurs, the master WLAN D2D terminal 100 switches to the master WLAN D2D terminal 104. And the slave WLAN D2D terminal 200 is switched to the slave WLAN D2D terminal 204.

The master WLAN D2D terminal 104 indicates the master WLAN D2D terminal 102 and periodically transmits a WLAN D2D master ID signal S511. At this time, if the line of the master WLAN D2D terminal 104 causes a problem in the external input, the transmission of the WLAN D2D master ID signal (S512) is stopped and the slave WLAN D2D terminal 204 transmits the WLAN D2D master ID signal ( S512) to recognize the date of interruption and switch to the master WLAN D2D terminal 103.

The slave WLAN D2D terminal 204 indicates the slave WLAN D2D terminal 202 and periodically receives the WLAN D2D master ID signal S511. On the other hand, if the WLAN D2D master ID signal (S512) is not received through the waiting for a predetermined time (S521) performs a master IP switch (S522). Here, the master IP switch (S522) is switched using the master IP extracted from the WLAN D2D master ID signal (S511) and stored.

After completing the master switching, the slave WLAN D2D terminal 204 transmits the WLAN D2D master ID signal S523 to recognize that the slave WLAN D2D terminal 204 operates as the slave WLAN D2D terminal 203.

Next, a master switching operation when a board failure occurs in the controller 120 of the master WLAN D2D terminal 100 during the master switching after initialization will be described in detail with reference to FIGS. 8 to 9.

8 is a conceptual diagram of a master switching operation when a board failure occurs in the controller 120 of the master WLAN D2D terminal 100 of FIG. 1, and the master WLAN D2D terminal 105 with which the slave WLAN D2D terminal 205 communicates. When a problem occurs in a board of the master WLAN D2D terminal 105, a board failure is recognized and the slave WLAN D2D terminal 205 performs a master switching to the slave WLAN D2D terminal 206.

The master WLAN D2D terminal 105 is a master WLAN D2D terminal 100 that communicates with the slave WLAN D2D terminal 205 as a master, and a problem occurs in the control unit 120 to communicate with the slave WLAN D2D terminal 205. If this is not possible to recognize the board failure to switch to the master WLAN D2D terminal 106.

The slave WLAN D2D terminal 205 is a slave WLAN D2D terminal 200 that operates by recognizing the master WLAN D2D terminal 105 as a master. When the slave WLAN D2D terminal 105 does not recognize the master from the master WLAN D2D terminal 105, the slave wireless Switch to the LAN D2D terminal 206. At this time, the master IP held by the master WLAN D2D terminal 105 is transferred and the slave WLAN D2D terminal 206 is set to the same master IP to switch to the master.

The master switching when a board failure occurs in the master WLAN D2D terminal 105 will be described in detail with reference to timing in FIG. 9.

FIG. 9 is a diagram illustrating a master switching timing when a board failure occurs in the master WLAN D2D terminal of FIG. 8, the WLAN D2D master ID signal S611 transmitted by the master WLAN D2D terminal 107, and the master WLAN D2D terminal 100. When a board failure occurs, the master WLAN D2D terminal 100 is switched to the master WLAN D2D terminal 107 and the slave WLAN D2D terminal 200 is converted to the slave WLAN D2D terminal 207.

The master WLAN D2D terminal 107 indicates a master WLAN D2D terminal 105 and periodically transmits a WLAN D2D master ID signal S611. In this case, when the board of the master WLAN D2D terminal 107 fails and communication with the slave WLAN D2D terminal 207 is not possible, the WLAN D2D master ID signal S611 cannot be transmitted to the master WLAN D2D terminal 106. Let's switch.

The slave WLAN D2D terminal 204 indicates the slave WLAN D2D terminal 205 and periodically receives the WLAN D2D master ID signal S611. On the other hand, if the WLAN D2D master ID signal (S611) is not received through the waiting for a predetermined time (S621) performs a master IP switch (S622). Here, the master IP switching (S622) is switched using the master IP extracted and stored in the WLAN D2D master ID signal (S611).

After completing the master switching, the slave WLAN D2D terminal 207 transmits the WLAN D2D master ID signal S623 to recognize that the slave WLAN D2D terminal 207 operates as the slave WLAN D2D terminal 206.

FIG. 10 is a configuration diagram of a redundant WLAN D2D terminal connection of a WLAN D2D duplex terminal according to the second embodiment, and FIGS. 11 to 12 are schematic diagrams and a conceptual view for explaining FIG. 10 in detail.

Hereinafter, a WLAN D2D duplication terminal and a WLAN duplication method according to a second embodiment of the present invention will be described with reference to FIGS. 10 to 12.

First, referring to FIG. 10, FIG. 10 is a configuration diagram of a redundant WLAN D2D terminal connection of a WLAN D2D redundant terminal according to a second embodiment, and includes a master WLAN D2D terminal 108 and a slave WLAN D2D terminal 208. Duplicated wireless LAN consisting of a duplicated WLAN D2D terminal and a wireless LAN transceiver 1310 which is an external connection transceiver and a wireless LAN transceiver 2320 and a control unit 330 that controls the redundant WLAN D2D terminal 300 It is configured to be connected to the LAN D2D terminal 300.

The master WLAN D2D terminal 108 is the master WLAN D2D terminal 100 of the redundant WLAN D2D terminal and the slave WLAN D2D terminal 208 is the slave WLAN D2D terminal 200 of the redundant WLAN D2D terminal. The WLAN transceiver unit 1310 is connected to the control unit 120 of the master WLAN D2D terminal 108 and the WLAN transceiver unit 2320 is connected to the controller 220 of the slave WLAN D2D terminal 208. It is operated in redundancy. The controller 330 is to control the redundant WLAN D2D terminal 300 by the transceiver duplication, it may be configured as a single or duplication.

In the configuration of FIG. 10, since both the redundant WLAN D2D terminal and the redundant WLAN D2D terminal 300 are connected in redundancy, stable operation is possible even when a failure of the redundant WLAN D2D terminal occurs, and the redundant WLAN D2D terminal 300 is provided. Stable operation is possible even in the event of a failure of the WLAN transceiver unit 310 or WLAN transceiver unit 2 (320).

On the other hand, when the configuration is a single WLAN D2D terminal instead of the redundant WLAN D2D terminal 300, the configuration and detailed operation of the redundant WLAN D2D terminal will be described with reference to FIGS.

FIG. 11 is a diagram illustrating a single WLAN D2D terminal connection configuration of the WLAN D2D duplex terminal of FIG. 10, wherein the redundant WLAN D2D terminal consists of a master WLAN D2D terminal 109 and a slave WLAN D2D terminal 209, and an external connection. It consists of a single WLAN D2D terminal 500 composed of a transceiver 510 which is a transceiver and a control unit 520 that controls the single WLAN D2D terminal 500.

The master WLAN D2D terminal 109 is a master WLAN D2D terminal 100 of the redundant WLAN D2D terminal and the slave WLAN D2D terminal 209 is a slave WLAN D2D terminal 200 of the redundant WLAN D2D terminal. The WLAN transceiver 510 is connected to the controller 120 of the master WLAN D2D terminal 109 and the controller 220 of the slave WLAN D2D terminal 209 through the LAN switch 400 to operate in a redundant manner.

The controller 520 controls the single WLAN D2D terminal 500 and is configured as a single controller. However, the controller 520 is connected to the redundant WLAN D2D terminal by the LAN switch 400 and is redundantly operated. In order for the single WLAN D2D terminal 500 to operate in a redundant manner with the redundant WLAN D2D terminal, the redundant WLAN D2D terminal is a master IP and a slave WLAN D2D terminal (when the master WLAN D2D terminal 109 operates as a master). When the 209 operates as a master, the master IP must be the same. The single WLAN D2D terminal 500 is additionally connected to the same master IP without the distinction between the master WLAN D2D terminal 109 and the slave WLAN D2D terminal 209. And there is an advantage to operate.

The occurrence of a line failure with respect to the switching of the master is described in FIG. 12, for example.

12 is a conceptual diagram of master switching of a WLAN D2D duplex terminal for a single WLAN D2D terminal of FIG. 11, a duplicated WLAN D2D terminal including a master WLAN D2D terminal 110 and a slave WLAN D2D terminal 210, and It consists of a single WLAN D2D terminal 501 consisting of a wireless LAN transceiver 511 which is an external connection transceiver and a controller 521 in charge of controlling the single WLAN D2D terminal 501.

The master WLAN D2D terminal 110 is a master WLAN D2D terminal 109 of the redundant WLAN D2D terminal and the slave WLAN D2D terminal 210 is a slave WLAN D2D terminal 209 of the redundant WLAN D2D terminal. The WLAN transceiver 511 distinguishes IPs of the master WLAN D2D terminal 109 and the slave WLAN D2D terminal 210 to control the controller 120 of the master WLAN D2D terminal 110 and the slave WLAN D2D terminal ( It is connected to the control unit 220 of 210 to operate in a redundant.

The control unit 521 controls the single WLAN D2D terminal 501 and is configured as a single controller, but the redundant WLAN D2D is distinguished by distinguishing IPs of the master WLAN D2D terminal 109 and the slave WLAN D2D terminal 210. It is connected to the terminal with redundancy and operated as redundancy.

In order for a single WLAN D2D terminal 501 to access and operate with the same master IP without the distinction between the master WLAN D2D terminal 110 and the slave WLAN D2D terminal 210, the redundant WLAN D2D terminal is a master WLAN D2D. The master IP when the terminal 110 operates as a master and the master IP when the slave WLAN D2D terminal 210 operates as a master should be the same and the master when a radio path failure of the master WLAN D2D terminal 110 occurs. The master WLAN D2D terminal 110 operates as a slave and the slave WLAN D2D terminal 210 operates as a master by switching between a master WLAN and a slave between the WLAN D2D terminal 110 and the slave WLAN D2D terminal 210. .

Therefore, when the single WLAN D2D terminal 501 is connected to the slave WLAN D2D terminal 210 and connected with the same master IP, a separate WLAN D2D terminal 110 and the slave WLAN D2D terminal 210 are switched according to the switching. The advantage is that it can be operated without a conversion procedure.

13 is a diagram illustrating a redundant WLAN D2D terminal connection configuration of a WLAN D2D redundant terminal according to a third embodiment, and FIGS. 14 to 16 are conceptual diagrams and timing diagrams for describing FIG. 13 in detail.

Hereinafter, a WLAN D2D duplication terminal and a WLAN duplication method according to a third embodiment of the present invention will be described with reference to FIGS. 13 to 16.

First, referring to FIG. 13, FIG. 13 is a diagram illustrating a redundant WLAN D2D terminal connection configuration of a WLAN D2D redundant terminal according to a third embodiment, and operates as a redundant master WLAN D2D terminal 610 operating as a master and a slave. A redundant slave WLAN D2D terminal 1 620, a redundant slave WLAN D2D terminal 2 630, and a redundant slave WLAN D2D terminal 3 640 are connected.

The redundant master WLAN D2D terminal 610 integrally monitors the states of the redundant slave WLAN D2D terminal 1 620, the redundant slave WLAN D2D terminal 2 630, and the redundant slave WLAN D2D terminal 3 640. To control. The redundant master WLAN D2D terminal 610, the redundant slave WLAN D2D terminal 1 620, the redundant slave WLAN D2D terminal 2 630, and the redundant slave WLAN D2D terminal 3 640 are connected in a ring type. Even if any one of the connected lines fails, it is possible to monitor or control the status of the master through the bypass path.

At this time, even if a line failure occurs, the connection with the master is possible, so the master switching of the redundant master WLAN D2D terminal 610 is not performed. However, if a failure occurs in the redundant master WLAN D2D terminal 610 itself, the master in the redundant slave WLAN D2D terminal 1 (620), the redundant slave WLAN D2D terminal 2 (630), and the redundant slave WLAN D2D terminal 3 (640). Switching is required and master switching is achieved by the method described in FIG.

Meanwhile, FIG. 14 illustrates a configuration in which a WLAN D2D UE, which is not redundant, is connected instead of the redundant slave WLAN D2D UE3 640.

FIG. 14 is a diagram illustrating a connection configuration of a single WLAN D2D terminal of a WLAN D2D duplex terminal of FIG. 13, wherein a redundant master WLAN D2D terminal 1 611 acting as a master and a redundant slave WLAN D2D terminal 1 acting as a slave 1621. ), A redundant slave WLAN D2D terminal 2 (631), and a single slave WLAN D2D terminal 1 (650).

The redundant master WLAN D2D terminal 1 611 monitors the state by integrating the redundant slave WLAN D2D terminal 1 621, the redundant slave WLAN D2D terminal 2 631, and the single slave WLAN D2D terminal 1 650. And control. The redundant master WLAN D2D terminal 1 611, the redundant slave WLAN D2D terminal 1 621, the redundant slave WLAN D2D terminal 2 631, and the single slave WLAN D2D terminal 1 650 are connected in a ring shape. It should be possible to monitor or control the status of the master in the bypass path even if any one of the connected lines fails. However, since the single slave WLAN D2D terminal 1 650 communicates with one master IP, the redundant master WLAN D2D terminal 1 ( When the radio path failure of the 611 occurs, the redundant master WLAN D2D terminal 1 611 may not monitor or control the state of the single slave WLAN D2D terminal 1 650.

Therefore, it is preferable that the WLAN D2D terminal operating as a master receives the master IP of the redundant master WLAN D2D terminal 1 611 and uses the same master IP. In addition, even when a failure occurs in the redundant master WLAN D2D terminal 1 612 itself, the master switching is required in the redundant slave WLAN D2D terminal 1 621 and the redundant slave WLAN D2D terminal 2 631, which is described with reference to FIG. 8. The master switch is made by the method.

Next, a master switching in the case where a line failure occurs in the third embodiment will be described with reference to FIGS. 15 to 16 as an example.

First, FIG. 15 is a conceptual diagram of master switching in the multiplexed WLAN D2D terminal of FIG. 14. The redundant master WLAN D2D terminal 1 612 serving as a master, the redundant slave WLAN D2D terminal 1 622 operating as a slave, and the duplication. Slave WLAN D2D terminal 2 (632), and a single slave WLAN D2D terminal 1 (651).

The redundant master WLAN D2D terminal 1 612 monitors the state by integrating the redundant slave WLAN D2D terminal 1 622, the redundant slave WLAN D2D terminal 2 632, and the single slave WLAN D2D terminal 1 651. And control. The redundant master WLAN D2D terminal 1 612, the redundant slave WLAN D2D terminal 1 622, the redundant slave WLAN D2D terminal 2 632, and the single slave WLAN D2D terminal 1 651 are connected in a ring shape. It should be possible to monitor or control the state of the master by the bypass path even if any one of the connected lines fails. However, since the single slave WLAN D2D terminal 1 651 communicates with one master IP, the redundant master WLAN D2D terminal 1 ( When the radio path failure of 612 occurs, the redundant master WLAN D2D terminal 1 611 cannot monitor or control the state of the single slave WLAN D2D terminal 1 650.

When the radio path failure of the redundant master WLAN D2D terminal 1 612 occurs, the redundant master WLAN D2D terminal 1 612 recognizes that the single slave WLAN D2D terminal 1 651 is not provided with a redundant function in advance. The WLAN D2D UE2 632 recognizes the information connected to the single slave WLAN D2D UE1 651 in advance and performs master switching so that the redundant slave WLAN D2D UE2 632 switches to the master.

A switching timing diagram for this will be described in detail with reference to FIG. 16.

FIG. 16 is a master switching timing diagram of the multiplexed WLAN D2D terminal of FIG. 15, and the WLAN D2D master ID signal S711 and the WLAN D2D master ID signal S712 transmitted from the redundant master WLAN D2D terminal 1 613 are illustrated in FIG. ), A WLAN D2D master ID signal S713, a WLAN D2D master ID signal S714, and a WLAN D2D master transmitted from the WLAN D2D master ID signal S715 and the redundant slave WLAN D2D terminal 2 633. Based on the ID signal S723, the WLAN D2D master ID signal S724, and the WLAN D2D master ID signal S725, a redundant slave WLAN D2D when a radio path failure of the redundant master WLAN D2D terminal 1 612 occurs. Terminal 2 632 shows the process of switching to the master.

The redundant master WLAN D2D terminal 1 613 is the redundant master WLAN D2D terminal 1 612, the single slave WLAN D2D terminal 1 652 is the single slave WLAN D2D terminal 1 651, the redundant slave WLAN D2D terminal 1 623 denotes a redundant slave WLAN D2D terminal 1 622, and a redundant slave WLAN D2D terminal 2 633 denotes a redundant slave WLAN D2D terminal 2 632. In normal operation, the redundant master WLAN D2D terminal 1 613 periodically transmits the WLAN D2D master ID signal S711, the WLAN D2D master ID signal S712, and the WLAN D2D master ID signal S713. When the radio path failure of the redundant master WLAN D2D terminal 1 612 receiving the LAN D2D master ID signal S711 occurs, the signal of the WLAN D2D master ID signal S711 is transmitted to the single slave WLAN D2D terminal 1 652. It is not received. That is, the state monitoring of the single slave WLAN D2D terminal 1 652 is not possible in the redundant master WLAN D2D terminal 1 613. At this time, the redundant master WLAN D2D terminal 1 613 transmits the WLAN D2D master ID signal S714 to the redundant slave WLAN D2D terminal 1 623, but the WLAN D2D master to the redundant slave WLAN D2D terminal 2 633. The ID signal S715 is not transmitted.

The redundant slave WLAN D2D terminal 2 633 does not receive the WLAN D2D master ID signal S715 and performs a master IP switching operation S722 after waiting for a predetermined time (S721). Here, the master IP switching (S722) is switched using the master IP extracted and stored in the redundant master WLAN D2D terminal 1 (613).

After completing the master switching, the redundant slave WLAN D2D terminal 2 633 transmits the duplicated WLAN D2D master ID signal S723, the WLAN D2D master ID signal S724, and the WLAN D2D master ID signal S725 for duplication. It recognizes that the slave WLAN D2D terminal 2 633 operates as a master.

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 present invention can be used in a system in which a master WLAN D2D UE and a slave WLAN D2D UE of a WLAN are configured with redundancy and perform communication.

Claims

A master WLAN D2D terminal storing a master IP and connected to a slave WLAN D2D terminal; And

And a slave WLAN D2D terminal capable of storing the master IP and converting the master IP into the master IP.
The method of claim 1,

The master WLAN D2D terminal,

A storage unit for storing the master IP;

A wireless LAN transceiver for connecting to an external wireless LAN D2D terminal; And

And a controller connected to the slave WLAN D2D terminal and connected to a storage unit and a WLAN transceiver via an internal bus. 2.
The method of claim 2,

The storage unit,

Wireless LAN D2D duplex terminal, characterized in that for storing the master IP which is the IP of the wireless transceiver transceiver used by the master.
The method of claim 2,

The control unit,

In order to transmit that the master WLAN D2D UE is operating as a master, the WLAN D2D duplication terminal periodically transmits its own WLAN D2D master ID signal including the master IP to the slave WLAN D2D UE. .
The method of claim 1,

The slave WLAN D2D terminal,

A storage unit for storing the master IP;

A wireless LAN transceiver for connecting to an external wireless LAN D2D terminal; And

And a controller connected to the master WLAN D2D terminal and connected to a storage unit and a WLAN transceiver via an internal bus.
The method of claim 5,

The storage unit,

WLAN D2D duplex terminal, characterized in that for storing the master IP of the master WLAN D2D terminal delivered from the master WLAN D2D terminal.
The method of claim 5,

The control unit,

Recognizing that the master WLAN D2D terminal is operating by receiving an external WLAN D2D master ID signal including the master IP information of the master WLAN D2D terminal from the master WLAN D2D terminal, the master WLAN D2D terminal If not, the WLAN D2D duplex terminal, characterized in that for performing a master switching operation to the master IP.
A redundant master wireless LAN D2D terminal having at least two wireless LAN transceivers and operating as a master wireless LAN D2D terminal when configuring a multiplexed network; And

A redundant slave WLAN D2D terminal having at least two WLAN transceivers connected to the redundant master WLAN D2D terminal when the multiplexed network is configured and operating as a slave WLAN D2D terminal based on control of the redundant master WLAN D2D terminal; Wireless LAN D2D duplex terminal operating as any one of.
The method of claim 8,

The redundant master wireless LAN D2D terminal,

And a master IP indicating the IP of the redundant master WLAN D2D terminal.
The method of claim 8,

The redundant master wireless LAN D2D terminal,

In order to transmit that the redundant master WLAN D2D UE is operating as a master, the WLAN D2D periodically transmits its own WLAN D2D master ID signal including the master IP to the redundant slave WLAN D2D UE. Redundant terminal.
The method of claim 8,

The redundant master wireless LAN D2D terminal,

A WLAN D2D duplex terminal, comprising: a wireless LAN transceiver unit connected to a single slave WLAN D2D terminal operating as a slave WLAN D2D terminal under the control of the redundant master WLAN D2D terminal.
The method of claim 8,

The redundant slave WLAN D2D terminal,

And communicating with the redundant master wireless LAN D2D terminal to store the master IP of the redundant master wireless LAN D2D terminal.
The method of claim 8,

The redundant slave WLAN D2D terminal,

Receiving that the redundant master WLAN D2D terminal is operating by receiving an external WLAN D2D master ID signal including the master IP information of the redundant master WLAN D2D terminal from the redundant master WLAN D2D terminal, the redundant master radio If the LAN D2D terminal is not operating, the WLAN D2D duplex terminal, characterized in that performing a master switching operation to the master IP.
The method of claim 8,

The redundant slave WLAN D2D terminal,

A WLAN D2D duplex terminal, comprising: a wireless LAN transceiver unit connected to a single slave WLAN D2D terminal operating as a slave WLAN D2D terminal under the control of the redundant master WLAN D2D terminal.
An external WLAN D2D master ID signal receiving step for receiving an external WLAN D2D master ID signal to determine whether a master exists;

A master IP storing step of storing its own master IP when operating as a master and storing a master IP included in the external WLAN D2D master ID signal when operating as a slave;

A master switching step of performing a master switching using the master IP when the external WLAN D2D master ID signal is not received; And

And transmitting the own WLAN D2D master ID signal to transmit its own WLAN D2D master ID signal including the master IP after master switching. 2.