CN101888658A - GPRS (General Packet Radio Service) core network simulation and test system - Google Patents

GPRS (General Packet Radio Service) core network simulation and test system Download PDF

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CN101888658A
CN101888658A CN 201010227740 CN201010227740A CN101888658A CN 101888658 A CN101888658 A CN 101888658A CN 201010227740 CN201010227740 CN 201010227740 CN 201010227740 A CN201010227740 A CN 201010227740A CN 101888658 A CN101888658 A CN 101888658A
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test
network element
success rate
mobile phone
core network
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CN101888658B (en
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郑清
江厚炎
汪兴东
陈玉
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BEIJING WANET TELECOM TECHNOLOGY Co Ltd
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BEIJING WANET TELECOM TECHNOLOGY Co Ltd
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Abstract

The invention discloses a GPRS (General Packet Radio Service) core network simulation and test system applied to the field of mobile phone network testing. The system comprises a system access module, a system configuration and management module, a service test and management module, an alarm and management module and a fault analyzing and positioning module, wherein the system access module is accessed into a network through a simulated core network element and a hardware interface; and the service test and management module is used for issuing a test task, transferring a mobile phone simulated by the system configuration module to generate signaling and sending the signaling to the core network for testing through the simulated network element for testing. In the system, the simulated mobile phone and core equipment before an access point are used for testing, which crosses a wireless network and avoids the occupation to wireless network resources and the influence of the wireless network on a testing result. Meanwhile, in the method of the invention, a GPRS terminal quantity and a high-intensity test task are generated through software simulation, thus the system expansion cost is relatively lower.

Description

GPRS core network simulation test macro
Technical field
The present invention relates to the cell phone network field tests, relate in particular to a kind of GPRS core network simulation test macro.
Background technology
The multiple mobile data services of GPRS (GPRS) and association thereof have obtained increasing system operator and value-added service merchant's attention as the important service form of communication network.Along with the continuous enhancing of business tine and application function and perfect, the GPRS data service has become one of the most potential current value-added telecom services classification.Yet GPRS network also owing to the complexity of its class of business, the diversity of network interface, makes its network and service availability real time implementation monitoring difficulty increase greatly when providing convenient communication service for the user.
Find in the production practices that there are a series of practical problems in conventional terminal modular type data service test products:
A. take too much Radio Resource during testing, influence far-end testing unit region user and normally use business;
B. measurement accuracy is subjected to the wireless network factor affecting bigger, can not accurately locate wireless or core net obstacle location;
C. test pattern, parameter control are limited by the pre-defined of terminal module or testing mobile phone manufacturer, and information is comprehensive to expect to have gap with user's test;
D. mainly revise testing task script by short message mode, task adjustment management is difficulty comparatively;
G. the expansion of testing intensity and class of business relies on the increase of mobile phone terminal module to realize, and is uneconomical relatively;
E. the systemic-function upgrading needs to carry out one by one to far-end testing cell site, and upgrade cycle is long;
F. the testing module failure needs the scene to patrol and examine discovery, generally needs Dai Wei, and the cost expenditure is bigger.
Summary of the invention
The object of the present invention is to provide a kind of GPRS core network simulation test macro of crossing wireless network, directly carrying out operational trials in each interface access of GPRS core net.
To achieve these goals, the technical solution used in the present invention is as follows:
GPRS core network simulation test macro comprises:
System's access module: be used for the core network element before the analogue system access point and make up host-host protocol, provide described test macro to insert the hardware interface of GPRS core net simultaneously;
System configuration administration module: be used for mobile phone, SIM card by software approach emulation different model, and the test data of the network element of system's access module emulation is configured, described test data is meant that this emulation network element inserts the essential data that dispose of GPRS core net institute;
Operational trials administration module: be used for formulating, manage and issue test assignment;
Alarm management module: be used for alarm setting, and output alarm signal be set according to alarm;
The accident analysis locating module: be used for analyzing failure cause, and the fault location network element;
Described operational trials administration module issues test assignment according to user instruction, and call the emulation mobile phone according to the content of test assignment, the emulation SIM card, generate test signaling, described test signaling is successively by described emulation network element, hardware interface is transferred to the GPRS core network, described operational trials administration module is accepted the response data of test signaling in the time of each equipment of process GPRS core network, and this response data outputed to described accident analysis locating module, simultaneously, the test result of test is at every turn outputed to described alarm management module, described accident analysis locating module is according to the response data analyzing failure cause that receives, the fault location network element, described alarm management module is according to the success rate of test result calculations test assignment, when meeting the condition of alarm setting, send alarm signal.
Preferably, described system configuration administration module also is used for described system is moved needed user and authority is set control.
Preferably, the alarm setting of described alarm management module is divided into:
The single task alarm is provided with: at key task alarming threshold is set separately;
Overall situation alarm is provided with: at other all test assignments except that being provided with independent alarming threshold unified alarming threshold is set.
Preferably, the alarm of described alarm management module: the mode of described output alarm signal be terminal in real time screen show, short message mode, output to the network management alarm platform by the snmp protocol mode.
Preferably, described analogue system access point is arranged on SGSN or the network element after it.
Preferably, the mobile phone of described emulation different model, SIM card, realize by the following method:
The first step: monitoring GB interface, gather GB link institute data carried by data;
Second step: the signaling data in the described data that will collect separates with user service data, and the described signaling data that obtains is decoded, and decoding needs in detail to the Bit level;
The 3rd step: with decoded signaling data splice, order corrigendum, reduce its complete signaling process at each mobile phone, and therefrom obtain the GB layer parameter of each mobile phone;
The 4th step: with related its user service data of the complete signaling process of each mobile phone, reduction upper-layer service information, and therefrom obtain the IP layer parameter that comprises mobile phone model of each relevant mobile phone;
The 5th step: a type storehouse that is used to store model information is set; The GB layer and the IP layer parameter of each mobile phone are integrated;
The 6th step: before the parameter information after the integration of a mobile phone is deposited into the type storehouse, whether had the mobile phone of same model in the retrieval type storehouse, if there is no, then directly deposited the type storehouse in; If exist, then continue to differentiate the current handset capability parameter of extracting and whether exist, if there is no, be appended to the mobile phone storehouse, if exist then give up;
The 7th step: return the first step and repeat, simultaneously,, form the emulation SIM card according to the SIM card information parameter of pre-emulation;
The 8th step: type model and SIM card in conjunction with simulation realizes, realize mobile phone emulation.
The GB layer parameter of described mobile phone, comprise cell phone network ability information, mobile phone wireless ability information, the IP layer parameter of described mobile phone comprises one or several in user profile, network setup information, TCP/IP configuration information, DNS configuration information, the HTTP/WAP/MMS configuration information.
Described user profile is meant IMSI number, the Mobile Subscriber International ISDN Number of mobile phone, and described network setup information comprises that APN is provided with, the WAP gateway setting.
The GB layer parameter of the mobile phone that obtains in described the 3rd step is that index generates the cellphone information parameter library with TLLI, and IP address allocated and described IP layer parameter are integrated in activating with PDP then.
After described the 5th step, comprise the steps: that also opening space is provided with the internal memory trie tree in internal memory, deposit the GB layer and the IP layer parameter of the integration described in the 5th step in described internal memory trie tree earlier, and then carry out the 6th the step deterministic process, met for the 6th step during described condition, deposit the parameter after integrating in described type storehouse from described internal memory trie tree.
Preferably, analyzing failure cause is realized by the following method:
A test assignment is decomposed according to the signaling engagement process, find all can cause the failure cause of test crash;
A Cause and Effect matrix is set, comprises big bone and some main bones, set up the corresponding relation of described failure cause and described main bone, the number of described main bone and the number of described failure cause equate;
Corresponding relation between configuration failure reason and the error code;
Send solicited message to tested network;
If return error message, then, find failure cause, find its corresponding winner bone according to failure cause according to the corresponding relation between failure cause and the error code according to the error code of described error message, show the Cause and Effect matrix that has this main bone, and on this main bone, show this failure cause that finds.
Can also may further comprise the steps:
Be the default testing time of described test assignment,
After once test is finished, start test next time, and testing time is added 1, reach default testing time up to testing time;
Write down the result of each test, if success then adds 1 with number of success, if failure, then the number of times that this failure cause is caused testing test crash adds 1.
Described testing time, number of success, the frequency of failure are also shown on the Cause and Effect matrix, wherein, described testing time is marked at the fish tail position of Cause and Effect matrix, described number of success is indicated in a fish direction, and the number of times that causes test crash and the failure cause of each failure cause are presented on the Cause and Effect matrix together.
The corresponding relation of described failure cause and described main bone is set up in the following way: the main the preceding bone of failure cause correspondence position the preceding takes place.
Preferably, described fault location network element is realized by the following method:
Design some test assignments, the corresponding route of each test assignment;
A success rate threshold value A is set, is higher than the success rate threshold value A and represents all network elements in this route all normal, a success rate threshold value B is set, be lower than success rate threshold value B and represent and have the fault network element in this route;
Carry out described test assignment, and write down the success rate of each test assignment;
Find out the test assignment that described success rate is lower than described success rate threshold value B, find out the test assignment that success rate is higher than described success rate threshold value A simultaneously;
The test assignment that a described success rate is lower than described success rate threshold value B successively with each described success rate be higher than described success rate threshold value A test assignment the route comparison of process; If two test assignments are all passed through same network element, then eliminating changes network element; Through comparison, if last only surplus next network element, then this network element is the fault point, if at last by a more than network element, then the fault point is in this remaining at last network element scope; Repeat this step, the test assignment that is lower than described success rate threshold value B up to all success rates is finished comparison.
The route of described test assignment correspondence should cover all permutation and combination methods of core network element;
Described test assignment the route of process be rendered in the window.
When new test assignment, the route of its process is in time added to described window.
Can also comprise step: the route that success rate is lower than the test assignment of described success rate threshold value B is shown as eye-catching in window and is different from the form of other routes, record is through the success rate of all tasks of each network element, when the success rate through all tasks of a network element all is lower than described success rate threshold value B, then locatees this network element and be the fault network element.Further, also comprise step: described fault network element is marked with distinguishing mark.
Beneficial effect of the present invention is as follows:
GPRS core network simulation test macro of the present invention is tested by the equipment of the core network before emulation mobile phone and the access point, crossed wireless network, avoided to wireless network resource take and wireless network to the influence of test result, simultaneously, method of the present invention generates GPRS terminal quantity and high strength testing task by software emulation, and the system extension cost is relatively low.Simultaneously, method of the present invention can be to carrying out failure cause Accurate Analysis and localization of fault to network by the technical method of accident analysis locating module.
Description of drawings
Fig. 1 is the structured flowchart of system of the present invention;
Fig. 2 is the fish-bone structure chart when adopting the Cause and Effect matrix analyzing failure cause;
Fig. 3 is for adopting the result schematic diagram of Cause and Effect matrix analyzing failure cause;
Fig. 4 is a concrete network element structural representation;
Fig. 5 is the schematic diagram that shows the fault network element by window
Embodiment
Below in conjunction with the drawings and specific embodiments method of the present invention is further described.
Referring to accompanying drawing, system of the present invention comprises system's access module, system configuration administration module, test service administration module, alarm management module, accident analysis locating module.
Wherein system's access module is used for the equipment before the emulation access point, and make up its communication protocol, the network element device of GPRS core net comprises PCU (Package Control Unit, packet control unit), SGSN (SERVICING GPRS SUPPORT NODE, serving GPRS support node), GGSN (Gateway GPRS Support Node, Gateway GPRS Support Node), WAP GW and each enterprise customer's equipment, method of the present invention is to cross wireless network directly to insert core net, this just needs access point at SGSN and afterwards, if access point is on SGSN, then system's access module need be simulated and generate emulation PC U, if access point is on GGSN, then system's access module need be simulated and generate emulation SGSN, and the like, system's access module also needs to make up the communication protocol between access point and the emulation network element before thereof, and communication link is configured.
Test macro of the present invention wants to insert the GPRS core net, must carry out the configuration of test data, this configuration is provided by the GPRS core network operators, simultaneously also need to do corresponding setting in the GPRS core net, the system configuration administration module is used for finishing this task is set, be responsible for the mobile phone and the SIM card of each model of emulation simultaneously, mobile phone and SIM card emulation can realize by the following method:
At first will be by monitoring GB interface, gather GB link institute data carried by data, need this moment elder generation and GB interface to connect, and the electrical characteristic index of coupling GB LI(link interface), access way can be divided into the access of TDM frame relay high-ohmic cross-connection according to the interface difference and GB OVER IP inserts two kinds along separate routes;
Then, the data of gathering are handled, the signaling data that the GB link is carried separates with user service data, and signaling data wherein decoded, decoding needs in detail to the Bit level, referring to accompanying drawing 2, hierarchical diagram for the protocol stack of GB link, bottom-uply during decoding successively carry out, in SNDCP layer encapsulation IP segmentation, carrying the most important information that method of the present invention will be used, i.e. user's application data;
The 3rd step, decoded data are synthesized, comprise to decoded data splice, order corrigendum, restore the complete signaling process of each mobile phone;
The 4th step: carry out signaling and synthesize, promptly according to the complete signaling process that obtains, the user service data that the GB link is carried carries out playback, reduction upper-layer service information, obtain relevant mobile phone model field, specifically referring to performance capability indexs such as table 1 time slot ability, wireless capabilities, finally finish the real software simulation of this mobile phone.
The handset capability ability index that table 1 method of the present invention need be obtained
Figure BSA00000192087500051
Figure BSA00000192087500061
Figure BSA00000192087500071
The 5th step, the emulation SIM card, want mobile phone that can network of real emulation and also need emulation one SIM card, SIM card emulation realizes according to the SIM card related information parameters, these parameters comprise KI value and respective version, IMSI value, Mobile Subscriber International ISDN Number information, by the fusion of these parameters, software forms this SIM card.If in order to finish mobile phone test, the emulation SIM card must be a new SIM, can not with number conflict of SIM card in the existing network.
Test assignment is formulated and issued to the test service administration module according to user's instruction, and call emulation mobile phone, emulation SIM card according to the content of test assignment, generate test signaling, described test signaling is transferred to the GPRS core network by described emulation network element, hardware interface successively, described operational trials administration module is accepted the response data of test signaling in the time of each equipment of process GPRS core network, and this response data outputed to described accident analysis locating module, simultaneously, the test result with test at every turn outputs to described alarm management module.The concrete test service that can carry out sees Table 2.
The test service that table 2 utilizes system of the present invention to carry out
Figure BSA00000192087500082
Figure BSA00000192087500091
Figure BSA00000192087500101
Figure BSA00000192087500111
Alarm management module, alarm setting in advance according to user instruction, comprise that overall situation alarm is provided with, the single task alarm is provided with, and the alarm mode can be set, the alarm mode comprise the local terminal in real time screen show, by short message mode output, the long-range alarm platform that links to each other with native system that outputs to.Alarm management module is being accepted the test result of each test assignment, is object with the test assignment, constantly analyzes success rate in the current measurement period according to test result, when success rate is lower than specified threshold, produces alarm immediately.The operation of this function is not subjected to the influence of every business and running status thereof, can react the ruuning situation and the network quality of each test assignment objective, really.
The accident analysis locating module, the return information that the GPRS that forwards according to the test service administration module nets, analyzing failure cause, the fault location network element is for the maintenance of GPRS net provides foundation.Analyzing failure cause can be by a kind of fish-bone analytical method, and is specific as follows:
At first find out all reasons that can lead to the failure at a test assignment, a Cause and Effect matrix is set then, this Cause and Effect matrix is made up of big bone and main bone, time sequencing according to failure cause is set up corresponding relation with main bone successively, the main the preceding bone correspondence of failure cause and position the preceding promptly takes place, failure cause after occurring in and position after main bone correspondence, because when mistake occurring, system can return and comprise the error code error message, in order to react failure cause intuitively, need the corresponding relation between pre-configured error code and the failure cause, find failure cause from error code, find the main bone of failure cause correspondence again according to this corresponding relation; Main bone that will find at last and corresponding failure cause thereof are presented on the Cause and Effect matrix, the structure of Cause and Effect matrix with reference to the accompanying drawings 2.In the test assignment, generally can be provided with same content measurement, same tested object are repeatedly tested, be calculated to be power, and it is presented in the Cause and Effect matrix together.Referring to accompanying drawing 3, it is the displayed map as a result of a concrete test, 807 tests have been carried out altogether, wherein successful number of times has 804 times, and the number of times of failure has 3 times, in the middle of 3 times, overtime 1 time of one-level page TCP three-way handshake, account for 0.12% of total testing time, one-level page HTTP text is downloaded imperfect 2 times, accounts for 0.25% of total testing time.Just can reflect the actual conditions of measurand like this from this Cause and Effect matrix clearly.
The fault location network element can adopt to be realized a method of access traversal trial and error, specific as follows:
Design some test assignments, the corresponding route of each test assignment; The route of described test assignment correspondence preferably covers all permutation and combination methods of core network element.
A success rate threshold value one is set, is higher than success rate threshold value one and represents all network elements in this route all normal, a success rate threshold value two is set, be lower than success rate threshold value two and represent and have the fault network element in this route;
Carry out described test assignment, and write down the success rate of each test assignment;
Find out the test assignment that described success rate is lower than described success rate threshold value two, find out the test assignment that success rate is higher than described success rate threshold value one simultaneously;
The test assignment that a described success rate is lower than described success rate threshold value two successively with each described success rate be higher than described success rate threshold value one test assignment the route comparison of process; If two test assignments are all passed through same network element, then eliminating changes network element; Through comparison, if last only surplus next network element, then this network element is the fault point, if at last by a more than network element, then the fault point is in this remaining at last network element scope; Repeat this step, the test assignment that is lower than described success rate threshold value two up to all success rates is finished comparison.
Be a concrete example below, referring to accompanying drawing 4, it is a concrete network, network shows and arrives the path that 163 websites come out through all permutation and combination of network element from PCU1, be specially path 1 (A-B-D-F-H), path 2 (A-B-D-G-H), path 3 (A-B-E-F-H), path 4 (A-B-E-G-H), path 5 (A-C-D-F-H), path 6 (A-C-D-G-H), path 7 (A-C-E-F-H), path 8 (A-C-E-G-H), design 8 test assignments of passing through different paths respectively, and to be arranged to power threshold one be 95%, success rate is higher than 95% and represents all network elements in this route all normal, being arranged to power threshold two is 40%, and success rate is lower than 40% and represents and have the fault network element in this route;
Test according to this 8 paths simultaneously from the A point, the result is as follows:
Through the test assignment of path 1 (A-B-D-F-H), success rate 97%;
Through the test assignment of path 2 (A-B-D-G-H), success rate 98%;
Through the test assignment of path 3 (A-B-E-F-H), success rate 20%;
Through the test assignment of path 4 (A-B-E-G-H), success rate 13%;
Through the test assignment of path 5 (A-C-D-F-H), success rate 99%;
Through the test assignment of path 6 (A-C-D-G-H), success rate 100%;
Through the test assignment of path 7 (A-C-E-F-H), success rate 33%;
Through the test assignment of path 8 (A-C-E-G-H), success rate 7%;
Be lower than 40% through the success rate of the test assignment in path 3, path 4, path 7, path 8 wherein, represent in this four paths the fault network element is arranged, success rate through the test assignment in path 1, path 2, path 5, path 6 is higher than 95%, then represents all network elements in this four paths all normal.Successively with path 3, path 4, path 7, path 8 respectively with other four paths in the comparison of every paths:
With path 3 and path 1 contrast, there are identical network element: A, B, F, H, can determine that then network element E is the fault network element.
With path 4 and path 1 contrast, there are identical network element: A, B, H, then earlier with its eliminating, continue network element remaining in the comparison path 4 and the network element in the path 2, comprise network element G, and then get rid of network element G, then only remain next network element E this moment, can determine that network element E is the fault network element.
With path 7 and path 1 contrast, there are identical network element A, F, H, earlier with these three eliminatings, network element that is left in the continuation comparison path 7 and the network element in the path 2 do not have identical network element, network element that continuation comparison path 7 is left and the network element in the path 5, there is identical network element C, then C is got rid of, this moment, only surplus next network element E can determine that network element E is the fault network element.
With path 8 and path 1 contrast, there are identical network element A, H, with these two eliminatings, continue network element remaining in the comparison path 8 and the network element in the path 2 earlier, comprise identical network element G, so with its eliminating, there are identical network element C in network element that continuation comparison path 8 is left and the network element in the path 5, then C are got rid of, this moment, only surplus next network element E can determine that network element E is the fault network element.
Further, the fault location network element can also show in another window, the route that success rate is lower than the test assignment of described success rate threshold value two is shown as eye-catching in window and is different from the form of other routes, record is through the success rate of all tasks of each network element, when the success rate through all tasks of a network element all is lower than described success rate threshold value two, then locatees this network element and be the fault network element.Referring to accompanying drawing 5, it is a concrete example, according to above-mentioned test structure, can know, be lower than 40% through the success rate of the test assignment in path 3, path 4, path 7, path 8 wherein, then the path that these four link testers are crossed dots, other path is represented with solid line, can certainly mark different colors, not as failure path is represented with redness, other is represented with black, as long as eye-catching just passable, be dotted line from scheming to go up the path that just can find out significantly through network element E like this, determine that then E is the fault network element, and go out with empty collimation mark, to warn.

Claims (10)

1.GPRS the core network simulation test macro is characterized in that; Comprise:
System's access module: be used for the core network element before the analogue system access point and make up host-host protocol, provide described test macro to insert the hardware interface of GPRS core net simultaneously;
System configuration administration module: be used for mobile phone, SIM card by software approach emulation different model, and the test data of the network element of system's access module emulation is configured, described test data is meant that this emulation network element inserts the essential data that dispose of GPRS core net institute;
Operational trials administration module: be used for formulating, manage and issue test assignment;
Alarm management module: be used for alarm setting, and output alarm signal be set according to alarm;
The accident analysis locating module: be used for analyzing failure cause, and the fault location network element;
Described operational trials administration module issues test assignment according to user instruction, and call the emulation mobile phone according to the content of test assignment, the emulation SIM card, generate test signaling, described test signaling is successively by described emulation network element, hardware interface is transferred to the GPRS core network, described operational trials administration module is accepted the response data of test signaling in the time of each equipment of process GPRS core network, and this response data outputed to described accident analysis locating module, simultaneously, the test result of test is at every turn outputed to described alarm management module, described accident analysis locating module is according to the response data analyzing failure cause that receives, the fault location network element, described alarm management module is according to the success rate of test result calculations test assignment, when meeting the condition of alarm setting, send alarm signal.
2. GPRS core network simulation test macro according to claim 1 is characterized in that: described system configuration administration module also is used for described system is moved needed user and authority is set control.
3. GPRS core network simulation test macro according to claim 1 is characterized in that: the alarm setting of described alarm management module is divided into:
The single task alarm is provided with: at key task alarming threshold is set separately;
Overall situation alarm is provided with: at other all test assignments except that being provided with independent alarming threshold unified alarming threshold is set.
4. GPRS core network simulation test macro according to claim 1 is characterized in that: the alarm of described alarm management module: the mode of described output alarm signal be terminal in real time screen show, short message mode, output to the network management alarm platform by the snmp protocol mode.
5. GPRS core network simulation test macro according to claim 1 is characterized in that: described analogue system access point is arranged on SGSN or the network element after it.
6. GPRS core network simulation test macro according to claim 1 is characterized in that: the mobile phone of described emulation different model, SIM card, realize as follows:
The first step: monitoring GB interface, gather GB link institute data carried by data;
Second step: the signaling data in the described data that will collect separates with user service data, and the described signaling data that obtains is decoded, and decoding needs in detail to the Bit level;
The 3rd step: with decoded signaling data splice, order corrigendum, reduce its complete signaling process at each mobile phone, and therefrom obtain the GB layer parameter of each mobile phone;
The 4th step: with related its user service data of the complete signaling process of each mobile phone, reduction upper-layer service information, and therefrom obtain the IP layer parameter that comprises mobile phone model of each relevant mobile phone;
The 5th step: a type storehouse that is used to store model information is set; The GB layer and the IP layer parameter of each mobile phone are integrated;
The 6th step: before the parameter information after the integration of a mobile phone is deposited into the type storehouse, whether had the mobile phone of same model in the retrieval type storehouse, if there is no, then directly deposited the type storehouse in; If exist, then continue to differentiate the current handset capability parameter of extracting and whether exist, if there is no, be appended to the mobile phone storehouse, if exist then give up;
The 7th step: return the first step and repeat, simultaneously,, form the emulation SIM card according to the SIM card information parameter of pre-emulation;
The 8th step: type model and SIM card in conjunction with simulation realizes, realize mobile phone emulation.
7. GPRS core network simulation test macro according to claim 1 is characterized in that: described analyzing failure cause, realize by the following method:
A test assignment is decomposed according to the signaling engagement process, find all can cause the failure cause of test crash;
A Cause and Effect matrix is set, comprises big bone and some main bones, set up the corresponding relation of described failure cause and described main bone, the number of described main bone and the number of described failure cause equate;
Corresponding relation between configuration failure reason and the error code;
Send solicited message to tested network;
If return error message, then, find failure cause, find its corresponding winner bone according to failure cause according to the corresponding relation between failure cause and the error code according to the error code of described error message, show the Cause and Effect matrix that has this main bone, and on this main bone, show this failure cause that finds.
8. GPRS core network simulation test macro according to claim 7 is characterized in that: can also may further comprise the steps:
Be the default testing time of described test assignment,
After once test is finished, start test next time, and testing time is added 1, reach default testing time up to testing time;
Write down the result of each test, if success then adds 1 with number of success, if failure, then the number of times that this failure cause is caused testing test crash adds 1.
Described testing time, number of success, the frequency of failure are also shown on the Cause and Effect matrix, wherein, described testing time is marked at the fish tail position of Cause and Effect matrix, described number of success is indicated in a fish direction, and the number of times that causes test crash and the failure cause of each failure cause are presented on the Cause and Effect matrix together.
9. GPRS core network simulation test macro according to claim 1 is characterized in that: described fault location network element is realized by the following method:
Design some test assignments, the corresponding route of each test assignment;
A success rate threshold value A is set, is higher than the success rate threshold value A and represents all network elements in this route all normal, a success rate threshold value B is set, be lower than success rate threshold value B and represent and have the fault network element in this route;
Carry out described test assignment, and write down the success rate of each test assignment;
Find out the test assignment that described success rate is lower than described success rate threshold value B, find out the test assignment that success rate is higher than described success rate threshold value A simultaneously;
The test assignment that a described success rate is lower than described success rate threshold value B successively with each described success rate be higher than described success rate threshold value A test assignment the route comparison of process; If two test assignments are all passed through same network element, then get rid of this network element; Through comparison, if last only surplus next network element, then this network element is the fault point, if at last by a more than network element, then the fault point is in this remaining at last network element scope; Repeat this step, the test assignment that is lower than described success rate threshold value B up to all success rates is finished comparison;
Preferably, the route of described test assignment correspondence should cover all permutation and combination methods of core network element.
10. GPRS core network simulation test macro according to claim 9 is characterized in that: described test assignment the route of process be rendered in the window;
When new test assignment, the route of its process is in time added to described window;
The route that success rate is lower than the test assignment of described success rate threshold value B is shown as eye-catching in window and is different from the form of other routes, record is through the success rate of all tasks of each network element, when the success rate through all tasks of a network element all is lower than described success rate threshold value B, then locatees this network element and be the fault network element.Further, also comprise step: described fault network element is marked with distinguishing mark.
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