WO2023020133A1

WO2023020133A1 - Communication test method and related device

Info

Publication number: WO2023020133A1
Application number: PCT/CN2022/103343
Authority: WO
Inventors: 尹浩浩; 许海云; 李争峰
Original assignee: 华为技术有限公司
Priority date: 2021-08-19
Filing date: 2022-07-01
Publication date: 2023-02-23
Also published as: CN115714983A

Abstract

Disclosed in the embodiments of the present application are a communication test method and a related device, which are used for improving the accuracy and throughput of a test result. The method in the embodiments of the present application comprises: respectively receiving, on different time slots, reference signals from a terminal device; determining a signal estimation result according to the received reference signals on different time slots; and calculating a test result according to the signal estimation result.

Description

A communication test method and related equipment

This application claims the priority of the Chinese patent application with the application number CN202110956280.3 and the title of the invention "a communication test method and related equipment" filed with the China Patent Office on August 19, 2021, the entire contents of which are incorporated herein by reference In this application.

technical field

The embodiments of the present application relate to the communication field, and in particular, to a communication test method and related equipment.

Background technique

In the process of wireless communication, it is necessary to test the signal. Specifically, multiple positions are set on the same time slot for transmitting reference signals. The terminal device transmits multiple reference signals at these positions, and the network device determines various parameters of the channel between the network device and the terminal device through the multiple reference signals received on the same time slot.

The interval between reference signals may affect the calculation results. Since the existing protocol stipulates the position for transmitting reference signals on the same time slot, the interval between reference signals on the same time slot is fixed. Inappropriate interval between the test results will be inaccurate.

Contents of the invention

Embodiments of the present application provide a communication test method and related equipment, which are used to improve the accuracy and throughput of test results.

In the first aspect, the embodiment of the present application provides a communication testing method, and the execution subject of the method may be a network device, or may be a chip applied in the network device. The following description is made by taking the execution subject as a network device as an example.

The network device receives the auxiliary reference signal and the pre-reference signal from the terminal device in different time slots; the network device determines the signal estimation result according to the auxiliary reference signal and the pre-reference signal; the network device calculates the test result according to the signal estimation result .

Optionally, the reference signals received on different time slots respectively correspond to different pilot symbols. For example, the pre-pilot symbol on one slot receives the reference signal, and the auxiliary pilot symbol on the other slot receives the reference signal.

In the embodiment of the present application, signal estimation and calculation of test results are performed through reference signals on different time slots. Compared with the fixed interval between reference signals on the same time slot, the possibility of the interval between reference signals is improved. By selecting appropriate reference signals in different time slots, the calculation of corresponding parameters can be matched and the accuracy of calculation results can be improved.

In a possible design, the network device calculates the frequency offset test result according to the signal estimation result.

The greater the interval between the reference signals used to calculate the frequency offset test results, the greater the phase difference calculated by the frequency offset test; if the phase difference is greater than or equal to π/2, the calculation results will be inaccurate. In the embodiment of this application, the interval between the reference signals used to calculate the frequency offset test results is reduced by using the reference signals on different time slots, thereby reducing the phase difference, so that the probability that the phase difference is greater than or equal to π/2 decrease, thereby improving the accuracy of the calculation results. Moreover, reducing the above-mentioned interval also reduces the corresponding moving speed between the terminal device and the network device when the frequency offset phase difference reaches π/2, and increases the upper limit of the applicable speed for frequency offset estimation.

The reference signal on the same time slot may include a pre-reference signal and an auxiliary reference signal, and in the same time slot, the time of the pre-reference signal is earlier than the time of the auxiliary reference signal. In a possible design, the network device receives the auxiliary reference signal from the terminal device on the first time slot; the network device receives the pre-reference signal from the terminal device on the second time slot, wherein the second time slot The time is later than the first time slot; the network device determines the signal estimation result according to the auxiliary reference signal from the first time slot and the pre-reference signal from the second time slot.

In the embodiment of the present application, the signal estimation result is determined by the auxiliary reference signal of the previous time slot (the first time slot) and the pre-reference signal of the subsequent time slot (the second time slot), and the signal estimation result can be changed. The spacing between reference signals increases the possibility of spacing between reference signals.

Optionally, if the reference signal is used to calculate the frequency offset test result, the interval between the pre-reference signal and the auxiliary reference signal agreed in the same time slot may be relatively large, resulting in a calculated phase difference greater than or equal to π/2 , resulting in inaccurate calculation results. Through the method of the embodiment of the present application, if the interval between the auxiliary reference signal of the first time slot and the preamble reference signal of the second time slot is smaller than the time slot between the preamble reference signal and the auxiliary reference signal in the same time slot, Through the calculation of the auxiliary reference signal and the pre-reference signal, the calculated phase difference can be reduced, the probability that the phase difference is greater than or equal to π/2 can be reduced, and the accuracy of the calculation result can be improved.

The same time slot may include pre-pilot symbols, first auxiliary pilot symbols and second auxiliary pilot symbols; pre-pilot symbols are used to transmit pre-reference signals, first auxiliary pilot symbols and second auxiliary pilot symbols Symbols are used to transmit Auxiliary Reference Signal references. In a possible design, the network device receives service data from the terminal device on the first auxiliary pilot symbol of the first time slot; the network device receives service data from the terminal device on the second auxiliary pilot symbol of the first time slot. The auxiliary reference signal of the terminal device; the network device receives the pre-reference signal from the terminal device on the pre-pilot symbol of the second time slot; the terminal device determines the signal estimation result according to the auxiliary reference signal and the pre-reference signal.

In the embodiment of the present application, through the auxiliary reference signal on the second auxiliary pilot symbol of the previous time slot (the first time slot), and the The preamble reference signal can accurately determine the signal estimation result, and there is no need to transmit the auxiliary reference signal on the first auxiliary pilot symbol of the first time slot. Therefore, transmitting service data on the first auxiliary pilot symbol increases the data volume of service data that can be transmitted in one time slot, and improves the throughput rate.

In a possible design, the signal estimation result is used to calculate at least one of the time offset test result, signal power and signal-to-interference-noise ratio.

In the embodiment of the present application, the signal estimation results determined by reference signals of different time slots are used to calculate test results such as time offset, which improves the flexibility of the test result calculation method.

In a second aspect, a network device is provided. The network device includes: a receiving unit and a computing unit; the receiving unit is used to: respectively receive reference signals from terminal devices in different time slots; the computing unit is used to: according to different time slots The received reference signal is used to determine the signal estimation result; and the test result is calculated according to the signal estimation result.

For the beneficial effects of the second aspect, please refer to the description of the first aspect, which will not be repeated here.

In a possible design, the calculation unit is specifically configured to: calculate the frequency offset test result according to the signal estimation result.

In a possible design, the receiving unit is specifically configured to: receive an auxiliary reference signal from a terminal device on a first time slot; receive a preamble reference signal from a terminal device on a second time slot; wherein, the first The second time slot is later than the first time slot; the calculation unit is specifically configured to: determine a signal estimation result according to the auxiliary reference signal and the preamble reference signal.

In a possible design, the receiving unit is specifically configured to: receive service data from the terminal device on the first auxiliary pilot symbol of the first time slot; on the second auxiliary pilot symbol of the first time slot, receiving an auxiliary reference signal from the terminal device; wherein, the time of the second auxiliary reference signal is later than the time of the first auxiliary reference signal; on the pre-pilot symbol of the second time slot, receiving the pre-reference signal from the terminal device ; Wherein, the time of the second time slot is later than that of the first time slot; the calculation unit is specifically configured to: determine the signal estimation result according to the auxiliary reference signal and the pre-reference signal.

In a possible design, the calculation unit is specifically configured to: calculate at least one of a time offset test result, a signal power, and a signal-to-interference-noise ratio according to a signal estimation result.

In a third aspect, a chip or chip system is provided, the chip or chip system includes at least one processor and a communication interface, the communication interface is interconnected with at least one processor, and is used to provide program instructions or data for at least one processor; at least one The processor is used to execute program instructions to implement the communication testing method described in any one of the possible designs from the first aspect to the first aspect.

Wherein, the communication interface in the chip may be an input/output interface, a pin or a circuit, and the like.

In a possible implementation, the chip or the chip system described above in the present application further includes at least one memory, and instructions are stored in the at least one memory. The memory may be a storage unit inside the chip, such as a register, a cache, etc., or a storage unit of the chip (eg, a read-only memory, a random access memory, etc.).

In the fourth aspect, the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed, any one of the above-mentioned first aspect and the first aspect is realized. possible design, any one of the communication test methods described.

In the fifth aspect, the embodiment of the present application provides a computer program product, the computer program product includes: computer program code, when the computer program code is executed, any one of the first aspect and the first aspect may be realized design, any one of the communication test methods described.

Description of drawings

FIG. 1 is a schematic diagram of an application scenario of a communication test method provided by a real-time example of the present application;

Fig. 2 is a schematic diagram of pilot symbols;

Fig. 3 is a schematic flow chart of the communication test method provided by the real-time example of the present application;

Fig. 4 is a schematic diagram of the communication test method provided by the real-time example of the present application;

FIG. 5 is a schematic structural diagram of a network device provided in a real-time example of the present application;

FIG. 6 is a schematic structural diagram of a chip provided in a real-time example of the present application.

Detailed ways

Embodiments of the present application provide a communication measurement method and related equipment, which are used to improve the accuracy and throughput of test results.

As shown in FIG. 1 , it is a schematic diagram of a possible network architecture applicable to the embodiment of the present application, including a terminal device 110 and an access network device 120 . The terminal device 110 and the access network device 120 can communicate through the Uu air interface, and the Uu air interface can be understood as a universal interface between the terminal device and the network device (universal UE to network interface). The transmission of the Uu air interface includes uplink transmission and downlink transmission.

Exemplarily, uplink transmission means that the terminal device 110 sends uplink information to the access network device 120 . Wherein, the uplink information may include one or more of uplink data information, uplink control information, and reference signal (reference signal, RS). A channel used to transmit uplink information is called an uplink channel, and the uplink channel may be a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH). The PUSCH is used to carry uplink data, and the uplink data may also be referred to as uplink data information. The PUCCH is used to carry uplink control information (uplink control information, UCI) fed back by the terminal equipment. The UCI may include channel state information (channel state information, CSI), positive acknowledgment (acknowledgment, ACK)/negative acknowledgment (negative acknowledgment, NACK), etc.

Exemplarily, downlink transmission refers to that the access network device 120 sends downlink information to the terminal device 110 . The downlink information may include one or more of downlink data information, downlink control information, and downlink reference signals. The downlink reference signal may be a channel state information reference signal (channel state information reference signal, CSI-RS) or a phase tracking reference signal (phase tracking reference signal, PTRS). The channel used to transmit downlink information is called a downlink channel, and the downlink channel can be a physical downlink shared channel (physical downlink shared channel, PDSCH) or a physical downlink control channel (physical downlink control channel, PDCCH). The PDCCH is used to carry downlink control information (DCI), the PDSCH is used to carry downlink data, and the downlink data may also be called downlink data information.

Optionally, in the network architecture shown in FIG. 1 , a core network device 130 may also be included. Wherein, the terminal device 110 may be connected to the access network device 120 in a wireless manner, and the access network device 120 may be connected to the core network device 130 in a wired or wireless manner. The core network device 130 and the access network device 120 may be independent and different physical devices, or the core network device 130 and the access network device 120 may be the same physical device, and the core network device 130 and the access network device are integrated on the physical device. All/part of the logical functions of the network access device 120.

It should be noted that, in the network architecture shown in FIG. 1 , the terminal device 110 may be fixed or mobile, which is not limited. The network architecture shown in FIG. 1 may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not limited. In the architecture shown in FIG. 1 , the number of terminal devices, access network devices and core network devices is not limited.

The technical solutions in the embodiments of the present application can be applied to various communication systems. For example, the long term evolution (long term evolution, LTE) system, the fifth generation (5th generation, 5G) mobile communication system, and future mobile communication systems.

Some nouns or terms used in this application are explained below, and the nouns or terms are also part of the content of the invention.

1. Terminal equipment

A terminal device may be referred to as a terminal for short, and is also called a user equipment (UE), which is a device with a wireless transceiver function. Terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, drones, balloons and satellites, etc.). The terminal device can be a mobile phone, a tablet computer, a computer with a wireless transceiver function, a virtual reality terminal device, an augmented reality terminal device, a wireless terminal device in industrial control, a wireless terminal device in unmanned driving, a wireless terminal device in telemedicine, etc. Terminal equipment, wireless terminal equipment in smart grid, wireless terminal equipment in transportation security, wireless terminal equipment in smart city, wireless terminal equipment in smart home. Terminal equipment can also be fixed or mobile. The embodiment of the present application does not limit this.

In the embodiment of the present application, the device for realizing the function of the terminal may be a terminal device; it may also be a device capable of supporting the terminal device to realize the function, such as a chip system, and the device may be installed in the terminal device. In the embodiment of the present application, the system-on-a-chip may be composed of chips, or may include chips and other discrete devices. In the technical solutions provided in the embodiments of the present application, the technical solutions provided in the embodiments of the present application will be described by taking the terminal device as an example for realizing the functions of the terminal device.

2. Network equipment

The network device may be an access network device, and the access network device may also be called a radio access network (radio access network, RAN) device, which is a device that provides a wireless communication function for a terminal device. Access network equipment includes, but is not limited to: 5G next-generation base station (generation nodeB, gNB), evolved node B (evolved node B, eNB), baseband unit (baseband unit, BBU), transceiver point (transmitting and receiving point, TRP), transmitting point (transmitting point, TP), the base station in the future mobile communication system or the access point in the WiFi system, etc. The access network device may also be a wireless controller, a centralized unit (centralized unit, CU), and/or a distributed unit (distributed unit, DU) in a cloud radio access network (cloud radio access network, CRAN) scenario, or a network The device may be a relay station, a vehicle-mounted device, and a network device in a future evolved PLMN network.

A terminal device can communicate with multiple access network devices of different technologies, for example, a terminal device can communicate with an access network device supporting long term evolution (LTE), and can also communicate with an access network device supporting 5G , and can also communicate with access network devices supporting LTE and access network devices supporting 5G at the same time. The embodiment of this application is not limited.

3. Communication test.

In the process of wireless communication, the signal is affected by the communication environment, and the state when it is received is different from when it is sent. Therefore, it is necessary to determine the parameters of the communication environment or signals through communication tests, and correct the signals according to these parameters, so as to ensure the quality of communication. Communication testing includes frequency offset testing. In addition to frequency offset testing, it may also include testing of other parameters, such as time offset, signal-to-interference-noise ratio, and signal strength.

4. Frequency offset estimation.

Terminal equipment and network equipment send and analyze signals through the agreed frequency. Since end devices may move relative to network devices, there is a relative velocity between the two. The information sent by the terminal device to the network device will generate a Doppler frequency shift due to the relative speed, resulting in a change in the frequency of the signal, that is, a frequency offset. The network device parses the received information based on the agreed frequency. Due to frequency deviation, the network device cannot parse out the information sent by the terminal device. The process of transmitting information from a terminal device to a network device, and vice versa, has been described above, which will not be repeated here.

Therefore, the phase difference of the frequency offset is determined by frequency offset estimation, and the phase difference is compensated at the receiving end of the information (network equipment or terminal equipment) to eliminate the influence of the frequency offset, so that the receiving end of the information can parse the information smoothly.

The frequency offset estimation method requires the terminal device to send reference signals on at least two pilot symbols of a time slot, determine the signal estimation results (for example: signal matrix) according to the at least two reference signals, and then calculate at least two The frequency offset phase difference between two reference signals can be used to determine the frequency offset between the frequency of the signal received by the receiving end and the agreed frequency. Therefore, frequency correction is performed on the signal at the signal receiving end to ensure communication quality.

In some protocols, the transmission positions of reference signals on the same time slot are stipulated, and these positions are also called pilot positions or pilot symbols. As shown in Figure 2, a time slot is divided into 14 symbols, which are sym0, sym1, ..., sym13 in sequence. In protocol TypeA Pos1, sym2 and sym11 in the agreed time slot are used as pilot symbols; in protocol TypeA Pos2, sym2, sym7 and sym11 in the agreed time slot are used as pilot symbols.

The protocol stipulates the pilot position, resulting in a fixed interval between pilot symbols on the same time slot. The phase difference is positively correlated with the interval between the reference signals, and at the same time is positively correlated with the relative speed between the network equipment and the terminal equipment. With the development of high-speed rail and other transportation, the mobile speed of terminal equipment continues to increase. Under the same pilot position interval, the higher the mobile speed, the larger the calculated frequency offset phase difference. When the speed exceeds a certain range, the frequency offset If the phase difference is greater than or equal to π/2, the phase difference will be mistaken for x-π/2, resulting in wrong frequency correction and affecting communication quality.

For example, for Type A Pos1 in Figure 2, since the interval between pilot positions on the same time slot is 9 symbols, the interval between pilot positions is large, and theoretically it can only support a moving speed of 250km/h; while the design speed of high-speed rail It has reached 300km/h. At this moving speed, use TypeA Pos1 for frequency offset estimation. The frequency offset phase difference is greater than π/2, which will cause wrong frequency correction and affect communication quality.

For example, for TypeA Pos2 in Figure 2, the interval between pilot positions on the same time slot is 5 symbols and 4 symbols, and the interval between pilot positions is small, which can support a higher moving speed. However, one time slot in TypeA Pos2 is used to transmit reference signals by 3 pilot positions, and the number of symbols used to transmit data is 11. Compared with 12 symbols used to transmit data in TypeA Pos1, the cell throughput rate drops.

Similar to the frequency offset test, in the communication test for other communication parameters, the flexibility of the test method is also limited due to the fixed position of the pilot frequency in the existing protocol.

In the embodiment of the present application, the device for realizing the function of the network device may be a network device; it may also be a device capable of supporting the network device to realize the function, such as a chip system, and the device may be installed in the network device. In the technical solution provided by the embodiment of the present application, the technical solution provided by the embodiment of the present application is described by taking the network device as an example for realizing the function of the network device.

As shown in FIG. 3 , FIG. 3 is a schematic flowchart of a communication testing method provided by an embodiment of the present application. The method may be executed by a terminal device and a network device, or may also be executed by a chip in the terminal device and a chip in the network device. The network device in FIG. 3 may be the access network device 120 in FIG. 1 above, and the terminal device may be the terminal device 110 in FIG. 1 above. Taking the frequency offset estimation of the TypeA Pos1 protocol as an example, the method shown in Figure 3 may include the following operations.

301. The network device respectively receives reference signals from the terminal device in different time slots.

As shown in Figure 3, in the TypeA Pos1 protocol, there are two pilot symbols: sym2 and sym11. Among them, sym2 is called a pre-pilot symbol, and sym11 is called an auxiliary pilot symbol. In the embodiment of the present application, in the same time slot, the auxiliary pilot symbol follows the pre-pilot symbol.

It is worth noting that in the protocol TypeA Pos1, sym3 can also be used as the leading pilot symbol, which is not limited here. In the following, the pre-pilot symbol is sym2 as an example for illustration, which does not limit the pre-pilot symbol.

As shown in Figure 4, the network device can receive the reference signal from the terminal device on the auxiliary pilot symbol (sym11) of the (N-1)th time slot, and the pre-pilot symbol of the Nth time slot On (sym2), a reference signal from the terminal equipment is received.

302. The network device determines a signal estimation result according to reference signals received on different time slots.

The network device performs channel estimation according to the reference signal received on the auxiliary pilot symbol (sym11) of the (N-1)th time slot, and obtains the signal estimation result; and according to the pre-pilot symbol (sym2) of the Nth time slot Channel estimation is performed on the received reference signal to obtain a signal estimation result.

303. The network device calculates a test result according to the signal estimation result.

The network device calculates and obtains the test results according to the signal estimation results determined by the reference signals received on the (N-1)th and Nth time slots.

Optionally, as shown in FIG. 4 , the frequency offset estimation result may be calculated according to the signal estimation results determined by the reference signals received on the (N-1)th and Nth time slots.

In the TypeA Pos1 protocol shown in Figure 3, the frequency offset is estimated through the channel estimation results of the pre-pilot symbol (sym2) and the auxiliary pilot symbol (sym11) in a time slot through the method agreed in the protocol, which is used for The interval between the pilot positions for frequency offset estimation (sym2 and sym11 in the same time slot) is 9 symbols.

Through the method provided by the embodiment of the present application, the frequency offset is estimated by the channel estimation results of the auxiliary pilot position of the previous time slot and the pre-pilot position of this time slot, and the pilot position (previous The interval between sym11 of the time slot and sym2) of this time slot is 5.

The method of the embodiment of the present application reduces the interval between the pilot positions used for frequency offset estimation, reduces the size of the frequency offset phase difference, thereby reducing the possibility that the frequency offset phase difference is greater than or equal to π/2 and improve the accuracy of frequency offset estimation. Moreover, reducing the above-mentioned interval also reduces the corresponding moving speed between the terminal device and the network device when the frequency offset phase difference reaches π/2, and increases the upper limit of the applicable speed for frequency offset estimation.

In the protocol TypeA Pos2 in Figure 2, sym2, sym7 and sym11 in the agreed time slot are used as pilot symbols; where sym2 is the pre-pilot symbol, sym7 is the first auxiliary pilot symbol, and sym11 is the second auxiliary pilot symbols; where the first pilot symbol is earlier than the second pilot symbol. In the protocol TypeA Pos2, three pilot positions are set, so the interval between the pilot positions is small.

Apply the communication test method provided by the embodiment of the present application to the protocol TypeA Pos2, the executed steps are as shown in Figure 3, the difference from the protocol TypeA Pos1 is: the auxiliary pilot position in the protocol TypeA Pos1 used in Figure 3 (sym11) is replaced with the second auxiliary pilot position (sym11) in TypeA Pos2.

Same as the protocol TypeA Pos1, in the protocol TypeA Pos2, the pre-pilot symbol can also be sym3, which is not limited here.

It can be seen that, through the method provided by the embodiment of the present application, in the protocol TypeA Pos2, the second auxiliary pilot symbol of the previous slot (slot N-1) and the pre-pilot symbol of the current slot (slot N) can be used, Perform frequency offset estimation; the first auxiliary pilot position originally agreed to be used to transmit reference signals can be used to transmit service data, which increases the number of symbols used to transmit service data in the protocol TypeA Pos2, which also increases the transmission rate of service data and cell throughput.

It is worth noting that Fig. 3 and Fig. 4 take the protocol TypeA Pos1 and the protocol TypeA Pos2 as examples to illustrate the communication test method provided by the embodiment of the present application, and the method of the embodiment of the present application can also be applied to other protocols, such as the protocol TypeA Pos3 etc., there is no limitation here.

It is worth noting that Figure 3 and Figure 4 use frequency offset estimation as an example to illustrate the communication test method provided by the embodiment of this application. In addition to frequency offset estimation, this embodiment of this application can also be used to calculate time offset test results, signal power, signal Interference to noise ratio and other communication parameters.

It is worth noting that in the scenario of frequency offset estimation, it is necessary to minimize the time interval between reference signals, that is, to reduce the time interval between pilot positions used for frequency offset estimation. The frequency offset scenario is just an example, and does not limit the communication test method provided in the embodiment of the present application. As long as the test is performed through reference signals of different time slots, it falls within the scope of the embodiment of the present application. The method in the embodiment of the present application performs tests through reference signals of different time slots, which improves the flexibility of the agreed communication test method and expands the application range of the communication test method.

For example, if the test of a certain parameter of a certain signal needs to maximize the interval between reference signals, you can use the pre-pilot symbol of the previous slot (slot N-1) and the auxiliary signal of this slot (slot N) The pilot symbol is used for communication test, and the test result of this parameter is calculated.

Referring to FIG. 5 , the present application provides a network device 500 in real time, and the network device 500 includes a receiving unit 501 and a computing unit 502 .

The receiving unit 501 is configured to respectively receive reference signals from terminal devices on different time slots;

The calculation unit 502 is configured to determine a signal estimation result according to reference signals received on different time slots; and calculate a test result according to the signal estimation result. The network device 500 is configured to execute actions performed by the network device in the communication testing method of the embodiment shown in FIG. 3 or FIG. 4 .

Please refer to Fig. 6, the embodiment of the present application also provides a chip 600, the chip 600 includes at least one processor 610 and a communication interface 620, the communication interface 620 and at least one processor 610 are interconnected by lines, at least one processor 610 uses It is used to run computer programs or instructions to perform the communication testing method in FIG. 3 or FIG. 4 .

Wherein, the communication interface 620 in the chip may be an input/output interface, a pin or a circuit, and the like.

In a possible implementation, the chip 600 described above in this application further includes at least one memory 630 , and the at least one memory 630 stores instructions. The memory 630 may be a storage unit inside the chip, such as a register, a cache, etc., or a storage unit of the chip (eg, a read-only memory, a random access memory, etc.).

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

Claims

A communication testing method, characterized in that, comprising:

On different time slots, respectively receive reference signals from the terminal equipment;

determining a signal estimation result according to the reference signals received on different time slots;

A test result is calculated according to the signal estimation result.
The method according to claim 1, wherein said calculating test results according to said signal estimation results comprises:

Calculate the frequency offset test result according to the signal estimation result.
The method according to claim 1 or 2, wherein the receiving the reference signals from the terminal equipment respectively in different time slots comprises:

On a first time slot, receiving an auxiliary reference signal from the terminal device;

On a second time slot, receive a preamble reference signal from the terminal device; wherein, the time of the second time slot is later than that of the first time slot;

The determining a signal estimation result according to the reference signals received on different time slots includes:

Determine a signal estimation result according to the auxiliary reference signal and the preamble reference signal.
The method according to claim 1 or 2, wherein the receiving the reference signals from the terminal equipment respectively in different time slots comprises:

receiving service data from the terminal device on the first auxiliary pilot symbol of the first time slot;

On the second auxiliary pilot symbol of the first time slot, receiving an auxiliary reference signal from the terminal device; wherein, the time of the second auxiliary reference signal is later than the time of the first auxiliary reference signal;

Receive a preamble reference signal from the terminal device on the preamble pilot symbol of the second time slot; wherein, the time of the second time slot is later than that of the first time slot;

The determining a signal estimation result according to the reference signals received on different time slots includes:

Determine the signal estimation result according to the auxiliary reference signal and the preamble reference signal.
The method according to any one of claims 1 to 4, wherein the calculation of the test result according to the signal estimation result includes:

According to the signal estimation result, at least one of time offset test result, signal power and signal-to-interference-noise ratio is calculated.
A network device, characterized in that it includes:

receiving unit and computing unit;

The receiving unit is configured to: respectively receive reference signals from terminal devices in different time slots;

The computing unit is used for:

determining a signal estimation result according to the reference signals received on different time slots;

A test result is calculated according to the signal estimation result.
The network device according to claim 6, wherein the computing unit is specifically used for:

Calculate the frequency offset test result according to the signal estimation result.
The network device according to claim 6 or 7, characterized in that,

The receiving unit is specifically used for:

On a first time slot, receiving an auxiliary reference signal from the terminal device;

On a second time slot, receive a preamble reference signal from the terminal device; wherein, the time of the second time slot is later than that of the first time slot;

The calculation unit is specifically used for:

Determine a signal estimation result according to the auxiliary reference signal and the preamble reference signal.
The network device according to claim 6 or 7, characterized in that,

The receiving unit is specifically used for:

receiving service data from the terminal device on the first auxiliary pilot symbol of the first time slot;

On the second auxiliary pilot symbol of the first time slot, receiving an auxiliary reference signal from the terminal device; wherein, the time of the second auxiliary reference signal is later than the time of the first auxiliary reference signal;

Receive a preamble reference signal from the terminal device on the preamble pilot symbol of the second time slot; wherein, the time of the second time slot is later than that of the first time slot;

The calculation unit is specifically used for:

Determine the signal estimation result according to the auxiliary reference signal and the preamble reference signal.
The network device according to any one of claims 6 or 8 to 9, wherein the computing unit is specifically used for:

According to the signal estimation result, at least one of time offset test result, signal power and signal-to-interference-noise ratio is calculated.
A chip, characterized in that it includes at least one processor and a communication interface;

the communication interface for providing program instructions or data to the at least one processor;

The at least one processor is configured to execute the program instructions to implement the method as claimed in any one of claims 1-5.
A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 5 is implemented.
A computer program product, the computer program product comprising: computer program code, when the computer program code is executed, the method according to any one of claims 1 to 5 is implemented.