CN100391179C - Code error testing system and method for network circuit - Google Patents
Code error testing system and method for network circuit Download PDFInfo
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- CN100391179C CN100391179C CNB2003101032887A CN200310103288A CN100391179C CN 100391179 C CN100391179 C CN 100391179C CN B2003101032887 A CNB2003101032887 A CN B2003101032887A CN 200310103288 A CN200310103288 A CN 200310103288A CN 100391179 C CN100391179 C CN 100391179C
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Abstract
The present invention relates to a detecting system and a detecting method for error codes on the lines of a network. The detecting system of the present invention comprises a testing code stream generating and sending assembly, a code stream receiving and synchronizing assembly, an error code rate statistic assembly and an interface assembly, wherein the testing code stream generating and sending assembly is used for generating and continuously sending the original testing code stream for detecting the error codes; the receiving and the synchronization treatment of the testing code stream is completed by the testing code stream receiving and synchronizing assembly, and a correct starting position of the data in the testing code stream is found. The error code rate statistic assembly is used for comparing the synchronous testing code stream received by the testing code stream receiving and synchronizing assembly with the original testing code stream generated by the testing code stream generating and sending assembly, and the number of error bits is counted and the error code rate of the lines of the network is calculated; the interface assembly is used for sending the data on the lines of the network to the testing code stream receiving and synchronizing assembly, and sending the data generated by the testing code stream generating and sending assembly to the lines of the network simultaneously. The assemblies are arranged on network devices on the end nodes of the lines of the detected network for the detection; correspondingly, the present invention also comprises the method for detecting the error codes on the lines of the network.
Description
Technical field
The present invention relates to communication network technical field, refer to the network line Error detection system and method for integrated services digital network (ISDN) especially.
Background technology
ISDN (Integrated Services Digital Network) is by IDN (IDN, Integrated Digital Network) differentiation forms, basic rate interface (BRI is provided, BasicRate Interface) and two kinds of user interfaces of PRI (PRI, Primary Rate Interface).
At present domestic isdn network circuit is generally the 2B+D pattern, i.e. two basic digital channels (B passage), a control figure passage (D passage).That is to say that BRI-ISDN provides two B passages and a D passage on a pair of twisted-pair feeder.The B passage is to be used for transporting speech, data etc., and the bandwidth of each B passage is 64Kbps.The D passage then is used for transfer instruction, and the bandwidth of each D passage is 16Kbps.Therefore, a 2B+D connects, and the transmission rate up to 144Kbps can be provided, and wherein clear data speed can reach 128Kbps.PRI PRI (30B+D) then speed is 2.048Mbps, and wherein clear data speed can reach 1920Kbps, therefore need generally to be used to the application of transferring large number of data.
Digital Subscriber Line (DSL, the Digital Subscribe Line) technology of utilizing BRI realizes that the numeral of subscribers feeder inserts, and PRI adopts the mode of pulse code modulation (PCM, Pulse Code Modulation) to insert.ISDN just provides numeral connection end to end like this, so can transmit various information with a single network, realizing the comprehensive access of all business, wherein can be traditional voice service, also can be data service and comprises multimedia service of looking audio frequency etc.
Video conferencing provides the exchange way of a kind of virtual " face-to-face ", utilizes existing network to carry out video/audio and data information transmission, to realize real-time reciprocal process.(bri interface provides the data channel of 128Kbps to ISDN owing to the transmission rate height, the PRI interface provides the data channel of 1920Kbps), insert convenient, to cover the region wide and become wherein a kind of application network line interface very widely, the provide support video conferencing equipment of isdn network line interface of well-known video conferencing device fabrication commercial cities such as Polycom, Tandberg, Vcon, PictureTel.
The isdn network major part all is to transform foundation on the former IDN network, the quality that a lot of local network circuits transmit can not satisfy the higher transmission requirement that video conferencing equipment video/audio transmits, often to carry out the detection of network line error code situation in use, simultaneously when some problem occurring, as: audiovideo poor quality etc., need detect the error code situation of network line to help the location and the solution of problem.
But the video conferencing equipment that has isdn interface does not at present all have the ability of network line Error detection, carries out the detection of network line error condition and can only finish by other professional test instruments: the tester of supporting isdn network circuit Error detection function as SUNSET, COBRA etc.This type of tester is independent of the network equipment and exists as the testing equipment of specialty, and price is relatively costly.Simultaneously non-professional general user has been manipulated certain degree of difficulty, the general user needn't not have this kind equipment yet, and this makes troubles just for the maintenance of the video conferencing equipment with isdn network line interface and positioning problems solution.
Summary of the invention
The problem that the present invention solves provides a kind of network line Error detection system and method, and make and finish end-to-end network line Error detection between network node, and needn't be by the professional test instrument.
For addressing the above problem, network line Error detection of the present invention system comprises:
Test code streams generates and sending assembly, and the original test code streams that is used for error code testing produces and sends continuously;
Test code streams receives and Synchronization Component, finishes the reception and the Synchronous Processing of test code streams, finds the correct original position of data in the test code streams, with the data that guarantee the to receive alignment of data with the opposite end transmission;
The Bit Error Ratio Measurement assembly, will from test code streams receive and Synchronization Component the synchronism detection code stream that receives generate with test code streams and the original test code streams of sending assembly generation compares, count the bit number and the computing network circuit error rate of mistake;
Interface module is given test code streams with the data on the network line and is received and Synchronization Component, simultaneously the data that test code streams generates and sending assembly produces is delivered on the network line.
Described each arrangement of components detects on the end node network equipment of the network line that detects.
Correspondingly, network line bit error detection method of the present invention is carried out following steps on the network line end node devices that detects:
1) determines Error detection pattern, test code character or code stream create-rule;
2) end node of the network line of Jian Ceing is set up the connection of B passage by calling network;
3) data sending terminal repeats to constitute by the test code character or generates original test code streams and transmission continuously according to rule;
4) data receiver carries out the synchronous searching of this test code streams;
5) test code streams that relatively receives of data receiver and the value of original test code streams are added up bit number inequality, calculate the error rate.
Described Error detection pattern comprises:
In the network line that detects, an end node network equipment disposes test code streams generation and sending assembly and interface module at least, and the peer node network equipment disposes test code streams reception and Synchronization Component, Bit Error Ratio Measurement assembly and interface module at least, to detect in this network line the error code situation on the B passage receive direction; Or
An end node network equipments configuration has test code streams generation and sending assembly, test code streams reception and Synchronization Component, Bit Error Ratio Measurement assembly and interface module, and the peer node network equipment has the data loop-back capability, to detect in this network line total error code situation on the B passage both transmit and receive direction; Or
An end node network equipments configuration has test code streams generation and sending assembly, test code streams reception and Synchronization Component, Bit Error Ratio Measurement assembly and interface module, and the peer node network equipment is a switch, and a B passage sends and another B passage receives total error code situation on the both direction in order to detect.
Compared with prior art, the present invention has the following advantages:
1. because of network line Error detection of the present invention system is arranged on the network equipment, so maintain easily the network equipment, network line;
2. the isdn network wireline inspection ability suitable with the professional test instrument is provided;
3. needn't use the tester of specialty because of the general user, and bring operational easy.
Description of drawings
Fig. 1 is a network line Error detection system schematic of the present invention.
Fig. 2, the 3rd, the Test Networking schematic diagram of network line Error detection of the present invention system.
Fig. 4-the 6th, the detecting pattern schematic diagram of network line Error detection system and method for the present invention.
Fig. 7, the 8th, network line bit error detection method flow chart of the present invention.
Embodiment
Please refer to shown in Figure 1ly, network line Error detection of the present invention system is used for integrated services digital network in the present embodiment, comprising:
Test code streams generates and sending assembly 1, and the original test code streams that is used for error code testing produces and sends continuously;
Test code streams receives and Synchronization Component 2, finishes acceptance test code stream and Synchronous Processing, finds the correct original position of data in the test code streams, is exactly the data that the opposite end sends to guarantee the data that receive, and is neither too much or too little, also do not lag behind in advance;
Bit Error Ratio Measurement assembly 3, will from test code streams receive and Synchronization Component 2 the synchronism detection code stream that receives generate with test code streams and the original test code streams of sending assembly 1 generation compares, count the bit number and the computing network circuit error rate of mistake;
Interface module 4 is given test code streams with the data on the network line and is received and Synchronization Component 2, simultaneously the data of test code streams generation and sending assembly 1 generation is delivered on the network line.
Above-mentioned each arrangement of components detects on the end node network equipment of the network line that needs detect.
Described original test code streams is repeated to constitute or generate according to certain create-rule by the fixing test code character, as repeating to produce 0xABCDABCD... by code character 0xABCD (16 system representation), or the sequence that generates as Euler's ordered series of numbers, by certain multinomial etc.No matter be which kind of mode, test code streams receives and this test code character or create-rule must be known and support to Synchronization Component 2, is used for comparison to produce the code stream identical with transmitting terminal.
The process of error code testing is: transmitting terminal sends continuous bit stream that certain fixing test code character repeats to constitute or the continuous bit stream that satisfies certain create-rule, after receiving terminal is received this test code streams, the code stream identical with the original test code streams of transmitting terminal generation compares, count bit number inequality (because of the network line error code causes, there is not error code as network line, should all be identical), just can carry out the calculating of the error rate.
Bit Error Ratio Measurement assembly 3 carries out the calculating of the network line error rate according to following formula:
The accumulation error rate=total error bits numbers/total reception bit number
Error burst rate=certain section interior total reception bit number of interior total error bits numbers/this section period of time.
Error detection needs end-to-end cooperation to carry out in the network line of integrated services digital network, and one of them end node is that the transmitting terminal peer node then is receiving terminal.Some the time same end node be transmitting terminal also be receiving terminal.
Please refer to shown in Fig. 2,3 in the present embodiment, with the network equipment of video conferencing equipment 21 as transmitting terminal, this video conferencing equipment has isdn interface.When carrying out error code testing,, also need other the network equipment (isdn switch 22 and ISDN tester 24 etc.) to be used except needing the network equipment of transmitting terminal and receiving terminal.
Network line Error detection system of the present invention (method) is configured (detection) according to following detecting pattern:
1. in the network line that needs detect, an end node network equipments configuration has test code streams to generate and sending assembly 1, test code streams reception and Synchronization Component 2, Bit Error Ratio Measurement assembly 3 and interface module 4, and the peer node network equipment is an integrated services digital network switch 22, and a B passage sends and another B passage receives total error code situation on the both direction in order to detect.
2. in the network line that needs detect, an end node network equipment disposes test code streams at least and generates and sending assembly 1 and interface module 4, and the peer node network equipment disposes at least that test code streams receives and Synchronization Component 2, Bit Error Ratio Measurement assembly 3 and interface module 4, to detect in this network line the error code situation on the B passage receive direction.
3. in the network line that needs detect, an end node network equipments configuration has test code streams to generate and sending assembly 1, test code streams reception and Synchronization Component 2, Bit Error Ratio Measurement assembly 3 and interface module 4, and the peer node network equipment has the data loop-back capability, to detect in this network line total error code situation on the B passage both transmit and receive direction.
Please in conjunction with shown in Fig. 2 and Fig. 4 (situation 3), the detection system concrete configuration of first kind of detecting pattern: video conferencing equipment 21 disposes the test code streams generation and sending assembly 1, test code streams receive and Synchronization Component 2, Bit Error Ratio Measurement assembly 3 and interface module 4, and the peer node network equipment is an isdn switch 22, and a B passage sends and another B passage receives total error code situation on the both direction in order to detect.In this detecting pattern, video conferencing equipment 21 be transmitting terminal also be receiving terminal, be equivalent to itself set up network line by isdn switch 22 call-conference television equipments 21, so isdn switch 22 does not need special configuration via isdn user's line.
Please in conjunction with shown in Fig. 3, Fig. 4 (situation 1), video conferencing equipment 21 be transmitting terminal also be receiving terminal, dispose test code streams generation and sending assembly 1, test code streams reception and Synchronization Component 2, Bit Error Ratio Measurement assembly 3 and interface module 4, the opposite end network equipment is supported the data loop-back capability, receive data from the B passage, simultaneously the data that receive are intactly sent on this B passage again, can detect total error code situation on this B passage both transmit and receive direction.Can think like this that also four assemblies of its opposite end network equipment all need dispose so if an end network equipment is supported the data loop-back capability.
Please in conjunction with shown in Fig. 3, Fig. 4 (situation 2), video conferencing equipment 21 be transmitting terminal also be receiving terminal, dispose test code streams generation and sending assembly 1, test code streams reception and Synchronization Component 2, Bit Error Ratio Measurement assembly 3 and interface module 4, the opposite end network equipment can receive and Synchronization Component 2, Bit Error Ratio Measurement assembly 3 and interface module 4 by a configuration testing code stream, just can detect the error code situation on this B passage receive direction.Really, the configuration testing code stream generates the opposite end network equipment and sending assembly 1 also can if go back.
Please refer to shown in Fig. 5,6, if an end network equipment only disposes test code streams and receives and Synchronization Component 2, Bit Error Ratio Measurement assembly 3 and interface module 4, the opposite end network equipment disposes test code streams generation and sending assembly 1 and interface module 4 at least to detect the error code situation of this B passage receive direction.Equally, if an end network equipment only disposes test code streams and generates and sending assembly 1 and interface module 4, then the opposite end network equipment disposes test code streams reception and Synchronization Component 2, Bit Error Ratio Measurement assembly 3 and interface module 4 at least, perhaps has the data of support loop-back capability, to detect the error code situation on this B passage receive direction.
Specifically please refer to shown in Fig. 7,8, correspondingly, network line bit error detection method integral body may further comprise the steps:
1) determines required integrated services digital network Error detection pattern and test code character or create-rule;
2) need the end node of the network line of detection to connect, see step 801,901 by integrated services digital network call setup B passage;
3) data sending terminal by the test code character repeat reach into or generate original test code streams and continuously transmission according to rule, see step 802;
4) data receiver carries out the synchronous searching of this test code streams, and this step further comprises: execution in step 902 receives the B channel data;
Execution in step 903, synchronously whether judgment data (be judged as prior art, do not give unnecessary details) synchronously, if asynchronous, then execution in step 904, carry out synchronous searching and return step 902 after synchronously;
If synchronously, then calculate the error rate;
5) test code streams that relatively receives of data receiver and the value of original test code streams are added up bit number inequality, calculate the error rate, and this step further comprises
Execution in step 905 is calculated the accumulation error rate;
Execution in step 906 judges whether the time interval of certain time period arrives, and execution in step 907 is calculated the error burst rate if the time interval has arrived, and the time interval can repeat to be provided with, to calculate the error burst rate in the different time sections; If the time interval does not arrive, then execution in step 902.
In sum, network line Error detection system and method for the present invention, the ability of the isdn network circuit Error detection that in the network equipment with isdn network line interface (as video conferencing equipment), provide identical, precision is suitable with professional test instrument function, the user needn't be by other testers, as long as in network line to be measured, set relevant parameter in the network equipment of end node, just can make things convenient for and finish the detection of isdn network circuit error condition exactly, solve with the location of work of maintaining easily and network line problem.
Claims (9)
1. a network line Error detection system is characterized in that, this Error detection system comprises:
Test code streams generates and sending assembly, and the original test code streams that is used for error code testing produces and sends continuously;
Test code streams receives and Synchronization Component, finishes the reception and the Synchronous Processing of test code streams, finds the correct original position of data in the test code streams, with the data that guarantee the to receive alignment of data with the opposite end transmission;
The Bit Error Ratio Measurement assembly, will from test code streams receive and Synchronization Component the synchronism detection code stream that receives generate with test code streams and the original test code streams of sending assembly generation compares, count the bit number and the computing network circuit error rate of mistake;
Interface module is given test code streams with the data on the network line and is received and Synchronization Component, simultaneously the data that test code streams generates and sending assembly produces is delivered on the network line;
Described each arrangement of components detects on the end node network equipment of the network line that detects.
2. network line Error detection as claimed in claim 1 system is characterized in that, each assembly of this detection system according to following pattern configurations on the end node network equipment of network line:
In the network line that needs detect, an end node network equipment disposes test code streams generation and sending assembly and interface module at least, and the peer node network equipment has and disposes test code streams reception and Synchronization Component, Bit Error Ratio Measurement assembly and interface module at least, to detect in this network line the error code situation on the B passage receive direction.
3. network line Error detection as claimed in claim 1 system is characterized in that, each assembly of this detection system according to following pattern configurations on the end node network equipment of network line:
In the network line that needs detect, an end node network equipments configuration has test code streams generation and sending assembly, test code streams reception and Synchronization Component, Bit Error Ratio Measurement assembly and interface module, and the peer node network equipment has the data loop-back capability, to detect in this network line total error code situation on the B passage both transmit and receive direction.
4. network line Error detection as claimed in claim 1 system is characterized in that, each assembly of this detection system according to following pattern configurations on the end node network equipment of network line:
In the network line that needs detect, an end node network equipments configuration has test code streams generation and sending assembly, test code streams reception and Synchronization Component, Bit Error Ratio Measurement assembly and interface module, and the peer node network equipment is a switch, and a B passage sends and another B passage receives total error code situation on the both direction in order to detect.
5. as any described network line Error detection system of claim 1 to 4, it is characterized in that the error rate is:
The accumulative total error rate, the ratio of total error bit total number and total reception bit number; Perhaps
The error burst rate, the ratio of interior total reception bit number of total error bits numbers and this section period in certain period.
6. network line Error detection as claimed in claim 5 system is characterized in that, the test code streams that test code streams generates and sending assembly is generated is made of fixing test code character or according to predetermined create-rule generation.
7. a network line bit error detection method is characterized in that, this method is carried out following steps on the network line end node devices that detects:
1) determines Error detection pattern, test code character or code stream create-rule;
2) the network line end node of Jian Ceing is set up the connection of B passage by calling network;
3) data sending terminal repeats to constitute by the test code character or generates original test code streams and transmission continuously according to predetermined create-rule;
4) data receiver carries out the synchronous searching of this test code streams;
5) test code streams that relatively receives of data receiver and the value of original test code streams are added up bit number inequality, calculate the error rate.
8. network line bit error detection method as claimed in claim 7 is characterized in that, in the network line that detects, the Error detection pattern is in the step 1):
In the network line that detects, an end node network equipment disposes test code streams generation and sending assembly and interface module at least, and the peer node network equipment disposes test code streams reception and Synchronization Component, Bit Error Ratio Measurement assembly and interface module at least, to detect in this network line the error code situation on the B passage receive direction; Or
An end node network equipments configuration has test code streams generation and sending assembly, test code streams reception and Synchronization Component, Bit Error Ratio Measurement assembly and interface module, and the peer node network equipment has the data loop-back capability, to detect in this network line total error code situation on the B passage both transmit and receive direction; Or
An end node network equipments configuration has test code streams generation and sending assembly, test code streams reception and Synchronization Component, Bit Error Ratio Measurement assembly and interface module, and the peer node network equipment is a switch, and a B passage sends and another B passage receives total error code situation on the both direction in order to detect.
9. network line bit error detection method as claimed in claim 7, it is characterized in that, the error rate is divided into the accumulation error rate and error burst rate in the step 5), the described accumulation error rate refers to the ratio of total error bit total number and total reception bit number, and the error burst rate refers to the ratio of interior total reception bit number of error bits numbers total in certain period and this section period.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2003101032887A CN100391179C (en) | 2003-11-04 | 2003-11-04 | Code error testing system and method for network circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2003101032887A CN100391179C (en) | 2003-11-04 | 2003-11-04 | Code error testing system and method for network circuit |
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| CN100391179C true CN100391179C (en) | 2008-05-28 |
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| CN101192902B (en) * | 2007-08-16 | 2010-09-29 | 中兴通讯股份有限公司 | A method for base band link statue detection |
| CN110582106A (en) * | 2019-08-15 | 2019-12-17 | 河北合纵电子技术有限公司 | Broadband power line carrier and micropower wireless dual-channel switching method and device |
| CN115794569A (en) * | 2021-09-09 | 2023-03-14 | 华为技术有限公司 | High-speed serial link testing method and device |
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| CN1268269A (en) * | 1997-08-26 | 2000-09-27 | Nemo技术有限公司 | Defining quality of transmission in a transmission system |
| US6215855B1 (en) * | 1999-01-21 | 2001-04-10 | Bell Atlantic Network Services, Inc. | Loop certification and measurement for ADSL |
| JP2001127729A (en) * | 1999-10-28 | 2001-05-11 | Nec Eng Ltd | Testing device for sdh transmission device |
| US20030063566A1 (en) * | 2001-09-28 | 2003-04-03 | Abramovitch Daniel Y. | Identifying and synchronizing permuted channels in a parallel channel bit error rate tester |
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| US5761216A (en) * | 1995-02-24 | 1998-06-02 | Advantest Corp. | Bit error measurement system |
| CN1268269A (en) * | 1997-08-26 | 2000-09-27 | Nemo技术有限公司 | Defining quality of transmission in a transmission system |
| US6215855B1 (en) * | 1999-01-21 | 2001-04-10 | Bell Atlantic Network Services, Inc. | Loop certification and measurement for ADSL |
| JP2001127729A (en) * | 1999-10-28 | 2001-05-11 | Nec Eng Ltd | Testing device for sdh transmission device |
| US20030063566A1 (en) * | 2001-09-28 | 2003-04-03 | Abramovitch Daniel Y. | Identifying and synchronizing permuted channels in a parallel channel bit error rate tester |
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