Method and apparatus for feeding back measurement result by using measurement reference signal, and electronic device

Abstract

The present application provides a method and apparatus for feeding back a measurement result by using measurement reference signals, and an electronic device and a computer-readable storage medium. The measurement reference signals include a virtual measurement reference signal and a transmission measurement reference signal. The method is applied to a terminal device, and the method comprises: receiving a transmission measurement reference signal; using the transmission measurement reference signal to obtain a corresponding transmission measurement result; and on the basis of a preset relationship between a virtual measurement reference signal and the transmission measurement reference signal, obtaining, by means of the transmission measurement result, a feedback measurement result corresponding to the virtual measurement reference signal.

Description

Methods, apparatus, and electronic devices that use measurement reference signals to feed back measurement results

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202411441282.9, filed on October 14, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of wireless communication, and more specifically, to a method and apparatus, electronic device, and computer-readable storage medium for feeding back measurement results using a measurement reference signal. Background Technology

[0004] As wireless communication evolves, the number of antennas will increase significantly. This increase leads to a substantial rise in the overhead of the Channel State Information–Reference Signal (CSI-RS). Ultra-large-scale multi-antenna arrays, such as 1024-array Multiple Input Multiple Output (MIMO) systems, will reach 4096 arrays or even higher in the future, resulting in extremely high CSI-RS reference signal overhead.

[0005] To reduce the overhead of CSI-RS, researchers have proposed reference signal compression schemes in the time, frequency, and spatial domains, as well as more comprehensive reference signal sharing schemes. However, regardless of the scheme, since the reference signal needs to be shared by multiple user terminals, it is necessary to consider how to configure the density of the reference signal in the time, frequency, and spatial domains.

[0006] If the CSI-RS density configuration strategy is designed to meet the worst-case scenario for the terminals, then when a small number of terminals require high time, frequency, and spatial density, the CSI-RS overhead will be very high, making it impossible to effectively control the reference signal overhead and reducing system efficiency. However, if a high compression ratio configuration strategy is adopted, the performance of some terminals will be very poor. Therefore, this contradiction is difficult to reconcile and has become a significant bottleneck factor restricting the improvement of system performance. Summary of the Invention

[0007] This application aims to provide a method, apparatus, electronic device, and computer-readable storage medium for feeding back measurement results using a measurement reference signal, in order to solve the problem of low communication efficiency caused by high measurement reference signal density in wireless communication.

[0008] According to one aspect of this application, a method for feeding back measurement results using a measurement reference signal is proposed, applied to a terminal device. The measurement reference signal includes a virtual measurement reference signal and a transmitted measurement reference signal. The method includes: receiving the transmitted measurement reference signal; obtaining a corresponding transmitted measurement result using the transmitted measurement reference signal; and obtaining a measurement result corresponding to the virtual measurement reference signal through the transmitted measurement result based on a preset relationship between the virtual measurement reference signal and the transmitted measurement reference signal.

[0009] According to some embodiments, the virtual measurement reference signal and the transmission measurement reference signal are related as a whole set and a subset; or the virtual measurement reference signal is a signal obtained by processing the transmission measurement reference signal through a preset first function.

[0010] According to some embodiments, the transmission measurement reference signal includes a first transmission measurement reference signal and a second transmission measurement reference signal, wherein the virtual measurement reference signal is a signal obtained by linearly processing the first transmission measurement reference signal and the second transmission measurement reference signal; the virtual measurement reference signal is a signal obtained by linearly processing the first transmission measurement reference signal and the second transmission measurement reference signal after processing the first transmission measurement reference signal through a preset first function; the virtual measurement reference signal is a signal obtained by linearly processing the second transmission measurement reference signal and the first transmission measurement reference signal after processing the second transmission measurement reference signal through a preset second function; or the virtual measurement reference signal is a signal obtained by linearly processing the results of the first transmission measurement reference signal and the second transmission measurement reference signal after processing the results of the first transmission measurement reference signal and the second transmission measurement reference signal through preset third and fourth functions respectively.

[0011] According to some embodiments, the transmission measurement result includes a first transmission measurement result and a second transmission measurement result. Based on the relationship between the preset virtual measurement reference signal and the transmission measurement reference signal, a measurement result corresponding to the virtual measurement reference signal is obtained through the transmission measurement result, including: based on the relationship between the preset virtual measurement reference signal and the first transmission measurement reference signal and the second transmission measurement reference signal, a measurement result corresponding to the virtual measurement reference signal is obtained through the first transmission measurement result and the second transmission measurement result.

[0012] According to some embodiments, before obtaining the measurement result corresponding to the virtual measurement reference signal through the transmission measurement result based on the preset relationship between the virtual measurement reference signal and the transmission measurement reference signal, the method further includes: receiving configuration information, wherein the configuration information includes the relationship between the virtual measurement reference signal and the transmission measurement reference signal.

[0013] According to some embodiments, the measurement reference signal includes at least one of the following: a channel state information measurement signal, a synchronization signal, and / or a probe signal.

[0014] According to some embodiments, the method further includes: using the measurement results to perform quantitative feedback of signal state information.

[0015] According to some embodiments, the first transmission measurement reference signal is a periodic reference signal, and the second transmission measurement reference signal is an aperiodic reference signal.

[0016] According to one aspect of this application, a method for feeding back measurement results using a measurement reference signal is proposed, applied to a wireless node. The measurement reference signal includes a virtual measurement reference signal and a transmitted measurement reference signal. The method includes: configuring the relationship between the virtual measurement reference signal and the transmitted measurement reference signal; and sending the transmitted measurement reference signal to a terminal so that the terminal obtains a measurement result corresponding to the virtual measurement reference signal based on the transmitted measurement result obtained from the transmitted measurement reference signal and the relationship.

[0017] According to some embodiments, the virtual measurement reference signal and the transmission measurement reference signal are related as a whole set and a subset; or the virtual measurement reference signal is a signal obtained by processing the transmission measurement reference signal through a preset first function.

[0018] According to some embodiments, the transmission measurement reference signal includes a first transmission measurement reference signal and a second transmission measurement reference signal, wherein the virtual measurement reference signal is a signal obtained by linearly processing the first transmission measurement reference signal and the second transmission measurement reference signal; the virtual measurement reference signal is a signal obtained by linearly processing the first transmission measurement reference signal and the second transmission measurement reference signal after processing the first transmission measurement reference signal through a preset first function; the virtual measurement reference signal is a signal obtained by linearly processing the second transmission measurement reference signal and the first transmission measurement reference signal after processing the second transmission measurement reference signal through a preset second function; or the virtual measurement reference signal is a signal obtained by linearly processing the results of the first transmission measurement reference signal and the second transmission measurement reference signal after processing them through preset third and fourth functions respectively.

[0019] According to one aspect of this application, an apparatus for feeding back measurement results using a measurement reference signal is provided. The measurement reference signal includes a virtual measurement reference signal and a transmitted measurement reference signal. The apparatus includes: a signal receiving unit for receiving the transmitted measurement reference signal; a transmitted measurement result obtaining unit for obtaining a corresponding transmitted measurement result using the transmitted measurement reference signal; and a measurement result obtaining unit for obtaining a measurement result corresponding to the virtual measurement reference signal based on a preset relationship between the virtual measurement reference signal and the transmitted measurement reference signal, through the transmitted measurement result.

[0020] According to one aspect of this application, an apparatus for feeding back measurement results using a measurement reference signal is proposed. The measurement reference signal includes a virtual measurement reference signal and a transmitted measurement reference signal. The apparatus includes: a configuration unit for configuring the relationship between the virtual measurement reference signal and the transmitted measurement reference signal; and a transmission unit for transmitting the transmitted measurement reference signal to a terminal, so that the terminal obtains a measurement result corresponding to the virtual measurement reference signal based on the transmitted measurement result obtained from the transmitted measurement reference signal and the relationship.

[0021] According to one aspect of this application, an electronic device is provided, comprising: a processor; and a memory storing a computer program that, when executed by the processor, causes the processor to perform the method as described in any of the preceding embodiments.

[0022] According to one aspect of this application, a computer-readable storage medium is provided that stores computer-readable instructions thereon, which, when executed by a processor, cause the processor to perform the method as described in any of the preceding embodiments.

[0023] According to the embodiments of this application, without transmitting a virtual measurement reference signal, a measurement result corresponding to the virtual measurement reference signal is obtained based on the relationship between the virtual measurement reference signal and the transmitted measurement reference signal, as well as the measurement result corresponding to the transmitted measurement reference signal, thereby resolving the contradiction between reference signal overhead and measurement performance in wireless communication.

[0024] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The above and other objectives, features, and advantages of this application will become more apparent by referring to the accompanying drawings and describing exemplary embodiments in detail.

[0026] Figure 1 shows a schematic diagram of a communication system according to an example embodiment of this application.

[0027] Figure 2 shows a timing diagram of a channel state information measurement reference signal measurement according to an example embodiment of this application.

[0028] Figure 3 shows a flowchart of a method for feeding back measurement results using a measurement reference signal according to an example embodiment of this application.

[0029] Figure 4 shows a flowchart of another method for feeding back measurement results using a measurement reference signal according to an example embodiment of this application.

[0030] Figure 5 illustrates a schematic diagram of the generation process of a virtual measurement reference signal according to an example embodiment of this application.

[0031] Figure 6 illustrates a schematic diagram of a process for measuring channel state information according to an example embodiment of this application.

[0032] Figure 7 illustrates a schematic diagram of the relationship between a virtual measurement reference signal and a transmitted measurement reference signal according to an example embodiment of this application.

[0033] Figure 8 illustrates a schematic diagram of the relationship between another virtual measurement reference signal and a transmitted measurement reference signal according to an example embodiment of this application.

[0034] Figure 9 illustrates a schematic diagram of the relationship between another virtual measurement reference signal and a transmitted measurement reference signal according to an example embodiment of this application.

[0035] Figure 10 illustrates a schematic diagram of the relationship between another virtual measurement reference signal and a transmitted measurement reference signal according to an example embodiment of this application.

[0036] Figure 11a shows a schematic diagram of a port for transmitting a measurement reference signal according to an example embodiment of this application.

[0037] Figure 11b shows a schematic diagram of another port for transmitting a measurement reference signal according to an example embodiment of this application.

[0038] Figure 12 shows a block diagram of an apparatus for feeding back measurement results using a measurement reference signal according to an example embodiment of this application.

[0039] Figure 13 shows a block diagram of another apparatus for feeding back measurement results using a measurement reference signal according to an example embodiment of this application.

[0040] Figure 14 illustrates an electronic device according to an exemplary embodiment of this application. Detailed Implementation

[0041] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same drawings in the figures show the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0042] The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of these specific details, or other methods, components, materials, apparatus, or operations may be employed. In these cases, well-known structures, methods, apparatuses, implementations, materials, or operations will not be shown or described in detail.

[0043] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0044] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0045] The specific embodiments according to this application will now be described in detail with reference to the accompanying drawings.

[0046] Figure 1 illustrates a schematic diagram of a communication system according to an example embodiment of this application. The communication system shown in Figure 1 includes a wireless access network device and a terminal device. The terminal device connects wirelessly to a wireless node to access the mobile communication system. The terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted, or on water, or in the air on airplanes, balloons, or satellites. This application does not limit the application scenarios of the terminal device.

[0047] Terminal devices can also be referred to as terminals, user equipment, mobile stations, mobile terminals, etc. Terminal devices include, but are not limited to, mobile phones, tablets, computers with wireless transceiver capabilities, virtual reality terminal devices, augmented reality terminal devices, wireless terminals in industrial control, wireless terminals in autonomous driving, wireless terminals in remote surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes. Wireless nodes can be wireless access devices, base stations, evolved base stations, transceiver points, next-generation base stations in 5G mobile communication systems, base stations in future mobile communication systems, or access nodes in Wi-Fi systems, etc. They can also be modules or units that perform some of the functions of a base station; for example, they can be centralized units or distributed units. Therefore, the embodiments of this application do not limit the specific technologies and specific device forms used in the terminal devices and wireless nodes.

[0048] It should be noted that the communication system shown in Figure 1 may also include other network devices not shown, such as wireless relay devices and wireless backhaul devices. Furthermore, the embodiments of this application do not limit the number of wireless nodes and terminal devices.

[0049] In the embodiments of this application, the execution entity can be a wireless node and a terminal device, or it can be a module (such as a chip) applied to a network device and a module (such as a chip) applied to a terminal device. For ease of description, this application uses a base station as a wireless node and a UE (User Equipment) as a terminal device. In order to communicate with the base station, the UE needs to establish a wireless connection with the base station.

[0050] The configuration for Channel State Information (CSI) reporting typically includes a resource configuration for the Channel State Information-Reference Signal (CSI-RS) used for channel measurements, referred to as the Channel Measurement Resource (CMR). This configuration specifies the reference signal object for the channel measurement targeted by this measurement task. Similarly, the configuration for CSI reporting typically includes a resource configuration for interference measurements, referred to as the Interference Measurement Resource (IMR). This configuration includes the reference signal object for the interference measurement targeted by this measurement task. In conventional methods, one or more sets of actually transmitted CSI-RS resources are typically designated as the IMR. The embodiments of this application can be used not only for channel measurements but also for interference measurements.

[0051] Figure 2 shows a timing diagram of a channel state information measurement reference signal measurement according to an example embodiment of the present application. As shown in Figure 2, in step S201, the base station sends the configuration information of the channel state information measurement reference signal to the UE.

[0052] In some embodiments, the configuration information includes a virtual measurement reference signal and a transmitted measurement reference signal, as well as the relationship between the virtual measurement reference signal and the transmitted measurement reference signal. The virtual measurement reference signal is configured as a channel measurement resource, and the transmitted measurement reference signal is configured as an interference measurement resource.

[0053] In some embodiments, the transmission measurement reference signal includes only one type of transmission measurement reference signal. In other embodiments, the transmission measurement reference signal includes two types of transmission measurement reference signals, for example, a first transmission measurement reference signal and a second transmission measurement reference signal.

[0054] In practice, the virtual measurement reference signal is a reference signal with a relatively higher time-frequency spatial density, the first transmission measurement reference signal is a periodic reference signal with a relatively lower time-frequency spatial density, and the second transmission measurement reference signal is a signal that is non-periodic in the time domain and has lower frequency and spatial densities than the virtual measurement reference signal.

[0055] Because the virtual measurement reference signal has a high density, it is not actually transmitted. However, it is configured as a Channel Measurement Resource (CMR), so the measurement feedback of Channel State Information (CSI) is actually based on the measurement results corresponding to the virtual measurement reference signal.

[0056] In this embodiment, although the virtual measurement reference signal is not actually transmitted, the measurement result corresponding to the virtual measurement reference signal can still be calculated by the measurement result of the relationship between the virtual measurement reference signal and the transmitted measurement reference signal.

[0057] As shown in Figure 2, in step S203, the base station sends a transmission measurement reference signal to the UE.

[0058] In step S205, the UE uses the transmission measurement reference signal to measure channel state information, and obtains the measurement result corresponding to the virtual measurement reference signal based on the relationship between the virtual measurement reference signal and the transmission measurement reference signal and the channel state information.

[0059] In step S207, the UE sends the measurement results to the base station.

[0060] Figure 3 shows a flowchart of a method for feeding back measurement results using a measurement reference signal according to an example embodiment of this application. The method for feeding back measurement results using a measurement reference signal according to an example embodiment of this application will be described in detail below with reference to Figure 3.

[0061] According to an embodiment of this application, the method shown in FIG3 is applied to a terminal device, and the measurement reference signal in the method includes a virtual measurement reference signal and a transmitted measurement reference signal. As shown in FIG3, the method includes steps S301, S303, and S305.

[0062] In step S301, the transmission measurement reference signal is received.

[0063] According to embodiments of this application, the measurement reference signal includes, but is not limited to, channel state information measurement signal, synchronization signal, and / or probe signal.

[0064] In step S303, the corresponding transmission measurement result is obtained using the transmission measurement reference signal.

[0065] In step S305, based on the relationship between the preset virtual measurement reference signal and the transmitted measurement reference signal, the measurement result corresponding to the virtual measurement reference signal is obtained by transmitting the measurement result.

[0066] According to an embodiment of this application, before step S305, configuration information needs to be received, wherein the configuration information includes the relationship between the virtual measurement reference signal and the transmitted measurement reference signal.

[0067] In a specific embodiment, the virtual measurement reference signal and the transmitted measurement reference signal are related as a whole set and a subset.

[0068] In other embodiments, the virtual measurement reference signal is a signal obtained by processing the transmission measurement reference signal through a preset first function.

[0069] According to an embodiment of this application, the transmission measurement reference signal includes a first transmission measurement reference signal and a second transmission measurement reference signal.

[0070] In some embodiments, both the first transmission measurement reference signal and the second transmission measurement reference signal are subsets of the virtual measurement reference signal;

[0071] In other embodiments, the virtual measurement reference signal is a signal obtained by linearly processing the first transmission measurement reference signal and the second transmission measurement reference signal.

[0072] For example, a virtual measurement reference signal is a signal obtained by linearly superimposing or aggregating a first transmission measurement reference signal and a second transmission measurement reference signal.

[0073] For example, the virtual measurement reference signal is generated by the first transmitted measurement reference signal and / or the second transmitted measurement reference signal based on a preset function F;

[0074] In other embodiments, the virtual measurement reference signal is a signal obtained by processing the first transmission measurement reference signal through a preset first function and then performing linear processing on the second transmission measurement reference signal.

[0075] For example, a virtual measurement reference signal is a signal obtained by linearly superimposing or aggregating a first transmitted measurement reference signal after the first transmitted measurement reference signal has been processed by a preset first function and then the second transmitted measurement reference signal has been processed.

[0076] In other implementations, the virtual measurement reference signal is a signal obtained by linearly superimposing or aggregating the second transmission measurement reference signal after the second transmission measurement reference signal has been processed by a preset second function and then the first transmission measurement reference signal has been performed.

[0077] For example, the second transmission measurement reference signal is processed by a preset second function, and then linearly superimposed or aggregated with the first transmission measurement reference signal to obtain the signal.

[0078] In other implementations, the virtual measurement reference signal is obtained by processing the first and second transmission measurement reference signals through preset third and fourth functions, respectively, and then performing linear processing on the processed results.

[0079] For example, a virtual measurement reference signal is a signal obtained by linearly superimposing or aggregating the results of processing the first transmission measurement reference signal through a preset third function and the second transmission measurement reference signal through a preset fourth function.

[0080] It should be noted that the linear processing function can be determined in various ways, including but not limited to being preset in the terminal device, pre-agreed upon between the base station and the terminal device, and sent to the terminal device by the base station. The linear processing function can be a linear function or a nonlinear transformation, and may also include operations such as modulo operation. In practice, nonlinear transformations include, but are not limited to, the ReLU (Rectified Linear Unit) function, the Sigmoid function, the Tanh function, and / or the Leaky ReLU function.

[0081] According to an embodiment of this application, the transmission measurement reference signal includes a first transmission measurement reference signal and a second transmission measurement reference signal, and the transmission measurement result includes a first transmission measurement result and a second transmission measurement result. In step S305, based on the relationship between the preset virtual measurement reference signal and the first and second transmission measurement reference signals, the measurement result corresponding to the virtual measurement reference signal is obtained through the first and second transmission measurement results. After step S305, the measurement results are used for quantized feedback of signal state information.

[0082] In a specific embodiment, the first transmission measurement reference signal is a periodic reference signal, and the second transmission measurement reference signal is an aperiodic reference signal.

[0083] According to the embodiment shown in Figure 3, without transmitting a virtual measurement reference signal, the measurement result corresponding to the virtual measurement reference signal is obtained based on the relationship between the virtual measurement reference signal and the transmitted measurement reference signal, as well as the measurement result corresponding to the transmitted measurement reference signal, thereby resolving the contradiction between reference signal overhead and measurement performance in wireless communication.

[0084] Figure 4 shows a flowchart of another method for feeding back measurement results using a measurement reference signal according to an example embodiment of this application. As shown in Figure 4, the method is applied to a wireless node, and the measurement reference signal in the method includes a virtual measurement reference signal and a transmitted measurement reference signal. As shown in Figure 4, the method includes steps S401 and S403.

[0085] In step S401, the relationship between the virtual measurement reference signal and the transmitted measurement reference signal is configured.

[0086] According to an embodiment of this application, before step S403, it is also necessary to send the relationship between the configured virtual measurement reference signal and the transmitted measurement reference signal to the terminal device.

[0087] In step S403, a transmission measurement reference signal is sent to the terminal so that the terminal can obtain the measurement result corresponding to the virtual measurement reference signal based on the transmission measurement result and relationship obtained from the transmission measurement reference signal.

[0088] According to embodiments of this application, the virtual measurement reference signal and the transmitted measurement reference signal are related as a whole set and a subset.

[0089] According to other embodiments, the virtual measurement reference signal is obtained by processing the transmitted measurement reference signal through a preset first function.

[0090] According to an embodiment of this application, the transmission measurement reference signal includes a first transmission measurement reference signal and a second transmission measurement reference signal. Specifically, when the terminal device requires high time, frequency, and spatial density, both the first and second transmission measurement reference signals are sent to the terminal device; otherwise, only the first transmission measurement reference signal is sent.

[0091] In some embodiments, the virtual measurement reference signal is a signal obtained by linearly processing the first transmission measurement reference signal and the second transmission measurement reference signal. For example, the virtual measurement reference signal is a signal obtained by linearly superimposing or aggregating the first transmission measurement reference signal and the second transmission measurement reference signal.

[0092] In other embodiments, the virtual measurement reference signal is a signal obtained by processing the first transmission measurement reference signal through a preset first function and then performing linear processing on the second transmission measurement reference signal.

[0093] For example, a virtual measurement reference signal is a signal obtained by linearly superimposing or aggregating a first transmitted measurement reference signal after the first transmitted measurement reference signal has been processed by a preset first function and then the second transmitted measurement reference signal has been processed.

[0094] In other implementations, the virtual measurement reference signal is a signal obtained by linearly superimposing or aggregating the second transmission measurement reference signal after the second transmission measurement reference signal has been processed by a preset second function and then the first transmission measurement reference signal has been performed.

[0095] For example, the second transmission measurement reference signal is processed by a preset second function, and then linearly superimposed or aggregated with the first transmission measurement reference signal to obtain the signal.

[0096] In other implementations, the virtual measurement reference signal is obtained by processing the first and second transmission measurement reference signals through preset third and fourth functions, respectively, and then performing linear processing on the processed results.

[0097] For example, a virtual measurement reference signal is a signal obtained by linearly superimposing or aggregating the results of processing the first transmission measurement reference signal through a preset third function and the second transmission measurement reference signal through a preset fourth function.

[0098] According to the embodiment shown in Figure 4, the wireless node determines whether to send a first transmission measurement reference signal and a second transmission measurement reference signal to the terminal, or only send the first transmission measurement reference signal, based on the terminal's needs, thereby resolving the contradiction between reference signal overhead and measurement performance in wireless communication.

[0099] Figure 5 illustrates a schematic diagram of the generation process of a virtual measurement reference signal according to an example embodiment of this application, wherein the subspace CSI-RS that can be shared by a large number of terminals is the first transmission measurement reference signal shown in Figure 3, and the incremental CSI-RS that can be shared or exclusively used by a small number of terminals is the second transmission measurement reference signal shown in Figure 3.

[0100] As shown in Figure 5, the subspace CSI-RS that can be shared by a large number of terminals is configured using frequency / spatial pattern configuration W1, while the incremental CSI-RS that can be shared or exclusively used by a small number of terminals is configured using frequency / spatial pattern configuration W2. The configuration results are then aggregated to obtain a virtual CSI-RS with higher antenna dimensions and higher time-frequency density, i.e., a virtual measurement reference signal. The generated virtual measurement reference signal is then used as a Channel Measurement Resource (CMR) to measure channel state information.

[0101] In this embodiment, when the terminal device requires high time, frequency, and spatial density, a first transmission measurement reference signal and a second transmission measurement reference signal are sent to the terminal device, and the virtual measurement reference signal is a signal obtained based on the first transmission measurement reference signal and the second transmission measurement reference signal; otherwise, only the first transmission measurement reference signal is sent, and the virtual measurement reference signal is a signal obtained based on the first transmission measurement reference signal.

[0102] Figure 6 illustrates a schematic diagram of a channel state information measurement process according to an example embodiment of this application. In this embodiment, each beam corresponds to one port, the virtual measurement reference signal is 32 ports, and the first transmission measurement reference signal is only sent to 16 ports. Assume there are N terminal devices in the cell.

[0103] For most terminals, only a virtual measurement reference signal and a first transmission measurement reference signal need to be configured. Therefore, it is only necessary to obtain the measurement result corresponding to the virtual measurement reference signal based on the measurement result obtained from the first transmission measurement reference signal and the relationship between the virtual measurement reference signal and the first transmission measurement reference signal, thereby realizing the quantitative feedback of channel state information, such as performing Channel Quality Indicator (CQI), Rank Indication (RI), and Pre-coding Matrix Indication (PMI).

[0104] For a small number of terminals, due to the rich multipath propagation of the channel, it is impossible to accurately estimate the measurement results of port 32 based on the measurement of port 16, thus failing to obtain accurate CSI. Therefore, if these terminals only use the first transmission measurement reference signal to recover the measurement results corresponding to the virtual measurement reference signal, the effect is poor. Therefore, in this embodiment, the second transmission measurement reference signal is triggered on demand and aperiodically before the terminal is scheduled. The terminal device measures the measurement results corresponding to the first and second transmission measurement reference signals, and obtains the measurement results corresponding to the virtual measurement reference signal based on the obtained measurement results and the relationship between the virtual measurement reference signal and the first and second transmission measurement reference signals, thereby realizing the quantitative feedback of channel state information.

[0105] Figure 7 illustrates a schematic diagram of the relationship between a virtual measurement reference signal and a transmitted measurement reference signal according to an example embodiment of this application. In this embodiment, the virtual measurement reference signal is a first type of spatial or frequency domain reference signal as shown in Figure 7, and the transmitted measurement reference signal includes a second type of spatial or frequency domain reference signal and a third type of reference signal as shown in Figure 7.

[0106] As shown in Figure 7, the first measurement reference signal is related to the second and third type reference signals as a whole set and a subset, respectively.

[0107] In a specific embodiment, the terminal receives a second type of reference signal and measures the corresponding second measurement result, for example, the second measurement result is a channel matrix H2 of Nr*24. The terminal receives a third type of reference signal and measures the corresponding third measurement result, for example, the third measurement result is a channel matrix H3 of Nr*8. Then, H2 and H3 are concatenated to obtain a channel matrix H1 of Nr*32 corresponding to the first type of reference signal. Finally, based on this channel matrix, a suitable codeword and corresponding index PMI are selected from the corresponding 32Tx codebook, and the optimal transmission layer number RI is determined to achieve quantized feedback of signal state information.

[0108] Figure 8 illustrates a schematic diagram of the relationship between another virtual measurement reference signal and a transmission measurement reference signal according to an example embodiment of this application. In this embodiment, the virtual measurement reference signal is a first type of spatial or frequency domain reference signal as shown in Figure 8, and the transmission measurement reference signal includes a second type of spatial or frequency domain reference signal and a third type of reference signal as shown in Figure 8.

[0109] As shown in Figure 8, the first measurement reference signal is related to the second and third type reference signals as a whole set and a subset, respectively.

[0110] In a specific embodiment, the terminal receives a second type of measurement reference signal and measures the corresponding second measurement result, for example, the second type of measurement result is a channel matrix H2 of Nr*24. The terminal receives a third type of measurement reference signal and measures the corresponding third measurement result, for example, the third type of measurement result is a channel matrix H3 of Nr*8. Then, H2 and H3 are concatenated, and based on the concatenated channel, a dimensionality-upgrading algorithm is used to obtain a channel matrix H1 of Nr*64 corresponding to the first type of reference signal. Based on this channel matrix, a suitable codeword and corresponding index PMI are selected in the corresponding 64Tx codebook, and the optimal transmission layer number RI is determined to achieve quantized feedback of signal state information.

[0111] Figure 9 illustrates a schematic diagram of the relationship between another virtual measurement reference signal and a transmission measurement reference signal according to an example embodiment of this application. In this embodiment, the virtual measurement reference signal is a first type of spatial or frequency domain reference signal as shown in Figure 9, and the transmission measurement reference signal includes a second type of spatial or frequency domain reference signal and a third type of reference signal as shown in Figure 9.

[0112] As shown in Figure 9, the second type of reference signal is a subset of the first type of reference signal, and the third type of reference signal is a subset of the signal generated after the first type of reference signal undergoes a Fourier transform.

[0113] It should be noted that the first type of reference signal can also be transformed using other functions, including but not limited to Fourier transform, fractional Fourier transform or its inverse transform, symplectic finite Fourier transform or its inverse transform, wavelet transform, Wegener transform and / or Laplace transform.

[0114] The terminal receives a second type of measurement reference signal and measures the corresponding second measurement result, for example, the second measurement result is a channel matrix H2 of Nr*16. The terminal receives a third type of measurement reference signal and measures the corresponding third measurement result, for example, the third measurement result is a channel matrix H3 of Nr*16. Then, H3 is subjected to an inverse Fourier transform to obtain H3', which is then superimposed with H2 to obtain a channel matrix H1 of Nr*32 corresponding to the first type of reference signal. Based on this channel matrix, a suitable codeword and corresponding index PMI are selected from the corresponding 64Tx codebook, and the optimal transmission layer number RI is determined, realizing the quantized feedback of signal state information.

[0115] Figure 10 illustrates a schematic diagram of the relationship between a virtual measurement reference signal and a transmitted measurement reference signal according to an example embodiment of this application. In this embodiment, the virtual measurement reference signal is a first type of spatial or frequency domain reference signal as shown in Figure 10, and the transmitted measurement reference signal includes a second type of spatial or frequency domain reference signal and a third type of reference signal as shown in Figure 10.

[0116] As shown in Figure 10, the second type of measurement reference signal is a subset of the signals generated after performing a Fourier transform on the first type of reference signal, and the third type of measurement reference signal is a subset of the signals generated after performing a Fourier transform on the first type of measurement reference signal. Besides the Fourier transform, other transform methods can also be used, including but not limited to the Fourier transform, fractional Fourier transform or its inverse transform, symplectic finite Fourier transform or its inverse transform, wavelet transform, Wegener transform, and / or Laplace transform.

[0117] The terminal receives a second type of measurement reference signal and measures the corresponding second measurement result, for example, the second measurement result is a channel matrix H2 of Nr*16. The terminal receives a third type of measurement reference signal and measures the corresponding third measurement result, for example, the third measurement result is a channel matrix H3 of Nr*16. Then, H3 is subjected to an inverse Fourier transform to obtain H3', and H2 is subjected to an inverse Fourier transform to obtain H2'. These are then superimposed to obtain a channel matrix H1 of Nr*32 corresponding to the first type of reference signal. Based on this channel matrix, a suitable codeword and corresponding index PMI are selected from the corresponding 64Tx codebook, and the optimal transmission layer number RI is determined to achieve quantized feedback of signal state information.

[0118] Figures 11a and 11b show a port schematic diagram of a transmission measurement reference signal according to an example embodiment of the present application. In this embodiment, the virtual measurement reference signal includes 64 transmit ports corresponding to beams, with each beam corresponding to one transmit port.

[0119] Figure 11a shows a schematic diagram of the transmission of the first transmission measurement reference signal, where the vertical axis represents the time unit and the horizontal axis represents the beam index. Each row represents one transmission of the reference signal, and the horizontal axis corresponding to the dark grid points in the row represents the beam that was transmitted. Each reference signal corresponds to the joint transmission of multiple beams. Although the first transmission measurement reference signal is transmitted periodically, triggering the second transmission measurement reference signal earlier can obtain measurement results more quickly and accurately.

[0120] Figure 11b shows a schematic diagram of the transmission of the second transmission measurement reference signal, where the 20 beams are a subset selected from the 64 beams of the virtual measurement reference signal. Based on the measurement results of a portion of the first and second transmission measurement reference signals, the terminal can quickly and accurately select the optimal beam from the 64 beams corresponding to the virtual measurement reference signal and feed back the corresponding index information, thereby achieving quantitative feedback of signal status information.

[0121] The above description primarily focuses on the methodological aspects of the embodiments of this application. Those skilled in the art should readily recognize that, based on the operations or steps described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Those skilled in the art can implement the described functionality in different ways for each specific operation or method, and such implementations should not be considered beyond the scope of this application.

[0122] The apparatus embodiments of this application are described below. For details not described in the apparatus embodiments of this application, please refer to the method embodiments of this application.

[0123] Figure 12 shows a block diagram of an apparatus for feeding back measurement results using a measurement reference signal according to an example embodiment of this application. According to the embodiment of this application, the measurement reference signal includes a virtual measurement reference signal and a transmitted measurement reference signal. The apparatus shown in Figure 12 includes a signal receiving unit 1201, a transmitted measurement result obtaining unit 1203, and a measurement result obtaining unit 1205. Specifically, the signal receiving unit 1201 receives the transmitted measurement reference signal; the transmitted measurement result obtaining unit 1203 obtains a corresponding transmitted measurement result using the transmitted measurement reference signal; and the measurement result obtaining unit 1205 obtains a measurement result corresponding to the virtual measurement reference signal based on a preset relationship between the virtual measurement reference signal and the transmitted measurement reference signal, using the transmitted measurement result.

[0124] Figure 13 shows a block diagram of another apparatus for feeding back measurement results using a measurement reference signal according to an example embodiment of this application. According to the embodiment of this application, the measurement reference signal includes a virtual measurement reference signal and a transmitted measurement reference signal. The apparatus shown in Figure 13 includes a configuration unit 1301 and a transmission unit 1303. The configuration unit 1301 is used to configure the relationship between the virtual measurement reference signal and the transmitted measurement reference signal, and the transmission unit 1303 is used to send the transmitted measurement reference signal to a terminal, so that the terminal obtains a measurement result corresponding to the virtual measurement reference signal based on the transmitted measurement result obtained from the transmitted measurement reference signal and the relationship.

[0125] Figure 14 illustrates an electronic device according to an exemplary embodiment of this application. The electronic device 200 according to this embodiment of the present application will now be described with reference to Figure 14. The electronic device 200 shown in Figure 14 is merely an example and should not be construed as limiting the functionality and scope of the embodiments of this application.

[0126] As shown in Figure 14, the electronic device 200 is presented in the form of a general-purpose computing device. The components of the electronic device 200 may include, but are not limited to: at least one processing unit 210, at least one storage unit 220, a bus 230 connecting different system components (including storage unit 220 and processing unit 210), a display unit 240, etc.

[0127] The storage unit stores program code, which can be executed by the processing unit 210 to perform the methods described in this specification according to various exemplary embodiments of this application. For example, the processing unit 210 can perform the method shown in FIG1.

[0128] Storage unit 220 may include readable media in the form of volatile storage units, such as random access memory (RAM) 2201 and / or cache memory 2202, and may further include read-only memory (ROM) 2203.

[0129] Storage unit 220 may also include a program / utility 2204 having a set (at least one) program module 2205, such program module 2205 including but not limited to: operating system, one or more application programs, other program modules and program data, each or some combination of these examples may include an implementation of a network environment.

[0130] Bus 230 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0131] Electronic device 200 can also communicate with one or more external devices 300 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with electronic device 200, and / or with any device that enables electronic device 200 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 250. Furthermore, electronic device 200 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 260. Network adapter 260 can communicate with other modules of electronic device 200 via bus 230. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 200, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0132] Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. The technical solutions according to the embodiments of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, or network device, etc.) to execute the methods described above according to the embodiments of this application.

[0133] Software products may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example,, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: electrical connections with one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0134] Computer-readable storage media may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable storage medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transfer a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the readable storage medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0135] Program code for performing the operations of this application can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0136] The aforementioned computer-readable medium carries one or more programs, which, when executed by a device, cause the computer-readable medium to perform the aforementioned functions.

[0137] Those skilled in the art will understand that the above modules can be distributed in the device as described in the embodiments, or they can be modified to be uniquely different from one or more devices in this embodiment. The modules in the above embodiments can be combined into one module, or they can be further divided into multiple sub-modules.

[0138] According to an embodiment of this application, a computer program is proposed, including a computer program or instructions, which, when executed by a processor, can perform the methods described above.

[0139] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. Furthermore, any changes or modifications made by those skilled in the art based on the ideas of this application, and on the specific implementation methods and application scope of this application, are all within the scope of protection of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for feeding back measurement results using a measurement reference signal, applied to a terminal device, wherein the measurement reference signal includes a virtual measurement reference signal and a transmitted measurement reference signal, the method comprising: Receive the transmitted measurement reference signal; The corresponding transmission measurement results are obtained using the transmission measurement reference signal; Based on the relationship between the preset virtual measurement reference signal and the transmission measurement reference signal, the measurement result corresponding to the virtual measurement reference signal is obtained through the transmission measurement result.

2. The method according to claim 1, wherein: The virtual measurement reference signal and the transmitted measurement reference signal are related as a whole set and a subset; or The virtual measurement reference signal is the signal obtained after the transmission measurement reference signal has been processed by a preset first function.

3. The method of claim 1, wherein, The transmission measurement reference signal includes a first transmission measurement reference signal and a second transmission measurement reference signal, wherein, The virtual measurement reference signal is the signal obtained by linearly processing the first transmission measurement reference signal and the second transmission measurement reference signal; The virtual measurement reference signal is the signal obtained by processing the first transmission measurement reference signal through a preset first function and then performing linear processing on the second transmission measurement reference signal; The virtual measurement reference signal is obtained by processing the second transmission measurement reference signal through a preset second function, and then linearly processing it together with the first transmission measurement reference signal; or The virtual measurement reference signal is obtained by processing the first transmission measurement reference signal and the second transmission measurement reference signal through preset third and fourth functions, and then performing linear processing on the processed results.

4. The method of claim 3, wherein, The transmission measurement results include a first transmission measurement result and a second transmission measurement result. Based on the relationship between the preset virtual measurement reference signal and the transmission measurement reference signal, the measurement result corresponding to the virtual measurement reference signal is obtained through the transmission measurement results, including: Based on the relationship between the preset virtual measurement reference signal and the first transmission measurement reference signal and the second transmission measurement reference signal, the measurement result corresponding to the virtual measurement reference signal is obtained through the first transmission measurement result and the second transmission measurement result.

5. The method of claim 1, wherein, Before obtaining the measurement result corresponding to the virtual measurement reference signal based on the relationship between the preset virtual measurement reference signal and the transmitted measurement reference signal, the method further includes: Receive configuration information, wherein the configuration information includes the relationship between the virtual measurement reference signal and the transmitted measurement reference signal.

6. The method of claim 1, wherein, The measurement reference signal includes at least one of the following: Channel state information measurement signals, synchronization signals, and probe signals.

7. The method of claim 1, wherein, The method further includes: The measurement results are used to quantify and feedback signal state information.

8. The method of claim 3, wherein, The first transmission measurement reference signal is a periodic reference signal, and the second transmission measurement reference signal is an aperiodic reference signal.

9. A method for feeding back measurement results using a measurement reference signal, applied to a wireless node, wherein the measurement reference signal includes a virtual measurement reference signal and a transmitted measurement reference signal, the method comprising: Configure the relationship between the virtual measurement reference signal and the transmitted measurement reference signal; The transmission measurement reference signal is sent to the terminal so that the terminal obtains the measurement result corresponding to the virtual measurement reference signal based on the transmission measurement result obtained from the transmission measurement reference signal and the relationship.

10. The method according to claim 9, wherein, The virtual measurement reference signal and the transmitted measurement reference signal are related as a whole set and a subset; or The virtual measurement reference signal is the signal obtained after the transmission measurement reference signal has been processed by a preset first function.

11. The method of claim 9, wherein, The transmission measurement reference signal includes a first transmission measurement reference signal and a second transmission measurement reference signal, wherein, The virtual measurement reference signal is the signal obtained by linearly processing the first transmission measurement reference signal and the second transmission measurement reference signal; The virtual measurement reference signal is the signal obtained by processing the first transmission measurement reference signal through a preset first function and then performing linear processing on the second transmission measurement reference signal; The virtual measurement reference signal is obtained by processing the second transmission measurement reference signal through a preset second function, and then linearly processing it together with the first transmission measurement reference signal; or The virtual measurement reference signal is obtained by linearly processing the first transmission measurement reference signal and the second transmission measurement reference signal after they have been processed by a preset third function and a fourth function, respectively.

12. An electronic device, comprising: processor; as well as A memory storing a computer program that, when executed by the processor, causes the processor to perform the method as described in any one of claims 1-11.

13. A computer-readable storage medium having stored thereon computer-readable instructions that, when executed by a processor, cause the processor to perform the method as described in any one of claims 1-11.

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