CN106533585B - More PN test methods - Google Patents
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- CN106533585B CN106533585B CN201610948499.8A CN201610948499A CN106533585B CN 106533585 B CN106533585 B CN 106533585B CN 201610948499 A CN201610948499 A CN 201610948499A CN 106533585 B CN106533585 B CN 106533585B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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Abstract
The present invention provides a kind of more PN test methods, comprising the following steps: S1, beginning；S2, load PN1, PN2, PN3 ..., PNn, n=1,2,3 ..., n, PN is pseudo-random sequence；Count, HG, IFG, PG parameter and LoopCount parameter of S3, each PN of configuration, Count is the transmission times of mono signal frame, HG is front interval when signal starts transmission, IFG be signal transmission during frame period, PG is the rear end interval at the end of signal is sent, and LoopCount is global cycle number；S4, transmission is opened；S5, the loading sequence according to PN are sequentially completed the transmission of signal according to each PN corresponding Count, IFG, HG, PG and totality cycle-index LoopCount；S6, end.The beneficial effects of the present invention are: the unicity of single PN test can be improved, frame starting and frame end time are accurately controlled.
Description
Technical Field
The present invention relates to a reception test, and more particularly, to a multi-PN test method.
Background
In order to Test the receiving performance of a DUT (Device Under Test), it is a conventional practice to use the DUT as a receiver, and use a comprehensive tester as a transmitter to transmit signals to the DUT, where each Rx (Receive) Test requires no change in signal, if Rx tests are performed on different signals, a new Test needs to be restarted, and the comprehensive tester is controlled to transmit a new signal, that is, the signal in a single Rx Test of the DUT is constant, so that the processing capability of the DUT to continuously Receive different signals cannot be tested.
The multi-PN test is a scene test that is relatively consistent with the DUT operating in a receiving state, and the integrated tester will send multiple signals in sequence during the test, fig. 1 is a schematic diagram of a single-PN transmitter, and fig. 2 is a schematic diagram of a multi-PN transmitter. The comparison shows that multiple PN are compatible with a single PN, multiple PN can send multiple different signals, and the method is more suitable for a real scene, the sending times of each PN in the multiple PN can be set, and the next PN is sent immediately after one PN is sent until the PN is sent out.
In Rx testing of a DUT, it may be desirable to test whether the DUT is sensitive to signal variations, while multiple PN testing may be achieved by combining configurations of different PNs.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a multi-PN testing method.
The invention provides a multi-PN testing method, which comprises the following steps:
s1, starting;
s2, loading PN1、PN2、PN3… …, PNn, wherein n is 1, 2, 3, … and n, and PN is a pseudorandom sequence;
s3, configuring the Count, HG, IFG and PG parameters of each PN, wherein the Count is the sending times of a single signal frame, HG is the front-end interval when the signal begins to be sent, IFG is the frame interval during the sending period of the signal, and PG is the back-end interval when the signal is sent;
s4, starting sending;
s5, sequentially completing signal transmission according to the PN loading sequence and the Count, IFG, HG and PG corresponding to each PN;
and S6, ending.
As a further improvement of the present invention, assume the nth PN (PN)n) Has a frame length of T (frame)n) If n is 1, 2, 3, …, n, the total transmission time t (sum) in step S5 is:
T(Sum)＝((T(HG1)+(T(frame1)+T(IFG1))*Count1+T(PG1))+
(T(HG2)+(T(frame2)+T(IFG2))*Count2+T(PG2))+
(T(HG3)+(T(frame3)+T(IFG3))*Count3+T(PG3))+
…+
(T(HGn)+(T(framen)+T(IFGn))*Countn+T(PGn)))*LoopCount。
the invention has the beneficial effects that: by the scheme, the single PN test unicity can be improved, and the frame starting time and the frame ending time can be accurately controlled.
Drawings
Fig. 1 is a schematic diagram of a single transmission signal of a conventional single PN transmitter.
Fig. 2 is a schematic diagram of a single transmission signal of a conventional multi-PN transmitter.
Fig. 3 is a diagram of a relationship between multiple PN transmission parameters for a multiple PN test method of the present invention.
Fig. 4 is a flow chart of a multi-PN test method of the present invention.
Detailed Description
The invention is further described with reference to the following description and embodiments in conjunction with the accompanying drawings.
The implementation of multi-PN transmission mainly includes two aspects of signal sequence combination and parameter configuration, firstly, determining a transmission sequence of signals, sequentially loading the signals according to the sequence, where each signal corresponds to a set of configuration items, and the configuration items include the number of times of transmission of a single signal Frame (Count), a Frame interval during transmission of the signal (IFG, Inter-Frame Gap), a front-end interval when the signal starts to be transmitted (HG, Header Gap), a back-end interval when the signal ends to be transmitted (PG, Post Gap), and a total cycle number (LoopCount), and a relationship diagram of these parameters is shown in fig. 2. And after the signals are loaded in sequence, configuring the sending parameter configuration of each signal, transmitting the signals and the configuration to the instrument together, and sending the corresponding signals by the instrument according to the configuration until all the signals are sent. As shown in fig. 4, a specific flowchart of a multi-PN testing method includes the following steps:
s1, starting;
s2, loading PN1、PN2、PN3、……、PNnN is 1, 2, 3, …, n, PN is a pseudo random sequence;
s3, configuring the Count, HG, IFG, PG parameters and LoopCount parameters of each PN, wherein the Count is the sending times of a single signal frame, HG is the front end interval when the signal starts to be sent, IFG is the frame interval during the sending period of the signal, PG is the back end interval when the signal is sent, and LoopCount is the total cycle time;
s4, starting sending;
s5, sequentially completing signal transmission according to the PN loading sequence and the Count, IFG, HG and PG corresponding to each PN;
and S6, ending.
As shown in fig. 3, in the multi-PN transmission, the transmission time can be expressed by a formula, and assuming that the frame length of the nth (n ═ 1, 2, 3, …, n) PN (pnn) is t (frame), the total transmission time t (sum) can be expressed as:
T(Sum)＝((T(HG1)+(T(frame1)+T(IFG1))*Count1+T(PG1))+
(T(HG2)+(T(frame2)+T(IFG2))*Count2+T(PG2))+
(T(HG3)+(T(frame3)+T(IFG3))*Count3+T(PG3))+
…+
(T(HGn)+(T(framen)+T(IFGn))*Countn+T(PGn)))*
LoopCount；
as can be seen from the above formula, the transmission of multiple PNs can be seen as a plurality of transmission parts, each transmission part corresponding to one PN and a set of PN transmission configurations, the apparatus completes each PN according to the transmission sequence and according to the transmission parameters, and repeats this operation LoopCount for several times.
The above formula expresses the functions of parameters such as HG, IFG, Count, PG, LoopCount and the like, and the multi-PN test can be realized by configuring the parameters and combining a corresponding group of PN data.
The multi-PN test can freely control the interval between each PN signal, thereby being capable of exactly controlling the gap size between each signal, and the control is realized by hardware and is very accurate.
The multi-PN testing method provided by the invention can also be used for simulating multi-PN testing approximately by utilizing single PN testing. By combining multiple single PN tests, which are approximately analog to multiple PN tests, the integrated tester sends multiple PNs during a single DUT Rx test, but each PN takes the form of a single PN transmission, one for each configuration, and one for each configuration and transmission involves software operations and instrumentation communications, which are uncontrolled in time, making it difficult to precisely control the gaps between signals, and thus not accurately measure the signal change response capability of the DUT.
The multi-PN testing method provided by the invention has the following advantages:
1. can be used to simulate complex DUT test scenarios in the time dimension.
2. The unicity of single PN test is improved, and the frame start time and the frame end time can be accurately controlled.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (1)
1. A multi-PN test method is characterized in that in order to test the processing capability of a DUT for continuously receiving different signals, the following steps are carried out:
s1, starting;
s2, loading PN1, PN2, PN3, … … and PNn, wherein n =1, 2, 3, … and n, and PN is a pseudorandom sequence;
s3, configuring the Count, HG, IFG, PG parameters and LoopCount parameters of each PN, wherein the Count is the sending times of a single signal frame, HG is the front end interval when the signal starts to be sent, IFG is the frame interval during the sending period of the signal, PG is the back end interval when the signal is sent, and LoopCount is the total cycle time;
s4, starting sending;
s5, sequentially completing signal transmission according to the PN loading sequence and the Count, IFG, HG and PG corresponding to each PN;
s6, ending;
wherein,
suppose the frame length of the nth PN (PNn) is T (frame)n) N =1, 2, 3, …, n, the total time t (sum) of transmission in step S5 is:
T(Sum) = ((T(HG1) + (T(frame1) + T(IFG1)) * Count1 + T(PG1)) +
(T(HG2) + (T(frame2) + T(IFG2)) * Count2 + T(PG2)) +
(T(HG3) + (T(frame3) + T(IFG3)) * Count3 + T(PG3)) +
… +
(T(HGn) + (T(framen) + T(IFGn)) * Countn + T(PGn))) * LoopCount。
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| CN1347230A (en) * | 2000-09-30 | 2002-05-01 | 浮路克网路公司 | Network testing instrument |
| CN1728626A (en) * | 2004-07-27 | 2006-02-01 | 中兴通讯股份有限公司 | Method and device for detecting error code in wireless digital communication system |
| EP1686746A1 (en) * | 2005-01-31 | 2006-08-02 | Agence Spatiale Europeenne | Packet data transmssion over a shared transmission channel |
| CN105743543A (en) * | 2016-04-07 | 2016-07-06 | 长沙威胜信息技术有限公司 | Multipath delay measurement method for power line carrier channel |
-
2016
- 2016-10-26 CN CN201610948499.8A patent/CN106533585B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1347230A (en) * | 2000-09-30 | 2002-05-01 | 浮路克网路公司 | Network testing instrument |
| CN1728626A (en) * | 2004-07-27 | 2006-02-01 | 中兴通讯股份有限公司 | Method and device for detecting error code in wireless digital communication system |
| EP1686746A1 (en) * | 2005-01-31 | 2006-08-02 | Agence Spatiale Europeenne | Packet data transmssion over a shared transmission channel |
| CN105743543A (en) * | 2016-04-07 | 2016-07-06 | 长沙威胜信息技术有限公司 | Multipath delay measurement method for power line carrier channel |
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Address after: 518000 5C, 1, building No. 6, Ting Wei Road, 67 District, Xingdong community, Baoan District Xin'an, Shenzhen, Guangdong. Applicant after: SHENZHEN JIZHI HUIYI TECHNOLOGY CO., LTD. Address before: 518000 Building 2, Zone 2, Block 2, Honghualing Industrial South Zone, 1213 Liuxian Avenue, Taoyuan Street, Nanshan District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN JIZHI HUIYI TECHNOLOGY CO., LTD. |
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