CN101568136A - Method and system for testing performance of base station equipment - Google Patents

Abstract

The invention discloses a performance testing method and system of base station equipment to solve the problem in the prior art that the obtained test results are not fair and objective when testing the performance of base station equipment from various manufacturers. The performance testing system mainly includes a signal generator and a wireless network controller simulator; the performance testing method mainly includes: converting the uniformly configured test data stream into an uplink signal and sending it to the base station equipment to be tested; receiving the base station equipment to be tested The data flow obtained by parsing the uplink signal using uniformly configured parameters; comparing the data flow received from the base station equipment to be tested with the data flow for testing, and obtaining the performance data of the base station equipment to be tested according to the comparison result. The technical solution provided by the invention can judge the performance of the base station equipment fairly and objectively.

Description

Performance testing method and system for base station equipment

technical field

The invention relates to the field of mobile communication, in particular to a performance testing method and system for base station equipment.

Background technique

TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) is a third-generation mobile communication standard proposed by China and one of the three mainstream third-generation mobile communication standards in the world. TD-SCDMA system has high spectral efficiency, low equipment cost and adaptability to changing environment, making its application prospect more and more broad.

In the TD-SCDMA system, base station equipment is a very important part, and its performance directly affects the operation of the entire system, so the selection of base station equipment is extremely important. Many RF (Radio Frequency, radio frequency) test cases in the current base station equipment selection test involve the calculation and comparison of uplink performance data, such as uplink BER (Bit Error Rate, bit error rate) or BLER (BLockError Rate, block error rate ) calculation and comparison, the smaller the BER or BLER, the better the performance of the base station equipment.

Figure 1 shows the system block diagram commonly used by various manufacturers when testing base station equipment. The base station equipment to be tested provides a frame synchronization signal or a clock signal at the beginning of each frame, and sends a trigger (trigger) signal to the signal generator. To ensure the synchronization between the test instrument and the base station equipment to be tested. However, the current test instruments are not yet mature and perfect in supporting the test requirements of base station equipment, so the evaluation of the performance of base station equipment is mainly based on the performance data of base station equipment provided by various manufacturers, for example, using the data output by each manufacturer through the console of the base station The performance of the base station equipment is judged by the BER or BLER obtained through the respective relevant software processing. However, the test process of the base station equipment performance data by various manufacturers is almost a black box, and the objectivity and fairness of the test cannot be guaranteed. And because the test BLER or BER is aimed at the data of a certain service time slot, it may be necessary to use four reference measurement channels with a data rate of 12.2kbps, 64kbps, 144kbps, and 384kbps in the radio frequency test to test the performance of the base station equipment, for example, for NB (Node B , base station) to evaluate the receiver index and demodulation performance. Each manufacturer usually configures the signal generator used according to the business parameter requirements in 3GPP25.142, uses relevant link simulation software such as Matlab, ADS, etc. to generate business data files, uses the instrument supporting software to import them into the instrument, and simulates them through the RF instrument The uplink signal is sent to the NB for testing, so that the final test results obtained by each manufacturer according to their own test procedures are also different. At the same time, due to the influence of commercial interests, it is inevitable that the performance data provided by various manufacturers for the base station equipment is better than the actual performance of the base station equipment, which brings difficulties to judge the performance of the base station equipment fairly and objectively.

Contents of the invention

The invention provides a performance testing method and system of base station equipment to solve the problem in the prior art that the obtained test results are not fair and objective when testing the performance of base station equipment from various manufacturers.

Embodiments of the present invention are realized through the following technical solutions:

An embodiment of the present invention provides a performance testing method for base station equipment, including steps:

Convert the uniformly configured test data stream into an uplink signal and send it to the base station equipment to be tested;

receiving a data stream obtained by parsing the uplink signal by the base station device to be tested using uniformly configured parameters;

Comparing the data flow received from the base station equipment to be tested with the test data flow, and obtaining the performance data of the base station equipment to be tested according to the comparison result.

The embodiment of the present invention also provides a performance test system for base station equipment, including a signal generator and a radio network controller RNC simulator; wherein,

The signal generator is used to convert the uniformly configured test data flow into an uplink signal and send it to the base station equipment to be tested;

The RNC simulator is used to receive the data stream obtained by analyzing the uplink signal by the base station equipment to be tested using uniformly configured parameters, and compare the received data stream with the test data stream, and obtain the data stream to be tested according to the comparison result Measure the performance data of the base station equipment.

The performance testing method and system of the base station equipment provided by the embodiments of the present invention, through the unified configuration of the test data flow and the unified configuration of the parameters of the base station equipment to be tested, the base station equipment to be tested can use the unified configuration during the performance test process of the base station equipment. parameters, and analyze the signal generated by the uniformly configured test data stream, so that the obtained performance data is comparable, thus ensuring the objectivity and notarization of the base station equipment performance judged by the test base station equipment performance data.

Description of drawings

FIG. 1 is a test system used by various manufacturers to test the performance of base station equipment in the prior art;

FIG. 2 is one of the structural diagrams of the test system used to test the performance of the base station equipment according to the embodiment of the present invention;

FIG. 3 is the second structural diagram of the test system used to test the performance of the base station equipment according to the embodiment of the present invention;

Fig. 4 is a flowchart of a method for testing the performance of base station equipment in an embodiment of the present invention.

Detailed ways

Aiming at the deficiencies in the prior art when testing the performance of base station equipment, an embodiment of the present invention proposes a performance testing method and system for base station equipment, which provides a unified platform for testing the performance of base station equipment from various manufacturers, thereby enabling objective Unbiasedly judge the performance of base station equipment. The main implementation principles, specific implementation processes and corresponding beneficial effects of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

2 is a schematic structural diagram of a performance test system for base station equipment in an embodiment of the present invention. As can be seen from the figure, the test system mainly includes the following entities: a signal generator and a radio network controller (RadioNetwork Controller, RNC) simulator. When testing the performance of the base station equipment to be tested, the signal generator and the RNC simulator are connected to the base station equipment to be tested through a radio frequency cable or a synchronization cable, or a wireless connection may be used. The base station equipment to be tested can be one base station equipment or multiple base station equipment, wherein,

The signal generator is configured with test data streams. Different test data streams are configured for different channels, data formats or rate requirements. Each test data stream is identified by channel (such as VPI/VCI/CID) and TFI (Transport Format Index, transmission format indication) for identification, and the test data flow can be saved as a configuration file. When testing the performance of the base station equipment, the signal generator converts the test data stream into a standard TD-SCDMA uplink signal and transmits it to the base station equipment to be tested.

The base station equipment to be tested receives the uplink signal transmitted by the signal generator, uses uniformly configured parameters to analyze and process the received uplink signal, and encapsulates the data stream obtained after the analysis into a data stream in Iub frame format, and passes through the Iub interface sent to the RNC simulator.

RNC simulator configured with the same data flow for testing as in the signal generator. After the RNC emulator receives the data stream of the Iub frame format, the data stream of the Iub frame format is parsed, the data stream obtained by parsing is compared with the corresponding test data stream of its preservation, and the base station equipment is obtained according to the comparison result performance data.

In the above system, the test data stream configured in the signal generator and the RNC simulator can be uniformly configured through the configuration device, as shown in Figure 3, the configuration device is connected with the signal generator and the RNC simulator for Set test data streams corresponding to different channel identifiers and transmission format indications in the device and the RNC simulator, and the test data streams can be saved as configuration files. When the test data flow in the signal generator is changed, the configuration device can be used to modify the test data flow saved in the RNC simulator through the configuration file accordingly, so as to ensure that the test data flow in the RNC simulator is consistent with the signal The test data flow in the generator is consistent. In addition, the configuration device can also be connected with the base station equipment to be tested, and is used for configuring uniform parameters for the base station equipment to be tested, and the parameters are used to parse the received signal into a data stream.

The RNC simulator in the above test system may further include: a first trigger unit and a first statistics unit. Wherein, the first triggering unit is used to trigger the first statistical unit when the length of the data stream obtained by analyzing the base station equipment to be tested reaches a set length; the first statistical unit is used to obtain the setting obtained by analyzing the base station equipment to be tested The length of the data stream is compared with the test data stream, and the performance data of the base station equipment to be tested is obtained according to the comparison result; or, several data streams with a set length obtained by analyzing the base station equipment to be tested are compared with the test data stream respectively , calculate and obtain several performance data according to the comparison result, calculate the average value of the obtained several performance data, and calculate and obtain the performance data of the base station equipment to be tested.

The RNC simulator in the above test system may further include: a second trigger unit and a second statistical unit. Wherein, the second triggering unit is used to trigger the second statistics unit when the time for the base station equipment to be tested to analyze the data flow reaches the set duration; The data flow is compared with the test data flow, and the performance data of the base station equipment to be tested is obtained according to the comparison result; or, the data flow obtained by analyzing the base station equipment to be tested within several set time lengths is compared with the test data flow respectively, A number of performance data are calculated according to the comparison result, and the average value of the obtained performance data is calculated to obtain the performance data of the base station equipment to be tested.

The above test system can test one base station device at a time, and can also test multiple base station devices at a time. If one base station device is tested at a time, it is necessary to ensure that the test data sent to each base station to be tested is consistent, and the parameters in each base station device to be tested are consistent; if multiple base station devices are tested at a time, the unified The configured signal generator sends the test data flow, and ensures that the parameters configured in each base station equipment are consistent.

Taking the performance data of the base station equipment as BER or BLER as an example, the flow of the performance test method of the base station equipment in the embodiment of the present invention will be described in detail, as shown in FIG. 4 , the main implementation process is as follows:

Step 1. The signal generator converts the uniformly configured test data stream into a standard TD-SCDMA uplink signal and transmits it to the base station equipment to be tested.

Standardizing service parameters is a unified requirement of 3GPP testing and is also a basic item of testing. However, testing often requires flexible configuration of various data to implement testing under different links. In order to realize this purpose, in the signal generator used in the present embodiment, the test data of four kinds of reference measurement channels of 12.2kbps, 64kbps, 144kbps, and 384kbps with the data rates of 12.2kbps, 64kbps, 144kbps, and 384kbps that will comply with the 3GPP25. requirements without loss of flexibility.

In step 1, when testing a plurality of base station devices, a signal generator may be used to convert the test data stream into an uplink signal and send it to a plurality of base station devices to be tested. When the uplink signal is transmitted to the base station device under test, the channel identifier and TFI corresponding to the transmission channel where the signal is located are also transmitted to the base station device under test together.

Step 2, the base station equipment to be tested receives the uplink signal transmitted by the signal generator, uses the parameters of the unified configuration to analyze the received uplink signal, and encapsulates the data stream obtained by the analysis into a data stream in Iub frame format, and transmits it through the Iub interface to the RNC simulator.

In this step, when the base station equipment to be tested encapsulates the data flow into the data flow of the Iub frame format, the channel identification corresponding to the channel where the data flow is located and the corresponding TFI are encapsulated together, and are included in the frame header and transmitted to the RNC simulator.

Step 3. The RNC simulator receives the above-mentioned data stream in Iub frame format, analyzes it, and compares the data stream obtained by the analysis with the data stream for testing.

In this step, when the RNC simulator parses the data flow in the Iub frame format, the analysis obtains the transmission channel identifier and TFI, searches for the corresponding configuration file according to the transmission channel identifier and TFI, and obtains the test data flow from the searched configuration file .

Step 4. The RNC simulator calculates and obtains the BER or BLER corresponding to the base station equipment to be tested according to the comparison result of the analyzed data flow and the test data flow.

In the above steps, the data flow obtained by analyzing the base station equipment is compared with the test data flow, and the BER or BLER corresponding to the base station equipment to be tested is calculated according to the comparison result, which can be done by sampling or refreshing. The following two methods are used Further explanation:

The sampling method is to compare the data stream of the set length (or within the set time) analyzed by the base station equipment to be tested with the data stream used for testing, and calculate the BER or BLER of the base station equipment to be tested according to the comparison results. Examples are as follows:

Set the granularity of calculating BER or BLER (that is, set the length or duration of the data stream). For the convenience of calculation, the smallest unit of granularity is a data block (that is, the length of the set data stream includes at least one data block, or the set duration The data received in contains at least one data block). When the data block analyzed by the RNC simulator meets the set granularity requirements, compare the data flow obtained by analyzing the set granularity with the test data flow, and calculate the error corresponding to the error in the service transmission channel according to the comparison result The number of data blocks, BER or BLER can be obtained according to the calculated number of erroneous data blocks.

Refresh method, that is, take several data streams of a set length analyzed by the base station equipment to be tested (or, take the data streams analyzed by the base station equipment to be tested within several set time lengths), and compare them with the test data streams respectively , calculate several BERs or BLERs according to the comparison results, calculate the average value of the obtained several BERs or BLERs, and obtain the BER or BLER of the base station equipment to be tested, for example as follows:

Set the granularity of refreshing BER or BLER (the specific setting method is the same as above, and will not be described in detail here). When the data blocks analyzed by the RNC simulator meet the set granularity requirements, calculate BER or BLER (the specific process is the same as above, not described in detail here); the RNC simulator continues to analyze, when the data blocks obtained by the analysis meet the set requirements When the granularity is required, calculate the BER or BLER, and average the BER or BLER obtained by this calculation with the BER or BLER obtained by the previous calculation, and so on. During this process, the user can set the number of refreshes, that is, the number of times to average the BER or BLER.

The formula for calculating BER or BLER in the above process is as follows:

BER/BLER = number of error bits/total number of bits;

Among them, the number of error bits is obtained by multiplying the errored data blocks in the service transmission channel by the number of bits corresponding to each data block within a calculation granularity; the total number of bits is within a calculation granularity, corresponding to the service transmission channel It is obtained by multiplying all the data blocks in the channel by the number of bits corresponding to each data block.

Considering that there is frame loss during transmission, before calculating BER/BLER, judge whether CFN (Connection Frame Number, connection frame number) is continuous. If not, judge that there is frame loss during transmission. At this time, calculate BER or BLER, it is necessary to record all the bits of the corresponding service transmission channel in the case of frame loss into the numerator and denominator respectively. Among them, the calculation method of the total number of bits corresponding to the service transmission channel in the case of frame loss is: the number of data blocks transmitted per TTI when the frame is lost is equal to the number of data blocks transmitted per TTI when the CFN is continuous, and the total number of lost data blocks is multiplied by each data block The total number of bits in the case of frame loss can be obtained by calculating the number of bits corresponding to the block.

In the above test process, the base station equipment provides frame synchronization signal or clock signal at the beginning of each frame, and sends a trigger (trigger) signal to the signal generator to ensure the synchronization between the instrument and the base station equipment to be tested.

The performance test method and system of the base station equipment provided by the embodiments of the present invention, through the unified configuration of the test data flow and the unified configuration of the parameters of the base station equipment to be tested, in the performance test of the base station equipment, the base station equipment to be tested can use the uniformly configured Parameters, analyze the signal generated by the uniformly configured test data flow, and compare the data flow obtained by the analysis of the base station equipment to be tested with the test data flow, so that the obtained performance data is comparable, thus ensuring the passing Test the objectivity and notarization of base station equipment performance data when judging base station equipment performance.

In addition, the embodiment of the present invention considers that the frame formats of the base station equipment of different manufacturers in the Iub interface will conform to the 3GPP25.427 specification, so the data frames reported by each base station equipment are analyzed uniformly through the RNC simulator connected to the Iub interface. It is simple and feasible to implement in the application.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any skilled person in the technical field can easily think of changes, Replacement or application to other similar devices shall fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (13)

1, a kind of performance test method of base station equipment, it is characterized in that, comprising steps: Convert the uniformly configured test data stream into an uplink signal and send it to the base station equipment to be tested; receiving a data stream obtained by parsing the uplink signal by the base station device to be tested using uniformly configured parameters; Comparing the data flow received from the base station equipment to be tested with the test data flow, and obtaining the performance data of the base station equipment to be tested according to the comparison result. 2. The performance testing method according to claim 1, wherein the data flow received from the base station equipment to be tested is the Iub that the base station equipment to be tested adopts the parameter of uniform configuration to analyze the uplink signal and obtain the Iub Data stream in frame format; Receiving the data flow of the base station equipment to be tested, and comparing the data flow received from the base station equipment to be tested with the data flow for testing, specifically: The radio network controller RNC emulator receives the data stream in the Iub frame format obtained by encapsulating the uplink signal analyzed by the base station equipment to be tested, and analyzes the data stream in the Iub frame format, and combines the data stream obtained by the analysis with the obtained The above test uses data flow for comparison. 3. The performance testing method according to claim 2, wherein the test data stream and the data stream in the Iub frame format carry channel identification and transmission format indication; After the RNC simulator parses the data stream in the Iub frame format, it also includes: obtaining a corresponding test data stream according to the channel identification and transmission format indication obtained by parsing the data stream in the Iub frame format. 4. The performance testing method according to claim 1, wherein the data stream received from the base station device to be tested is compared with the data stream for testing, and the performance data of the base station device to be tested is obtained according to the comparison result, Specifically: Comparing the data stream of the set length received from the base station equipment to be tested with the data stream for testing, and obtaining the performance data of the base station equipment to be tested according to the comparison result; Alternatively, compare several data streams with a set length received from the base station equipment to be tested with the test data streams, obtain several performance data according to the comparison results, and calculate the average value of the several performance data to obtain Performance data of the base station equipment to be tested. 5. The performance testing method according to claim 1, wherein the data stream received from the base station device to be tested is compared with the data stream for testing, and the performance data of the base station device to be tested is obtained according to the comparison result, Specifically: Comparing the data flow received from the base station equipment to be tested with the test data flow within the set time period, and obtaining the performance data of the base station equipment to be tested according to the comparison result; Alternatively, compare the data streams received from the base station equipment to be tested with the test data streams within several set time periods, obtain several performance data according to the comparison results, average the several performance data, and calculate Performance data of the base station equipment to be tested. 6. The performance testing method according to any one of claims 1 to 5, characterized in that there are one or more base station devices to be tested; When there are multiple base station devices to be tested, the data stream received from the base station device to be tested is compared with the data stream for testing, and the performance data of the base station device to be tested is obtained according to the comparison result, specifically: Respectively receiving the data streams of the plurality of base station devices to be tested, and respectively comparing them with the data streams for testing, and obtaining respective performance data of the plurality of base station devices to be tested according to the comparison results. 7. A performance testing system for base station equipment, characterized in that it includes a signal generator and an RNC simulator; wherein, The signal generator is used to convert the uniformly configured test data stream into an uplink signal and send it to the base station equipment to be tested; The RNC simulator is used to receive the data stream obtained by analyzing the uplink signal by the base station equipment to be tested using uniformly configured parameters, and compare the received data stream with the test data stream, and obtain the data stream to be tested according to the comparison result Measure the performance data of the base station equipment. 8. The performance testing system according to claim 7, wherein the data stream received by the RNC simulator from the base station equipment to be tested is a data stream in an Iub frame format, and the RNC simulator is also used for The received data stream in the Iub frame format is parsed. 9. The performance testing system according to claim 8, characterized in that, the test data flow is identified by a channel identifier and a transmission format indication; the channel identifier of the data flow for the test is carried in the data flow of the Iub frame format and transmission format indication; The signal generator is also used to carry, in the uplink signal, a channel identifier and a transmission format indication identifying the data flow for testing; The RNC simulator is also used to obtain the corresponding test data stream according to the channel identification and transmission format indication obtained by parsing the data stream in the Iub frame format. 10. The performance testing system according to claim 7, wherein the RNC simulator comprises: a first trigger unit and a first statistical unit; The first triggering unit is configured to trigger the first statistical unit when the length of the data stream received from the base station equipment to be tested reaches a set length; The first statistical unit is used to compare the received data stream of the set length with the test data stream, and obtain the performance data of the base station equipment to be tested according to the comparison result; The data streams of the set length are compared with the test data streams respectively, several performance data are calculated according to the comparison results, and the performance data of the base station equipment to be tested are calculated by calculating the average value of the several performance data. 11. The performance testing system according to claim 7, wherein the RNC simulator comprises: a second trigger unit and a second statistical unit; The second triggering unit is configured to trigger the second statistical unit when the time for receiving the data stream from the base station equipment to be tested reaches a set duration; The second statistical unit is used to compare the data flow received within the set duration with the test data flow, and obtain the performance data of the base station equipment to be tested according to the comparison result; or, combine several of the set The data streams received within the duration are compared with the test data streams respectively, several performance data are calculated according to the comparison results, and the performance data of the base station equipment to be tested are calculated by averaging the several performance data. 12. The performance testing system according to claim 7, further comprising: A configuration device is configured to configure a unified data flow for testing in the signal generator and the RNC simulator. 13. The performance testing system according to claim 12, wherein the configuring device is further configured to uniformly configure parameters for the base station equipment to be tested.

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