A channel state information measurement method and device, electronic equipment and storage medium

Abstract

Embodiments of the present application provide a channel state information measurement method and device, electronic equipment and storage medium. The method comprises: a primary cell base station configuring a first set of CSI resource information for a target terminal; wherein the target terminal is a terminal in the primary cell that is pre-selected to require joint multi-point coordinated transmission with a secondary cell base station; the primary cell base station sends first reference signal configuration information to the secondary cell base station, so that the secondary cell base station generates a first CSI reference signal based on the first reference signal configuration information, and sends the first CSI reference signal to the target terminal; the primary cell base station receives a first CSI feedback signal sent by the target terminal, and obtains a downlink channel measurement result between the secondary cell base station and the target terminal based on the first CSI feedback signal. Compared with a scheme in which uplink channel measurement results are used to replace downlink channel measurement results, the multi-point coordinated transmission technology can enhance the improvement effect on the cell edge throughput and the cell edge user spectral efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, and in particular to a channel state information measurement method and device, electronic equipment and storage medium. BACKGROUND

[0002] 5G Multi-TRPs (5G Multi-transmission and receiving points) technology is inherited from the CoMP (Coordinated Multiple Points) technology of LTE-Advanced (Long Term Evolution-Advanced), and essentially still belongs to the multi-point coordinated transmission technology.

[0003] Firstly, the technical background related to CoMP is introduced. In the CoMP technology, the CSI (Channel State Information) is shared between multiple cell base stations, and multiple cell base stations jointly assist in providing services for the same user terminal, which can improve the cell edge throughput, the cell average throughput, and the spectral efficiency of the cell edge user. Among them, in addition to the main cell base station, the cell providing assistance is called a cooperative auxiliary cell, which is simply referred to as an auxiliary cell.

[0004] Referring to FIG. 1(a) and FIG. 1(b), FIG. 1(a) is a schematic diagram of a communication signal in a traditional cellular network, and FIG. 1(b) is a schematic diagram of a communication signal in the CoMP technology, wherein the solid line represents a useful signal, and the dashed line represents an interference signal. As shown in FIG. 1(a), in the traditional cellular network, the user in the cell receives the signal transmitted by the base station in the cell, and the signal transmitted by the other base stations or cells near the cell is an interference signal for the cell; as shown in FIG. 1(b), in the CoMP technology, multiple cell base stations cooperatively provide services for the terminal at the edge of the cell.

[0005] However, for the CoMP technology, a key problem is: how to obtain the downlink channel state information between the auxiliary cell and the target terminal.

[0006] The existing 5G Multi-TRPs technology also cannot obtain the downlink channel state information between the auxiliary cell and the target terminal, and can only be replaced by the known channel state information, for example, the uplink channel measurement result is used to replace the downlink channel measurement result. However, the interference of the uplink base station air interface and the downlink terminal air interface is not symmetrical, and for the FDD (Frequency Division Duplexing) system, the uplink and downlink channels are not reciprocal. Therefore, the uplink channel measurement result cannot be equivalent to the downlink channel measurement result.

[0007] On the basis that the downlink channel state information between the secondary cell and the target terminal cannot be accurately acquired, the multi-point coordinated transmission technology, such as 5G Multi-TRPs technology, has a relatively limited effect on the enhancement of communication quality, that is, the effect of improving the cell edge throughput and the cell edge user spectrum efficiency is not good. SUMMARY

[0008] Embodiments of the present application aim to provide a channel state information measurement method and device, electronic equipment and storage medium, to accurately acquire the downlink channel state information between the secondary cell base station and the target terminal, and to further enhance the effect of multi-point coordinated transmission technology on the improvement of cell edge throughput and cell edge user spectrum efficiency.

[0009] The specific technical solutions are as follows:

[0010] To achieve the above-mentioned purpose, the embodiments of the present application provide a channel state information measurement method, which comprises:

[0011] The master cell base station configures a first set of CSI resource information for the target terminal, wherein the first set of CSI resource information comprises first reference signal configuration information; wherein the target terminal is a terminal in the master cell that is pre-selected to jointly perform multi-point coordinated transmission with the secondary cell base station;

[0012] The master cell base station sends the first reference signal configuration information to the secondary cell base station, so that the secondary cell base station generates a first CSI reference signal based on the first reference signal configuration information and sends the first CSI reference signal to the target terminal;

[0013] The master cell base station receives a first CSI feedback signal sent by the target terminal, and acquires a downlink channel measurement result between the secondary cell base station and the target terminal based on the first CSI feedback signal, wherein the downlink channel measurement result between the secondary cell base station and the target terminal is measured based on the first CSI reference signal.

[0014] Optionally, the first set of CSI resource information further comprises first feedback signal configuration information;

[0015] The first CSI feedback signal sent by the target terminal is generated based on the first feedback signal configuration information.

[0016] Optionally, the method further comprises:

[0017] The master cell base station configures a second set of CSI resource information for the target terminal, wherein the second set of CSI resource information comprises second reference signal configuration information and second feedback signal configuration information.

[0018] The master cell base station generates a second CSI reference signal based on the second reference signal configuration information, and sends the second CSI reference signal to the target terminal;

[0019] The master cell base station receives the second CSI feedback signal sent by the target terminal, and obtains a downlink channel measurement result between the master cell base station and the target terminal based on the second CSI feedback signal, wherein the downlink channel measurement result between the master cell base station and the target terminal is measured based on the second CSI reference signal, and the second CSI feedback signal sent by the target terminal is generated based on the second feedback signal configuration information.

[0020] Optionally, the method further comprises:

[0021] The master cell base station shares the downlink channel measurement result between the secondary cell base station and the target terminal to the secondary cell base station.

[0022] Optionally, after the secondary cell base station generates the first CSI reference signal based on the first reference signal configuration information, the method further comprises:

[0023] The secondary cell base station configures a set of zero-power CSI reference signal resources for terminals within the secondary cell; wherein the time-frequency position of the zero-power CSI reference signal resources is the same as the time-frequency position of the first CSI reference signal.

[0024] To achieve the above object, the embodiment of the present application further provides a channel state information measurement device applied to a master cell base station, comprising:

[0025] A first configuration module configured to configure a first set of CSI resource information for a target terminal, wherein the first set of CSI resource information comprises first reference signal configuration information; wherein the target terminal is a terminal pre-selected in the master cell and needing to perform coordinated multipoint transmission with a secondary cell base station.

[0026] A first sending module configured to send the first reference signal configuration information to the secondary cell base station, so that the secondary cell base station generates a first CSI reference signal based on the first reference signal configuration information, and sends the first CSI reference signal to the target terminal.

[0027] A first obtaining module configured to receive a first CSI feedback signal sent by the target terminal, and obtain a downlink channel measurement result between the secondary cell base station and the target terminal based on the first CSI feedback signal, wherein the downlink channel measurement result between the secondary cell base station and the target terminal is measured based on the first CSI reference signal.

[0028] Optionally, the first set of CSI resource information further comprises first feedback signal configuration information.

[0029] The first CSI feedback signal sent by the target terminal is generated based on the first feedback signal configuration information.

[0030] Optionally, the apparatus further comprises:

[0031] a second configuration module configured to configure a second set of CSI resource information for the target terminal, wherein the second set of CSI resource information comprises second reference signal configuration information and second feedback signal configuration information;

[0032] a second sending module configured to generate a second CSI reference signal based on the second reference signal configuration information, and send the second CSI reference signal to the target terminal;

[0033] a second obtaining module configured to receive a second CSI feedback signal sent by the target terminal, and obtain a downlink channel measurement result between the target terminal and the primary cell base station based on the second CSI feedback signal, wherein the downlink channel measurement result between the target terminal and the primary cell base station is measured based on the second CSI reference signal, and the second CSI feedback signal sent by the target terminal is generated based on the second feedback signal configuration information.

[0034] To achieve the above object, the embodiment of the present application further provides an electronic device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete mutual communication through the communication bus.

[0035] The memory is used for storing a computer program.

[0036] The processor is used for executing the program stored on the memory, and realizes any method step mentioned above.

[0037] To achieve the above object, the embodiment of the present application further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program is executed by a processor to realize any method step mentioned above.

[0038] The embodiment of the present application has the following beneficial effects:

[0039] The channel state information measurement method, device, electronic device and storage medium provided in the embodiments of the present application are used to configure a first set of CSI resource information for a target terminal by a primary cell base station, and the first set of CSI resource information includes first reference signal configuration information; the first reference signal configuration information is sent to a secondary cell base station, and the secondary cell base station generates a first CSI reference signal based on the first reference signal configuration information and sends the first CSI reference signal to the target terminal.

[0040] Since the first CSI reference signal is sent by the secondary cell base station, the propagation path of the first CSI reference signal is a downlink between the secondary cell base station and the target terminal, and thus the target terminal performs channel state measurement based on the first CSI reference signal, and the measurement result obtained is downlink channel state information between the secondary cell base station and the target terminal. The target terminal sends a first CSI feedback signal carrying the measurement result to the primary cell base station, so that the primary cell base station can obtain the downlink channel state information between the secondary cell base station and the target terminal.

[0041] It can be seen that in the embodiments of the present application, the primary cell base station can accurately obtain the downlink channel state information between the secondary cell base station and the target terminal, and compared with the scheme of using uplink channel measurement results to replace downlink channel measurement results, the multi-point cooperative transmission technology can enhance the improvement effect on cell edge throughput and cell edge user spectrum efficiency.

[0042] Of course, implementing any product or method of the present application does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other embodiments can also be obtained by those skilled in the art based on these drawings.

[0044] Fig. 1(a) is a schematic diagram of a communication signal in a traditional cellular network;

[0045] Fig. 1(b) is a schematic diagram of a communication signal in a CoMP technology;

[0046] Figure 2 A flowchart of a channel state information measurement method provided in the embodiments of the present application;

[0047] Figure 3 A flowchart of a channel state information measurement method provided in the embodiments of the present application;

[0048] Figure 4A structural schematic diagram of a channel state information measurement device provided by an embodiment of the present application is shown in the figure.

[0049] Figure 5 A structural schematic diagram of an electronic device provided by an embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art based on the present application belong to the scope of protection of the present application.

[0051] To solve the technical problem that in the existing coordinated multi-point transmission technology, the downlink channel state information between the secondary cell base station and the target terminal cannot be accurately obtained, resulting in poor effect of improving the cell edge throughput and the spectral efficiency of the cell edge user, the present application provides a channel state information measurement method, device, electronic device and storage medium.

[0052] Referring to Figure 2 , Figure 2 A flowchart of a channel state information measurement method provided by an embodiment of the present application is shown in the figure. Figure 2 The method can include the following steps:

[0053] Step 201: The primary cell base station configures a first set of CSI resource information for the target terminal, wherein the first set of CSI resource information contains first reference signal configuration information; wherein the target terminal is a terminal pre-selected in the primary cell that needs to perform coordinated multi-point transmission with the secondary cell base station.

[0054] In the coordinated multi-point transmission technology based on the 4G protocol framework, such as the CoMP technology, the downlink channel state information between the secondary cell and the target terminal cannot be obtained, and only known channel state information can be used as a substitute, such as using the uplink channel measurement result to replace the downlink channel measurement result.

[0055] In the embodiments of the present application, the flexible measurement and reporting mechanism of CSI-RS (Channel State Information Reference Signal) under the 5G protocol is used to solve the above problems.

[0056] Specifically, CSI-RS Config and CSI report can be used for downlink CSI measurement and reporting, and the base station can flexibly configure different CSI-RS Config and CSI report for the terminal to meet the measurement requirements of different scenarios.

[0057] In the embodiments of the present application, the terminal pre-selected in the primary cell and requiring joint secondary cell base station for multipoint cooperative transmission is defined as a target terminal, and the multipoint cooperative transmission under the 5G protocol can be 5G Multi-TRPs technology.

[0058] The target terminal can be selected according to a predetermined rule, for example, a terminal at the edge of the primary cell is selected as the target terminal. The primary cell base station and the secondary cell base station share the channel state information and jointly serve the target terminal.

[0059] With the above mechanism under the 5G protocol, in the embodiments of the present application, the primary cell base station configures a first set of CSI resource information for the target terminal, including first reference signal configuration information, i.e., first CSI-RS Config information.

[0060] The CSI-RS Config information includes configuration information of the CSI reference signal, such as time-frequency domain resources occupied by the CSI reference signal, and an identifier of the target terminal to which the CSI reference signal is directed.

[0061] Step 202: The primary cell base station sends the first reference signal configuration information to the secondary cell base station, so that the secondary cell base station generates the first CSI reference signal based on the first reference signal configuration information and sends the first CSI reference signal to the target terminal.

[0062] In the embodiments of the present application, in order to obtain the downlink channel state information between the secondary cell base station and the target terminal, the primary cell base station sends the configured first reference signal configuration information to the secondary cell base station, and the secondary cell base station can generate the first CSI reference signal based on the first reference signal configuration information.

[0063] The first reference signal configuration information includes an identifier of the target terminal to which the CSI reference signal is directed, so the generated first CSI reference signal is also for the target terminal, and the secondary cell base station sends the first CSI reference signal to the target terminal.

[0064] Step 203: The primary cell base station receives the first CSI feedback signal sent by the target terminal, and obtains the downlink channel measurement result between the secondary cell base station and the target terminal based on the first CSI feedback signal, wherein the downlink channel measurement result between the secondary cell base station and the target terminal is measured based on the first CSI reference signal.

[0065] After the target terminal receives the first CSI reference signal, it performs channel state measurement based on the signal.

[0066] Since the first CSI reference signal is sent by the secondary cell base station, the propagation path of the first CSI reference signal is the downlink between the secondary cell base station and the target terminal, and thus the target terminal performs channel state measurement based on the first CSI reference signal to obtain the downlink channel state information between the secondary cell base station and the target terminal.

[0067] After the primary cell base station obtains the downlink channel measurement result, the primary cell base station generates a first CSI feedback signal based on the measurement result and sends the first CSI feedback signal to the primary cell base station. Thus, the primary cell base station can obtain the downlink channel measurement result between the secondary cell base station and the target terminal by analyzing the first CSI feedback signal.

[0068] In order to perform the multi-point coordinated transmission service, the primary cell base station can share the downlink channel measurement result between the secondary cell base station and the target terminal to the secondary cell base station, so that on the basis of accurately obtaining the downlink channel measurement result between the secondary cell base station and the target terminal, the 5G Multi-TRPs technology can better perform the multi-point coordinated transmission service for the target terminal, achieve better effect, and further improve the cell edge throughput and the cell edge user spectrum efficiency.

[0069] By applying the channel state information measurement method and device provided in the embodiments of the present application, the primary cell base station configures a first set of CSI resource information for the target terminal, the first set of CSI resource information including first reference signal configuration information; the primary cell base station sends the first reference signal configuration information to the secondary cell base station, and the secondary cell base station generates a first CSI reference signal based on the first reference signal configuration information and sends the first CSI reference signal to the target terminal.

[0070] Since the first CSI reference signal is sent by the secondary cell base station, the propagation path of the first CSI reference signal is the downlink between the secondary cell base station and the target terminal, and thus the target terminal performs channel state measurement based on the first CSI reference signal to obtain the downlink channel state information between the secondary cell base station and the target terminal, and the target terminal sends a first CSI feedback signal carrying the measurement result to the primary cell base station, so that the primary cell base station can obtain the downlink channel state information between the secondary cell base station and the target terminal.

[0071] It can be seen that in the embodiments of the present application, the primary cell base station can accurately obtain the downlink channel state information between the secondary cell base station and the target terminal, and compared with the scheme of using the uplink channel measurement result to replace the downlink channel measurement result, the multi-point coordinated transmission technology can enhance the improvement effect on the cell edge throughput and the cell edge user spectrum efficiency.

[0072] In an embodiment of the present application, the first set of CSI resource information further comprises first feedback signal configuration information, i.e., first CSI report information. The CSI report information can comprise configuration information of the CSI feedback signal, such as occupied time-frequency domain resources, required measurement content, etc.

[0073] Correspondingly, the target terminal generates a first CSI feedback signal based on the first feedback signal configuration information and the downlink channel measurement result, and sends the first CSI feedback signal to the primary cell base station.

[0074] In an embodiment of the present application, since the primary cell base station also needs to acquire the downlink channel state information between itself and the target terminal, the primary cell base station can configure a second set of CSI resource information for the target terminal, wherein the second set of CSI resource information comprises second reference signal configuration information and second feedback signal configuration information. The second reference signal configuration information is second CSI-RS Config information, and the second feedback signal configuration information is second CSI report information.

[0075] The primary cell base station generates a second CSI reference signal based on the second reference signal configuration information, and sends the second CSI reference signal to the target terminal.

[0076] Since the second CSI reference signal is sent by the primary cell base station, the propagation path of the second CSI reference signal is the downlink between the primary cell base station and the target terminal. Therefore, the target terminal performs channel state measurement based on the second CSI reference signal, and obtains the downlink channel state information between the primary cell base station and the target terminal. The target terminal sends a second CSI feedback signal carrying the measurement result to the primary cell base station. The second CSI feedback signal is generated based on the downlink channel state measurement result and the second feedback signal configuration information.

[0077] The primary cell base station receives the second CSI feedback signal sent by the target terminal, and acquires the downlink channel measurement result between the primary cell base station and the target terminal based on the second CSI feedback signal, which is used to guarantee the basic link adaptation and scheduling functions.

[0078] It is easy to understand that, for terminals other than the terminals requiring multi-point cooperative transmission in the primary cell base station, the primary cell base station will configure a set of CSI resource information for these terminals, which is used to acquire the downlink channel state information between the primary cell base station and these terminals. Since these terminals do not involve multi-point cooperative transmission technology, the embodiments of the present application do not make a detailed introduction to this.

[0079] In an embodiment of the present application, the secondary cell base station sends a first CSI reference signal to the target terminal in the primary cell. If no other processing is performed, it will affect the services of the terminals in the secondary cell.

[0080] To prevent secondary cells from transmitting CSI-RS on behalf of primary cells and affecting the services of terminals within the secondary cells, secondary cell base stations can configure a set of ZP-CSI-RS (Zero Power Channel State Information Reference Signal) resources for each terminal within the secondary cell, and the time-frequency position of the ZP-CSI-RS resource is the same as that of the first CSI reference signal.

[0081] Furthermore, terminals within the secondary cell can perform rate matching punching on the first CSI reference signal sent by the secondary cell base station, thereby preventing the first CSI reference signal from affecting the services of terminals within the secondary cell.

[0082] As can be seen, in this embodiment of the application, for a target terminal in the main cell that needs to perform multi-point coordinated transmission with the auxiliary cell base station, the main cell base station configures two sets of CSI-RS resources and CSI reporting resources for it. One set is sent by the main cell base station to obtain downlink channel state information between the main cell base station and the target terminal; the other set is sent by the auxiliary cell base station to obtain downlink channel state information between the auxiliary cell base station and the target terminal.

[0083] The primary cell base station can share the acquired downlink channel state information with the secondary cell base station, thereby jointly providing services to the same target terminal using 5G Multi-TRPs technology. Compared to schemes that use uplink channel measurement results to replace downlink channel measurement results, this enhances the improvement effect of multi-point cooperative transmission technology on cell edge throughput and cell edge user spectrum efficiency.

[0084] Furthermore, since each terminal in the secondary cell is equipped with a set of ZP-CSI-RS resources, and the time-frequency position of the ZP-CSI-RS resources is the same as that of the first CSI reference signal, the first CSI reference signal can be avoided from affecting the services of the terminals in the secondary cell.

[0085] The following is in conjunction with the appendix Figure 3 The channel state information measurement method provided in the embodiments of this application will be further described. Figure 3 This is a schematic diagram of a channel state information measurement method provided in an embodiment of this application.

[0086] like Figure 3 As shown, eNB represents the base station, UE represents the user terminal, and in UEi,j, i represents the cell ID where the user terminal is camped, and j represents the user terminal number. Figure 3In the illustrated example, UE1.1 is a terminal pre-selected in a primary cell that needs joint secondary cell base station for 5G Multi-TRP multi-point cooperative transmission, and for UE1.1, eNB1 is the primary cell base station and eNB2 is the secondary cell base station.

[0087] As shown in the figure, the channel state information measurement method can include the following steps: Figure 3

[0088] S1: eNB1 and eNB2 respectively configure and send a set of periodic CSI-RS resources to the UEs residing in their own cells, and obtain the downlink channel measurement information of each UE in the cell through the CSI reporting of the UE, for guaranteeing the basic link adaptation and scheduling function.

[0089] S2: For the UE (UE1.1) that needs to provide Multi-TRP enhancement, its serving primary cell eNB1 additionally configures a set of CSI-RS resources for it, but the second set of CSI-RS signals is not sent over the air interface of the cell. Figure 3

[0090] S3: The serving primary cell eNB1 shares the CSI-RS configuration and generation information configured in S2 to the cooperating secondary cell eNB2.

[0091] S4: After receiving the configuration and generation information in S3, the cooperating secondary cell eNB2 generates a CSI-RS signal and sends the CSI-RS signal to UE1.1 over the air interface.

[0092] S5: UE1.1 performs corresponding measurement based on the two sets of CSI-RS resources, and feeds back the measurement results of the two sets of CSI-RS to the serving primary cell eNB1.

[0093] S6: eNB1 analyzes the two sets of measurement results, which are the downlink channel state information between eNB1 and UE1.1 and the downlink channel state information between eNB2 and UE1.1, and shares the measurement results to eNB2.

[0094] Through the above steps, the downlink channel state information between eNB1 and UE1.1 and the downlink channel state information between eNB2 and UE1.1 have been obtained and shared between eNB1 and eNB2, thereby providing stable and reliable channel state information for UE1.1 in the process of providing Multi-TRP enhancement service, and further enhancing the improvement effect of multi-point cooperative transmission technology on cell edge throughput and cell edge user spectrum efficiency.

[0095] ​​S7: The cooperating secondary eNB 2 configures a set of ZP-CSI-RS resources for all UEs residing in its cell, whose time-frequency locations are the same as the CSI-RS sent in S4. That is, all UEs in the secondary cell rate-match puncture the CSI-RS sent by the eNB 2 on behalf to avoid the impact of the CSI-RS signal on the 5G service in the secondary cell.

[0096] Figure 4 A structural schematic diagram of a channel state information measurement device provided by an embodiment of the present application is shown in Figure 4 The present application also provides a channel state information measurement device, which is applied to a primary cell base station and includes:

[0097] A first configuration module 401 is configured to configure a first set of CSI resource information for a target terminal, wherein the first set of CSI resource information includes first reference signal configuration information; and the target terminal is a terminal pre-selected in the primary cell and needing to perform coordinated multipoint transmission with a secondary cell base station.

[0098] A first sending module 402 is configured to send the first reference signal configuration information to the secondary cell base station, so that the secondary cell base station generates a first CSI reference signal based on the first reference signal configuration information and sends the first CSI reference signal to the target terminal.

[0099] A first obtaining module 403 is configured to receive a first CSI feedback signal sent by the target terminal and obtain a downlink channel measurement result between the secondary cell base station and the target terminal based on the first CSI feedback signal, wherein the downlink channel measurement result between the secondary cell base station and the target terminal is measured based on the first CSI reference signal.

[0100] In an embodiment of the present application, the first set of CSI resource information further includes first feedback signal configuration information.

[0101] The first CSI feedback signal sent by the target terminal is generated based on the first feedback signal configuration information.

[0102] In an embodiment of the present application, the device further includes:

[0103] A second configuration module is configured to configure a second set of CSI resource information for the target terminal, wherein the second set of CSI resource information includes second reference signal configuration information and second feedback signal configuration information.

[0104] A second sending module is configured to generate a second CSI reference signal based on the second reference signal configuration information and send the second CSI reference signal to the target terminal.

[0105] a second obtaining module, configured to receive a second CSI feedback signal sent by the target terminal, and obtain a downlink channel measurement result between the target terminal and the primary cell base station based on the second CSI feedback signal, wherein the downlink channel measurement result between the target terminal and the primary cell base station is measured based on the second CSI reference signal, and the second CSI feedback signal sent by the target terminal is generated based on the second feedback signal configuration information.

[0106] The channel state information device provided in the embodiment of the present application is used in the following manner. The primary cell base station configures a first set of CSI resource information for the target terminal, and the first set of CSI resource information comprises first reference signal configuration information. The primary cell base station sends the first reference signal configuration information to the secondary cell base station. The secondary cell base station generates a first CSI reference signal based on the first reference signal configuration information, and sends the first CSI reference signal to the target terminal.

[0107] Since the first CSI reference signal is sent by the secondary cell base station, the propagation path of the first CSI reference signal is the downlink between the secondary cell base station and the target terminal. Therefore, the target terminal performs channel state measurement based on the first CSI reference signal, and obtains the downlink channel state information between the secondary cell base station and the target terminal. The target terminal sends a first CSI feedback signal carrying the measurement result to the primary cell base station, so that the primary cell base station can obtain the downlink channel state information between the secondary cell base station and the target terminal.

[0108] It can be seen that, in the embodiment of the present application, the primary cell base station can accurately obtain the downlink channel state information between the secondary cell base station and the target terminal. Compared with the scheme of replacing the downlink channel measurement result with the uplink channel measurement result, the multi-point cooperative transmission technology can enhance the improvement effect on the cell edge throughput and the cell edge user spectrum efficiency.

[0109] The embodiment of the present application also provides an electronic device, as shown in the accompanying drawings, comprising a processor 501, a communication interface 502, a memory 503 and a communication bus 504, wherein the processor 501, the communication interface 502 and the memory 503 complete mutual communication through the communication bus 504, Figure 5

[0110] The memory 503 is used to store a computer program.

[0111] The processor 501 is used to execute the program stored in the memory 503, and implement the following steps:

[0112] ​The master cell base station configures a first set of CSI resource information for a target terminal, wherein the first set of CSI resource information comprises first reference signal configuration information; wherein the target terminal is a terminal in the master cell that is pre-selected to require joint multi-point coordinated transmission by the secondary cell base station;

[0113] The master cell base station sends the first reference signal configuration information to the secondary cell base station, so that the secondary cell base station generates a first CSI reference signal based on the first reference signal configuration information and sends the first CSI reference signal to the target terminal;

[0114] The master cell base station receives a first CSI feedback signal sent by the target terminal, and obtains a downlink channel measurement result between the secondary cell base station and the target terminal based on the first CSI feedback signal, wherein the downlink channel measurement result between the secondary cell base station and the target terminal is measured based on the first CSI reference signal.

[0115] The communication bus mentioned above can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or only one type of bus.

[0116] The communication interface is used for communication between the above-mentioned electronic device and other devices.

[0117] The memory can include a Random Access Memory (RAM) and can also include a Non-Volatile Memory (NVM), such as at least one disk memory. Optionally, the memory can also be at least one storage device located away from the aforementioned processor.

[0118] The processor described above can be a general processor, including a central processing unit (CPU), a network processor (NP), etc.; can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component.

[0119] With the electronic device provided in the embodiments of the present application, the primary cell base station configures a first set of CSI resource information for the target terminal, the first set of CSI resource information including first reference signal configuration information; the first reference signal configuration information is sent to the secondary cell base station, and the secondary cell base station generates a first CSI reference signal based on the first reference signal configuration information and sends the first CSI reference signal to the target terminal.

[0120] Since the first CSI reference signal is sent by the secondary cell base station, the propagation path of the first CSI reference signal is a downlink between the secondary cell base station and the target terminal, and thus the target terminal performs channel state measurement based on the first CSI reference signal, and the measurement result obtained is downlink channel state information between the secondary cell base station and the target terminal. The target terminal sends a first CSI feedback signal carrying the measurement result to the primary cell base station, so that the primary cell base station can obtain the downlink channel state information between the secondary cell base station and the target terminal.

[0121] It can be seen that in the embodiments of the present application, the primary cell base station can accurately obtain the downlink channel state information between the secondary cell base station and the target terminal, and compared with the scheme of using uplink channel measurement results to replace downlink channel measurement results, the multi-point cooperative transmission technology can enhance the improvement effect on cell edge throughput and cell edge user spectral efficiency.

[0122] In another embodiment provided in the present application, a computer readable storage medium is also provided, and the computer readable storage medium stores a computer program. When the computer program is executed by a processor, the steps of any of the above channel state information measurement methods are implemented.

[0123] In another embodiment provided in the present application, a computer program product containing instructions is also provided, and when the computer program product is run on a computer, the computer is caused to execute any of the channel state information measurement methods in the above embodiments.

[0124] In the embodiments described above, all or some of the steps can be implemented by using software, hardware, firmware or any combination thereof. When implemented with software, all or some of the steps of the embodiments can be implemented in the form of one or more computer programs that are written in any suitable programming language. The computer programs can be stored in one or more computer-readable storage media, such as a computer-readable storage medium described above. When the computer programs are loaded into and executed by one or more computers, all or some of the steps of the embodiments described above are performed.

[0125] It should be noted that, in the present document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Also, the terms "comprising", "containing", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not only include those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0126] Each of the embodiments in the present specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other. Each of the embodiments focuses on the difference from other embodiments. In particular, the channel state information measurement device, electronic device, computer-readable storage medium, and computer program product embodiments are basically similar to the channel state information measurement method embodiments, and thus are described simply, and the relevant parts can be referred to the description of the channel state information measurement method embodiments.

[0127] The above merely provides the preferred embodiment of the present application, and not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for measuring channel state information, characterized in that, The method includes: The main cell base station configures a first set of CSI resource information for the target terminal, wherein the first set of CSI resource information includes first reference signal configuration information; wherein the target terminal is a pre-selected terminal in the main cell that needs to perform multi-point coordinated transmission with the auxiliary cell base station; The primary cell base station sends the first reference signal configuration information to the secondary cell base station, so that the secondary cell base station generates a first CSI reference signal based on the first reference signal configuration information and sends the first CSI reference signal to the target terminal. The primary cell base station receives a first CSI feedback signal sent by the target terminal, and obtains downlink channel measurement results between the secondary cell base station and the target terminal based on the first CSI feedback signal. The downlink channel measurement results between the secondary cell base station and the target terminal are obtained based on the first CSI reference signal.

2. The method according to claim 1, characterized in that, The first set of CSI resource information also includes the first feedback signal configuration information; The first CSI feedback signal sent by the target terminal is generated based on the configuration information of the first feedback signal.

3. The method according to claim 1, characterized in that, The method further includes: The main cell base station configures a second set of CSI resource information for the target terminal, wherein the second set of CSI resource information includes second reference signal configuration information and second feedback signal configuration information; The primary cell base station generates a second CSI reference signal based on the second reference signal configuration information and sends the second CSI reference signal to the target terminal. The primary cell base station receives the second CSI feedback signal sent by the target terminal, and obtains the downlink channel measurement result between the primary cell base station and the target terminal based on the second CSI feedback signal. The downlink channel measurement result between the primary cell base station and the target terminal is obtained based on the second CSI reference signal. The second CSI feedback signal sent by the target terminal is generated based on the configuration information of the second feedback signal.

4. The method according to claim 1, characterized in that, The method further includes: The primary cell base station shares the downlink channel measurement results between the secondary cell base station and the target terminal with the secondary cell base station.

5. The method according to any one of claims 1-4, characterized in that, After the secondary cell base station generates the first CSI reference signal based on the first reference signal configuration information, the method further includes: The secondary cell base station is configured with a set of zero-power CSI reference signal resources for each terminal in the secondary cell; wherein the time-frequency position of the zero-power CSI reference signal resources is the same as the time-frequency position of the first CSI reference signal.

6. A channel state information measurement device, characterized in that, The device, applied to a main cell base station, includes: The first configuration module is used to configure a first set of CSI resource information for a target terminal, wherein the first set of CSI resource information includes first reference signal configuration information; wherein the target terminal is a terminal pre-selected in the main cell that needs to perform multi-point coordinated transmission with the auxiliary cell base station; The first transmitting module is configured to transmit the first reference signal configuration information to the secondary cell base station, so that the secondary cell base station generates a first CSI reference signal based on the first reference signal configuration information and transmits the first CSI reference signal to the target terminal; The first acquisition module is configured to receive a first CSI feedback signal sent by the target terminal, and acquire downlink channel measurement results between the secondary cell base station and the target terminal based on the first CSI feedback signal, wherein the downlink channel measurement results between the secondary cell base station and the target terminal are obtained based on the first CSI reference signal.

7. The apparatus according to claim 6, characterized in that, The first set of CSI resource information also includes the first feedback signal configuration information; The first CSI feedback signal sent by the target terminal is generated based on the configuration information of the first feedback signal.

8. The apparatus according to claim 6, characterized in that, The device further includes: The second configuration module is used to configure a second set of CSI resource information for the target terminal, wherein the second set of CSI resource information includes a second reference signal configuration information and a second feedback signal configuration information. The second transmitting module is used to generate a second CSI reference signal based on the second reference signal configuration information, and to transmit the second CSI reference signal to the target terminal. The second acquisition module is configured to receive a second CSI feedback signal sent by the target terminal, and acquire downlink channel measurement results between the primary cell base station and the target terminal based on the second CSI feedback signal, wherein the downlink channel measurement results between the primary cell base station and the target terminal are obtained based on the second CSI reference signal; the second CSI feedback signal sent by the target terminal is generated based on the configuration information of the second feedback signal.

9. An electronic device, characterized in that, It includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, when executing a program stored in memory, implements the steps of the method described in any one of claims 1-4.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the method described in any one of claims 1-4.

Images