KR20140044967A - Apparatus and method for controlling a traffic in automatic meter reading system - Google Patents

Abstract

Provided are a device and a method for controlling traffics in a remote meter reading system to transmit packets through merge or joint distribution by merging or transforming the packets according to the periodic properties of the packets. The method for controlling traffics in a remote meter reading system comprises a step of sorting packets generated in an upper layer or received from an adjacent terminal into real-time packets and periodic packets by monitoring the packets; a step of storing packets which are sorted as periodic packets; a step of determining the merge or the joint distribution of the packets by analyzing the stored packets; a step of producing a single frame by merging merging target packets when the merge of the packets is determined; and a step of producing a frame with multiple destination addresses using identical packets among the joint distribution target packets when the joint distribution of the packets is determined. [Reference numerals] (120) Application layer(Logical Device-COSEM Application xDLMS); (140) Transport and network layer(HDLC, TCP/IP); (160) Network access layer(Ethernet, Wireless, PLC, etc); (200) Device for controlling traffics

Description

Apparatus and method for controlling traffic in remote metering system {APPARATUS AND METHOD FOR CONTROLLING A TRAFFIC IN AUTOMATIC METER READING SYSTEM}

The present invention relates to a traffic control device and method of a remote meter reading system, and more particularly, to a power system for performing communication with a terminal periodically and obtaining data, such as a remote meter reading system, based on a medium sharing communication system. The present invention relates to a traffic control apparatus and a method of a remote meter reading system for controlling traffic of a remote meter reading system.

Currently operating remote meter reading system collects meter reading information of electricity meter every 15 minutes (it can be changed according to electric company's policy). Since the existing system performs 1: 1 communication sequentially when communicating with the N electricity meters, as shown in FIG. 1, N × T takes time when communicating with the N electricity meters. This shows problems such as delay in collecting information of meter reading information and limiting the maximum allowable number of terminals according to delay in network configuration. In addition, when using a medium sharing method such as wireless or power line communication rather than a dedicated communication network such as an optical cable when configuring a remote meter communication network, when a channel is unstable and multiple terminals want to perform communication, a meter reading is collected according to the channel environment. There are problems such as an increased probability of error occurrence and a delay in collecting time.

In order to solve the above problems, Korean Patent No. 10-1092719 (name: parallel intelligent remote metering device and method) transmits and receives data in parallel to process information processed by a plurality of electricity meters in a short time. The technology to process at the same time is presented, and the technology for performing N: N simultaneous parallel metering process based on the multi-threaded method has been developed.

However, as shown in FIG. 2, the above-described techniques can reduce the measurement data collection time compared to the conventional method of performing the metering by the round-robin method, but the predefined communication when performing communication with the electricity meter The procedure for repeating the procedure on all meters is the same. In other words, assuming that Mkbps bandwidth is required for T time when communicating with a power meter, the conventional method requires Mkbps bandwidth for NT time, whereas the existing method requires N × Mkbps bandwidth for T time. Is required. In this case, when designing a communication network of a remote meter reading system that communicates with a plurality of electricity meters, a communication network capable of delivering high-speed data is required. For example, the current remote meter reading system collects meter reading information by communicating with a electricity meter at 0 minutes / 15 minutes / 30 minutes / 45 minutes. In this case, as shown in FIG. It is happening. The high bandwidth required at a specific time requires a high speed communication method when designing a remote meter communication network and selecting a communication technology.

The present invention has been proposed to solve the above-described problems, and the traffic control device of the remote meter reading system to transmit the packet through a common distribution or merging by merging or modifying the packet according to the characteristics of the packet having a periodic characteristic And to provide a method.

In order to achieve the above object, a traffic control apparatus of a remote meter reading system according to an embodiment of the present invention includes a packet monitoring unit for monitoring a packet generated in a higher layer or a packet received from a neighboring terminal and dividing it into a real time packet and a periodic packet. ; A queue for storing packets divided into periodic packets by the packet monitoring unit; A policy determination unit which analyzes the packets stored in the queue and determines whether to merge or share the packets; A packet merging unit for generating a frame by merging the merged packets when the policy decision unit determines that the packets are merged; And a common packet distribution unit configured to generate a frame having a plurality of destination addresses by using the same packets among the common distribution target packets when the policy decision unit determines the common distribution of the packets.

The packet monitoring unit classifies the real time packet and the periodic packet based on the header of the received packet.

The policy decision unit classifies the received packet into a merge target packet or a common distribution packet based on the header of the protocol including the received packet.

The policy decision unit classifies the received packet into a merge target packet or a common distribution target packet based on at least one of a protocol identifier, an IP address, and an HDLC address including the received packet.

The packet merging unit merges packets having the same destination address among packets divided into packets to be merged in the policy determination unit to generate one frame.

The packet common distribution unit sets a destination address of each of the same packets as a destination address of a protocol header to generate a frame having a plurality of destination addresses.

It further includes a measuring unit for measuring the residence time and size of the packet stored in the queue.

In order to achieve the above object, a traffic control method of a remote meter reading system according to an embodiment of the present invention includes a real time packet and a periodic packet by monitoring a packet generated at a higher layer or a packet received from an adjacent terminal by a packet monitoring unit. Dividing into; Storing, by the queue, packets divided into periodic packets in the sorting step; Analyzing, by the policy determining unit, the stored packets to determine whether to merge or share the packets; Generating, by the packet merging unit, one frame by merging packets to be merged when determining that the packet is merged in the determining step; And generating, by the packet common distribution unit, a frame having a plurality of destination addresses using the same packets among the common distribution target packets when the common distribution of the packets is determined in the determining step.

In the step of classifying the real time packet and the periodic packet, the packet monitoring unit classifies the real time packet and the periodic packet based on the header of the received packet.

In the determining step, the policy determining unit classifies the received packet into a merge target packet or a common distribution packet based on the header of the protocol including the received packet.

In the determining step, the policy determining unit classifies the packet into a merge target packet or a common distribution target packet based on at least one of the identifier, the IP address, and the HDLC address of the protocol including the received packet.

In the step of merging packets to be merged to generate one frame, the packet merging unit merges packets having the same destination address among packets divided into packets to be merged by the policy decision unit to generate one frame.

In the step of generating a frame having a plurality of destination addresses, the packet common distribution unit sets a destination address of each of the same packets as a destination address of the protocol header to generate a frame having a plurality of destination addresses.

Generating a frame having a plurality of destination addresses includes: receiving, by the packet common distribution unit, common distribution target packets; Detecting, by the packet common distribution unit, identical packets among the received common distribution target packets; Detecting, by the packet common distributing unit, destination addresses of the detected identical packets; And generating a frame by setting the detected destination addresses as destination addresses of the header by the packet common distribution unit.

The measuring unit further includes the step of measuring the residence time and size of the packet stored in the queue.

According to the present invention, the traffic control apparatus and method of the remote meter reading system merges or modifies the packets according to the characteristics of the packets having periodic characteristics and transmits the packets through common distribution or merging, thereby preventing traffic congestion in the power system. Prevents and effectively manages bandwidth.

In addition, the traffic control device and method of the remote metering system checks the communication channel state information of the frame that has been generated through the packet merging unit or the packet common distributing unit and transmits the packet to the neighboring terminal, thereby reducing the number of traffic transmission and effectively communicating the bandwidth. It is effective to manage.

In addition, the traffic control device and method of the remote meter reading system can identify the packet traffic characteristics having a periodic nature, and has an address table for managing the address of the neighboring terminal, which is managed in the address table when packet monitoring is performed. It may be used to capture a packet corresponding to the terminal.

1 to 3 are diagrams for explaining a conventional traffic control method.
4 is a diagram for explaining packet generation in a remote meter reading system.
5 is a view for explaining a communication process for collecting the meter data of the remote meter reading system.
6 is a view for explaining a traffic control apparatus of a remote meter reading system according to an embodiment of the present invention.
7 is a block diagram for explaining the configuration of the traffic control apparatus of FIG.
FIG. 8 is a diagram for explaining a packet merger of FIG. 7. FIG.
9 is a flowchart illustrating a traffic control method of a remote meter reading system according to an embodiment of the present invention.
FIG. 10 is a flowchart for explaining a step of generating a frame using the common distribution packet of FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to facilitate a person skilled in the art to easily carry out the technical idea of the present invention. . In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

First, prior to explaining the embodiment of the present invention will be described in detail with reference to the accompanying drawings the communication process of a general remote meter reading system as follows. 4 is a view for explaining packet generation of a remote meter reading system, Figure 5 is a view for explaining a communication process for collecting the meter data of the remote meter reading system.

In general, the remote meter reading system periodically collects meter reading data based on IEC62056 (DLMS). At this time, as shown in Figure 4, the remote meter reading system to periodically obtain the meter reading information is composed of the application layer 120, the transmission and network layer 140, the network connection layer 160. The application layer 120 generates DLMS / COSEM data, and in the transport and network layer 140, the DLMS / COSEM data generated by the application layer 120 is a protocol identifier (SAP ID or Protocol) of a higher layer. Type), IP address, port number, and HDLC upper / lower address to form a packet. The packet configured as described above is transmitted to the neighboring terminal via the network access layer 160.

In addition, when data is generated through the application layer 120, transport and network layer 140, the connection establishment (SNRM) and response (UA), App-side connection establishment (AARQ) and according to the connection procedure defined in the IEC62056 standard and Packets such as AARE, Data Request (Get Req.) And Response (Get Res.), Termination (DISC), and Response (UA) are generated. Subsequently, as shown in FIG. 5, the generated packet performs communication between the data transmission apparatus and the electronic electricity meter according to a predefined connection procedure, thereby acquiring power usage information held by the electricity meter.

From the point of view of a communication network, when a data transmission device communicates with N power meters, the data transmission device repeatedly performs the same process N times for data acquisition. N meters are operated by sending information to a single data transmission device at the same time. In this case, in a communication method using a shared medium, a problem such as collision occurs.

Accordingly, in order to solve the above problems and to improve efficiency in the case where a plurality of terminals periodically perform repeated data transmission and reception and data is transmitted to one destination, the present invention uses a resource management module. An apparatus and method for controlling the number of packet transmissions and transmitting data through merge or common distribution are provided.

Hereinafter, a traffic control device of a remote meter reading system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 6 is a view for explaining a traffic control apparatus of a remote meter reading system according to an embodiment of the present invention. FIG. 7 is a block diagram illustrating a configuration of the traffic control apparatus of FIG. 6, and FIG. 8 is a diagram for explaining a packet merger of FIG. 7.

As shown in FIG. 6, the traffic control apparatus 200 of the remote meter reading system is connected to the transmission and network layer 140 and the network connection layer 160 of the remote meter reading system and generated from a packet generated from an upper layer or an adjacent terminal. Monitor the received packet, store the packet with periodic transmission characteristics in the queue 220, determine whether to deliver the packet through common distribution or merging according to the characteristics of the packet, and then merge or common distribution the packets for transmission. do.

To this end, as shown in FIG. 7, the traffic control apparatus 200 of the remote metering system includes a packet monitoring unit 210, a queue 220, a measurement unit 230, a policy determination unit 240, and a packet merger ( 250, the packet common distribution unit 260 is configured.

The packet monitoring unit 210 monitors a packet generated in an upper layer or a packet received from an adjacent terminal. At this time, the packet monitoring unit 210 determines the packet as a real time packet or a periodic packet (that is, a packet having a periodic transmission characteristic) based on the header (or delimiter) of the protocol. In this case, the packet monitoring unit 210 stores the packet determined as a periodic packet in the queue 220. For example, in the remote meter reading system using IEC62056, the packet monitoring unit 210 has a header (or delimiter) of the protocol SNRM, AARQ, Get. A packet such as Req, DISC UA, AARE, Get, Res, etc. is stored in the queue 220.

The queue 220 stores the packet determined by the packet monitoring unit 210 as a periodic packet. For example, for a telemetering system using IEC62056, queue 220 has a header (or delimiter) of the protocols SNRM, AARQ, Get. Stores packets such as Req, DISC, UA, AARE, Get, Res, etc.

The queue 220 detects the packet to be merged and transmits the packet to the packet merger 250 according to a request of the policy decision unit 240 to be described later, and detects the packet to be distributed to the packet common distribution unit 260. send. In this case, the queue 220 may delete the packets transmitted to the packet merger 250 or the packet common distributor 260.

The measurement unit 230 measures the residence time of the packet stored in the queue 220. The measurement unit 230 transmits the measured residence time to the policy decision unit 240. Through this, the measurement unit 230 minimizes data delay by performing packet merging or common distribution only within a desired time. Here, the residence time of the packet is determined according to system requirements, characteristics of the transmission medium, and the like.

The measurement unit 230 measures (calculates) the size of a packet stored in the queue 220. That is, since there is a maximum transmittable packet size according to the modem at the time of packet merging, the measurement unit 230 measures the size of the packet stored in the queue 220, and can configure the transmittable packet size (or one packet). Size) is stored, and transmits a packet merge request to the policy decision unit 240. Here, the size of the packet is determined according to system requirements, characteristics of the transmission medium, and the like.

The policy determiner 240 analyzes the packets accumulated in the queue 220 for a predetermined time to determine whether to merge or share the packets. Here, the policy decision unit 240 determines whether to merge or common distribution of packets based on the header of the protocol. That is, the policy decision unit 240 divides the packet stored in the queue 220 into a merge target packet or a common distribution target packet based on a protocol delimiter or an IP address (or HDLC address, etc.) to merge or share the packets. Determine. Here, the policy determiner 240 may determine whether to merge or common distribution of packets at the request of the measurer 230.

To this end, the policy determiner 240 divides the packet stored in the queue 220 into a merge target packet or a common distribution target packet based on a protocol identifier or an IP address (or HDLC address, etc.). For example, in the case of a remote meter reading system using IEC62056, the policy decision unit 240 is SNRM, AARQ, Get. Packets such as Req and DISC are divided into common distribution target packets and divided into common distribution target packets, and packets such as UA, AARE, Get, and Res destined for one destination are classified into merge target packets.

The policy decision unit 240 requests the queue 220 to transmit the merge target packet to the packet merger 250 when the packet decision unit 240 determines to merge the packets. That is, the policy decision unit 240 requests the queue 220 to transmit the packets classified as merge target packets to the packet merger 250.

The policy decision unit 240 requests the queue 220 to transmit the common distribution target packet to the packet common distribution unit 260 when the packet is determined to be the common distribution of the packets. That is, the policy decision unit 240 requests the queue 220 to transmit the packets divided into the common distribution target packet to the packet common distribution unit 260.

The packet merger 250 generates merge target packets received from the queue 220 into one frame according to a request of the policy determiner 240. That is, when the packets received from the plurality of communication terminals are directed to one destination, the packet merger 250 merges the packets to generate one frame. For example, as shown in FIG. 8, it is assumed that the master data transmission device 320 communicates with N power meters 420 installed in the customers 400. The master data transmission device 320 requests transmission of meter reading data to the plurality of N power meters 420 through the slave data transmission device 340. Accordingly, the N power meters 420 transmit meter reading data to the slave data transmission device 340. The slave data transmitter 340 collects the meter data received from the N power meters 420 and transmits the collected meter data to the master data transmitter 320. In this case, when the N data received from the electricity meters 420 through the packet merger 250 installed in the slave data transmission device 340 is generated in one frame, the master data transmission device 320 and the slave data are generated. The communication efficiency between the transmitters 340 is improved.

The packet common distribution unit 260 generates a frame for common distribution of packets that are identical among the common distribution target packets received from the queue 220 but delivered to a plurality of destinations at the request of the policy decision unit 240. do. The packet common distribution unit 260 deletes packets other than packets generated as frames among duplicate packets. To this end, the packet common distribution unit 260 detects the same packets among the common distribution target packets received from the queue 220 at the request of the policy decision unit 240. The packet common distribution unit 260 detects destination addresses of the detected identical packets. The packet common distribution unit 260 generates a frame by setting the destination addresses detected in the same packet as the destination address of the header. That is, the packet common distribution unit 260 sets the destination address of the header portion of the newly generated frame using the common distribution target packets as the multicast address. The packet common distribution unit 260 deletes packets other than packets generated as frames among duplicate packets.

Hereinafter, a traffic control method of a remote meter reading system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 9 is a flowchart illustrating a traffic control method of a remote meter reading system according to an exemplary embodiment of the present invention, and FIG. 10 is a flowchart illustrating a step of generating a frame using the common distribution packet of FIG. 9.

First, the packet monitoring unit 210 monitors the received packet and classifies it into a periodic packet and a real time packet (S100). The packet monitoring unit 210 divides the packet into a real time packet or a periodic packet (that is, a packet having a periodic transmission characteristic) based on the header (or delimiter) of the protocol.

The packet monitoring unit 210 requests the queue 220 to store packets divided into periodic packets. Accordingly, the queue 220 stores the packet (S200). For example, in the remote meter reading system using IEC62056, the packet monitoring unit 210 has a header (or delimiter) of the protocol SNRM, AARQ, Get. A packet such as Req, DISC UA, AARE, Get, Res, etc. is stored in the queue 220.

The policy determiner 240 analyzes the packets stored in the queue 220 and determines whether the packets are merged or shared. That is, the policy determination unit 240 analyzes the packets accumulated in the queue 220 for a predetermined time to determine whether to merge or common distribution of the packets. Here, the policy decision unit 240 determines whether to merge or common distribution of packets based on the header of the protocol. That is, the policy decision unit 240 divides the packet stored in the queue 220 into a merge target packet or a common distribution target packet based on a protocol delimiter or an IP address (or HDLC address, etc.) to merge or share the packets. Determine. In this case, the policy determination unit 240 may determine whether to merge or common distribution of packets at the request of the measurement unit 230. That is, the measurement unit 230 determines whether to merge or common distribution of packets at the request according to the result of the measurement of the residence time or size of the packets stored in the queue 220.

Here, the policy decision unit 240 divides the packet stored in the queue 220 into a merge target packet or a common distribution target packet based on a protocol identifier or an IP address (or HDLC address, etc.).

If it is determined that the packet is merged (S300; YES), the policy decision unit 240 requests the packet merger 250 to merge the packet. That is, the policy decision unit 240 requests the queue 220 to transmit the merged packet to the packet merger 250 when the packet decision unit 240 determines to merge the packets. Accordingly, the queue 220 detects the merge target packet and transmits the packet to the packet merger 250. The packet merger 250 generates a frame using the received merge target packet (S400). The packet merger 250 generates merge target packets received from the queue 220 into one frame according to a request of the policy determiner 240. That is, when the packets received from the plurality of communication terminals are directed to one destination, the packet merger 250 merges the packets to generate one frame.

When the policy decision unit 240 determines that the packets are in common distribution, the policy determination unit 240 requests the common distribution of the packets to the common distribution unit 260. Accordingly, the queue 220 detects the common distribution target packet and transmits it to the packet common distribution unit 260. The packet common distribution unit 260 generates a frame using the received common distribution target packet (S500). That is, the packet common distribution unit 260 is the same packet among the common distribution target packets received from the queue 220 according to the request of the policy decision unit 240, but a frame for common distribution at the same time delivered to a plurality of destinations Create The packet common distribution unit 260 deletes packets other than packets generated as frames among duplicate packets. This will be described below in more detail with reference to the accompanying drawings.

First, the packet common distribution unit 260 receives common distribution target packets from the queue 220 (S510), and detects identical packets among the received common distribution target packets (S520).

The packet common distribution unit 260 detects destination addresses of the detected identical packets (S530). That is, the packet common distribution unit 260 detects destination addresses of the detected identical packets. The packet common distribution unit 260 deletes only one destination address duplicated from the detected destination address.

The packet common distribution unit 260 generates a frame by setting the destination addresses detected in the same packet as the destination address of the header (S540). That is, the packet common distribution unit 260 sets the destination address of the header portion of the newly generated frame using the common distribution target packets as the multicast address.

The packet common distribution unit 260 deletes packets other than packets generated as frames among the duplicated packets (S550).

Thereafter, the pre-generated frame is transmitted to the destination through the network access layer 160 of the remote meter reading system (S600).

As described above, the apparatus and method for controlling traffic of a remote meter reading system relates to a power system for performing repetitive communication using a shared medium, and can be applied to a distribution automation / remote meter reading / integrated meter reading system. The above system applies strict standards for reliability and communication success rate compared to the existing commercial service, but the traffic is concentrated at a specific time due to the system characteristic of periodically acquiring data, and communication due to channel acquisition competition with neighboring terminals There is a high possibility of error. This situation is pointed out as a problem of low communication success rate. As an alternative to this, a communication method capable of high-speed large-capacity information transmission is selected, but this has a problem of increasing construction cost.

Accordingly, the present invention manages the traffic by using the packet merging and the common packet distribution function through the traffic control device and method of the remote meter reading system, thereby establishing a reliable power information transmission system. When applying the present invention based on the IEC 62056-based remote metering currently being built in KEPCO, in order to collect the metering data at one time in one cell (normally 100EA electricity meter), at least 800 data transmission and reception should be performed. When the invention is applied, only up to 404 data transmission / reception may be performed and thus an efficiency of more than 49% may be obtained. In particular, in the communication network using the channel sharing method, as the number of data transmissions is significantly reduced, not only can the communication success rate be increased, but also the meter collection time can be shortened. While a high speed communication method was required to configure the existing remote meter reading system through the present invention, an effective remote metering system can be established and a system construction cost can be reduced even at a low speed communication method.

In addition, the traffic control device and method of the remote meter reading system by merging or modifying the packet according to the characteristics of the packet having a periodic characteristic to transmit the packet through common distribution or merging, thereby preventing the occurrence of traffic congestion in the power system, Effectively manage bandwidth.

In addition, the traffic control device and method of the remote metering system checks the communication channel state information of the frame that has been generated through the packet merging unit or the packet common distributing unit and transmits the packet to the neighboring terminal, thereby reducing the number of traffic transmission and effectively communicating the bandwidth. It is effective to manage.

In addition, the traffic control device and method of the remote meter reading system can identify the packet traffic characteristics having a periodic nature, and has an address table for managing the address of the neighboring terminal, which is managed in the address table when packet monitoring is performed. It may be used to capture a packet corresponding to the terminal.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but many variations and modifications may be made without departing from the scope of the present invention. It will be understood that the invention may be practiced.

120: application layer 140: transport and network layer
160: network access layer 200: traffic control device
210: packet monitoring unit 220: queue
230: measurement unit 240: policy decision unit
250: packet merger 260: common packet divider
320: master data transmission device 340: slave data transmission device
400: customer 420: electricity meter

Claims (15)

A packet monitoring unit configured to monitor a packet generated in an upper layer or a packet received from an adjacent terminal and divide the packet into a real time packet and a periodic packet;
A queue for storing packets divided into periodic packets by the packet monitoring unit;
A policy determination unit which analyzes the packets stored in the queue and determines whether to merge or share the packets;
A packet merging unit for merging packets to be merged to generate one frame when the policy decision unit determines that the packets are merged; And
And a packet common distribution unit for generating a frame having a plurality of destination addresses by using the same packets among the common distribution target packets when the policy determination unit determines the common distribution of the packets. . The method according to claim 1,
The packet monitoring unit,
A traffic control device of a remote meter reading system, characterized in that the real-time packet and the periodic packet is classified based on the header of the received packet. The method according to claim 1,
Wherein the policy determination unit determines,
And the received packet is classified into a merge target packet or a common distribution packet based on a header of a protocol including the received packet. The method according to claim 1,
Wherein the policy determination unit determines,
And the received packet is classified into a merge target packet or a common distribution target packet based on at least one of a delimiter, an IP address, and an HDLC address of a protocol including the received packet. The method according to claim 1,
The packet merging unit,
The apparatus for controlling traffic of a remote meter reading system according to claim 1, wherein the policy decision unit generates one frame by merging packets having the same destination address among packets divided into packets to be merged. The method according to claim 1,
The packet common distribution unit,
And setting a destination address of each of the same packets as a destination address of a protocol header to generate a frame having a plurality of destination addresses. The method according to claim 1,
The traffic control device of the remote meter reading system further comprises a measuring unit for measuring the residence time and size of the packet stored in the queue. Monitoring, by the packet monitoring unit, a packet generated in an upper layer or a packet received from an adjacent terminal and divided into a real time packet and a periodic packet;
Storing, by the queue, packets separated into periodic packets in the sorting step;
Analyzing, by the policy determining unit, the stored packets to determine whether to merge or share the packets;
Generating a frame by merging packets to be merged when the packet merging unit determines that the packet is merged in the determining step; And
Generating a frame having a plurality of destination addresses by using the same packets among the packets to be shared, if the packet is shared by the packet common distribution unit. How to control traffic on your system. The method according to claim 8,
In the step of dividing into the real time packet and the periodic packet,
And the packet monitoring unit classifies the real-time packet and the periodic packet based on the header of the received packet. The method according to claim 8,
In the determining step,
And, by the policy decision unit, classify the received packet into a merge target packet or a common distribution packet based on a header of a protocol including the received packet. The method according to claim 8,
In the determining step,
And the policy determining unit classifies the received packet into a merge target packet or a common distribution target packet based on at least one of a delimiter, an IP address, and an HDLC address of a protocol including the received packet. Traffic control method. The method according to claim 8,
In the generating of one frame by merging the merging target packets,
And generating, by the packet merging unit, one frame by merging packets having the same destination address among packets divided into packets to be merged by the policy decision unit. The method according to claim 8,
In the step of generating a frame having the plurality of destination addresses,
And generating a frame having a plurality of destination addresses by setting destination addresses of the same packets as destination addresses of a protocol header by the packet common distribution unit. The method according to claim 8,
Generating a frame having the plurality of destination addresses,
Receiving, by the packet common distribution unit, common distribution target packets;
Detecting, by the packet common distribution unit, identical packets among the received common distribution target packets;
Detecting destination addresses of the detected identical packets by the packet common distribution unit;
And generating, by the packet common distribution unit, a frame by setting the detected destination addresses as destination addresses of a header. The method according to claim 8,
And measuring, by a measuring unit, a dwell time and a size of a packet stored in the queue.

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