Reference signal configuration information sending and receiving method and apparatus, and storage medium

Abstract

Embodiments of the present disclosure relate to the technical field of communications, and provide a reference signal configuration information sending and receiving method and apparatus, and a storage medium. The sending method comprises: generating reference signal configuration information, the reference signal configuration information comprising N reference signal patterns, the N reference signal patterns corresponding to M resource units, and N and M being integers greater than 1; and sending the reference signal configuration information.

Description

Reference signal configuration information sending and receiving method, device and storage medium

[0001] Cross-references

[0002] This application claims priority to a Chinese patent application filed with the Patent Office of China on November 22, 2023, with application number 202311575071.X and titled “Method, device and storage medium for sending and receiving reference signal configuration information”. The entire contents of the application are incorporated by reference into this application. Technical Field

[0003] The present disclosure relates to the field of communication technologies, and in particular to a method, device, and storage medium for sending and receiving reference signal configuration information. Background Art

[0004] Multi-antenna technology has been widely adopted in various wireless communication technologies. This includes multiple-input-multiple-output (MIMO), joint transmission (JT), and high-frequency beamforming. To maximize the performance of multi-antenna technology, it is crucial for communication nodes to obtain accurate channel information.

[0005] Generally speaking, a channel can be acquired through a reference signal, including but not limited to a demodulation reference signal (DMRS). The receiving end obtains channel information by receiving the reference signal and obtains channel state information or demodulates data based on the obtained channel information. Among them, the reference signal has a variety of different patterns, which are generally pre-configured by the base station. The terminal receives the reference signal according to the configured pattern. However, the current configuration of the reference signal pattern is relatively simple. For example, the same reference signal pattern may be configured for different resource units, and the flexibility of the reference signal pattern configuration is low.

[0006] Summary of the Invention

[0007] The present disclosure provides a method, apparatus, and storage medium for sending and receiving reference signal configuration information.

[0008] In a first aspect, the present disclosure provides a method for transmitting reference signal configuration information, the method comprising: generating reference signal configuration information, wherein the reference signal configuration information includes N reference signal patterns, the N reference signal patterns corresponding to M resource elements, where N and M are integers greater than 1; and transmitting the reference signal configuration information.

[0009] In a second aspect, the present disclosure provides a method for receiving reference signal configuration information, the method comprising: receiving reference signal configuration information, the reference signal configuration information including N reference signal patterns, the N reference signal patterns corresponding to M resource units, where N and M are integers greater than 1; determining reference signal patterns for the M resource units, and receiving reference signals corresponding to the resource units based on the reference signal patterns for the M resource units.

[0010] In a third aspect, the present disclosure provides a communications device, comprising: a generating module configured to generate reference signal configuration information; wherein the reference signal configuration information includes N reference signal patterns corresponding to M resource elements, where N and M are integers greater than 1; and a transmitting module configured to transmit the reference signal configuration information.

[0011] In a fourth aspect, the present disclosure provides another communication device, which includes: a first receiving module for receiving reference signal configuration information, the reference signal configuration information including N reference signal patterns, the N reference signal patterns corresponding to M resource units, wherein N and M are integers greater than 1; a determination module for determining the reference signal patterns of the M resource units, and a second receiving module for receiving the reference signal corresponding to the resource unit according to the reference signal patterns of the M resource units.

[0012] In a fifth aspect, a communication device is provided, comprising: a processor and a memory; the memory stores instructions executable by the processor; when the processor is configured to execute the instructions, the communication device implements any one of the methods provided in the first to second aspects above.

[0013] In a sixth aspect, a computer-readable storage medium is provided, which stores computer instructions. When the computer instructions are executed on a computer, the computer executes any one of the methods provided in the first aspect or the second aspect.

[0014] In a seventh aspect, a computer program product comprising computer instructions is provided, which, when executed on a computer, causes the computer to execute any one of the methods provided in the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the technical solution of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solution of the present disclosure and do not constitute a limitation to the technical solution of the present disclosure.

[0016] FIG1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure;

[0017] FIG2 is a flowchart of a method for sending reference signal configuration information provided by an embodiment of the present disclosure;

[0018] FIG3 is a schematic diagram of a reference signal pattern provided by an embodiment of the present disclosure;

[0019] FIG4 is a schematic diagram of another reference signal pattern provided by an embodiment of the present disclosure;

[0020] FIG5 is a schematic diagram of another reference signal pattern provided by an embodiment of the present disclosure;

[0021] FIG6 is a schematic diagram of another reference signal pattern provided by an embodiment of the present disclosure;

[0022] FIG7 is a schematic diagram of another reference signal pattern provided by an embodiment of the present disclosure;

[0023] FIG8 is a schematic diagram of another reference signal pattern provided by an embodiment of the present disclosure;

[0024] FIG9 is a schematic diagram of another reference signal pattern provided by an embodiment of the present disclosure;

[0025] FIG10 is a flowchart of another method for receiving reference signal configuration information provided by an embodiment of the present disclosure;

[0026] FIG11 is a schematic diagram of the composition of a communication device provided in an embodiment of the present disclosure;

[0027] FIG12 is a schematic diagram of the composition of another communication device provided in an embodiment of the present disclosure;

[0028] FIG13 is a schematic structural diagram of a communication device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0030] In the description of the present disclosure, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, "at least one" means one or more, and "a plurality" means two or more. Words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not limit them to be necessarily different.

[0031] It should be noted that in this disclosure, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this disclosure as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0032] In order to demodulate the received data or signaling, a demodulation reference signal DMRS is required. DMRS can be used to demodulate uplink or downlink data. It includes at least two types of DMRS, a DMRS type 1 pattern based on interleaved frequency domain multiplexing (IFDM), and a DMRS type 2 based on frequency division orthogonal covering code (FD-OCC). Each type can also include a different number of addition symbols to adapt to different mobile speeds. For example, in a receiver based on advanced channel estimation such as artificial intelligence (AI), a lower pattern than that in NR can be used, where in DMRS type 1, a code division multiplexing (CDM) group includes 6*S resource elements (RE), while an AI-based receiver can use 1*S or 2*S REs to form a CDM group. Alternatively, in a DMRS type 2 CDM group, one CDM group includes at least 4*S REs, while an AI-based receiver may have one CDM group including 2*S REs. S is the number of symbols in a CDM group, which may be 1 or 2.

[0033] That is, DMRS can have many types of patterns, and different patterns are suitable for different channel characteristics or resource units. For example, some subbands have large frequency-selective fading, while others have low frequency selectivity. Some time slot channels correspond to fast fading, while others correspond to slow fading. In existing technologies, the configuration of DMRS patterns is relatively simple. For resources allocated to the same terminal, different layers, different time slots, and different physical resource blocks (PRBs) currently use the same pattern. However, in practice, different time slots, different PRBs, and different layers may correspond to different base stations or terminals, resulting in different channel characteristics. This configuration method is relatively simple, but has poor versatility and cannot adapt to the channel characteristics of different layers and different PRBs. It should be noted that other reference signals besides DMRS may also have multiple patterns, and different reference signal patterns can be used for different resource units. In the embodiments of the present disclosure, DMRS is taken as an example, but the methods and devices used can be extended to different types of reference signals, such as channel-state information reference signal (CSI-RS), sounding reference signal (SRS), synchronization signal block (SSB), physical broadcast channel (PBCH), synchronization signal block / physical broadcast channel (SSB / PBCH), etc.

[0034] In view of this, an embodiment of the present disclosure provides a method for transmitting reference signal configuration information, the method comprising: generating reference signal configuration information; and transmitting the reference signal configuration information, wherein the reference signal configuration information includes N reference signal patterns, each of the N reference signal patterns corresponding to M resource elements, where N and M are integers greater than 1. This allows for more flexible configuration of the reference signal patterns, thereby enhancing the flexibility of reference signal pattern configuration.

[0035] The technical solutions provided by the embodiments of the present disclosure can be applied to various mobile communication networks, for example, new radio (NR) mobile communication networks using fifth-generation mobile communication technology (5G), future mobile communication networks (including but not limited to various sixth-generation mobile communication technologies, 6G) or multiple communication convergence systems, etc. The embodiments of the present disclosure are not limited to this.

[0036] The network architecture of the mobile communication network (including but not limited to 3G, 4G, 5G and future mobile communication networks) in the embodiments of the present disclosure may include network-side devices (for example, including but not limited to base stations) and receiving-side devices (for example, including but not limited to terminals). And it should be understood that, in this example, in the downlink, the first communication node (also referred to as the first communication node device) may be a base station-side device, and the second communication node (also referred to as the second communication node device) may be a terminal-side device. Of course, in the uplink, the first communication node may also be a terminal-side device, and the second communication node may also be a base station-side device. In the device-to-device communication between the two communication nodes, the first communication node and the second communication node may both be base stations or terminals. The first communication node and the second communication node may be referred to as the first node and the second node, respectively.

[0037] For example, taking the network side device as a base station and the receiving side device as a terminal as an example, FIG1 shows a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure. As shown in FIG1 , a communication system 10 includes multiple base stations (e.g., base station 21 and base station 22) and multiple terminals (e.g., terminal 31, terminal 32, terminal 33, and terminal 34). Among them, multiple base stations and multiple terminals can be connected in communication. Among them, a base station can provide network services to a terminal in one cell, and can also provide network services to terminals in multiple cells at the same time.

[0038] In some embodiments, the base station can be a base station or an evolved base station (eNB or eNodeB) in long term evolution (LTE), long term evolution advanced (LTEA), a base station device in a 5G network, or a base station in a future communication system, etc. The base station may include various macro base stations, micro base stations, home base stations, wireless remotes, reconfigurable intelligent surfaces (RISs), routers, wireless fidelity (WIFI) devices, or various network side devices such as primary cells and collaborative cells (secondary cells).

[0039] In some embodiments, the terminal can be a device with wireless transceiver capabilities, which can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water (such as a ship, etc.); it can also be deployed in the air (for example, on an airplane, a balloon, and a satellite, etc.). The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The embodiments of the present disclosure do not limit the application scenarios. The terminal may sometimes also be referred to as a user, user equipment (UE), access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication equipment, UE agent or UE device, etc., but the embodiments of the present disclosure are not limited to this.

[0040] In some embodiments, high-layer signaling includes, but is not limited to, radio resource control (RRC), and media access control element (MAC CE), as well as other signaling other than physical layer signaling, such as LTE Positioning Protocol (LPP) high-layer signaling, NR Positioning Protocol A (NRPPa) high-layer signaling, and LTE Positioning Protocol A (LPPa) high-layer signaling, where LPP is also applied to the NR positioning protocol. Physical layer signaling can also be transmitted between the base station and the terminal. For example, downlink physical layer signaling can be transmitted between the base station and the terminal on the physical downlink control channel (PDCCH) and uplink physical layer signaling can be transmitted on the physical uplink control channel (PUCCH).

[0041] In some embodiments, the indicator of a parameter may also be referred to as an index or an identifier (ID), and the indication, identifier, and index are equivalent concepts. For example, the resource identifier of a wireless system may also be referred to as a resource indication or a resource index. The resource index of a wireless system includes, but is not limited to, one of the following: reference signal resources, reference signal resource groups, reference signal resource configurations, channel state information (CSI) reports, CSI report sets, terminals, base stations, panels, neural networks, sub-neural networks, neural network layers, precoding matrices, beams, transmission modes, sending modes, receiving modes, modules, models, functional modules, functions, and the like. The base station may indicate the identifier of one or a group of resources to the terminal through various high-layer signaling or physical layer signaling. The terminal may also feedback the identifier of one or a group of resources to the base station through high-layer signaling and / or physical layer signaling.

[0042] In some embodiments, transmitting includes sending or receiving, such as sending data or signals, or receiving data or signals.

[0043] In some embodiments, in order to calculate channel state information or perform channel estimation, mobility management, positioning, etc., a base station or terminal needs to send a reference signal (RS). Among them, the reference signal includes but is not limited to a channel state information reference signal (CSI-RS), a channel state information reference signal includes a zero power CSI-RS (zero power CSI-RS, ZP CSI-RS) and a non-zero power CSI-RS (non-zero power CSI-RS, NZP CSI-RS), a channel state information interference measurement signal (CSI-IM), a sounding reference signal (SRS), a synchronization signal block (SSB), a physical broadcast channel (PBCH), and a synchronization signal block / physical broadcast channel (SSB / PBCH). Among them, NZP CSI-RS can be used to measure channels or interference, CSI-RS can be used for tracking and can be called a tracking reference signal (CSI-RS for Tracking, TRS), while CSI-IM is generally used to measure interference, and SRS is used to measure uplink channels. In addition, the resource element (RE) set included in the time-frequency resources used to transmit reference signals is called a reference signal resource, such as CSI-RS resource, SRS resource, CSI-IM resource, SSB resource. In this article, SSB includes synchronization signal blocks and / or physical broadcast channels.

[0044] In some embodiments, in order to save signaling overhead, etc., multiple reference signal resources may be divided into multiple sets (such as CSI-RS resource set, CSI-IM resource set, SRS resource set). The reference signal resource set includes at least one reference signal resource, and multiple reference signal resource sets can come from the same reference signal resource setting (such as CSI-RS resource setting, SRS resource setting, where CSI-RS resource setting may be merged with CSI-IM resource setting, both referred to as CSI-RS resource setting) to configure parameter information.

[0045] In some embodiments, a time instance represents a time period, such as a time slot, such as a time slot, a mini slot, or a symbol group. A time slot or a sub-time slot may include at least one symbol. Here, a symbol refers to a time unit in a subframe, a frame, or a time slot, and the unit may be milliseconds, microseconds, nanoseconds, seconds, etc. For example, it may be an orthogonal frequency division multiplexing (OFDM) symbol, a single-carrier frequency division multiple access (SC-FDMA) symbol, an orthogonal frequency division multiple access (OFDMA) symbol, or symbols corresponding to various new waveforms in future communication systems, etc.

[0046] In some embodiments, the minimum transmission unit that carries a modulation symbol is a resource element (RE), which is the minimum time-frequency resource used to transmit a modulation symbol, including a frequency domain subcarrier and a radio resource on a symbol. A radio resource consisting of multiple symbols and multiple subcarriers constitutes a physical resource block, for example, symbols with consecutive indexes from 1 to 14 and 12 consecutive subcarriers with consecutive indexes constitute a physical resource block (PRB). Among them, the reference signal pattern includes at least one RE, and the reference signal is only transmitted on the RE pre-configured by the base station, which is called a reference signal pattern, such as a DMRS pattern, a CSI-RS pattern, an SRS pattern, etc.

[0047] In some embodiments, a beam includes a transmit beam, a receive beam, a receive beam and a transmit beam pair, and a transmit beam and a receive beam pair. In some embodiments, a beam can be understood as a resource, such as a reference signal resource, a transmit-end spatial filter, a receive-end spatial filter, a spatial filter, a spatial receive parameter, a transmit-end precoding, a receive-end precoding, an antenna port, an antenna weight vector, an antenna weight matrix, etc. The beam index can be replaced with a resource index (such as a reference signal resource index) because the beam can be bound to resources in at least one of the time domain, frequency domain, and code domain for transmission. A beam can also be a transmission (transmission / reception) mode, where the transmission mode can include spatial division multiplexing, frequency / time domain diversity, beamforming, etc. In addition, the base station can perform quasi co-location (QCL) configuration for two reference signals and inform the user end to describe the channel characteristics. The parameters involved in quasi-co-location here include at least: Doppler spread, Doppler shift, delay spread, average delay, average gain and spatial parameter (Spatial Rx parameter, or Spatial parameter). Among them, the spatial parameter may include spatial reception parameter, angle information, spatial correlation parameter of the receiving beam, average delay, correlation parameter of the time-frequency channel response (including phase information). The angle information may include at least one of the following: angle of arrival (AOA) and angle of departure (AOD). When the angle information includes azimuth and elevation angles, the angle of arrival includes the zenith angle of arrival (ZOA) and the azimuth angle of departure (AOD), and the departure angle includes the zenith angle of departure (ZOD) and the azimuth angle of departure (AOA). The spatial filtering can be at least one of the following: a Discrete Fourier Transform (DFT) vector, a precoding vector, a DFT matrix, a precoding matrix, a vector formed by linear combinations of multiple DFTs, or a vector formed by linear combinations of multiple precoding vectors. In some embodiments, the concepts of vector and vector are interchangeable. In some embodiments, a beam pair comprises a combination of a transmit beam and a receive beam.

[0048] In some embodiments, the beam direction or beam angle may include at least one of the following: angle of arrival (AOA), angle of departure (AOD), a vector or vector index constructed from at least one of the angles AOA and AOD, a discrete Fourier transform vector, a codeword in a codebook, a transmit beam index, a receive beam index, a transmit beam group index, and a receive beam group index. When the angle information includes an azimuth and an elevation angle, the angle of arrival includes an arrival zenith angle and an arrival azimuth angle, and the angle of departure includes a departure zenith angle and a departure azimuth angle.

[0049] In some embodiments, the communication node may select an information processing method to process the obtained information (such as channel information, channel matrix information, time domain channel information, frequency domain channel information, angle information, and position information) to obtain an information processing result (hereinafter referred to as a processing result). The processing result includes one or more of the above-mentioned channel state information, or one or more of the beam parameter information, or angle information, position information (such as coordinates), and position parameter information. For example, location parameter information includes but is not limited to at least one of the following: reference signal time difference (RSTD), relative time of arrival (RTOA), angle of arrival (AoA), angle of departure (AOD), Rx-Tx time difference, Tx-Rx time difference, reference signal received power, and multipath information. The Rx-Tx time difference includes the gNB Rx-Tx time difference and the UE Rx-Tx time difference. When the angle information includes the azimuth and elevation angles, the arrival angle includes the zenith angle of arrival (ZOA) and the azimuth angle of departure (AOD), and the departure angle includes the zenith angle of departure (ZOD) and the azimuth angle of departure (AOD). departure (AOA), increase the number of paths, increase the relative delay of the paths, increase the multipath power, increase the time domain response of the multipath, and increase the real and imaginary parts of the time domain response of the multipath.

[0050] In some embodiments, the communication node selects an information processing method to process the obtained information (e.g., channel information, channel matrix information, time domain channel information, frequency domain channel information, angle information, and position information) to obtain an information processing result. The processing result includes one or more of the channel state information or one or more of the beam parameter information.

[0051] In some embodiments, the information processing method can be a traditional information processing method or various advanced information processing methods, including but not limited to information processing methods based on artificial intelligence (AI). AI can include the following types: machine learning (ML), deep learning, reinforcement learning, transfer learning, deep reinforcement learning, and meta-learning. In some examples, the information processing method is implemented using an artificial intelligence network (also known as a neural network, a neural network model, or a model).

[0052] In some embodiments, artificial intelligence includes self-learning devices, components, software, modules, models, functional modules, functional functions, and the like, such as machine learning, deep learning, reinforcement learning, transfer learning, deep reinforcement learning, and meta-learning. In some embodiments, artificial intelligence is implemented via an artificial intelligence network (or neural network). The neural network includes multiple layers, each layer including at least one node. In one example, the neural network includes an input layer, an output layer, and at least one hidden layer. Each layer of the neural network includes, but is not limited to, at least one of a fully connected layer, a dense layer, a convolutional layer, a transposed convolutional layer, a direct connection layer, an activation function, a normalization layer, and a pooling layer. In some embodiments, each layer of the neural network may include a sub-neural network, such as a residual network block (or ResNet block), a dense network (DenseNet Block), or a recurrent neural network (RNN). The artificial intelligence network can be implemented via a model, which may include, but is not limited to, a model based on a neural network. The neural network model includes a neural network model structure and / or neural network model parameters. The neural network model structure may be referred to as the model structure, and the neural network model parameters may be referred to as the network parameters or model parameters. Based on the model structure, the number of layers of the neural network, the size of each layer, the activation function, the connection status, the convolution kernel and the size of the convolution step, the convolution type (such as 1D convolution, 2D convolution, 3D convolution, hollow convolution, transposed convolution, separable convolution, grouped convolution, extended convolution, etc.) and other network architectures can be determined, and the network parameters are the weights and / or biases corresponding to each layer of the network in the neural network model and their values. In addition, a model structure can correspond to multiple sets of different neural network model parameter values ​​to adapt to different scenarios. The neural network model parameters can then be obtained through online training or offline training, for example, by inputting at least one sample and training the neural network model to obtain the neural network model parameters.

[0053] Exemplarily, a sample includes N features and M labels, where N is a positive integer and M is an integer greater than or equal to 0. In addition, multiple samples can constitute a data set. In one example, a sample includes one feature and one label, such as a sample in supervised learning. In another example, a sample has only one feature and no label, such as a sample in unsupervised learning. In another example, a sample has multiple features and one label, such as a sample in a network model of supervised learning with multiple inputs and a single output. In another example, a sample includes one feature and multiple labels, such as a sample in a network model of supervised learning with single input and multiple output. In some embodiments, the feature of the sample can be an array, and the label is also an array. The array can be a vector or a matrix, or a tensor larger than two dimensions. Each element in the array can be a discrete value or a real value, such as a real value from 0 to 1, or a real value from -0.5 to 0.5.

[0054] In one example, the elements in the array corresponding to the label or feature need to be normalized to facilitate faster convergence of the network model. Normalization refers to normalizing the values ​​of the elements in an array to a value greater than or equal to a and less than or equal to b. For example, a = -0.5, b = 0.5. Or, a = 0, b = 1. In one example, the elements in the array can be divided by the number with the largest absolute value among the elements in the array to achieve normalization. In another example, the elements in the array can be divided by the variance of the elements in the array to achieve normalization. In one example, the elements in the array can be divided by a fixed value (such as the maximum value of all elements in all samples) to achieve normalization. In another example, the elements in the array can be divided by a statistical value (such as the statistical variance of all elements in all samples) to achieve normalization. For index values, such as beam index, CRI, SSBRI, etc., normalization can be achieved through one-hot encoding.

[0055] In some embodiments, a model refers to a data flow between the original input of a sample and the output target through multiple linear or nonlinear components. The above-mentioned models include neural network models, non-artificial intelligence modules for processing information or their corresponding models, and functional components or functions that map input information (including linear mapping and nonlinear mapping) to output information. In some embodiments, each model corresponds to a model indicator (Model ID) or a model identity (Model ID). In some embodiments, the model identity may also have one of the following other equivalent names or concepts: model index, first identifier, functional identifier, model indication, etc.

[0056] Exemplarily, a model includes a model structure and model parameters. For example, if the model is a neural network model, the neural network model includes a neural network model structure and neural network model parameters, which are used to describe the structure of the neural network and the parameter values ​​of the neural network, respectively. A neural network model structure can correspond to multiple neural network model parameters, that is, the neural network model structure can be the same, but the corresponding neural network model parameter values ​​can be different.

[0057] In some examples, a communication node may send a functionality or a functionality index to another communication node to inform the communication node that it can process information using the information processing method corresponding to the functionality index. A function may also be referred to as a functional module, a functional function, a functional mapping, a functional description, etc., which is used to describe the characteristics or type of an information processing method. Information processing methods may include a variety of types, such as information processing methods for positioning, beam management, CSI prediction, beam prediction, channel estimation, etc., and information processing method characteristics include but are not limited to a description of the scenario to which the function is adapted, a description of input parameters, a description of output parameters, and the types of measurement parameters included in the output results. A function corresponds to one or more information processing methods, and each information processing method may be implemented using one or more models, or a function may be implemented using one or more models, or a function may be implemented using one or more information processing methods outside of a model.

[0058] In some examples, the model parameters of the neural network are obtained by online training or offline training. For example, the neural network model parameters are trained by inputting at least one sample. The sample includes features and labels. In some examples, the feature is a first beam parameter information array, and the label is a second beam parameter information array. When training the network, the first beam parameter information array and the second beam parameter information array have a corresponding relationship, preferably a one-to-one corresponding relationship. During the network model deployment or testing phase, by inputting the first beam parameter information group into the network model to output a predicted second beam parameter information array, and comparing the predicted second beam parameter information array with the second beam parameter information array corresponding to the label, the prediction performance of the network can be known, and the neural network model parameters can be trained based on the loss function of the two.

[0059] In some examples, in order to better transmit data or signals, the base station or terminal needs to obtain measurement parameters, which may include channel state information or other parameters used to characterize the channel, wherein the channel state information may include at least one of the following: channel state information-reference signal resource indicator (CSI-RS Resource Indicator, CRI), synchronization signal block resource indicator (synchronization signals block resource indicator, SSBRI), layer 1 reference signal received power (L1reference signal received power, L1-RSRP or RSRP), differential RSRP (differential RSRP), layer 1 reference signal signal-to-interference noise ratio (L1signal-to-interference noise ratio, L1-SINR or SINR), differential L1-SINR (differential L1-SINR), reference signal received quality (reference signal received quality, RSRQ), L1-RSRQ, differential RSRQ, channel quality indicator (channel quality indicator, CQI), precoding matrix indicator (precoding matrix indicator, PMI), layer indicator (layer indicator, LI), rank indicator (rank indicator, RI), precoding information. Precoding information includes first-category precoding information, such as codebook-based precoding information. A precoding matrix indication is one type of codebook-based precoding information. Precoding information also includes non-codebook-based implementations, such as second-category precoding information. In one example, CSI that includes only first-category precoding information is referred to as first-category CSI. In another example, CSI that includes second-category precoding information is referred to as second-category CSI.

[0060] In some examples, channel information is information obtained based on a reference signal (e.g., CSI-RS) and used to describe the channel environment between communication nodes, such as a time-domain channel matrix or a frequency-domain channel matrix. In some examples, the channel information is a complex matrix, and the size of the channel matrix is ​​related to the number of transmit antennas Nt, the number of receive antennas Nr, and the resource elements (REs). For example, a physical resource block (PRB) contains at least one Nr*Nt channel matrix.

[0061] In the embodiments of the present disclosure, feedback CSI may also be referred to as transmission CSI or sending CSI, such as carrying channel state information on uplink transmission resources for feedback or transmission. The uplink transmission resources and the corresponding CSI are both indicated by a channel state information report. In one example, transmitting a CSI report refers to transmitting the content that needs to be transmitted as indicated in the CSI report, including but not limited to channel state information, where transmission includes sending or receiving, and may also be replaced by feedback or reception. In one example, transmitting a CSI report refers to transmitting the content that needs to be transmitted as indicated by the CSI report via uplink transmission resources, including but not limited to channel state information, where transmission includes sending or receiving, and may also be replaced by feedback or reception.

[0062] In some embodiments, the antenna is a physical antenna. In some examples, the antenna is a logical antenna. In some examples, the concepts of port and antenna are interchangeable. In some examples, the antenna is a transmitting antenna. In some examples, the antenna is a receiving antenna. In some examples, the antenna includes an antenna pair consisting of a transmitting antenna and a receiving antenna. In some examples, the antenna may be a uniform linear array. In some examples, the antenna is a uniform planar array, such as an array element / antenna comprising Ng rows and Mg columns, where Ng and Mg are positive integers. In some examples, the antenna is a uniform circular array. In some examples, the antenna may be a non-uniform linear array. In some examples, the antenna is a non-uniform planar array. In some examples, the antenna is a non-uniform circular array. In some examples, the antenna is a directional antenna, and in some examples, the antenna is an omnidirectional antenna. In some examples, the antenna is a dual-polarized antenna. In some examples, the antenna is a single-polarized antenna.

[0063] As shown in FIG2 , the present disclosure provides a method for sending reference signal configuration information, the method comprising the following steps:

[0064] S101: Generate reference signal configuration information.

[0065] The reference signal configuration information includes N reference signal patterns, and the N reference signal patterns correspond to M resource units, where N and M are integers greater than 1.

[0066] In some embodiments, the N reference signal patterns in the embodiments of the present disclosure may be understood as N types of reference signal patterns, N types of reference signal patterns, or other similar descriptions. Similarly, the M resource units in the embodiments of the present disclosure may also be understood as M types of resource units, M types of resource units, or other similar descriptions.

[0067] In some examples or embodiments, a reference signal pattern refers to a resource set of at least one of the time domain, frequency domain, spatial domain, and code domain resources used to transmit a reference signal. For example, a time domain and frequency domain resource set, that is, a set of all REs used to transmit a reference signal, can be understood as a set of time-frequency resource elements used to transmit or carry the reference signal, or a set of time domain symbol indexes and / or frequency domain subcarrier indexes of time-frequency REs in a frame structure. A reference signal pattern corresponds to a fixed set of REs, and the corresponding time domain position, frequency domain position, and code domain sequence are fixed.

[0068] Exemplarily, the first communication node is taken as a base station and the second communication node is taken as an example of a terminal. In addition, the reference signal provided in the present disclosure includes multiple types of reference signals, such as a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a paging reference signal (SRS), a synchronization signal block (SSB), etc. The technical solution provided in the present disclosure is described below using DMRS as an example. Usually, the first communication node can pre-configure a reference signal pattern (such as a DMRS pattern), that is, generate DMRS configuration information and send it to the second communication node, and the second communication node can then receive DMRS based on the DMRS pattern configured by the first communication node.

[0069] Exemplarily, two reference signal types are defined in NR, and each reference signal type includes multiple reference signal patterns. Typically, the first communication node can configure a reference signal pattern through high-layer signaling, and then indicate the port set used in the reference signal pattern based on physical layer signaling.

[0070] In addition, when only a front-loaded reference signal, such as a front-loaded demodulation reference signal (DMRS), is configured, the number of DMRS time-domain symbols may be 1 or 2. To accommodate different mobile speeds, the first communication node may further configure an additional DMRS (Additional DMRS). The total number of symbols for the front-loaded DMRS and Additional DMRS does not exceed 4. Furthermore, since a timeslot may contain 1-14 symbols, a DMRS start symbol may also be configured.

[0071] In some embodiments, any reference signal pattern among the N reference signal patterns is different from the other reference signal patterns.

[0072] In addition, at least two reference signal patterns among the multiple reference signal patterns differ in at least one of the following aspects: the time domain density of the CDM group corresponding to the reference signal pattern, the frequency domain density of the CDM group corresponding to the reference signal pattern, the number of reference signal symbols added to the reference signal pattern, the reference signal sequence corresponding to the reference signal pattern, the orthogonal cover code (OCC) of the CDM group corresponding to the reference signal pattern, the starting symbol index corresponding to the reference signal pattern, the index set corresponding to the reference signal pattern, the starting subcarrier index corresponding to the reference signal pattern, and the subcarrier index set corresponding to the reference signal pattern. The above-mentioned index can be an identifier, an indication, or a combination of indices, etc., and can also be referred to as a position. For example, the starting symbol index can be a symbol starting position, the index set can be a symbol position set, the starting subcarrier index can be a subcarrier starting position, the subcarrier index set can be a subcarrier position set, etc.

[0073] Exemplarily, to adapt to the channel characteristics of resources in at least one of different space, time, frequency, and code domains, a first communication node may configure N different reference signal patterns (e.g., DMRS patterns) for the same second communication node. Accordingly, the second communication node receives the N reference signal pattern configuration information and, based on the N reference signal pattern configuration information, determines a reference signal pattern on resources in at least one of the space, time, frequency, and code domains for reference signal reception to estimate or measure the channel. This allows for demodulation of the received data or signaling.

[0074] The N different reference signal patterns include but are not limited to at least one of the following:

[0075] Among the N different reference signal patterns, there are at least two reference signal patterns corresponding to CDM groups with different time domain densities. For example, the CDM groups of the two different reference signal patterns include different numbers of time domain symbols.

[0076] Among the N different reference signal patterns, there are at least two reference signal patterns corresponding to CDM groups with different frequency domain densities. For example, the CDM groups of the two different reference signal patterns include different numbers of frequency domain subcarriers.

[0077] Among the N different reference signal patterns, at least two reference signal patterns correspond to different numbers of added reference signal (e.g., Additional DMRS) symbols. For example, one pattern has one added reference signal, e.g., DMRS symbol, i.e., the number of Additional DMRS symbols is 1, and the other pattern has two added DMRS symbols, i.e., the number of Additional DMRS symbols is 2.

[0078] At least two of the N different reference signal patterns correspond to different reference signal sequences, or the reference signal sequences of the two reference signal patterns have different initial values. In one example, at least two of the N different reference signal patterns correspond to different OCC codes of the CDM groups.

[0079] At least two of the N different reference signal patterns have different symbol starting positions or different symbol positions. For example, at least two of the N different DMRS patterns have different subcarrier starting positions or different subcarrier positions. The above-mentioned position may be an index, an identifier, an indication, or a combination of indexes.

[0080] In one example, taking the reference signal as DMRS as an example, based on the channel estimation algorithm used by the second communication node, such as the terminal, the first communication node can, for example, configure a low-density DMRS pattern. Among them, the low-density DMRS pattern can have multiple implementation forms. For example, a partial subset of REs in a CDM Group can be used as a CDM group. Exemplarily, as shown in Figure 3, for the case of single-symbol DMRS type1, a CDM group includes 6*S REs. In a low-density CDM group, a CDM group may only include 3*S, 2*S, or 1*S REs. For the case of single-symbol DMRS type2, a CDM group includes 4*S REs. In a low-density CDM group, a CDM group may only include 2*S REs or only 1*S REs. As shown in Figure 4, CDM group 40, CDM group 41, CDM group 42, CDM group 43, CDM group 44, and CDM group 45 all include 2*S REs. As shown in Figure 5, for the case of DMRS type 2 with two symbols, CDM groups 50, 51, and 52 each include 4*S REs. S is an integer such as 1, 2, 3, or 4, representing the number of symbols corresponding to a CDM group. For the case of additional DMRS symbols, S can also be the number of additional DMRS symbols. The terminal receives the DMRS configuration and receives the DMRS on the REs where the DMRS pattern resides, thereby obtaining an estimate or measurement of the channel and demodulating the received data or signaling.

[0081] In some embodiments, the reference signal configuration information further includes signaling for indicating a correspondence between the N reference signal patterns and the M resource units.

[0082] In some embodiments, the correspondence between the reference signal pattern and the resource unit is determined according to higher layer signaling and / or physical layer signaling.

[0083] In one example, the higher layer signaling and / or the physical layer signaling may include M indicator values, each indicator value corresponding to a resource unit, and used to indicate the reference signal pattern corresponding to the resource unit. In another example, the higher layer signaling and / or the physical layer signaling includes N indicator values, each indicator value corresponding to a reference signal pattern, and used to indicate the resource unit corresponding to the reference signal pattern.

[0084] In some embodiments, the above-mentioned higher-layer signaling and / or physical layer signaling includes one of the following: a bitmap, a list, an array, or a table. That is, the correspondence between the reference signal pattern and the resource unit is indicated by one of the following: a bitmap, a list, an array, or a table. In some examples, the above-mentioned higher-layer signaling and / or physical layer signaling is referred to as first higher-layer signaling and / or physical layer signaling.

[0085] Exemplarily, taking high-layer signaling and / or physical layer signaling as a list as an example, the list includes M indicator values, each indicator value corresponds to a resource unit (or corresponds to a layer group, a time domain unit group, a frequency domain unit group, etc.) or a channel characteristic, which is used to indicate the reference signal pattern (or reference signal pattern identifier / index) corresponding to the resource unit. That is, the i-th indicator value corresponds to the i-th resource unit, i=1,…,N. Thus, the length of the list can be determined based on the number of channel-to-feature types in multiple resource units. Furthermore, based on the list, the reference signal pattern corresponding to the resource unit can also be determined based on the value of the indicator value corresponding to the resource unit.

[0086] Alternatively, the list includes N indicator values, each indicator value corresponds to a reference signal pattern (or reference signal pattern identifier / index), which is used to indicate the resource unit (or corresponding to a layer group, a time domain unit group, a frequency domain unit group, etc.) or channel characteristics corresponding to the reference signal pattern corresponding to the indicator value. That is, the i-th indicator value corresponds to the i-th reference signal pattern, i=1,…,N. Thus, the length of the list can be determined based on the number of reference signal patterns. Furthermore, based on the list, the value corresponding to the resource unit can also be determined first, and then the indicator value corresponding to the resource unit and the reference signal pattern corresponding to the indicator value can be determined based on the value.

[0087] It should be understood that the descriptions in this embodiment and subsequent embodiments or examples are merely exemplary. In addition to the lists in the above description, the lists can also be replaced with arrays, tables, bitmaps, etc., which are not listed one by one here.

[0088] In some embodiments, the N reference signal patterns correspond to M resource units, including: the reference signal configuration information includes a field for indicating a correspondence between the N reference signal patterns and the M resource units.

[0089] In some embodiments, the resource unit includes at least one of the following: layer, codeword, frequency domain unit, time domain unit, transmission type, number of repeated transmissions, model, model indication, function, function indication.

[0090] Furthermore, the N reference signal patterns correspond to M resource units, including one of the following: N reference signal patterns correspond to M layers, N reference signal patterns correspond to M codewords, N reference signal patterns correspond to M frequency domain units, N reference signal patterns correspond to M time domain units, N reference signal patterns correspond to M transmission types, N reference signal patterns correspond to M repeated transmission times, N reference signal patterns correspond to M models or model indications, and N reference signal patterns correspond to M functions or function indications.

[0091] Example 1: N reference signal patterns correspond to M layers, wherein the N layer groups are determined based on the M layers, and each layer group includes at least one layer, for example, the M layers are divided into N layer groups.

[0092] Exemplarily, the first layer group consists of odd-numbered layers, and the second layer group consists of even-numbered layers, wherein the first reference signal pattern corresponds to the odd-numbered layers, and the second reference signal pattern corresponds to the even-numbered layers.

[0093] It should be noted that the second communication node can receive multiple data streams on the same time-frequency resources or at least partially the same time-frequency resources. The multiple data streams may include data of multiple layers, and one data stream may correspond to one layer. The multiple data streams may come from the same first communication node or multiple collaborative first communication nodes, such as multiple collaborative base stations. When multiple first communication nodes serve one second communication node, each first communication node may send at least one data stream to the second communication node. Alternatively, a first communication node may send multiple data streams to the second communication node. The multiple data streams received by the second communication node may correspond to one or more data blocks or one or more codewords, or one data stream may correspond to one layer. Exemplarily, the first communication node may be configured with two different DMRS patterns, and when the number of layers that need to be transmitted simultaneously is greater than or equal to 2, one DMRS pattern corresponds to at least one layer.

[0094] In some embodiments, the correspondence between the reference signal pattern and the layer group, or the mapping relationship, may be pre-set, default, or agreed upon between the terminal and the base station, or the correspondence may be indicated by high-layer signaling and / or physical layer signaling. Exemplarily, in the case of K different reference signal patterns, K layer groups may be divided, each layer group including at least one layer for transmitting data. Furthermore, the correspondence between K different DMRS patterns and K layer groups, which may be pre-set, default, or agreed upon between the terminal and the base station, or may be indicated by high-layer signaling and / or physical layer signaling, may also be determined. Wherein, K is greater than or equal to 2. In one example, the reference signal configuration information includes signaling for indicating the correspondence between the N reference signal patterns and the M resource units.

[0095] Exemplarily, when the value of K is 2, the correspondence between K=2 different reference signal patterns (eg, DMRS patterns) and K=2 layer groups may include at least one of the following:

[0096] The first layer Layer 1 included in the first layer group of K=2 layer groups corresponds to the first reference signal pattern DMRS pattern 1, and the second layer Layer 2 included in the second layer group corresponds to the second reference signal pattern DMRS pattern 2. That is, the first layer group of K=2 layer groups corresponds to the first reference signal pattern DMRS pattern 1, and the second layer group corresponds to the second reference signal pattern DMRS pattern 2.

[0097] The first layer Layer 1 and the second layer Layer 2 included in the first layer group of K=2 layer groups correspond to the first reference signal pattern DMRS pattern 1, and the third layer Layer 3 and the fourth layer Layer 4 included in the second layer group correspond to the second reference signal pattern DMRS pattern 2. That is, the first layer group of K=2 layer groups corresponds to the first reference signal pattern DMRS pattern 1, and the second layer group corresponds to the second reference signal pattern DMRS pattern 2.

[0098] The odd-numbered layers included in the first layer group of K=2 layer groups, that is, the layers with odd-numbered layer indices, correspond to the first reference signal pattern DMRS pattern 1, and the even-numbered layers included in the second layer group, that is, the layers with even-numbered layer indices, correspond to the second reference signal pattern DMRS pattern 2. That is, the first layer group of K=2 layer groups corresponds to the first reference signal pattern DMRS pattern 1, and the second layer group corresponds to the second reference signal pattern DMRS pattern 2.

[0099] The layer corresponding to codeword 1 included in the first layer group of K=2 layer groups corresponds to the first reference signal pattern DMRS pattern 1, and the layer corresponding to codeword 2 included in the second layer group corresponds to the second reference signal pattern DMRS pattern 2. That is, the first layer group of K=2 layer groups corresponds to the first reference signal pattern DMRS pattern 1, and the second layer group corresponds to the second reference signal pattern DMRS pattern 2.

[0100] The layer of the layer indicator (LI) included in the first layer group of K=2 layer groups corresponds to the first reference signal pattern DMRS pattern 1, and the other layers, that is, the layers included in the second layer group, correspond to the second reference signal pattern DMRS pattern 2. That is, the first layer group of K=2 layer groups corresponds to the first reference signal pattern DMRS pattern 1, and the second layer group corresponds to the second reference signal pattern DMRS pattern 2.

[0101] It should be understood that this is only an example, and the correspondence between the layer groups and the reference signal patterns can also be implemented in other similar ways, which are not listed one by one.

[0102] It should be noted that the correspondence between the above-mentioned layer groups and reference signal patterns can also be based on high-layer or physical layer signaling indications. For example, the correspondence between reference signal patterns (e.g., DMRS patterns) and layers can be indicated by a list, which may include K indicator values, each indicator value corresponding to a layer, and the value of the i-th indicator value corresponding to the DMRS pattern of the i-th layer. Exemplarily, the value of the i-th indicator value is a first value, and the corresponding layer can correspond to the first reference signal pattern DMRS pattern 1. The i-th indicator value is a second value, and the corresponding layer can correspond to the second reference signal pattern DMRS pattern 2, i=1, ..., K, the first value and the second value are two different values, which can be integers or Boolean values, such as the first value is 0 and the second value is a non-zero value, the first value is TRUE, and the second value is FALSE. Thus, the second communication node can determine the DMRS pattern on each layer based on the default, agreed, or signaled correspondence between the layer and the DMRS pattern, and receive the DMRS on the layer according to the determined DMRS pattern to estimate or measure the channel. The received data or signaling is thereby demodulated. The list here can be replaced with an array, a table, a bitmap, etc. In some examples, the correspondence between the layer group and the reference signal pattern is included in the reference signal configuration information.

[0103] Accordingly, for uplink data or channel transmission, the second communication node can send reference signals of different patterns on different layers or layer groups and transmit data or signaling on different layers. The first communication node can receive reference signals of different patterns on different layers or layer groups.

[0104] Example 2: N reference signal patterns correspond to M frequency domain units, wherein the N frequency domain unit groups are determined based on the M frequency domain units, and the frequency domain unit group includes at least one frequency domain unit, for example, the M frequency domain units are divided into N frequency domain unit groups.

[0105] Exemplarily, the first frequency domain unit group consists of odd frequency domain units, and the second frequency domain unit group consists of even frequency domain units. The third reference signal pattern corresponds to the odd frequency domain units, and the fourth reference signal pattern corresponds to the even frequency domain units.

[0106] In the case where the second communication node is configured with multiple frequency domain units, for example, the second communication node is configured with multiple physical resource blocks (PRBs). In addition, one or more first communication nodes serve the same second communication node. Exemplarily, the second communication node can be configured with multiple different reference signal patterns (e.g., DMRS patterns), and the number of PRBs that need to be transmitted simultaneously is greater than or equal to 2, where one DMRS pattern corresponds to at least one PRB.

[0107] It should be noted that the number of PRBs corresponding to each of the above-mentioned PRB groups may be different. For example, a PRB group includes 2 PRBs, and a PRB group includes 4 PRBs. For example, the second communication node can use compressed sensing technology to perform channel estimation. The first communication node can divide the PRBs into multiple groups according to the frequency domain fading degree of the channel, and the frequency domain fading degree of the channel in each PRB group meets the preset requirements, and then notify the second communication node of the PRB grouping situation through signaling. The first communication node configures different reference signal patterns (such as DMRS patterns) in different PRB groups to adapt to the channel characteristics in the PRB group. Thereby, the second communication node determines the DMRS pattern on each PRB group according to the correspondence between the different DMRS patterns and PRB groups configured by the base station, and receives the DMRS on the PRB group according to the DMRS pattern.

[0108] Among them, the correspondence between the PRB group and the reference signal pattern may also be pre-set, default set, or agreed upon between the terminal and the base station. Exemplarily, when the number N of PRB groups is 2, the correspondence between the PRB group and the reference signal pattern (e.g., DMRS pattern) may include: PRB group 1 corresponds to DMRS pattern 1, and PRB group 2 corresponds to DMRS pattern 2. Among them, DMRS pattern 1 may also be the third reference signal pattern in the embodiment of the present disclosure, and DMRS pattern 2 may also be the fourth DMRS pattern in the embodiment of the present disclosure. Among them, the third reference signal pattern corresponds to an odd-numbered frequency domain unit, and the fourth reference signal pattern corresponds to an even-numbered frequency domain unit. For example, the PRB group index is an odd-numbered corresponding DMRS pattern 1, and the PRB group index is an even-numbered corresponding DMRS pattern 2.

[0109] It should be understood that this is only an example, and the correspondence between the PRB group and the reference signal pattern can also have other similar implementation methods, which are not listed one by one.

[0110] Alternatively, the correspondence between the reference signal pattern and the PRB group can also be indicated by a list. The list may include N indicator values, each indicator value corresponds to a PRB group, and the i-th indicator value corresponds to the reference signal pattern of the i-th PRB group. Exemplarily, taking the reference signal pattern as a DMRS pattern as an example, the i-th indicator value is the first value, and its corresponding PRB group can correspond to DMRS pattern 1. The i-th indicator value is the second value, and its corresponding PRB group can correspond to DMRS pattern 2, i=1,...,K, the first value and the second value are two different values, which can be integers or Boolean values, such as the first value is 0, the second value is a non-zero value, the first value is TRUE, and the second value is FALSE. Thus, the second communication node can determine the DMRS pattern on each PRB group based on the default, agreed, or signaling-indicated correspondence between the PRB group and the DMRS pattern, and receive the DMRS on the PRB group according to the determined DMRS pattern to estimate or measure the channel. Thus, the received data or signaling is demodulated. The list here can be replaced by an array, a table, a bitmap, etc. In some examples, the correspondence between the layer groups and the reference signal patterns is included in the reference signal configuration information.

[0111] Accordingly, for uplink data or channel transmission, the second communication node can send reference signals of different patterns on different PRB groups and transmit data or signaling on different PRB groups. The first communication node can receive reference signals of different patterns on different PRB groups.

[0112] Example 3: N reference signal patterns correspond to M time domain units. The N reference signal patterns correspond to N time domain unit groups, and the N time domain unit groups are determined based on the M time domain units. Furthermore, the time domain unit group includes at least one time domain unit, for example, the M time domain units are divided into N time domain unit groups.

[0113] Exemplarily, the first time domain unit group consists of odd time domain units, and the second time domain unit group consists of even time domain units. The fifth reference signal pattern corresponds to odd time domain units, and the sixth reference signal pattern corresponds to even time domain units.

[0114] The correspondence between the reference signal pattern and the time domain unit may be pre-set, defaulted, or agreed upon between the terminal and the base station, or the correspondence may be indicated through high-layer signaling and / or physical layer signaling.

[0115] In some embodiments, different time slots correspond to different reference signal patterns.

[0116] Example 4: N reference signal patterns correspond to M transmission types. The N reference signal patterns correspond to N transmission type groups, and the N transmission type groups are determined based on the M transmission types. For example, the M transmission types are divided into N transmission type groups, and the transmission type group includes at least one transmission type from an initial transmission and an i-th retransmission, where i = 1, ..., C, where C is the maximum number of retransmissions and is the i-th retransmission of a Hybrid Automatic Repeat Request (HARQ).

[0117] Exemplarily, the seventh reference signal pattern corresponds to the first transmission of data, and the eighth reference signal pattern corresponds to repeated transmission of data.

[0118] In some embodiments, the repeated transmissions include a first repeated transmission, a second repeated transmission, a third repeated transmission, a fourth repeated transmission, and the like.

[0119] In some embodiments, different HARQ retransmission orders have different reference signal patterns. Exemplarily, N reference signal patterns correspond to N retransmission order groups, where each retransmission order group includes at least one retransmission order. The ninth reference signal pattern corresponds to odd-numbered data retransmissions, while the tenth reference signal pattern corresponds to even-numbered data retransmissions. For ease of description, the first transmission is referred to as retransmission 0.

[0120] The retransmission can utilize Hybrid Automatic Repeat reQuest (HQRQ), a technology that combines forward error correction (FEC) and automatic repeat request (ARQ). When the receiving end detects an error in the received data, it sends a negative acknowledgement (NACK) to the transmitting end. The transmitting end, upon receiving the NACK, can determine based on the NACK that the data received by the receiving end is erroneous and retransmit the data at an appropriate time.

[0121] Furthermore, the data for the initial transmission and different retransmissions can come from the same transport block (TB), and the redundancy versions (RVs) for the initial transmission and different retransmissions after channel coding can be different. In some examples, the redundancy versions (RVs) for the data for the initial transmission and different retransmissions after channel coding are the same. Generally, the RV can be a channel version {0, 1, 2, 3}. Furthermore, the initial transmission and different retransmissions can also correspond to different reference signal patterns.

[0122] In some embodiments, the density of CDM groups corresponding to the reference signal pattern corresponding to a retransmission (non-initial transmission) is greater than the density of CDM groups corresponding to the reference signal pattern corresponding to the initial transmission, including time domain density and / or frequency domain density. In one example, the density of CDM groups corresponding to the reference signal pattern corresponding to the retransmission is determined based on the accuracy of the initial transmission. For example, if the accuracy of the initial transmission is within a preset threshold, the density of CDM groups for the retransmission can be lower; otherwise, a higher density can be selected.

[0123] In some embodiments, the correspondence between the transmission type and the reference signal pattern, or mapping relationship, may be pre-set, defaulted, or agreed upon between the terminal and the base station, or the correspondence may be indicated via higher layer signaling and / or physical layer signaling. The transmission type includes at least: first transmission, first repeated transmission, second repeated transmission, third repeated transmission, fourth repeated transmission, etc.

[0124] In a specific example, one or more first communication nodes can serve the same second communication node, and the first communication node can be configured with a variety of different reference signal patterns. Among them, the first transmission and different retransmissions correspond to different reference signal patterns. In some examples, there can be K different reference signal patterns (such as DMRS patterns), and the multiple transmission types of the transmitted data are divided into K transmission type groups, each transmission type group includes at least one transmission (first transmission, or i-th retransmission, i=1,..., C). Furthermore, the correspondence between the transmission type and the reference signal pattern can be determined according to the above-mentioned pre-set, default setting or agreed setting between the terminal and the base station, or by means of high-layer signaling and / or physical layer signaling. Among them, K is greater than or equal to 2.

[0125] Exemplarily, taking the reference signal pattern as a DMRS pattern, when the value of K is 2, the correspondence between the transmission type and the DMRS pattern may include: the first transmission corresponds to DMRS pattern 1, and the i-th retransmission corresponds to DMRS pattern 2. The value of i is 1, 2, 3, 4 or other possible number of retransmissions. DMRS pattern 1 may also be the seventh DMRS pattern in the embodiment of the present disclosure, and DMRS pattern 2 may also be the eighth DMRS pattern in the embodiment of the present disclosure. Alternatively, the first transmission and the first repeated transmission correspond to DMRS pattern 1, and the second repeated transmission and the third repeated transmission correspond to DMRS pattern 2. It should be understood that this is only an example, and the correspondence between the transmission type and the DMRS pattern may also have other similar implementation methods, which are not listed one by one.

[0126] Alternatively, the correspondence between transmission types and reference signal patterns can also be indicated by a list. The list may include K indicator values, each indicator value corresponding to a transmission type group, and the i-th indicator value corresponding to the reference signal pattern of the i-th transmission type group. For example, taking the reference signal pattern as a DMRS pattern, the i-th indicator value is a first value, and its corresponding transmission type group may correspond to DMRS pattern 1. The i-th indicator value is a second value, and its corresponding transmission type group may correspond to DMRS pattern 2, i=1, ..., K, the first value and the second value are two different values, which can be integers or Boolean values, such as the first value is 0 and the second value is a non-zero value, the first value is TRUE, and the second value is FALSE. Thus, the second communication node can determine the DMRS pattern for each transmission type group based on the default, agreed, or signaled correspondence between the transmission type group and the DMRS pattern, and receive the DMRS for the transmission type group according to the determined DMRS pattern to estimate or measure the channel, thereby demodulating the received data or signaling. The list here can be replaced by an array, a table, a bitmap, etc. In some examples, the correspondence between the layer groups and the reference signal patterns is included in the reference signal configuration information.

[0127] Accordingly, for uplink data or channel transmission, the second communication node can send reference signals of different patterns on different transmission type groups, transmit data or signaling on different transmission type groups, and the first communication node can receive reference signals of different patterns on different transmission type groups.

[0128] Example 5: N reference signal patterns correspond to M repetition transmission times. Different repetition transmission times have different reference signal patterns. Exemplarily, the N reference signal patterns correspond to N repetition transmission time groups, where each repetition transmission time group includes at least one repetition transmission time. For example, M repetition transmission times are divided into N repetition transmission time groups.

[0129] The ninth reference signal pattern corresponds to odd-numbered repetitions of data transmission, and the tenth reference signal pattern corresponds to even-numbered repetitions of data transmission.

[0130] The repetition transmission is an important technology for improving the accuracy of data or signaling transmission. The data or signaling can be repetition transmitted without the need for the receiving end to feed back ACK / NACK.

[0131] Furthermore, the data of the K repeated transmissions may come from the same transmission block, and the redundancy versions (RVs) after channel coding corresponding to different repeated transmissions may be different or the same.

[0132] The correspondence between the i-th repetition transmission and the reference signal pattern, or the mapping relationship, can be pre-set, default, or agreed upon between the terminal and the base station, or the correspondence can be indicated by high-layer signaling and / or physical layer signaling. In a specific example, the first communication node can configure a plurality of different reference signal patterns. One reference signal pattern corresponds to at least one repetition transmission. Moreover, in some examples, there can be K different reference signal patterns, and the different repetition transmissions are divided into K repetition transmission index groups according to the repetition transmission index, and each repetition transmission index group includes at least one repetition transmission index. Furthermore, the correspondence between the K repetition transmission index groups and the reference signal pattern can be determined according to the above-mentioned pre-set, default, or agreed upon setting between the terminal and the base station, or by high-layer signaling and / or physical layer signaling. Wherein, K is greater than or equal to 2.

[0133] For example, taking the reference signal pattern as a DMRS pattern, when the value of K is 2, the correspondence between the repetition transmission index group and the DMRS pattern can include any of the following: the first and second repetition transmissions correspond to DMRS pattern 1, and the third and fourth repetition transmissions correspond to DMRS pattern 2. The first repetition transmission corresponds to DMRS pattern 1, and the second repetition transmission corresponds to DMRS pattern 2. Odd-numbered repetition transmission indices correspond to DMRS pattern 1, and even-numbered repetition transmission indices correspond to DMRS pattern 2. It should be understood that this is merely an example, and the correspondence between the repetition transmission index group and the DMRS pattern can also be implemented in other similar ways, which are not listed here.

[0134] Alternatively, the correspondence between the repetition transmission index group and the reference signal pattern can also be indicated by a list. The list may include K indicator values, each indicator value corresponds to a repetition transmission index group, and the i-th indicator value corresponds to the reference signal pattern of the i-th repetition transmission index group. For example, taking the reference signal pattern as a DMRS pattern, the i-th indicator value is the first value, and its corresponding repetition transmission index group can correspond to DMRS pattern 1. The i-th indicator value is the second value, and its corresponding repetition transmission index group can correspond to DMRS pattern 2, i=1,...,K, the first value and the second value are two different values, which can be integers or Boolean values, such as the first value is 0 and the second value is a non-zero value, the first value is TRUE, and the second value is FALSE. Thus, the second communication node can determine the reference signal pattern on each repetition transmission index group based on the default, agreed, or signaled correspondence between the repetition transmission index group and the reference signal pattern, and receive the reference signal on the repetition transmission index group according to the determined reference signal pattern to estimate or measure the channel. This can thereby demodulate the received data or signaling. The list here can be replaced by an array, a table, a bitmap, etc. In some examples, the correspondence between the layer groups and the reference signal patterns is included in the reference signal configuration information.

[0135] Accordingly, for uplink data or channel transmission, the second communication node may send reference signals of different patterns during repeated transmissions corresponding to different repetition index groups, and transmit data or signaling during repeated transmissions corresponding to different repetition index groups. The first communication node may receive reference signals of different patterns during repeated transmissions corresponding to different repetition index groups.

[0136] Example 6: N reference signal patterns correspond to M models or model indicators. The N reference signal patterns correspond to N model groups or model indicator groups, and the N model groups are determined based on the M models. That is, the N reference signal patterns correspond to M models. The model group includes at least one model, for example, the M models are divided into N model groups. Alternatively, the N model indicator groups are determined based on the M model indicators, and the model indicator groups include at least one model indicator, for example, the M model indicators are divided into N model indicator groups.

[0137] In one example, the eleventh reference signal pattern corresponds to the first model group, and the twelfth reference signal pattern corresponds to the second model group. The model group includes at least one model.

[0138] In some embodiments, the correspondence, or mapping, between the model and the reference signal pattern may be pre-set, default, or agreed upon between the terminal and the base station, or the correspondence may be indicated via higher layer signaling and / or physical layer signaling. The following describes the application embodiments using a model as an example, wherein the model may also be a function, and the model indication may also be a function indication. The indication may also be an index, an identifier, etc.

[0139] In a specific example, one or more first communication nodes can serve the same second communication node, and the first communication node can be configured with multiple different reference signal patterns. Among them, one reference signal pattern corresponds to at least one model. In some examples, there can be K different reference signal patterns, and the multiple models for information processing are divided into K model groups, each model group including at least one model. Furthermore, the correspondence between the model and the reference signal pattern can be determined according to the above-mentioned pre-set, default setting, or agreed setting between the terminal and the base station, or through high-layer signaling and / or physical layer signaling. Among them, K is greater than or equal to 2.

[0140] For example, taking the reference signal pattern as a DMRS pattern, when the value of K is 2, the correspondence between the model and the DMRS pattern may include: model group 1 corresponds to DMRS pattern 1, and model group 2 corresponds to DMRS pattern 2. For example, model group indexes with odd numbers correspond to DMRS pattern 1, and model group indexes with even numbers correspond to DMRS pattern 2. It should be understood that this is merely an example, and the correspondence between the model and the DMRS pattern may also have other similar implementations, which are not listed here.

[0141] Alternatively, the correspondence between the model and the reference signal pattern can also be indicated by a list. The list may include K indicator values, with each bit corresponding to a model group, and the i-th indicator value corresponding to the reference signal pattern of the i-th model group. For example, taking the reference signal pattern as a DMRS pattern, the i-th indicator value is the first value, and its corresponding model group can correspond to DMRS pattern 1. The i-th indicator value is the second value, and its corresponding model group can correspond to DMRS pattern 2, i=1, ..., K, the first value and the second value are two different values, which can be integers or Boolean values, such as the first value is 0 and the second value is a non-zero value, the first value is TRUE, and the second value is FALSE. Thus, the second communication node can determine the DMRS pattern on each model group based on the default, agreed, or signaled correspondence between the model group and the DMRS pattern, and receive the DMRS on the model group according to the determined DMRS pattern to estimate or measure the channel. This allows the received data or signaling to be demodulated. The list here can be replaced with an array, table, bitmap, or other form. In some examples, the correspondence between layer groups and reference signal patterns is included in the reference signal configuration information.

[0142] Accordingly, for uplink data or channel transmission, the second communication node can send reference signals of different patterns on different model groups, transmit data or signaling on different model groups, and the first communication node can receive reference signals of different patterns on different model groups.

[0143] Example 7: N reference signal patterns correspond to M functions or function indications, including: N reference signal patterns correspond to N function groups or function indication groups, the N function groups are determined based on the M functions, for example, the M functions are divided into N function groups, the function groups include at least one function, and the N function indication groups are determined based on the M function indications, the function indication group includes at least one function indication, for example, the M function indications are divided into N function indication groups.

[0144] In one example, the eleventh reference signal pattern corresponds to a first function, the twelfth reference signal pattern corresponds to a second function, and the function group includes at least one function.

[0145] In some embodiments, the correspondence between the function and the reference signal pattern, or mapping relationship, may be pre-set, default, or agreed upon between the terminal and the base station, or the correspondence may be indicated through higher layer signaling and / or physical layer signaling. For detailed examples of the functions, refer to the description of Example 6 above and will not be repeated here.

[0146] S102: Send reference signal configuration information.

[0147] Exemplarily, the first communication node may send configuration information including N reference signal patterns to the second communication node. The N reference signal patterns correspond to M resource units, where N and M are integers greater than 1. Accordingly, the second communication node receives the reference signal configuration information and receives a reference signal on the resource element (RE) where the reference signal pattern resides, thereby obtaining an estimate or measurement of the channel and demodulating the received data or signaling.

[0148] In one example, taking the reference signal pattern as a DMRS pattern as an example, the DMRS configuration information of the N DMRS patterns sent by the first communication node includes the configuration information of the type 1 pattern. Among them, the type 1 pattern can be a DMRS pattern based on interleaved frequency domain multiplexing (IFDM), which can be called DMRS type 1 (DMRS type 1). Moreover, as shown in FIG6 , the type 1 pattern supports a maximum of 4 ports in one DMRS symbol, including port P0, port P1, port P2 and port P3. As shown in FIG7 , in the case of 2 adjacent DMRS symbols, a maximum of 8 ports are supported, including port P0, port P1, port P2, port P3, port P4, port P5, port P6 and port P7. DMRS type 1 includes at most 2 CDM groups, each CDM group is located on a different subcarrier, the ports between different CDM groups are distinguished by frequency domain resources, and the ports in the same DMRS group occupy the same time-frequency resources. Different codes may be used for differentiation, for example, different CS (cyclic shift) or orthogonal cover code sequences may be used for differentiation.

[0149] In another example, taking the reference signal pattern as a DMRS pattern as an example, the DMRS configuration information of the N types of DMRS patterns sent by the first communication node includes configuration information of a type 2 pattern. Among them, the type 2 pattern can be a DMRS pattern based on a frequency division orthogonal cover code, which can be called DMRS type 2 (DMRS type 2). As shown in Figure 8, DMRS type 2 supports a maximum of 6 ports in one DMRS symbol at most, including port P0, port P1, port P2, port P3, port P4 and port P5. As shown in Figure 9, DMRS type 2 supports a maximum of 12 ports in 2 adjacent DMRS symbols, including port P0, port P1, port P2, port P3, port P4, port P5, port P6, port P7, port P8, port P9, port P10 and port P11. In addition, DMRS type 2 includes up to 3 CDM groups, each CDM group is located on a different subcarrier, and the ports between different CDM groups are distinguished by frequency domain resources, while the ports in the same DMRS group occupy the same time-frequency resources and are distinguished by different codes, such as different CS or OCC sequences.

[0150] In some embodiments, the reference signal configuration information is included in at least one of RRC signaling, MAC CE, or DCI.

[0151] Based on the technical solution provided in the present disclosure, a suitable reference signal pattern can be selected from a plurality of different reference signal patterns based on different channel characteristics or resource units, so that the corresponding reference signal is more suitable for the current resource unit, thereby enabling a more flexible configuration of the reference signal pattern based on this technical solution.

[0152] In some embodiments, the present disclosure further provides a method for receiving reference signal configuration information, as shown in FIG10 , the method including:

[0153] S201. Receive reference signal configuration information, where the reference signal configuration information includes N reference signal patterns, and the N reference signal patterns correspond to M resource units.

[0154] Wherein, N and M are integers greater than 1.

[0155] In some embodiments, the N reference signal patterns in the embodiments of the present disclosure may be understood as N types of reference signal patterns, N types of reference signal patterns, or other similar descriptions. Similarly, the M resource units in the embodiments of the present disclosure may also be understood as M types of resource units, M types of resource units, or other similar descriptions.

[0156] In some examples or embodiments, a reference signal pattern (reference signal pattern) refers to a resource set of at least one of the time domain, frequency domain, spatial domain, and code domain resources used to transmit a reference signal. For example, a time domain and frequency domain resource set, that is, a set of all REs used to transmit a reference signal, can be understood as a set of time-frequency resource elements used to transmit or carry the reference signal, or a set of time domain symbol indexes and / or frequency domain subcarrier indexes of time-frequency REs in a frame structure. A reference signal pattern corresponds to a fixed set of REs, and the corresponding time domain position, frequency domain position, and code domain sequence are fixed. For example, the first communication node is taken as a base station and the second communication node is taken as a terminal. Usually, the first communication node can pre-configure a reference signal pattern such as a DMRS pattern, that is, generate DMRS configuration information and send it to the second communication node, and the second communication node can then receive DMRS based on the DMRS pattern configured by the first communication node.

[0157] In some embodiments, any reference signal pattern among the N reference signal patterns is different from the other reference signal patterns.

[0158] In addition, at least two reference signal patterns among the multiple reference signal patterns differ in at least one of the following aspects: the time domain density of the CDM group corresponding to the reference signal pattern, the frequency domain density of the CDM group corresponding to the reference signal pattern, the number of reference signal symbols added to the reference signal pattern, the reference signal sequence corresponding to the reference signal pattern, the orthogonal cover code (OCC) of the CDM group corresponding to the reference signal pattern, the starting symbol index corresponding to the reference signal pattern, the index set corresponding to the reference signal pattern, the starting subcarrier index corresponding to the reference signal pattern, and the subcarrier index set corresponding to the reference signal pattern. The above-mentioned index can be an identifier, an indication, or a combination of indices, etc., and can also be referred to as a position. For example, the starting symbol index can be a symbol starting position, the index set can be a symbol position set, the starting subcarrier index can be a subcarrier starting position, the subcarrier index set can be a subcarrier position set, etc.

[0159] In some embodiments, the reference signal configuration information further includes signaling for indicating a correspondence between the N reference signal patterns and the M resource units.

[0160] In some embodiments, the correspondence between the reference signal pattern and the resource unit is determined according to higher layer signaling and / or physical layer signaling.

[0161] In one example, the higher layer signaling and / or the physical layer signaling may include M indicator values, each indicator value corresponding to a resource unit, and used to indicate the reference signal pattern corresponding to the resource unit. In another example, the higher layer signaling and / or the physical layer signaling includes N indicator values, each indicator value corresponding to a reference signal pattern, and used to indicate the resource unit corresponding to the reference signal pattern.

[0162] In some embodiments, the above-mentioned high-layer signaling and / or physical layer signaling includes one of the following: a bitmap, a list, an array, or a table. That is, the correspondence between the reference signal pattern and the resource unit is indicated by one of the bitmap, list, array, or table.

[0163] Exemplarily, taking high-layer signaling and / or physical layer signaling as a list as an example, the list includes M indicator values, each indicator value corresponds to a resource unit (or corresponds to a layer group, a time domain unit group, a frequency domain unit group, etc.) or a channel characteristic, which is used to indicate the reference signal pattern (or reference signal pattern identifier / index) corresponding to the resource unit. That is, the i-th indicator value corresponds to the i-th resource unit, i=1,…,N. Thus, the length of the list can be determined based on the number of channel-to-feature types in multiple resource units. Furthermore, based on the list, the reference signal pattern corresponding to the resource unit can also be determined based on the value of the indicator value corresponding to the resource unit.

[0164] Alternatively, the list includes N indicator values, each indicator value corresponds to a reference signal pattern (or reference signal pattern identifier / index), which is used to indicate the resource unit (or corresponding to a layer group, a time domain unit group, a frequency domain unit group, etc.) or channel characteristics corresponding to the reference signal pattern corresponding to the indicator value. That is, the i-th indicator value corresponds to the i-th reference signal pattern, i=1,…,N. Thus, the length of the list can be determined based on the number of reference signal patterns. Furthermore, based on the list, the value corresponding to the resource unit can also be determined first, and then the indicator value corresponding to the resource unit and the reference signal pattern corresponding to the indicator value can be determined based on the value.

[0165] It should be understood that the description in this embodiment is merely exemplary. In addition to the list in the above description, it can also be replaced by arrays, tables, bitmaps, etc., which are not listed here one by one.

[0166] In some embodiments, the N reference signal patterns correspond to M resource units, including: the reference signal configuration information includes a field for indicating a correspondence between the N reference signal patterns and the M resource units.

[0167] In some embodiments, the resource unit includes at least one of the following: layer, codeword, frequency domain unit, time domain unit, transmission type, number of repeated transmissions, model, model indication, function, function indication.

[0168] Furthermore, the N reference signal patterns correspond to M resource units, including one of the following: N reference signal patterns correspond to M layers, N reference signal patterns correspond to M codewords, N reference signal patterns correspond to M frequency domain units, N reference signal patterns correspond to M time domain units, N reference signal patterns correspond to M transmission types, N reference signal patterns correspond to M repeated transmission times, N reference signal patterns correspond to M models or model indications, and N reference signal patterns correspond to M functions or function indications.

[0169] Exemplarily, N reference signal patterns correspond to M layers, including: N reference signal patterns corresponding to N layer groups, where the N layer groups are determined based on the M layers, and each layer group includes at least one layer, such as dividing the M layers into N layer groups. For example, a first reference signal pattern corresponds to an odd-numbered layer, and a second reference signal pattern corresponds to an even-numbered layer.

[0170] Alternatively, N reference signal patterns correspond to M frequency domain units, including: N reference signal patterns corresponding to N frequency domain unit groups, wherein the N frequency domain unit groups are determined based on the M frequency domain units, and the frequency domain unit groups include at least one frequency domain unit, such as dividing the M frequency domain units into N frequency domain unit groups. For example, the third reference signal pattern corresponds to an odd-numbered frequency domain unit, and the fourth reference signal pattern corresponds to an even-numbered frequency domain unit.

[0171] Alternatively, N reference signal patterns correspond to M time domain units, including: N reference signal patterns corresponding to N time domain unit groups, wherein the N time domain unit groups are determined based on the M time domain units, and the time domain unit groups include at least one time domain unit, for example, the M time domain units are divided into N time domain unit groups. For example, the fifth reference signal pattern corresponds to odd-numbered time domain units, and the sixth reference signal pattern corresponds to even-numbered time domain units.

[0172] Alternatively, N reference signal patterns correspond to M transmission types, including: N reference signal patterns corresponding to N transmission type groups, wherein the N transmission type groups are determined based on the M transmission types, for example, the M transmission types are divided into N transmission type groups, and the transmission type group includes at least one transmission type of the first transmission and the i-th retransmission, i=1,…,C, C is the maximum number of retransmissions. For example, the seventh reference signal pattern corresponds to the first transmission of data, and the eighth reference signal pattern corresponds to the retransmission of data.

[0173] Alternatively, N reference signal patterns correspond to M repetition transmission times, including: N reference signal patterns corresponding to N repetition transmission time arrays, wherein the N repetition transmission time arrays are determined based on the M repetition transmission times, and the repetition transmission time arrays include at least one repetition transmission time array, such as dividing the M repetition transmission times into N repetition transmission time arrays. For example, the ninth reference signal pattern corresponds to odd-numbered data repetition transmissions, the tenth reference signal pattern corresponds to even-numbered data repetition transmissions, and the N reference signal patterns correspond to N repetition transmission time arrays.

[0174] In some embodiments, the transmission type includes an initial transmission and an i-th repeated transmission, including one of the following: a CDM group density of a reference signal pattern corresponding to the i-th repeated transmission is greater than a CDM group density of a reference signal pattern corresponding to the initial transmission, the CDM group density including a time domain density and / or a frequency domain density. The CDM group density of the reference signal pattern corresponding to the i-th retransmission is determined based on an accuracy rate of the initial transmission, where i=1, ..., C, where C is a maximum number of retransmissions.

[0175] Alternatively, N reference signal patterns correspond to M models or model indicators, including: N reference signal patterns correspond to N model groups or model indicator groups, where the N model groups are determined based on the M models, each model group including at least one model, for example, the M models are divided into N model groups. Alternatively, N model indicator groups are determined based on the M model indicators, each model indicator group including at least one model indicator, for example, the M model indicators are divided into N model indicator groups.

[0176] Alternatively, N reference signal patterns correspond to M functions or function indicators, including: N reference signal patterns correspond to N function groups or function indicator groups, where the N function groups are determined based on the M functions, each function group including at least one function, for example, the M functions are divided into N function groups; and N function indicator groups are determined based on the M function indicators, each function indicator group including at least one function indicator, for example, the M function indicators are divided into N function indicator groups.

[0177] In some embodiments, the transmission type includes initial transmission and repeated transmission, wherein the density of the CDM group corresponding to the reference signal pattern corresponding to the repeated transmission is greater than the density of the CDM group corresponding to the reference signal pattern corresponding to the initial transmission, and the density includes time domain density and / or frequency domain density.

[0178] In one example, the density of the CDM group corresponding to the reference signal pattern corresponding to the repeated transmission is determined according to the accuracy of the initial transmission.

[0179] In some embodiments, the reference signal configuration information is included in second higher layer signaling and / or physical layer signaling, such as in at least one of RRC signaling, MAC CE, or DCI. The reference signal configuration information is obtained by receiving the second higher layer signaling and / or physical layer signaling.

[0180] In some embodiments, the second communication node may receive the reference signal configuration information sent by the first communication node, and receive a reference signal based on the REs of the reference signal pattern, thereby obtaining an estimate or measurement of the channel, and thereby demodulating the received data or signaling.

[0181] In addition, for the detailed description of step S201, reference can be made to the relevant descriptions in the above steps S101-S102, which will not be repeated here.

[0182] S202: Determine reference signal patterns of M resource units, and receive reference signals corresponding to the resource units according to the reference signal patterns of the M resource units.

[0183] The first communication node may pre-configure a reference signal pattern, that is, generate reference signal configuration information and send the information to the second communication node. Correspondingly, the second communication node may receive the reference signal configuration information.

[0184] In one example, the second communication node may further determine a reference signal pattern for the M resource units based on the received reference signal configuration information. Furthermore, the second communication node may receive reference signals corresponding to the resource units based on the reference signal pattern for the M resource units, i.e., receive reference signals based on the reference signal pattern configured by the first communication node.

[0185] In another example, the second communication node may also determine the reference signal patterns of the M resource units through the received first higher layer signaling and / or physical layer signaling, and then receive the reference signals corresponding to the resource units according to the reference signal patterns of the M resource units.

[0186] The above mainly introduces the solution provided by the present disclosure from the perspective of the interaction between various communication nodes. It is understandable that, in order to implement the above functions, each communication node includes a hardware structure and / or software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present disclosure.

[0187] FIG11 is a schematic diagram showing the composition of a communication device provided by an embodiment of the present disclosure. As shown in FIG11 , the communication device 110 includes a processing module 1101 and a sending module 1102 .

[0188] In some embodiments, the processing module 1101 is configured to generate reference signal configuration information. The sending module 1102 is configured to send the reference signal configuration information. The reference signal configuration information includes N reference signal patterns, and the N reference signal patterns correspond to M resource units, where N and M are integers greater than 1.

[0189] In some embodiments, the N reference signal patterns include at least two different reference signal patterns; wherein the two reference signal patterns are different in at least one of the following aspects: the time domain density of the CDM group corresponding to the reference signal pattern; the frequency domain density of the CDM group corresponding to the reference signal pattern; the increased number of reference signal symbols corresponding to the reference signal pattern; the reference signal sequence corresponding to the reference signal pattern; the OCC code of the CDM group corresponding to the reference signal pattern; the starting symbol index corresponding to the reference signal pattern; the symbol index set corresponding to the reference signal pattern; the starting subcarrier index corresponding to the reference signal pattern; and the subcarrier index set corresponding to the reference signal pattern.

[0190] In some embodiments, the resource unit includes at least one of the following: layer, codeword, frequency domain unit, time domain unit, transmission type, number of repeated transmissions, model, model indication, function, function indication.

[0191] In some embodiments, N reference signal patterns correspond to M resource units, including: N reference signal patterns correspond to N resource unit groups, wherein the N resource unit groups are determined according to the M resource units, and the resource unit groups include at least one resource unit.

[0192] In some embodiments, N reference signal patterns correspond to M resource units, including one of the following: N reference signal patterns correspond to M layers; N reference signal patterns correspond to M codewords; N reference signal patterns correspond to M frequency domain units; N reference signal patterns correspond to M time domain units; N reference signal patterns correspond to M transmission types; N reference signal patterns correspond to M repeated transmission times; N reference signal patterns correspond to M models or model indications; N reference signal patterns correspond to M functions or function indications.

[0193] In some embodiments, N reference signal patterns correspond to M layers, including: N reference signal patterns correspond to N layer groups, wherein the N layer groups are determined according to the M layers, and the layer groups include at least one layer.

[0194] In some embodiments, N reference signal patterns correspond to M frequency domain units, including: N reference signal patterns correspond to N frequency domain unit groups, wherein the N frequency domain unit groups are determined according to the M frequency domain units, and the frequency domain unit groups include at least one frequency domain unit.

[0195] In some embodiments, N reference signal patterns correspond to M time domain units, including: N reference signal patterns correspond to N time domain unit groups, wherein the N time domain unit groups are determined according to the M time domain units, and the time domain unit groups include at least one time domain unit.

[0196] In some embodiments, N reference signal patterns correspond to M transmission types, including: N reference signal patterns correspond to N transmission type groups, wherein the N transmission type groups are determined based on the M transmission types, and the transmission type groups include at least one transmission type of the first transmission and the i-th retransmission, i = 1, ..., C, where C is the maximum number of retransmissions.

[0197] In some embodiments, the transmission type includes the first transmission and the i-th retransmission, including one of the following: the CDM group density of the reference signal pattern corresponding to the i-th retransmission is greater than the CDM group density of the reference signal pattern corresponding to the first transmission; the CDM group density of the reference signal pattern corresponding to the i-th retransmission is determined according to the accuracy of the first transmission, i = 1, ..., C, C is the maximum number of retransmissions.

[0198] In some embodiments, N reference signal patterns correspond to M repetition transmission times, including: N reference signal patterns correspond to N repetition transmission times arrays, wherein the N repetition transmission times arrays are determined based on the M repetition transmission times, and the repetition transmission times arrays include at least one repetition transmission time.

[0199] In some embodiments, N reference signal patterns correspond to M models, including: N reference signal patterns correspond to N model groups or model indication groups, N model groups are determined based on M models, and the model group includes at least one model, or N model indication groups are determined based on M model indications, and the model indication group includes at least one model indication.

[0200] In some embodiments, N reference signal patterns correspond to M functions or function indications, including: N reference signal patterns correspond to N function groups or function indication groups, N function groups are determined based on M functions, the function groups include at least one function, and N function indication groups are determined based on M function indications, and the function indication groups include at least one function indication.

[0201] In some embodiments, the reference signal configuration information further includes signaling for indicating a correspondence between the N reference signal patterns and the M resource units.

[0202] In some embodiments, N reference signal patterns correspond to M resource units, including: the correspondence between the N reference signal patterns and the M resource units is indicated by high-layer signaling and / or physical layer signaling, wherein the high-layer signaling and / or physical layer signaling is one of the following: a bitmap, a list, an array, a table.

[0203] In some embodiments, the higher layer signaling and / or the physical layer signaling includes M indicator values, each indicator value corresponds to a resource unit and is used to indicate the reference signal pattern corresponding to the resource unit.

[0204] In some embodiments, the higher layer signaling and / or the physical layer signaling includes N indicator values, each indicator value corresponds to a reference signal pattern and is used to indicate the resource unit corresponding to the reference signal pattern.

[0205] In some embodiments, the reference signal configuration information is transmitted via at least one of RRC signaling, MAC CE, or DCI.

[0206] For a more detailed description of the above-mentioned processing module 1101 and sending module 1102, a more detailed description of each technical feature therein, and a description of the beneficial effects, etc., please refer to the above-mentioned corresponding method embodiment part, which will not be repeated here.

[0207] FIG12 is a schematic diagram showing the composition of a communication device provided by an embodiment of the present disclosure. As shown in FIG12 , the communication device 120 includes a first receiving module 1201 , a determining module 1202 , and a second receiving module 1203 .

[0208] In some embodiments, a first receiving module 1201 is configured to receive reference signal configuration information, where the reference signal configuration information includes N reference signal patterns, where the N reference signal patterns correspond to M resource units, where N and M are integers greater than 1. A determining module 1202 is configured to determine reference signal patterns for the M resource units, and a second receiving module 1203 is configured to receive reference signals corresponding to the resource units based on the reference signal patterns for the M resource units.

[0209] In some embodiments, the N reference signal patterns include at least two different reference signal patterns; wherein the two reference signal patterns are different in at least one of the following aspects: the time domain density of the CDM group corresponding to the reference signal pattern; the frequency domain density of the CDM group corresponding to the reference signal pattern; the increased number of reference signal symbols corresponding to the reference signal pattern; the reference signal sequence corresponding to the reference signal pattern; the OCC code of the CDM group corresponding to the reference signal pattern; the starting symbol index corresponding to the reference signal pattern; the symbol index set corresponding to the reference signal pattern; the starting subcarrier index corresponding to the reference signal pattern; and the subcarrier index set corresponding to the reference signal pattern.

[0210] In some embodiments, the resource unit includes at least one of the following: layer, codeword, frequency domain unit, time domain unit, transmission type, number of repeated transmissions, model, model indication, function, function indication.

[0211] In some embodiments, N reference signal patterns correspond to M resource units, including: N reference signal patterns correspond to N resource unit groups, wherein the N resource unit groups are determined according to the M resource units, and the resource unit groups include at least one resource unit.

[0212] In some embodiments, N reference signal patterns correspond to M resource units, including one of the following: N reference signal patterns correspond to M layers; N reference signal patterns correspond to M codewords; N reference signal patterns correspond to M frequency domain units; N reference signal patterns correspond to M time domain units; N reference signal patterns correspond to M transmission types; N reference signal patterns correspond to M repeated transmission times; N reference signal patterns correspond to M models or model indications; N reference signal patterns correspond to M functions or function indications.

[0213] In some embodiments, N reference signal patterns correspond to M layers, including: N reference signal patterns correspond to N layer groups, wherein the N layer groups are determined according to the M layers, and the layer groups include at least one layer.

[0214] In some embodiments, N reference signal patterns correspond to M frequency domain units, including: N reference signal patterns correspond to N frequency domain unit groups, wherein the N frequency domain unit groups are determined according to the M frequency domain units, and the frequency domain unit groups include at least one frequency domain unit.

[0215] In some embodiments, N reference signal patterns correspond to M time domain units, including: N reference signal patterns correspond to N time domain unit groups, wherein the N time domain unit groups are determined according to the M time domain units, and the time domain unit groups include at least one time domain unit.

[0216] In some embodiments, N reference signal patterns correspond to M transmission types, including: N reference signal patterns correspond to N transmission type groups, wherein the N transmission type groups are determined based on the M transmission types, and the transmission type groups include at least one transmission type of the first transmission and the i-th retransmission, i = 1, ..., C, where C is the maximum number of retransmissions.

[0217] In some embodiments, the transmission type includes the first transmission and the i-th retransmission, including one of the following: the CDM group density of the reference signal pattern corresponding to the i-th retransmission is greater than the CDM group density of the reference signal pattern corresponding to the first transmission; the CDM group density of the reference signal pattern corresponding to the i-th retransmission is determined according to the accuracy of the first transmission, i = 1, ..., C, C is the maximum number of retransmissions.

[0218] In some embodiments, N reference signal patterns correspond to M repetition transmission times, including: N reference signal patterns correspond to N repetition transmission times arrays, wherein the N repetition transmission times arrays are determined based on the M repetition transmission times, and the repetition transmission times arrays include at least one repetition transmission time.

[0219] In some embodiments, N reference signal patterns correspond to M models, including: N reference signal patterns correspond to N model groups or model indication groups, N model groups are determined based on M models, and the model group includes at least one model, or N model indication groups are determined based on M model indications, and the model indication group includes at least one model indication.

[0220] In some embodiments, N reference signal patterns correspond to M functions or function indications, including: N reference signal patterns correspond to N function groups or function indication groups, N function groups are determined based on M functions, the function groups include at least one function, and N function indication groups are determined based on M function indications, and the function indication groups include at least one function indication.

[0221] In some embodiments, the reference signal configuration information further includes signaling for indicating a correspondence between the N reference signal patterns and the M resource units.

[0222] In some embodiments, N reference signal patterns correspond to M resource units, including: the correspondence between the N reference signal patterns and the M resource units is indicated by high-layer signaling and / or physical layer signaling, wherein the high-layer signaling and / or physical layer signaling is one of the following: a bitmap, a list, an array, a table.

[0223] In some embodiments, the higher layer signaling and / or the physical layer signaling includes M indicator values, each indicator value corresponds to a resource unit and is used to indicate the reference signal pattern corresponding to the resource unit.

[0224] In some embodiments, the higher layer signaling and / or the physical layer signaling includes N indicator values, each indicator value corresponds to a reference signal pattern and is used to indicate the resource unit corresponding to the reference signal pattern.

[0225] In some embodiments, the reference signal configuration information is transmitted via at least one of RRC signaling, MAC CE, or DCI.

[0226] For a more detailed description of the first receiving module 1201, the determination module 1202 and the second receiving module 1203, as well as a more detailed description of each technical feature and a description of the beneficial effects, please refer to the corresponding method embodiment section above and will not be repeated here.

[0227] It should be noted that the modules in FIG11 or FIG12 may also be referred to as units. For example, the sending module may be referred to as a sending unit. In addition, in the embodiment shown in FIG10 or FIG12 , the names of the modules may not be those shown in the figure. For example, the sending module may be referred to as a communication module, and the receiving module may be referred to as a communication module.

[0228] If the various units or modules in Figure 11 or Figure 12 are implemented in the form of software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present disclosure is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the various embodiments of the present disclosure. The storage medium for storing computer software products includes: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0229] In the case of implementing the functions of the above-mentioned integrated modules in hardware, an embodiment of the present disclosure provides a schematic structural diagram of a communication device, which may be the above-mentioned communication device 110 or communication device 120. As shown in Figure 13, the communication device 130 includes: a processor 1302, a communication interface 1303, and a bus 1304. Optionally, the communication device 130 may also include a memory 1301.

[0230] Processor 1302 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the present disclosure. Processor 1302 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the present disclosure. Processor 1302 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, or a combination of a DSP and a microprocessor.

[0231] The communication interface 1303 is used to connect to other devices via a communication network, such as Ethernet, wireless access network, or wireless local area network (WLAN).

[0232] The memory 1301 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0233] As a possible implementation, memory 1301 may exist independently of processor 1302. Memory 1301 may be connected to processor 1302 via bus 1304 to store instructions or program codes. When processor 1302 calls and executes the instructions or program codes stored in memory 1301, the method provided in the embodiments of the present disclosure can be implemented.

[0234] In another possible implementation, the memory 1301 and the processor 1302 may also be integrated together.

[0235] Bus 1304 can be an Extended Industry Standard Architecture (EISA) bus, etc. Bus 1304 can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, FIG13 shows only one thick line, but this does not mean that there is only one bus or only one type of bus.

[0236] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the equipment or device is divided into different functional modules to complete all or part of the functions described above.

[0237] The embodiments of the present disclosure also provide a computer-readable storage medium. All or part of the processes in the above-mentioned method embodiments can be completed by computer instructions to instruct relevant hardware, and the program can be stored in the above-mentioned computer-readable storage medium. When the program is executed, it can include the processes of the above-mentioned method embodiments. The computer-readable storage medium can be the memory of any of the above-mentioned embodiments. The above-mentioned computer-readable storage medium can also be an external storage device of the above-mentioned device or apparatus, such as a plug-in hard disk, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. equipped on the above-mentioned device or apparatus. Furthermore, the above-mentioned computer-readable storage medium can also include both the internal storage unit of the above-mentioned device or apparatus and an external storage device. The above-mentioned computer-readable storage medium is used to store the above-mentioned computer program and other programs and data required by the above-mentioned device or apparatus. The above-mentioned computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.

[0238] The embodiments of the present disclosure further provide a computer program product, which includes a computer program. When the computer program product is run on a computer, the computer is enabled to execute any one of the methods provided in the above embodiments.

[0239] Although the present disclosure is described herein in conjunction with various embodiments, in the process of implementing the disclosure for which protection is sought, those skilled in the art may understand and implement other variations of the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple components. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0240] Although the present disclosure has been described with reference to specific features and embodiments thereof, it will be apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present disclosure. Accordingly, this specification and the drawings are merely illustrative of the present disclosure as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present disclosure. Obviously, those skilled in the art may make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, the present disclosure is intended to encompass such modifications and variations if they fall within the scope of the claims of the present disclosure and their equivalents.

[0241] The above is only a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or replacements within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A method for sending reference signal configuration information, the method comprising: Generate reference signal configuration information; wherein the reference signal configuration information includes N reference signal patterns, and the N reference signal patterns correspond to M resource units, wherein N and M are integers greater than 1; The reference signal configuration information is sent.

2. The method according to claim 1, wherein: The N reference signal patterns include at least two different reference signal patterns; wherein the two reference signal patterns are different in at least one of the following aspects: The time domain density of the code division multiplexing (CDM) group corresponding to the reference signal pattern; The frequency domain density of the CDM group corresponding to the reference signal pattern; the number of reference signal symbols added corresponding to the reference signal pattern; a reference signal sequence corresponding to the reference signal pattern; The orthogonal cover OCC code of the CDM group corresponding to the reference signal pattern; The starting symbol index corresponding to the reference signal pattern; A set of symbol indices corresponding to the reference signal pattern; The starting subcarrier index corresponding to the reference signal pattern; The subcarrier index set corresponding to the reference signal pattern.

3. The method according to claim 1, wherein: The resource unit includes at least one of the following: layer, codeword, frequency domain unit, time domain unit, transmission type, number of repeated transmissions, model, model indication, function, function indication.

4. The method according to claim 1, wherein: The N reference signal patterns correspond to M resource units, including: the N reference signal patterns correspond to N resource unit groups, wherein the N resource unit groups are determined according to the M resource units, and the resource unit groups include at least one resource unit.

5. The method according to claim 1, wherein: The N reference signal patterns correspond to M resource units, including one of the following: N reference signal patterns correspond to M layers; N reference signal patterns correspond to M codewords; N reference signal patterns correspond to M frequency domain units; N reference signal patterns correspond to M time domain units; N reference signal patterns correspond to M transmission types; N reference signal patterns correspond to M repetition transmission times; N reference signal patterns correspond to M models or model indications; N reference signal patterns correspond to M functions or function indications.

6. The method according to claim 5, wherein: The N reference signal patterns correspond to M layers, including: The N reference signal patterns correspond to N layer groups, wherein the N layer groups are determined according to M layers, and the layer groups include at least one layer.

7. The method according to claim 5, wherein: The N reference signal patterns correspond to M frequency domain units, including: The N reference signal patterns correspond to N frequency domain unit groups, wherein the N frequency domain unit groups are determined according to M frequency domain units, and the frequency domain unit groups include at least one frequency domain unit.

8. The method according to claim 5, wherein: The N reference signal patterns correspond to M time domain units, including: The N reference signal patterns correspond to N time domain unit groups, wherein the N time domain unit groups are determined according to M time domain units, and the time domain unit groups include at least one time domain unit.

9. The method according to claim 5, wherein: The N reference signal patterns correspond to M transmission types, including: The N reference signal patterns correspond to N transmission type groups, wherein the N transmission type groups are determined according to M transmission types, and the transmission type groups include at least one transmission type of the first transmission and the i-th retransmission, i=1, ..., C, C is the maximum number of retransmissions.

10. The method according to claim 9, wherein: The transmission type includes the first transmission and the i-th retransmission, including one of the following: the CDM group density of the reference signal pattern corresponding to the i-th retransmission is greater than the CDM group density of the reference signal pattern corresponding to the first transmission; the CDM group density of the reference signal pattern corresponding to the i-th retransmission is determined according to the accuracy of the first transmission, i=1,…,C, C is the maximum number of retransmissions.

11. The method according to claim 5, wherein: The N reference signal patterns correspond to M repetition transmission times, including: The N reference signal patterns correspond to N repetition transmission times arrays, wherein the N repetition transmission times arrays are determined according to M repetition transmission times, and the repetition transmission times array includes at least one repetition transmission times.

12. The method according to claim 5, wherein: The N reference signal patterns correspond to M models, including: The N reference signal patterns correspond to N model groups or model indication groups, the N model groups are determined based on M models, the model groups include at least one model, or the N model indication groups are determined based on M model indications, the model indication groups include at least one model indication.

13. The method according to claim 5, wherein: The N reference signal patterns correspond to M functions or function indications, including: The N reference signal patterns correspond to N function groups or function indication groups, the N function groups are determined according to M functions, the function groups include at least one function, the N function indication groups are determined according to M function indications, and the function indication groups include at least one function indication.

14. The method according to claim 1, wherein: The reference signal configuration information also includes signaling for indicating a correspondence between the N reference signal patterns and the M resource units.

15. The method according to claim 1, wherein: The N reference signal patterns correspond to M resource units, including: sending the correspondence between the N reference signal patterns and the M resource units through first high-level signaling and / or physical layer signaling, wherein the first high-level signaling and / or physical layer signaling is one of the following: a bitmap, a list, an array, a table.

16. The method according to claim 15, wherein: The first high-layer signaling and / or physical layer signaling includes M indication values, each indication value corresponds to a resource unit, and is used to indicate a reference signal pattern corresponding to the resource unit.

17. The method according to claim 15, wherein: The first high-layer signaling and / or physical layer signaling includes N indication values, each indication value corresponds to a reference signal pattern, and is used to indicate a resource unit corresponding to the reference signal pattern.

18. The method according to claim 1, wherein: The reference signal configuration information is sent via second higher layer signaling and / or physical layer signaling.

19. A method for receiving reference signal configuration information, the method comprising: receiving reference signal configuration information, the reference signal configuration information including N reference signal patterns, the N reference signal patterns corresponding to M resource units, where N and M are integers greater than 1; Determine reference signal patterns of the M resource units, and receive reference signals corresponding to the resource units according to the reference signal patterns of the M resource units.

20. The method according to claim 19, wherein: The N reference signal patterns include at least two different reference signal patterns; wherein the two reference signal patterns are different in at least one of the following aspects: The time domain density of the CDM group corresponding to the reference signal pattern; The frequency domain density of the CDM group corresponding to the reference signal pattern; the number of reference signal symbols added corresponding to the reference signal pattern; a reference signal sequence corresponding to the reference signal pattern; The OCC code of the CDM group corresponding to the reference signal pattern; The starting symbol index corresponding to the reference signal pattern; A symbol index set corresponding to the reference signal pattern; The starting subcarrier index corresponding to the reference signal pattern; The subcarrier index set corresponding to the reference signal pattern.

21. The method according to claim 19, wherein: The resource unit includes at least one of the following: layer, codeword, frequency domain unit, time domain unit, transmission type, number of repeated transmissions, model, model indication, function, function indication.

22. The method according to claim 19, wherein: The N reference signal patterns correspond to M resource units, including: the N reference signal patterns correspond to N resource unit groups, wherein the N resource unit groups are determined according to the M resource units, and the resource unit groups include at least one resource unit.

23. The method according to claim 19, wherein: The N reference signal patterns correspond to M resource units, including one of the following: N reference signal patterns correspond to M layers; N reference signal patterns correspond to M codewords; N reference signal patterns correspond to M frequency domain units; N reference signal patterns correspond to M time domain units; N reference signal patterns correspond to M transmission types; N reference signal patterns correspond to M repetition transmission times; N reference signal patterns correspond to M models or model indications; N reference signal patterns correspond to M functions or function indications.

24. The method according to claim 19, wherein: The reference signal configuration information also includes signaling for indicating a correspondence between the N reference signal patterns and the M resource units.

25. The method of claim 19, wherein: The N reference signal patterns correspond to M resource units, including: receiving the correspondence between the N reference signal patterns and the M resource units through first high-level signaling and / or physical layer signaling, wherein the first high-level signaling and / or physical layer signaling is one of the following: bitmap, list, array, table.

26. The method according to claim 25, wherein: The first high-layer signaling and / or physical layer signaling includes M indication values, each indication value corresponds to a resource unit, and is used to indicate a reference signal pattern corresponding to the resource unit.

27. The method according to claim 26, wherein: The first high-layer signaling and / or physical layer signaling includes N indication values, each indication value corresponds to a reference signal pattern, and is used to indicate a resource unit corresponding to the reference signal pattern.

28. The method of claim 19, wherein: The reference signal configuration information is received through second higher layer signaling and / or physical layer signaling.

29. A communication device, comprising: Memory and processor; Memory and processor coupling; The memory is used to store instructions executable by the processor; When the processor executes the instructions, the method according to any one of claims 1 to 28 is performed.

30. A computer-readable storage medium having computer instructions stored thereon, wherein when the computer instructions are executed on a communication device, the communication device is caused to execute the method according to any one of claims 1 to 28.

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