CN106603171A - Terminal receiver bit error rate test method and device - Google Patents

Abstract

The embodiments of the invention provide a terminal receiver bit error rate test method and device. The method comprises the following steps: obtaining configuration parameters of a test channel; according to the configuration parameters, generating a synchronous sequence and a source sequence, and successively sending the synchronous sequence and the source sequence to a terminal to be tested; receiving data returned by the terminal to be tested; and according to the synchronous sequence, determining synchronous points of the data, and according to the synchronous points of the data and the source sequence, determining an bit error rate of a receiver of the terminal to be tested. The terminal receiver bit error rate test method and device provided by the embodiments of the invention can improve the test efficiency and accuracy.

Description

Test method and equipment for terminal receiver bit error rate

technical field

The embodiments of the present invention relate to the technical field of testing, in particular to a method and equipment for testing the bit error rate of a terminal receiver.

Background technique

The terminal network access test requires protocol conformance testing and radio frequency conformance testing to ensure that the terminal performs consistently in the network, and the purpose of the radio frequency conformance test is to test whether the performance of the terminal radio unit meets the standard requirements. Terminal radio frequency conformance test includes transmitter characteristic test and receiver characteristic test, among them, receiver sensitivity is an important index of receiver characteristic, it refers to under the condition of satisfying certain bit error rate requirement, the receiver can The minimum signal strength to receive and function properly.

In the actual test, the test equipment tests the terminal according to the receiver sensitivity limit requirements specified in the test standard. The method is that after the test equipment is connected to the terminal, the test equipment transmits the reference sensitivity power in the standard, and the signal is looped back to the test equipment through the terminal. Finally, the test equipment measures the bit error rate of the terminal receiver, and judges whether the terminal receiver meets the limit requirement in the standard based on the bit error rate.

In the existing terminal receiver bit error rate test method, basically after the test equipment establishes a signaling connection with the terminal, the terminal enters the data loopback mode, and the test equipment performs sliding synchronization on the received data. The data is used for bit error rate statistics. One disadvantage of this method is a large amount of calculation and low test efficiency; another disadvantage is that the bit error rate statistics may be inaccurate due to pseudo-synchronization.

Contents of the invention

Embodiments of the present invention provide a method and equipment for testing the bit error rate of a terminal receiver, which are used to improve the efficiency and accuracy of testing the bit error rate of the terminal receiver.

The first aspect of the embodiments of the present invention provides a method for testing the bit error rate of a terminal receiver, the method comprising:

Obtain the configuration parameters of the test channel;

generating a synchronization sequence and a source sequence according to the configuration parameters, and sequentially sending the synchronization sequence and the source sequence to the terminal to be tested;

receiving data looped back by the terminal under test;

Determining a synchronization point of the data according to the synchronization sequence, and determining a bit error rate of a receiver of the terminal under test according to the synchronization point of the data and the source sequence.

The second aspect of the embodiment of the present invention provides a test device, the device includes:

An acquisition module, configured to acquire configuration parameters of the test channel;

A processing module, configured to generate a synchronization sequence and a source sequence according to the configuration parameters, and sequentially send the synchronization sequence and the source sequence to the terminal to be tested;

A receiving module, configured to receive data looped back by the terminal under test;

A determining module, configured to determine a synchronization point of the data according to the synchronization sequence, and determine a bit error rate of a receiver of the terminal under test according to the synchronization point of the data and the source sequence.

In the embodiment of the present invention, by generating the synchronization sequence and the source sequence, the generated synchronization sequence and the source sequence are sent to the terminal under test in sequence, and the synchronization point of the data looped back by the terminal under test is determined according to the synchronization sequence, so that according to the synchronization point position and the source sequence generated above to determine the bit error rate of the terminal receiver under test, instead of determining the synchronization point of the loopback data through the method of sliding synchronization as in the traditional technology. The problem of large amount of calculation and low test accuracy.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic flow chart of a test method for a terminal receiver bit error rate provided by an embodiment of the present invention;

FIG. 2 is a schematic flowchart of an execution method of step S104 provided by an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a testing device provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a sending submodule provided by an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a determination module provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The terms "comprising" and "having" and any variations thereof in the description and claims of the present invention are intended to cover a non-exclusive inclusion, for example, a process comprising a series of steps or a device of structure need not be limited to the expressly listed Instead, those structures or steps may include other steps or structures not expressly listed or inherent to the process or device.

FIG. 1 is a schematic flowchart of a test method for a bit error rate of a terminal receiver provided by an embodiment of the present invention, and the method can be executed by a test device. As shown in Figure 1, the method provided in this embodiment includes the following steps:

Step S101, acquiring configuration parameters of a test channel.

In this embodiment, the configuration parameters of the test channel include channel type, channel service data length, and time slot offset for sending data. In addition, the specific implementation manner of this step is similar to that of the prior art, and will not be repeated here.

Step S102: Generate a synchronization sequence and a source sequence according to the configuration parameters, and send the synchronization sequence and the source sequence to the terminal under test in sequence.

In this embodiment, after the test device obtains the configuration parameters of the test channel, it first generates two pseudo-noise PN sequences with different period lengths according to the channel service data length of the test channel, wherein one pseudo-noise PN sequence is defined as a synchronization sequence, and is used It is used to detect the synchronization point of the data looped back by the terminal under test. Another pseudo-noise PN sequence is defined as a source sequence, which is used as the source data of the downlink traffic channel to be sent to the terminal under test, and used as reference data for judging the bit error rate of the receiver of the terminal under test. In practical applications, the sum of the period length of the synchronization sequence and the period length of the source sequence is equal to or less than the preset total number of bits, and the total number of bits involved here is the number of bits required by the preset test.

In practical applications, the cycle length of the synchronization sequence can be set to an integer multiple of the length of the channel service data to prevent false synchronization of synchronization point positioning. For example, the cycle length of the synchronization sequence can be set to three times or three times the length of the channel service data above. Of course, this is only for illustration and not for exclusive limitation of the present invention. In addition, in practical applications, if the cycle length of the generated synchronization sequence is not an integer multiple of the channel service data length, the requirement for the cycle length of the synchronization sequence can be ensured by adding "0" at the end of the synchronization sequence.

Further, after the synchronization sequence and the source sequence are generated, the testing device sequentially sends the synchronization sequence and the source sequence to the terminal under test according to the "slot offset for sending data" parameter in the above configuration parameters. Specifically, when sending a synchronization sequence or a source sequence, the test device first intercepts the data of the channel service data length from the synchronization sequence or source sequence according to the above-mentioned "channel service data length" parameter, and then The data is sent at the slot offset.

What needs to be explained here is that when the sum of the period length of the synchronization sequence and the period length of the source sequence is less than the preset total number of bits, the source sequence will be sent cyclically from the beginning after one period length is sent.

Step S103, receiving the data looped back by the terminal under test.

Step S104. Determine the synchronization point of the data according to the synchronization sequence, and determine the bit error rate of the receiver of the terminal under test according to the synchronization point of the data and the source sequence.

FIG. 2 is a schematic flowchart of an execution method of step S104 provided by an embodiment of the present invention. As shown in FIG. 2, step S104 may include the following execution steps:

Step S1. Obtain continuous data whose data length is the same as the cycle length of the synchronization sequence from the data.

Step S2, determine the correlation value between the continuous data and the synchronization sequence, and the size between the correlation value and the first preset threshold, and when the correlation value exceeds the first preset threshold, execute Step S3, otherwise execute step S1.

Step S3, determining that the first data packet received after the continuous data is a synchronization point.

In practical applications, the communication between the test equipment and the terminal under test is in the form of data packets. In step S1, after receiving the data looped back by the terminal under test, continuous data whose period length is the synchronization sequence period length can be extracted from the data by random extraction. Extraction can also be performed according to a preset extraction strategy. For example, in this embodiment, the following extraction strategies may be preferably adopted:

At first the test equipment extracts the data packets whose sum of the data lengths received first from the received data is equal to the cycle length of the synchronization sequence, so that step S2 calculates the correlation value according to these data packets, when the correlation value calculated in the step S2 is less than the preset When the threshold is set, step S1 is triggered again. At this time, the test device deletes the first received data packet in the current data packet according to the order in which the data packets are received, and fills in the last received data packet in the current data packet. The following first data packet, and so on, until the correlation value calculated in step S2 is greater than the preset threshold.

Step S4: Obtain the synchronization point and the data after the synchronization point from the data looped back by the terminal under test, and combine the synchronization point and the data after the synchronization point with the source sequence Matching is performed to determine the bit error rate of the receiver of the terminal under test.

The execution mode and beneficial effects of step S4 are similar to those of the prior art, and will not be repeated here.

In this embodiment, by generating a synchronization sequence and a source sequence, the generated synchronization sequence and source sequence are sent to the terminal under test in sequence, and the synchronization point of the data looped back by the terminal under test is determined according to the synchronization sequence, so that according to the position of the synchronization point and the source sequence generated above to determine the bit error rate of the terminal receiver under test, instead of determining the synchronization point of the loopback data through the method of sliding synchronization as in the traditional technology, therefore, it is possible to avoid the error caused by the method of sliding synchronization The problem of large amount of calculation and low test accuracy.

Fig. 3 is a schematic structural diagram of a testing device provided by an embodiment of the present invention. As shown in Fig. 3, the testing device provided in this embodiment includes:

An acquisition module 11, configured to acquire configuration parameters of the test channel;

The processing module 12 is configured to generate a synchronization sequence and a source sequence according to the configuration parameters, and sequentially send the synchronization sequence and the source sequence to the terminal to be tested;

A receiving module 13, configured to receive data looped back by the terminal under test;

The determining module 14 is configured to determine a synchronization point of the data according to the synchronization sequence, and determine a bit error rate of a receiver of the terminal under test according to the synchronization point of the data and the source sequence.

The configuration parameters include channel service data length, time slot offset for sending data;

Wherein, the processing module 12 includes:

The generation sub-module 121 is used to generate a synchronization sequence whose period length is an integer multiple of the channel service data length and a source sequence whose period length is different from the period length of the synchronization sequence according to the channel service data length of the test channel ;

The sending sub-module 122 is configured to send the synchronization sequence and the source sequence to the terminal under test sequentially according to the time slot offset of the sending data according to the length of the channel service data.

The sending submodule 122 is specifically used for:

According to the length of the channel service data, after sending the synchronization sequence to the terminal under test according to the time slot offset of the sending data, according to the period length of the source sequence, according to the time slot offset of the sending data The source sequence is cyclically sent to the terminal under test.

The test equipment provided in this embodiment can be used to execute the method of the embodiment shown in FIG. 1 , and its execution mode and beneficial effects are similar, and details are not repeated here.

FIG. 4 is a schematic structural diagram of a sending submodule provided by an embodiment of the present invention. As shown in FIG. 4, on the basis of the structure shown in FIG. 3, the sending submodule 122 includes:

An acquisition subunit 1221, configured to acquire continuous data whose data length is the same as the cycle length of the synchronization sequence from the data;

A determining subunit 1222, configured to determine a correlation value between the continuous data and the synchronization sequence, and a size between the correlation value and a first preset threshold; when the correlation value exceeds the first preset threshold When the threshold is set, it is determined that the first data packet received after the continuous data is a synchronization point, otherwise, the process of obtaining the continuous data whose data length is identical to the cycle length of the synchronization sequence from the data is performed step.

The test equipment provided in this embodiment can be used to execute the method of the embodiment shown in FIG. 2 , and its execution mode and beneficial effect are similar, and details are not repeated here.

FIG. 5 is a schematic structural diagram of a determination module provided by an embodiment of the present invention. As shown in FIG. 5, on the basis of the structure shown in FIG. 4, the determination module 14 includes:

An acquisition submodule 141, configured to acquire the synchronization point and data after the synchronization point from the data looped back by the terminal under test;

The determination sub-module 142 is configured to match the synchronization point and the data after the synchronization point with the source sequence, and determine the bit error rate of the receiver of the terminal under test.

The test equipment provided in this embodiment can be used to execute the method of the embodiment shown in FIG. 2 , and its execution mode and beneficial effect are similar, and details are not repeated here.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (10)

1. a kind of method of testing of terminal receiver bit error rate, it is characterised in that include：

Obtain the configuration parameter of test channel；

According to the configuration parameter, synchronizing sequence and source sequence are generated, and the synchronizing sequence and the source sequence are sent out successively Give terminal to be measured；

Receive the data of the terminal loopback to be measured；

The synchronous point of the data, and the synchronous point according to the data and the source sequence are determined according to the synchronizing sequence, Determine the bit error rate of the receiver of the terminal to be measured.

2. method according to claim 1, it is characterised in that the configuration parameter includes channel service data length, sends out Send the slot offset of data；

It is described that synchronizing sequence and source sequence are generated according to the configuration parameter, and by the synchronizing sequence and the source sequence according to It is secondary to be sent to terminal to be measured, including：

According to the channel service data length of the test channel, it is the whole of the channel service data length to generate Cycle Length The synchronizing sequence of several times, and the source sequence that Cycle Length is different from the Cycle Length of the synchronizing sequence；

According to the channel service data length, by the synchronizing sequence and the source sequence, according to the transmission data when Gap skew is sent to successively terminal to be measured.

3. method according to claim 2, it is characterised in that described according to the channel service data length, will be described Synchronizing sequence and the source sequence, according to the slot offset of the transmission data terminal to be measured is sent to successively, including：

According to the channel service data length, the synchronizing sequence is sent to according to the slot offset of the transmission data and is treated After surveying terminal, according to the Cycle Length of the source sequence, the source sequence is circulated according to the slot offset of the transmission data It is sent to the terminal to be measured.

4. the method according to claim 1 or 3, it is characterised in that described that the data are determined according to the synchronizing sequence Synchronous point, including：

The Cycle Length identical continuous data of data length and the synchronizing sequence is obtained from the data；

Determine the correlation between the continuous data and the synchronizing sequence, and the correlation and the first predetermined threshold value it Between size；

When the correlation exceedes first predetermined threshold value, it is determined that first received after the continuous data Packet is synchronous point, otherwise, performs the Cycle Length that data length and the synchronizing sequence are obtained from the data The step of identical continuous data.

5. method according to claim 4, it is characterised in that the synchronous point and the source sequence according to the data Row, determine the bit error rate of the receiver of the terminal to be measured, including：

From the data of the terminal loopback to be measured, the synchronous point and the data after the synchronous point are obtained；

Data after the synchronous point and the synchronous point are matched with the source sequence, the end to be measured is determined The bit error rate of the receiver at end.

6. a kind of test equipment, it is characterised in that include：

Acquisition module, for obtaining the configuration parameter of test channel；

Processing module, for according to the configuration parameter, generating synchronizing sequence and source sequence, and by the synchronizing sequence and described Source sequence is sent to successively terminal to be measured；

Receiver module, for receiving the data of the terminal loopback to be measured；

Determining module, for determining the synchronous point of the data according to the synchronizing sequence, and according to the synchronous point of the data With the source sequence, the bit error rate of the receiver of the terminal to be measured is determined.

7. test equipment according to claim 6, it is characterised in that the configuration parameter includes that channel service data are long Degree, the slot offset for sending data；

The processing module, including：

Submodule is generated, for according to the channel service data length of the test channel, generation Cycle Length to be the channel The synchronizing sequence of the integral multiple of business datum length, and the source sequence that Cycle Length is different from the Cycle Length of the synchronizing sequence Row；

Sending submodule, for according to the channel service data length, by the synchronizing sequence and the source sequence, according to institute The slot offset for stating transmission data is sent to successively terminal to be measured.

8. test equipment according to claim 7, it is characterised in that the sending submodule, specifically for：

According to the channel service data length, the synchronizing sequence is sent to according to the slot offset of the transmission data to be measured After terminal, according to the Cycle Length of the source sequence, source sequence circulation is sent out according to the slot offset of the transmission data Give the terminal to be measured.

9. the test equipment according to claim 6 or 8, it is characterised in that the sending submodule, including：

Subelement is obtained, it is continuous with the Cycle Length identical of the synchronizing sequence for obtaining data length from the data Data；

Determination subelement, for determining the correlation between the continuous data and the synchronizing sequence, and the correlation With the size between the first predetermined threshold value；When the correlation exceedes first predetermined threshold value, it is determined that described continuous First packet received after data is synchronous point, otherwise, perform it is described obtain from the data data length with The step of Cycle Length identical continuous data of the synchronizing sequence.

10. test equipment according to claim 9, it is characterised in that the determining module, including：

Acquisition submodule, for from the data of the terminal loopback to be measured, obtain the synchronous point and the synchronous point it Data afterwards；

Determination sub-module, for the data after the synchronous point and the synchronous point to be matched with the source sequence, Determine the bit error rate of the receiver of the terminal to be measured.