CN103973376A - Transmitting cross modulation device and method of test terminal - Google Patents
Transmitting cross modulation device and method of test terminal Download PDFInfo
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- CN103973376A CN103973376A CN201310027245.9A CN201310027245A CN103973376A CN 103973376 A CN103973376 A CN 103973376A CN 201310027245 A CN201310027245 A CN 201310027245A CN 103973376 A CN103973376 A CN 103973376A
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Abstract
The invention discloses a transmitting cross modulation device and method of a test terminal. The method comprises the steps that a first power combiner receives the output signal of a first system simulator SS_P, the output signal of a second system simulator SS_S and the interfering carrier, combines the output signal of the SS_P, the output signal of the SS_S and the interfering carrier and transmits a composite signal to a first branching unit; one path is transmitted to a first circulator and the other path is transmitted to a second circulator through the first branching unit; the first circulator transmits the composite signal to a first port of the terminal and transmits the signal output from the first port to a second branching unit; the second circulator transmits the composite signal to a second port of the terminal and transmits the signal output from the second port to a third branching unit; the second branching unit transmits one path to the receiving end of the SS_P and transmits the other path to a carrier frequency analyzing instrument; the third branching unit transmits one path to the receiving end of the SS_S and transmits the other path to the carrier frequency analyzing instrument.
Description
Technical field
The present invention relates to carrier aggregation technology, relate in particular to a kind of device and method of transmitting intermodulation of test terminal.
Background technology
The current fast development along with mobile communication, the amount of information of telex network is increasing, and signal rate constantly increases, and transmission bandwidth is also more and more wider.The 4th Generation Mobile Communication System has adopted key technology carrier aggregation for this reason.
Corresponding this technology, there is different modulation and demodulation methods in each terminal producer.How accurately the quality of effective test, verification terminal product becomes and becomes increasingly complex.For example: WCDMA (Wideband Code Division Multiple Access (WCDMA)) adopts key technology DC-HSUPA (two carrier wave high speed uplink packet access), although applied two ZAP, due to the difference such as physical layer and scheduling thereof, method of testing is completely different.Specifically see terminal consistency test standard TS34.121-1 (V10.4.02012-09).
Carrier aggregation (CA) technology, at maximum 5 carrier waves of Access Network upstream or downstream, current standard is defined 2 carrier waves.Wherein up, downstream signal all has a unique major constituent carrier wave (PCC).Auxiliary component carrier frequency (SCC) can be multiple or not be had.Carrier aggregation is divided into two large classes, with band carrier aggregation and different band carrier aggregation, is wherein divided into again with band continuous carrier polymerization and with the polymerization of band discontinuous carrier with band carrier aggregation.
Transmitting intermodulation refers to carrier wave (CW) interference signal of additionally specifying to a power at the transmitter antenna port of terminal, because transmitter device is non-linear, can produce Intermodulation Interference amount, test useful transmitting and the ratio of the power of Intermodulation Interference signal with identical Measurement bandwidth (Measurement bandwidth of the filter of rectangle).This ratio index is used for weighing the ability that transmitting terminal suppresses the intermodulation product being produced through nonlinear device by useful signal and the interference signal of arrival antenna opening.
For CA test, consider that subscriber equipment (being called for short UE or terminal) adopts different antennae connector and signal map, in international standard, defined terminal is divided into three types:
The first is that each component carrier wave (PCC, SCC) uses independently antenna connector.UE can broad-band antenna of choice for use, only receives for CA signal diversifying.To improve receiving sensitivity.
The second is in antenna applications, and the carrier aggregation signal of uplink uses same antenna connector.
The third is in antenna applications, and the carrier aggregation signal of uplink uses different antennae connector.
For the transmitting intermodulation method of testing of terminal CA, the terminal of corresponding above-mentioned three types, current testing scheme is mainly system simulator (follow-up abbreviation SS) signal, directly the antenna connector port of counterpart terminal component carrier signal mapping.Simple saying is exactly that PCC and the SCC of SS is directly connected to counterpart terminal PCC or SCC antenna opening, and the shortcoming of this scheme is that test formation is more complicated, uses more device.
In actual environment, antenna correspondence is eated dishes without rice or wine, and receives from aerial all signals, and terminal, as required by indoor design demand, can be distinguished and utilize or refusal filtering unlike signal.Such scheme has been ignored this basic capacity of terminal.Be only a kind of situation that CA propagates, some is idealized.
In addition, before spectrum analyzer, utilize at present diverter switch test analysis respectively.And standard regulation is the intermodulation product of interfering carrier (CW) with CA, it is the common intermodulation product that comprises PCC and SCC.Therefore can not intuitively obtain fast result.Particularly occur PCC with the intermodulation product of SCC output when the same frequency, also to calculate its synthetic interference signal and whether exceed standard, very inconvenient.
In a word, existing testing scheme, because test connects complexity, can affect measuring accuracy.Excessive Utopian scheme, is unfavorable for verification terminal basic capacity.Use frequency spectrograph simultaneously, utilize and switch test respectively, inefficiency.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of device and method of transmitting intermodulation of test terminal, the test of can facilitate, intermodulation is launched in accurate realization to terminal.
For solving the problems of the technologies described above, the device of the transmitting intermodulation of a kind of test terminal of the present invention, comprise: the first power combiner device, the first splitter, the first circulator, the second splitter, the second circulator and the 3rd splitter, described the first splitter is connected with the first power combiner device, the first circulator and the second circulator respectively, described the first circulator is also connected with the second splitter, described the second circulator is also connected with the 3rd splitter, wherein:
Described the first power combiner device receives output signal, the output signal of second system simulator SS_S and the interfering carrier of carrier generator output of the first system simulator SS_P, output signal to SS_P, the output signal of SS_S and interfering carrier close road, obtain composite signal, composite signal is transferred to the first splitter;
Described composite signal is divided into two-way by described the first splitter, and a road is transferred to the first circulator, and another road is transferred to the second circulator;
Described the first circulator is transferred to described composite signal the first port of terminal, and described terminal is transferred to the second splitter from the signal of the first port output;
Described the second circulator is transferred to described composite signal the second port of terminal, and described terminal is transferred to the 3rd splitter from the signal of the second port output;
Described the second splitter is divided into two-way by terminal from the signal of the first port output, and a road is transferred to the receiving terminal of described SS_P, and another road is transferred to carrier frequency analyzer;
Described the 3rd splitter is divided into two-way by terminal from the signal of the second port output, and a road is transferred to the receiving terminal of described SS_S, and another road is transferred to described carrier frequency analyzer.
Further, the major constituent carrier wave PCC sending and receiving antenna port that the first port of described terminal is terminal, the auxiliary component carrier wave SCC sending and receiving antenna port that the second port of described terminal is terminal.
Further, the PCC sending and receiving that the first port of described terminal is terminal and receive diversity signal antenna port, the SCC sending and receiving that the second port of described terminal is terminal and receive diversity signal antenna port.
Further, also comprise the second power combiner device, described the second power combiner device is connected with described the second splitter and the 3rd splitter respectively, wherein:
The signal that described the second splitter is transferred to carrier frequency analyzer is to be transferred to described the second power combiner device, and the signal that described the 3rd splitter is transferred to carrier frequency analyzer is to be transferred to described the second power combiner device equally;
Described the second power combiner device closes road to the signal of described the second splitter and the transmission of the 3rd splitter, and the signal behind Jiang He road is transferred to described carrier frequency analyzer.
Further, also comprise the 4th splitter and the 5th splitter, described the 4th splitter is connected with described SS_P, the first power combiner device and terminal respectively, and described the 5th splitter is connected with described SS_S, the first power combiner device and terminal respectively, wherein:
Described the 4th splitter carries out shunt to the output signal of described SS_P, and a road is transferred to described the first power combiner device, and another road is transferred to the PCC receive diversity signal antenna port of terminal;
Described the 5th splitter carries out shunt to the output signal of described SS_S, and a road is transferred to described the first power combiner device, and another road is transferred to the SCC receive diversity signal antenna port of terminal.
Further, a kind of device of transmitting intermodulation of test terminal, comprise: the first power combiner device, the first splitter, the first circulator and the second splitter, described the first splitter is connected with the first power combiner device and the first circulator respectively, described the first circulator is also connected with the second splitter, wherein:
Described the first power combiner device receives output signal, the output signal of second system simulator SS_S and the interfering carrier of carrier generator output of the first system simulator SS_P, output signal to SS_P, the output signal of SS_S and interfering carrier close road, obtain composite signal, composite signal is transferred to the first splitter;
Described composite signal is divided into two-way by described the first splitter, and a road is transferred to the first circulator, and another road is transferred to the second port of terminal;
Described the first circulator is transferred to described composite signal the first port of terminal, and described terminal is transferred to the second splitter from the signal of the first port output;
Described the second splitter is divided into three tunnels by terminal from the signal of the first port output, and a road is transferred to the receiving terminal of described SS_P, and a road is transferred to the receiving terminal of described SS_S, and Third Road is transferred to carrier frequency analyzer.
Further, the major constituent carrier wave PCC sending and receiving that the first port of described terminal is terminal and auxiliary component carrier wave SCC sending and receiving antenna port, the PCC that the second port of described terminal is terminal and SCC receive diversity signal antenna port.
Further, a kind of method of transmitting intermodulation of test terminal, comprising:
The interfering carrier of the output signal to the first system simulator SS_P, the output signal of second system simulator SS_S and carrier generator output closes road, obtains composite signal;
Described composite signal is divided into two-way, and a road is transferred to the first port of terminal, and another road is transferred to the second port of terminal;
Terminal is divided into two-way from the signal of the first port output, and a road is transferred to the receiving terminal of described SS_P, and another road is transferred to carrier frequency analyzer;
Terminal is divided into two-way from the signal of the second port output, and a road is transferred to the receiving terminal of described SS_S, and another road is transferred to described carrier frequency analyzer.
Further, the major constituent carrier wave PCC sending and receiving antenna port that the first port of described terminal is terminal, the auxiliary component carrier wave SCC sending and receiving antenna port that the second port of described terminal is terminal.
Further, the PCC sending and receiving that the first port of described terminal is terminal and receive diversity signal antenna port, the SCC sending and receiving that the second port of described terminal is terminal and receive diversity signal antenna port.
Further, also comprise:
Terminal is closed to road from signal and the terminal of the first port output from the signal of the second port output, and the signal behind Jiang He road is transferred to described carrier frequency analyzer.
Further, also comprise:
The output signal of described SS_P is carried out to shunt, and wherein the interfering carrier of the output signal of Yi road and SS_S and carrier generator output closes road, obtains described composite signal, and another road is transferred to the PCC receive diversity signal antenna port of terminal;
The output signal of described SS_S is carried out to shunt, and wherein the interfering carrier of the output signal of Yi road and SS_P and carrier generator output closes road, obtains described composite signal, and another road is transferred to the SCC receive diversity signal antenna port of terminal.
Further, a kind of method of transmitting intermodulation of test terminal, comprising:
The interfering carrier of the output signal to the first system simulator SS_P, the output signal of second system simulator SS_S and carrier generator output closes road, obtains composite signal;
Described composite signal is divided into two-way, and a road is transferred to the first port of terminal, and another road is transferred to the second port of terminal;
Terminal is divided into three tunnels from the signal of the first port output, and a road is transferred to the receiving terminal of described SS_P, and a road is transferred to the receiving terminal of described SS_S, and Third Road is transferred to carrier frequency analyzer.
Further, the major constituent carrier wave PCC sending and receiving that the first port of described terminal is terminal and auxiliary component carrier wave SCC sending and receiving antenna port, the PCC that the second port of described terminal is terminal and SCC receive diversity signal antenna port.
In sum, testing scheme of the present invention is succinct, accurate, convenient, and can be on a device, the polytype test assignment that the standard of completing specifies.
Brief description of the drawings
Fig. 1 is the connection layout of the testing scheme for the first terminal type of embodiment of the present invention;
Fig. 2 is the connection layout of the testing scheme for the second terminal type of embodiment of the present invention;
Fig. 3 is the connection layout of the testing scheme for the third terminal type of embodiment of the present invention;
Fig. 4 is the connection layout of the device for multiple terminal type of embodiment of the present invention;
Fig. 5 is the flow chart of the method for the transmitting intermodulation of the test terminal of embodiment of the present invention.
Embodiment
For dissimilar terminal, the testing scheme of the transmitting intermodulation of the terminal to present embodiment describes respectively below.
For the terminal of the first type and the third type, the device of the transmitting intermodulation of the test terminal of present embodiment, comprise: the first power combiner device, the first splitter, the first circulator, the second splitter, the second circulator and the 3rd splitter, the first splitter is connected with the first power combiner device, the first circulator and the second circulator respectively, the first circulator is also connected with the second splitter, the second circulator is also connected with the 3rd splitter, wherein:
The first power combiner device receives output signal, the output signal of second system simulator SS_S and the interfering carrier of carrier generator output of the first system simulator SS_P, output signal to SS_P, the output signal of SS_S and interfering carrier close road, obtain composite signal, composite signal is transferred to the first splitter;
Composite signal is divided into two-way by the first splitter, and a road is transferred to the first circulator, and another road is transferred to the second circulator;
The first circulator is transferred to composite signal the first port of terminal, and terminal is transferred to the second splitter from the signal of the first port output;
The second circulator is transferred to composite signal the second port of terminal, and terminal is transferred to the 3rd splitter from the signal of the second port output;
The second splitter is divided into two-way by terminal from the signal of the first port output, and a road is transferred to the receiving terminal of SS_P, and another road is transferred to carrier frequency analyzer;
The 3rd splitter is divided into two-way by terminal from the signal of the second port output, and a road is transferred to the receiving terminal of SS_S, and another road is transferred to carrier frequency analyzer.
As shown in Figure 1, for the terminal of the first type, PCC sending and receiving antenna port (Tx/Rx1) _ p that the first port of terminal is terminal, SCC sending and receiving antenna port (Tx/Rx1) _ s that the second port of terminal is terminal.The output signal of the output Tx of the first system simulator SS_P is transferred to the 4th splitter, the 4th splitter carries out shunt to the output signal of SS_P, the first via is transferred to the first power combiner device, and the second tunnel is transferred to the PCC receive diversity signal antenna port Rx2_P of terminal.The output signal of the output Tx of second system simulator SS_S is transferred to the 5th splitter, the 5th splitter carries out shunt to the output signal of SS_S, the first via is transferred to the first power combiner device, and the second tunnel is transferred to the SCC receive diversity signal antenna port Rx2_S of terminal.
The Rx2_p that the output signal of the first system simulator SS_P accesses terminal by the 4th splitter, the Rx2_s that the output signal of second system simulator SS_S accesses terminal by the 5th splitter, completes terminal diversity and receives, and improves terminal capabilities.
The first power combiner device receives first via signal, the first via signal of the 5th splitter and the interfering carrier of carrier generator output of the 4th splitter, the signal that the first power combiner device completes CA signal and interfering carrier synthesizes, obtain composite signal, meet CA and CW interference requirement that international standard is described.Only avoided in existing scheme synthetic PCC respectively to add CW, and SCC adds CW two paths of signals, existing scheme is owing to processing respectively, and the error of two power combiner devices that use in reality can affect measuring accuracy.
Composite signal is transferred to the first splitter by the first power combiner device, and composite signal is divided into two-way by the first splitter, and first via composite signal is transferred to the first circulator, and the second road composite signal is transferred to the second circulator.The first circulator is transferred to first via composite signal (the Tx/Rx1) _ p of terminal, and terminal is transferred to the second splitter from the signal of (Tx/Rx1) _ p output.The second circulator is transferred to the second road composite signal (the Tx/Rx1) _ s of terminal, and terminal is transferred to the 3rd splitter from the signal of (Tx/Rx1) _ s output.
This law execution mode accesses respectively the terminal antenna port of PCC and SCC signal map by two circulators, complete terminal demodulation.Also realize and add CW to disturb to terminal simultaneously.
The second splitter is divided into two-way by terminal from the signal of (Tx/Rx1) _ p output, and the first via is transferred to the receiving terminal Rx of SS_P, and the second tunnel is transferred to carrier frequency analyzer; The 3rd splitter is divided into two-way by terminal from the signal of (Tx/Rx1) _ s output, and the first via is transferred to the receiving terminal Rx of SS_S, and the second tunnel road is transferred to carrier frequency analyzer.
In present embodiment, antenna connector mouth (the Tx/Rx1) _ p of terminal and (Tx/Rx1) _ s by the circulator connecting separately, the Rx of splitter connecting system simulator SS_P, SS_S, realize the demodulation of SS respectively.
Present embodiment also comprises the second power combiner device, the second power combiner device is connected with the second splitter and the 3rd splitter respectively, the signal that the second tunnel of the second splitter is transferred to carrier frequency analyzer is to be transferred to the second power combiner device, and the signal that the second tunnel of the 3rd splitter is transferred to carrier frequency analyzer is to be transferred to the second power combiner device equally; The second power combiner device closes road to the signal of the second splitter and the transmission of the 3rd splitter, and the signal behind Jiang He road is transferred to carrier frequency analyzer.
Terminal antenna connector mouth (Tx/Rx1) _ p and (Tx/Rx1) _ s access respectively the second power combiner device by the circulator, the splitter that connect separately respectively, total intermodulation product and the terminal CA transmitted signal of the second power combiner device output, also can analyze by the direct Output rusults of carrier frequency analyzer, avoid will distinguishing test analysis by diverter switch in existing scheme inefficient drawback.
Certainly, in the time there is abnormal problem, before carrier frequency analyzer, increasing a switch, can distinguish the intermodulation product that antenna connector mouth (the Tx/Rx1) _ p of test terminal and (Tx/Rx1) _ s produce, is the problem which part produces to judge.
As shown in Figure 3, for the terminal of the third type, the first port of terminal is PCC sending and receiving and receive diversity signal antenna port (Tx/Rx1) _ pRx2_s, the SCC sending and receiving that the second port of terminal is terminal and receive diversity signal antenna port (Tx/Rx1) _ sRx2_P.The output signal of the output Tx of the first system simulator SS_P is transferred to the first power combiner device, the output signal of the output Tx of second system simulator SS_S is transferred to the first power combiner device, and the interfering carrier of carrier generator outputs to the first power combiner device.
The first power combiner device receives the output signal of SS_P, output signal and the interfering carrier of SS_S, complete the synthetic of CA and interfering carrier, obtain composite signal, meet CA and CW interference requirement that international standard is described, avoid only synthesizing respectively PCC in existing scheme and added CW, and SCC adds CW two paths of signals, and because existing scheme is processed respectively, the error of two power combiner devices of use can affect measuring accuracy.
Composite signal is transferred to the first splitter by the first power combiner device, and composite signal is divided into two-way by the first splitter, and first via composite signal is transferred to the first circulator, and the second road composite signal is transferred to the second circulator.The first circulator is transferred to first via composite signal (the Tx/Rx1) _ pRx2_s of terminal, and terminal is transferred to the second splitter from the signal of (Tx/Rx1) _ pRx2_s output.The second circulator is transferred to the second road composite signal (the Tx/Rx1) _ sRx2_P of terminal, and terminal is transferred to the 3rd splitter from the signal of (Tx/Rx1) _ sRx2_P output, complete terminal demodulation, also realize and add CW to disturb to terminal simultaneously.
The second splitter is divided into two-way by terminal from the signal of (Tx/Rx1) _ pRx2_s output, and the first via is transferred to the receiving terminal Rx of SS_P, and the second tunnel is transferred to carrier frequency analyzer; The 3rd splitter is divided into two-way by terminal from the signal of (Tx/Rx1) _ sRx2_P output, and the first via is transferred to the receiving terminal Rx of SS_S, and the second tunnel road is transferred to carrier frequency analyzer.
Present embodiment also comprises the second power combiner device, the second power combiner device is connected with the second splitter and the 3rd splitter respectively, the signal that the second tunnel of the second splitter is transferred to carrier frequency analyzer is to be transferred to the second power combiner device, and the signal that the second tunnel of the 3rd splitter is transferred to carrier frequency analyzer is to be transferred to the second power combiner device equally; The second power combiner device closes road to the signal of the second splitter and the transmission of the 3rd splitter, and the signal behind Jiang He road is transferred to carrier frequency analyzer.
Terminal antenna connector mouth (Tx/Rx1) _ sRx2_P and (Tx/Rx1) _ pRx2_s access respectively the second power combiner device by circulator, splitter respectively, total intermodulation product and the terminal CA transmitted signal of the second power combiner device output, also can analyze by the direct Output rusults of spectrum analyzer, by spectrum analyzer Direct Analysis result, avoid will distinguishing test analysis by diverter switch in existing scheme inefficient drawback.The scheme of this execution mode, compared with existing scheme, has reduced splitter, has effectively reduced measure error in cost-saving.
Certainly, in the time going wrong, before spectrum analyzer, increasing a switch, can distinguish the intermodulation product that test terminal antenna connector mouth (Tx/Rx1) _ sRx2_P and (Tx/Rx1) _ pRx2_s produce, is the problem which part produces to judge.
For the terminal of the second type, the device of the transmitting intermodulation of a kind of test terminal of present embodiment, comprise: the first power combiner device, the first splitter, the first circulator and the second splitter, the first splitter is connected with the first power combiner device and the first circulator respectively, the first circulator is also connected with the second splitter, wherein:
The first power combiner device receives output signal, the output signal of second system simulator SS_S and the interfering carrier of carrier generator output of the first system simulator SS_P, output signal to SS_P, the output signal of SS_S and interfering carrier close road, obtain composite signal, composite signal is transferred to the first splitter;
Composite signal is divided into two-way by the first splitter, and a road is transferred to the first circulator, and another road is transferred to the second port of terminal;
The first circulator is transferred to composite signal the first port of terminal, and terminal is transferred to the second splitter from the signal of the first port output;
The second splitter is divided into three tunnels by terminal from the signal of the first port output, and a road is transferred to the receiving terminal of SS_P, and a road is transferred to the receiving terminal of SS_S, and Third Road is transferred to carrier frequency analyzer.
As shown in Figure 2, the major constituent carrier wave PCC sending and receiving that the first port of terminal is terminal and auxiliary component carrier wave SCC sending and receiving antenna ports (Tx/Rx1) _ p/s, the PCC that the second port of terminal is terminal and SCC receive diversity signal antenna port Rx2_p/s.
The output signal of the output Tx of the first system simulator SS_P is transferred to the first power combiner device, the output signal of the output Tx of second system simulator SS_S is transferred to the first power combiner device, and the interfering carrier of carrier generator output be transferred to the first power combiner device, the first power combiner device closes road, the signal that completes CA signal and interfering carrier is synthetic, obtains composite signal; Meet CA and CW interference requirement that international standard is described.By the first splitter, symphysis signal is divided into two-way again, the PCC sending and receiving that one tunnel the first circulator accesses terminal and SCC sending and receiving antenna port (Tx/Rx1) _ p/s, the PCC that another road directly accesses terminal and SCC receive diversity signal antenna port Rx2_p/s, complete terminal demodulation.Also realize and add CW to disturb to terminal simultaneously.
The output signal of antenna port (the Tx/Rx1) _ p/s of terminal, outputs to the receiving terminal Rx of SS_P and the receiving terminal Rx of SS_S by the first circulator through the second splitter, realizes terminal signalling demodulation.An other road of the second splitter connects spectrum analyzer, also can carry out signal analysis by the direct Output rusults of spectrum analyzer, and the circuit that present embodiment is succinct forms, and greatly improves measuring accuracy, has also saved cost simultaneously.
As shown in Figure 4, the device for multiple terminal type of present embodiment, the first switch and second switch are set, the first end m of the first switch is connected to the Tx of SS_P, the second end b is connected to the 4th splitter, the 3rd end a is connected to the first power combiner device, the first end n of second switch connects the Tx of SS_S, the second end d is connected to the 5th splitter, the 3rd end c is connected to the first power combiner device, when the first end of the first switch is communicated with the second end, and when the first end of second switch is communicated with the second end, same Fig. 4 of connection scheme of test, for the terminal of the first type.When the first switch first end is communicated with the 3rd end, and the first end of second switch is while being communicated with the 3rd end, and same Fig. 5 of connection scheme of test, for the terminal of the third type, completes the measurement of corresponding types terminal.
Same principle, for the terminal of the second type, connects and composes scheme by test and only needs a circulator, a power combiner, and two splitters, increase corresponding connecting valve and just can realize, and do not repeat.
As shown in Figure 5, present embodiment also provides a kind of method of transmitting intermodulation of test terminal, comprising:
Step 501: the interfering carrier of the output signal to the first system simulator SS_P, the output signal of second system simulator SS_S and carrier generator output closes road, obtains composite signal;
Step 502: composite signal is divided into two-way, and a road is transferred to the first port of terminal, and another road is transferred to the second port of terminal;
Step 503: terminal is divided into two-way from the signal of the first port output, and a road is transferred to the receiving terminal of SS_P, and another road is transferred to carrier frequency analyzer;
Step 504: terminal is divided into two-way from the signal of the second port output, and a road is transferred to the receiving terminal of described SS_S, and another road is transferred to carrier frequency analyzer.
For the first terminal type, the major constituent carrier wave PCC sending and receiving antenna port that the first port of terminal is terminal, the auxiliary component carrier wave SCC sending and receiving antenna port that the second port of terminal is terminal.
Also comprise for the first terminal type: the output signal of SS_P is carried out to shunt, wherein the interfering carrier of the output signal of Yi road and SS_S and carrier generator output closes road, obtain composite signal, another road is transferred to the PCC receive diversity signal antenna port of terminal; The output signal of SS_S is carried out to shunt, and wherein the interfering carrier of the output signal of Yi road and SS_P and carrier generator output closes road, obtains composite signal, and another road is transferred to the SCC receive diversity signal antenna port of terminal.
For the second terminal type, the PCC sending and receiving that the first port of terminal is terminal and receive diversity signal antenna port, the SCC sending and receiving that the second port of described terminal is terminal and receive diversity signal antenna port.
The method also comprises: terminal is closed to road from signal and the terminal of the first port output from the signal of the second port output, and the signal behind Jiang He road is transferred to described carrier frequency analyzer.
The method of the transmitting intermodulation of the another kind of test terminal of present embodiment, comprising:
The interfering carrier of the output signal to the first system simulator SS_P, the output signal of second system simulator SS_S and carrier generator output closes road, obtains composite signal;
Composite signal is divided into two-way, and a road is transferred to the first port of terminal, and another road is transferred to the second port of terminal;
Terminal is divided into three tunnels from the signal of the first port output, and a road is transferred to the receiving terminal of SS_P, and a road is transferred to the receiving terminal of SS_S, and Third Road is transferred to carrier frequency analyzer.
The major constituent carrier wave PCC sending and receiving that the first port of above-mentioned terminal is terminal and auxiliary component carrier wave SCC sending and receiving antenna port, the PCC that the second port of terminal is terminal and SCC receive diversity signal antenna port.
Present embodiment comprises following initial setup procedure in the time measuring the transmitting intermodulation of LTE Advanced terminal under state of carrier aggregation:
The first step: the antenna connector that connects SS and UE;
According to Fig. 1, Fig. 2 or Fig. 3, use the device of present embodiment, select by type a kind of.
Second step: SS cell parameter is set, according to TS36.508[7] 4.4.3 joint;
The 3rd step: downstream signal PCC initial setting up, according to TS36.521 annex C.0, C.1 and C.3.0, upward signal is according to annex H.1and H.3.0.;
The 4th step: propagation conditions is according to TS36.521 accessories B .0.;
The 5th step: guarantee that UE is at state 3A-RF, according to TS36.508[7] clause5.2A.2., clause 6.7A.1.4.3. is pressed in information content definition.
The detailed process of measuring comprises:
Step a: configuration SCC according to TS36.521 annex C.0, C.1 with annex all down physical channels C.3.0, except PHICH;
Step b:SS configuration SCC is according to TS36.508[7] 5.2A.4, the clause of message content definition is pressed 6.7A.1.4.3;
Step c:SS activates SCC and activates MAC-CE (referring to TS36.321[13], Section 5.13,6.1.3.8) by transmission, waits at least 2 seconds (with reference to TS36.133 clause 8.3.3.2 bar);
Steps d: SS sends the uplink scheduling information of each ascending HARQ process, the UL RMC that is C_RNTI scheduling by the DCI form 0 of PDCCH is according to form 6.7A.1.4.1-1, because UE does not have payload and will send without the data of loopback, the filling bit that UE sends on up link MAC is up reference measure channel (RMC);
Step e:PCC and SCC constantly send out up-link power control " upwards " order, send to UE, until UE sends the PUMAX level that reaches, allow UE under 200ms at least to reach PUMAX level;
Step f: measure the rectangular filter average power of UE, of short duration for TDD time slot during, there is no useful signal and the intermodulation product tested;
Step g: setup and use TS36.521 shows 6.7A.1-1, in the frequency of the interference signal of the first skew lower than F
cA_low;
Step h: the CW signal level of the interference of setting is shown 6.7A.1-1 according to TS36.521;
Step I: signal and the above up-link carrier aggregate signal of search intermodulation product, then measure the intermodulation that rectangular filter sends, the average power of these two signals, and calculate its ratio;
Step .j: the frequency of the interference signal of the first skew of setup and use TS36.521 table 6.7A.1-1 is higher than F
cA_high;
Step k: signal and the above up-link carrier aggregate signal of search intermodulation product below, then measure rectangular filter and send intermodulation, the average power of these two signals, and calculate its ratio;
Reuse the measurement of second skew in TS36.521 table 6.7A.1-1.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that multiple calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or the multiple modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
This is only the preferred embodiments of the present invention above, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (14)
1. the device of the transmitting intermodulation of a test terminal, comprise: the first power combiner device, the first splitter, the first circulator, the second splitter, the second circulator and the 3rd splitter, described the first splitter is connected with the first power combiner device, the first circulator and the second circulator respectively, described the first circulator is also connected with the second splitter, described the second circulator is also connected with the 3rd splitter, wherein:
Described the first power combiner device receives output signal, the output signal of second system simulator SS_S and the interfering carrier of carrier generator output of the first system simulator SS_P, output signal to SS_P, the output signal of SS_S and interfering carrier close road, obtain composite signal, composite signal is transferred to the first splitter;
Described composite signal is divided into two-way by described the first splitter, and a road is transferred to the first circulator, and another road is transferred to the second circulator;
Described the first circulator is transferred to described composite signal the first port of terminal, and described terminal is transferred to the second splitter from the signal of the first port output;
Described the second circulator is transferred to described composite signal the second port of terminal, and described terminal is transferred to the 3rd splitter from the signal of the second port output;
Described the second splitter is divided into two-way by terminal from the signal of the first port output, and a road is transferred to the receiving terminal of described SS_P, and another road is transferred to carrier frequency analyzer;
Described the 3rd splitter is divided into two-way by terminal from the signal of the second port output, and a road is transferred to the receiving terminal of described SS_S, and another road is transferred to described carrier frequency analyzer.
2. device as claimed in claim 1, is characterized in that, the major constituent carrier wave PCC sending and receiving antenna port that the first port of described terminal is terminal, the auxiliary component carrier wave SCC sending and receiving antenna port that the second port of described terminal is terminal.
3. device as claimed in claim 1, is characterized in that, the PCC sending and receiving that the first port of described terminal is terminal and receive diversity signal antenna port, the SCC sending and receiving that the second port of described terminal is terminal and receive diversity signal antenna port.
4. install as claimed in claim 2 or claim 3, it is characterized in that, also comprise the second power combiner device, described the second power combiner device is connected with described the second splitter and the 3rd splitter respectively, wherein:
The signal that described the second splitter is transferred to carrier frequency analyzer is to be transferred to described the second power combiner device, and the signal that described the 3rd splitter is transferred to carrier frequency analyzer is to be transferred to described the second power combiner device equally;
Described the second power combiner device closes road to the signal of described the second splitter and the transmission of the 3rd splitter, and the signal behind Jiang He road is transferred to described carrier frequency analyzer.
5. device as claimed in claim 2, it is characterized in that, also comprise the 4th splitter and the 5th splitter, described the 4th splitter is connected with described SS_P, the first power combiner device and terminal respectively, described the 5th splitter is connected with described SS_S, the first power combiner device and terminal respectively, wherein:
Described the 4th splitter carries out shunt to the output signal of described SS_P, and a road is transferred to described the first power combiner device, and another road is transferred to the PCC receive diversity signal antenna port of terminal;
Described the 5th splitter carries out shunt to the output signal of described SS_S, and a road is transferred to described the first power combiner device, and another road is transferred to the SCC receive diversity signal antenna port of terminal.
6. the device of the transmitting intermodulation of a test terminal, comprise: the first power combiner device, the first splitter, the first circulator and the second splitter, described the first splitter is connected with the first power combiner device and the first circulator respectively, and described the first circulator is also connected with the second splitter, wherein:
Described the first power combiner device receives output signal, the output signal of second system simulator SS_S and the interfering carrier of carrier generator output of the first system simulator SS_P, output signal to SS_P, the output signal of SS_S and interfering carrier close road, obtain composite signal, composite signal is transferred to the first splitter;
Described composite signal is divided into two-way by described the first splitter, and a road is transferred to the first circulator, and another road is transferred to the second port of terminal;
Described the first circulator is transferred to described composite signal the first port of terminal, and described terminal is transferred to the second splitter from the signal of the first port output;
Described the second splitter is divided into three tunnels by terminal from the signal of the first port output, and a road is transferred to the receiving terminal of described SS_P, and a road is transferred to the receiving terminal of described SS_S, and Third Road is transferred to carrier frequency analyzer.
7. device as claimed in claim 6, it is characterized in that, the major constituent carrier wave PCC sending and receiving that the first port of described terminal is terminal and auxiliary component carrier wave SCC sending and receiving antenna port, the PCC that the second port of described terminal is terminal and SCC receive diversity signal antenna port.
8. a method for the transmitting intermodulation of test terminal, comprising:
The interfering carrier of the output signal to the first system simulator SS_P, the output signal of second system simulator SS_S and carrier generator output closes road, obtains composite signal;
Described composite signal is divided into two-way, and a road is transferred to the first port of terminal, and another road is transferred to the second port of terminal;
Terminal is divided into two-way from the signal of the first port output, and a road is transferred to the receiving terminal of described SS_P, and another road is transferred to carrier frequency analyzer;
Terminal is divided into two-way from the signal of the second port output, and a road is transferred to the receiving terminal of described SS_S, and another road is transferred to described carrier frequency analyzer.
9. method as claimed in claim 8, is characterized in that, the major constituent carrier wave PCC sending and receiving antenna port that the first port of described terminal is terminal, the auxiliary component carrier wave SCC sending and receiving antenna port that the second port of described terminal is terminal.
10. method as claimed in claim 8, is characterized in that, the PCC sending and receiving that the first port of described terminal is terminal and receive diversity signal antenna port, the SCC sending and receiving that the second port of described terminal is terminal and receive diversity signal antenna port.
11. methods as described in claim 9 or 10, is characterized in that, also comprise:
Terminal is closed to road from signal and the terminal of the first port output from the signal of the second port output, and the signal behind Jiang He road is transferred to described carrier frequency analyzer.
12. methods as claimed in claim 9, is characterized in that, also comprise:
The output signal of described SS_P is carried out to shunt, and wherein the interfering carrier of the output signal of Yi road and SS_S and carrier generator output closes road, obtains described composite signal, and another road is transferred to the PCC receive diversity signal antenna port of terminal;
The output signal of described SS_S is carried out to shunt, and wherein the interfering carrier of the output signal of Yi road and SS_P and carrier generator output closes road, obtains described composite signal, and another road is transferred to the SCC receive diversity signal antenna port of terminal.
The method of the transmitting intermodulation of 13. 1 kinds of test terminals, comprising:
The interfering carrier of the output signal to the first system simulator SS_P, the output signal of second system simulator SS_S and carrier generator output closes road, obtains composite signal;
Described composite signal is divided into two-way, and a road is transferred to the first port of terminal, and another road is transferred to the second port of terminal;
Terminal is divided into three tunnels from the signal of the first port output, and a road is transferred to the receiving terminal of described SS_P, and a road is transferred to the receiving terminal of described SS_S, and Third Road is transferred to carrier frequency analyzer.
14. methods as claimed in claim 13, it is characterized in that, the major constituent carrier wave PCC sending and receiving that the first port of described terminal is terminal and auxiliary component carrier wave SCC sending and receiving antenna port, the PCC that the second port of described terminal is terminal and SCC receive diversity signal antenna port.
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| CN201310027245.9A CN103973376A (en) | 2013-01-24 | 2013-01-24 | Transmitting cross modulation device and method of test terminal |
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| CN201310027245.9A CN103973376A (en) | 2013-01-24 | 2013-01-24 | Transmitting cross modulation device and method of test terminal |
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