Channel state information (CSI) measurement method, terminal and network side device

Abstract

The application discloses a channel state information (CSI) measurement method, a terminal and a network side device, and belongs to the technical field of communication. The CSI measurement method comprises the following steps: a network side device sends CSI measurement configuration information to a terminal, wherein the CSI measurement configuration information is used for configuring target CSI measurement resources associated with target CSI information; and the network side device receives the target CSI information from the terminal. The target CSI information comprises at least one of the following: a Doppler frequency offset, a Doppler spread, a Doppler spectrum, a time domain channel correlation matrix, a delay spread, an average delay, a delay spectrum and a frequency domain channel correlation matrix.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a channel state information (CSI) measurement method, a terminal and a network side device. BACKGROUND

[0002] In related new radio (NR) technology, precoding matrix indicator (PMI), rank indicator (RI), channel quality indicator (CQI) and other channel state information (CSI) are reported by a user equipment (UE) to a network side device, so that the network side device can use the CSI information reported by the UE to affect subsequent data transmission.

[0003] However, if the channel state between the UE and the network side device changes (for example, in a high-speed moving scenario, the change of the channel state will be caused by the UE), the network side device can only use the CSI information reported by the UE last time until the next CSI information is reported and takes effect. At this time, there is a problem that the CSI information reported by the UE last time does not match the current channel state, causing the precoding, modulation order and code rate adjusted according to the CSI information to be unable to well match the data transmission after the change of the channel state. SUMMARY

[0004] Embodiments of the present application provide a channel state information (CSI) measurement method, a terminal and a network side device, which can configure the terminal to measure and report CSI enhancement information, so that the network side device can perform channel prediction and other processing according to the CSI enhancement information, thereby adjusting the precoding, modulation order and code rate during data transmission, so as to better match the change of the channel state.

[0005] In a first aspect, a channel state information (CSI) measurement method is provided, and the method comprises:

[0006] The network side device sends CSI measurement configuration information to the terminal, and the CSI measurement configuration information is used to configure a target CSI measurement resource associated with target CSI information.

[0007] The network side device receives the target CSI information from the terminal.

[0008] The target CSI information comprises at least one of the following:

[0009] Doppler frequency offset, Doppler spread, Doppler spectrum, time-domain channel correlation matrix, delay spread, average delay, delay spectrum, and frequency-domain channel correlation matrix.

[0010] In a second aspect, a channel state information (CSI) measurement apparatus is provided, which is applied to a network side device, and the apparatus comprises:

[0011] A first sending module is configured to send, to a terminal, CSI measurement configuration information, wherein the CSI measurement configuration information is used to configure target CSI measurement resources associated with target CSI information.

[0012] A first receiving module is configured to receive, from the terminal, the target CSI information.

[0013] The target CSI information comprises at least one of the following:

[0014] Doppler frequency offset, Doppler spread, Doppler spectrum, time-domain channel correlation matrix, delay spread, average delay, delay spectrum, and frequency-domain channel correlation matrix.

[0015] In a third aspect, a channel state information (CSI) measurement method is provided, which comprises:

[0016] The terminal receives, from a network side device, CSI measurement configuration information.

[0017] The terminal measures, according to the CSI measurement configuration information, target CSI information by using target CSI measurement resources.

[0018] The terminal sends, to the network side device, the target CSI information.

[0019] The target CSI information comprises at least one of the following:

[0020] Doppler frequency offset, Doppler spread, Doppler spectrum, time-domain channel correlation matrix, delay spread, average delay, delay spectrum, and frequency-domain channel correlation matrix.

[0021] In a fourth aspect, a channel state information (CSI) measurement apparatus is provided, which is applied to a terminal, and the apparatus comprises:

[0022] A second receiving module is configured to receive, from a network side device, CSI measurement configuration information.

[0023] A measurement module is configured to measure, according to the CSI measurement configuration information, target CSI information by using target CSI measurement resources.

[0024] A fourth sending module is configured to send, to the network side device, the target CSI information.

[0025] The target CSI information includes at least one of the following:

[0026] Doppler frequency offset, Doppler spread, Doppler spectrum, time-domain channel correlation matrix, delay spread, average delay, delay spectrum, and frequency-domain channel correlation matrix.

[0027] In a fifth aspect, a network-side device is provided, which includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the method according to the first aspect.

[0028] In a sixth aspect, a network-side device is provided, which includes a processor and a communication interface, wherein the communication interface is configured to send, to a terminal, CSI measurement configuration information used for configuring a target CSI measurement resource associated with target CSI information; and the communication interface is further configured to receive, from the terminal, the target CSI information, wherein the target CSI information includes at least one of the following:

[0029] Doppler frequency offset, Doppler spread, Doppler spectrum, time-domain channel correlation matrix, delay spread, average delay, delay spectrum, and frequency-domain channel correlation matrix.

[0030] In a seventh aspect, a terminal is provided, which includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the method according to the third aspect.

[0031] In an eighth aspect, a terminal is provided, which includes a processor and a communication interface, wherein the communication interface is configured to receive, from a network-side device, CSI measurement configuration information; the processor is configured to measure target CSI information by using a target CSI measurement resource according to the CSI measurement configuration information; and the communication interface is further configured to send, to the network-side device, the target CSI information, wherein the target CSI information includes at least one of the following:

[0032] Doppler frequency offset, Doppler spread, Doppler spectrum, time-domain channel correlation matrix, delay spread, average delay, delay spectrum, and frequency-domain channel correlation matrix.

[0033] In a ninth aspect, a readable storage medium is provided, which stores a program or instructions, and the program or instructions, when executed by a processor, implement the steps of the method according to the first aspect, or implement the steps of the method according to the third aspect.

[0034] In a tenth aspect, a chip is provided, which includes a processor and a communication interface, the communication interface and the processor are coupled, the processor is configured to run programs or instructions to implement the method according to the first aspect or the method according to the third aspect.

[0035] In an eleventh aspect, a computer program / program product is provided, which is stored in a non-transitory storage medium, and the program / program product is executed by at least one processor to implement the steps of the channel state information (CSI) measurement method according to the first aspect or the steps of the channel state information (CSI) measurement method according to the third aspect.

[0036] In the embodiments of the present application, a network side device sends CSI measurement configuration information to a terminal, the CSI measurement configuration information is used to configure a target CSI measurement resource associated with target CSI information; the network side device receives the target CSI information from the terminal; wherein the target CSI information includes at least one of the following: Doppler frequency offset, Doppler spread, Doppler spectrum, time domain channel correlation matrix, delay spread, average delay, delay spectrum and frequency domain channel correlation matrix. In this way, the network side device can configure the terminal to enhance CSI measurement and reporting, so that the terminal can measure the target CSI information such as Doppler frequency offset, Doppler spread, Doppler spectrum, time domain channel correlation matrix, delay spread, average delay, delay spectrum and frequency domain channel correlation matrix on the target CSI measurement resource, and can report the target CSI information to the network side device, so that the network side device can predict the channel state change corresponding to the terminal according to the target CSI information, and then can adjust the precoding, modulation order and code rate according to the predicted channel state, so as to better match the data transmission after the channel state changes. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0038] Figure 2 is a flowchart of a CSI measurement method provided by the embodiments of the present application;

[0039] Figure 3a is a resource structure diagram of a first target CSI measurement resource;

[0040] Figure 3b is a resource structure diagram of a second target CSI measurement resource;

[0041] Figure 3c is a resource structure diagram of a third target CSI measurement resource;

[0042] Figure 3dis a schematic diagram of a resource structure of the fourth target CSI measurement resource;

[0043] Figure 4a is a schematic diagram of mapping of the fifth target CSI measurement resource in a time-frequency domain;

[0044] Figure 4b is a schematic diagram of mapping of the sixth target CSI measurement resource in a time-frequency domain;

[0045] Figure 5 is a flowchart of another CSI measurement method provided by an embodiment of the present application;

[0046] Figure 6 is a structural schematic diagram of a first CSI measurement device provided by an embodiment of the present application;

[0047] Figure 7 is a structural schematic diagram of a second CSI measurement device provided by an embodiment of the present application;

[0048] Figure 8 is a structural schematic diagram of a communication device provided by an embodiment of the present application;

[0049] Figure 9 is a structural schematic diagram of a terminal provided by an embodiment of the present application;

[0050] Figure 10 is a structural schematic diagram of a network-side device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art are within the scope of the present application.

[0052] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second" are generally of a kind and are not limited in number, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the front and rear associated objects.

[0053] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied outside the NR system application, such as in a 6th Generation (6G) communication system. th

[0054] Figure 1 ​A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a terminal-side device such as a mobile phone, a tablet personal computer (PC), a laptop PC, a personal digital assistant (PDA), a palm PC, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture), and the like. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, and the like), a smart wristband, smart clothing, a game machine, and the like. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, an evolved node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, a transmitting receiving point (TRP), or some other appropriate terminology in the art, as long as the same technical effects are achieved. The base station is not limited to a specific technical term, and it should be noted that only a base station in an NR system is taken as an example in the embodiments of the present application, but the specific type of the base station is not limited.

[0055] The CSI measurement method, the CSI measurement device, the terminal, the network-side device, and the readable storage medium provided by the embodiments of the present application will be described in detail below in combination with the accompanying drawings and some embodiments and application scenarios.

[0056] Please refer to Figure 2 The execution subject of the CSI measurement method provided by the embodiments of the present application can be a network-side device, such as Figure 2As shown, the CSI measurement method can include the following steps:

[0057] Step 201, a network side device sends CSI measurement configuration information to a terminal, the CSI measurement configuration information being used for configuring target CSI measurement resources associated with target CSI information;

[0058] Doppler frequency offset, Doppler spread, Doppler spectrum, time domain channel correlation matrix, delay spread, average delay, delay spectrum, and frequency domain channel correlation matrix.

[0059] Step 202, the network side device receives the target CSI information from the terminal.

[0060] It should be noted that before the terminal reports the target CSI information to the network side device, the terminal can also perform data processing such as quantization and compression on the target CSI information or perform data conversion, at this time, the above-mentioned network side device receiving the target CSI information from the terminal can be understood as: the network side device receiving the target CSI information after data processing or data conversion from the terminal, for example: the terminal converts the measured target CSI information into a codebook for precoding, and reports the converted codebook to the network side device, and this does not limit the specific form of the terminal reporting the target CSI information.

[0061] In implementation, a channel will experience changes in the frequency domain and / or the time domain, and the terminal can only perform periodic, aperiodic or semi-persistent CSI reporting, in the embodiments of the present application, the target CSI measurement resources can be configured to the terminal, so that the terminal can more accurately measure the time domain characteristics and / or frequency domain characteristics of the channel on the resources, and report the measured time domain characteristics and / or frequency domain characteristics of the channel to the network side device, so that the network side device can know the change characteristics of the channel state according to the time domain characteristics and / or frequency domain characteristics measured by the terminal. In this way, after the network side device receives the target CSI information reported by the terminal, the network side device can predict the change of the channel state corresponding to the terminal, and accordingly adjust the precoding, modulation order and code rate during data transmission, so as to better match the data transmission after the channel state changes.

[0062] It should be noted that the CSI measurement method provided in the embodiments of the present application and the CSI measurement method in the related art are at least different in the following aspects:

[0063] 1) The CSI information reported in the prior art is different from the target CSI information in the embodiments of the present application. Specifically, in the existing CSI measurement and reporting technology, the network side device configures the terminal to measure at least one of the following conventional CSI information on the CSI reference signal (CSI Reference Signal, CSI-RS) resource and the CSI interference measurement (CSI Intereference Measurement, CSI-IM) resource: CSI-RS resource indication (CSI-RS Resource Indicator, CRI), precoding matrix indication (Precoding Matrix indicator, PMI), rank indication (Rank Indicator, RI), channel quality indication (Channel Quality Indicator, CQI), layer indication (Layer Indicator, LI), reference signal received power (Reference Signal Received Power, RSRP), and signal-to-noise and interference ratio (Signal-to-Noise and Interference Ratio, SINR).

[0064] 2) The CSI resource for measuring the CSI information in the prior art is different from the target CSI measurement resource for measuring the target CSI information in the embodiments of the present application. Specifically, in the existing CSI measurement and reporting technology, the network side device configures the terminal with the CSI-RS for configuring the port number, time-frequency position and other information of the CSI-RS. However, the CSI-RS in the prior art is not suitable for the measurement requirements of the Doppler frequency offset, the Doppler spread, the Doppler spectrum, the time-domain channel correlation matrix, the delay spread, the average delay, the delay spectrum and the frequency-domain channel correlation matrix in the embodiments of the present application.

[0065] Optionally, the target CSI measurement resource includes:

[0066] a CSI-RS resource; or

[0067] a tracking reference signal (Tracking Reference Signal, TRS) resource; or

[0068] a combination of reference signal resources.

[0069] In implementation, the target CSI measurement resource can be at least two CSI-RS resources, or one CSI-RS resource that occurs at least twice in the time domain, or can be a TRS resource, or can be a combination of a CSI-RS resource and a TRS resource, such as a combination of one CSI-RS resource and one TRS resource set, or a combination of one CSI-RS resource and at least two TRS resource sets, or a combination of at least two CSI-RS resources and at least two TRS resource sets, or a combination of at least two CSI-RS resources and one TRS resource set.

[0070] <Case 1>

[0071] In the case where the target CSI measurement resource is a CSI-RS resource, the number of CSI-RS resources can be one or at least two, i.e., one or at least two CSI-RS resources can be used for the same CSI measurement.

[0072] In some embodiments, when the target CSI measurement resource includes at least two CSI-RS resources (e.g., the target CSI measurement resource is at least two CSI-RS resources, or the target CSI measurement resource is a combination of a TRS resource set and at least two CSI-RS resources), the CSI measurement configuration information includes at least one of the following CSI-RS resource indication information:

[0073] First CSI-RS resource indication information for indicating the number of configured CSI-RS resources;

[0074] Second CSI-RS resource indication information for indicating the index of the CSI-RS resource;

[0075] Third CSI-RS resource indication information for indicating the number of ports of the CSI-RS resource;

[0076] Fourth CSI-RS resource indication information for indicating the time domain interval between CSI-RS resources;

[0077] Fifth CSI-RS resource indication information for indicating the bandwidth of the CSI-RS resource;

[0078] Sixth CSI-RS resource indication information for indicating the frequency domain density of the CSI-RS resource.

[0079] In specific implementation, the above-mentioned target CSI measurement resource including at least two CSI-RS resources can be understood as that the at least two CSI-RS resources are used for the same measurement.

[0080] Option 1: The aforementioned first CSI-RS resource indication information can indicate the number of CSI-RS resources used for the same measurement.

[0081] Option 2: The aforementioned second CSI-RS resource indication information can indicate the index information such as the ID of the CSI-RS resource among the at least two CSI-RS resources, so as to distinguish the CSI-RS resources.

[0082] Option 3: The aforementioned third CSI-RS resource indication information can indicate the number of ports for each of the at least two CSI-RS resources, and the number of ports for different CSI-RS resources can be different from each other.

[0083] Optionally, the number of ports of the target CSI-RS resource in the at least two CSI-RS resources is X, and the number of ports of the other CSI-RS resources in the at least two CSI-RS resources besides the target CSI-RS resource is Y, where Y is equal to 1 or 2, and X is greater than or equal to Y.

[0084] For example: Figure 3c As shown, Non-Zero Power (NZP) CSI-RS1 is a 4-port CSI-RS resource, and NZP CSI-RS2 to NZP CSI-RS4 are three 1-port CSI-RS resources.

[0085] In this embodiment, it can be indicated that the number of ports of one of the at least two CSI-RS resources is greater than or equal to 1, and the number of ports of the other CSI-RS resources is 1; or it can be indicated that the number of ports of one of the at least two CSI-RS resources is greater than or equal to 2, and the number of ports of the other CSI-RS resources is 2.

[0086] For example: Figure 3a As shown, assuming that the at least two CSI-RS resources include NZP CSI-RS1, NZP CSI-RS2 and NZP CSI-RS3, then NZP CSI-RS1 is an 8-port CSI-RS resource, while NZP CSI-RS2 and NZP CSI-RS3 are two 1-port CSI-RS resources.

[0087] For example: Figure 3b As shown, NZP CSI-RS1 is a 4-port CSI-RS resource, while NZP CSI-RS2 and NZP CSI-RS3 are two 1-port CSI-RS resources.

[0088] For example: Figure 3cAs shown, NZP CSI-RS1 is a 4-port CSI-RS resource, and NZP CSI-RS2, NZP CSI-RS3 and NZP CSI-RS4 are three 1-port CSI-RS resources.

[0089] The embodiment can improve the flexibility of the port number of the at least two CSI-RS resources to adapt to the measurement of the target CSI resource.

[0090] Option four, in implementation, the above-mentioned fourth CSI-RS resource indication information can be included in the CSI measurement configuration information to indicate the time domain interval between the at least two CSI-RS resources, of course, in implementation, in the case that the above-mentioned fourth CSI-RS resource indication information is not included in the above-mentioned CSI measurement configuration information, the network side device and the terminal can also adopt the time domain interval agreed by default, which is not limited here.

[0091] Option five, the above-mentioned fifth CSI-RS resource indication information can indicate the respective occupied bandwidth of the at least two CSI-RS resources, and the occupied bandwidth of different CSI-RS resources can be different.

[0092] Option six, the above-mentioned sixth CSI-RS resource indication information can indicate the respective frequency domain density of the at least two CSI-RS resources, and the frequency domain density of different CSI-RS resources can be different.

[0093] The above-mentioned frequency domain density can include at least one of resource block (RB) occupation density and subband occupation density.

[0094] For example: assuming that the mapping of the at least two CSI-RS resources in the time-frequency domain corresponding to one measurement is as shown in the following table: Figure 4a As shown, and suband size = 4, wherein the frequency domain position occupied by the CSI-RS in the first slot is the first RB of each suband, the frequency domain position occupied by the CSI-RS in the second slot is the second RB of each suband, the frequency domain position occupied by the CSI-RS in the third slot is the third RB of each suband, and the frequency domain position occupied by the CSI-RS in the fourth slot is the fourth RB of each suband. At this time, the RB occupation density of the CSI-RS is 1 / 4, that is, in one slot, the CSI-RS resource appears once in every 4 RBs.

[0095] It is worth noting that the suband size can vary for different RBs, and correspondingly, the RB occupancy density may also vary. For example, when the suband size is 4, the RB occupancy density of CSI-RS can be 1, 1 / 2, or 1 / 4; when the suband size is 8, the RB occupancy density of CSI-RS can be 1, 1 / 2, 1 / 4, or 1 / 8; when the suband size is 16, the RB occupancy density of CSI-RS can be 1, 1 / 2, 1 / 4, 1 / 8, or 1 / 16; and when the suband size is 32, the RB occupancy density of CSI-RS can be 1, 1 / 2, 1 / 4, 1 / 8, 1 / 16, or 1 / 32.

[0096] In implementation, the suband size can be determined based on the Bandwidth Part (BWP). For example, the correspondence between BWP and suband size is shown in Table 1 below:

[0097] Table 1

[0098] Bandwidth part (PRBs) Subband size (PRBs) 24–72 4，8 73–144 8，16 145–275 16，32

[0099] As shown in Table 1 above, the units for BWP and suband size are Physical Resource Blocks (PRBs). It should be noted that the RB mentioned in the embodiments of this application is the same as the PRB.

[0100] For example: Suppose that a single measurement corresponds to the mapping of at least two CSI-RS resources in the time-frequency domain as follows: Figure 4b As shown, with a suband size of 4, the CSI-RS occupies the first RB of the first suband in slot 1, the second RB of the second suband in slot 2, the third RB of the third suband in slot 3, and the fourth RB of the fourth suband in slot 4; this cycle repeats. At this point, the subband occupancy density of CSI-RS is 1 / 4, meaning that within a slot, CSI-RS resources appear once every four subbands.

[0101] It is worth mentioning that, similar to the RB occupation density described above, the suband size is different, and the suband size occupation density can also be different, for example: when the suband size = 4, the subband occupation density of the CSI-RS can be 1 / 2 or 1 / 4; when the suband size = 8, the subband occupation density of the CSI-RS can be 1 / 2, 1 / 4 or 1 / 8; when the suband size = 16, the subband occupation density of the CSI-RS can be 1 / 2, 1 / 4, 1 / 8 or 1 / 16; when the suband size = 32, the subband occupation density of the CSI-RS can be 1 / 2, 1 / 4, 1 / 8, 1 / 16 or 1 / 32.

[0102] It should be noted that, as Figure 4a and Figure 4b shown in the embodiments, the CSI-RS resources located in the 4 slots can be understood as 4 CSI-RS resources occupying different slots respectively, and it can also represent that multiple time domain repetitions of the same CSI-RS resource occupy different slots respectively.

[0103] Optionally, the time domain type of the at least two CSI-RS resources includes at least one of the following:

[0104] Periodic CSI-RS resource;

[0105] Semi-persistent CSI-RS resource;

[0106] Aperiodic CSI-RS resource.

[0107] In the embodiment, the at least two CSI-RS resources can include CSI-RS resources of the same or different time domain types. In this way, the flexibility of the distribution of the at least two CSI-RS resources in the time domain can be improved, and by making the at least two CSI-RS resources include CSI-RS resources of different time domain types, the utilization of the at least two CSI-RS resources in the time domain can be improved.

[0108] It should be noted that, in the case where the at least two CSI-RS resources include at least two types of CSI-RS resources, the CSI measurement method further includes at least one of the following:

[0109] Activating and / or deactivating the semi-persistent CSI-RS resource through a medium access control unit (Medium Access Control-Control Element, MAC CE);

[0110] The aperiodic CSI-RS resource is activated by downlink control information (DCI);

[0111] The time domain type includes periodic CSI-RS resources, aperiodic CSI-RS resources, and semi-persistent CSI-RS resources.

[0112] Unlike the periodic transmission of CSI-RS on periodic CSI-RS resources, the semi-persistent CSI-RS resources and the aperiodic CSI-RS resources need to be indicated to activate or activate time, so that the terminal measures within the time when the semi-persistent CSI-RS resources and the aperiodic CSI-RS resources are activated or activated. In this embodiment, the semi-persistent CSI-RS resources can be activated and / or deactivated by MAC CE, or the aperiodic CSI-RS resource can also be activated by DCI, so that the terminal can measure the semi-persistent CSI-RS resource and the aperiodic CSI-RS resource.

[0113] Optionally, the CSI measurement configuration information further comprises:

[0114] The eighth CSI-RS resource indication information is used to indicate the time domain repetition number of each of the at least two configured CSI-RS resources, wherein the time domain symbol positions of the at least two CSI-RS resources in the same time domain repetition are in the same time slot.

[0115] In a specific implementation, the time domain repetition number can be the repetition number in time slots, and the time domain repetition number of the at least two CSI-RS resources can be understood as that the time domain symbol positions of the at least two CSI-RS resources in the same time domain repetition can be allocated in a time slot, and the network side device can indicate that the time domain repetition numbers of all CSI-RS resources in the at least two CSI-RS resources are the same.

[0116] Further, the CSI measurement configuration information further comprises:

[0117] The ninth CSI-RS resource indication information is used to indicate the time slot interval between the time domain repetitions of the at least two configured CSI-RS resources.

[0118] On the basis that the time domain symbol positions of the at least two CSI-RS resources can be allocated in a time slot and the network side device indicates the time domain repetition number of the CSI-RS resource, the network side device can further indicate the time slot interval between the time domain repetitions corresponding to the at least two CSI-RS resources, so as to improve the density of the distribution of the at least two CSI-RS resources in the time domain.

[0119] Optionally, the CSI measurement method further comprises:

[0120] The network-side device sends first resource indication information to the terminal, and the first resource indication information is used to indicate that part of the at least two CSI-RS resources is valid or invalid.

[0121] In this embodiment, when at least two CSI-RS resources are configured, part of the CSI-RS resources can be indicated to be valid or invalid by the first resource indication information, so as to realize flexible configuration of the CSI-RS resources. For example, when the at least two CSI-RS resources include four periodic CSI-RS resources, two of the CSI-RS resources can be indicated to be invalid according to the measurement requirement, so as to avoid waste of resources.

[0122] In some other embodiments, when the target CSI measurement resource includes a first CSI-RS resource (i.e., the number of CSI-RS resources in the target CSI measurement resource is only one, for example, the target CSI measurement resource is one CSI-RS resource, or the target CSI measurement resource is a combination of a TRS resource set and one CSI-RS resource), the CSI measurement configuration information includes:

[0123] Seventh CSI-RS resource indication information used to indicate the time domain repetition number of the configured first CSI-RS resource.

[0124] The difference between this embodiment and the embodiment in which the target CSI measurement resource is at least two CSI-RS resources is that only one CSI-RS resource is configured in this embodiment, and the one CSI-RS resource is configured to be repeated at least twice in the time domain to meet the measurement requirement of the target CSI information.

[0125] Optionally, the time domain repetition of the first CSI-RS resource occurs within one slot or N slots, and N is equal to the time domain repetition number of the first CSI-RS resource.

[0126] In implementation, the first CSI-RS resource can be repeated at least twice in one slot, or the time domain repetition of the first CSI-RS resource can span multiple slots, i.e., each time domain repetition corresponds to one slot. For example, as shown in the embodiments of Figure 4a and Figure 4b The CSI-RS resource located in the four slots can be four time domain repetitions of the same CSI-RS resource. It should be noted that, in the embodiments of Figure 4a and Figure 4bIn the illustrated embodiment, it can be seen that the frequency domain resources occupied by the 4 time domain repetitions of the CSI-RS resource are different. In other embodiments, a more general possibility is that the frequency domain resources occupied by the 4 time domain repetitions of the CSI-RS resource are the same.

[0127] Further, in the case where the time domain repetition of the first CSI-RS resource occurs within one slot, the CSI measurement configuration information further includes at least one of:

[0128] tenth CSI-RS resource indication information, used to indicate that the configured first CSI-RS resource performs the time domain repetition occurring within one slot within L slots, L being an integer greater than or equal to 1;

[0129] eleventh CSI-RS resource indication information, used to indicate the symbol interval between the time domain repetitions of the configured first CSI-RS resource.

[0130] wherein L represents the number of slots of the time domain repetition, and the first CSI-RS resource occurs at least twice in each slot.

[0131] In addition, through the above-mentioned eleventh CSI-RS resource indication information, the symbol interval between the adjacent two time domain repetitions of the first CSI-RS resource can be indicated to adjust the accuracy of measurement based on the first CSI-RS resource.

[0132] In the present embodiment, the number of time domain repetitions of the first CSI-RS resource within one slot or N slots can be indicated, which can improve the density of the distribution of the CSI-RS resource in the time domain.

[0133] <Case Two>

[0134] In the case where the target CSI measurement resource includes a TRS resource, for example, the target CSI measurement resource is at least two TRS resource sets, or the target CSI measurement resource is a combination of a TRS resource set and a CSI-RS resource, etc., the CSI measurement configuration information includes TRS resource indication information.

[0135] Optionally, when the target CSI measurement resource includes a TRS resource, the CSI measurement configuration information includes at least one of the following TRS resource indication information:

[0136] first TRS resource indication information, used to indicate the number of configured TRS resource sets;

[0137] second TRS resource indication information, used to indicate the index of the TRS resource set;

[0138] a third TRS resource indication information, used for indicating a number of measurement resources in the TRS resource set;

[0139] a fourth TRS resource indication information, used for indicating an index of a measurement resource in the TRS resource set;

[0140] a fifth TRS resource indication information, used for indicating a number of measurement resources in each time slot in the TRS resource set, respectively;

[0141] a sixth TRS resource indication information, used for indicating a time domain repetition number of the TRS resource set;

[0142] a seventh TRS resource indication information, used for indicating a measurement granularity of the TRS resource set.

[0143] In the prior art, the TRS can be used for timing estimation, delay spread estimation, frequency offset estimation and Doppler spread estimation. Among them, the timing estimation and the frequency offset estimation can be used to complete synchronization of the transmitter and the receiver, and the results of the delay spread estimation and the Doppler spread estimation are important parameters of channel estimation, which can be used to assist the Demodulation Reference Signal (DMRS) to complete more accurate channel estimation.

[0144] In the embodiments of the present application, the network side device can configure at least two TRS resource sets for the terminal, and each TRS resource set can include at least two TRS resources, at this time, the network side device can indicate the number of the configured TRS resource sets, the index of each TRS resource set, the number of the TRS resources included in each TRS resource set, and the index of each TRS resource in each TRS resource set, etc., so that the terminal knows the configuration of the TRS resources, and performs corresponding CSI measurement accordingly.

[0145] It should be noted that in the implementation, in the case that the third TRS resource indication information and / or the fifth TRS resource indication information are not included in the above-mentioned CSI measurement configuration information, the number of measurement resources in the TRS resource set and / or the number of measurement resources in each time slot in the TRS resource set can also be determined according to the default agreement between the network side device and the terminal, which is not limited here.

[0146] Of course, in actual application, the network side device can also configure a combination of one TRS resource set and one CSI-RS resource for the terminal, or a combination of one TRS resource set and at least two CSI-RS resources, or a combination of two TRS resource sets and one CSI-RS resource, which is not limited here.

[0147] It is worth pointing out that the embodiments of the present application are not the same as the configuration process and use of the TRS in the prior art, wherein the TRS in the prior art is a reference signal for time-frequency tracking configured flexibly by the network side device according to the needs of the terminal, and the terminal does not report the measurement result of the TRS; while in the embodiments of the present application, the network side device actively configures the TRS resource to the terminal, and configures the terminal to report the target CSI information measured on the TRS resource.

[0148] In addition, similar to the target CSI measurement resource being a CSI-RS resource, the time domain repetition number of the indicated configured TRS resource set can be understood as the time domain repetition number of the TRS resource set in units of slots, which will not be elaborated here.

[0149] In addition, the measurement granularity of the TRS resource set can be a bandwidth or a sub-band, which will not be specifically limited here.

[0150] In the present embodiment, by configuring the TRS resource to the terminal, the terminal can measure the target CSI information on the TRS resource, and report the measured target CSI information to the network side device, so that the network side device can perform channel prediction accordingly.

[0151] <Case Three>

[0152] In the case that the target CSI measurement resource is a reference signal resource combination, the reference signal resource combination indicates that the resources for the same measurement include at least two different types of resource combinations, for example: the reference signal resource combination includes a combination of CSI-RS resources and TRS resources. The CSI-RS resources and the TRS resources are used together for the same measurement.

[0153] For example, as shown in Figure 3d , it is assumed that the reference signal resource combination includes NZP CSI-RS and a single-slot structure TRS resource set, wherein each TRS resource in the TRS resource set has two times of time domain repetition at the time domain level.

[0154] Optionally, the reference signal resource combination includes a combination of CSI-RS resources and TRS resources, the CSI measurement configuration information includes CSI-RS resource indication information and TRS resource indication information, and

[0155] The first resource relationship indication information is used to indicate the association relationship between the CSI-RS resource and the TRS resource.

[0156] It should be noted that the CSI-RS resource indication information described above can be the CSI-RS resource indication information described in the above <case one>, and the TRS resource indication information can be the TRS resource indication information described in the above <case two>, which will not be described in detail here.

[0157] In the embodiment, the CSI-RS resource and the TRS resource can be used for the same CSI measurement, and the flexibility of the CSI measurement resource for measuring the target CSI information is improved.

[0158] Optionally, the network side device can configure the period and bandwidth of the CSI-RS resource and the TRS resource respectively, so that the period of the CSI-RS resource and the TRS resource can be different, and the bandwidth of the CSI-RS resource and the TRS resource can also be different. For example, the bandwidth of the CSI-RS resource is greater than the bandwidth of the TRS resource, or the bandwidth of the CSI-RS resource is less than the bandwidth of the TRS resource.

[0159] Of course, in the implementation, the period and / or bandwidth of the CSI-RS resource and the TRS resource can also be the same, which is not specifically limited here.

[0160] Optionally, the CSI measurement configuration information further includes at least one resource relationship indication information:

[0161] The second resource relationship indication information is used to indicate the period relationship of the configured CSI-RS resource and the TRS resource.

[0162] The third resource relationship indication information is used to indicate the bandwidth relationship of the configured CSI-RS resource and the TRS resource.

[0163] The period relationship can include that the period of the CSI-RS resource and the period of the TRS resource must be the same, or the period of the CSI-RS resource and the period of the TRS resource are allowed to be different; the bandwidth relationship can include that the bandwidth of the CSI-RS resource and the bandwidth of the TRS resource must be the same, or the bandwidth of the CSI-RS resource is greater than the bandwidth of the TRS resource set, or the bandwidth of the CSI-RS resource is less than the bandwidth of the TRS resource set.

[0164] Optionally, the first resource relationship indication information includes at least one of the following:

[0165] The first sub-indication information is used to indicate the explicit binding relationship of the CSI-RS resource and the TRS resource set.

[0166] The second sub-indication information is used to indicate the quasi co-location (QCL) reference relationship of the CSI-RS resource and the TRS resource set.

[0167] In implementation, the first sub-indication information can be used to indicate the binding relationship between the CSI-RS resource and the TRS resource set, so that the CSI-RS resource and the TRS resource set with the binding relationship are used for the same measurement.

[0168] Of course, in implementation, the QCL reference relationship between the CSI-RS resource and the TRS resource set can also be used to indicate that the CSI-RS resource and the TRS resource set are used for the same measurement, which is not specifically limited here.

[0169] In some embodiments, the above QCL reference relationship can be: indicating the TRS resource set as the QCL reference of the CSI-RS resource. For example: the average delay, delay spread, Doppler frequency offset, Doppler spread, spatial reception parameter and the like of the channel experienced by the symbol on the antenna port of the CSI-RS resource can be inferred from the antenna port in the TRS resource set.

[0170] In implementation, the above QCL reference relationship can be determined according to the actual transmission scenario, and the corresponding relationship between the QCL reference relationship and the transmission application scenario is as follows:

[0171] 1) qcl-typeA, {Doppler frequency offset, Doppler spread, average delay, delay spread}

[0172] 2) qcl-typeB, {Doppler frequency offset, Doppler spread}

[0173] 3) qcl-typeC, {Doppler frequency offset, average delay}

[0174] 4) qcl-typeD, {spatial reception parameter}

[0175] Generally, the TRS will be in the form of QCL-typeA as the QCL reference source of the Demodulation Reference Signal (DMRS) corresponding to the Physical downlink shared channel (PDSCH) or the DMRS corresponding to the Physical downlink control channel (PDCCH).

[0176] In this embodiment, the QCL reference relationship between the CSI-RS resource and the TRS resource set can be indicated in the CSI measurement configuration information, so as to indicate that the CSI-RS resource and the TRS resource set with the QCL reference relationship are used for the same measurement.

[0177] As an optional implementation, the target CSI measurement resource is further used to measure first CSI information, and the first CSI information includes at least one of the following:

[0178] Beam information, a precoding matrix indication (PMI), a CSI-RS resource indication (CRI), channel quality indication (CQI), rank indication (RI), layer indication (LI), reference signal received power (RSRP), and signal to interference plus noise ratio (SINR).

[0179] Further, in the case where the target CSI measurement resource is at least two CSI-RS resources, part of the at least two CSI-RS resources is used to measure the target CSI information, and another part of the at least two CSI-RS resources is used to measure the first CSI information.

[0180] In the case where the target CSI measurement resource is a first CSI-RS resource with at least two time-domain repetitions, part of the CSI-RS resources corresponding to the time-domain repetitions of the first CSI-RS resource is used to measure the target CSI information, and another part of the CSI-RS resources corresponding to the time-domain repetitions of the first CSI-RS resource is used to measure the first CSI information.

[0181] In the case where the target CSI measurement resource is a combination of a TRS resource set and a CSI-RS resource, the TRS resource set is used to measure the target CSI information, and the CSI-RS resource is used to measure the first CSI information.

[0182] In this embodiment, at least two resources for the same measurement or at least two time-domain repetitions of one resource for the same measurement can be used to measure different CSI information, respectively. In this way, each CSI measurement resource can be configured according to the measurement requirements of the CSI information to be measured, so as to improve the matching degree of the CSI measurement resource and the measurement requirements of the CSI information to be measured.

[0183] Optionally, before the network-side device receives the target CSI information from the terminal, the method further includes:

[0184] The network-side device sends a CSI report configuration associated with the CSI measurement configuration information to the terminal, and the CSI report configuration is used to configure the terminal to report the target CSI information.

[0185] The CSI report configuration (Report setting / CSI-ReportConfig) can be configured as at least one of the following three types:

[0186] Periodic CSI reporting (P-CSI): transmitted only on Physical Uplink Control Channel (PUCCH);

[0187] Semi-Persistent CSI reporting (SP-CSI): transmitted on PUCCH or Physical Uplink Shared Channel (PUSCH);

[0188] Aperiodic CSI reporting (AP-CSI): transmitted only on PUSCH.

[0189] In addition, the CSI resource configuration (Resource setting / CSI-ResourceConfig) of the above-mentioned CSI measurement configuration is as follows:

[0190] M≥1 resource configurations (Resource setting);

[0191] One resource configuration contains S≥1 CSI resource sets (Resource set);

[0192] One resource set contains Ks≥1 CSI resources (Resource), including CSI-RS, TRS, etc.

[0193] In implementation, the association between the CSI measurement configuration information and the CSI reporting configuration can be one-to-one association or many-to-one association, for example, one CSI reporting configuration is associated with one CSI measurement configuration, which is not specifically limited herein.

[0194] In this embodiment, the measurement and reporting of CSI information are performed by associating the CSI reporting configuration information with the CSI measurement configuration information, so that the terminal can timely report the measured CSI information.

[0195] Optionally, after the network side device receives the target CSI information from the terminal, the method further comprises:

[0196] The network side device predicts the channel state change corresponding to the terminal according to the target CSI information.

[0197] In this embodiment, the network side device can predict the channel state change corresponding to the terminal according to the target CSI information, and further can perform data transmission matching the predicted channel state corresponding to the terminal, so as to improve the communication performance.

[0198] In summary, the CSI measurement method provided in the embodiments of the present application configures CSI-RS measurement resources that can be used to more accurately measure the time domain characteristics and / or frequency domain characteristics of a channel, so that the terminal more accurately measures the time domain characteristics and / or frequency domain characteristics of the channel. The CSI-RS measurement resources can include CSI-RS resources, TRS resources, or a combination of CSI-RS resources and TRS resources.

[0199] I. The configuration of the CSI-RS resources can include at least one of the following:

[0200] a) The ports and / or densities and / or bandwidths of at least two CSI-RS resources used for the same measurement can be different;

[0201] b) A single CSI-RS resource used for measurement can be repeated in the time domain, and the number of repetitions can be configured;

[0202] c) CSI-RSs with different time domain characteristics can be configured in the same CSI measurement configuration and used for the same measurement.

[0203] II. The configuration of the TRS resources can include at least one of the following:

[0204] a) The repetition of the TRS resource set in the time domain is configured;

[0205] b) The number of TRS resources in the TRS resource set can be configured.

[0206] III. The configuration of the joint measurement of CSI-RS and TRS can include at least one of the following:

[0207] a) The association between the CSI-RS resources and the TRS resources is configured, and the associated CSI-RS resources and TRS resources are used for the same measurement;

[0208] b) The bandwidth relationship and the periodic relationship of the CSI-RS resources and the TRS resources can be configured.

[0209] Please refer to Figure 5 , another CSI measurement method provided in the embodiments of the present application can be executed by a terminal, as shown in Figure 5 , the CSI measurement method applied to the terminal can include the following steps:

[0210] Step 501, the terminal receives CSI measurement configuration information from a network side device.

[0211] Step 502, the terminal measures target CSI information using target CSI measurement resources according to the CSI measurement configuration information; wherein the target CSI information includes at least one of the following:

[0212] Doppler frequency offset, Doppler spread, Doppler spectrum, time-domain channel correlation matrix, time delay spread, average time delay, time delay spectrum, and frequency-domain channel correlation matrix.

[0213] Step 503: The terminal sends the target CSI information to the network-side device.

[0214] It should be noted that, as Figure 5 The CSI measurement method shown is similar to... Figure 2 The CSI measurement method shown corresponds to that of the CSI measurement method shown, with the only difference being that, for example... Figure 2 The CSI measurement method shown is performed by network-side devices, while... Figure 5 The CSI measurement method shown is executed by the terminal, which will not be elaborated further here.

[0215] Optionally, the target CSI measurement resources include:

[0216] Channel State Information Reference Signal (CSI-RS) resources; or

[0217] Tracking reference signal TRS resources; or

[0218] Reference signal resource combination.

[0219] Optionally, the reference signal resource combination includes a combination of CSI-RS resources and TRS resources, and the CSI measurement configuration information includes CSI-RS resource indication information and TRS resource indication information, and,

[0220] First resource relationship indication information is used to indicate the association between the CSI-RS resource and the TRS resource.

[0221] Optionally, when the target CSI measurement resource includes at least two CSI-RS resources, the CSI measurement configuration information includes at least one of the following CSI-RS resource indication information:

[0222] The first CSI-RS resource indication information is used to indicate the number of configured CSI-RS resources;

[0223] The second CSI-RS resource indication information is used to indicate the index of the CSI-RS resource;

[0224] The third CSI-RS resource indication information is used to indicate the number of ports of the CSI-RS resource;

[0225] The fourth CSI-RS resource indication information is used to indicate the time-domain interval between CSI-RS resources;

[0226] The fifth CSI-RS resource indication information is used to indicate the bandwidth of CSI-RS resources;

[0227] sixth CSI-RS resource indication information, used for indicating frequency domain density of the CSI-RS resource.

[0228] Optionally, when the target CSI measurement resource comprises the first CSI-RS resource, the CSI measurement configuration information comprises:

[0229] seventh CSI-RS resource indication information, used for indicating time domain repetition number of the configured first CSI-RS resource.

[0230] Optionally, when the target CSI measurement resource comprises a TRS resource, the CSI measurement configuration information comprises at least one of the following TRS resource indication information:

[0231] first TRS resource indication information, used for indicating number of configured TRS resource sets;

[0232] second TRS resource indication information, used for indicating index of a TRS resource set;

[0233] third TRS resource indication information, used for indicating number of measurement resources in a TRS resource set;

[0234] fourth TRS resource indication information, used for indicating index of a measurement resource in a TRS resource set;

[0235] fifth TRS resource indication information, used for indicating number of measurement resources in a TRS resource set in each time slot respectively;

[0236] sixth TRS resource indication information, used for indicating time domain repetition number of a TRS resource set;

[0237] seventh TRS resource indication information, used for indicating measurement granularity of a TRS resource set.

[0238] Optionally, before the terminal sends the target CSI information to the network side device, the CSI measurement method further comprises:

[0239] the terminal receives, from the network side device, CSI report configuration associated with the CSI measurement configuration information;

[0240] the terminal sends the target CSI information to the network side device, comprising:

[0241] the terminal sends the target CSI information to the network side device according to the CSI report configuration.

[0242] Optionally, the target CSI measurement resource is also used for measuring first CSI information, and the first CSI information comprises at least one of the following:

[0243] Beam information, precoding matrix indication (PMI), CSI-RS resource indication (CRI), channel quality indication (CQI), rank indication (RI), layer indication (LI), reference signal received power (RSRP), and signal to interference plus noise ratio (SINR).

[0244] Optionally, the terminal measures target CSI information by using the target CSI measurement resource according to the CSI measurement configuration information, including:

[0245] In a case where the target CSI resource is at least two CSI-RS resources, the terminal measures the target CSI information by using a part of the CSI-RS resources, and measures the first CSI information by using another part of the CSI-RS resources.

[0246] In a case where the target CSI resource is the first CSI-RS resource with at least two times of time domain repetition, the terminal measures the target CSI information by using the CSI-RS resource corresponding to a part of times of time domain repetition of the first CSI-RS resource, and measures the first CSI information by using the CSI-RS resource corresponding to another part of times of time domain repetition of the first CSI-RS resource.

[0247] In a case where the target CSI resource is a combination of a CSI-RS resource and a TRS resource, the terminal measures the target CSI information by using the TRS resource, and measures the first CSI information by using the CSI-RS resource.

[0248] The CSI measurement method for a terminal provided in the embodiments of the present application, in combination with the CSI measurement method for a network side device as shown in Figure 2 The target CSI information can be used by the network side device to predict the channel state change of the terminal, and then to adjust the precoding, modulation order, code rate, etc. according to the predicted channel state, so as to better match the data transmission after the change of the channel state.

[0249] It should be noted that the CSI measurement method provided in the embodiments of the present application can be executed by a CSI measurement device, or a control module in the CSI measurement device for executing the CSI measurement method. In the embodiments of the present application, the CSI measurement device executing the CSI measurement method is taken as an example to illustrate the CSI measurement device provided in the embodiments of the present application.

[0250] Please refer to Figure 6 The first CSI measurement device 600 provided in the embodiments of the present application is applied to a network side device, as shown in Figure 6As shown, the first CSI measurement device 600 includes:

[0251] A first sending module 601 is configured to send CSI measurement configuration information to a terminal, the CSI measurement configuration information being used to configure target CSI measurement resources associated with target CSI information;

[0252] A first receiving module 602 is configured to receive the target CSI information from the terminal;

[0253] The target CSI information includes at least one of the following:

[0254] Doppler frequency offset, Doppler spread, Doppler spectrum, time-domain channel correlation matrix, delay spread, average delay, delay spectrum, and frequency-domain channel correlation matrix.

[0255] Optionally, the target CSI measurement resources include:

[0256] Channel state information reference signal (CSI-RS) resources; or

[0257] Tracking reference signal (TRS) resources; or

[0258] Reference signal resource combinations.

[0259] Optionally, the reference signal resource combinations include combinations of CSI-RS resources and TRS resources, the CSI measurement configuration information includes CSI-RS resource indication information and TRS resource indication information, and

[0260] First resource relationship indication information is used to indicate the association relationship between the CSI-RS resources and the TRS resources.

[0261] Optionally, when the target CSI measurement resources include at least two CSI-RS resources, the CSI measurement configuration information includes at least one of the following CSI-RS resource indication information:

[0262] First CSI-RS resource indication information is used to indicate the number of configured CSI-RS resources;

[0263] Second CSI-RS resource indication information is used to indicate the index of the CSI-RS resources;

[0264] Third CSI-RS resource indication information is used to indicate the port number of the CSI-RS resources;

[0265] Fourth CSI-RS resource indication information is used to indicate the time-domain interval between the CSI-RS resources;

[0266] Fifth CSI-RS resource indication information is used to indicate the bandwidth of the CSI-RS resources.

[0267] sixth CSI-RS resource indication information, used for indicating frequency domain density of the CSI-RS resource.

[0268] Optionally, when the target CSI measurement resource comprises a first CSI-RS resource, the CSI measurement configuration information comprises:

[0269] seventh CSI-RS resource indication information, used for indicating time domain repetition number of the first CSI-RS resource.

[0270] Optionally, when the target CSI measurement resource comprises a TRS resource, the CSI measurement configuration information comprises at least one of the following TRS resource indication information:

[0271] first TRS resource indication information, used for indicating number of configured TRS resource sets;

[0272] second TRS resource indication information, used for indicating index of a TRS resource set;

[0273] third TRS resource indication information, used for indicating number of measurement resources in a TRS resource set;

[0274] fourth TRS resource indication information, used for indicating index of a measurement resource in a TRS resource set;

[0275] fifth TRS resource indication information, used for indicating number of measurement resources in a TRS resource set in each time slot respectively;

[0276] sixth TRS resource indication information, used for indicating time domain repetition number of a TRS resource set;

[0277] seventh TRS resource indication information, used for indicating measurement granularity of a TRS resource set.

[0278] Optionally, the CSI measurement configuration information further comprises:

[0279] eighth CSI-RS resource indication information, used for indicating time domain repetition number of each of the configured at least two CSI-RS resources, wherein time domain symbol positions occupied by the at least two CSI-RS resources in the same time domain repetition are in the same time slot.

[0280] Optionally, the CSI measurement configuration information further comprises:

[0281] ninth CSI-RS resource indication information, used for indicating time slot interval between time domain repetitions of the configured at least two CSI-RS resources.

[0282] Optionally, the time-domain repetition of the first CSI-RS resource occurs within one time slot or N time slots, N equals to the number of time-domain repetitions of the first CSI-RS resource.

[0283] Optionally, in the case that the time-domain repetition of the first CSI-RS resource occurs within one time slot, the CSI measurement configuration information further comprises at least one of the following:

[0284] tenth CSI-RS resource indication information, used for indicating that the configured first CSI-RS resource performs the time-domain repetition occurring within one time slot within L time slots, L being an integer greater than or equal to 1;

[0285] eleventh CSI-RS resource indication information, used for indicating a symbol interval between the time-domain repetitions of the configured first CSI-RS resource.

[0286] Optionally, the first CSI measurement device 600 further comprises:

[0287] a second sending module, configured to send first resource indication information to the terminal, the first resource indication information being used for indicating that part of the CSI-RS resources in the at least two CSI-RS resources are valid or invalid.

[0288] Optionally, in the case that the at least two CSI-RS resources comprise at least two time-domain types of CSI-RS resources, the method further comprises at least one of the following:

[0289] activating and / or deactivating the semi-persistent CSI-RS resource through a medium access control unit (MAC) CE;

[0290] indicating the aperiodic CSI-RS resource to be valid through downlink control information (DCI);

[0291] wherein the time-domain types comprise periodic CSI-RS resources, aperiodic CSI-RS resources and semi-persistent CSI-RS resources.

[0292] Optionally, the number of ports of a target CSI-RS resource in the at least two CSI-RS resources is X, and the number of ports of the other CSI-RS resources in the at least two CSI-RS resources except the target CSI-RS resource is Y, wherein Y equals to 1 or 2, and X is greater than or equal to Y.

[0293] Optionally, the number of ports and / or occupied bandwidth and / or frequency-domain density of each of the at least two CSI-RS resources are different.

[0294] Optionally, the port number and / or occupied bandwidth and / or frequency domain density of at least two time domain repetitions of the first CSI-RS resource are different.

[0295] Optionally, the frequency domain density includes at least one of resource block (RB) occupation density and subband occupation density.

[0296] Optionally, the first resource relationship indication information includes at least one of:

[0297] First sub-indication information, used to indicate an explicit binding relationship between the CSI-RS resource and the TRS resource set;

[0298] Second sub-indication information, used to indicate a quasi co-location (QCL) reference relationship between the CSI-RS resource and the TRS resource set.

[0299] Optionally, the target CSI measurement resource is also used to measure first CSI information, and the first CSI information includes at least one of:

[0300] Beam information, precoding matrix indication (PMI), CSI-RS resource indication (CRI), channel quality indication (CQI), rank indication (RI), layer indication (LI), reference signal received power (RSRP), and signal to interference plus noise ratio (SINR).

[0301] Optionally, in a case where the target CSI measurement resource is at least two CSI-RS resources, part of the at least two CSI-RS resources is used to measure the target CSI information, and another part of the at least two CSI-RS resources is used to measure the first CSI information.

[0302] In a case where the target CSI measurement resource is a first CSI-RS resource with at least two time domain repetitions, a part of the first CSI-RS resource corresponding to a number of time domain repetitions is used to measure the target CSI information, and another part of the first CSI-RS resource corresponding to a number of time domain repetitions is used to measure the first CSI information.

[0303] In a case where the target CSI measurement resource is a combination of a TRS resource set and a CSI-RS resource, the TRS resource set is used to measure the target CSI information, and the CSI-RS resource is used to measure the first CSI information.

[0304] Optionally, the first CSI measurement device 600 further includes:

[0305] A channel prediction module, configured to predict a channel state change corresponding to the terminal according to the target CSI information.

[0306] The first CSI measurement device 600 provided by the embodiments of the present application can realize Figure 2 The various processes realized by the method embodiments shown and the same technical effects are achieved. To avoid repetition, details are not described herein.

[0307] Please refer to Figure 7 The second CSI measurement device 700 provided by the embodiments of the present application is applied to a terminal, such as Figure 7 The second CSI measurement device 700 includes:

[0308] The second receiving module 701 is configured to receive CSI measurement configuration information from a network side device;

[0309] The measurement module 702 is configured to measure target CSI information by using target CSI measurement resources according to the CSI measurement configuration information;

[0310] The fourth sending module 703 is configured to send the target CSI information to the network side device;

[0311] The target CSI information includes at least one of the following:

[0312] Doppler frequency offset, Doppler spread, Doppler spectrum, time domain channel correlation matrix, delay spread, average delay, delay spectrum and frequency domain channel correlation matrix.

[0313] Optionally, the target CSI measurement resources include:

[0314] CSI-RS resources; or

[0315] TRS resources; or

[0316] Reference signal resource combinations.

[0317] Optionally, the reference signal resource combination includes a combination of CSI-RS resources and TRS resources, the CSI measurement configuration information includes CSI-RS resource indication information and TRS resource indication information, and

[0318] The first resource relationship indication information is used to indicate the association relationship between the CSI-RS resources and the TRS resources.

[0319] Optionally, when the target CSI measurement resources include at least two CSI-RS resources, the CSI measurement configuration information includes at least one of the following CSI-RS resource indication information:

[0320] The first CSI-RS resource indication information is used to indicate the number of configured CSI-RS resources;

[0321] second CSI-RS resource indication information, used for indicating an index of the CSI-RS resource;

[0322] third CSI-RS resource indication information, used for indicating a port number of the CSI-RS resource;

[0323] fourth CSI-RS resource indication information, used for indicating a time domain interval between the CSI-RS resources;

[0324] fifth CSI-RS resource indication information, used for indicating a bandwidth of the CSI-RS resource;

[0325] sixth CSI-RS resource indication information, used for indicating a frequency domain density of the CSI-RS resource.

[0326] Optionally, when the target CSI measurement resource includes the first CSI-RS resource, the CSI measurement configuration information includes:

[0327] seventh CSI-RS resource indication information, used for indicating a time domain repetition number of the configured first CSI-RS resource.

[0328] Optionally, when the target CSI measurement resource includes a TRS resource, the CSI measurement configuration information includes at least one of the following TRS resource indication information:

[0329] first TRS resource indication information, used for indicating a number of configured TRS resource sets;

[0330] second TRS resource indication information, used for indicating an index of the TRS resource set;

[0331] third TRS resource indication information, used for indicating a number of measurement resources in the TRS resource set;

[0332] fourth TRS resource indication information, used for indicating an index of the measurement resource in the TRS resource set;

[0333] fifth TRS resource indication information, used for indicating a number of measurement resources in each time slot in the TRS resource set, respectively;

[0334] sixth TRS resource indication information, used for indicating a time domain repetition number of the TRS resource set;

[0335] seventh TRS resource indication information, used for indicating a measurement granularity of the TRS resource set.

[0336] Optionally, the second CSI measurement device 700 further includes:

[0337] a third receiving module, configured to receive, from the network-side device, a CSI report configuration associated with the CSI measurement configuration information;

[0338] a fourth sending module 703, specifically configured to:

[0339] send the target CSI information to the network-side device according to the CSI report configuration.

[0340] Optionally, the target CSI measurement resource is further used to measure first CSI information, and the first CSI information includes at least one of the following:

[0341] beam information, a precoding matrix indicator (PMI), a CSI-RS resource indicator (CRI), a channel quality indicator (CQI), a rank indicator (RI), a layer indicator (LI), a reference signal received power (RSRP), and a signal to interference plus noise ratio (SINR).

[0342] Optionally, the measurement module 702 is specifically configured to:

[0343] in a case where the target CSI resource is at least two CSI-RS resources, measure the target CSI information by using a part of the CSI-RS resources and measure the first CSI information by using another part of the CSI-RS resources;

[0344] in a case where the target CSI resource is a first CSI-RS resource with at least two times of time-domain repetition, measure the target CSI information by using CSI-RS resources corresponding to a part of times of time-domain repetition of the first CSI-RS resource, and measure the first CSI information by using CSI-RS resources corresponding to another part of times of time-domain repetition of the first CSI-RS resource;

[0345] in a case where the target CSI resource is a combination of a CSI-RS resource and a TRS resource, measure the target CSI information by using the TRS resource, and measure the first CSI information by using the CSI-RS resource.

[0346] The second CSI measurement apparatus 700 in the embodiments of the present application can be an apparatus, an apparatus with an operating system, or an electronic device, and can also be a component in a terminal, an integrated circuit, or a chip. The apparatus or the electronic device can be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal can include, but is not limited to, the types of the terminal 11 listed above, and the non-mobile terminal can be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a cashier machine, or a self-service machine, etc., and the embodiments of the present application are not limited specifically.

[0347] The second CSI measurement device 700 provided by the embodiments of the present application can realize Figure 5 The various processes realized by the method embodiments shown and the same technical effects are achieved, and thus details are not repeated here.

[0348] Optionally, as Figure 8 The embodiments of the present application also provide a communication device 800, which includes a processor 801, a memory 802, programs or instructions stored in the memory 802 and executable on the processor 801, for example, when the communication device 800 is a terminal, the programs or instructions are executed by the processor 801 to realize the various processes of the method embodiments shown in Figure 5 The communication device 800 is a network side device, the programs or instructions are executed by the processor 801 to realize the various processes of the method embodiments shown in Figure 2 The communication device 800 is a network side device, the programs or instructions are executed by the processor 801 to realize the various processes of the method embodiments shown in

[0349] The embodiments of the present application also provide a terminal, which includes a processor and a communication interface, the communication interface is configured to receive CSI measurement configuration information from a network side device; the processor is configured to measure target CSI information by using target CSI measurement resources according to the CSI measurement configuration information; and the communication interface is further configured to send the target CSI information to the network side device, wherein the target CSI information includes at least one of the following: Doppler frequency offset, Doppler spread, Doppler spectrum, time domain channel correlation matrix, delay spread, average delay, delay spectrum, and frequency domain channel correlation matrix.

[0350] The terminal embodiment corresponds to the terminal side method embodiment described above, and the various implementation processes and implementation manners of the method embodiments described above can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, Figure 9 A hardware structure diagram of a terminal for implementing the embodiments of the present application.

[0351] The terminal 900 includes, but is not limited to, at least part of the components such as a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, and a processor 910.

[0352] Those skilled in the art can understand that the terminal 900 can also include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 910 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. 9The terminal structure shown in the figures does not constitute a limitation on the terminal, and the terminal can include more or fewer components than shown, or combine certain components, or arrange different components, which will not be described here.

[0353] It should be understood that in the embodiments of the present application, the input unit 904 can include a graphics processor (GPU) 9041 and a microphone 9042. The graphics processor 9041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 906 can include a display panel 9061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 907 includes a touch panel 9071 and other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 can include two parts of a touch detection device and a touch controller. The other input devices 9072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), trackballs, mice, joysticks, which will not be described here.

[0354] In the embodiments of the present application, the radio frequency unit 901 receives the downlink data from the network side device and processes it by the processor 910. In addition, the uplink data is sent to the network side device. Generally, the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0355] The memory 909 can be used to store software programs or instructions and various data. The memory 909 can mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area can store an operating system, at least one application program or instruction required by a function (such as a sound playing function, an image playing function, etc.), etc. In addition, the memory 909 can include a high-speed random access memory, and can also include a non-volatile memory, which can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM) or a flash memory. For example, at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state memory device.

[0356] The processor 910 can include one or more processing units; optionally, the processor 910 can integrate an application processor and a modem processor, wherein the application processor mainly processes operating systems, user interfaces, and application programs or instructions, and the modem processor mainly processes wireless communication, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 910.

[0357] The radio frequency unit 901 is configured to receive CSI measurement configuration information from a network side device;

[0358] The processor 910 is configured to measure target CSI information by using target CSI measurement resources according to the CSI measurement configuration information;

[0359] The radio frequency unit 901 is configured to send the target CSI information to the network side device;

[0360] The target CSI information includes at least one of the following:

[0361] Doppler frequency offset, Doppler spread, Doppler spectrum, time domain channel correlation matrix, delay spread, average delay, delay spectrum, and frequency domain channel correlation matrix.

[0362] Optionally, the target CSI measurement resources include:

[0363] Channel state information reference signal (CSI-RS) resources; or

[0364] Tracking reference signal (TRS) resources; or

[0365] Reference signal resource combination.

[0366] Optionally, the reference signal resource combination includes a combination of CSI-RS resources and TRS resources, the CSI measurement configuration information includes CSI-RS resource indication information and TRS resource indication information, and

[0367] First resource relationship indication information for indicating an association relationship between the CSI-RS resources and the TRS resources.

[0368] Optionally, when the target CSI measurement resources include at least two CSI-RS resources, the CSI measurement configuration information includes at least one of the following CSI-RS resource indication information:

[0369] First CSI-RS resource indication information for indicating a number of configured CSI-RS resources;

[0370] Second CSI-RS resource indication information for indicating an index of the CSI-RS resources;

[0371] a third CSI-RS resource indication information, used for indicating a port number of a CSI-RS resource;

[0372] a fourth CSI-RS resource indication information, used for indicating a time domain interval between CSI-RS resources;

[0373] a fifth CSI-RS resource indication information, used for indicating a bandwidth of a CSI-RS resource;

[0374] a sixth CSI-RS resource indication information, used for indicating a frequency domain density of a CSI-RS resource.

[0375] Optionally, when the target CSI measurement resource includes a first CSI-RS resource, the CSI measurement configuration information includes:

[0376] a seventh CSI-RS resource indication information, used for indicating a time domain repetition number of the configured first CSI-RS resource.

[0377] Optionally, when the target CSI measurement resource includes a TRS resource, the CSI measurement configuration information includes at least one of the following TRS resource indication information:

[0378] a first TRS resource indication information, used for indicating a number of configured TRS resource sets;

[0379] a second TRS resource indication information, used for indicating an index of a TRS resource set;

[0380] a third TRS resource indication information, used for indicating a number of measurement resources in a TRS resource set;

[0381] a fourth TRS resource indication information, used for indicating an index of a measurement resource in a TRS resource set;

[0382] a fifth TRS resource indication information, used for indicating a number of measurement resources in each slot in a TRS resource set, respectively;

[0383] a sixth TRS resource indication information, used for indicating a time domain repetition number of a TRS resource set;

[0384] a seventh TRS resource indication information, used for indicating a measurement granularity of a TRS resource set.

[0385] Optionally, before the radio frequency unit 901 performs the sending, to the network side device, of the target CSI information, the radio frequency unit 901 is further used for receiving, from the network side device, a CSI report configuration associated with the CSI measurement configuration information;

[0386] The sending, performed by the radio frequency unit 901, of the target CSI information to the network side device includes:

[0387] The radio frequency unit 901 transmits the target CSI information to the network side device according to the CSI report configuration.

[0388] Optionally, the target CSI measurement resource is also used to measure first CSI information, and the first CSI information includes at least one of the following:

[0389] Beam information, a precoding matrix indication (PMI), a CSI-RS resource indication (CRI), channel quality indication (CQI), rank indication (RI), layer indication (LI), reference signal received power (RSRP), and signal to interference plus noise ratio (SINR).

[0390] Optionally, the processor 910 performs the measurement of the target CSI information by using the target CSI measurement resource according to the CSI measurement configuration information, and the measurement includes the following steps.

[0391] In the case where the target CSI resource is at least two CSI-RS resources, a part of the CSI-RS resources is used to measure the target CSI information, and another part of the CSI-RS resources is used to measure the first CSI information.

[0392] In the case where the target CSI resource is a first CSI-RS resource with at least two time domain repetitions, a part of the CSI-RS resources corresponding to a part of the time domain repetitions of the first CSI-RS resource is used to measure the target CSI information, and another part of the CSI-RS resources corresponding to another part of the time domain repetitions of the first CSI-RS resource is used to measure the first CSI information.

[0393] In the case where the target CSI resource is a combination of a CSI-RS resource and a TRS resource, the TRS resource is used to measure the target CSI information, and the CSI-RS resource is used to measure the first CSI information.

[0394] The terminal 900 provided by the embodiment of the present application can perform the method as shown in Figure 5 The terminal performs each step in the method embodiment, and the same beneficial effects can be achieved. To avoid repetition, details are not described here.

[0395] The embodiment of the present application also provides a network side device, which includes a processor and a communication interface. The communication interface is used to send CSI measurement configuration information to a terminal, and the CSI measurement configuration information is used to configure a target CSI measurement resource associated with target CSI information. The communication interface is also used to receive the target CSI information from the terminal, and the target CSI information includes at least one of the following:

[0396] Doppler frequency offset, Doppler spread, Doppler spectrum, time-domain channel correlation matrix, delay spread, average delay, delay spectrum, and frequency-domain channel correlation matrix.

[0397] The network-side device embodiment corresponds to the network-side device method embodiment described above. Each implementation process and implementation manner of the method embodiment described above can be applied to the network-side device embodiment and achieve the same technical effects.

[0398] Specifically, the embodiment of the present application further provides a network-side device. As shown in Figure 10 The network device 1000 includes an antenna 1001, a radio frequency device 1002, and a baseband device 1003. The antenna 1001 is connected to the radio frequency device 1002. In the uplink direction, the radio frequency device 1002 receives information through the antenna 1001 and sends the received information to the baseband device 1003 for processing. In the downlink direction, the baseband device 1003 processes the information to be sent and sends it to the radio frequency device 1002. The radio frequency device 1002 processes the received information and sends it out through the antenna 1001.

[0399] The frequency band processing device described above can be located in the baseband device 1003. The method performed by the network-side device in the above embodiment can be implemented in the baseband device 1003, which includes a processor 1004 and a memory 1005.

[0400] The baseband device 1003 may, for example, include at least one baseband board on which a plurality of chips are arranged, as shown in Figure 10 For example, one of the chips is a processor 1004 connected to the memory 1005 to call the program in the memory 1005 and perform the network device operations shown in the above method embodiment.

[0401] The baseband device 1003 can also include a network interface 1006 for interacting with the radio frequency device 1002. For example, the interface is a common public radio interface (CPRI).

[0402] Specifically, the network-side device of the embodiment of the present application further includes instructions or programs stored in the memory 1005 and executable on the processor 1004. The processor 1004 calls the instructions or programs in the memory 1005 to perform the methods shown in Figure 2 each module and achieve the same technical effects. To avoid repetition, they will not be described here.

[0403] The embodiment of the present application further provides a readable storage medium having a program or instructions stored thereon. When the program or instructions are executed by a processor, the method shown in Figure 2 orFigure 5 The various processes of the method embodiments are described in detail above, and the same technical effects can be achieved, so no further description is given here.

[0404] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, etc.

[0405] The chip provided in the embodiments of the present application includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used to run programs or instructions to realize the method as Figure 2 Or Figure 5 The various processes of the method embodiments are described in detail above, and the same technical effects can be achieved, so no further description is given here.

[0406] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0407] The embodiments of the present application also provide a computer program / program product, which is stored in a non-transitory storage medium, and the program / program product is executed by at least one processor to realize the method as Figure 2 Or Figure 5 The steps of the method are described in detail above, and the same technical effects can be achieved, so no further description is given here.

[0408] It should be noted that in this document, the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article or device that includes the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to the order of performing the functions as shown or discussed, but can also include performing the functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from the described order, and various steps can be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0409] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned example methods can be realized by means of software and a necessary general hardware platform, and of course, can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a computer software product in essence or in the form of a part that contributes to the prior art, which is stored in a storage medium (such as a ROM / RAM, a magnetic disc, an optical disc), and includes a plurality of instructions for causing a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in various embodiments of the present application.

[0410] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative and not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

1. A method for measuring Channel State Information (CSI), characterized in that, include: The network-side device sends CSI measurement configuration information to the terminal. The CSI measurement configuration information is used to configure the target CSI measurement resources associated with the target CSI information. The network-side device receives the target CSI information from the terminal; The target CSI information includes at least one of the following: Doppler spectrum, time-domain channel correlation matrix, time-delay spectrum, and frequency-domain channel correlation matrix; The target CSI measurement resources include: Tracking reference signal TRS resources; or The combination of Channel State Information Reference Signal (CSI-RS) resources and TRS resources.

2. The method according to claim 1, characterized in that, The target CSI measurement resources include a combination of CSI-RS resources and TRS resources, and the CSI measurement configuration information includes CSI-RS resource indication information and TRS resource indication information, as well as... First resource relationship indication information is used to indicate the association between the CSI-RS resource and the TRS resource.

3. The method according to claim 1 or 2, characterized in that, When the target CSI measurement resource includes at least two CSI-RS resources, the CSI measurement configuration information includes at least one of the following CSI-RS resource indication information: The first CSI-RS resource indication information is used to indicate the number of configured CSI-RS resources; The second CSI-RS resource indication information is used to indicate the index of the CSI-RS resource; The third CSI-RS resource indication information is used to indicate the number of ports of the CSI-RS resource; The fourth CSI-RS resource indication information is used to indicate the time-domain interval between CSI-RS resources; The fifth CSI-RS resource indication information is used to indicate the bandwidth of CSI-RS resources; The sixth CSI-RS resource indication information is used to indicate the frequency domain density of CSI-RS resources.

4. The method according to claim 1 or 2, characterized in that, When the target CSI measurement resource includes a first CSI-RS resource, the CSI measurement configuration information includes: The seventh CSI-RS resource indication information is used to indicate the time-domain repetition number of the first CSI-RS resource.

5. The method according to claim 1 or 2, characterized in that, When the target CSI measurement resource includes a TRS resource, the CSI measurement configuration information includes at least one of the following TRS resource indication information: The first TRS resource indication information is used to indicate the number of configured TRS resource sets; The second TRS resource indication information is used to indicate the index of the TRS resource set; The third TRS resource indication information is used to indicate the number of measurement resources in the TRS resource cluster; The fourth TRS resource indication information is used to indicate the index of the resources measured in the TRS resource set; The fifth TRS resource indication information is used to indicate the number of measurement resources in each time slot of the TRS resource set; The sixth TRS resource indication information is used to indicate the time-domain repetition number of the TRS resource set; The seventh TRS resource indication information is used to indicate the measurement granularity of the TRS resource set.

6. The method according to claim 3, characterized in that, The CSI measurement configuration information also includes: The eighth CSI-RS resource indication information is used to indicate the number of time-domain repetitions of the configured at least two CSI-RS resources, wherein the time-domain symbol positions occupied by the at least two CSI-RS resources in the same time-domain repetition are in the same time slot.

7. The method according to claim 6, characterized in that, The CSI measurement configuration information also includes: The ninth CSI-RS resource indication information is used to indicate the time slot interval between time-domain repetitions of the configured at least two CSI-RS resources.

8. The method according to claim 4, characterized in that, The temporal repetition of the first CSI-RS resource occurs within one time slot or within N time slots, where N is equal to the number of temporal repetitions of the first CSI-RS resource.

9. The method according to claim 8, characterized in that, If the time-domain repetition of the first CSI-RS resource occurs within a time slot, the CSI measurement configuration information further includes at least one of the following: The tenth CSI-RS resource indication information is used to indicate that the configured first CSI-RS resource performs the time-domain repetition that occurs in one time slot within L time slots, where L is an integer greater than or equal to 1; The eleventh CSI-RS resource indication information is used to indicate the symbol interval between time-domain repetitions of the configured first CSI-RS resource.

10. The method according to claim 3, characterized in that, The method further includes: The network-side device sends a first resource indication information to the terminal, the first resource indication information being used to indicate that some of the at least two CSI-RS resources are active or inactive.

11. The method according to claim 3, characterized in that, When the at least two CSI-RS resources include at least two time-domain CSI-RS resources, the method further includes at least one of the following: Activate and / or deactivate semi-persistent CSI-RS resources via the Media Access Control Unit (MAC CE); Downlink control information (DCI) indicates that aperiodic CSI-RS resources are in effect; The time-domain types include: periodic CSI-RS resources, aperiodic CSI-RS resources, and semi-persistent CSI-RS resources.

12. The method according to claim 3, characterized in that, The number of ports of the target CSI-RS resource in the at least two CSI-RS resources is X, and the number of ports of the other CSI-RS resources in the at least two CSI-RS resources besides the target CSI-RS resource is Y, where Y is equal to 1 or 2, and X is greater than or equal to Y.

13. The method according to claim 3, characterized in that, The number of ports and / or occupied bandwidth and / or frequency domain density of the at least two CSI-RS resources are different.

14. The method according to claim 4, characterized in that, The number of ports and / or occupied bandwidth and / or frequency domain density of the first CSI-RS resource are different for at least two time-domain repetitions.

15. The method according to claim 13 or 14, characterized in that, The frequency domain density includes at least one of the resource block (RB) occupancy density and the subband occupancy density.

16. The method according to claim 2, characterized in that, The first resource relationship indication information includes at least one of the following: The first sub-indication information is used to indicate the explicit binding relationship between CSI-RS resources and TRS resource sets; The second sub-indication information is used to indicate the quasi-co-addressable QCL reference relationship between CSI-RS resources and TRS resource sets.

17. The method according to claim 12, characterized in that, The target CSI measurement resource is also used to measure first CSI information, which includes at least one of the following: Beam information, precoding matrix indicator (PMI), CSI-RS resource indicator (CRI), channel quality indicator (CQI), rank indicator (RI), layer indicator (LI), reference signal received power (RSRP), and signal-to-interference-plus-noise ratio (SINR).

18. The method according to claim 17, characterized in that, When the target CSI measurement resource is at least two CSI-RS resources, a portion of the at least two CSI-RS resources is used to measure the target CSI information, and another portion of the at least two CSI-RS resources is used to measure the first CSI information; When the target CSI measurement resource is a first CSI-RS resource that is repeated at least twice in the time domain, a portion of the time domain repetitions of the first CSI-RS resource are used to measure the target CSI information, and another portion of the time domain repetitions of the first CSI-RS resource are used to measure the first CSI information. When the target CSI measurement resource is a combination of a TRS resource set and a CSI-RS resource, the TRS resource set is used to measure the target CSI information, and the CSI-RS resource is used to measure the first CSI information.

19. The method according to claim 1, characterized in that, Before the network-side device receives the target CSI information from the terminal, the method further includes: The network-side device sends a CSI report configuration associated with the CSI measurement configuration information to the terminal. The CSI report configuration is used to configure the terminal to report the target CSI information.

20. The method according to claim 1, characterized in that, After the network-side device receives the target CSI information from the terminal, the method further includes: The network-side device predicts the channel state change corresponding to the terminal based on the target CSI information.

21. A Channel State Information (CSI) measurement device, characterized in that, Applied to network-side devices, the device includes: The first sending module is used to send CSI measurement configuration information to the terminal, wherein the CSI measurement configuration information is used to configure the target CSI measurement resources associated with the target CSI information. A first receiving module is configured to receive the target CSI information from the terminal; The target CSI information includes at least one of the following: Doppler spectrum, time-domain channel correlation matrix, time-delay spectrum, and frequency-domain channel correlation matrix; The target CSI measurement resources include: Tracking reference signal TRS resources; or The combination of Channel State Information Reference Signal (CSI-RS) resources and TRS resources.

22. The apparatus according to claim 21, characterized in that, The target CSI measurement resources include a combination of CSI-RS resources and TRS resources, and the CSI measurement configuration information includes CSI-RS resource indication information and TRS resource indication information, as well as... First resource relationship indication information is used to indicate the association between the CSI-RS resource and the TRS resource.

23. The apparatus according to claim 21 or 22, characterized in that, When the target CSI measurement resource includes at least two CSI-RS resources, the CSI measurement configuration information includes at least one of the following CSI-RS resource indication information: The first CSI-RS resource indication information is used to indicate the number of configured CSI-RS resources; The second CSI-RS resource indication information is used to indicate the index of the CSI-RS resource; The third CSI-RS resource indication information is used to indicate the number of ports of the CSI-RS resource; The fourth CSI-RS resource indication information is used to indicate the time-domain interval between CSI-RS resources; The fifth CSI-RS resource indication information is used to indicate the bandwidth of CSI-RS resources; The sixth CSI-RS resource indication information is used to indicate the frequency domain density of CSI-RS resources.

24. The apparatus according to claim 21 or 22, characterized in that, When the target CSI measurement resource includes a first CSI-RS resource, the CSI measurement configuration information includes: The seventh CSI-RS resource indication information is used to indicate the time-domain repetition number of the configured first CSI-RS resource.

25. The apparatus according to claim 21 or 22, characterized in that, When the target CSI measurement resource includes a TRS resource, the CSI measurement configuration information includes at least one of the following TRS resource indication information: The first TRS resource indication information is used to indicate the number of configured TRS resource sets; The second TRS resource indication information is used to indicate the index of the TRS resource set; The third TRS resource indication information is used to indicate the number of measurement resources in the TRS resource cluster; The fourth TRS resource indication information is used to indicate the index of the resources measured in the TRS resource set; The fifth TRS resource indication information is used to indicate the number of measurement resources in each time slot of the TRS resource set; The sixth TRS resource indication information is used to indicate the time-domain repetition number of the TRS resource set; The seventh TRS resource indication information is used to indicate the measurement granularity of the TRS resource set.

26. The apparatus according to claim 23, characterized in that, Also includes: The second sending module is used to send first resource indication information to the terminal, the first resource indication information being used to indicate that some of the at least two CSI-RS resources are active or inactive.

27. A method for measuring Channel State Information (CSI), characterized in that, include: The terminal receives CSI measurement configuration information from the network-side device; The terminal measures and obtains target CSI information using target CSI measurement resources based on the CSI measurement configuration information. The terminal sends the target CSI information to the network-side device; The target CSI information includes at least one of the following: Doppler spectrum, time-domain channel correlation matrix, time-delay spectrum, and frequency-domain channel correlation matrix; The target CSI measurement resources include: Tracking reference signal TRS resources; or The combination of Channel State Information Reference Signal (CSI-RS) resources and TRS resources.

28. The method according to claim 27, characterized in that, The target CSI measurement resource is a combination of CSI-RS resources and TRS resources. The CSI measurement configuration information includes CSI-RS resource indication information and TRS resource indication information, and... First resource relationship indication information is used to indicate the association between the CSI-RS resource and the TRS resource.

29. The method according to claim 27 or 28, characterized in that, When the target CSI measurement resource includes at least two CSI-RS resources, the CSI measurement configuration information includes at least one of the following CSI-RS resource indication information: The first CSI-RS resource indication information is used to indicate the number of configured CSI-RS resources; The second CSI-RS resource indication information is used to indicate the index of the CSI-RS resource; The third CSI-RS resource indication information is used to indicate the number of ports of the CSI-RS resource; The fourth CSI-RS resource indication information is used to indicate the time-domain interval between CSI-RS resources; The fifth CSI-RS resource indication information is used to indicate the bandwidth of CSI-RS resources; The sixth CSI-RS resource indication information is used to indicate the frequency domain density of CSI-RS resources.

30. The method according to claim 27 or 28, characterized in that, When the target CSI measurement resource includes a first CSI-RS resource, the CSI measurement configuration information includes: The seventh CSI-RS resource indication information is used to indicate the time-domain repetition number of the configured first CSI-RS resource.

31. The method according to claim 27 or 28, characterized in that, When the target CSI measurement resource includes a TRS resource, the CSI measurement configuration information includes at least one of the following TRS resource indication information: The first TRS resource indication information is used to indicate the number of configured TRS resource sets; The second TRS resource indication information is used to indicate the index of the TRS resource set; The third TRS resource indication information is used to indicate the number of measurement resources in the TRS resource cluster; The fourth TRS resource indication information is used to indicate the index of the resources measured in the TRS resource set; The fifth TRS resource indication information is used to indicate the number of measurement resources in each time slot of the TRS resource set; The sixth TRS resource indication information is used to indicate the time-domain repetition number of the TRS resource set; The seventh TRS resource indication information is used to indicate the measurement granularity of the TRS resource set.

32. The method according to claim 27, characterized in that, Before the terminal sends the target CSI information to the network-side device, the method further includes: The terminal receives CSI report configuration associated with the CSI measurement configuration information from the network-side device; The terminal sends the target CSI information to the network-side device, including: The terminal sends the target CSI information to the network-side device according to the CSI report configuration.

33. The method according to claim 27 or 28, characterized in that, The target CSI measurement resource is also used to measure first CSI information, which includes at least one of the following: Beam information, precoding matrix indicator (PMI), CSI-RS resource indicator (CRI), channel quality indicator (CQI), rank indicator (RI), layer indicator (LI), reference signal received power (RSRP), and signal-to-interference-plus-noise ratio (SINR).

34. The method according to claim 33, characterized in that, The terminal measures target CSI information using target CSI measurement resources based on the CSI measurement configuration information, including: When the target CSI measurement resource is at least two CSI-RS resources, the terminal uses a portion of the CSI-RS resources to measure the target CSI information and uses another portion of the CSI-RS resources to measure the first CSI information; When the target CSI measurement resource is a first CSI-RS resource that undergoes at least two time-domain repetitions, the terminal uses a portion of the CSI-RS resource corresponding to a portion of the time-domain repetitions of the first CSI-RS resource to measure the target CSI information, and uses another portion of the CSI-RS resource corresponding to a portion of the time-domain repetitions of the first CSI-RS resource to measure the first CSI information. When the target CSI measurement resource is a combination of CSI-RS resources and TRS resources, the terminal uses the TRS resources to measure the target CSI information and uses the CSI-RS resources to measure the first CSI information.

35. A Channel State Information (CSI) measurement device, characterized in that, Applied to a terminal, the device includes: The second receiving module is used to receive CSI measurement configuration information from the network-side device; The measurement module is used to measure target CSI information using target CSI measurement resources based on the CSI measurement configuration information. The fourth sending module is used to send the target CSI information to the network-side device; The target CSI information includes at least one of the following: Doppler spectrum, time-domain channel correlation matrix, time-delay spectrum, and frequency-domain channel correlation matrix; The target CSI measurement resources include: Tracking reference signal TRS resources; or The combination of Channel State Information Reference Signal (CSI-RS) resources and TRS resources.

36. The apparatus according to claim 35, characterized in that, The target CSI measurement resource is a combination of CSI-RS resources and TRS resources. The CSI measurement configuration information includes CSI-RS resource indication information and TRS resource indication information, and... First resource relationship indication information is used to indicate the association between the CSI-RS resource and the TRS resource.

37. The apparatus according to claim 35 or 36, characterized in that, When the target CSI measurement resource is a CSI-RS resource, the CSI measurement configuration information includes at least one of the following CSI-RS resource indication information: The first CSI-RS resource indication information is used to indicate the number of configured CSI-RS resources; The second CSI-RS resource indication information is used to indicate the index of the CSI-RS resource; The third CSI-RS resource indication information is used to indicate the number of ports of the CSI-RS resource; The fourth CSI-RS resource indication information is used to indicate the time-domain interval between CSI-RS resources; The fifth CSI-RS resource indication information is used to indicate the bandwidth of CSI-RS resources; The sixth CSI-RS resource indication information is used to indicate the frequency domain density of CSI-RS resources.

38. The apparatus according to claim 35 or 36, characterized in that, When the target CSI measurement resource is a CSI-RS resource, the CSI measurement configuration information includes: The seventh CSI-RS resource indication information is used to indicate the time-domain repetition number of the configured CSI-RS resource.

39. The apparatus according to claim 35 or 36, characterized in that, When the target CSI measurement resource includes a TRS resource, the CSI measurement configuration information includes at least one of the following TRS resource indication information: The first TRS resource indication information is used to indicate the number of configured TRS resource sets; The second TRS resource indication information is used to indicate the index of the TRS resource set; The third TRS resource indication information is used to indicate the number of measurement resources in the TRS resource cluster; The fourth TRS resource indication information is used to indicate the index of the resources measured in the TRS resource set; The fifth TRS resource indication information is used to indicate the number of measurement resources in each time slot of the TRS resource set; The sixth TRS resource indication information is used to indicate the time-domain repetition number of the TRS resource set; The seventh TRS resource indication information is used to indicate the measurement granularity of the TRS resource set.

40. A network-side device, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the channel state information (CSI) measurement method as described in any one of claims 1 to 20.

41. A terminal, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the channel state information (CSI) measurement method as described in any one of claims 27 to 34.

42. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the Channel State Information (CSI) measurement method as described in any one of claims 1 to 20, or implement the steps of the CSI measurement method as described in any one of claims 27 to 34.

Images