CN100464602C - Testing device for mobile communication equipment - Google Patents
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- CN100464602C CN100464602C CNB031571948A CN03157194A CN100464602C CN 100464602 C CN100464602 C CN 100464602C CN B031571948 A CNB031571948 A CN B031571948A CN 03157194 A CN03157194 A CN 03157194A CN 100464602 C CN100464602 C CN 100464602C
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Abstract
This invention relates to a test device of the mobile communication equipment especially used in testing the inter connections among multiple entities in a mobile communication network, in which, each being tested entity is connected with the test device removablly via a cable characterizing in including a RF wire network with multiple wires connecting the above mentioned entities, the said RF wire network is composed of a device transmitting control information to said network and a device extracting measured data from the said network.
Description
(1) technical field
The present invention relates to a kind of testing apparatus of mobile communication equipment.This device for example can be used for TD-SCDMA (TD SDMA) mobile network appliance.
(2) background technology
Carry out a series of testing of equipments in order to test the mutual communication of mobile network appliance, the equipment that is necessary must to be arranged in the laboratory environment, for example a mobile phone of conversing is switched between the base station.
For the third generation (3G) mobile phone standard TD-SCDMA, need the test various device, as the mutual communication between base transceiver station (BTS) and the mobile phone.In 3G, mobile terminal apparatus is called subscriber equipment (UE).In the mobile communication, a base station maintaining radio receiving-transmitting unit, this transceiver has been determined a sub-district and has been coordinated radio link protocol with subscriber equipment.This base transceiver station (BTS) is the network components of mobile communication system, and all signals are are all transmitted and received by it, and this base transceiver station is controlled by a base station controller (BSC).The description of TD-SCDMA standard can be from hereinafter knowing: " TD-SCDMA, the solution for TDD bands " Siemens AG Representation, 2002April, information and mobile communication group.
For testing, the mobile communications network entity is in the wired connection state.In the laboratory, should avoid wireless connections during test because during wireless connections accurately the control path parameter be difficult, in all tested circuits, produce many undesirable interference probably, thereby worsen test result.Furthermore, the health that the continuous width of cloth that changes is penetrated the operator that might damage testing equipment under the unoptimizable test condition.
Past, a mobile communications network entity is by manual a large amount of cables and radio frequency components and parts to be formed by connecting, but, the mode of this known connection different mobile communication network entity is very complicated, be difficult to understand system outline, it is quite complicated to control this system, and is difficult to obtain from system measurement data.Therefore, the shortage of known method is: measurement result may be inaccurate, can not satisfy the demand, and, need the long time test system building of cost in the known method of measurement.
(3) summary of the invention
Thereby an order of the present invention provides a kind of testing apparatus of mobile communication equipment, and it can be flexibly and tests various mobile communication equipments with saving time.
Above-mentioned purpose of the present invention is to realize by a kind of testing apparatus of mobile communication equipment.
The measurement mechanism of above-mentioned mobile communication equipment, be used for testing the mutual communication between mobile communications network base station and the subscriber equipment, wherein, described testing apparatus comprises a plurality of first aerial lugs and a plurality of second aerial lug, the cable in each base station detachably is connected to any one first aerial lug, each subscriber equipment detachably is connected to any one second aerial lug through a cable, it is characterized in that
Above-mentioned testing apparatus also comprises: the first synthesizer/power splitter and second synthesizer/power splitter;
A plurality of first aerial lugs converge to first synthesizer/power splitter;
A plurality of second aerial lugs converge to second synthesizer/power splitter;
Described first synthesizer/power splitter links to each other with described second synthesizer/power splitter;
And above-mentioned testing apparatus has a step attenuator respectively, also has a step attenuator respectively between each described second aerial lug and described second synthesizer/power splitter between each described first aerial lug and the described first synthesizer/power splitter;
Above-mentioned testing apparatus also links to each other with the device of carrying control information to it and from its device that extracts measurement data respectively.
Described testing apparatus further comprises: radio-frequency (RF) switch, the 3rd synthesizer/power splitter and the 4th synthesizer/power splitter;
Described the 3rd synthesizer/power splitter links to each other with described first synthesizer/power splitter;
Described the 4th synthesizer/power splitter links to each other with described second synthesizer/power splitter;
Described radio-frequency (RF) switch is between described the 3rd synthesizer/power splitter and described the 4th synthesizer/power splitter, be used for described the 3rd synthesizer of conducting/power splitter with described the 4th synthesizer/power splitter, make the two directly link to each other, perhaps with described the 3rd synthesizer/power splitter and described the 4th synthesizer/power splitter respectively conducting to an outside radio channel emulator, make the two pass through this radio channel emulator to link to each other.
First output (54) of described the 3rd synthesizer/power splitter (10) conducting to the first input end (53) of described radio channel emulator (50), described the 4th synthesizer/power splitter (13) conducting to described radio channel emulator (50);
Second input (51) of described the 3rd synthesizer/power splitter (10) conducting to second output (52) of described radio channel emulator (50), described the 4th synthesizer/power splitter (13) conducting to described radio channel emulator (50).
Described testing apparatus further comprises: radio-frequency (RF) switch, a plurality of pentahapto are grown up to be a useful person/power splitter and the 4th a synthesizer/power splitter; Each described pentahapto grows up to be a useful person/and power splitter is connected between each described first aerial lug and the described first synthesizer/power splitter, and is connected to the radio channel emulator of an outside; Described the 4th synthesizer/power splitter links to each other with described second synthesizer/power splitter; Described radio-frequency (RF) switch is between described first synthesizer/power splitter and described the 4th synthesizer/power splitter, be used for described first synthesizer of direct conducting/power splitter and described the 4th synthesizer/power splitter, perhaps with described the 4th synthesizer/power splitter conducting to described radio channel emulator, make its by described radio channel emulator grow up to be a useful person with described pentahapto/power splitter links to each other.
Described pentahapto grows up to be a useful person/and power splitter is connected to the input of described external radio frequency channel simulator by first connector and first power splitter, is connected to the output of described external radio frequency channel simulator by second connector and second power splitter;
Described the 4th synthesizer/power splitter is connected to the output of described external radio frequency channel simulator by the 3rd connector and the 3rd power splitter, is connected input from described external radio frequency channel simulator with the 4th power splitter by the 4th connector.
Described testing apparatus grows up to be a useful person at each described pentahapto/power splitter and described first synthesizer/power splitter between, further comprise fixed attenuator.
Described testing apparatus further comprises coupler between described second synthesizer/power splitter and each second aerial lug.
In a preferential embodiment of the present invention, each step attenuator is controlled by an attenuator controller, so that can control path loss neatly.
In one embodiment of the invention, this attenuator controller is connected on the above-mentioned step attenuator through the RS232 interface, and therefore, this step attenuator can be controlled by computer.
The attenuation change of this step attenuator is 0dB---60dB.
A plurality of testing apparatuss link together via the 3rd aerial lug, form a testing apparatus network.By means of the combination of this some radio frequency cable networks, most of operative scenario that can a common mobile communications network of emulation.
(4) description of drawings
The present invention will be further described by accompanying drawing below:
Fig. 1: a kind of schematic diagram of mobile communication equipment testing apparatus in expression one embodiment of the present of invention.
Fig. 2: the schematic diagram of expression a kind of testing apparatus of the mobile communication equipment that has a radio channel emulator in one embodiment of the present of invention.
Fig. 3: the schematic diagram of expression a kind of testing apparatus of the mobile communication equipment with a radio channel emulator in an alternative embodiment of the invention.
Fig. 4: six devices interconnect the test of carrying out mobile communication equipment in expression one embodiment of the present of invention.
(5) embodiment
A mobile communication equipment measurement mechanism 100 during Fig. 1 represents according to one embodiment of present invention.The test frequency scope of this device is 880MHz----960MHz, 1710MHz---1990MHz or 2010MHz---2025MHz.These frequency range systems are used for TD-SCMDA and gsm system.This measurement mechanism also can redesign and test and make it become the frequency range of other 2G or 3G system.Fig. 1 has detailed description, and wherein, a synthesizer/power splitter 1 is connected to this aerial lug Al, and a base station (BTSl) detachably is connected to this aerial lug A1 (not shown) by a cable.This synthesizer/power splitter 1 is being connected with an aerial lug Ca with the relative side of said external connector A1
1With a fixed attenuator 3.A second synthesizer/power splitter 2 is connected to an aerial lug A2, and it is via the cable (not shown) that detachably links to each other with another base station (BTS2).This second synthesizer/power splitter 2 is connected with another aerial lug Cat and fixed attenuator 40 above-mentioned synthesizer/ power splitters 1,2 show that isolations are-27dB in a side relative with said external connector A2.
Said fixing attenuator 3,4 all has-decay of 15dB, and further connect step attenuator 7 and 8.This step attenuator 7 and 8 is with 1dB step-length attenuation change between 0---60dB, and they are connected to attenuator controller 5,6, can control this step attenuator 7,8 thus.The isolation that synthesizer/power splitter 9 shows is-27dB, and further is connected to another synthesizer/power splitter 10, and it is connected to two aerial lug D1 in that relative side, D2 and a radio-frequency (RF) switch 11.This radio-frequency (RF) switch 11 further is connected to a synthesizer/power splitter 13, and it is connected with E2 with aerial lug E1 equally.Above-mentioned synthesizer/ power splitter 10 and 13 demonstrates isolation.Above-mentioned radio-frequency (RF) switch 11 can be by the 12 control foldings of an external path, thereby respectively at above-mentioned synthesizer/power splitter 10 and aerial lug D1, between the D2, above-mentioned synthesizer/power splitter 13 and said external connector E1, between the E2, perhaps between above-mentioned synthesizer/power splitter 10 and above-mentioned synthesizer/power splitter 13, provide respectively to be connected.By means of above-mentioned radio-frequency (RF) switch 11, can set up the connection of leading to external test arrangements, at Fig. 2, to this more detailed description will be arranged in 3 and 4.
Above-mentioned synthesizer/power splitter 13 is connected to another synthesizer/power splitter 14, and it is connected with eight cables in that side relative with above-mentioned synthesizer/power splitter 13.Above-mentioned synthesizer/power splitter 14 demonstrates isolation and is-27dB, and is connected to 8 step attenuators 15,16,17,18, on 19,20,21 and 22.These step attenuators can be by attenuator controller 23,24, and 25,26,27,28,29 and 30 control.All these controllers and connector 5,6 and 12 can be combined on the control panel on the front panel, or are combined on the RS232 interface, so that outer computer control.The attenuation change scope of each above-mentioned step attenuator changes from 0-60dB with the adjusting step-length of 1dB, and can adjust flexibly.Each step attenuator further is connected to a fixed attenuator 31,32,33,34,35,36,37,38, and it has fixing pad value 15dB.Said fixing attenuator 31,32,33,34,35,36,37,38 are connected to coupler 39,40 separately, and 41,42,43,44,45 and 46.By means of these couplers, can test data and provide data to each bar line.For this reason, above-mentioned coupler 39,40,41,42,43,44,45,46 are connected to external contactor C
B1, C
B2, C
B3, C
B4, C
B5, C
B6, C
B7, C
B8Above-mentioned coupler 39,40,41,42,43,44,45 and 46 demonstrate separately-coupling efficiency of 10dB, and further be connected to aerial lug B1, B2, B3, B4, B5, B6, B7 and B8, they can be with 8 subscriber equipmenies, and for example, 8 mobile phones are connected on the testing apparatus 100.
All components and parts of above-mentioned radio frequency cable network 100 all can be at 800MH2 to 22000MH
2Frequency range in work.Minimum from arbitrary A port (for example A1) of this testing apparatus 100 to arbitrary B port (as B4) insert decay (loss) for 57dB to 70dB, also be same from arbitrary B port to any one A port.The degree of unbalance of the insertion loss in all identical function paths is on same frequency in the 1.5dB scope.Isolation between above-mentioned port A1 and the A2 is greater than 55dB.Isolation between any a pair of B port is greater than 53dB.Between any a pair of D port or the isolation between any a pair of E port greater than 37dB, the isolation between the port in any a pair of different switches path should be greater than 40dB.
Generally speaking, the coupling coefficient from arbitrary B port to a relevant monitoring port is that 9dB is to 11dB.From the coupling coefficient of any A port to relevant monitoring port is that 3dB is to 3.5dB.These coupling port also can be used for extending and connect.
Frequency response from arbitrary A port to the passage of B port is at arbitrary 10MH
2Be limited in the 1dB in the operating frequency range.Frequency response from arbitrary A port to the passage of D port is at arbitrary 10MH
2Be limited in the 1dB in the operating frequency range.Frequency response from arbitrary B port to the passage of E port is at arbitrary 10MH
2Limit is in 1dB in the operating frequency range.The frequency response of the passage of the arbitrary B port from any coupling port to correspondence is at arbitrary 10MH
2Frequency range is limited within the 1.5dB.The frequency response of the passage of the arbitrary A port from arbitrary coupling port to correspondence is at arbitrary 10MH
2Be limited in the 1dB in the frequency range.
Furthermore, the voltage standing wave ratio of arbitrary port of linkage interface should be less than 1.35:1, and the power capacity of arbitrary port of this radio frequency cable network should be greater than 2 watts.
Fig. 2 represents the schematic diagram of the testing apparatus of a mobile communication equipment, and it has a radio channel emulator.This testing apparatus 100 is identical with that device shown in Figure 1, and wherein identical label is represented components identical.This testing apparatus 100 comprises: two synthesizer/ power splitters 1,2, its ratio 1:2; A synthesizer/power splitter 9, its ratio are 2:1; A synthesizer/power splitter 10, its ratio are 1:3; And a synthesizer/power splitter 13, its ratio is 3:1.Radio-frequency (RF) switch 11 can be with two kinds of different pattern work, and through aerial lug A1 and A2, (BTS1 BTS2) is connected on the testing apparatus 100 in two base stations.A radio channel emulator 50 is used for the test of performance measurement, and it is connected on this testing apparatus 100.The signal of connector D2 inserts the input 51 of this radio channel emulator 50, and there, signal changes according to loss, delay, decay, and is sent to above-mentioned connector E2 through contact point 52.The signal of connector E1 is linked into the input 53 of this radio channel emulator 50, and there, signal changes according to loss, delay, decay, and 54 is sent to connector D1 through the contact.
In this scheme was arranged, the path that a pair of physical characteristic is identical, direction is opposite similarly was to carry out work in a real wireless environment.Certainly, a normal radio channel emulator is only carried to single direction on each channel or path.
Fig. 3 represents the schematic diagram of the testing apparatus of Wireless Telecom Equipment, and it is connected with a radio channel emulator.Specifically, come handoff procedure is carried out emulation by means of this radio channel emulator 50.This radio channel emulator 50 comprises 4 contacts 51,52,53 and 54, and this testing apparatus 100 comprises and those identical shown in Fig. 1 and 2 elements, identical symbolic representation components identical.Many line is connected to connector Ca
2With circulator 73, contactor E2 and circulator 71, connector Ca
1With circulator 72, and connector E1 and circulator 70.Above-mentioned connector 70,71,72,73rd, so-called circulator, it is made and is had the transmission characteristic of single direction by iron material.Fig. 3 represents between mobile radio station (M1 is to M8) and base station (BTS1 and the BTS2) via 50 two kinds of different paths of above-mentioned radio channel emulator, one paths be between base station BTS 1 and 8 mobile radio stations (M1 is to M8) through one from the contact 51 to 52 channel, another paths be between base station BTS 2 and 8 mobile radio stations (M1 is to M8) through one from the contact 53 to 54 channel.From connector Ca
2The signal that comes at first arrives circulator 73, and most signals are input to synthesizer 62, and 53 to 54 channel is modulated above-mentioned signal through the contact in a real mobile environment, and offers power splitter 63.Half signal conveys is given circulator 73, and wherein majority returns to BTS2.Second half signal is by power splitter 63 input circulators 71, and majority signal is input to connector E2 and 8 mobile radio stations (M1 is to M8).Through connector E2, at first arrive circulator 71 from the signal of a mobile radio station, therefore, majority signal is transferred to path 62,53,54,63.From power splitter 63, the signal of half feeds back to mobile radio station through circulator 71, and second half signal is transported to Ca through circulator 73
2---base station one side.
To connector Ca
1And the path between the E1, situation is also same as described above.Above-mentioned synthesizer 60,62 and merit are divided 61,63 can be relevant with both direction in a channel.Above-mentioned circulator 70,71,72,73 has provided direction, and has reduced the isolation of about 30dB outputing to feedback between the input.Thus, can form respectively, so that only just can start switching between the sub-district by a radio channel emulator 50 from two different channels of a same mobile radio station to two base station.
If two radio channel emulators are arranged, always have 4 channels, so all power splitters and synthesizer all can remove, and reflected signal can be sizable.Two testing apparatuss 100 and 2 radio channel emulators 50 also can be provided for the handoff environment between a kind of sub-district of emulation.
Fig. 4 represents testing apparatus 100,101,102,103,104, the 105 interconnective schematic diagrames of 6 mobile communication equipments.Each testing apparatus 100,101,102,103,104,105 all can be connected with 8 mobile radio stations, thereby a network that comprises 48 mobile radio stations can be tested.Said apparatus 100,101,102 usefulness its connector A1 and A2 are connected respectively to each base station (BTS), can participate in test thereby have 6 base stations (BTS1, BTS2, BTS3, BTS4, BTS5 and BTS6).Set up an integrated testability network of forming by 6 base stations and 48 subscriber equipmenies (UE) thus.As shown in Figure 4, above-mentioned testing apparatus 100,101,102,103,104,105 is by its aerial lug A1, A2, Ca
1, Ca
2, D1, D2, E1, E2 couples together each other.If path loss is acceptable, more testing apparatus can join layout shown in Figure 4 according to aforesaid way, in like manner, also can expand more users equipment (UE) in network, for example: 6:72 or 6:96.
Claims (11)
1. the testing apparatus of a mobile communication equipment (100), be used for testing the mutual communication between mobile communications network base station and the subscriber equipment, wherein, described testing apparatus (100) comprises a plurality of first aerial lugs and a plurality of second aerial lug, the cable in each base station detachably is connected to any one first aerial lug, each subscriber equipment detachably is connected to any one second aerial lug through a cable, it is characterized in that
Above-mentioned testing apparatus (100) also comprises: first synthesizer/power splitter (9) and second synthesizer/power splitter (14);
A plurality of first aerial lugs converge to first synthesizer/power splitter (9);
A plurality of second aerial lugs converge to second synthesizer/power splitter (14);
Described first synthesizer/power splitter (9) links to each other with described second synthesizer/power splitter (14);
And above-mentioned testing apparatus (100) has a step attenuator (7 respectively between each described first aerial lug and described first synthesizer/power splitter (9), 8), between each described second aerial lug and described second synthesizer/power splitter (14), also has a step attenuator (15 respectively, 16,17,18,19,20,21,22);
Above-mentioned testing apparatus (100) also links to each other with the device of carrying control information to it and from its device that extracts measurement data respectively.
2. testing apparatus as claimed in claim 1 is characterized in that, described testing apparatus (100) further comprises: radio-frequency (RF) switch (11), the 3rd synthesizer/power splitter (10) and the 4th synthesizer/power splitter (13);
Described the 3rd synthesizer/power splitter (10) links to each other with described first synthesizer/power splitter (9);
Described the 4th synthesizer/power splitter (13) links to each other with described second synthesizer/power splitter (14);
Described radio-frequency (RF) switch (11) is positioned between described the 3rd synthesizer/power splitter (10) and described the 4th synthesizer/power splitter (13), be used for described the 3rd synthesizer of conducting/power splitter (10) with described the 4th synthesizer/power splitter (13), make the two directly link to each other, perhaps with described the 3rd synthesizer/power splitter (10) and described the 4th synthesizer/power splitter (13) respectively conducting to an outside radio channel emulator (50), make the two pass through this radio channel emulator (50) to link to each other.
3. testing apparatus as claimed in claim 2 is characterized in that,
First output (54) of described the 3rd synthesizer/power splitter (10) conducting to the first input end (53) of described radio channel emulator (50), described the 4th synthesizer/power splitter (13) conducting to described radio channel emulator (50);
Second input (51) of described the 3rd synthesizer/power splitter (10) conducting to second output (52) of described radio channel emulator (50), described the 4th synthesizer/power splitter (13) conducting to described radio channel emulator (50).
4. testing apparatus as claimed in claim 1 is characterized in that, described testing apparatus (100) further comprises: radio-frequency (RF) switch (11), a plurality of pentahapto are grown up to be a useful person/power splitter (1,2) and the 4th a synthesizer/power splitter (13);
Each described pentahapto grows up to be a useful person/and power splitter (1,2) is connected between each described first aerial lug and the described first synthesizer/power splitter (9), and is connected to the radio channel emulator (50) of an outside;
Described the 4th synthesizer/power splitter (13) links to each other with described second synthesizer/power splitter (14);
Described radio-frequency (RF) switch (11) is positioned between described first synthesizer/power splitter (9) and described the 4th synthesizer/power splitter (13), be used for described first synthesizer of direct conducting/power splitter (9) and described the 4th synthesizer/power splitter (13), perhaps with described the 4th synthesizer/power splitter (13) conducting to described radio channel emulator (50), make it pass through described radio channel emulator (50) and described pentahapto to grow up to be a useful person/power splitter (1,2) links to each other.
5. testing apparatus as claimed in claim 4 is characterized in that,
Described pentahapto is grown up to be a useful person/power splitter (1,2) by first connector (73) and first power splitter (62) conducting input (53), by second connector (72) and second power splitter (61) the conducting output (52) of described external radio frequency channel simulator (50) extremely to described external radio frequency channel simulator (50);
Described the 4th synthesizer/power splitter (13) is connected to the output (54) of described external radio frequency channel simulator (50) by the 3rd connector (71) and the 3rd power splitter (63), is connected input (51) from described external radio frequency channel simulator (50) with the 4th power splitter (60) by the 4th connector (70).
6. as claim 4 or 5 described testing apparatuss, it is characterized in that, described testing apparatus (100) grows up to be a useful person at each described pentahapto/power splitter (1,2) and described first synthesizer/power splitter (9) between, further comprise fixed attenuator (3,4).
7. as any described testing apparatus in the claim 1 to 5, it is characterized in that described testing apparatus (100) further comprises coupler (39 between described second synthesizer/power splitter (14) and each second aerial lug, 40,41,42,43,44,45,46).
8. as any described testing apparatus in the claim 1 to 5, it is characterized in that each step attenuator (7,8,15,16,17,18,19,20,21,22) is controlled by attenuator controller (5,6,23,24,25,26,27,28,29,30).
9. testing apparatus as claimed in claim 8, wherein, above-mentioned attenuator controller (5,6,23,24,25,26,27,28,29,30) be connected to above-mentioned step attenuator (7,8,15,16,17 through a RS232 interface, 18,19,20,21,22), thereby make this step attenuator (7,8,15,16,17,18,19,20,21,22) can control by computer.
10. testing apparatus as claimed in claim 8, wherein, the attenuation change of this step attenuator (7,8,15,16,17,18,19,20,21,22) is OdB---60dB.
11. testing apparatus as claimed in claim 1, wherein, a plurality of testing apparatuss (100,101,102,103,104,105) connect together via the 3rd aerial lug.
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| CNB031571948A CN100464602C (en) | 2003-09-18 | 2003-09-18 | Testing device for mobile communication equipment |
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|---|---|---|---|
| CNB031571948A CN100464602C (en) | 2003-09-18 | 2003-09-18 | Testing device for mobile communication equipment |
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| CN100464602C true CN100464602C (en) | 2009-02-25 |
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| CNB031571948A Expired - Fee Related CN100464602C (en) | 2003-09-18 | 2003-09-18 | Testing device for mobile communication equipment |
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| CN101547464B (en) * | 2008-03-28 | 2011-01-12 | 华为技术有限公司 | Wireless test system of virtual outfield |
| CN103929253B (en) * | 2013-12-26 | 2016-10-26 | 天维讯达无线电设备检测（北京）有限责任公司 | RF switching device for Type Approval DFS test |
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