KR20120064862A - Method and system for the performance evaluation of next generation network - Google Patents

Method and system for the performance evaluation of next generation network Download PDF

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KR20120064862A
KR20120064862A KR1020100126116A KR20100126116A KR20120064862A KR 20120064862 A KR20120064862 A KR 20120064862A KR 1020100126116 A KR1020100126116 A KR 1020100126116A KR 20100126116 A KR20100126116 A KR 20100126116A KR 20120064862 A KR20120064862 A KR 20120064862A
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traffic
test
generation network
interference
performance
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KR1020100126116A
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Korean (ko)
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남창섭
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주식회사 케이티
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0823—Errors, e.g. transmission errors
    • H04L43/0829—Packet loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/50—Testing arrangements

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The present invention relates to a method and system for evaluating performance of a next-generation network, and to provide a method and system for evaluating performance of a next-generation network capable of evaluating performance on end-to-end paths and performance degradation due to statistical multiplexing.
To this end, the present invention in the performance evaluation method of the next-generation network, to establish an end-to-end test path through the transmission equipment forming the next-generation network, and to establish an interference test path for causing interference to the set end-to-end test path Setting up; Transmitting test traffic according to a service provided by the next generation network through the set end-to-end test path, and transmitting background traffic that will act as an interference to the transmitted test traffic through the set interference test path; And a traffic analysis step of evaluating the performance of the next-generation network by analyzing traffic received through the set end-to-end test path and the set interference test path.

Description

METHOD AND SYSTEM FOR THE PERFORMANCE EVALUATION OF NEXT GENERATION NETWORK}

The present invention relates to a method for evaluating performance of a next generation network and a system thereof, and more particularly, to a method for evaluating a performance of a next generation network (IP communication network) and a system for evaluating the performance of a next generation network (IP communication network) more efficiently.

In general, the Next Generation Network (NGN) is a next-generation communication network that integrates existing public telephones, wireless telephones, and the Internet into a single packet structure, and includes an open modular standard protocol and an open interface. , Flexible, flexible, and affordable, to meet the needs of mobile, mobile, and telecommuters. It also provides simple voice messages and web-based information such as news, diaries, stock quotes, and account balances anytime, anywhere. You can get it by phone.

The characteristics of this next generation network (NGN) can be summarized as quality guaranteed traffic delivery consisting of underlying communication networks provided by various technologies. Therefore, it is necessary to confirm whether the implemented communication environment is suitable for the basic capability of next-generation network (NGN) to efficiently provide various high-speed service quality. For this purpose, reasonable evaluation is essential and reliable evaluation methodology should be developed.

To this end, many methods have been performed through simulation and analytical modeling methods, but they are still insufficient.

One of them is the baseline measurement method that evaluates packet forwarding performance by setting up one IP path between the IP traffic generator and the IP traffic analysis device. It is impossible to check the characteristics of the disadvantage.

In addition, there is a method performed in France ENL (European Network Laboratory) to generate background traffic to the baseline measurement method to interfere with the test IP traffic, which stores a large number of received packets of the IP characteristics in the buffer After the transmission method, the statistical multiplexing experiences a performance degradation, but has a disadvantage in that only a single IP device can be seen.

In addition, there is a method for evaluating performance for a communication network composed of a plurality of IP routers, but this method has a disadvantage in that it is impossible to evaluate performance degradation characteristics due to IP statistical multiplexing.

On the other hand, the performance evaluation method of the IP communication network must first define the performance evaluation targets that constitute the end-to-end path, and secondly, be able to provide test traffic that can maximize the characteristics of the IP traffic.

Therefore, the above-described prior art has a problem that it is impossible to check the characteristics of each path constituting the communication network, or it is impossible to evaluate the performance degradation characteristics due to IP statistical multiplexing in the communication network, the present invention to solve this problem Is the task.

Accordingly, an object of the present invention is to provide a method and system for evaluating performance of a next-generation network capable of evaluating performance on end-to-end paths and performance degradation due to statistical multiplexing.

In addition, the present invention is to propose a test traffic (test traffic and background traffic) that can maximize the characteristics of the IP traffic.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention which are not mentioned can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

A system of the present invention for achieving the above object, In the performance evaluation system of the next generation network, Test traffic generation means for generating test traffic according to the service provided by the next generation network; At least one background traffic generating means for respectively generating background traffic which will act as an interference to the test traffic generated by said test traffic generating means; The test traffic generated by the test traffic generating means is input through one end, and each background traffic generated by the background traffic generating means is correspondingly input, and the corresponding traffic is received according to a preset end-to-end test path and an interference test path. At least one transmission means for transmitting to the end; And a traffic analysis means for evaluating the performance of the next-generation network by analyzing the traffic received from the transmission means through the other end.

On the other hand, the method of the present invention for achieving the above object, in the performance evaluation method of the next-generation network, to set the end-to-end test path through the transmission equipment forming the next-generation network, to the set end-to-end test path Establishing an interference test path for causing interference; Transmitting test traffic according to a service provided by the next generation network through the set end-to-end test path, and transmitting background traffic that will act as an interference to the transmitted test traffic through the set interference test path; And a traffic analysis step of evaluating the performance of the next-generation network by analyzing traffic received through the set end-to-end test path and the set interference test path.

In general, next generation networks (NGN) have a final goal of providing integrated services based on multimedia. In pursuit of this, various next generation network (NGN) infrastructures are required, and the equipment to be constructed can also be expected to vary. An efficient measurement method that can clearly evaluate the performance and quality of service level of a communication network with such various devices is a very important field.

The performance evaluation method of the next generation network according to the present invention as described above has the effect of confirming the performance in the next generation network (NGN) while reflecting the realistic network environment.

In addition, the present invention has the effect of reducing the time and cost required for the performance measurement while performing the path measurement and traffic interference measurement separately for the performance measurement of the next-generation network (NGN).

In addition, the present invention is a base model of performance measurement for various application services provided through the next generation network (NGN).

1 is a configuration diagram of an embodiment of a performance evaluation system of a next-generation network according to the present invention;
2 is a diagram illustrating an embodiment of a performance evaluation system and a method of a next generation network according to the present invention;
3 is a flowchart illustrating a method for evaluating performance of a next generation network according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, It can be easily carried out. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

And throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between. Also, when a component is referred to as " comprising "or" comprising ", it does not exclude other components unless specifically stated to the contrary .

1 is a configuration diagram of a performance evaluation system of a next generation network according to the present invention, and a performance evaluation system capable of evaluating performance on end-to-end paths for a next generation network (IP communication network) and performance degradation characteristics according to statistical multiplexing. The performance test structure at is shown.

As shown in FIG. 1, the system for evaluating performance of a next generation network according to the present invention includes a test traffic generation device 100 and a test traffic generation device 100 for generating test traffic according to a service provided by a next generation network. First to third background traffic generating apparatuses 201 to 203 for generating background traffic which will act as interference to the test traffic generated by the second terminal, and inputting the test traffic generated by the test traffic generating apparatus 100 through one end Receiving corresponding background traffic generated by the first to third background traffic generating apparatuses 201 to 203 correspondingly, and terminating the corresponding traffic according to a preset IP test path (inter-termination test path) and an interference test path. First to third routers 301 to 303 for routing (transmission) to the network; It includes a traffic analysis device 400 for evaluating the performance of the next-generation network by analyzing the traffic received from the first to third routers (301 to 303) through the other end.

In this case, the traffic analysis device 400 evaluates the performance of the end-to-end path through the test traffic transmitted or lost between the end-to-end, and measures the interference of the background traffic to the test traffic to evaluate the performance degradation characteristics due to statistical multiplexing. do.

Next, the performance evaluation system of the next generation network according to the present invention will be described in more detail.

Test traffic generated by the test traffic generation device 100 is set by setting an IP test path (end-to-end test path) passing through the first to third routers 301 to 303 constituting the IP communication network (next-generation network). It is configured to be delivered to the analysis device 400.

And setting an interference test path for causing interference with the set IP test path (inter-end test path), so that the background traffic (interference traffic) generated by the first background traffic generating device 201 is input to the test traffic. The input terminal is input to a different input terminal so that the test traffic is output to the same output terminal as the output terminal. In addition, new background traffic generated by the second and third background traffic generating apparatuses 202 and 203 may be inputted to another input terminal and then transmitted to the same output terminal as the output terminal outputting the test traffic.

By setting and using the IP test path (end-to-end test path) and the interference test path as described above, it is possible to provide conditions similar to those of the traffic operating in the actual IP communication network environment, and to compensate for the disadvantages of the prior art. .

On the other hand, along with establishing the IP test path (inter-end test path) and the interference test path, it is very important to define the test traffic for performance evaluation. In this case, test traffic and background traffic are generated as test traffic, and the performance degradation characteristics directly experienced through the set IP test path (inter-end test path) and the interference test path, that is, the test target path and the test traffic are actual IP. Define the characteristics of test traffic and background traffic so that they interfere with the communication situation most closely.

All test traffic generated by the test traffic generating apparatus 100 according to the present invention is the size and bandwidth of the packet while maintaining the same interval (Same Interval) in order to ensure the accuracy of performance measurement, such as IP Delay Variation (IPDV) To change the range.

In this case, the bandwidth uses three types of bandwidths in consideration of characteristics of various services that can be provided in the next generation network (NGN). That is, three types of test traffic are used: a bandwidth of 500 kbps for low speed traffic such as voice, a 2 Mbps bandwidth for low quality video, and a 10 Mbps bandwidth for high quality video.

In addition, consideration should be given to the packet size. That is, various services in next generation network (NGN) environments are delivered by packets of various sizes according to their unique characteristics. Therefore, it uses packets of various sizes, ranging from small packets of 64 bytes, such as commands in games, to packets of 1500 bytes for large transmissions.

In addition, unlike the test traffic defined as equally spaced traffic at the IP layer, the background traffic should have similar conditions as the actual operation environment in order to ensure strict fairness and reliability of the performance evaluation result. Therefore, considering the convergence and distribution functions of traffic, we consider two directions for background traffic. That is, the UNI (User Network Interface) side aggregates traffic from various subscribers to the Network Network Interface (NNI) side, while the traffic from the NNI side should be distributed to the appropriate UNI side subscribers. Therefore, in consideration of such traffic operation situation, it is necessary to generate different traffic, and in the present invention, background traffic having such a condition is generated.

(1) UNI → NNI traffic

First, the bandwidth characteristics of the background traffic from the UNI side to the NNI side consider two kinds of bandwidths based on the allowable bandwidth provided by the UNI subscriber interface. That is, it uses 10 Mbps bandwidth considering the general low speed Ethernet interface and 100 Mbps bandwidth considering the high speed Ethernet interface. On the other hand, consideration should also be given to packet size, where various services in a next generation network (NGN) environment are delivered by packets of various sizes, depending on their unique characteristics. Therefore, it uses packets of various sizes, ranging from small packets of 64 bytes, such as commands in games, to packets of 1500 bytes for large transmissions.

(2) NNI → UNI traffic

First, the bandwidth characteristics of the background traffic from the NNI side to the UNI side consider two kinds of bandwidths based on the allowable bandwidth provided by the NNI side network interface. That is, it uses 100 Mbps bandwidth considering the general high speed Ethernet interface and 1 Gbps bandwidth considering the high speed Ethernet interface. On the other hand, considering the packet size, as with UNI → NNI traffic, considering the inherent characteristics of various services in the next generation network (NGN) environment, the packet size ranges from small sized 64 bytes packet to large size 1500 bytes sized packet. Use a packet of.

2 is a diagram illustrating an exemplary performance evaluation system and method for a next generation network according to an embodiment of the present invention. The performance degradation characteristics of the end-to-end path of a next generation network (IP communication network) and statistical multiplexing may be evaluated. A performance evaluation system and a method thereof will be described assuming first to third routers having a buffer capacity as shown in FIG. 2.

First, the first router 301 receives the test traffic 64 bytes packet ③ and the 1500 bytes packet ④ from the test traffic generating apparatus 100, and the background traffic 64 bytes packet (①) from the first background traffic generating apparatus 201. ) And 1500bytes packet (②) are input to the second router 302 in 500kbps, 2Mbps, and 10Mbps bandwidths (for example, 500kbps, 500kbps = 976.56 packets x 64bytes: 976.56 64byte packets per second). Sending it results in test traffic with 500 kbps bandwidth). At this time, the first router 301 has four buffers, and thus can transmit all packets ①, ②, ③, and ④ without loss. The first router 301 transmits UNI → NNI background traffic.

The second router 302 receives network traffic (packets ①, ②, ③, ④) from the first router 301, and receives 64 bytes packets (⑤) and 1500 bytes of background traffic from the second background traffic generating apparatus 202. The packet (6) is input to the third router 303 in 500kbps, 2Mbps and 10Mbps bandwidths (for example, 500kbps = 976.56 packets x 64byte). In this case, the second router 302 transmits packets ①, ②, ③, ④, and ⑤ to the third router 303, assuming that the processing capacity is large and has five buffers, but the packet ⑥ can receive the buffer. There is no drop. The second router 302 then transmits NNI → NNI background traffic.

The third router 303 receives network traffic (packets ①, ②, ③, ④, and ⑤) from the second router 302, and receives 64 bytes packets of background traffic (⑦) from the third background traffic generating device 203. And 1500bytes (8) packets are input and loaded on the 500kbps, 2Mbps, 10Mbps bandwidth to the traffic analysis device 400 (for example, 500kbps, 500kbps = 976.56 packets x 64bytes). In this case, the third router 303 transmits packets ①, ②, and ③ to the traffic analysis device 400, assuming that the processing capacity is small and has three buffers, but the packets ④, ⑤, ⑦, and ⑧ can be received. There is no buffer present and it is dropped. The third router 303 then transmits NNI → UNI background traffic.

As described above, in the third router 303, since the entire incoming traffic arrives beyond the capacity that can be handled, only packets ①, ②, ③ are output as UNI traffic to the right end. Then, the traffic analysis device 400 performs the performance measurement using the packets ①, ②, ③ output to the right end. That is, the traffic analysis apparatus 400 evaluates the performance of the end-to-end path through the test traffic transmitted or lost between the end-to-end, and measures the performance degradation characteristics due to statistical multiplexing by measuring the interference of the background traffic to the test traffic. do.

3 is a flowchart illustrating a method for evaluating performance of a next generation network according to the present invention.

First, an IP test path (inter-end test path) penetrating through the first to third routers 301 to 303 forming an IP communication network (next generation network) is set (501).

In operation 502, an interference test path for causing interference with the set IP test path (inter-end test path) is set.

Thereafter, the test traffic generated by the test traffic generating apparatus 100, that is, the test traffic according to the service provided by the next generation network is transmitted through the set IP test path (inter-end test path) (503).

At this time, the background traffic generated by the first to third background traffic generating apparatuses 201 to 203, that is, the background traffic that will act as an interference to the test traffic generated by the test traffic generating apparatus 100, is set through the set interference test path. Transmit 504.

The performance of the next-generation network is evaluated by analyzing the traffic transmitted through the set IP test path (inter-terminal test path) and the set interference test path (505). In this case, the traffic analysis process 505 evaluates the performance of the end-to-end path through the test traffic transmitted or lost between the end-to-end, and measures the performance degradation due to statistical multiplexing by measuring the interference of the background traffic to the test traffic. do.

On the other hand, the performance evaluation method of the next-generation network according to the present invention as described above may be implemented in the form of program instructions that can be executed by various computer means may be recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. The medium may be a transmission medium such as an optical or metal line, a wave guide, or the like, including a carrier wave for transmitting a signal designating a program command, a data structure, or the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various permutations, modifications and variations are possible without departing from the spirit of the invention.

Therefore, the scope of the present invention should not be construed as being limited to the embodiments described, but should be determined by the scope of the appended claims, as well as the appended claims.

The present invention can be used for performance evaluation for Next Generation Network (NGN).

100: test traffic generating device
201: first background traffic generating device
202: second background traffic generating device
203: third background traffic generating device
301: first router 302: second router
303: third router

Claims (8)

In the performance evaluation system of the next generation network,
Test traffic generating means for generating test traffic according to a service provided by a next generation network;
At least one background traffic generating means for respectively generating background traffic which will act as an interference to the test traffic generated by said test traffic generating means;
The test traffic generated by the test traffic generating means is input through one end, and each background traffic generated by the background traffic generating means is correspondingly input, and the corresponding traffic is received according to a preset end-to-end test path and an interference test path. At least one transmission means for transmitting to the end; And
Traffic analysis means for evaluating the performance of the next-generation network by analyzing the traffic received from the transmission means through the other end
Next-generation network performance evaluation system comprising a.
The method of claim 1,
The traffic analysis means,
A performance evaluation system for next-generation networks that evaluates performance on end-to-end paths through end-to-end passed or lost test traffic, and measures performance degradation due to statistical multiplexing by measuring interference of background traffic to test traffic.
The method of claim 2,
The end-to-end test path is set to pass through the transmission means forming the next-generation network so that test traffic generated by the test traffic generation means is delivered to the traffic analysis means,
The interference test path may be configured to cause interference with the set end-to-end test path, but an input terminal different from an input terminal through which background traffic generated by the background traffic generating means is inputted with test traffic generated by the test traffic generating means is input. And a test traffic generated by the test traffic generating means is output to the same output terminal as the output terminal.
The method according to any one of claims 1 to 3,
The test traffic generating means,
Performance evaluation system of next-generation network that generates test traffic while changing packet size and bandwidth range while maintaining Same Interval.
The method of claim 4, wherein
The range of the bandwidth,
Performance evaluation system for next generation networks, including bandwidth of 500 kbps for low speed traffic such as voice, 2 Mbps bandwidth for low quality video, and 10 Mbps bandwidth for high quality video.
The method of claim 4, wherein
The size of the packet,
Performance evaluation system for next-generation networks, ranging from packets of 64 bytes to packets of 1500 bytes.
In the performance evaluation method of the next-generation network,
Setting up an end-to-end test path through transmission equipment forming a next-generation network, and setting an interference test path for causing interference with the set end-to-end test path;
Transmitting test traffic according to a service provided by the next generation network through the set end-to-end test path, and transmitting background traffic that will act as an interference to the transmitted test traffic through the set interference test path; And
Traffic analysis step of evaluating the performance of the next-generation network by analyzing the traffic received through the set end-to-end test path and the set interference test path
Performance evaluation method of the next generation network comprising a.
The method of claim 7, wherein
The traffic analysis step,
Performance evaluation method of next-generation network that evaluates performance on end-to-end path through test traffic passed or lost from end to end, and measures performance degradation due to statistical multiplexing by measuring interference of background traffic to test traffic.
KR1020100126116A 2010-12-10 2010-12-10 Method and system for the performance evaluation of next generation network KR20120064862A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103117888A (en) * 2013-01-17 2013-05-22 深信服网络科技（深圳）有限公司 Method and device and system for carrying out application performance evaluation through network event
KR20220116899A (en) 2021-02-16 2022-08-23 호서대학교 산학협력단 Real-time IP network performance evaluation method and device using artificial intelligence

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103117888A (en) * 2013-01-17 2013-05-22 深信服网络科技（深圳）有限公司 Method and device and system for carrying out application performance evaluation through network event
KR20220116899A (en) 2021-02-16 2022-08-23 호서대학교 산학협력단 Real-time IP network performance evaluation method and device using artificial intelligence

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