KR100724680B1 - Performance meansurement apparatus of transfering packet and method thereof - Google Patents

Abstract

The present invention relates to a packet transmission quality measurement system and method thereof.

The packet transmission quality measurement system of the present invention includes a detection device for generating a specific message that records the information necessary for the transmission quality measurement of the first packet by detecting a predetermined first packet among the packets transmitted and received by the subscriber station; And a quality evaluation device configured to set the detection device to detect the first packet according to a transmission quality measurement request of the network management system, and to measure the transmission quality based on a specific message received from the detection device.

According to the present invention, the packet transmission quality measurement system detects a packet of a subscriber terminal actually used, generates a plurality of detected information as a specific record data message, and transmits it to a quality evaluation apparatus, thereby providing traffic according to transmission quality measurement. Can be significantly reduced, and effective packet transmission quality information can be expected by comparing the recorded data messages detected by the two packet detection apparatuses.

Transmission quality measurement, packet detection, packet loss rate, packet transmission delay, packet transmission jitter

Description

Packet transmission quality measurement system and its method {PERFORMANCE MEANSUREMENT APPARATUS OF TRANSFERING PACKET AND METHOD THEREOF}

1 is a block diagram illustrating a packet transmission quality measuring system according to an exemplary embodiment of the present invention.

2 is a block diagram illustrating a packet detection apparatus according to an exemplary embodiment of the present invention.

3 is a block diagram showing a quality evaluation apparatus according to an embodiment of the present invention.

4 is a block diagram illustrating a write data message according to an embodiment of the present invention.

5 is a flowchart illustrating a method of measuring a transmission quality of a specific packet in a packet transmission quality measuring system according to an exemplary embodiment of the present invention.

The present invention relates to a system and method for measuring packet transmission quality, and more particularly, to a system and method for measuring the quality of packet transmission between two designated subscriber stations in an IP-based communication network.

Packet transmission quality is a measure of packet loss rate, packet transmission delay, packet transmission jitter, etc., and is measured using a ping test or using a measurement system.

As a conventional packet traffic measurement technique using the Ping test, Korean Patent Publication No. 2001-0103247 includes "Method and Apparatus for Measuring Traffic in an Internet Protocol Network". This conventional technique measures the time to each router by using the traceroute function and the ping recommended by ITFT and transmits it to the server, and the server analyzes the measured data and analyzes the traffic volume of each section. By generating statistical data by calculating and providing the generated data to the network manager, a technique for improving the transmission quality of an IP network by bypassing a place where there is a lot of traffic is disclosed.

In addition, Korean Patent Publication No. 2004-0082032 discloses a conventional method for measuring transmission quality using a measurement system, which is a "web-based end-to-end VoIP quality measurement method in high-speed Internet service". This conventional technology not only selects the codec and the number of packet transmissions to be measured, but also the test server connected to the backbone with the measurement server, as well as the entire subscriber list accommodated in various subscriber network environments and simultaneously logged in. By making it selectable as a measurement target, a technique capable of measuring simulated VoIP transmission quality by various measurement environments and network configuration environments in an entire ISP network is disclosed.

On the other hand, the conventional techniques, such as in the case of the ping test, the most commonly used method for measuring the quality of the transmission of the test packet, but the reliability to the subscriber is low because it is not measuring the actual packet transmission quality experienced by the subscriber . In addition, when analyzing the actual packet of the subscriber by installing the measurement system, it is used to analyze the traffic volume and traffic characteristics of the network and to conduct simulation traffic experiments, rather than to measure the quality of the subscriber packet. There is a problem that is difficult to do.

Accordingly, an object of the present invention is to provide a system and method for measuring the quality of packet transmission between two designated subscriber stations in an IP based communication network.

According to a first aspect of the present invention for solving the above technical problem, a packet transmission quality measurement system connected to a network management system for managing a network to transmit and receive data, and measures the transmission quality of packets transmitted and received by a subscriber station In
A detection device for detecting a predetermined first packet among the packets transmitted and received by the subscriber station and generating a specific message in which information necessary for measuring transmission quality of the first packet is recorded; And a quality evaluation device configured to set the detection device to detect the first packet according to a transmission quality measurement request of the network management system, and to measure the transmission quality based on the specific message received from the detection device.

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The specific message may include: a first message extracting the first packet transmitted from the subscriber station and recording information necessary for measuring transmission quality of the first packet; And a second message extracting the first packet received from the subscriber station and recording information necessary for measuring transmission quality of the first packet.

In addition, the measured packet transmission quality includes packet loss rate, packet transmission delay, and packet transmission jitter.

According to a second aspect of the present invention, a message processing method of a packet detection apparatus for detecting and transmitting at least two or more specific packets transmitted and received between a first subscriber station and a second subscriber station,
a) receiving and storing setting information from the quality evaluation apparatus; b) detecting a first packet of the packets based on the setting information, and storing information necessary for transmission quality measurement from the detected first packet; c) generating a specific message based on the stored information when the information necessary for measuring the stored transmission quality satisfies a preset number; And d) sending the generated specific message to the device.

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In this case, the specific message includes a flow ID, a packet number, a first packet arrival time, a serial number, a packet arrival interval, and flow information.

According to a third aspect of the present invention, a quality measurement method of a quality evaluation apparatus for performing data transmission / reception with a specific network management system and a first packet detection apparatus for detecting a specific packet and a second detection apparatus,
The quality measurement method of the network management system which manages a network, the quality estimation apparatus which transmits / receives data with the detection apparatus which detects a specific packet,
a) transmitting setting information to the detection device according to a packet transmission quality measurement request of the network management system; b) receiving, from the detection apparatus, a first message including information necessary for measuring transmission quality according to detection of the first packet transmitted by a subscriber station based on the configuration information; c) receiving, from the detection apparatus, a second message including information necessary for measuring transmission quality according to the detection of the first packet received by the subscriber station based on the configuration information; And d) comparing the received first message with a second message to measure a packet transmission quality and transmitting the measured information to the network management system.

Here, the first message and the second message include a flow ID (Flow-ID), the number of packets, the arrival time of the first packet, the serial number, the packet arrival interval, and the flow information.

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Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, except to exclude other components unless otherwise stated.

In addition, the term module described herein refers to one unit for processing a specific function or operation, which may implement hardware or software or a combination of hardware and software.

Now, a packet transmission quality measuring system and method thereof according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a packet transmission quality measuring system according to an exemplary embodiment of the present invention.

As shown in FIG. 1, the packet transmission quality measuring system according to an embodiment of the present invention detects a specific packet transmitted and received at the subscriber station 100 to obtain information necessary for measuring transmission quality, and based on the obtained information, packet transmission quality. Measure In addition, the packet transmission quality measurement system includes a packet detection device, a quality evaluation device and a network management system.

The packet detecting system (PS) 200 extracts the specific packet transmitted and received by the subscriber station 100 to generate a record data message that records information necessary for measuring transmission quality, and evaluates the generated record data message. Send to device (PES) 300. Here, the packet detection apparatus 200 may be implemented by being included in a router or a subscriber station.

 Here, the flow summary data (FSD) is a first record data message and a subscriber terminal 100 that detects a plurality of specific packets received by the subscriber terminal 100 and records information necessary for measuring transmission quality of the specific packet. And a second recording data message that detects a plurality of specific packets transmitted from the second packet and records information necessary for measuring a transmission quality of the specific packet. The first recording data message and the second recording data message include a flow ID (Flow-ID), It includes the number of packets, the first packet arrival time, the serial number, the packet arrival interval, and flow information.

The recording data message will be described in detail with reference to FIG.

The Performance Evaluation System (PES) 300 selects the packet detection apparatuses 200-1 and 200-3 according to a transmission quality measurement request of the PMMS 400 to detect specific packets. Request setting and measure packet transmission quality based on the recording data messages received from the packet detection apparatuses 200-1, 200-3 according to the request and transmit the packet transmission quality to the network management system (PMMS) 400. . Herein, the specific packet is a packet that satisfies a predetermined value included in specific subscriber flow information, wherein the subscriber flow information includes a source IP address and a destination IP address included in an IPv4 or IPv6 packet header. Destination IP Address), Protocol and Service Type in IPv4 Packet Header, Traffic Class in IPv6 Packet Header, Source Port and Destination Port in TCP or UDP Packet Header Says set information.

In this case, the measured packet transmission quality includes a packet loss rate, a packet transmission delay, and a packet transmission jitter.

The packet loss rate is measured by using a lost packet which is reported only to the first recorded data message of the first packet detecting apparatus 200-1 and not reported to the second recorded data message of the second packet detecting apparatus 200-3. Loss rate.

The packet transmission delay refers to the difference between the passing times recorded in each first write data message and second write data message for the same packet.

Packet transmission jitter constrains variation in packet transmission delay.

The Performance Measurement Management System (PMMS) 400 requests the quality estimation apparatus 300 to measure transmission quality of a specific packet and receives measured packet transmission quality information.

Such a packet transmission quality measurement system can measure an efficient packet transmission quality using a packet detection device and a quality evaluation device, and has the advantage of minimizing traffic by minimizing the amount of data exchanged between systems.

2 is a block diagram illustrating a packet detection apparatus according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the packet detection apparatus 200 according to an exemplary embodiment of the present invention extracts a specific packet transmitted and received from the subscriber station 100 to generate a specific message that records information necessary for measuring transmission quality of the specific packet. Packet detection module 208, message generation module 202, communication module 206, storage module 210, and configuration module 204.

The packet detection module 208 extracts a specific packet transmitted and received by the subscriber station 100 to obtain information necessary for measuring transmission quality. Here, the specific packet refers to a packet that satisfies a predetermined value included in specific subscriber flow information, and the subscriber flow information includes a source IP address and a destination IP address included in an IPv4 or IPv6 packet header. Address), the protocol and service type in the IPv4 packet header, the traffic class in the IPv6 packet header, and the source and destination ports in the TCP or UDP packet header satisfy the predefined values. Say information.

The storage module 210 stores the information obtained by the packet detection module 208.

The message generating module 202 generates a recording data message based on information necessary for measuring at least two or more specific packet transmission quality stored in the storage module 210. At this time, the generated record data message will be described in detail with reference to FIG.

The setting module 204 sets the packet detection module 208 and the message generating module 202 according to the setting request received from the quality evaluation apparatus 300, and manages the storage module 210.

The communication module 206 is controlled by the configuration module 204 to connect with a network including a specific communication interface. At this time, the communication module 206 transmits and receives data with the quality evaluation apparatus 300 through a network.

The packet detecting apparatus extracts a specific packet according to the setting request information received from the quality evaluating apparatus, generates a specific record data message based on the extracted plurality of specific packets, and transmits the specific recording data message to the quality evaluating apparatus, thereby not a test packet. By using the packet being used by the user, it is possible to increase the accuracy of the quality measurement result and to minimize the traffic due to the packet transmission.

3 is a block diagram showing a quality evaluation apparatus according to an embodiment of the present invention.

As illustrated in FIG. 3, the apparatus for evaluating quality according to the embodiment of the present invention specifies packet transmission quality based on recording data messages received from the packet detection apparatuses 200-1 and 200-3. PS) includes a setting module 306, a quality measuring module 304, a storage module 310, a control module 308, and a communication module 302.

The packet detecting apparatus setting module 306 selects the packet detecting apparatuses 200-1 and 200-3 based on the transmission quality measurement request of the network management system (PMMS) 400, and selects the selected packet detecting apparatus 200-. 1, 200-3) to detect a specific packet.

The quality measuring module 304 measures the quality according to packet transmission based on the recording data messages received from the packet detection apparatuses 200-1 and 200-3, and transmits the measured quality information to the network management system 400. do.

The storage module 310 stores the recording data messages received from the packet detection apparatuses 200-1 and 200-3, and stores the quality information according to the measured packet transmission.

The control module 308 controls and manages the packet detecting apparatus setting module 306, the quality measuring module 304, and the storage module 310 based on the transmission quality measurement request of the network management system 400.

The communication module 302 is controlled by a control module and is connected with a network including a specific communication interface.

Such a quality evaluation apparatus sets a specified packet detection apparatus based on a transmission quality measurement request to a network management system, and measures packet transmission quality by receiving a recording data message including information of a specific packet detected according to the setting. By doing so, there is a great advantage to minimize the amount of data transmitted and received with the packet detection device, and to increase the accuracy of the packet transmission quality.

Next, the recording data message transmitted and received by the packet detection apparatus and the quality evaluation apparatus will be described in detail.

4 is a block diagram illustrating a write data message according to an embodiment of the present invention.

As shown in FIG. 4, the recording data message 700 according to an embodiment of the present invention is a message that records information necessary for measuring a transmission quality of a specific packet extracted by a packet detection apparatus. The network management system shown in FIG. A flow ID (Flow-ID) including a message identification number specified by the request of the 400 or the quality evaluation apparatus 300, the number of packets including the number of specific packets included, and the time at which the specific packet was first detected. A packet arrival interval including information about the arrival time of the first packet, the serial number including the identification or flow-level value of the particular packet, and the arrival time of the particular packet.

Such a recording data message includes a plurality of specific packet extraction information necessary for measuring a transmission quality of a specific packet, and thus has an advantage of efficiently reducing traffic and measuring accurate packet transmission quality.

5 is a flowchart illustrating a method of measuring a transmission quality of a specific packet in a packet transmission quality measuring system according to an exemplary embodiment of the present invention.

As shown in FIG. 5, a specific packet transmission quality measurement method according to an embodiment of the present invention is performed by the network management system (PMMS) 400 requesting a packet transmission quality measurement to a quality evaluation apparatus (PES) 300 ( S100). In this case, the packet transmission quality measurement request of the network management system 400 may include setting information of the quality evaluation device (PES) 300 or the packet detection system (PS) 200.

The quality evaluation apparatus 300 receives a transmission quality measurement for a specific packet from the network management system 400, and sets the first packet detection apparatus 200-1 and the second packet detection apparatus 200-3 accordingly. Send the information. In this case, the setting information includes subscriber flow information.

The first packet detecting apparatus 200-1 stores the received setting information and sets the device based on the stored setting information (S102).

When the first packet detecting apparatus 200-1 receives the specific first packet transmitted from the first subscriber station 100-1 to the second subscriber station 100-5, the first packet detecting apparatus 200-1 detects the packet based on the setting information. (S106, S108), information necessary for measuring the transmission quality of the detected first packet is stored (S110).

Similarly, when the second packet specified by the first subscriber station 100-1 to the second subscriber station 100-5 is transmitted from the first subscriber station 100-1, the first packet detection apparatus 200-1 transmits the packet based on the setting information. It detects (S116, S120), and stores information necessary for measuring the transmission quality of the detected second packet (S122).

As such, the first packet detecting apparatus 200-1 detects a plurality of specific packets satisfying the setting information, stores the information necessary for measuring the transmission quality of the specific packet according to the detection, and transmits the plurality of specific packets satisfying the setting information. The information necessary for quality measurement will be stored.

The first packet detecting apparatus 200-1 generates a first recording data message when information necessary for measuring transmission quality for a specific packet satisfies a specific number based on setting information (S124) and generates the first recording. The data message is transmitted to the quality evaluation device (PES) 300 (S126).

The second packet detecting apparatus 200-3 stores the received setting information, and sets the device based on the stored setting information (S104).

When the second packet detecting apparatus 200-3 receives the second packet received from the first subscriber station 100-1 to the second subscriber station 100-5, the second packet detecting apparatus 200-3 detects the packet based on the setting information. (S106, S112), information necessary for measuring the transmission quality of the detected first packet is stored (S114).

Similarly, when the second packet specified by the second subscriber station 100-1 is transmitted from the first subscriber station 100-1 to the second subscriber station 100-5, the second packet detection apparatus 200-3 transmits the packet based on the setting information. It detects (S116, S128), and stores the information necessary for measuring the transmission quality of the detected second packet (S130).

In this way, the second packet detecting apparatus 200-3 detects a plurality of specific packets satisfying the setting information, stores the information necessary for measuring the transmission quality of the specific packet according to the detection, and transmits the plurality of specific packets satisfying the setting information. The information necessary for quality measurement will be stored.

When the information required for transmission quality measurement for a specific packet satisfies a specific number based on the setting information, the second packet detecting apparatus 200-3 generates a second recording data message (S132), and generates the generated second recording. The data message is transmitted to the quality evaluation device (PES) 300 (S134).

The quality evaluation device (PES) 300 receives the first recording data message and the second recording data message, and compares the received first recording data message and the second recording data message to measure quality (S136). Then, the measured quality information is transmitted to the network management system (PMMS) (S138).

 The packet transmission quality measurement is performed by detecting a packet of a specific subscriber station based on preset information using two packet detection apparatuses, generating a plurality of detected packet information as a specific record data message, and transmitting the packet to a quality evaluation apparatus. In addition, the traffic according to the transmission quality measurement is significantly reduced, and the efficient packet transmission quality information can be obtained by comparing the recorded data messages detected by the two packet detection apparatuses.

The embodiments of the present invention described above are not implemented only through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementations can be easily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

According to the above-described configuration, the packet transmission quality measurement system detects a packet of a subscriber terminal actually used, generates a plurality of detected information as a specific record data message, and transmits it to a quality evaluation apparatus, thereby significantly reducing traffic according to transmission quality measurement. It is possible to expect the effect of reducing the packet data quality information by reducing and comparing the recorded data messages detected by the two packet detection apparatuses.

Claims (18)

In the packet transmission quality measurement system connected to the network management system for managing the network to transmit and receive data, and measures the transmission quality of the packet transmitted and received by the subscriber station, A detection device for detecting a predetermined first packet among the packets transmitted and received by the subscriber station and generating a specific message in which information necessary for measuring transmission quality of the first packet is recorded; And  A quality evaluation device configured to set the detection device to detect the first packet according to a transmission quality measurement request of the network management system, and to measure the transmission quality based on the specific message received from the detection device Packet transmission quality measurement system comprising a. The method of claim 1, The specific message is, A first message extracting the first packet transmitted from the subscriber station and recording information necessary for measuring transmission quality of the first packet; And A second message that extracts the first packet received by the subscriber station and records information necessary for measuring transmission quality of the first packet Packet transmission quality measurement system comprising a. The method of claim 2, The measured transmission quality comprises a packet loss rate, a packet transmission delay, and a packet transmission jitter. The method of claim 3, The first message and the second message, Packet transmission quality measurement system including flow ID, packet number, first packet arrival time, serial number, packet arrival interval and flow information. Packet transmission quality measurement system comprising a. The method of claim 2, The network management system, Requesting the quality estimation apparatus to measure transmission quality of the first packet, and receiving transmission quality information of the measured first packet from the quality estimation apparatus. The method of claim 2, The quality evaluation device, A packet detection device setting module configured to detect the first packet from the detection device according to the transmission quality measurement request; A quality measurement module for measuring a quality according to the first packet transmission based on the specific message, and transmitting the measured transmission quality information to the network management system; A storage module for storing the specific message received from the packet detection device and storing the measured transmission quality information; And Control module for controlling and managing the packet detection device setting module, quality measurement module and storage module Packet transmission quality measurement system comprising a. The method of claim 6, And a communication module controlled by the control module and connected to a network including a specific communication interface. The method of claim 2, The packet detection device, A packet detection module for extracting the first packet from among the packets transmitted and received by the subscriber station to obtain information necessary for measuring transmission quality of the first packet; A storage module for storing the information obtained from the packet detection module; A message generating module generating the specific message based on at least two pieces of the information stored in the storage module; And A control module configured to set the packet detection module and the message generation module according to a setting request received from the quality evaluation apparatus Packet transmission quality measurement system comprising a. The method of claim 8, And a communication module controlled by the control module and connected to a network including a specific communication interface. The method according to any one of claims 1 to 9, And the first packet is a packet that satisfies a predetermined value included in specific subscriber flow information. The method of claim 10, The specific subscriber flow information, Source IP Address, Destination IP Address, Protocol, Service Type, Traffic Class, Source Port, and Destination Port in Packet Header Port) is a packet transmission quality measurement system, characterized in that the set information of packets satisfying a predetermined value. In the message processing method of the packet detection apparatus for detecting a packet transmitted and received between the first subscriber station and the second subscriber station and transmitting the packet to the device for evaluating the transmission quality a) receiving and storing setting information from the quality evaluation apparatus; b) detecting a first packet of the packets based on the setting information, and storing information necessary for transmission quality measurement from the detected first packet; c) generating a specific message based on the stored information when the information necessary for measuring the stored transmission quality satisfies a preset number; And d) transmitting the generated specific message to the device Message processing method comprising a. The method of claim 12, The specific message includes a flow ID, a packet number, a first packet arrival time, a serial number, a packet arrival interval, and flow information. The method of claim 12, The detected first packet is a packet that satisfies a predetermined value included in specific subscriber flow information. The method of claim 14, The specific subscriber flow information, Source IP Address, Destination IP Address, Protocol, Service Type, Traffic Class, Source Port, and Destination Port in Packet Header Port) is set information of packets satisfying a predetermined value. In the quality management method of a network management system for managing a network, and a quality evaluation device for transmitting and receiving data with a detection device for detecting a specific packet, a) transmitting setting information to the detection device according to a packet transmission quality measurement request of the network management system; b) receiving, from the detection apparatus, a first message including information necessary for measuring transmission quality according to detection of the first packet transmitted by a subscriber station based on the configuration information; c) receiving, from the detection apparatus, a second message including information necessary for measuring transmission quality according to the detection of the first packet received by the subscriber station based on the configuration information; And d) comparing the received first message with the second message to measure packet transmission quality and transmitting the measured information to the network management system; Quality measurement method comprising a. The method of claim 16, The first message and the second message includes a flow ID (Flow-ID), the number of packets, the first packet arrival time, serial number, packet arrival interval and flow information. The method of claim 16, The measured packet transmission quality includes a packet loss rate, a packet transmission delay, and packet transmission jitter.

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