Resource indication method and apparatus, terminal, and network side device

Abstract

The present application relates to the field of communications, and discloses a resource indication method and apparatus, a terminal, and a network side device. The resource indication method in embodiments of the present application comprises: a terminal receives first information from a network side device, wherein the first information is used for indicating a first resource, and the first resource is used by the terminal to acquire channel state information. In the present embodiments, on the basis of first information, a network side device can flexibly indicate a resource for a terminal to acquire channel state information, thereby improving the diversity and flexibility of the channel state information.

Description

Resource indication method, apparatus, terminal and network side device

[0001] Cross-reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202410478571.X filed on April 19, 2024 in China, the contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of communication, and more particularly, to a resource indication method, apparatus, terminal and network side device. BACKGROUND

[0004] New Radio (NR) Demodulation Reference Signal (DMRS) is mainly used for channel estimation and data demodulation in the NR system. Through channel estimation, the receiving end can obtain channel state information, and then use the channel state information for data demodulation.

[0005] However, since the original intention of the design of the NR DMRS is to serve data demodulation, in order to adapt to the needs of data demodulation, the resource position of the NR DMRS is usually relatively fixed and scattered, which to some extent reduces the diversity and flexibility of the channel state information. Especially in the application of Artificial Intelligence (AI) model training. Since the resource position of the NR DMRS is usually relatively fixed and scattered, the channel state information obtained through the NR DMRS may not meet the needs of the diversity and flexibility of the channel state information for AI model training, thereby affecting the training effect and performance of the AI model. SUMMARY

[0006] Embodiments of the present application provide a resource indication method, apparatus, terminal and network side device, which can improve the diversity and flexibility of the channel state information.

[0007] In a first aspect, a resource indication method is provided, comprising:

[0008] The terminal receives first information from the network side device;

[0009] The first information is used to indicate a first resource, and the first resource is used by the terminal to obtain channel state information.

[0010] In a second aspect, a resource indication method is provided, comprising:

[0011] The network side device sends first information to the terminal;

[0012] The first information is used for indicating a first resource, and the first resource is used for the terminal to acquire channel state information.

[0013] In a third aspect, a resource indication apparatus is provided, comprising:

[0014] a receiving unit configured to receive first information from a network side device;

[0015] The first information is used for indicating a first resource, and the first resource is used for the terminal to acquire channel state information.

[0016] In a fourth aspect, a resource indication apparatus is provided, comprising:

[0017] a sending unit configured to send first information to a terminal;

[0018] The first information is used for indicating a first resource, and the first resource is used for the terminal to acquire channel state information.

[0019] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores programs or instructions executable on the processor, and the programs or instructions are executed by the processor to implement the steps of the method according to the first aspect.

[0020] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is configured to receive first information from a network side device;

[0021] The first information is used for indicating a first resource, and the first resource is used for the terminal to acquire channel state information.

[0022] In a seventh aspect, a network side device is provided, comprising a processor and a memory, wherein the memory stores programs or instructions executable on the processor, and the programs or instructions are executed by the processor to implement the steps of the method according to the second aspect.

[0023] In an eighth aspect, a network side device is provided, comprising a processor and a communication interface, wherein the communication interface is configured to send first information to a terminal;

[0024] The first information is used for indicating a first resource, and the first resource is used for the terminal to acquire channel state information.

[0025] In a ninth aspect, a readable storage medium is provided, wherein the readable storage medium stores programs or instructions, and the programs or instructions are executed by a processor to implement the steps of the method according to the first aspect, or to implement the steps of the method according to the second aspect.

[0026] In a tenth aspect, a wireless communication system is provided, comprising: a terminal configured to perform the steps of the method according to the first aspect, and a network-side device configured to perform the steps of the method according to the second aspect.

[0027] In an eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to run programs or instructions to implement the steps of the method according to the first aspect or the steps of the method according to the second aspect.

[0028] In a twelfth aspect, a computer program / program product is provided, which is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the method according to the first aspect.

[0029] In the embodiments of the present application, the terminal receives first information from the network-side device, wherein the first information is used to indicate a first resource, and the first resource is used for the terminal to acquire channel state information. In other words, the network-side device can flexibly indicate the resource used for the terminal to acquire channel state information through the first information, thereby improving the diversity and flexibility of the channel state information. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the description of the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0031] FIG. 1 is an example of a communication system suitable for the embodiments of the present application.

[0032] FIG. 2 is an example of a structure of a neural network according to the embodiments of the present application.

[0033] FIG. 3 is an example of a structure of a neuron according to the embodiments of the present application.

[0034] FIG. 4 is an example of a DMRS configuration type 1 according to the embodiments of the present application.

[0035] FIG. 5 is an example of a DMRS configuration type 2 according to the embodiments of the present application.

[0036] FIG. 6 is a schematic flowchart of a resource indication method according to the embodiments of the present application.

[0037] FIGS. 7 to 10 are examples of position indication of the first resource according to the embodiments of the present application.

[0038] FIG. 11 and FIG. 12 are examples of the first configuration type provided by the embodiments of the present application.

[0039] FIG. 13 and FIG. 14 are examples of the second configuration type provided by the embodiments of the present application.

[0040] FIG. 15 to FIG. 17 are examples of the third configuration type provided by the embodiments of the present application.

[0041] FIG. 18 to FIG. 23 are examples of the location of the reference signal resource set provided by the embodiments of the present application.

[0042] FIG. 24 and FIG. 25 are examples of the location indication of the reference signal resource set provided by the embodiments of the present application.

[0043] FIG. 26 is an example of the input and output of the AI model provided by the embodiments of the present application.

[0044] FIG. 27 is a schematic block diagram of a resource indication apparatus provided by the embodiments of the present application.

[0045] FIG. 28 is a schematic block diagram of another resource indication apparatus provided by the embodiments of the present application.

[0046] FIG. 29 is a schematic block diagram of a communication device provided by the embodiments of the present application.

[0047] FIG. 30 is a schematic diagram of the hardware structure of a terminal provided by the embodiments of the present application.

[0048] FIG. 31 is a schematic block diagram of a network side device provided by the embodiments of the present application. DETAILED DESCRIPTION

[0049] 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 of the embodiments of the present application, rather than all 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 belong to the scope of protection of the present application.

[0050] The terms "first", "second", and the like in the specification and claims of this application are used as identifiers for convenience and are not intended to convey an importance or a chronological sequence among or between the identified objects. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of this application are capable of functioning in other sequences than those described herein. The terms "first", "second", and the like are used to distinguish between similar objects, and are not used to describe a particular order or sequence. It is to be understood that such terms so used are interchangeable under appropriate circumstances and that the embodiments of this application are capable of functioning in other sequences than those described herein, and that the terms "first", "second", etc. are used to distinguish between similar objects, and are not used to describe a particular order or sequence, for example, unless otherwise specified. Furthermore, the term "or" as used in this application is to be interpreted as inclusive, i.e., the term "A or B" covers all possibilities, i.e., A, B, or both A and B. The character " / " is generally used to represent an "or" relationship between the associated objects.

[0051] The term "indicate" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). The direct indication can be understood as that the sender explicitly informs the receiver of specific information, operations to be performed or requested results, etc. in the sent indication. The indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or judges and determines the operations to be performed or the requested results according to the judgment result.

[0052] It is worth noting that the techniques described in the embodiments of this application are 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) or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described techniques 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 techniques can also be applied to systems other than NR systems, such as 6 tha 6th Generation, 6G) communication system.

[0053] FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application can be applied.

[0054] As shown in FIG. 1, 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, a Laptop Computer, a notebook computer, a Personal Digital Assistant (PDA), a palmtop computer, a netbook, an Ultra-mobile Personal Computer (UMPC), a Mobile Internet Device (MID), an Augmented Reality (AR) device, a Virtual Reality (VR) device, a robot, a wearable device, a flight vehicle, a Vehicle User Equipment (VUE), a shipboard device, a Pedestrian User Equipment (PUE), a smart home (a home device with a wireless communication function such as a refrigerator, a television, a washing machine, or furniture, etc.), a game console, a Personal Computer (PC), a kiosk, or a self-service machine, etc. 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, etc.), a smart wristband, smart clothing, etc. The vehicle-mounted device can also be referred to as a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application.

[0055] The network-side device 12 can include an access network device.

[0056] The access network device can also be referred to as a radio access network (RAN) device, a radio access network function or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP) or a wireless fidelity (WiFi) node, etc. Among them, the base station can be referred to as a node B (NB), an evolved node B (eNB), a next generation node B (gNB), a new radio node B (NR node B), an access point, a relay base station (RBS), a serving base station (SBS), a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home node B (HNB), a home evolved node B, a transmission reception point (TRP), or some other appropriate term in the art, as long as the same technical effect is achieved. The base station is not limited to a specific technical term, and it should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0057] In order to better understand the embodiments of the present application, the related technologies of the present application are described.

[0058] (1) Artificial intelligence.

[0059] Artificial intelligence (AI) has been widely applied in various fields. Integrating artificial intelligence into wireless communication networks significantly improves technical indicators such as throughput, latency, and user capacity, which is an important task for future wireless communication networks. AI modules have various implementation methods, such as neural networks, decision trees, support vector machines, and Bayesian classifiers. The present application takes neural networks as an example for illustration, but does not limit the specific type of AI module.

[0060] FIG. 2 is an example of a structure of a neural network according to an embodiment of the present application.

[0061] As shown in FIG. 2, the structure of the neural network includes an input layer, a hidden layer (also referred to as a hidden layer), and an output layer, the input of the input layer is X1-X n , and the output of the output layer is Y. It should be understood that the present application takes the neural network as an example for illustration, but does not limit the specific type of the AI module.

[0062] FIG. 3 is an example of a structure of a neuron according to an embodiment of the present application.

[0063] As shown in FIG. 3, the neural network is composed of neurons. The output of the neuron is z, z = a1w1+…+a k w k +…+a K w K . Wherein a1-a K is the input, w1-w K is the weight (multiplicative coefficient), b is the bias (additive coefficient), and σ(.) is the activation function. The activation function includes the Sigmoid function, the tanh function, the Rectified Linear Unit (ReLU) (also referred to as the linear rectification function), etc.

[0064] The parameters of the neural network are optimized by an optimization algorithm. The optimization algorithm is a kind of algorithm that can minimize or maximize the objective function (sometimes also called the loss function). And the objective function is often a mathematical combination of model parameters and data. For example, given data X and its corresponding label Y, a neural network model f(.) is constructed. After having the model, the predicted output f(x) can be obtained according to the input x, and the gap between the predicted value and the true value (f(x)-Y) can be calculated, which is the loss function. The purpose is to find the appropriate W, b to make the value of the above loss function reach the minimum, and the smaller the loss value is, the closer the AI model is to the true situation.

[0065] The optimization algorithm is usually based on the error back propagation (BP) algorithm. The basic idea of the BP algorithm is that the learning process consists of two processes of forward propagation of signals and backward propagation of errors. During forward propagation, the input sample is transmitted from the input layer to the output layer through the processing of each hidden layer. If the actual output of the output layer does not match the expected output, the backward propagation of errors is entered. The error back propagation is to transmit the output error to the input layer through the hidden layer in a certain form, and distribute the error to all units of each layer, so as to obtain the error signal of each unit, which is used as the basis for correcting the weight of each unit. The weight adjustment process of each layer is repeated. The process of continuously adjusting the weight is the learning and training process of the network. This process continues until the error of the network output is reduced to an acceptable level, or the learning time reaches the preset learning time.

[0066] The optimization algorithm can be gradient descent, stochastic gradient descent (SGD), mini-batch gradient descent, momentum method, momentum-based stochastic gradient descent algorithm (such as Nesterov), adaptive gradient descent (Adagrad), adaptive learning rate optimization algorithm based on gradient descent (Adadelta), root mean square prop (RMSprop), adaptive moment estimation (Adam), etc.

[0067] When the error back propagation is performed, these optimization algorithms obtain the error / loss from the loss function, derive the current neuron, add the learning rate, the previous gradient / derivative / partial derivative, etc., obtain the gradient, and transmit the gradient to the previous layer.

[0068] According to different types of solutions, the selected AI algorithm and the adopted AI model also have differences.

[0069] Generally, the main method of improving the performance of the 5G network by means of AI is to enhance or replace the existing algorithm or processing module by means of the neural network-based algorithm and AI model. In a specific scenario, the neural network-based algorithm and AI model can achieve better performance than the deterministic algorithm. The neural network includes a deep neural network, a convolutional neural network, a recurrent neural network, etc. By means of the existing AI tool, the construction, training and verification of the neural network can be realized.

[0070] Replacing the modules in the existing system with AI / machine learning (ML) methods can effectively improve the performance of the system.

[0071] It should be noted that the AI model in the embodiments of the present application can also be referred to as an AI unit, an ML (machine learning) model, an ML unit, an AI structure, an AI feature, a machine learning model, a neural network, a neural network function, a neural network function, etc. Alternatively, the AI model can refer to a processing unit that can implement specific algorithms, formulas, processing flows, capabilities, etc. related to AI, or the AI model can be a processing method, algorithm, function, module or unit for a specific data set, or the AI model can be a processing method, algorithm, function, module or unit running on AI / ML related hardware such as GPU (Graphics Processing Unit), NPU (Neural Processing Unit), TPU (Tensor Processing Unit), ASIC (Application Specific Integrated Circuit), etc. The present application does not make specific limitations. The specific data set can include the input and / or output of the AI unit / AI model.

[0072] Optionally, the identifier of the AI unit / AI model can be an AI model identifier, an AI structure identifier, an AI algorithm identifier, or an identifier of a specific data set associated with the AI unit / AI model, or an identifier of a specific scene, environment, channel feature, device related to the AI / ML, or an identifier of a function, feature, capability or module related to the AI / ML. The present application does not make specific limitations.

[0073] (2) DMRS.

[0074] In the NR system, the DMRS is used for demodulation of the data channel.

[0075] The design of DMRS in NR standard meets different deployment scenarios and use cases: the front-loaded design can reduce processing latency; up to 12 orthogonal antenna ports can effectively support Multiple Input Multiple Output (MIMO) applications; and the transmission duration is from 2 to 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols, up to 4 DMRS instances can be configured in a slot to support high-speed mobile scenarios. Placing DMRS at the front of the transmission, or becoming a front-loaded reference signal, helps the system to obtain lower processing latency. This design allows the receiver to perform channel estimation earlier, and once the receiver obtains the channel estimation, the receiver can immediately perform correlation demodulation on the received data that has been buffered, rather than receiving all the data and then processing it.

[0076] The DMRS of the NR standard adopts a Gold sequence with a length of 2 31 The sequence generation corresponds to all common resource blocks in the frequency domain, but only those resource blocks used for data transmission are transmitted during data transmission. Generating a reference signal sequence for all Resource Blocks (RBs) provides a set of identical sequences when the same time-frequency resources are used by different terminals. In Multiple users-multiple input multiple output (MU-MIMO), the same resource blocks use the same sequence, and different users can superimpose orthogonal sequences on the pseudo-random sequence to maintain user isolation and reduce interference. However, if the underlying pseudo-random sequence (or initial sequence) of each terminal is different, the sequence for the same time-frequency resource block will also be different.

[0077] For the DMRS of the data channel, according to the frequency domain structure of the DMRS, it can be divided into DMRS configuration type 1 and DMRS configuration type 2, and both DMRS configuration types support single-symbol and double-symbol structures. Among them, as shown in (a) of FIG. 4, the single-symbol structure of DMRS configuration type 1 supports up to 4 ports, as shown in (b) of FIG. 4, the double-symbol structure supports up to 8 ports; as shown in (a) of FIG. 5, the single-symbol structure of DMRS configuration type 2 supports up to 6 ports, as shown in (b) of FIG. 5, the double-symbol structure supports up to 12 ports. In addition, DMRS configuration type 1 supports 2 CDM groups, and DMRS configuration type 2 supports 3 CDM groups.

[0078] The NR standard supports two DMRS time-domain structures, the main difference being the position of the first DMRS symbol: mapping type A and mapping type B. Mapping type A: the first DMRS symbol is located in the 2nd or 3rd OFDM symbol within a slot. This mapping method always places the DMRS at the relative edge of the slot regardless of the starting position of the actual data transmission. Mapping type B: the first DMRS symbol is located in the first OFDM symbol of the data allocation. The position of the DMRS is not relative to the starting position of the slot, but relative to the starting position of the data transmission.

[0079] Specifically, the resource mapping method of the DMRS is as follows: k' = 0, 1; n = 0, 1,....

[0080] wherein, represents the mapping to the resource unit (k, l) p,μ , represents the power control parameter of the DMRS used for demodulating the PDSCH, w f (k') represents a Frequency Division Orthogonal Cover Code (FD-OCC) sequence, wherein the length of the FD-OCC sequence is 2, w t (l') represents a Time Division Orthogonal Cover Code (TD-OCC) sequence, wherein the length of the TD-OCC sequence is 2, r(2n+k') represents the 2n+k' position of the DMRS sequence, represents the DMRS frequency domain occupation position identifier, represents the DMRS time domain occupation position identifier, and P represents an antenna port.

[0081] The DMRS related configuration parameters can refer to Table 1 or Table 2.

[0082] Table 1

[0083] Table 2

[0084] (III) Radio Resource Control (RRC) configuration of DMRS.

[0085] The information element (IE) DMRS-DownlinkConfig is used to configure downlink demodulation reference signals for PDSCH.

[0086] The specific content of DMRS-DownlinkConfig can be as follows:

[0087] The descriptions of the fields in DMRS-DownlinkConfig are shown in Table 3.

[0088] Table 3

[0089] In addition, the downlink control information (DCI) more specifically indicates the DMRS ports adopted by different code words for DMRS type and maxLength, and whether single-symbol or double-symbol, DMRS and data multiplexing, etc.

[0090] The resource indication method provided by the embodiments of the present application will be described in detail in combination with some embodiments and application scenarios thereof, with reference to the accompanying drawings.

[0091] FIG. 6 is a schematic flowchart of a resource indication method 200 according to an embodiment of the present application.

[0092] As shown in FIG. 6, the resource indication method 200 can include at least part of the following contents:

[0093] S210, a terminal receives first information from a network side device;

[0094] The first information is used to indicate a first resource, and the first resource is used for the terminal to acquire channel state information.

[0095] Exemplarily, the channel state information is used to train an AI model.

[0096] The AI model can be used to replace traditional signal processing modules, such as channel estimation or filtering, interpolation, equalization, and channel coding and decoding, to obtain a lower block error ratio (BLER) and complexity. In particular, in some special scenarios, the AI model can significantly improve decoding performance.

[0097] Exemplarily, the terminal can report the channel state information to the network side device.

[0098] Exemplarily, the channel state information includes a time domain channel impulse response, a channel frequency response, a pre-coding matrix indicator (PMI), a channel quality indicator (CQI), a rank indication (RI), a signal-to-noise ratio (SNR), a signal to interference plus noise ratio (SINR), a received signal strength indication (RSSI), a reference signal receiving power (RSRP), a reference signal receiving quality (RSRQ), and the like.

[0099] Exemplarily, the channel state information can be ideal channel state information, which can refer to channel state information with a precision higher than a certain threshold, or ideal channel state information can refer to channel state information with a similarity to real channel state information higher than a certain threshold.

[0100] Exemplarily, the channel state information can be information that meets a preset condition, which can include the requirement of AI model training for the diversity and flexibility of channel state information, a precision higher than a certain threshold, or a similarity to real channel state information higher than a certain threshold, and the like.

[0101] In the embodiments of the present application, the terminal receives first information from the network side device; wherein the first information is used to indicate a first resource, and the first resource is used for the terminal to obtain channel state information. Equivalently, the network side device can flexibly indicate the resource used for the terminal to obtain channel state information through the first information, thereby being able to improve the diversity and flexibility of the channel state information.

[0102] In some embodiments, the interference of the first resource is less than or equal to a preset threshold, and the interference of the first resource includes at least one of the following: inter-cell interference, multi-user interference in the same cell, same-frequency interference, and adjacent-frequency interference. Alternatively, the interference of the first resource can include the number of interference sources or the interference power intensity.

[0103] For example, when the interference of the first resource is less than or equal to a preset threshold, the first resource can also be referred to as an almost blank resource, a resource for data collection, or a resource for AI model training, which is not limited in the present application.

[0104] It should be noted that for AI model-based channel estimation or filtering, one of the main difficulties of the AI model is to obtain accurate channel state information. For NR DMRS, the actual field-acquired NR DMRS is often affected by inter-cell interference or inter-user interference. Alternatively, the terminal does not know the size of the interference on the NR DMRS resource, and the terminal cannot guarantee that the channel state information obtained on the NR DMRS resource is free of interference. In the case of interference, the terminal cannot guarantee the accuracy of the obtained channel state information, and inaccurate channel state information for AI model training can affect performance.

[0105] In the present embodiment, in order to support data collection of the AI model, the first resource is designed to have interference less than or equal to a preset threshold. That is, the first resource can be a resource specially configured by the network side device for the terminal to collect ideal channel state information. Alternatively, the terminal can assume that the first resource indicated by the first information has no or little interference (for example, it can be assumed that the network side device selects clean first resources for cooperation with the terminal data collection through inter-cell interference coordination). Thus, when the AI model is trained based on the channel state information obtained from the first resource, the accuracy of the obtained channel state information can be guaranteed, and when the AI model is trained using the channel state information, the training effect and performance of the AI model can be guaranteed.

[0106] In some embodiments, the first information is used to indicate whether the resource for transmitting the first reference signal in the physical downlink shared channel (PDSCH) resource is the first resource.

[0107] For example, the first reference signal can be an NR DMRS or a legacy DMRS. The legacy DMRS can be a Long Term Evolution (LTE) DMRS, etc.

[0108] In some embodiments, the first information is used to indicate whether the resource for transmitting the NR DMRS or the legacy DMRS in the PDSCH resource is the first resource.

[0109] For example, when the interference of the first resource is less than or equal to a preset threshold, the first resource can be referred to as an almost blank resource, and the first information is used to indicate whether the resource for transmitting the NR DMRS or the legacy DMRS in the PDSCH resource is the almost blank resource. Specifically, after receiving the first information, if the first information is used to indicate whether the resource for transmitting the NR DMRS or the legacy DMRS in the PDSCH resource is the almost blank resource, the terminal can assume that the network side device has coordinated the resource for transmitting the NR DMRS or the legacy DMRS to be a resource with interference less than or equal to a preset threshold through inter-cell interference coordination. In this case, the terminal can directly determine the resource for transmitting the NR DMRS or the legacy DMRS in the PDSCH resource as the almost blank resource based on the indication of the first information.

[0110] In some embodiments, the first information is used to indicate the resource position of the first resource, or the first information is used to indicate the resource position of the first resource in the PDSCH resource.

[0111] For example, the first information used to indicate the resource position of the first resource can include at least one of the first information used to indicate the frequency domain resource position of the first resource, the time domain resource position of the first resource.

[0112] For example, the first information used to indicate the resource position of the first resource in the PDSCH resource can include the first information used to indicate the resource position of the first resource in the resource for transmitting the first reference signal in the PDSCH resource, or the first information used to indicate the resource position of the first resource in the resource for transmitting data in the PDSCH resource, or the first information used to indicate the resource position of the first resource in the resource for transmitting the first reference signal and data in the PDSCH resource. The first reference signal can be the NR DMRS or the legacy DMRS.

[0113] In some embodiments, when the first information is used to indicate the resource position of the first resource, the first resource and the PDSCH resource at least partially overlap.

[0114] Exemplarily, the first resource and the PDSCH resource at least partially overlap, including that the first resource and the PDSCH resource at least partially overlap in a frequency domain, or the first resource and the PDSCH resource at least partially overlap in a time domain, or the first resource and the PDSCH resource at least partially overlap in a time domain and a frequency domain.

[0115] It should be noted that, in the case where the first information is used to indicate the resource location of the first resource, the frequency domain length of the first resource and the frequency domain length of the PDSCH resource can be equal or unequal, or the time domain length of the first resource and the time domain length of the PDSCH resource can be equal or unequal, or the first resource and the PDSCH resource can be aligned or not aligned in the frequency domain or the time domain, which is not limited in the present application.

[0116] In some embodiments, the first information includes at least one of the following:

[0117] an indication of a location of the first resource relative to a subcarrier 0 of a common resource block (CRB);

[0118] an indication of a location of the first resource relative to a subcarrier 0 of a first physical resource block (PRB) in the PDSCH resource;

[0119] an indication of a location of the first resource relative to a subcarrier 0 of a first physical resource block (PRB) in the PDSCH resource used for transmitting the first reference signal;

[0120] an indication of a location of the first resource relative to a subcarrier 0 of a first physical resource block (PRB) in the PDSCH resource used for transmitting data;

[0121] an indication of a number of frequency domain resource units occupied by the first resource.

[0122] Exemplarily, the first reference signal can be an NR DMRS or a legacy DMRS. The legacy DMRS can be a Long Term Evolution (LTE) DMRS, etc.

[0123] Exemplarily, the frequency domain unit can be a resource element (RE), a physical resource block (PRB), a subcarrier, a subband, a bandwidth part (BWP), a frequency band, etc.

[0124] Exemplarily, in a case that the first resource is a resource continuous in frequency domain, or in a case that the first resource is continuous in frequency domain, the first information comprises at least one of: an indication of a position of the first resource relative to a subcarrier 0 of a common resource block (CRB); an indication of a position of the first resource relative to a subcarrier 0 of a first physical resource block (PRB) in the PDSCH resource; an indication of a position of the first resource relative to a subcarrier 0 of a first physical resource block (PRB) in the PDSCH resource used for transmitting the first reference signal; an indication of a position of the first resource relative to a subcarrier 0 of a first physical resource block (PRB) in the PDSCH resource used for transmitting data; an indication of a number of frequency domain resource units occupied by the first resource.

[0125] Exemplarily, as shown in FIGs. 7-9, the first information can comprise an indication of a position of the first resource relative to a subcarrier 0 of a first physical resource block (PRB) in the PDSCH resource (i.e., F1) and an indication of a number of frequency domain resource units occupied by the first resource (i.e., L2).

[0126] In some embodiments, the first information comprises at least one of:

[0127] an indication of a position of a first time domain resource unit occupied by the first resource;

[0128] an indication of a number of time domain resource units occupied by the first resource.

[0129] Exemplarily, the time domain resource unit comprises at least one of: a RE, a PRB, an OFDM symbol, a slot, a subframe, a half frame, a frame.

[0130] Exemplarily, in a case that the first resource is a resource continuous in time domain, or in a case that the first resource is continuous in time domain, the first information comprises at least one of: an indication of a position of a first time domain resource unit occupied by the first resource; an indication of a number of time domain resource units occupied by the first resource.

[0131] Exemplarily, as shown in FIGs. 7-9, the first information can comprise an indication of a position of a first time domain resource unit occupied by the first resource (i.e., T1) and an indication of a number of time domain resource units occupied by the first resource (i.e., L1).

[0132] In some embodiments, the indication of the position of the first time domain resource unit occupied by the first resource comprises at least one of:

[0133] an indication of a starting time domain position of a second time domain resource unit in which the first time domain resource unit is located;

[0134] an indication of a starting time-domain position of a resource for transmitting a first reference signal in the PDSCH resource;

[0135] an indication of a starting time-domain position of a resource for transmitting a first reference signal in the PDSCH resource;

[0136] an indication of a starting time-domain position of a resource for transmitting data in the PDSCH resource.

[0137] Exemplarily, the first reference signal can be an NR DMRS or a legacy DMRS. The legacy DMRS can be a Long Term Evolution (LTE) DMRS, etc.

[0138] Exemplarily, a length of the first time-domain unit is smaller than that of the second time-domain unit, and the first time-domain unit is located in the second time-domain unit. For example, when the first time-domain resource unit is a specific OFDM symbol, the second time-domain resource unit can be a time slot in which the specific OFDM symbol is located.

[0139] It should be understood that in other alternative embodiments, the network-side device can also indicate a resource position of a second resource in the first resource, the first resource being a resource with interference less than or equal to a preset threshold, and the second resource being used to acquire channel state information. The indication manner of the resource position of the second resource is the same as or different from the indication manner of the resource position of the first resource.

[0140] For example, as shown in FIG. 10, the first information can include an indication of a position of the first resource relative to a subcarrier 0 of a first physical resource block (PRB) in a PDSCH resource (i.e., F1), an indication of a number of frequency-domain resource units occupied by the first resource (i.e., L2), an indication of a position of a first first time-domain resource unit occupied by the first resource (i.e., T1), and an indication of a number of first time-domain resource units occupied by the first resource (i.e., L1). When indicating the resource position of the second resource to the terminal, the network-side device can indicate to the terminal an indication of a number of frequency-domain resource units occupied by the second resource (i.e., L4), an indication of a position of a first first time-domain resource unit occupied by the second resource (i.e., T2), and an indication of a number of first time-domain resource units occupied by the second resource (i.e., L3).

[0141] In some embodiments, the first information includes at least one of the following:

[0142] configuration information of a reference signal resource set;

[0143] an indication of a position of the reference signal resource set:

[0144] The configuration information includes at least one of the following:

[0145] a configuration type of the reference signal resource set;

[0146] a number of time domain resource units occupied by the reference signal resource set;

[0147] a number of frequency domain resource units occupied by the reference signal resource set;

[0148] a port number corresponding to the reference signal resource set.

[0149] Exemplarily, the frequency domain unit can be an RE, a PRB, a subcarrier, a subband, a bandwidth part (BWP), a frequency band, etc. The time domain resource unit includes at least one of the following: an RE, a PRB, an OFDM symbol, a slot, a subframe, a half frame, a frame.

[0150] Exemplarily, the first resource includes at least one reference signal resource set, and the first information includes at least one of the following: configuration information of the at least one reference signal resource set; a position indication of the at least one reference signal resource set.

[0151] In this embodiment, the first information includes at least one of the following: configuration information of a reference signal resource set; a position indication of the reference signal resource set; equivalently, the network side device can flexibly indicate the configuration information or the position indication of the reference signal resource set, equivalently, the network side device can flexibly indicate the resource used by the terminal to acquire channel state information through the configuration information or the position indication of the reference signal resource set, thereby being capable of improving the diversity and flexibility of the channel state information.

[0152] In some embodiments, the configuration type of the reference signal resource set includes at least one of the following:

[0153] a first configuration type, a second configuration type, a third configuration type;

[0154] In the reference signal resource set of the first configuration type, a same port number corresponds to discontinuous multiple resource elements (REs); in the reference signal resource set of the second configuration type, a same port number corresponds to a discontinuous multiple resource element (RE) set, and the RE set includes continuous multiple REs; in the reference signal resource set of the third configuration type, a same port number corresponds to continuous multiple REs.

[0155] Exemplarily, in the reference signal resource set of the first configuration type or the reference signal resource set of the second configuration type, the RE corresponding to a same port occupies part of the REs in the reference signal resource set; in the reference signal resource set of the third configuration type, the RE corresponding to a same port occupies all the REs in the reference signal resource set.

[0156] In some embodiments, the same port number corresponds to a plurality of consecutive resource elements (REs), including any of the following:

[0157] The same port number corresponds to a single time-domain resource unit and a plurality of consecutive frequency-domain resource units;

[0158] The same port number corresponds to a single frequency-domain resource unit and a plurality of consecutive time-domain resource units;

[0159] The same port number corresponds to a plurality of consecutive time-domain resource units and a plurality of consecutive frequency-domain resource units;

[0160] wherein M and N are both positive integers greater than or equal to 1.

[0161] Exemplarily, the frequency-domain unit can be an RE, a PRB, a subcarrier, a subband, a bandwidth part (BWP), a frequency band, etc. The first time-domain resource unit includes at least one of the following: an RE, a PRB, an OFDM symbol, a slot, a subframe, a half frame, a frame.

[0162] Exemplarily, for each OFDM symbol, a resource block of a plurality of consecutive subcarriers in the frequency domain is divided into a code division multiplexing group.

[0163] Exemplarily, for each subcarrier, a resource block of a plurality of consecutive OFDM symbols in the time domain is divided into a code division multiplexing group.

[0164] Exemplarily, an RE formed by a plurality of consecutive subcarriers in the frequency domain and a plurality of consecutive OFDM symbols in the time domain is divided into a code division multiplexing group, wherein P = M*N.

[0165] It should be noted that the reference signal resource set of the first configuration type, the reference signal resource set of the second configuration type, or the reference signal resource set of the third configuration type involved in the present application can include one port number or a plurality of port numbers, which is not specifically limited in the present application. If a plurality of port numbers are included, when the REs corresponding to different port numbers are the same, the transmission of signals or data can be in the form of time division multiplexing (TDM), frequency division multiplexing (FDM), or code division multiplexing (CDM).

[0166] For example, for the reference signal resource set of the first configuration type, as shown in (a) of FIG. 11, a single-symbol structure supports a maximum of 2 ports (i.e., port 0 and port 1), as shown in (b) of FIG. 11, a double-symbol structure supports a maximum of 2 ports (i.e., port 0 and port 1); different ports realize parallel transmission of multiple signals on the same time-domain resource through FDM. As shown in (a) of FIG. 12, a single-symbol structure supports a maximum of 4 ports (i.e., port 0 to port 3), as shown in (b) of FIG. 12, a double-symbol structure supports a maximum of 8 ports (i.e., port 0 to port 7); different ports within the same CDM group realize parallel transmission on the same time-frequency domain resource through CDM, and different CDM groups realize parallel transmission of multiple signals on the same time-domain resource through FDM.

[0167] For example, for the reference signal resource set of the first configuration type, as shown in (a) of FIG. 11, a single-symbol structure supports a maximum of 2 ports (i.e., port 0 and port 1), as shown in (b) of FIG. 11, a double-symbol structure supports a maximum of 2 ports (i.e., port 0 and port 1); different ports realize parallel transmission of multiple signals on the same time-domain resource through FDM. As shown in (a) of FIG. 12, a single-symbol structure supports a maximum of 4 ports (i.e., port 0 to port 3), as shown in (b) of FIG. 12, a double-symbol structure supports a maximum of 8 ports (i.e., port 0 to port 7); different ports within the same CDM group realize parallel transmission on the same time-frequency domain resource through CDM, and different CDM groups realize parallel transmission of multiple signals on the same time-domain resource through FDM.

[0168] For example, for the reference signal resource set of the first configuration type, as shown in (a) of FIG. 11, a single-symbol structure supports a maximum of 2 ports (i.e., port 0 and port 1), as shown in (b) of FIG. 11, a double-symbol structure supports a maximum of 2 ports (i.e., port 0 and port 1); different ports realize parallel transmission of multiple signals on the same time-domain resource through FDM. As shown in (a) of FIG. 12, a single-symbol structure supports a maximum of 4 ports (i.e., port 0 to port 3), as shown in (b) of FIG. 12, a double-symbol structure supports a maximum of 8 ports (i.e., port 0 to port 7); different ports within the same CDM group realize parallel transmission on the same time-frequency domain resource through CDM, and different CDM groups realize parallel transmission of multiple signals on the same time-domain resource through FDM.

[0169] It should be noted that, in the present application, the position indication of the reference signal resource set is intended to indicate the distribution of the reference signal resource set in the first resource, but the specific distribution of the reference signal resource set in the first resource is not limited in the present application.

[0170] In some embodiments, the position indication of the reference signal resource set comprises at least one of the following:

[0171] an indication of a starting time domain position of a first of the reference signal resource sets;

[0172] an indication of a starting frequency domain position of a first of the reference signal resource sets;

[0173] an indication of a time domain periodicity of the reference signal resource sets;

[0174] an indication of a number of the reference signal resource sets in time domain;

[0175] an indication of a frequency domain periodicity of the reference signal resource sets;

[0176] an indication of a number of the reference signal resource sets in frequency domain;

[0177] an indication of a respective starting resource element, RE, position of the reference signal resource sets;

[0178] an indication of a frequency hopping position of the reference signal resource sets.

[0179] Exemplarily, the first of the reference signal resource sets can be a reference signal resource set which is first in both time domain and frequency domain.

[0180] Exemplarily, the indication of the respective starting resource element, RE, position of the reference signal resource sets can indicate the respective starting RE position by means of a bitmap.

[0181] Exemplarily, the position indication of the reference signal resource sets can comprise an indication of a starting time domain position of a first of the reference signal resource sets, an indication of a starting frequency domain position of the first of the reference signal resource sets, an indication of a number of the reference signal resource sets in time domain, and an indication of a number of the reference signal resource sets in frequency domain. For example, when the number of the reference signal resource sets in time domain and the number of the reference signal resource sets in frequency domain are both 1, the first resource comprises one of the reference signal resource sets, as shown in FIG. 18.

[0182] Exemplarily, the position indication of the reference signal resource sets can comprise an indication of a starting time domain position of a first of the reference signal resource sets, an indication of a starting frequency domain position of the first of the reference signal resource sets, an indication of a number of the reference signal resource sets in time domain, an indication of a time domain periodicity of the reference signal resource sets, and an indication of a number of the reference signal resource sets in frequency domain. For example, when the number of the reference signal resource sets in frequency domain is 1 and the number of the reference signal resource sets in time domain is 5, the first resource comprises 5 reference signal resource sets which are periodically distributed in time domain, as shown in FIG. 19.

[0183] Exemplarily, the position indication of the reference signal resource set can comprise: an indication of a starting time domain position of the first reference signal resource set, an indication of a starting frequency domain position of the first reference signal resource set, an indication of a quantity of the reference signal resource set in time domain, an indication of a quantity of the reference signal resource set in frequency domain, and an indication of a frequency domain periodicity of the reference signal resource set. For example, when the quantity of the reference signal resource set in time domain is 1 and the quantity of the reference signal resource set in frequency domain is 3, the first resource comprises 3 reference signal resource sets periodically distributed in frequency domain as shown in FIG. 20.

[0184] Exemplarily, the position indication of the reference signal resource set can comprise: an indication of a starting time domain position of the first reference signal resource set, an indication of a starting frequency domain position of the first reference signal resource set, an indication of a quantity of the reference signal resource set in time domain, an indication of a time domain periodicity of the reference signal resource set, an indication of a quantity of the reference signal resource set in frequency domain, and an indication of a frequency domain periodicity of the reference signal resource set. For example, when the quantity of the reference signal resource set in time domain is 5 and the quantity of the reference signal resource set in frequency domain is 3, the first resource comprises 15 reference signal resource sets periodically distributed in frequency domain and time domain as shown in FIG. 21.

[0185] Exemplarily, the position indication of the reference signal resource set can comprise: an indication of a frequency hopping position of the reference signal resource set. For example, the position indication of the reference signal resource set can comprise: an indication of 6 frequency hopping positions as shown in FIG. 22.

[0186] Exemplarily, the first resource can comprise reference signal resource sets located within PDSCH resource, or can comprise reference signal resource sets located outside PDSCH resource. Alternatively, at least part of the reference signal resource sets in the first resource can be PDSCH resource. For example, when the quantity of the reference signal resource set in time domain is 6 and the quantity of the reference signal resource set in frequency domain is 3, the first resource comprises 18 reference signal resource sets periodically distributed in frequency domain and time domain as shown in FIG. 23, wherein 15 reference signal resource sets are located within PDSCH resource and 3 reference signal resource sets are located outside PDSCH resource.

[0187] Of course, in other alternative embodiments, the starting RE position of the reference signal resource set in the first resource shown in any of FIG. 18 to FIG. 23 can also be indicated by a bitmap, which is not specifically limited in the present application.

[0188] It should be noted that in this application, as shown in FIG. 24, the indication of the starting time domain position of the first reference signal resource set can be the indication of the starting time domain position relative to the PDSCH resource (i.e., T3), and the indication of the starting frequency domain position of the first reference signal resource set can be the indication of the position relative to the subcarrier 0 of the first physical resource block (PRB) in the PDSCH resource (i.e., F3).

[0189] It should be understood that in other alternative embodiments, the network side device can also indicate the resource position of the second resource in the first resource, the first resource being a resource with interference less than or equal to a preset threshold, and the second resource being used to obtain channel state information. Wherein, the first resource is a resource continuous in time and frequency domain, and the second resource includes one or more reference signal resource sets.

[0190] For example, when the second resource includes one reference signal resource set, as shown in FIG. 25, the first information can include the indication of the position of the first resource relative to the subcarrier 0 of the first physical resource block (PRB) in the PDSCH resource (i.e., F1), the indication of the number of frequency domain resource units occupied by the first resource (i.e., L2), the indication of the position of the first first time domain resource unit occupied by the first resource (i.e., T1), and the indication of the number of first time domain resource units occupied by the first resource (i.e., L1). When the network side device indicates the resource position of the second resource to the terminal, the network side device can indicate to the terminal the indication of the position of the first first time domain resource unit occupied by the one reference signal resource set (i.e., T3) and the indication of the position relative to the subcarrier 0 of the first physical resource block (PRB) in the PDSCH resource (i.e., F3).

[0191] In some embodiments, the method 200 further includes:

[0192] The terminal determines the power control parameter of the second reference signal transmitted on the first resource based on the number of CDM groups without data (Number of CDM groups without data) corresponding to the reference signal resource set or the configuration type of the reference signal resource set; or

[0193] The terminal receives a power indication from the network side device, the power indication being used to indicate the power control parameter of the second reference signal transmitted on the first resource.

[0194] Exemplarily, the terminal can scale the second reference signal according to the power indication, so that the transmission power of the second reference signal is within a specified range.

[0195] Exemplarily, the terminal can determine the power control parameter according to the following Table 4.

[0196] Table 4

[0197] wherein, X1 = 0dB, which means that the EPER of the first resource is the same as the EPER of the PDSCH resource; X2 = -3dB, which means that the EPER of the first resource is twice the EPER of the PDSCH resource; X3 = 4.77dB, which means that the EPER of the first resource is three times the EPER of the PDSCH resource.

[0198] In some embodiments, the EPER (Energy Per Resource Element) of each resource element of the first resource is the same as the EPER of the resource used for transmitting data in the PDSCH resource, or the EPER of each resource element of the first resource is a multiple of the EPER of the resource used for transmitting data in the PDSCH resource.

[0199] In some embodiments, the PRG (Physical Resource Block Group) configuration of the first resource is the same as or different from the PRG configuration of the PDSCH resource; or

[0200] In the case that the first PRG in the first resource and the second PRG in the PDSCH resource are the same in the frequency domain or the same in the time domain, the precoding matrix used by the first PRG is the same as or different from the precoding matrix used by the second PRG.

[0201] Exemplarily, the network side device can indicate the PRG configuration of the first resource, or the PRG configuration of the first resource is agreed through a protocol.

[0202] Exemplarily, the PRG configuration of the first resource can include a PRG size. For example, the PRG size of the first resource can be in the range of {2, 4, wideband}. Wideband means that all allocated RBs use the same precoding matrix, and {2, 4} means that the same precoding matrix is used on every 2 or 4 consecutive RBs. The PRG of the first resource can be calculated from the PRB 0 of the first resource.

[0203] Exemplarily, the network side device can also indicate to the terminal that the PRG configuration of the first resource is the same as or different from the PRG configuration of the PDSCH resource; or it can be agreed through a protocol that the PRG configuration of the first resource is the same as or different from the PRG configuration of the PDSCH resource.

[0204] Exemplarily, in a case that the first PRG in the first resource and the second PRG in the PDSCH resource are same in frequency domain or same in time domain, the network-side device can indicate the terminal that the precoding matrix used by the first PRG and the precoding matrix used by the second PRG are same or different, or it can be agreed by protocol that the precoding matrix used by the first PRG and the precoding matrix used by the second PRG are same or different.

[0205] Exemplarily, if the PRG configuration of the first resource and the PRG configuration of the PDSCH resource are same, the precoding matrix used by the same PRG in the first resource and the PDSCH resource are same or different. For example, if the PRG configuration of the first resource and the PRG configuration of the PDSCH resource are same, the network-side device can indicate the terminal that the precoding matrix used by the same PRG in the first resource and the PDSCH resource are same or different, or it can be agreed by protocol that the precoding matrix used by the same PRG in the first resource and the PDSCH resource are same or different.

[0206] It should be noted that in the frequency domain, the terminal can make certain assumptions about the correlation of the reference signal. The range of such correlation is defined as a PRG. The terminal can consider that the downlink precoding matrix within the same PRG remains consistent, and such assumption can improve the channel estimation performance. However, between different PRGs, the terminal cannot assume whether the downlink precoding matrix remains consistent. Therefore, this is actually a balance between precoding flexibility and channel estimation performance. The larger the PRG, the better the channel estimation performance, but the worse the precoding flexibility, and vice versa.

[0207] In some embodiments, the sequence type used by the second reference signal transmitted on the first resource is same as the sequence type used by the first reference signal transmitted on the PDSCH resource, or

[0208] The generation parameter of the initial sequence of the second reference signal transmitted on the first resource is same as the generation parameter of the initial sequence of the first reference signal transmitted on the PDSCH resource.

[0209] Exemplarily, the first reference signal can be an NR DMRS or a legacy DMRS. The legacy DMRS can be a Long Term Evolution (LTE) DMRS, etc.

[0210] In some embodiments, the first information is a downlink control information (DCI) used for scheduling the PDSCH resource.

[0211] Of course, in other alternative embodiments, the first information can also be carried in radio resource control (RRC) signaling or a media access control (MAC) control element (CE), which is not limited in the present application.

[0212] It should be noted that if the interference of the first resource is less than or equal to a preset threshold, the terminal can obtain ideal channel state information on the first resource, which can be used as a tag to train an AI model. After the AI model is trained, as shown in FIG. 26, the input of the AI model is non-ideal channel state information, and the output of the model is ideal channel state information; the terminal obtains high-precision channel state information through the AI model, which can be further used for interference cancellation, improving the precision of equalization detection, etc. That is, the AI model replaces the channel estimation module, and the more accurate channel estimated by the AI model is used for channel equalization, such as minimum mean square error-interference rejection combining (MMSE-IRC) equalization, etc. The AI model can also be used for channel interpolation, which is not limited in the present application.

[0213] The resource indication method provided in the embodiments of the present application can be executed by a resource indication device. In the embodiments of the present application, the resource indication method executed by the resource indication device is taken as an example to illustrate the resource indication device provided in the embodiments of the present application.

[0214] FIG. 27 is a schematic block diagram of a resource indication device 300 according to the embodiments of the present application.

[0215] As shown in FIG. 27, the resource indication device 300 includes:

[0216] The receiving unit 310 is configured to receive first information from a network side device.

[0217] The first information is used to indicate a first resource, and the first resource is used by a terminal to obtain channel state information.

[0218] In some embodiments, the interference of the first resource is less than or equal to a preset threshold, and the interference of the first resource includes at least one of the following: adjacent cell interference, multi-user interference in the same cell, same frequency interference, and adjacent frequency interference.

[0219] In some embodiments, the first information is used to indicate whether the resource used to transmit the first reference signal in the physical downlink shared channel (PDSCH) resource is the first resource.

[0220] In some embodiments, the first information is used to indicate a resource location of the first resource, or the first information is used to indicate a resource location of the first resource in a physical downlink shared channel, PDSCH, resource.

[0221] In some embodiments, in a case that the first information is used to indicate a resource location of the first resource, the first resource and a physical downlink shared channel, PDSCH, resource at least partially overlap.

[0222] In some embodiments, the first information comprises at least one of:

[0223] an indication of a location of the first resource relative to a subcarrier 0 of a common resource block, CRB;

[0224] an indication of a location of the first resource relative to a subcarrier 0 of a first physical resource block, PRB, in a physical downlink shared channel, PDSCH, resource;

[0225] an indication of a location of the first resource relative to a subcarrier 0 of a first physical resource block, PRB, in a physical downlink shared channel, PDSCH, resource used for transmission of a first reference signal;

[0226] an indication of a location of the first resource relative to a subcarrier 0 of a first physical resource block, PRB, in a physical downlink shared channel, PDSCH, resource used for transmission of data;

[0227] an indication of a number of frequency domain resource units occupied by the first resource.

[0228] In some embodiments, the first information comprises at least one of:

[0229] an indication of a location of a first first time domain resource unit occupied by the first resource;

[0230] an indication of a number of first time domain resource units occupied by the first resource.

[0231] In some embodiments, the indication of a location of a first first time domain resource unit occupied by the first resource comprises at least one of:

[0232] an indication of a starting time domain location relative to a second time domain resource unit in which the first first time domain resource unit is located;

[0233] an indication of a starting time domain location relative to a physical downlink shared channel, PDSCH, resource;

[0234] an indication of a starting time domain location relative to a resource in a physical downlink shared channel, PDSCH, resource used for transmission of a first reference signal;

[0235] An indication of a starting time domain position of a resource for transmitting data in a physical downlink shared channel (PDSCH) resource.

[0236] In some embodiments, the first information comprises at least one of:

[0237] configuration information of a reference signal resource set;

[0238] an indication of a location of the reference signal resource set:

[0239] wherein the configuration information comprises at least one of:

[0240] a configuration type of the reference signal resource set;

[0241] a number of time domain resource units occupied by the reference signal resource set;

[0242] a number of frequency domain resource units occupied by the reference signal resource set;

[0243] a port number corresponding to the reference signal resource set.

[0244] In some embodiments, the configuration type of the reference signal resource set comprises at least one of:

[0245] a first configuration type, a second configuration type, and a third configuration type;

[0246] wherein in the reference signal resource set of the first configuration type, a same port number corresponds to discontinuous multiple resource elements (REs); in the reference signal resource set of the second configuration type, a same port number corresponds to discontinuous multiple RE sets, and each of the RE sets comprises continuous multiple REs; and in the reference signal resource set of the third configuration type, a same port number corresponds to continuous multiple REs.

[0247] In some embodiments, the same port number corresponds to continuous multiple REs, including any one of:

[0248] a same port number corresponds to a single time domain resource unit and continuous M frequency domain resource units;

[0249] a same port number corresponds to a single frequency domain resource unit and continuous N time domain resource units;

[0250] a same port number corresponds to continuous N time domain resource units and continuous M frequency domain resource units;

[0251] wherein M and N are both positive integers greater than or equal to 1.

[0252] In some embodiments, the indication of the location of the reference signal resource set comprises at least one of:

[0253] an indication of a starting time domain position of a first of the reference signal resource sets;

[0254] an indication of a starting frequency domain position of a first of the reference signal resource sets;

[0255] an indication of a time domain periodicity of the reference signal resource sets;

[0256] an indication of a number of the reference signal resource sets in time domain;

[0257] an indication of a frequency domain periodicity of the reference signal resource sets;

[0258] an indication of a number of the reference signal resource sets in frequency domain;

[0259] an indication of a respective starting resource element, RE, position of the reference signal resource sets;

[0260] an indication of a frequency hopping position of the reference signal resource sets.

[0261] In some embodiments, the apparatus 300 further comprises:

[0262] a determining unit configured to determine a power control parameter of a second reference signal transmitted on the first resource based on a number of code division multiplexing, CDM, groups corresponding to the reference signal resource sets which are not used for data transmission or a configuration type of the reference signal resource sets; or

[0263] The receiving unit 310 is further configured to receive a power indication from the network side device, the power indication being used to indicate the power control parameter of the second reference signal transmitted on the first resource.

[0264] In some embodiments, an energy EPER of each resource element of the first resource is the same as or a multiple of an EPER of a resource used for transmitting data in a physical downlink shared channel, PDSCH, resource.

[0265] In some embodiments, a physical resource block group, PRG, configuration of the first resource is the same as or different from a PRG configuration of a PDSCH resource; or

[0266] In a case where a first PRG in the first resource and a second PRG in the PDSCH resource are the same in frequency domain or the same in time domain, a precoding matrix used by the first PRG is the same as or different from a precoding matrix used by the second PRG.

[0267] In some embodiments, a sequence type used by the second reference signal transmitted on the first resource is same as a sequence type used by the first reference signal transmitted on the physical downlink shared channel (PDSCH) resource, or

[0268] A generation parameter of an initial sequence of the second reference signal transmitted on the first resource is same as a generation parameter of an initial sequence of the first reference signal transmitted on the physical downlink shared channel (PDSCH) resource.

[0269] In some embodiments, the first information is downlink control information (DCI) used for scheduling the physical downlink shared channel (PDSCH) resource.

[0270] It should be understood that the resource indication apparatus 300 provided by the embodiments of the present application can correspond to the terminal in the method embodiments of the present application, and each unit in the resource indication apparatus 300 is respectively used to implement the corresponding flow of the method 200 shown in FIG. 6, and details are not described herein for simplicity.

[0271] FIG. 28 is a schematic block diagram of a resource indication apparatus 400 according to an embodiment of the present application.

[0272] As shown in FIG. 28, the resource indication apparatus 400 includes:

[0273] a sending unit 410, configured to send first information to a terminal;

[0274] The first information is used to indicate a first resource, and the first resource is used by the terminal to obtain channel state information.

[0275] In some embodiments, interference of the first resource is less than or equal to a preset threshold, and the interference of the first resource includes at least one of the following: inter-cell interference, multi-user interference in the same cell, same-frequency interference, and adjacent-frequency interference.

[0276] In some embodiments, the first information is used to indicate whether a resource used to transmit a first reference signal in a physical downlink shared channel (PDSCH) resource is the first resource.

[0277] In some embodiments, the first information is used to indicate a resource location of the first resource, or the first information is used to indicate a resource location of the first resource in the physical downlink shared channel (PDSCH) resource.

[0278] In some embodiments, in a case where the first information is used to indicate the resource location of the first resource, the first resource and the physical downlink shared channel (PDSCH) resource at least partially overlap.

[0279] In some embodiments, the first information includes at least one of the following:

[0280] an indication of a location of the first resource relative to a subcarrier 0 of a common resource block, CRB;

[0281] an indication of a location of the first resource relative to a subcarrier 0 of a first physical resource block, PRB, in a physical downlink shared channel, PDSCH, resource;

[0282] an indication of a location of the first resource relative to a subcarrier 0 of a first physical resource block, PRB, in a physical downlink shared channel, PDSCH, resource used for transmission of a first reference signal;

[0283] an indication of a location of the first resource relative to a subcarrier 0 of a first physical resource block, PRB, in a physical downlink shared channel, PDSCH, resource used for transmission of data;

[0284] an indication of a number of frequency domain resource units occupied by the first resource.

[0285] In some embodiments, the first information comprises at least one of:

[0286] an indication of a location of a first time domain resource unit occupied by the first resource;

[0287] an indication of a number of time domain resource units occupied by the first resource.

[0288] In some embodiments, the indication of the location of the first time domain resource unit occupied by the first resource comprises at least one of:

[0289] an indication of a starting time domain location relative to a second time domain resource unit in which the first time domain resource unit is located;

[0290] an indication of a starting time domain location relative to a physical downlink shared channel, PDSCH, resource;

[0291] an indication of a starting time domain location relative to a resource in a physical downlink shared channel, PDSCH, resource used for transmission of a first reference signal;

[0292] an indication of a starting time domain location relative to a resource in a physical downlink shared channel, PDSCH, resource used for transmission of data.

[0293] In some embodiments, the first information comprises at least one of:

[0294] configuration information of a reference signal resource set;

[0295] an indication of a location of the reference signal resource set:

[0296] wherein the configuration information comprises at least one of:

[0297] a configuration type of the reference signal resource set;

[0298] a quantity of time domain resource units occupied by the reference signal resource set;

[0299] a quantity of frequency domain resource units occupied by the reference signal resource set;

[0300] a port number corresponding to the reference signal resource set.

[0301] In some embodiments, the configuration type of the reference signal resource set comprises at least one of the following:

[0302] a first configuration type, a second configuration type, a third configuration type;

[0303] wherein in the reference signal resource set of the first configuration type, a same port number corresponds to discontinuous multiple resource elements REs; in the reference signal resource set of the second configuration type, a same port number corresponds to discontinuous multiple resource element RE sets, and the RE set comprises continuous multiple REs; in the reference signal resource set of the third configuration type, a same port number corresponds to continuous multiple resource elements REs.

[0304] In some embodiments, the same port number corresponds to continuous multiple resource elements REs, comprising any one of the following:

[0305] a same port number corresponds to a single time domain resource unit and continuous M frequency domain resource units;

[0306] a same port number corresponds to a single frequency domain resource unit and continuous N time domain resource units;

[0307] a same port number corresponds to continuous N time domain resource units and continuous M frequency domain resource units;

[0308] wherein M and N are both positive integers greater than or equal to 1.

[0309] In some embodiments, the position indication of the reference signal resource set comprises at least one of the following:

[0310] an indication of a starting time domain position of a first reference signal resource set;

[0311] an indication of a starting frequency domain position of a first reference signal resource set;

[0312] an indication of a time domain period of the reference signal resource set;

[0313] an indication of a quantity of the reference signal resource set in time domain;

[0314] an indication of a frequency domain period of the reference signal resource set;

[0315] an indication of a quantity of the reference signal resource set in a frequency domain;

[0316] an indication of a quantity of the reference signal resource set in a frequency domain;

[0317] an indication of a quantity of the reference signal resource set in a frequency domain;

[0318] In some embodiments, the apparatus 400 further includes:

[0319] a determining unit, configured to determine a power control parameter of the second reference signal transmitted on the first resource based on a quantity of code division multiplexing (CDM) groups corresponding to the reference signal resource set and not used for data transmission or a configuration type of the reference signal resource set; or

[0320] The sending unit 410 is further configured to send a power indication to the terminal, the power indication being used to indicate the power control parameter of the second reference signal transmitted on the first resource.

[0321] In some embodiments, an energy EPER of each resource element of the first resource is the same as or a multiple of an energy EPER of a resource used for transmitting data in a physical downlink shared channel (PDSCH) resource.

[0322] In some embodiments, a physical resource block group (PRG) configuration of the first resource is the same as or different from a PRG configuration of a physical downlink shared channel (PDSCH) resource.

[0323] In a case where a first PRG in the first resource and a second PRG in the PDSCH resource are the same in a frequency domain or the same in a time domain, a precoding matrix used by the first PRG is the same as or different from a precoding matrix used by the second PRG.

[0324] In some embodiments, a sequence type used by the second reference signal transmitted on the first resource is the same as or different from a sequence type used by the first reference signal transmitted on the PDSCH resource.

[0325] A generation parameter of an initial sequence of the second reference signal transmitted on the first resource is the same as a generation parameter of an initial sequence of the first reference signal transmitted on the PDSCH resource.

[0326] In some embodiments, the first information is downlink control information (DCI) used for scheduling the PDSCH resource.

[0327] It should be understood that the resource indication apparatus 400 provided by the embodiments of the present application can correspond to the network side device in the method embodiments of the present application, and each unit in the resource indication apparatus 400 is respectively used to implement the corresponding flow of the method 200 shown in FIG. 6. For brevity, details are not described herein again.

[0328] The resource indication apparatus in the embodiments of the present application can be an electronic device, for example, an electronic device with an operating system, or a component in the electronic device, for example, an integrated circuit or a chip. The electronic device can be a terminal, a network side device or other device. The types of the terminal can include, but are not limited to, the types of the terminal 11 listed above, the types of the network side device can include, but are not limited to, the types of the network side device 12 listed above, and the other device can be a server, a network attached storage (NAS) or the like, which is not limited in the embodiments of the present application.

[0329] The resource indication apparatus provided by the embodiments of the present application can implement each process of the method embodiments of FIG. 6 and achieve the same technical effects. To avoid repetition, details are not described herein again.

[0330] The embodiments of the present application further provide a communication device 500 as shown in FIG. 29, which includes a processor 501 and a memory 502, and the memory 502 stores programs or instructions executable on the processor 501, which are executed by the processor 501 to implement each step of the above resource indication method embodiments. For example, when the communication device 500 is a terminal, the programs or instructions are executed by the processor 501 to implement each step of the above resource indication method embodiments performed by the terminal, and the same technical effects can be achieved. When the communication device 500 is a network side device, the programs or instructions are executed by the processor 501 to implement each step of the above resource indication method embodiments performed by the network side device, and the same technical effects can be achieved. To avoid repetition, details are not described herein again.

[0331] The embodiments of the present application further provide a terminal including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps in the resource indication method embodiments described above. The terminal embodiments correspond to the above terminal side method embodiments, and each implementation process and implementation manner of the above method embodiments can be applicable to the terminal embodiments, and the same technical effects can be achieved.

[0332] Specifically, FIG. 30 is a hardware structure schematic diagram of a terminal 600 for implementing the embodiments of the present application.

[0333] As shown in FIG. 30, the terminal 600 includes, but is not limited to, at least part of components such as a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, and a processor 610.

[0334] Those skilled in the art can understand that the terminal 600 can further 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 610 through a power management system, so that the power management system can realize functions such as management of charging, discharging, and power consumption management. The terminal structure shown in FIG. 30 does not constitute a limitation on the terminal, and the terminal can include more or fewer components than shown, or combine certain components, or different component arrangements, which are not described here.

[0335] It should be understood that in the embodiments of the present application, the input unit 604 can include a graphics processing unit (GPU) 6041 and a microphone 6042. The graphics processor 6041 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 606 can include a display panel 6061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 can include two parts of a touch detection device and a touch controller. The other input devices 6072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), trackballs, mice, joysticks, etc., which are not described here.

[0336] In the embodiments of the present application, the radio frequency unit 601 can transmit the downlink data received from the network side device to the processor 610 for processing. In addition, the radio frequency unit 601 can send uplink data to the network side device. Generally, the radio frequency unit 601 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0337] The memory 609 can be used to store software programs or instructions and various data. The memory 609 can mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory 609 can include a volatile memory or a non-volatile memory. The non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced SDRAM (ESDRAM), a synch link DRAM (SLDRAM), and a direct memory bus random access memory (Direct Rambus RAM, DRRAM). The memory 609 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0338] The processor 610 can include one or more processing units; optionally, the processor 610 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and an application program, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 610.

[0339] The radio frequency unit 601 is configured to receive first information from a network side device.

[0340] The first information is used to indicate a first resource, and the first resource is used for the terminal to acquire channel state information.

[0341] In the embodiments of the present application, the terminal receives first information from the network side device; wherein the first information is used for indicating first resources, and the first resources are used for the terminal to acquire channel state information. That is, the network side device can flexibly indicate the resources used for the terminal to acquire channel state information through the first information, thereby improving the diversity and flexibility of the channel state information.

[0342] It can be understood that the implementation processes of the implementation manners mentioned in the embodiments can refer to the related descriptions of the method embodiments and achieve the same or corresponding technical effects. To avoid repetition, they will not be described here again.

[0343] The embodiments of the present application also provide a network side device, which comprises a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used for running programs or instructions to implement the steps of the resource indication method embodiments. The network side device embodiments correspond to the network side device method embodiments described above. The implementation processes and implementation manners of the method embodiments can be applied to the network side device embodiments, and the same technical effects can be achieved.

[0344] Specifically, the embodiments of the present application also provide a network side device. As shown in FIG. 31, the network side device 700 comprises an antenna 71, a radio frequency device 72, a baseband device 73, a processor 74 and a memory 75. The antenna 71 is connected with the radio frequency device 72. In the uplink direction, the radio frequency device 72 receives information through the antenna 71, and sends the received information to the baseband device 73 for processing. In the downlink direction, the baseband device 73 processes the information to be sent and sends it to the radio frequency device 72. The radio frequency device 72 processes the received information and sends it out through the antenna 71.

[0345] The method performed by the network side device in the above embodiments can be implemented in the baseband device 73, which comprises a baseband processor.

[0346] The baseband device 73 may, for example, comprise at least one baseband board, and a plurality of chips are arranged on the baseband board, as shown in FIG. 31. One of the chips is, for example, a baseband processor, which is connected with the memory 75 through a bus interface to call the programs in the memory 75 and perform the network device operations shown in the above method embodiments.

[0347] The network side device may, for example, also comprise a network interface 76, which is, for example, a common public radio interface (Common Public Radio Interface, CPRI).

[0348] Specifically, the network side device 700 of the embodiment of the present application further comprises instructions or programs stored on the memory 75 and executable on the processor 74, the processor 74 invokes the instructions or programs in the memory 75 to execute the method performed by each module shown in the resource indication device 400 and achieve the same technical effect. To avoid repetition, details are not described herein.

[0349] The embodiment of the present application further provides a readable storage medium, the readable storage medium stores programs or instructions, the programs or instructions are executed by a processor to implement each process of the above-mentioned resource indication method embodiment, and the same technical effect can be achieved. To avoid repetition, details are not described herein.

[0350] The processor is the processor in the terminal in the above-mentioned embodiment. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. In some examples, the readable storage medium can be a non-transient readable storage medium.

[0351] The embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface and the processor are coupled, the processor is used to run programs or instructions to implement each process of the above-mentioned resource indication method embodiment, and the same technical effect can be achieved. To avoid repetition, details are not described herein.

[0352] It should be understood that the chip mentioned in the embodiment 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.

[0353] The embodiment of the present application further provides a computer program / program product, the computer program / program product is stored in a storage medium, the computer program / program product is executed by at least one processor to implement each process of the above-mentioned resource indication method embodiment, and the same technical effect can be achieved. To avoid repetition, details are not described herein.

[0354] The embodiment of the present application further provides a communication system, including: a terminal and a network side device, the terminal can be used to execute the corresponding steps of the above-mentioned resource indication method, and the network side device can be used to execute the corresponding steps of the above-mentioned resource indication method.

[0355] It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a", "comprising", or the like does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element. Furthermore, it is to be understood that the methods and apparatuses of the present application can be carried out by specific hardware, by software, or by a combination of hardware and software. It is therefore, contemplated to this patent to cover any and all modifications, variations, or equivalents that fall within the scope of the present application. Accordingly, where a concept can have been illustrated in only one of the exemplary embodiments, various aspects of the concept can be modified and / or combined to produce a variety of other embodiments that are not specifically illustrated. Thus, for purposes of describing particular embodiments, reference has been made to orientations. However, it is to be understood that the teachings of this patent are not limited in their application to any one of the mentioned orientations, but are applicable to any assembly having the features currently described or hereinafter ascertained.

[0356] From the above description of the embodiments, it is apparent that the method of the above embodiments can be realized by means of a computer software product and general hardware platform, of course, it can also be realized by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disc, optical disc, etc.), and includes a plurality of instructions for making the terminal or network side device execute the method described in each embodiment of the present application.

[0357] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative, but not restrictive. Those skilled in the art can make many forms of embodiments under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims, and these embodiments all belong to the protection scope of the present application.

Claims

1. A resource indication method, comprising: receiving, by a terminal, first information from a network side device; wherein the first information is used to indicate a first resource, and the first resource is used for the terminal to acquire channel state information.

2. The method of claim 1, wherein, interference of the first resource is less than or equal to a preset threshold, and the interference of the first resource comprises at least one of the following: inter-cell interference, multi-user interference in the same cell, co-frequency interference, and adjacent frequency interference.

3. The method of claim 1 or 2, wherein, The first information is used to indicate whether a resource used for transmitting a first reference signal in a physical downlink shared channel (PDSCH) resource is the first resource.

4. The method of claim 1 or 2, wherein, The first information is used to indicate a resource location of the first resource, or the first information is used to indicate a resource location of the first resource in a PDSCH resource.

5. The method of claim 4, wherein, In a case where the first information is used to indicate the resource location of the first resource, the first resource and the PDSCH resource at least partially overlap.

6. The method of claim 4 or 5, wherein, The first information comprises at least one of the following: a location indication of a subcarrier 0 of the first resource relative to a common resource block (CRB); a location indication of a subcarrier 0 of the first resource relative to a first physical resource block (PRB) in a PDSCH resource; a location indication of a subcarrier 0 of the first resource relative to a first PRB used for transmitting a first reference signal in a PDSCH resource; a location indication of a subcarrier 0 of the first resource relative to a first PRB used for transmitting data in a PDSCH resource; an indication of a number of frequency domain resource units occupied by the first resource.

7. The method of any one of claims 4 to 6, wherein, The first information comprises at least one of the following: a location indication of a first time domain resource unit occupied by the first resource; an indication of a number of time domain resource units occupied by the first resource.

8. The method of claim 7, wherein, The location indication of the first time domain resource unit occupied by the first resource comprises at least one of the following: an indication of a starting time domain location of a second time domain resource unit in which the first time domain resource unit is located; an indication of a starting time domain location of a PDSCH resource; an indication of a starting time domain location of a resource used for transmitting a first reference signal in a PDSCH resource; an indication of a starting time domain location of a resource used for transmitting data in a PDSCH resource.

9. The method of any one of claims 4 to 8, wherein, The first information comprises at least one of the following: configuration information of a reference signal resource set; a location indication of the reference signal resource set: wherein the configuration information comprises at least one of the following: a configuration type of the reference signal resource set; a number of time domain resource units occupied by the reference signal resource set; a number of frequency domain resource units occupied by the reference signal resource set; a port number corresponding to the reference signal resource set.

10. The method of claim 9, wherein, The configuration type of the reference signal resource set comprises at least one of the following: a first configuration type, a second configuration type, and a third configuration type. In the first type of reference signal resource set, a same port number corresponds to discontinuous multiple resource elements REs; in the second type of reference signal resource set, a same port number corresponds to discontinuous multiple resource element RE sets, and the RE set includes continuous multiple REs; and in the third type of reference signal resource set, a same port number corresponds to continuous multiple resource elements REs.

11. The method of claim 10, wherein, The same port number corresponds to continuous multiple resource elements REs, including any of the following: A same port number corresponds to a single time domain resource unit and continuous M frequency domain resource units; A same port number corresponds to a single frequency domain resource unit and continuous N time domain resource units; A same port number corresponds to continuous N time domain resource units and continuous M frequency domain resource units; Wherein, M and N are positive integers greater than or equal to 1.

12. The method of any one of claims 9-11, wherein, The position indication of the reference signal resource set includes at least one of the following: An indication of the starting time domain position of the first reference signal resource set; An indication of the starting frequency domain position of the first reference signal resource set; An indication of the time domain period of the reference signal resource set; An indication of the number of the reference signal resource set in the time domain; An indication of the frequency domain period of the reference signal resource set; An indication of the number of the reference signal resource set in the frequency domain; An indication of the starting resource element RE position of each reference signal resource set; An indication of the frequency hopping position of the reference signal resource set.

13. The method of any one of claims 9 to 12, wherein, The method further includes: The terminal determines the power control parameter of the second reference signal transmitted on the first resource based on the number of code division multiplexing CDM groups corresponding to the reference signal resource set and not used for data transmission or the configuration type of the reference signal resource set; or The terminal receives a power indication from the network side device, and the power indication is used to indicate the power control parameter of the second reference signal transmitted on the first resource.

14. The method of any one of claims 1 to 13, wherein, The energy EPER of each resource element of the first resource is the same as the EPER of the resource used for transmitting data in the physical downlink shared channel PDSCH resource, or the EPER of each resource element of the first resource is a multiple of the EPER of the resource used for transmitting data in the physical downlink shared channel PDSCH resource.

15. The method of any one of claims 1 to 14, wherein, The physical resource block group PRG configuration of the first resource is the same as or different from the PRG configuration of the physical downlink shared channel PDSCH resource; or In the case that a first PRG in the first resource and a second PRG in the PDSCH resource are the same in the frequency domain or the same in the time domain, the precoding matrix used by the first PRG is the same as or different from the precoding matrix used by the second PRG.

16. The method of any one of claims 1 to 15, wherein, The sequence type used by the second reference signal transmitted on the first resource is the same as the sequence type used by the first reference signal transmitted on the physical downlink shared channel PDSCH resource, or The generation parameter of the initial sequence of the second reference signal transmitted on the first resource is the same as the generation parameter of the initial sequence of the first reference signal transmitted on the physical downlink shared channel PDSCH resource.

17. The method of any one of claims 1 to 16, wherein, The first information is downlink control information (DCI) used for scheduling physical downlink shared channel (PDSCH) resources.

18. A resource indication method, comprising: sending, by a network-side device, first information to a terminal; wherein the first information is used to indicate a first resource, and the first resource is used by the terminal to obtain channel state information.

19. The method of claim 18, wherein, Interference of the first resource is less than or equal to a preset threshold, and the interference of the first resource includes at least one of the following: inter-cell interference, multi-user interference in the same cell, same-frequency interference, and adjacent-frequency interference.

20. The method of claim 18 or 19, wherein, The first information is used to indicate whether a resource used for transmitting a first reference signal in physical downlink shared channel (PDSCH) resources is the first resource.

21. The method of claim 18 or 19, wherein, The first information is used to indicate a resource location of the first resource, or the first information is used to indicate a resource location of the first resource in PDSCH resources.

22. The method of claim 21, wherein, In a case where the first information is used to indicate the resource location of the first resource, the first resource and the PDSCH resources at least partially overlap.

23. The method of claim 21 or 22, wherein, The first information includes at least one of the following: a location indication of a subcarrier 0 of the first resource relative to a common resource block (CRB); a location indication of a subcarrier 0 of the first resource relative to a first physical resource block (PRB) in PDSCH resources; a location indication of a subcarrier 0 of the first resource relative to a first PRB used for transmitting a first reference signal in PDSCH resources; a location indication of a subcarrier 0 of the first resource relative to a first PRB used for transmitting data in PDSCH resources; an indication of a number of frequency domain resource units occupied by the first resource.

24. The method of any one of claims 21-23, wherein, The first information includes at least one of the following: a location indication of a first first time domain resource unit occupied by the first resource; an indication of a number of first time domain resource units occupied by the first resource.

25. The method of claim 24, wherein, The location indication of the first first time domain resource unit occupied by the first resource includes at least one of the following: an indication of a starting time domain location of a second time domain resource unit in which the first first time domain resource unit is located; an indication of a starting time domain location of PDSCH resources; an indication of a starting time domain location of a resource used for transmitting a first reference signal in PDSCH resources; an indication of a starting time domain location of a resource used for transmitting data in PDSCH resources.

26. The method of any one of claims 21 to 25, wherein, The first information includes at least one of the following: configuration information of a reference signal resource set; a location indication of the reference signal resource set: wherein the configuration information includes at least one of the following: a configuration type of the reference signal resource set; a number of time domain resource units occupied by the reference signal resource set; a number of frequency domain resource units occupied by the reference signal resource set; a port number corresponding to the reference signal resource set.

27. The method of claim 26, wherein, The configuration type of the reference signal resource set includes at least one of the following: a first configuration type, a second configuration type, and a third configuration type. The same port number corresponds to discontinuous multiple resource elements RE in the first configuration type of reference signal resource set; the same port number corresponds to discontinuous multiple resource element RE sets in the second configuration type of reference signal resource set, and the RE set includes continuous multiple REs; and the same port number corresponds to continuous multiple resource elements RE in the third configuration type of reference signal resource set.

28. The method of claim 27, wherein, The same port number corresponds to continuous multiple resource elements RE, including any of the following: The same port number corresponds to a single time domain resource unit and continuous M frequency domain resource units; The same port number corresponds to a single frequency domain resource unit and continuous N time domain resource units; The same port number corresponds to continuous N time domain resource units and continuous M frequency domain resource units; Wherein, M and N are positive integers greater than or equal to 1.

29. The method of any one of claims 26-28, wherein, The position indication of the reference signal resource set includes at least one of the following: Indication of the starting time domain position of the first reference signal resource set; Indication of the starting frequency domain position of the first reference signal resource set; Indication of the time domain period of the reference signal resource set; Indication of the number of the reference signal resource set in the time domain; Indication of the frequency domain period of the reference signal resource set; Indication of the number of the reference signal resource set in the frequency domain; Indication of the starting resource element RE position of each reference signal resource set; Indication of the frequency hopping position of the reference signal resource set.

30. The method of any one of claims 26-29, wherein, The method further includes: The network side device determines the power control parameter of the second reference signal transmitted on the first resource based on the number of code division multiplexing (CDM) groups corresponding to the reference signal resource set that are not used for data transmission or the configuration type of the reference signal resource set; or The network side device sends a power indication to the terminal, and the power indication is used to indicate the power control parameter of the second reference signal transmitted on the first resource.

31. The method of any one of claims 19 to 30, wherein, The energy EPER of each resource element of the first resource is the same as the EPER of the resource used for transmitting data in the physical downlink shared channel (PDSCH) resource, or the EPER of each resource element of the first resource is a multiple of the EPER of the resource used for transmitting data in the PDSCH resource.

32. The method of any one of claims 19 to 31, wherein, The physical resource block group (PRG) configuration of the first resource is the same as or different from the PRG configuration of the PDSCH resource; or In the case that the first PRG in the first resource and the second PRG in the PDSCH resource are the same in the frequency domain or the same in the time domain, the precoding matrix used by the first PRG is the same as or different from the precoding matrix used by the second PRG.

33. The method of any one of claims 19 to 32, wherein, The sequence type used by the second reference signal transmitted on the first resource is the same as the sequence type used by the first reference signal transmitted on the PDSCH resource, or The generation parameter of the initial sequence of the second reference signal transmitted on the first resource is the same as the generation parameter of the initial sequence of the first reference signal transmitted on the PDSCH resource.

34. The method of any one of claims 19 to 33, wherein, The first information is downlink control information (DCI) used for scheduling physical downlink shared channel (PDSCH) resources.

35. A resource indication apparatus, comprising: a receiving unit configured to receive first information from a network side device; wherein the first information is used to indicate a first resource used by a terminal to acquire channel state information.

36. The apparatus of claim 35, wherein, The interference of the first resource is less than or equal to a preset threshold, and the interference of the first resource includes at least one of the following: inter-cell interference, multi-user interference in the same cell, co-frequency interference, and adjacent frequency interference.

37. A resource indication apparatus, comprising: a sending unit configured to send first information to a terminal; wherein the first information is used to indicate a first resource used by the terminal to acquire channel state information.

38. The apparatus of claim 37, wherein, The interference of the first resource is less than or equal to a preset threshold, and the interference of the first resource includes at least one of the following: inter-cell interference, multi-user interference in the same cell, co-frequency interference, and adjacent frequency interference.

39. A terminal comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement the steps of the resource indication method according to any one of claims 1 to 17.

40. A network side device comprising a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions being executed by the processor to implement the steps of the resource indication method according to any one of claims 18 to 34.

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