CN1494249A - Base station controller/base station receiving/transmitting information apparatus imitator in CDMA system - Google Patents
Base station controller/base station receiving/transmitting information apparatus imitator in CDMA system Download PDFInfo
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- CN1494249A CN1494249A CNA021450021A CN02145002A CN1494249A CN 1494249 A CN1494249 A CN 1494249A CN A021450021 A CNA021450021 A CN A021450021A CN 02145002 A CN02145002 A CN 02145002A CN 1494249 A CN1494249 A CN 1494249A
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Abstract
The invention includes the testing background and the communication front-end processor. TCP-IP protocol and Ethernet interface are utilized to connect the testing background and the communication front-end processor as well as to transfer signaling message between foreground and background. Since network interface support module same as module of object to be tested is adopted, thus BSC/BTS simulators are full compatible on communication layer so as to reach seamless connection. The invention provides access interface RS422/E1 at bottom layer for non standard interface inside CDMA system. The invention simulates BSC and BTS and realizes testing of protocols in flows of registration, call and switch by using RS422/E1 interface to access system to be tested.
Description
Technical field
The present invention relates in code division multiple access (CDMA) system base station controller (BSC) or base station transceiver (BTS) be carried out in real time and the test macro of testing protocol consistency, relate in particular to test macro cdma system inside non-standard interface protocol conformance.
Background technology
The communication protocol in digital communication field is a lot, has a plurality of device fabrication merchants developing product separately at the application of a certain agreement, because each development person is to the understanding difference of agreement, the communication equipment effectively problem of intercommunication is on the rise.Under perfect condition, different manufacturers should be in proper communication under the network environment by the equipment of same protocol standard production, but actual conditions are really not so, because the designer is to the different understanding of standard, and each producer holds different technical policies, cause some performance of product or depart from standard, it is a subclass of standard, the network cisco unity malfunction that is interconnected into by these and the inconsistent communication equipment of standard, therefore before network opening and open service not function/the performance to equipment test, its feasible degree is very low, simultaneously when apparatus interconnection generation problem, be badly in need of weighing the consistency of equipment, thereby find out the root of problem with unified yardstick.In order to address this problem, the notion of uniformity test has been proposed.
The indentification protocol that is meant so-called uniformity test realizes the consistency with the respective protocol standard, it only is concerned about that agreement realizes being presented in outside performance, belong to Black-box Testing from method of testing, its test control relies on input message, test is observed and is relied on output message, and state confirmation is determined by particular sequence.In the world in order to realize standardization to the uniformity test process, ISO and ITU-T have proposed an international standard ISO/IEC 9646 (ITU is series X.290) at uniformity test, wherein provide the notion of TTCN (the tree table is in conjunction with the statement method), be used to describe abstract test suite (ATS).At first, TTCN is designed to regular formal language, and complete design criterion and strict grammer are arranged; Secondly, TTCN describes testing process with a kind of abstract concept again, does not have positive connection with concrete execution platform, has very big versatility; Then, TTCN occurs as a kind of international standard, is observed jointly by numerous producers, and the TTCN code of being realized is reusable, need not change; In concrete statement, TTCN is similar to general programming language, also comprises the statement of type and data, adopts modular notion equally.Also have some to aim at the notion that test proposes in addition, as adjudicating with preliminary ruling to the result of test case, showing the powerful pattern matching ability to complex data structures of reusing, comprise ASN.1 of the introduction (preamble) of how to construct test case and postorder (postamble), support test component (test component) and data structure etc.; Because TTCN adopts the mode of tree table combination to carry out the use-case design, seems very directly perceived and easy-to-use.
These characteristics that had just because of the TTCN language make it be applied to gradually in real time and the communication system field tests.
In the testing protocol consistency field, there has been numerous manufacturer production to go out various interface protocol testers, but it mostly is to design at standard interface, Abis interface such as gsm system, its first, two layers is standard, the tester that some instrument companies produce in view of the above just has versatility, test by common standard, can simulate BSC (base station controller) as 6113 (base station) GSM tester of Britain Racal instrument company (RACALINSTRUMENT) release fully by the A-BIS interface and control BTS (base station), and then BTS is comprehensively tested.But to non-standard interface, because the closure of manufacturer's technology, be difficult to find suitable tester to carry out protocol test, Abis interface such as cdma system is exactly like this, for this interface to the base station product of cdma system carries out consistent validity check, need to make up a test macro that is used for inner non-standard interface test, be referred to as the BSC/BTS simulator.
Summary of the invention
Technical problem to be solved by this invention is to provide BSC/BTS simulator in a kind of cdma system, is used for the requirement whether test b SC and BTS satisfy the agreement of Abis interface, overcomes the defective of existing commercial apparatus.
BSC/BTS simulator of the present invention comprises test background and prepositive communication computer; Adopt ICP/IP protocol to be connected between described test background and the described prepositive communication computer by Ethernet interface, the signaling message between the transmission AM/BAM, described prepositive communication computer links to each other with system under test (SUT).
Described prepositive communication computer comprises master control borad, auxiliary activities plate and power panel, adopt the form communication of DISCO general line between described master control borad and the described auxiliary activities plate, described master control borad is used for the multiplex/demultiplex of forwards and traffic frame, and described auxiliary activities plate uses when expanding the concurrent test link; Described power panel is used to provide power supply; The RS422 interface is arranged on the described master control borad, when system under test (SUT) is BSC, among the RS422 port of described prepositive communication computer and the BSC on the Network Interface Module corresponding RS422 port link to each other; When system under test (SUT) was BTS, the RS422 port among the RS422 port of described prepositive communication computer and the BTS on the communication control module linked to each other;
When the soft handover of a plurality of base station transceivers of test, described prepositive communication computer also can further comprise the interface conversion plate, be used for the RS422 interface conversion is become the E1 interface, link to each other with the channel/data service unit of a BTS, the form that other BTS then connect with daisy chain is articulated in after the above-mentioned BTS.
BSC/BTS simulator of the present invention is compatible fully on communication layers owing to adopted the network interface supporting module identical with tested object, can reach both sides' seamless link; On application layer, utilize TTCN language description test case, daemon software has been realized effectively adaptive to test case it being carried out in constructed concrete running environment (Abis interface simulated environment), makes test platform and test case keep apart like this.The present invention is primarily aimed at the inside non-standard interface Abis interface of cdma system, bottom access interface between that provide and the system under test (SUT) is the RS422/E1 interface, adaptation module also designs according to Abis interface message, the test case of writing by the Abis code requirement has versatility from this point the present invention in the test of this interface protocol, so long as just can be moved in this system; The present invention simulates BSC and BTS respectively, inserts system under test (SUT) by the RS422/E1 interface, realizes flow process testing of protocols such as registration, calling, switchings.Furthermore, because the TTCN grammer is irrelevant with concrete operation platform, if can provide and system under test (SUT) between the access capability of hardware and bottom software, the thinking that makes up according to the present invention just can be used for the test of any interface protocol, tests and be not limited to aforesaid Abis interface.
Description of drawings
Fig. 1 is the structure chart of BSC/BTS simulator of the present invention.
Fig. 2 a is a kind of application connection layout of the present invention.
Fig. 2 b is second kind of the present invention and uses connection layout.
Fig. 2 c is that of the present invention the third used connection layout.
Fig. 3 is the internal structure schematic diagram of prepositive communication computer among Fig. 1.
Fig. 4 is a software configuration distribution map of the present invention.
Embodiment
Below in conjunction with accompanying drawing, enforcement of the present invention is described in further detail.
Fig. 1 is the structural representation of simulator of the present invention, comprises test background and prepositive communication computer, adopts tcp/ip communication between the two.Test background adopts common PC, and the windows98/NT system is installed, and has Ethernet card to realize the TCP/IP connection, and the working procedure of TTCN is just realized on test background; Prepositive communication computer can comprise 4 veneers, be respectively master control borad, auxiliary activities plate, interface board and power panel, wherein power panel provides the operating current of other veneer, interface board is used for realizing the output of the RS422 interface on the master control borad is converted into the output of E1 interface, master control borad is realized the foreground processing of signaling, traffic frame, but it only uses under minority concurrent test way, when concurrent way is too much (greater than 5 the tunnel), then handle, can support 15 road concurrent test ways by the multiplex/demultiplex of the firm and hard existing traffic frame of auxiliary activities.The present invention has utilized TTCN language design abstract test use-case ATS, and by voluntarily the structure the TTCN adaptation module ATS is carried out adaptation processing, the ETS that generation can be carried out (executable test suite) moves on workbench then, carries out the checking that agreement realizes.
Fig. 2 has shown that three kinds of simulator of the present invention are used schematic diagram.Among Fig. 2 a, simulator is used for simulating BTS, also comprised simultaneously emulation to mobile phone information, prepositive communication computer by RS422 port and BSC go up for the RS422 port of simulation BTS setting link to each other, realize connection physically, the test case of daemon software operation is used for the message of emulation travelling carriage-transceiver pusher side, carries out alternately with true BSC, with the function realization situation of checking BSC side.Simulator is used to simulate BSC among Fig. 2 b, link to each other with a real BTS, be mainly used to carry out the interior functional test of single BTS scope, as calling, More Soft Handoff etc., also directly link to each other with RS422 port on the BTS by the RS422 port at prepositive communication computer under this mode, realize the path of physics, the test case that daemon software moves is used for the message of emulation BSC side, carry out alternately with BTS, the function of checking BTS side realizes situation.Simulator is used to simulate BSC among Fig. 2 c, connect two real BTS, can be used to carry out the test of soft handover between BTS, under this mode, be the port of realization with same simulator, two BTS have been adopted the form of daisy chain connection, simultaneously in order to work, also need the RS422 port of prepositive communication computer is converted into the E1 interface, be used for linking to each other with the E1 interface on the BTS1, realize path physically, the test case of daemon software operation is come emulation BSC side message according to the flow process of soft handover, carries out alternately the realization situation of checking BTS side soft handover with BTS1 and BTS2.The support that has also added mobile phone in Fig. 2 b and Fig. 2 c, this is the subtest equipment that must introduce for the message closed loop that realizes whole test system.
Fig. 3 is the internal structure schematic diagram of prepositive communication computer, master control borad is positioned at the center, the Ethernet interface that links to each other with test background is provided, and directly export the RS422 interface, be mainly used in the forwarding of message and the multiplex/demultiplex of traffic frame, the output of RS422 interface simultaneously also can be through the interface conversion plate by the output of E1 interface.It between auxiliary activities plate and the master control borad inner the connection, adopt the form communication of DISCO general line, the multiplex/demultiplex that is used for traffic frame, it has partial function identical with master control borad, mainly be when the concurrent way of test is too much, for improving the expansion that real-time is carried out, if master control borad can meet the demands, can be without the auxiliary activities plate.
Fig. 4 is the software configuration distribution map of simulator, divides AM/BAM two parts.Test background is owing to use the test case of TTCN language generation, thereby on application layer, formed the running environment of a TTCN, be primarily aimed at concrete test macro structure TTCN adaptation layer, make the TTCN test case rationally to move in the system of reality, test background utilizes socket to realize linking with the TCP/IP of prepositive communication computer by communication module.Master control borad in the prepositive communication computer can be finished whole work, the foreground partition that AM/BAM communication is arranged on it, in order to carry out interacting message with test background, because related all kinds of signaling messages all are to handle in the TTCN test case in the testing process, therefore master control borad mainly is a forwarding capability of being responsible for message, be about to the message that test background sends and be given to system under test (SUT), the message that system under test (SUT) transmits is given to the test background processing again, and it has adopted base layer support module identical with system under test (SUT) and communication link agreement.In the emulation testing flow process, the pure signaling message of Abis interface is directly through communication support, socket interface, and after setting up call link, the signaling message that is included in the traffic frame then needs to carry out the multiplex/demultiplex processing, be about to message and business datum that test background sends and be multiplexed into effective traffic frame, issue system under test (SUT) again; Again the system under test (SUT) service frame transmitted is carried out demultiplexing, draw the signaling message that comprises wherein and send test background again to.On master control borad, can handle traffic frame.But because the transmitting-receiving cycle of traffic frame is 20ms, consideration in view of operating efficiency, when needs carry out more concurrent test way (＞5 the tunnel), the multiplex/demultiplex function of traffic frame can be peeled off out, realize this function with the auxiliary activities plate, what at this moment transmit between auxiliary activities plate and the master control borad is signaling content in the traffic frame.
Provide a concrete operation embodiment below.From test background test case is written into running environment, the user can key in control command by the mode of order line and carry out associative operation, comprise for the control of TTCN test run body and to list available test case (list), operation test case (run), single step run (step), breakpoint, manual input signal, record, use file input command etc. are set that its control procedure information all shows in imitative dos window.When the startup use-case is started working, simulator is mutual according to message flow of being write and system under test (SUT), these interaction messages can be carried and be obtained simultaneously, and note is sought in messaging list, the various relevant informations of message all have demonstration, so that analyze, also can check for the particular content of each bar message body, and then accurately hold message details in the test process by double-clicking its list items Pop-up message content display window.
Claims (3)
1, base station controller in a kind of code division multiple access system/base station transceiver simulator is characterized in that, comprises test background and prepositive communication computer; Adopt ICP/IP protocol to be connected between described test background and the described prepositive communication computer by Ethernet interface, the signaling message between the transmission AM/BAM, described prepositive communication computer links to each other with system under test (SUT);
Described prepositive communication computer comprises master control borad and power panel, and described master control borad is used for the multiplex/demultiplex of forwards and traffic frame; Described power panel is used to provide power supply; The RS422 interface is arranged on the described master control borad, and when system under test (SUT) was base station controller, the RS422 port in the RS422 port of described prepositive communication computer and the base station controller on the Network Interface Module linked to each other; When system under test (SUT) was base station transceiver, the RS422 port in the RS422 port of described prepositive communication computer and the base station transceiver on the communication control module linked to each other.
2, base station controller according to claim 1/base station transceiver simulator, it is characterized in that, when needs carry out more concurrent test way, described prepositive communication computer also comprises the auxiliary activities plate, adopt the form communication of DISCO general line between described auxiliary activities plate and the described master control borad, the multiplex/demultiplex that is used for traffic frame, what transmit between described auxiliary activities plate and the described master control borad is signaling content in the traffic frame.
3, base station controller according to claim 1 and 2/base station transceiver simulator, it is characterized in that, when testing the soft handover of a plurality of base station transceivers, described prepositive communication computer also comprises the interface conversion plate, be used for the RS422 interface conversion on the master control borad is become the E1 interface, link to each other with the channel/data service unit of a base station transceiver, the form that other base station transceivers then connect with daisy chain is articulated in after the above-mentioned base station transceiver.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2006037271A1 (en) * | 2004-10-09 | 2006-04-13 | Huawei Technologies Co., Ltd. | Wireless base station testing auxiliary interface device and wireless base station testing system |
| CN1329837C (en) * | 2004-08-20 | 2007-08-01 | 中兴通讯股份有限公司 | Method and apparatus for simulating base station network management system on personal computer |
| CN100438671C (en) * | 2005-06-28 | 2008-11-26 | 华为技术有限公司 | Method for testing base station if normal talking |
| CN100456866C (en) * | 2005-12-13 | 2009-01-28 | 聚信科技有限公司 | Base station simulator and base station testing method |
| CN100558181C (en) * | 2006-03-28 | 2009-11-04 | 大唐移动通信设备有限公司 | Be applicable to the data test device of interface between base station and the controller thereof |
| CN101137181B (en) * | 2007-10-09 | 2010-06-09 | 中兴通讯股份有限公司 | Load testing method and device |
| CN1863327B (en) * | 2005-05-10 | 2010-06-23 | 中兴通讯股份有限公司 | Method for implementing data and speech transmitting method based on packet CDMA2000 access network |
| CN101159961B (en) * | 2007-10-25 | 2010-09-29 | 中兴通讯股份有限公司 | Method and system of implementing base station controlled test in mobile communication system |
| CN101877875A (en) * | 2010-06-30 | 2010-11-03 | 中兴通讯股份有限公司 | Method and system for simulating BTS and user terminal |
| CN101351014B (en) * | 2007-07-16 | 2011-07-13 | 中兴通讯股份有限公司 | Test system for anolog base station controller and test method |
| CN101159956B (en) * | 2007-10-29 | 2011-08-10 | 中兴通讯股份有限公司 | Analog switching mechanism and switching method for communication system |
| CN101232661B (en) * | 2008-01-21 | 2011-12-07 | 中兴通讯股份有限公司 | System and method for testing protocol consistency for base station |
| CN101621419B (en) * | 2008-07-01 | 2011-12-14 | 大唐移动通信设备有限公司 | Reusable test message adapting method and system |
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| KR100229966B1 (en) * | 1997-07-02 | 1999-11-15 | 윤종용 | A method and device for testing the function of the base station controller in Radio Telecommunication system |
| JPH11220435A (en) * | 1998-01-30 | 1999-08-10 | Kokusai Electric Co Ltd | Radio base station simulator |
| KR100387041B1 (en) * | 2001-02-03 | 2003-06-12 | 삼성전자주식회사 | Apparatus and method for call simulating in cellular mobile telecommunication system |
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- 2002-10-31 CN CNB021450021A patent/CN100388656C/en not_active Expired - Fee Related
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| CN1329837C (en) * | 2004-08-20 | 2007-08-01 | 中兴通讯股份有限公司 | Method and apparatus for simulating base station network management system on personal computer |
| CN100359971C (en) * | 2004-10-09 | 2008-01-02 | 华为技术有限公司 | Reglation testing axiliary interface device of radio base station and testing system using it |
| WO2006037271A1 (en) * | 2004-10-09 | 2006-04-13 | Huawei Technologies Co., Ltd. | Wireless base station testing auxiliary interface device and wireless base station testing system |
| CN1863327B (en) * | 2005-05-10 | 2010-06-23 | 中兴通讯股份有限公司 | Method for implementing data and speech transmitting method based on packet CDMA2000 access network |
| CN100438671C (en) * | 2005-06-28 | 2008-11-26 | 华为技术有限公司 | Method for testing base station if normal talking |
| CN100456866C (en) * | 2005-12-13 | 2009-01-28 | 聚信科技有限公司 | Base station simulator and base station testing method |
| CN100558181C (en) * | 2006-03-28 | 2009-11-04 | 大唐移动通信设备有限公司 | Be applicable to the data test device of interface between base station and the controller thereof |
| CN101351014B (en) * | 2007-07-16 | 2011-07-13 | 中兴通讯股份有限公司 | Test system for anolog base station controller and test method |
| CN101137181B (en) * | 2007-10-09 | 2010-06-09 | 中兴通讯股份有限公司 | Load testing method and device |
| CN101159961B (en) * | 2007-10-25 | 2010-09-29 | 中兴通讯股份有限公司 | Method and system of implementing base station controlled test in mobile communication system |
| CN101159956B (en) * | 2007-10-29 | 2011-08-10 | 中兴通讯股份有限公司 | Analog switching mechanism and switching method for communication system |
| CN101232661B (en) * | 2008-01-21 | 2011-12-07 | 中兴通讯股份有限公司 | System and method for testing protocol consistency for base station |
| CN101621419B (en) * | 2008-07-01 | 2011-12-14 | 大唐移动通信设备有限公司 | Reusable test message adapting method and system |
| CN101877875A (en) * | 2010-06-30 | 2010-11-03 | 中兴通讯股份有限公司 | Method and system for simulating BTS and user terminal |
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