Communication method, terminal device, and network device

Abstract

The present application relates to a communication method, a terminal device, and a network device. The communication method comprises: a terminal device receives a first signal, the first signal comprising a downlink reference signal and / or downlink channel transmitted by at least two network nodes on a same time-frequency resource; and the terminal device obtains the downlink reference signal and / or downlink channel from the first signal by using one or more of the following pieces of information: time-frequency position information of the downlink reference signal and / or downlink channel, power information of the downlink reference signal and / or downlink channel, and transmission spatial filter information of the downlink reference signal and / or downlink channel. According to the present application, a plurality of network nodes can be supported to transmit signals and / or channels on a same time-frequency resource.

Description

Communication method, terminal device and network device Technical Field

[0001] The present application relates to the field of communications, and more specifically, to a communication method, a terminal device, and a network device. Background Art

[0002] In Multiple Transmission Reception Point (MTRP) technology, user equipment (UE) can communicate with two or more TRPs. When multiple network nodes transmit signals to the UE on the same time-frequency resources, how the UE can separate the downlink reference signal and / or downlink channel from the received signal is a technical problem that needs to be solved.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide a communication method, a terminal device, and a network device that can support multiple network nodes to transmit signals and / or channels on the same time-frequency resources.

[0005] An embodiment of the present application provides a communication method, including:

[0006] The terminal device receives a first signal, where the first signal includes a downlink reference signal and / or a downlink channel transmitted by at least two network nodes on the same time-frequency resources;

[0007] The terminal device obtains a downlink reference signal and / or a downlink channel from the first signal using one or more of the following information:

[0008] Time-frequency position information of a downlink reference signal and / or a downlink channel;

[0009] Power information of a downlink reference signal and / or a downlink channel;

[0010] Transmit spatial filter information of a downlink reference signal and / or a downlink channel.

[0011] An embodiment of the present application provides a communication method, including:

[0012] The network device sends one or more of the following information to the terminal device, for the terminal device to obtain a downlink reference signal and / or a downlink channel from a first signal, where the first signal includes downlink reference signals and / or downlink channels transmitted by at least two network nodes on the same time-frequency resources:

[0013] Time-frequency position information of a downlink reference signal and / or a downlink channel;

[0014] Power information of a downlink reference signal and / or a downlink channel;

[0015] Transmit spatial filter information of a downlink reference signal and / or a downlink channel.

[0016] The present invention provides a model training method, including:

[0017] Train the neural network model using multiple training samples and corresponding labels;

[0018] The training sample includes a first signal, where the first signal includes a downlink reference signal and / or a downlink channel transmitted by at least two network nodes on the same time-frequency resource;

[0019] The training sample also includes at least one of time-frequency position information of a downlink reference signal and / or a downlink channel, power information of the downlink reference signal and / or the downlink channel, and transmit spatial filter information of the downlink reference signal and / or the downlink channel.

[0020] An embodiment of the present application provides a terminal device, including:

[0021] A first transceiver module is configured to receive a first signal, where the first signal includes a downlink reference signal and / or a downlink channel transmitted by at least two network nodes on the same time-frequency resource;

[0022] A first processing module is configured to obtain a downlink reference signal and / or a downlink channel from the first signal by using one or more of the following information:

[0023] Time-frequency position information of a downlink reference signal and / or a downlink channel;

[0024] Power information of a downlink reference signal and / or a downlink channel;

[0025] Transmit spatial filter information of a downlink reference signal and / or a downlink channel.

[0026] An embodiment of the present application provides a network device, including:

[0027] The second transceiver module is configured to send one or more of the following information to the terminal device, where the one or more of the following information is used by the terminal device to obtain a downlink reference signal and / or a downlink channel from the first signal, where the first signal includes downlink reference signals and / or downlink channels transmitted by at least two network nodes on the same time-frequency resources:

[0028] Time-frequency position information of a downlink reference signal and / or a downlink channel;

[0029] Power information of a downlink reference signal and / or a downlink channel;

[0030] Transmit spatial filter information of a downlink reference signal and / or a downlink channel.

[0031] The present invention provides a model training device, comprising:

[0032] A training module, used to train a neural network model using multiple training samples and corresponding labels;

[0033] The training sample includes a first signal, where the first signal includes a downlink reference signal and / or a downlink channel transmitted by at least two network nodes on the same time-frequency resource;

[0034] The training sample also includes at least one of time-frequency position information of a downlink reference signal and / or a downlink channel, power information of the downlink reference signal and / or the downlink channel, and transmit spatial filter information of the downlink reference signal and / or the downlink channel.

[0035] An embodiment of the present application provides a terminal device, comprising: a transceiver, a processor, and a memory. The memory is used to store a computer program, the transceiver is used to communicate with other devices, and the processor is used to call and execute the computer program stored in the memory so that the terminal device executes the above-mentioned communication method.

[0036] An embodiment of the present application provides a network device, comprising: a transceiver, a processor, and a memory. The memory is used to store a computer program, the transceiver is used to communicate with other devices, and the processor is used to call and execute the computer program stored in the memory so that the network device executes the above-mentioned communication method.

[0037] An embodiment of the present application provides a chip for implementing the above-mentioned communication method.

[0038] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned communication method.

[0039] An embodiment of the present application provides a computer-readable storage medium for storing a computer program, which, when executed by a device, enables the device to execute the above-mentioned communication method.

[0040] An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the above-mentioned communication method.

[0041] An embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the above-mentioned communication method.

[0042] By adopting the communication method proposed in the embodiment of the present application, the terminal device can use the time-frequency position information, power information, and at least one of the transmission spatial filter information of the downlink reference signal and / or downlink channel to decompose the downlink reference signal and / or downlink channel from the signals transmitted by at least two network nodes on the same time-frequency resources, thereby supporting multiple network nodes to transmit signals and / or channels on the same time-frequency resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] FIG1 is a schematic diagram of MTRP for single DCI scheduling.

[0044] FIG2 is a schematic diagram of PDSCH and DMRS sharing time-frequency resources in NR.

[0045] FIG3 is a schematic diagram of a solution of superimposing DMRS and PDSCH.

[0046] FIG4 is a schematic flowchart of a communication method 400 according to an embodiment of the present application.

[0047] Figure 5 is a schematic diagram of a transmission scheme in which CSI-RS and SSB partially overlap according to Example 1 of the present application.

[0048] Figure 6 is a schematic diagram of an AI / ML-based SIP receiver or CNN model processing a received reference signal in Example 1 of the present application.

[0049] Figure 7 is a schematic diagram of a transmission scheme in which PDSCH, DMRS and SSB partially overlap according to Example 2 of the present application.

[0050] Figure 8 is a schematic diagram of an AI / ML-based SIP receiver or CNN model processing multiple reference signals and / or channels received and transmitted on the same time-frequency resources in Example 2 of the present application.

[0051] FIG9 is a schematic diagram of a transmission scheme in which a DMRS and other downlink reference signals are multiplexed on an RS layer in accordance with the third embodiment of the present application.

[0052] Figure 10 is a schematic diagram of the transmission scheme in which DMRS and PDSCH of different TRPs are superimposed on different RS layers and data layers in Example 4 of the present application.

[0053] Figure 11 is a schematic diagram of the transmission scheme in which DMRS of different TRPs are superimposed on the same RS layer and PDSCH of different TRPs are superimposed on different data layers in Example 4 of the present application.

[0054] Figure 12 is a schematic diagram of an AI / ML-based SIP receiver or CNN model processing signals and / or channels transmitted by at least two network nodes on the same time-frequency resources in Example 4 of the present application.

[0055] FIG13 is a schematic flowchart of a communication method 1300 according to an embodiment of the present application.

[0056] FIG14 is a schematic block diagram of a terminal device 1400 according to an embodiment of the present application.

[0057] FIG15 is a schematic block diagram of a network device 1500 according to an embodiment of the present application.

[0058] FIG16 is a schematic structural diagram of a communication device 1600 according to an embodiment of the present application.

[0059] FIG17 is a schematic structural diagram of a chip 1700 according to an embodiment of the present application.

[0060] FIG18 is a schematic block diagram of a communication system 1800 according to an embodiment of the present application. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0062] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), Fifth Generation (5G) system or other communication systems.

[0063] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0064] In one embodiment, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) networking scenario.

[0065] In one embodiment, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0066] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0067] The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0068] In an embodiment of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0069] In an embodiment of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0070] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0071] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in a WLAN, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network or a network device in an NTN network, etc.

[0072] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Alternatively, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0073] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0074] In an embodiment of the present application, the network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks for communicating with the access network equipment. The access network equipment may be an evolutionary base station (evolutional node B, referred to as eNB or e-NodeB) macro base station, micro base station (also called "small base station"), pico base station, access point (AP), transmission point (TP) or new generation Node B (gNodeB), etc. in a long-term evolution (LTE) system, a next-generation (mobile communication system) (next radio, NR) system or an authorized auxiliary access long-term evolution (LAA-LTE) system.

[0075] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0076] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0077] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0078] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0079] 1. Multi-TRP Technology in NR

[0080] multi-TRP can also be called multi-TRP transmission, multi-TRP, multi-TRP transmission, MTRP, MTRP transmission, etc.

[0081] In the multi-TRP PDSCH enhancements, two major scenarios are considered: enhanced mobile broadband (eMBB) and ultra-reliable low-latency communication (URLLC). Various multi-TRP transmission methods have been developed for each scenario. Specifically, they can be implemented using two different scheduling methods.

[0082] The first is single DCI (S-DCI) MTRP: In this method, the network (NW) uses a downlink control information (DCI) to schedule the transmission of two PDSCHs, where the DCI comes from one of the two single transmission reception points (TRP). The NW can dynamically adjust which TRP is used to send the DCI. The two physical downlink shared channels (PDSCHs) are transmitted through the two TRPs in different ways, such as space division multiplexing (SDM), frequency division multiplexing (FDM), time division multiplexing (TDM), and other multiplexing methods. This method is suitable for a more ideal backhaul link between TRPs. In addition, the scheduling DCI may include one or two Transmission Configuration Indication (TCI) states. The TCI state is used to indicate the dynamic switching between single TRP transmission (STRP) and multiple TRP transmission (MTRP). Specifically, when the code point indicated by the TCI field in the DCI (such as code point "000") is a TCI state, it indicates single TRP transmission; when the code point (for example, code point "001") indicates two TCI states, it indicates multiple TRP transmission, which is divided into the first TCI state and the second TCI state by the TCI state activated by the Media Access Control-Control Element (MAC CE) and the code point in the DCI. Each indicated TCI state is mapped to specific resources of the TRP transmission as the first or second TCI state, such as the Code Division Multiplexing (CDM) group, Demodulation Reference Signal (DMRS) port, number of transmission layers, Phase Tracking Reference Signal (PTRS) port, Redundancy Version (RV) version, and other PDSCH scheduling-related content.FIG1 is a schematic diagram of MTRP with single DCI scheduling. This MTRP scheduling mechanism is highly flexible. The network can choose to send Physical Downlink Control Channel (PDCCH) scheduling information from TRP1 or TRP2.

[0083] The second type is Multi-DCI (M-DCI) MTRP: In this method, each Transmission Relay Protocol (TRP) independently schedules transmissions to the UE using DCI. Ideal backhaul links are often not (or are not needed) between multiple TRPs. The scheduling information of the M-DCI is consistent with the DCI information of the S-TRP, that is, it only contains information associated with a single transmission TRP, such as indicating only a single TCI state ID.

[0084] It should be noted that the related art supports the solution of using a unified TCI state to replace multiple TCI states. In the embodiment of the present application, the unified TCI state can be used to indicate Quasi-Co-Located (QCL) information.

[0085] Neither S-DCI MTRP nor M-DCI MTRP supports the UE receiving downlink reference signals and / or downlink channels from one TRP and downlink reference signals and / or channels from another TRP on the same time-frequency resources. Therefore, it limits the scheduling and transmission flexibility when MTRP is deployed.

[0086] 2. SuperImposed Pilot (SIP) Technology

[0087] In existing NR technologies, PDSCH and DMRS need to share time-frequency resources. As shown in Figure 2, time-frequency resources are allocated between DMRS resource elements (REs) and PDSCH REs using a time-division multiplexing (TDM) approach. Given limited total time-frequency resources, the allocation of DMRS REs and PDSCH REs must balance the accuracy of channel estimation and the amount of data that can be carried. For example, if accurate channel estimation is required, the number of REs allocated to PDSCH to carry data will inevitably be reduced.

[0088] SIP technology can also be called superposition reference signal technology, including reference signal and channel superposition, reference signal and reference signal superposition, channel and channel superposition, etc. The time-frequency resources of one or more superimposed reference signals and / or the time-frequency resources of the channel can partially overlap or completely overlap, and the superimposed reference signals and / or channels can constitute a superposition space. Figure 3 is a schematic diagram of a scheme for superimposing DMRS and PDSCH. In the example shown in Figure 3, DMRS and PDSCH are transmitted on the same time-frequency resources, that is, PDSCH is superimposed with DMRS for transmission. A similar scheme can also be applied to PDCCH / Physical Uplink Control Channel (PUCCH) / Physical Uplink Shared Channel (PUSCH) and DMRS being transmitted on the same time-frequency resources. SIP technology has not been discussed in current technology, so SIP technology can be considered as a technology that has not been fully disclosed. This application is a further design based on it (that is, extended from a single transmission reception point (STRP) to MTRP).

[0089] The transmission scheme based on superimposed pilot (or superimposed reference signal) depends on the AI / ML receiver at the receiving end. In the embodiment of the present application, a receiver based on a model similar to a convolutional neural network (CNN) can be used. The characteristic of this model is that it can separate the superimposed reference signals (such as DMRS in the embodiment of the present application) and channels (such as PDSCH, PDCCH, etc. in the embodiment of the present application). A simple explanation is that the artificial intelligence (AI) / machine learning (ML) receiver can estimate the downlink channel through the separated DMRS, and then demodulate the PDSCH through the estimated channel. Among them, DMRS and PDSCH can use the same analog beamforming (beamforming) (if any) and / or precoding (precoding).

[0090] 3. CNN

[0091] The CNN model is a deep learning model primarily used to process data with a grid-like structure, such as images, sounds, and text. It originates from biological research on the animal visual cortex and mimics the animal's visual nervous system to process visual tasks.

[0092] The CNN model consists of multiple layers, including convolutional layers, pooling layers, and fully connected layers. The convolutional layers are responsible for extracting local features of the image, the pooling layers are responsible for reducing the dimensionality of the data and reducing the amount of computation, and the fully connected layers map the features to the final output, such as classification or regression tasks.

[0093] The convolutional layer is the core of CNNs, extracting local features from the input data through convolution operations. This operation typically involves a convolution kernel (also known as a filter), which slides over the input data and calculates the sum of dot products of the corresponding regions to form an output feature map. The output of the convolutional layer is typically passed through an activation function, such as the Rectified Linear Unit (ReLU), to introduce nonlinearity.

[0094] Pooling layers are used to reduce the spatial dimension of data, reduce computational effort, and prevent overfitting. Common pooling operations include max pooling and average pooling, which calculate the maximum and average values ​​of the input feature maps, respectively.

[0095] The fully connected layer maps the extracted features to the final output task, such as classification or regression. The number of neurons in the fully connected layer can be adjusted according to the task. The output layer typically passes through an activation function, such as Softmax, to output a probability value.

[0096] CNN is widely used in the field of computer vision, such as image classification, object detection, semantic segmentation and face recognition. CNN models have also been successfully applied in other fields, such as natural language processing and speech recognition.

[0097] In the NR system, NW can use the M-DCI-based MTRP technology for downlink coverage. Each TRP is scheduled independently, and there is often no real-time coordination of reference signal configuration and scheduling between multiple TRPs because there is no ideal backhaul. Therefore, the UE is likely to receive overlapping, partially overlapping, or non-overlapping downlink channels and downlink reference signals from multiple TRPs. This poses a challenge to the UE's downlink reception. Among them, the downlink reference signal includes the Channel State Information-Reference Signal (CSI-RS), the synchronization signal block (Synchronization Signal and PBCH Block, SSB) and DMRS; the downlink channel includes control signals and data channels, such as PDCCH and PDSCH, and the downlink channel can also be called a downlink signal.

[0098] When ideal backhaul transmission is available between multiple TRPs within a network, S-DCI-based MTRP operation can be employed. This means that one TRP schedules downlink transmissions from multiple TRPs. However, this approach requires UE capabilities and the definition of complex rules to determine which channels and signals are transmitted using which multiplexing method (such as time division multiplexing, frequency division multiplexing, or space division multiplexing). Such rules significantly increase the complexity of UE implementation.

[0099] For SIP transmission in a multi-TRP scenario, the downlink reference signals and / or downlink channels transmitted by at least two TRPs of the UE are superimposed to form a superimposed signal. For this scenario, an embodiment of the present application designs an AI / ML-based SIP receiver or CNN model, which can separate the superimposed downlink reference signal and downlink channel from the received superimposed signal. To this end, the support of UE capabilities is required, and sufficient information is provided to the SIP receiver or CNN model to enable it to separate the downlink reference signal and downlink channel from the received signal.

[0100] Multiple TRP operations can be performed both intra-cell and inter-cell. When multiple TRPs belong to different serving cells, different TRPs are associated with different PCIs (Physical Cell IDs). Therefore, it should be noted that the scheme designed in the embodiment of the present application is applicable to both intra-cell superposition reference signal transmission and multi-cell superposition reference signal transmission.

[0101] FIG4 is a schematic flow chart of a communication method 400 according to an embodiment of the present application. The method can optionally be applied to the system shown in FIG1 , but is not limited thereto. The method includes at least part of the following contents.

[0102] S410. A terminal device receives a first signal, where the first signal includes a downlink reference signal and / or a downlink channel transmitted by at least two network nodes on the same time-frequency resource.

[0103] S420: The terminal device obtains a downlink reference signal and / or a downlink channel from the first signal using one or more of the following information:

[0104] Time-frequency position information of a downlink reference signal and / or a downlink channel;

[0105] Power information of a downlink reference signal and / or a downlink channel;

[0106] Transmit spatial filter information of a downlink reference signal and / or a downlink channel.

[0107] In an embodiment of the present application, the network node may include a TRP.

[0108] In the embodiment of the present application, the first signal may also be referred to as a superimposed signal, which represents a signal and / or channel transmitted on the same time-frequency resources.

[0109] The terminal device can receive one or more of the following from the network device: time-frequency position information of a downlink reference signal and / or downlink channel, power information of the downlink reference signal and / or downlink channel, and transmit spatial filter information of the downlink reference signal and / or downlink channel. The terminal device can use this information as auxiliary information for decomposing the first signal, and decompose the first signal received from at least two network nodes to obtain the downlink reference signal and / or downlink channel. In this way, multiple network nodes can transmit signals and / or channels on the same time-frequency resources.

[0110] In the embodiment of the present application, the above-mentioned downlink channel may include a downlink control channel and / or a downlink data channel.

[0111] In some embodiments, a terminal device may employ a pre-trained neural network model, input a first signal into the neural network model, and input at least one of time-frequency position information of a downlink reference signal and / or a downlink channel, power information of the downlink reference signal and / or the downlink channel, and transmit spatial filter information of the downlink reference signal and / or the downlink channel into the neural network model, so that the neural network model outputs the downlink reference signal and / or the downlink channel. For example, the neural network model may output an estimated downlink reference signal and / or a decoded downlink channel.

[0112] In some implementations, an AI / ML-based SIP receiver or a CNN model may be provided in the terminal device, and the superimposed signal may be decomposed using the SIP receiver or the CNN model.

[0113] In some implementations, time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes partially overlap or completely overlap.

[0114] In some embodiments, downlink reference signals and / or downlink channels transmitted by at least two network nodes constitute an overlay space, which includes a reference signal layer and / or a data layer. The reference signal layer corresponds to the downlink reference signal, and the data layer corresponds to the downlink channel. Furthermore, the reference signal layer and the data layer in the overlay space may partially or completely overlap.

[0115] Downlink reference signals transmitted by different network nodes may be multiplexed into the same reference signal layer. For example, the downlink reference signals transmitted by different network nodes may be multiplexed using one or more of time division multiplexing, frequency division multiplexing, code division multiplexing, and space division multiplexing. Alternatively, the downlink reference signals transmitted by different network nodes may correspond to different reference signal layers.

[0116] Since there may be conventional UEs in the network, i.e., UEs that do not support multiple network nodes transmitting signals and / or channels on the same time-frequency resources, if a UE supports multiple network nodes transmitting signals and / or channels on the same time-frequency resources, the UE can report this capability to a network device, such as a base station.

[0117] For example, before the above step S410, the terminal device may send first information indicating whether the terminal device supports partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes.

[0118] By reporting capability information to the network device through the terminal device, the network device can send auxiliary information for decomposing the first signal to the UE that supports partial or complete overlap of the time-frequency resources of the downlink reference signal and / or the time-frequency resources of the downlink channel transmitted by at least two network nodes, i.e., one or more of the time-frequency position information of the downlink reference signal and / or the downlink channel, the power information of the downlink reference signal and / or the downlink channel, and the transmission spatial filter information of the downlink reference signal and / or the downlink channel; the terminal device receives one or more of the aforementioned information.

[0119] In some embodiments, the terminal device receives time-frequency position information of a downlink reference signal and / or a downlink channel, including: the terminal device receives a first configuration or a first indication, where the first configuration or the first indication is used to configure or indicate the time-frequency position information of the downlink reference signal and / or the downlink channel for different network nodes. The terminal device may receive the first configuration or the first indication from a network device, which may include a base station or a TRP.

[0120] The first configuration or the first indication may include one or more of RRC signaling, MAC CE signaling and DCI.

[0121] In one example, when the downlink reference signal includes a periodic CSI-RS, the terminal device receives a first configuration or a first indication, including:

[0122] The terminal device receives RRC signaling, which configures the periodic CSI-RS time-frequency resources.

[0123] In another example, when the downlink reference signal includes a semi-persistent CSI-RS, the terminal device receives a first configuration or a first indication, including:

[0124] The terminal device receives RRC signaling, where the RRC signaling configures a time-frequency resource of a CSI-RS, where the time-frequency resource of the CSI-RS configured by the RRC signaling includes a time-frequency resource of a semi-persistent CSI-RS;

[0125] The terminal device receives MAC CE signaling, which activates or deactivates the semi-persistent CSI-RS.

[0126] In another example, when the downlink reference signal includes an aperiodic CSI-RS, the terminal device receives the first configuration or the first indication, including:

[0127] The terminal device receives RRC signaling, where the RRC signaling configures time-frequency resources for the CSI-RS, where the time-frequency resources for the CSI-RS configured by the RRC signaling include time-frequency resources for the aperiodic CSI-RS;

[0128] The terminal device receives DCI, which schedules non-periodic CSI-RS.

[0129] In another example, when the downlink reference signal includes a DMRS, the terminal device receives the first configuration or the first indication, including:

[0130] The terminal device receives RRC signaling, where the RRC signaling configures time-frequency resources of a DMRS, where the time-frequency resources of the DMRS configured by the RRC signaling include time-frequency resources of an aperiodic DMRS;

[0131] The terminal device receives DCI, which schedules non-periodic DMRS.

[0132] Through the above-mentioned methods, the terminal device can receive the time-frequency position information of the downlink reference signal and / or downlink channel for different network nodes configured or indicated by the network device, and this information can be used as one of the auxiliary information for decomposing the first signal.

[0133] In some implementations, the power information of the downlink reference signal and / or downlink channel used by the terminal device to decompose the first signal may include one or more of the following:

[0134] a transmit power ratio between downlink reference signals and / or downlink channels;

[0135] A path loss for each of the at least two network nodes.

[0136] Alternatively, the power information of the downlink reference signal and / or downlink channel used by the terminal device to decompose the superimposed signal may include: a received power ratio between the downlink reference signal and / or the downlink channel.

[0137] The received power ratio between the downlink reference signal and / or downlink channels may be determined according to one or more of the following:

[0138] a transmit power ratio between downlink reference signals and / or downlink channels;

[0139] The path loss of each of the at least two network nodes.

[0140] The transmit power ratio between the downlink reference signal and / or downlink channels may include one or more of the following:

[0141] The transmit power ratio between each downlink reference signal;

[0142] The transmit power ratio between the downlink reference signal and the downlink channel.

[0143] In some embodiments, the terminal device receives power information of a downlink reference signal and / or a downlink channel, including: the terminal device receives a second configuration or a second indication, where the second configuration or the second indication is used to configure or indicate a transmit power ratio between the downlink reference signal and / or the downlink channel. The terminal device may receive the second configuration or the second indication from a network device, which may include a base station or a TRP.

[0144] The second configuration or the second indication may include one or more of RRC signaling, MAC CE signaling and DCI.

[0145] In one example, the terminal device receives the second configuration or the second indication, including: the terminal device receives RRC signaling, and the RRC signaling configures the downlink reference signal and / or the transmission power ratio between downlink channels.

[0146] In another example, the terminal device receives the second configuration or the second indication, including:

[0147] The terminal device receives RRC signaling, which configures a set of transmit power ratios;

[0148] The terminal device receives MAC CE signaling, which activates one of a set of transmit power ratios.

[0149] In another example, the terminal device receives the second configuration or the second indication, including:

[0150] The terminal device receives RRC signaling, which configures a set of transmit power ratios;

[0151] The terminal device receives MAC CE signaling, which activates a subset of a set of transmit power ratios;

[0152] The terminal device receives DCI indicating a transmit power in the subset.

[0153] In another example, the terminal device receives the second configuration or the second indication, including: the terminal device receives MAC CE signaling, and the MAC CE indicates a transmission power ratio between a downlink reference signal and / or a downlink channel.

[0154] In another example, the terminal device receives the second configuration or the second indication, including: the terminal device receives DCI, which indicates a downlink reference signal and / or a transmission power ratio between downlink channels.

[0155] Through the above-mentioned methods, the terminal device can receive the downlink reference signal and / or the transmission power ratio between downlink channels configured or indicated by the network device, and this information can be used as one of the auxiliary information for decomposing the first signal.

[0156] The following is a detailed introduction with reference to specific embodiments in conjunction with the accompanying drawings. In the following embodiments, the example of a UE receiving downlink reference signals and / or downlink channels sent by 2 TRPs on the same time-frequency resources is used for introduction. The embodiments of the present application are also applicable to the case where the UE receives reference signals and / or downlink channels sent by multiple TRPs. In the following examples, the network node is used as an example for introduction. In the embodiments of the present application, the UE can also receive downlink reference signals and / or downlink channels transmitted by other network nodes on the same time-frequency resources.

[0157] Example 1:

[0158] In this embodiment, in a multi-TRP scenario, each TRP transmits its own downlink reference signal, such as CSI-RS or SSB. Each TRP transmits its own downlink reference signal on the same time-frequency resources, and the downlink reference signals from different TRPs partially overlap (Partial SIP) or completely overlap (SIP), that is, the time-frequency resources occupied by the downlink reference signals transmitted by different TRPs are partially the same or completely the same. For example, there is partial overlap between different types of reference signals (such as CSI-RS and SSB), and complete overlap between the same type of reference signals (such as SSB and SSB).

[0159] Figure 5 is a schematic diagram of a transmission scheme in which CSI-RS and SSB partially overlap in embodiment 1 of the present application. As shown in Figure 5, CSI-RS and SSB are respectively transmitted by two different TRPs, and the two TRPs transmit CSI-RS and SSB respectively on the same time-frequency resources. In the example shown in Figure 5, the time-frequency resources of CSI-RS partially overlap with the time-frequency resources of SSB. CSI-RS and SSB constitute an overlay space, which includes two layers, namely a first layer (layer#1) and a second layer (layer#2), where the first layer corresponds to SSB and the second layer corresponds to CSI-RS.

[0160] Since there may be conventional UEs in the network, that is, UEs that do not support partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes. If a UE is equipped with an AI / ML-based SIP receiver, that is, the UE has the ability to support partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes, then the UE can report the capability to the NW, such as reporting to the base station. In one implementation, the terminal device sends first information, which indicates whether the terminal device supports partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes.

[0161] In this embodiment, the UE capabilities indicated by the first information may include one or more of the following, but are not limited to the following:

[0162] (1) Whether partial or complete overlapping transmission of SSB and CSI-RS is supported;

[0163] (2) Whether partial or complete overlapping transmission of SSB and SSB is supported;

[0164] (3) Whether partial or complete overlapping transmission of CSI-RS and CSI-RS is supported.

[0165] In this way, multiple TRPs can simultaneously transmit their respective downlink reference signals on partially or completely identical time-frequency resources and fulfill their respective missions. For example, TRP#1 can transmit SSB for beam scanning, and TRP#2 can transmit CSI-RS for time-frequency tracking.

[0166] After receiving signals transmitted by multiple TRPs on the same time-frequency resources, the UE needs to decompose the signal into a downlink reference signal and / or a decoded downlink channel. To correctly decompose the signal, the network device needs to configure or indicate at least one of the following information to the UE. The UE uses the following information configured or indicated by the network device as auxiliary content input to a SIP receiver or CNN model, which then decomposes the signal to obtain the downlink reference signal and / or the decoded downlink channel.

[0167] First, the network device configures or indicates the time-frequency position information of the reference signal of the superposition space to the terminal device.

[0168] The network device can configure or indicate to the terminal device the time-frequency position information of each reference signal in the overlapping space, such as the time-frequency position information of CSI-RS and SSB; the terminal device can calculate the overlapping time-frequency position between different reference signals based on the time-frequency position information of each reference signal.

[0169] For example, when different TRPs transmit CSI-RS and SSB respectively on the same time-frequency resources, the network device needs to inform the UE of the following time-frequency position information of the downlink reference signal for each TRP by layer:

[0170] The first layer reference signal (RS) is the CSI-RS, and the network device can indicate it to the UE in one of the following ways:

[0171] (1) Configure the time-frequency resources of periodic CSI-RS through Radio Resource Control (RRC) signaling;

[0172] (2) Configure the time-frequency resources of CSI-RS through RRC signaling, and then activate / deactivate semi-persistent CSI-RS through MAC CE signaling;

[0173] (3) Configure the time-frequency resources of CSI-RS through RRC signaling, and then schedule aperiodic CSI-RS through DCI.

[0174] The second-layer RS ​​is a periodic SSB, and the network device may indicate to the UE by configuring the time-frequency resources of the periodic SSB through RRC signaling.

[0175] The first-layer RS ​​and the second-layer RS ​​are downlink reference signals sent by different TRPs respectively.

[0176] For example, when different TRPs transmit CSI-RS and CSI-RS respectively on the same time-frequency resources, the network device needs to inform the UE of the time-frequency position information of the downlink reference signal of each TRP by layer:

[0177] The first layer RS ​​is the CSI-RS, which the network device indicates to the UE in one of the following ways:

[0178] (1) Configure the time-frequency resources of periodic CSI-RS through RRC signaling;

[0179] (2) Configure the time-frequency resources of CSI-RS through RRC signaling, and then activate / deactivate semi-persistent CSI-RS through MAC CE signaling;

[0180] (3) Configure the time-frequency resources of CSI-RS through RRC signaling, and then schedule aperiodic CSI-RS through DCI.

[0181] The second layer RS ​​is the CSI-RS, which the network device indicates to the UE in one of the following ways:

[0182] (1) Configure the time-frequency resources of periodic CSI-RS through RRC signaling;

[0183] (2) Configure the time-frequency resources of CSI-RS through RRC signaling, and then activate / deactivate semi-persistent CSI-RS through MAC CE signaling;

[0184] (3) Configure the time-frequency resources of CSI-RS through RRC signaling, and then schedule aperiodic CSI-RS through DCI.

[0185] The first-layer RS ​​and the second-layer RS ​​are downlink reference signals sent by different TRPs respectively.

[0186] For example, when different TRPs transmit SSB and SSB respectively on the same time-frequency resources, the network device needs to inform the UE of the time-frequency position information of the downlink reference signal of each TRP by layer:

[0187] The first layer RS ​​is a periodic SSB, and the network device may indicate to the UE by configuring the time-frequency resources of the periodic SSB through RRC signaling.

[0188] The second-layer RS ​​is a periodic SSB, and the network device may indicate to the UE by configuring the time-frequency resources of the periodic SSB through RRC signaling.

[0189] The first-layer RS ​​and the second-layer RS ​​are downlink reference signals sent by different TRPs respectively.

[0190] Second, the network device configures or indicates power information of the reference signal in the superposition space to the terminal device.

[0191] Because transmissions are performed on the same time-frequency resources, the UE receives signal powers that are superimposed. It is impossible to infer the reference signal received power from a specific TRP from the total received power, thus requiring signaling support from the network network (NW). Assuming the UE can measure the path loss of each TRP using a non-superimposed reference signal (a conventional non-SIP reference signal), the NW only needs to inform the UE of the power ratio of the downlink reference signals sent between each TRP. The UE can then roughly calculate the power ratio of the received superimposed reference signals.

[0192] The transmit power ratio of the reference signal between TRPs may be implemented by signaling in at least one of the following ways:

[0193] (1) The NW configures the transmit power ratio between the two reference signals through RRC signaling;

[0194] (2) The NW configures a set of transmit power ratios between reference signals through RRC signaling, and then activates one of the transmit power ratios using MAC CE signaling;

[0195] (3) The NW configures a set of transmit power ratios between reference signals through RRC signaling, then activates a subset of the transmit power ratios in the set through MAC CE signaling, and finally indicates a transmit power ratio in the subset through DCI. This transmit power ratio is the transmit power ratio between the two reference signals indicated by the NW to the UE.

[0196] (4) The NW directly uses MAC CE signaling to indicate the transmit power ratio between the two reference signals;

[0197] (5) The NW directly uses DCI to indicate the transmit power ratio between the two reference signals.

[0198] For example, the power unit of TRP#1 sending CSI-RS#1 is EPRE#1, and the power unit of TRP#2 sending SSB#2 is EPRE#2. Then the transmission power ratio between the two signals is (EPRE#1 / EPRE#2), and the unit is generally dB value, that is, 10log(EPRE#1 / EPRE#2).

[0199] Based on the transmission power ratio, the path loss of TRP#1 (such as denoted as Path Loss#1), and the path loss of TRP#2 (such as denoted as Path Loss#2), the receiving power ratio between CSI-RS#1 and SSB#2 can be calculated as EPRE#1*Path Loss#1 / (EPRE#2*Path Loss#2).

[0200] Third, the network device configures or instructs the terminal device on the spatial information of the reference signal and / or channel transmitted by each TRP on the same time-frequency resources.

[0201] For example, the spatial information may include: from which transmission direction (related to the transmit spatial filter) the CSI-RS or SSB sent by different TRPs comes, and which receive beam (related to the receive spatial filter) the UE uses to perform the corresponding reception. The use of different receive spatial filters will affect the size of the reference signal receive power. For example, when the UE considers that the downlink reference signal from a certain TRP is interference, the receive spatial filter selected as much as possible makes the power of the useful signal as high as possible and the power of the superimposed interference reference signal as low as possible, thereby maximizing the SINR and improving the quality of received detection or estimation.

[0202] In NR technology, the NW can use the TCI state to indicate the transmit spatial filter for CSI-RS, PDCCH, and PDSCH. Which receive spatial filter the UE uses is an implementation issue for the UE, which provides an opportunity for AI / ML-based SIP receivers or CNN models to select the receive spatial filter.

[0203] In addition, for SSB, it is itself the root of QCL (quasi co-location relationship). An SSB itself represents a certain transmit spatial filter, so no additional TCI state indication is required.

[0204] The UE uses the above information configured or indicated by the network device to process the received reference signal using an AI / ML-based SIP receiver or CNN model. As shown in Figure 6, the UE can use an AI / ML-based SIP receiver or CNN model to process multiple reference signals received on the same time-frequency resources, input the received signal (or superimposed signal, superimposed reference signal, SIP signal) into the SIP receiver or CNN model, and combine one or more of the following information as auxiliary information, and also input the auxiliary information into the SIP receiver or CNN model, as shown in Figure 6.

[0205] (1) Superimpose the time-frequency position information of the reference signal;

[0206] (2) Superimpose the transmit power ratio information and path loss information (PL information) of the reference signal;

[0207] (3) Transmit spatial filter information superimposed on the reference signal.

[0208] The SIP receiver or CNN model uses the auxiliary information to decompose multiple reference signals received and transmitted on the same time-frequency resources, and can estimate a first downlink reference signal (such as RS#1 in Figure 6) and a second downlink reference signal (such as RS#2 in Figure 6). The first downlink reference signal may include a CSI-RS or an SSB, and the second downlink reference signal may also include a CSI-RS or an SSB.

[0209] Example 2:

[0210] In this embodiment, in a multi-TRP scenario, one TRP transmits a downlink reference signal, such as a CSI-RS or SSB; another TRP transmits a downlink channel, such as a PDCCH or PDSCH, with an accompanying DMRS layer. The downlink reference signals and channels from different TRPs may partially overlap (Partial SIP) or completely overlap (SIP), meaning that the time-frequency resources occupied by the downlink reference signals or downlink channels transmitted by different TRPs are partially or completely the same.

[0211] Figure 7 is a schematic diagram of a transmission scheme in which PDSCH, DMRS, and SSB partially overlap in Example 2 of the present application. As shown in Figure 7, PDSCH and DMRS are transmitted by one TRP, and SSB is transmitted by another TRP, and the two TRPs are transmitted separately on the same time-frequency resources. In the example shown in Figure 7, the PDSCH and DMRS transmitted by the same TRP occupy the same time-frequency resources, which partially overlap with the time-frequency resources occupied by the SSB transmitted by another TRP.

[0212] In Figure 7, the downlink transmission of multiple TRPs forms a data layer and two reference signal layers. Conceptually, this can be understood as the superposition space of data and reference signals. It can be simply divided into:

[0213] The first type is reference signal superposition space: when multiple layers of reference signals are completely or partially superimposed, it can be understood as a reference signal superposition space (greater than 1 layer).

[0214] The second type is the superposition space of reference signals and channels: when multiple layers of reference signals are completely or partially superimposed on one or more layers of channels, it can be understood as a composite space (greater than one layer) of superimposed reference signals and channels.

[0215] The above-mentioned concept of superposition space is also applicable to similar situations in other embodiments.

[0216] Since there may be conventional UEs in the network, that is, UEs that do not support partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes. If a UE is equipped with an AI / ML-based SIP receiver, that is, the UE has the ability to support partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes, then the UE can report the capability to the NW, such as reporting to the base station. In one implementation, the terminal device sends first information, which indicates whether the terminal device supports partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes.

[0217] In this embodiment, the UE capabilities indicated by the first information may include one or more of the following, but are not limited to the following:

[0218] (1) Whether partial or complete overlapping transmission of the control channel or data channel with the CSI-RS is supported;

[0219] (2) Whether partial or complete overlapping transmission of the control channel or data channel with the SSB is supported.

[0220] The technical advantage of this embodiment is that when a TRP sends a downlink reference signal (e.g., for mobility measurement), according to the prior art, a measurement gap is configured for the UE, during which the UE cannot transmit or receive. However, using the solution proposed in the embodiment of the present application, reference signals and channels from different TRPs are allowed to be transmitted on the same time-frequency resources, and the UE can still receive downlink transmissions from another TRP, i.e., PDCCH and / or PDSCH.

[0221] After receiving signals transmitted by multiple TRPs on the same time-frequency resources, the UE needs to decompose the signal into a downlink reference signal and / or a decoded downlink channel. To correctly decompose the signal, the network device needs to configure or indicate at least one of the following information to the UE. The UE uses the following information configured or indicated by the network device as auxiliary content input to a SIP receiver or CNN model, which then decomposes the signal to obtain the downlink reference signal and / or the decoded downlink channel.

[0222] First, the network device configures or indicates the time-frequency position information of the reference signal of the superposition space to the terminal device.

[0223] The network device can configure or indicate to the terminal the time-frequency position information of each reference signal in the overlapping space, such as the time-frequency position information of the reference signals CSI-RS / SSB and DMRS. The terminal device can calculate the overlapping time-frequency positions of different reference signals based on the time-frequency position information of each reference signal.

[0224] For example, when different TRPs transmit CSI-RS and DMRS respectively on the same time-frequency resources, the network device needs to inform the UE of the time-frequency position information of the downlink reference signal for each TRP by layer:

[0225] The first layer reference signal RS is a CSI-RS, and the network device can indicate it to the UE in one of the following ways:

[0226] (1) Configure the time-frequency resources of periodic CSI-RS through RRC signaling;

[0227] (2) Configure the time-frequency resources of CSI-RS through RRC signaling, and then activate / deactivate semi-persistent CSI-RS through MAC CE signaling;

[0228] (3) Configure the time-frequency resources of CSI-RS through RRC signaling, and then schedule aperiodic CSI-RS through DCI.

[0229] The second layer RS ​​is DMRS, and the network device can indicate it to the UE in one of the following ways:

[0230] (1) Configure DMRS time-frequency resources through RRC signaling;

[0231] (2) Configure the time-frequency resources of DMRS through RRC signaling, and then schedule DMRS through DCI.

[0232] The first-layer RS ​​and the second-layer RS ​​are downlink reference signals sent by different TRPs respectively.

[0233] For example, when different TRPs transmit SSB and DMRS respectively on the same time-frequency resources, the network device needs to inform the UE of the time-frequency position information of the downlink reference signal for each TRP by layer:

[0234] The first layer RS ​​is a periodic SSB, and the network device may indicate to the UE by configuring the time-frequency resources of the periodic SSB through RRC signaling.

[0235] The second layer RS ​​is DMRS, and the network device can indicate it to the UE in one of the following ways:

[0236] (1) Configure DMRS time-frequency resources through RRC signaling;

[0237] (2) Configure the time-frequency resources of DMRS through RRC signaling, and then schedule DMRS through DCI.

[0238] The first-layer RS ​​and the second-layer RS ​​are downlink reference signals sent by different TRPs respectively.

[0239] Second, the network device configures or indicates to the terminal device the transmission power ratio information between the reference signals and the reference signals in the superposition space, and / or the transmission power ratio information between the reference signal and the channel.

[0240] It should be noted that DMRS and PDSCH use the same analog beamforming (if any) and precoding. Assuming that DMRS and PDSCH use the same or fixed offset (such as 3dB) transmit power that is pre-configured or indicated, and pass through the same channel, the receive power at the UE still maintains the pre-configured ratio, that is, 0dB (same transmit power) or 3dB (pre-configured power offset).

[0241] Similarly, this embodiment assumes that the UE can estimate the path loss from each TRP to the UE from other downlink reference signals of multiple TRPs, such as the path loss reference signal (PL RS). On this basis, the NW can use signaling to inform the UE of the transmit power ratio between the first-layer DMRS and the second-layer CSI-RS or SSB; based on the transmit power ratio, the UE can roughly estimate the receive power ratio between each layer in the received superposition space.

[0242] The transmission power ratio of the reference signal between TRPs can be achieved through signaling in at least one of the following ways.

[0243] (1) The NW configures the transmit power ratio between the two reference signals through RRC signaling;

[0244] (2) The NW configures a set of transmit power ratios between reference signals through RRC signaling, and then activates one of the transmit power ratios using MAC CE signaling;

[0245] (3) The NW configures a set of transmit power ratios between reference signals through RRC signaling, then activates a subset of the transmit power ratios in the set through MAC CE signaling, and finally indicates a transmit power ratio in the subset through DCI. This transmit power ratio is the transmit power ratio between the two reference signals indicated by the NW to the UE.

[0246] (4) The NW directly uses MAC CE signaling to indicate the transmit power ratio between the two reference signals;

[0247] (5) The NW directly uses DCI to indicate the transmit power ratio between the two reference signals.

[0248] For example, the power unit of DMRS#1 sent by TRP#1 is EPRE#1, the power unit of PDSCH#1 sent by TRP#1 is EPRE#2, and the power unit of SSB#2 sent by TRP#2 is EPRE#3. The power ratio between PDSCH and its associated DMRS can be given by RRC pre-configuration or DCI dynamic indication, for example, 0dB, that is, EPRE#1 / EPRE#2=1. In addition, the power ratio between DMRS and SSB is (EPRE#1 / EPRE#3), and the unit is generally dB value, that is, 10log(EPRE#1 / EPRE#3).

[0249] Based on the transmission power ratio, the path loss of TRP#1 (such as denoted as Path Loss#1), and the path loss of TRP#2 (such as denoted as Path Loss#2), the receiving power ratio between DMRS#1 and SSB#2 can be calculated = EPRE#1*Path Loss#1 / (EPRE#3*Path Loss#2).

[0250] Third, the network device configures or instructs the terminal device on the spatial information of the reference signal and / or channel transmitted by each TRP on the same time-frequency resources.

[0251] In this embodiment, the transmit spatial filter for the DMRS and PDSCH sent by TRP#1 is consistent, but it is often different from the transmit spatial filter for the CSI-RS / SSB sent by TRP#2. The UE will use the corresponding receive beam (i.e., receive spatial filter) for reception. Because using different receive spatial filters affects the reference signal and channel receive power, it also affects the performance of the SIP receiver.

[0252] The UE, using the above information configured or indicated by the network device, can use an AI / ML-based SIP receiver or CNN model to process multiple reference signals and / or channels received and transmitted on the same time-frequency resources. As shown in Figure 8, the UE can use an AI / ML-based SIP receiver or CNN model to process the received signal, input the received signal (or superimposed signal, superimposed reference signal, SIP signal) into the SIP receiver or CNN model; and combine one or more of the following information as auxiliary information, and also input the auxiliary information into the SIP receiver or CNN model:

[0253] (1) Superimpose the time-frequency position information of the reference signal and the time-frequency position information of the PDSCH;

[0254] (2) Superimpose the transmission power ratio information of the reference signal, the transmission power ratio information between DMRS and PDSCH, and the path loss information (PL information);

[0255] (3) Transmit spatial filter information superimposed on the reference signal.

[0256] The AI / ML SIP receiver estimates the first reference signal (DMRS), the second reference signal (CSI-RS or SSB) from the superimposed space, and decodes the first data channel (PDSCH).

[0257] An AI / ML receiver or CNN model is pre-trained to learn how to distinguish between different signals and channels in a specific configuration. Therefore, a plausible interpretation of an AI / ML SIP receiver or CNN model is that it first separates the DMRS from the spatially superimposed reference signal and channel, obtains a channel estimate for one of the TRPs, and then decodes the PDSCH associated with that DMRS. Finally, it recovers and subtracts the contributions of the PDSCH and DMRS from the received SIP signal to obtain an estimate of the reference signal transmitted by the other TRP, in this case, the SSB.

[0258] Example 3:

[0259] In this embodiment, downlink reference signals from different TRPs are multiplexed into the same reference signal layer in an orthogonal or quasi-orthogonal manner. One TRP transmits a downlink channel, and the downlink reference signals from different TRPs and the downlink channel form an overlay space. This overlay space includes a reference signal layer and a data layer. The reference signal layer corresponds to the downlink reference signal, and the data layer corresponds to the downlink channel.

[0260] Figure 9 is a schematic diagram of a transmission scheme in which a DMRS and other downlink reference signals are multiplexed on an RS layer in accordance with embodiment 3 of the present application. As shown in Figure 9, the DMRS from TRP#1 and the SSB from TRP#2 are orthogonally multiplexed on the same RS layer in a TDM manner. In addition to the time division multiplexing (TDM) multiplexing method, in some embodiments, it can also be an orthogonal multiplexing method of frequency division multiplexing (FDM) or code division multiplexing (CDM). In addition, if the UE uses a specific receiving beam to reduce the mutual interference between the transmit spatial filters from multiple TRPs, then the space division multiplexing (SDM) method can be used. The downlink reference signal and downlink channel transmitted by TRP#1 and TRP#2 constitute an overlay space, which includes two layers, namely the RS layer and the data layer, wherein the RS layer corresponds to the DMRS from TRP#1 and the SSB from TRP#2, and the data layer corresponds to the downlink channel from TRP#1.

[0261] In this embodiment, if a UE is equipped with an AI / ML-based SIP receiver, that is, the UE is capable of supporting partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes, then the UE can report this capability to the NW, such as to the base station. In one implementation, the terminal device sends first information indicating whether the terminal device supports partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes.

[0262] In this embodiment, the UE capabilities indicated by the first information may include one or more of the following, but are not limited to the following:

[0263] (1) Whether TDM transmission of DMRS and CSI-RS or SSB is supported;

[0264] (2) Whether FDM transmission of DMRS and CSI-RS or SSB is supported;

[0265] (3) Whether CDM transmission of DMRS and CSI-RS or SSB is supported;

[0266] (4) Whether SDM transmission of DMRS and CSI-RS or SSB is supported;

[0267] (5) Whether the superimposed transmission of PDSCH and CSI-RS or SSB is supported.

[0268] In this way, when the downlink reference signals are orthogonal or quasi-orthogonal (such as TDM, CDM, FDM or SDM), the complexity of the AI / ML SIP receiver or CNN model can be reduced, and it is easier to decode the superimposed reference signals.

[0269] The AI / ML SIP receiver or CNN model can separate the RS layer and the data layer, provided that some necessary information is known to the AI / ML SIP receiver or CNN model. Specifically, the network device can configure or indicate at least one of the following information for the UE; the UE uses the following information configured or indicated by the network device as auxiliary content input to the SIP receiver or CNN model, and the SIP receiver or CNN model decomposes the downlink reference signal and / or downlink channel transmitted by at least two network nodes on the same time-frequency resources to obtain the downlink reference signal and / or decoded downlink channel.

[0270] First, the network device configures or indicates to the terminal device the time-frequency position information of the reference signal in the superposition space and the multiplexing method between the reference signals.

[0271] For example, the network device may configure or indicate the time-frequency position information of each reference signal in the superposition space to the terminal device, such as the time-frequency position information of CSI-RS / SSB and DMRS.

[0272] For example, as shown in Figure 9, when the DMRS from TRP#1 and the SSB from TRP#2 are multiplexed into the same RS layer in a time division multiplexing manner, the network device indicates the time-frequency position information of the DMRS and the time-frequency position information of the SSB to the UE respectively:

[0273] For DMRS, the network device may indicate it to the UE in one of the following ways:

[0274] (1) Configure DMRS time-frequency resources through RRC signaling;

[0275] (2) Configure the time-frequency resources of DMRS through RRC signaling, and then schedule DMRS through DCI.

[0276] For periodic SSB, the network device may indicate to the UE by configuring the time-frequency resources of the periodic SSB through RRC signaling.

[0277] For another example, when DMRS and CSI-RS from different TRPs are multiplexed into the same RS layer in a time division multiplexing manner, the network device indicates the time-frequency position information of the DMRS and the time-frequency position information of the CSI-RS to the UE respectively:

[0278] For DMRS, the network device may indicate it to the UE in one of the following ways:

[0279] (1) Configure DMRS time-frequency resources through RRC signaling;

[0280] (2) Configure the time-frequency resources of DMRS through RRC signaling, and then schedule DMRS through DCI.

[0281] For CSI-RS, the network device may indicate it to the UE in one of the following ways:

[0282] (1) Configure the time-frequency resources of periodic CSI-RS through RRC signaling;

[0283] (2) Configure the time-frequency resources of CSI-RS through RRC signaling, and then activate / deactivate semi-persistent CSI-RS through MAC CE signaling;

[0284] (3) The time-frequency resources of CSI-RS are configured through RRC signaling, and then the aperiodic CSI-RS is scheduled through DCI (indicating the time slot relative to the DCI).

[0285] Second, the network device configures or indicates the power ratio between the reference signals in the reference signal layer to the terminal device.

[0286] For example, the network device configures or instructs the terminal device on the power ratio of downlink reference signals sent between each TRP, and the UE can roughly calculate the power ratio of the received downlink reference signals.

[0287] The transmit power ratio of the downlink reference signal may be implemented by signaling in at least one of the following ways:

[0288] (1) The NW configures the transmit power ratio between the two reference signals through RRC signaling;

[0289] (2) The NW configures a set of transmit power ratios between reference signals through RRC signaling, and then activates one of the transmit power ratios using MAC CE signaling;

[0290] (3) The NW configures a set of transmit power ratios between reference signals through RRC signaling, then activates a subset of the transmit power ratios in the set through MAC CE signaling, and finally indicates a transmit power ratio in the subset through DCI. This transmit power ratio is the transmit power ratio between the two reference signals indicated by the NW to the UE.

[0291] (4) The NW directly uses MAC CE signaling to indicate the transmit power ratio between the two reference signals;

[0292] (5) The NW directly uses DCI to indicate the transmit power ratio between the two reference signals.

[0293] Between the reference signal layer and the data layer, the power ratio between DMRS and PDSCH can be configured and / or indicated so that the AI / ML SIP receiver or CNN model can calculate the power ratio on each RE, some of which are the superposition of DMRS and PDSCH, and some of which are the superposition between SSB / CSI-RS RE and PDSCH. It is worth repeating that the UE has already estimated the different path losses from multiple TRPs to the UE in advance through PL RS, so that the power ratio between each layer on different REs can be calculated at the AI / ML SIP receiver or CNN model.

[0294] Third, the network device configures or instructs the terminal device on the spatial information of the signals and / or channels transmitted by each TRP on the same time-frequency resources.

[0295] Considering transmissions in different TRPs, the DMRS in the reference signal layer and the PDSCH in the data layer use the same transmit spatial filter. The SSB or CSI-RS in the reference signal layer (from another TRP) uses a different transmit spatial filter. This filter information can be indicated to the UE via TCI state or SSB information and used as input to the model.

[0296] The UE uses the above information configured or indicated by the network device to use an AI / ML-based SIP receiver or CNN model to process signals and / or channels transmitted by at least two network nodes on the same time-frequency resources. For the input and output relationship of the SIP receiver or CNN model, please refer to Figure 8 of Example 2. The difference from Example 2 is that in this embodiment, DMRS and other reference signals (such as SSB or CSI-RS) occupy the same reference signal layer in an orthogonal manner.

[0297] One explanation for the AI / ML SIP receiver is that the model first estimates the channel from the superimposed DMRS, then uses the channel to coherently decode the PDSCH, then recovers and eliminates the impact of the PDSCH from the REs between the PDSCH and SSB superimposed, and finally estimates the SSB.

[0298] Example 4:

[0299] In this embodiment, multiple TRPs transmit downlink reference signals and control channels on partially overlapping or completely overlapping RE resources.

[0300] Figure 10 is a schematic diagram of the transmission scheme in which DMRS and PDSCH of different TRPs are superimposed on different RS layers and data layers in Example 4 of the present application. As shown in Figure 10, on the time-frequency resources, two layers of DMRS reference signal layers and two layers of PDSCH data layers are superimposed to form a superposition space for data channels and reference signals. In the example of Figure 10, the situation of complete overlap between the layers is shown, and this embodiment also supports the situation of incomplete overlap (i.e., partial overlap).

[0301] Figure 11 is a schematic diagram of the transmission scheme in which DMRSs of different TRPs are superimposed on the same RS layer and PDSCHs of different TRPs are superimposed on different data layers in Example 4 of the present application. As shown in Figure 11, on the time-frequency resources, a reference signal layer of one layer of DMRS and a data layer of two layers of PDSCH are superimposed to form an overlapping space for data channels and reference signals; wherein, DMRSs from different TRPs are multiplexed to the reference signal layer using time division multiplexing (TDM). DMRSs from different TRPs can be multiplexed to the same reference signal layer in an orthogonal manner (CDM / TDM / FDM) or a quasi-orthogonal manner (SDM).

[0302] In this embodiment, if a UE is equipped with an AI / ML-based SIP receiver, that is, the UE is capable of supporting partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes, then the UE can report this capability to the NW, such as to the base station. In one implementation, the terminal device sends first information indicating whether the terminal device supports partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes.

[0303] In this embodiment, the UE capabilities indicated by the first information may include one or more of the following, but are not limited to the following:

[0304] (1) Whether the transmission of the control channel and other control channels is partially or completely overlapped is supported;

[0305] (2) Whether to support partial or complete overlapping transmission of control channels and data channels;

[0306] (3) Whether the transmission of data channels with partial or complete overlap of other data channels is supported;

[0307] (4) Whether the transmission of control channel or data channel with partial or complete overlap of DMRS is supported.

[0308] In this way, downlink scheduling of each TRP can be performed independently. Even if there is overlap between PDSCH and DMRS, the AI / ML SIP receiver or CNN model on the UE side can separate different channels and reference signals by inputting the information into the model.

[0309] An AI / ML SIP receiver or CNN model can separate the channel and reference signal, provided that some necessary information is known to the SIP receiver or CNN model. Specifically, the network device can configure or indicate at least one of the following information to the UE; the UE uses the following information configured or indicated by the network device as auxiliary input to the SIP receiver or CNN model, which then decomposes the downlink reference signal and / or downlink channel transmitted by at least two network nodes on the same time-frequency resources to obtain the downlink reference signal and / or decoded downlink channel.

[0310] First, the network device configures or indicates the time-frequency position information of the reference signal of the superposition space and / or the downlink channel to the terminal device.

[0311] For example, the network device configures or indicates RE resource allocation information of each layer in the overlay space to the terminal device, such as the RE resources occupied by the data layer (such as PDSCH) and its associated reference signal layer (DMRS).

[0312] For example, both the first-layer RS ​​and the second-layer RS ​​are DMRS. The network device indicates the time-frequency position information of the DMRS in each RS layer to the UE respectively. The indication method can be one of the following methods:

[0313] (1) Configure DMRS time-frequency resources through RRC signaling;

[0314] (2) Configure the time-frequency resources of DMRS through RRC signaling, and then schedule DMRS through DCI.

[0315] The network device may also configure or indicate to the terminal device the RE resources occupied by the data in each data layer.

[0316] Second, the network device configures or indicates to the terminal device the transmission power ratio information between the reference signals and the reference signals in the superposition space, and / or the transmission power ratio information between the reference signal and the channel.

[0317] For example, the network device configures or indicates to the terminal device the power ratio between each PDSCH and the DMRS associated with the PDSCH, and / or the power ratio between DMRSs.

[0318] It should be noted that DMRS and PDSCH use the same analog beamforming (if any) and precoding. Assuming that DMRS and PDSCH use the same or fixed offset (such as 3dB) transmit power that is pre-configured or indicated, and pass through the same channel, the receive power at the UE still maintains the pre-configured ratio, that is, 0dB (same transmit power) or 3dB (pre-configured power offset).

[0319] This embodiment assumes that the UE can estimate the path loss from each TRP to the UE from other downlink reference signals of multiple TRPs, such as a path loss reference signal (PL RS). For example, the NW can use signaling to inform the UE of the transmit power ratio between the first layer DMRS and the second layer DMRS; based on the transmit power ratio, the UE can roughly estimate the receive power ratio between each layer in the received superposition space.

[0320] The transmit power ratio of the downlink reference signal may be implemented by signaling in at least one of the following ways:

[0321] (1) The NW configures the transmit power ratio between the two reference signals through RRC signaling;

[0322] (2) The NW configures a set of transmit power ratios between reference signals through RRC signaling, and then activates one of the transmit power ratios using MAC CE signaling;

[0323] (3) The NW configures a set of transmit power ratios between reference signals through RRC signaling, then activates a subset of the transmit power ratios in the set through MAC CE signaling, and finally indicates a transmit power ratio in the subset through DCI. This transmit power ratio is the transmit power ratio between the two reference signals indicated by the NW to the UE.

[0324] (4) The NW directly uses MAC CE signaling to indicate the transmit power ratio between the two reference signals;

[0325] (5) The NW directly uses DCI to indicate the transmit power ratio between the two reference signals.

[0326] Between the reference signal layer and the data layer, the power ratio between DMRS and PDSCH can be configured and / or indicated, so that the AI / ML SIP receiver or CNN model can calculate the power ratio on each RE. It is worth repeating that the UE has already estimated the different path losses from multiple TRPs to the UE in advance through PL RS, so that the power ratio between each layer on different REs can be calculated at the AI / ML SIP receiver or CNN model.

[0327] For example, the power unit of DMRS#1 sent by TRP#1 is EPRE RS layer#1, and the unit power of PDSCH#1 sent by TRP#1 is EPRE data layer#1. Then the power ratio between DMRS#1 sent by TRP#1 and PDSCH is EPRE RS layer#1 / EPRE data layer#1.

[0328] In addition, the power unit for transmitting DMRS#2 in TRP#2 is EPRE RS layer#2. The NW needs to inform the UE of the transmit power ratio between different DMRSs. For example, the transmit power ratio between DMRS#1 and DMRS#2 is EPRE RS layer#1 / EPRE RS layer 2. Based on this transmit power ratio, the path loss of TRP#1 (e.g., Path Loss#1), and the path loss of TRP#2 (e.g., Path Loss#2), the received power ratio between DMRS#1 and DMRS#2 can be calculated as EPRE RS layer#1*Path Loss#1 / (EPRE RS layer 2*Path Loss#2).

[0329] Third, the network device configures or instructs the terminal device on the spatial information of the signals and / or channels transmitted by each TRP on the same time-frequency resources.

[0330] The transmit spatial filter information used by each TRP to send PDSCH and the associated DMRS can be indicated to the UE as input to the SIP receiver or CNN model. This information can be indicated to the UE in the form of TCI state index or SSB index.

[0331] The UE, using the above information configured or indicated by the network device, can use an AI / ML-based SIP receiver or CNN model to process signals and / or channels transmitted by at least two network nodes on the same time-frequency resources. As shown in Figure 12, the UE can use an AI / ML-based SIP receiver or CNN model to process the received signal, input the received signal (also called a superimposed signal, superimposed reference signal, or SIP signal) into the SIP receiver or CNN model; and combine one or more of the following information as auxiliary information, and also input the auxiliary information into the SIP receiver or CNN model:

[0332] (1) Superimpose the reference signal and the time-frequency position information of the PDSCH;

[0333] (2) Superimpose the transmit power ratio information between reference signals, the transmit power ratio information between the reference signal and the channel, and the path loss information (PL information);

[0334] (3) Transmit spatial filter information superimposed on the reference signal.

[0335] One explanation for this AI / ML receiver or CNN model is that it uses the power ratio information input into the model to separate one or more layers of DMRS, and then estimates multiple TRP channels to the UE through the DMRS. After separating the DMRS, the superimposed PDSCH is separated and decoded using the respective channels, namely TRP#1 and TRP#2.

[0336] FIG13 is a schematic flow chart of a communication method 1300 according to an embodiment of the present application. The method can optionally be applied to any of the systems or application scenarios shown in FIG1-FIG3, but is not limited thereto. The method includes at least part of the following content.

[0337] S1310. The network device sends one or more of the following information to the terminal device, so that the terminal device obtains a downlink reference signal and / or a downlink channel from a first signal, where the first signal includes downlink reference signals and / or downlink channels transmitted by at least two network nodes on the same time-frequency resources:

[0338] Time-frequency position information of a downlink reference signal and / or a downlink channel;

[0339] Power information of a downlink reference signal and / or a downlink channel;

[0340] Transmit spatial filter information of a downlink reference signal and / or a downlink channel.

[0341] The network equipment may include a base station or a TRP.

[0342] The above information sent by the network device to the terminal device can be used as auxiliary information used by the terminal device when decomposing the first signal, so that the terminal device can use the auxiliary information to decompose the downlink reference signal and / or downlink channel transmitted by at least two network nodes on the same time-frequency resources.

[0343] In one embodiment, time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes partially overlap or completely overlap.

[0344] In one embodiment, it further includes:

[0345] The network device receives first information sent by the terminal device, where the first information indicates whether the terminal device supports partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes.

[0346] By receiving the first information, the network device can feedback at least one of the time-frequency position information of the downlink reference signal and / or downlink channel, the power information of the downlink reference signal and / or downlink channel, and the transmission spatial filter information of the downlink reference signal and / or downlink channel to the terminal device that supports partial or complete overlap of the time-frequency resources of the downlink reference signal and / or downlink channel transmitted by at least two network nodes, so that the terminal device can decompose the downlink reference signal and / or downlink channel from the downlink reference signal and / or downlink channel transmitted by at least two network nodes on the same time-frequency resources.

[0347] In one embodiment, the network device sends the downlink reference signal and / or the time-frequency position information of the downlink channel to the terminal device, including:

[0348] The network device sends a first configuration or a first indication to the terminal device, where the first configuration or the first indication is used to configure or indicate time-frequency position information of a downlink reference signal and / or a downlink channel.

[0349] In one embodiment, the first configuration or the first indication includes one or more of RRC signaling, MAC CE signaling, and DCI.

[0350] In one embodiment, when the downlink reference signal includes a periodic CSI-RS, the network device sends a first configuration or a first indication to the terminal device, including:

[0351] The network device sends RRC signaling to the terminal device, and the RRC signaling configures periodic CSI-RS time-frequency resources.

[0352] In one embodiment, when the downlink reference signal includes a semi-persistent CSI-RS, the network device sends a first configuration or a first indication to the terminal device, including:

[0353] The network device sends RRC signaling to the terminal device, where the RRC signaling configures time-frequency resources of the CSI-RS, where the time-frequency resources of the CSI-RS configured by the RRC signaling include time-frequency resources of a semi-persistent CSI-RS;

[0354] The network device sends MAC CE signaling to the terminal device, and the MAC CE signaling activates or deactivates the semi-persistent CSI-RS.

[0355] In one embodiment, when the downlink reference signal includes an aperiodic CSI-RS, the network device sends a first configuration or a first indication to the terminal device, including:

[0356] The network device sends RRC signaling to the terminal device, where the RRC signaling configures time-frequency resources of the CSI-RS, where the time-frequency resources of the CSI-RS configured by the RRC signaling include time-frequency resources of the aperiodic CSI-RS;

[0357] The network device sends DCI to the terminal device, and the DCI schedules the non-periodic CSI-RS.

[0358] In one implementation, when the downlink reference signal includes a DMRS, the network device sends a first configuration or a first indication to the terminal device, including:

[0359] The network device sends RRC signaling to the terminal device, where the RRC signaling configures time-frequency resources of the DMRS, where the time-frequency resources of the DMRS configured by the RRC signaling include time-frequency resources of the aperiodic DMRS;

[0360] The network device sends DCI to the terminal device, and the DCI schedules the non-periodic DMRS.

[0361] Through the above-mentioned various methods, the network device can provide the terminal device with the time-frequency position information of the downlink reference signal and / or the downlink channel, so that the terminal device can use the information to decompose the superimposed signal.

[0362] In one embodiment, the power information of the downlink reference signal and / or the downlink channel includes one or more of the following:

[0363] a transmit power ratio between downlink reference signals and / or downlink channels;

[0364] A path loss for each of the at least two network nodes.

[0365] In one implementation, the power information of the downlink reference signal and / or the downlink channel includes: a received power ratio between the downlink reference signal and / or the downlink channel.

[0366] In one embodiment, the received power ratio between the downlink reference signal and / or the downlink channels is determined according to one or more of the following:

[0367] a transmit power ratio between downlink reference signals and / or downlink channels;

[0368] A path loss for each of the at least two network nodes.

[0369] In one embodiment, the transmit power ratio between the downlink reference signal and / or downlink channels includes one or more of the following:

[0370] The transmit power ratio between each downlink reference signal;

[0371] The transmit power ratio between the downlink reference signal and the downlink channel.

[0372] In one embodiment, the network device sends power information of a downlink reference signal and / or a downlink channel to the terminal device, including: the network device sends a second configuration or a second indication to the terminal device, and the second configuration or the second indication is used to configure or indicate the transmission power ratio between the downlink reference signal and / or the downlink channel.

[0373] In one embodiment, the second configuration or the second indication includes one or more of RRC signaling, MAC CE signaling, and DCI.

[0374] In one embodiment, the network device sends the second configuration or the second indication to the terminal device, including:

[0375] The network device sends RRC signaling to the terminal device, and the RRC signaling configures the downlink reference signal and / or the transmission power ratio between downlink channels.

[0376] In one embodiment, the network device sends the second configuration or the second indication to the terminal device, including:

[0377] The network device sends RRC signaling to the terminal device, and the RRC signaling configures a set of transmit power ratios;

[0378] The network device sends MAC CE signaling to the terminal device, and the MAC CE signaling activates one of a set of transmit power ratios.

[0379] In one embodiment, the network device sends the second configuration or the second indication to the terminal device, including:

[0380] The network device sends RRC signaling to the terminal device, and the RRC signaling configures a set of transmit power ratios;

[0381] The network device sends MAC CE signaling to the terminal device, and the MAC CE signaling activates a subset of a set of transmit power ratios;

[0382] The network device sends a DCI to the terminal device, where the DCI indicates a transmit power in the subset.

[0383] In one embodiment, the network device sends the second configuration or the second indication to the terminal device, including:

[0384] The network device sends MAC CE signaling to the terminal device, where the MAC CE indicates a transmission power ratio between downlink reference signals and / or downlink channels.

[0385] In one embodiment, the network device sends the second configuration or the second indication to the terminal device, including:

[0386] The network device sends DCI to the terminal device, where the DCI indicates a downlink reference signal and / or a transmission power ratio between downlink channels.

[0387] Through the above-mentioned various methods, the network device can provide the terminal device with a downlink reference signal and / or a transmission power ratio between downlink channels, so that the terminal device can use the information to decompose the superimposed signal.

[0388] In one embodiment, downlink reference signals and / or downlink channels transmitted by at least two network nodes constitute an overlay space, and the overlay space includes a reference signal layer and / or a data layer; wherein,

[0389] The reference signal layer corresponds to the downlink reference signal;

[0390] The data layer corresponds to the downlink channel.

[0391] In one implementation, downlink reference signals transmitted by different network nodes are multiplexed in the same reference signal layer.

[0392] In one embodiment, the multiplexing manner of downlink reference signals transmitted by different network nodes includes one or more of time division multiplexing, frequency division multiplexing, code division multiplexing, and space division multiplexing.

[0393] In one implementation, downlink reference signals transmitted by different network nodes correspond to different reference signal layers.

[0394] In one embodiment, the reference signal layer and the data layer in the overlay space partially overlap or completely overlap.

[0395] In one embodiment, the downlink channel includes a downlink control channel and / or a downlink data channel.

[0396] For a specific example of the network device executing method 1300 of this embodiment, reference can be made to the relevant description of the network device, such as a base station, in the above method 400 , which will not be repeated here for the sake of brevity.

[0397] In one embodiment, the present application also proposes a model training method, including:

[0398] Train the neural network model using multiple training samples and corresponding labels;

[0399] The training sample includes a first signal, where the first signal includes a downlink reference signal and / or a downlink channel transmitted by at least two network nodes on the same time-frequency resources;

[0400] The training samples also include at least one of time-frequency position information of the downlink reference signal and / or downlink channel, power information of the downlink reference signal and / or downlink channel, and transmit spatial filter information of the downlink reference signal and / or downlink channel.

[0401] In one embodiment, the label corresponding to the training sample includes a downlink reference signal and / or a downlink channel. For example, the label corresponding to the training sample includes a downlink reference signal and / or a demodulated downlink channel.

[0402] The specific contents of the various information included in the training samples and labels can be referred to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0403] The present application also provides a terminal device. FIG14 is a schematic block diagram of a terminal device 1400 according to an embodiment of the present application. The terminal device 1400 may include:

[0404] The first transceiver module 1410 is configured to receive a first signal, where the first signal includes a downlink reference signal and / or a downlink channel transmitted by at least two network nodes on the same time-frequency resources;

[0405] The first processing module 1420 is configured to obtain a downlink reference signal and / or a downlink channel from the first signal by using one or more of the following information:

[0406] Time-frequency position information of a downlink reference signal and / or a downlink channel;

[0407] Power information of a downlink reference signal and / or a downlink channel;

[0408] Transmit spatial filter information of a downlink reference signal and / or a downlink channel.

[0409] In one embodiment, the first processing module 1420 is configured to:

[0410] The first signal is input into the neural network model, and one or more items of the above information are input into the neural network model, and the neural network model outputs a downlink reference signal and / or a downlink channel.

[0411] In one embodiment, time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes partially overlap or completely overlap.

[0412] In one embodiment, the first transceiver module 1410 is further used to send first information, which indicates whether the terminal device supports partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes.

[0413] In one implementation, the first transceiver module 1410 is further configured to receive one or more items of the above information.

[0414] In one embodiment, the first transceiver module 1410 is configured to receive a first configuration or a first indication, where the first configuration or the first indication is used to configure or indicate time-frequency position information of downlink reference signals and / or downlink channels for different network nodes.

[0415] In one embodiment, the first configuration or the first indication includes one or more of RRC signaling, MAC CE signaling, and DCI.

[0416] In one implementation, when the downlink reference signal includes a periodic CSI-RS, the first transceiver module 1410 is configured to:

[0417] Receive RRC signaling, which configures periodic CSI-RS time-frequency resources.

[0418] In one implementation, when the downlink reference signal includes a semi-persistent CSI-RS, the first transceiver module 1410 is configured to:

[0419] receiving RRC signaling, where the RRC signaling configures time-frequency resources for a CSI-RS, where the time-frequency resources for the CSI-RS configured by the RRC signaling include time-frequency resources for a semi-persistent CSI-RS;

[0420] Receive MAC CE signaling, which activates or deactivates semi-persistent CSI-RS.

[0421] In one implementation, when the downlink reference signal includes an aperiodic CSI-RS, the first transceiver module 1410 is configured to:

[0422] Receiving RRC signaling, where the RRC signaling configures time-frequency resources for a CSI-RS, where the time-frequency resources for the CSI-RS configured by the RRC signaling include time-frequency resources for an aperiodic CSI-RS;

[0423] A DCI is received, where the DCI schedules an aperiodic CSI-RS.

[0424] In one implementation, when the downlink reference signal includes a DMRS, the first transceiver module 1410 is configured to:

[0425] Receiving RRC signaling, where the RRC signaling configures time-frequency resources of a DMRS, where the time-frequency resources of the DMRS configured by the RRC signaling include time-frequency resources of an aperiodic DMRS;

[0426] A DCI is received, where the DCI schedules an aperiodic DMRS.

[0427] In one embodiment, the power information of the downlink reference signal and / or the downlink channel includes one or more of the following:

[0428] a transmit power ratio between downlink reference signals and / or downlink channels;

[0429] A path loss for each of the at least two network nodes.

[0430] In one implementation, the power information of the downlink reference signal and / or the downlink channel includes: a received power ratio between the downlink reference signal and / or the downlink channel.

[0431] In one embodiment, the received power ratio between the downlink reference signal and / or the downlink channels is determined according to one or more of the following:

[0432] a transmit power ratio between downlink reference signals and / or downlink channels;

[0433] A path loss for each of the at least two network nodes.

[0434] In one embodiment, the transmit power ratio between the downlink reference signal and / or downlink channels includes one or more of the following:

[0435] The transmit power ratio between each downlink reference signal;

[0436] The transmit power ratio between the downlink reference signal and the downlink channel.

[0437] In one implementation, the first transceiver module 1410 is configured to receive a second configuration or a second indication, where the second configuration or the second indication is used to configure or indicate a downlink reference signal and / or a transmission power ratio between downlink channels.

[0438] In one embodiment, the second configuration or the second indication includes one or more of RRC signaling, MAC CE signaling, and DCI.

[0439] In one embodiment, the first transceiver module 1410 is configured to:

[0440] RRC signaling is received, where the RRC signaling configures a downlink reference signal and / or a transmit power ratio between downlink channels.

[0441] In one embodiment, the first transceiver module 1410 is configured to:

[0442] receiving RRC signaling, the RRC signaling configuring a set of transmit power ratios;

[0443] MAC CE signaling is received, the MAC CE signaling activating a transmit power ratio from a set of transmit power ratios.

[0444] In one embodiment, the first transceiver module 1410 is configured to:

[0445] receiving RRC signaling, the RRC signaling configuring a set of transmit power ratios;

[0446] receiving MAC CE signaling that activates a subset of a set of transmit power ratios;

[0447] A DCI is received, the DCI indicating a transmit power in the subset.

[0448] In one embodiment, the first transceiver module 1410 is configured to:

[0449] Receive MAC CE signaling, where the MAC CE indicates a transmit power ratio between downlink reference signals and / or downlink channels.

[0450] In one embodiment, the first transceiver module 1410 is configured to:

[0451] A DCI is received, where the DCI indicates a downlink reference signal and / or a transmission power ratio between downlink channels.

[0452] In one embodiment, downlink reference signals and / or downlink channels transmitted by at least two network nodes constitute an overlay space, and the overlay space includes a reference signal layer and / or a data layer; wherein,

[0453] The reference signal layer corresponds to the downlink reference signal;

[0454] The data layer corresponds to the downlink channel.

[0455] In one implementation, downlink reference signals transmitted by different network nodes are multiplexed in the same reference signal layer.

[0456] In one embodiment, the multiplexing manner of downlink reference signals transmitted by different network nodes includes one or more of time division multiplexing, frequency division multiplexing, code division multiplexing, and space division multiplexing.

[0457] In one implementation, downlink reference signals transmitted by different network nodes correspond to different reference signal layers.

[0458] In one embodiment, the reference signal layer and the data layer in the overlay space partially overlap or completely overlap.

[0459] In one embodiment, the downlink channel includes a downlink control channel and / or a downlink data channel.

[0460] The terminal device 1400 of the embodiment of the present application can implement the corresponding functions of the terminal device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to the various modules (sub-modules, units or components, etc.) in the terminal device 1400 can be found in the corresponding descriptions in the above-mentioned method embodiments, which will not be repeated here. It should be noted that the functions described by the various modules (sub-modules, units or components, etc.) in the terminal device 1400 of the embodiment of the application can be implemented by different modules (sub-modules, units or components, etc.) or by the same module (sub-module, unit or component, etc.).

[0461] The present application also provides a network device. FIG15 is a schematic block diagram of a network device 1500 according to an embodiment of the present application. The network device 1500 may include:

[0462] The second transceiver module 1510 is configured to send one or more of the following information, where the one or more of the following information is used to obtain a downlink reference signal and / or a downlink channel from a first signal, where the first signal includes downlink reference signals and / or downlink channels transmitted by at least two network nodes on the same time-frequency resources:

[0463] Time-frequency position information of a downlink reference signal and / or a downlink channel;

[0464] Power information of a downlink reference signal and / or a downlink channel;

[0465] Transmit spatial filter information of a downlink reference signal and / or a downlink channel.

[0466] In one embodiment, time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes partially overlap or completely overlap.

[0467] In one embodiment, the second transceiver module 1510 is also used to receive first information sent by the terminal device, which first information indicates whether the terminal device supports partial or complete overlap of time-frequency resources of downlink reference signals and / or time-frequency resources of downlink channels transmitted by at least two network nodes.

[0468] In one embodiment, the second transceiver module 1510 is used to send a first configuration or a first indication to the terminal device, where the first configuration or the first indication is used to configure or indicate time-frequency position information of downlink reference signals and / or downlink channels for different network nodes.

[0469] In one embodiment, the first configuration or the first indication includes one or more of RRC signaling, MAC CE signaling, and DCI.

[0470] In one implementation, when the downlink reference signal includes a periodic CSI-RS, the second transceiver module 1510 is configured to:

[0471] Send RRC signaling to the terminal device, which configures periodic CSI-RS time-frequency resources.

[0472] In one implementation, when the downlink reference signal includes a semi-persistent CSI-RS, the second transceiver module 1510 is configured to:

[0473] Sending RRC signaling to the terminal device, where the RRC signaling configures time-frequency resources for the CSI-RS, where the time-frequency resources for the CSI-RS configured by the RRC signaling include time-frequency resources for a semi-persistent CSI-RS;

[0474] Send MAC CE signaling to the terminal device, and the MAC CE signaling activates or deactivates the semi-persistent CSI-RS.

[0475] In one implementation, when the downlink reference signal includes an aperiodic CSI-RS, the second transceiver module 1510 is configured to:

[0476] Sending RRC signaling to the terminal device, where the RRC signaling configures time-frequency resources for the CSI-RS, where the time-frequency resources for the CSI-RS configured by the RRC signaling include time-frequency resources for the aperiodic CSI-RS;

[0477] A DCI is sent to the terminal device, where the DCI schedules the non-periodic CSI-RS.

[0478] In one implementation, when the downlink reference signal includes a DMRS, the second transceiver module 1510 is configured to:

[0479] Sending RRC signaling to the terminal device, where the RRC signaling configures time-frequency resources of the DMRS, where the time-frequency resources of the DMRS configured by the RRC signaling include time-frequency resources of the aperiodic DMRS;

[0480] A DCI is sent to the terminal device, where the DCI schedules the non-periodic DMRS.

[0481] In one embodiment, the power information of the downlink reference signal and / or the downlink channel includes one or more of the following:

[0482] a transmit power ratio between downlink reference signals and / or downlink channels;

[0483] A path loss for each of the at least two network nodes.

[0484] In one implementation, the power information of the downlink reference signal and / or the downlink channel includes: a received power ratio between the downlink reference signal and / or the downlink channel.

[0485] In one embodiment, the received power ratio between the downlink reference signal and / or the downlink channels is determined according to one or more of the following:

[0486] a transmit power ratio between downlink reference signals and / or downlink channels;

[0487] A path loss for each of the at least two network nodes.

[0488] In one embodiment, the transmit power ratio between the downlink reference signal and / or downlink channels includes one or more of the following:

[0489] The transmit power ratio between each downlink reference signal;

[0490] The transmit power ratio between the downlink reference signal and the downlink channel.

[0491] In one embodiment, the second transceiver module 1510 is used to send a second configuration or a second indication to the terminal device, where the second configuration or the second indication is used to configure or indicate a transmission power ratio between a downlink reference signal and / or downlink channels.

[0492] In one embodiment, the second configuration or the second indication includes one or more of RRC signaling, MAC CE signaling, and DCI.

[0493] In one embodiment, the second transceiver module 1510 is configured to:

[0494] RRC signaling is sent to the terminal device, where the RRC signaling configures the transmission power ratio between the downlink reference signal and / or downlink channels.

[0495] In one embodiment, the second transceiver module 1510 is configured to:

[0496] Sending RRC signaling to the terminal device, the RRC signaling configuring a set of transmit power ratios;

[0497] A MAC CE signaling is sent to the terminal device, where the MAC CE signaling activates one of a set of transmit power ratios.

[0498] In one embodiment, the second transceiver module 1510 is configured to:

[0499] Sending RRC signaling to the terminal device, the RRC signaling configuring a set of transmit power ratios;

[0500] Sending MAC CE signaling to the terminal device, where the MAC CE signaling activates a subset of a set of transmit power ratios;

[0501] A DCI is sent to the terminal device, where the DCI indicates a transmit power in the subset.

[0502] In one embodiment, the second transceiver module 1510 is configured to:

[0503] Send MAC CE signaling to the terminal device, where the MAC CE indicates the transmission power ratio between the downlink reference signal and / or downlink channels.

[0504] In one embodiment, the second transceiver module 1510 is configured to:

[0505] A DCI is sent to a terminal device, where the DCI indicates a downlink reference signal and / or a transmission power ratio between downlink channels.

[0506] In one embodiment, downlink reference signals and / or downlink channels transmitted by at least two network nodes constitute an overlay space, and the overlay space includes a reference signal layer and / or a data layer; wherein,

[0507] The reference signal layer corresponds to the downlink reference signal;

[0508] The data layer corresponds to the downlink channel.

[0509] In one implementation, downlink reference signals transmitted by different network nodes are multiplexed in the same reference signal layer.

[0510] In one embodiment, the multiplexing manner of downlink reference signals transmitted by different network nodes includes one or more of time division multiplexing, frequency division multiplexing, code division multiplexing, and space division multiplexing.

[0511] In one implementation, downlink reference signals transmitted by different network nodes correspond to different reference signal layers.

[0512] In one embodiment, the reference signal layer and the data layer in the overlay space partially overlap or completely overlap.

[0513] In one embodiment, the downlink channel includes a downlink control channel and / or a downlink data channel.

[0514] The network device 1500 of the embodiment of the present application can implement the corresponding functions of the network device in the aforementioned method embodiment. The corresponding processes, functions, implementation methods and beneficial effects of each module (sub-module, unit or component, etc.) in the network device 1500 can be found in the corresponding description in the above method embodiment, and will not be repeated here. It should be noted that the functions described in the various modules (sub-module, unit or component, etc.) in the network device 1500 of the embodiment of the application can be implemented by different modules (sub-module, unit or component, etc.) or by the same module (sub-module, unit or component, etc.).

[0515] In one embodiment, the present application also provides a model training device, including:

[0516] A training module, used to train a neural network model using multiple training samples and corresponding labels;

[0517] The training sample includes a first signal, where the first signal includes a downlink reference signal and / or a downlink channel transmitted by at least two network nodes on the same time-frequency resource;

[0518] The training sample also includes at least one of time-frequency position information of a downlink reference signal and / or a downlink channel, power information of the downlink reference signal and / or the downlink channel, and transmit spatial filter information of the downlink reference signal and / or the downlink channel.

[0519] In one embodiment, the label corresponding to the training sample includes a downlink reference signal and / or a downlink channel.

[0520] Figure 16 is a schematic structural diagram of a communication device 1600 according to an embodiment of the present application. The communication device 1600 includes a processor 1610, which can call and execute a computer program from a memory to enable the communication device 1600 to implement the method in the embodiment of the present application.

[0521] In one embodiment, the communication device 1600 may further include a memory 1620. The processor 1610 may call and execute a computer program from the memory 1620 to enable the communication device 1600 to implement the method in the embodiment of the present application.

[0522] The memory 1620 may be a separate device independent of the processor 1610 , or may be integrated into the processor 1610 .

[0523] In one embodiment, the communication device 1600 may further include a transceiver 1630 , and the processor 1610 may control the transceiver 1630 to communicate with other devices. Specifically, the transceiver 1630 may send information or data to other devices, or receive information or data sent by other devices.

[0524] The transceiver 1630 may include a transmitter and a receiver. The transceiver 1630 may further include an antenna, and the number of antennas may be one or more.

[0525] In one embodiment, the communication device 1600 may be a network device of an embodiment of the present application, and the communication device 1600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0526] In one embodiment, the communication device 1600 may be a terminal device of an embodiment of the present application, and the communication device 1600 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0527] 17 is a schematic structural diagram of a chip 1700 according to an embodiment of the present application. The chip 1700 includes a processor 1710, which can call and execute a computer program from a memory to implement the method according to the embodiment of the present application.

[0528] In one embodiment, the chip 1700 may further include a memory 1720. The processor 1710 may call and execute a computer program from the memory 1720 to implement the method executed by the terminal device or the network device in the embodiment of the present application.

[0529] The memory 1720 may be a separate device independent of the processor 1710 , or may be integrated into the processor 1710 .

[0530] In one embodiment, the chip 1700 may further include an input interface 1730. The processor 1710 may control the input interface 1730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0531] In one embodiment, the chip 1700 may further include an output interface 1740. The processor 1710 may control the output interface 1740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0532] In one embodiment, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0533] In one embodiment, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0534] The chips used in the network device and the terminal device may be the same chip or different chips.

[0535] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0536] The processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor mentioned above may be a microprocessor or any conventional processor, etc.

[0537] The memory mentioned above may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM).

[0538] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0539] FIG18 is a schematic block diagram of a communication system 1800 according to an embodiment of the present application. The communication system 1800 includes a terminal device 1810 and a network device 1820 .

[0540] Terminal device 1810 is used to receive a first signal, which includes a downlink reference signal and / or a downlink channel transmitted by at least two network nodes on the same time-frequency resources; and obtain the downlink reference signal and / or the downlink channel from the first signal using one or more of the following information: time-frequency position information of the downlink reference signal and / or the downlink channel; power information of the downlink reference signal and / or the downlink channel; and transmission spatial filter information of the downlink reference signal and / or the downlink channel.

[0541] Network device 1820 is used to send one or more of the following information to a terminal device, so that the terminal device can obtain a downlink reference signal and / or a downlink channel from a first signal, where the first signal includes downlink reference signals and / or downlink channels transmitted by at least two network nodes on the same time-frequency resources: time-frequency position information of the downlink reference signal and / or downlink channel; power information of the downlink reference signal and / or downlink channel; and transmission spatial filter information of the downlink reference signal and / or downlink channel.

[0542] The terminal device 1810 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1820 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not described here in detail.

[0543] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function in accordance with the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode to another website, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0544] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0545] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0546] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A communication method, comprising: A terminal device receives a first signal, where the first signal includes a downlink reference signal and / or a downlink channel transmitted by at least two network nodes on the same time-frequency resource; The terminal device obtains the downlink reference signal and / or the downlink channel from the first signal by using one or more of the following information: Time-frequency position information of the downlink reference signal and / or the downlink channel; Power information of the downlink reference signal and / or the downlink channel; Transmission spatial filter information of the downlink reference signal and / or the downlink channel.

2. The method according to claim 1, wherein The terminal device obtains the downlink reference signal and / or the downlink channel from the first signal by using one or more of the following information, including: The terminal device inputs the first signal into a neural network model, and inputs one or more of the information into the neural network model, and the neural network model outputs the downlink reference signal and / or the downlink channel.

3. The method according to claim 1 or 2, wherein The time-frequency resources of the downlink reference signals transmitted by the at least two network nodes and / or the time-frequency resources of the downlink channels partially or completely overlap.

4. The method according to any one of claims 1-3, further comprising The terminal device sends first information, where the first information indicates whether the terminal device supports partial or complete overlap of the time-frequency resources of the downlink reference signals transmitted by at least two network nodes and / or the time-frequency resources of the downlink channels.

5. The method according to any one of claims 1-4, further comprising that the terminal device receives one or more of the information.

6. The method according to claim 5, wherein, The terminal device receives the time-frequency position information of the downlink reference signal and / or the downlink channel, including: The terminal device receives a first configuration or a first indication, where the first configuration or the first indication is used to configure or indicate the time-frequency position information of the downlink reference signal and / or the downlink channel for different network nodes.

7. The method according to claim 6, wherein, The first configuration or the first indication includes one or more of radio resource control (RRC) signaling, media access control element (MAC) CE signaling, and downlink control information (DCI).

8. The method according to claim 6 or 7, when the downlink reference signal includes a periodic channel state information-reference signal (CSI-RS), the terminal device receives the first configuration or the first indication, including: The terminal device receives RRC signaling, and the RRC signaling configures the time-frequency resources of the periodic CSI-RS.

9. The method according to claim 6 or 7, when the downlink reference signal includes a semi-persistent CSI-RS, the terminal device receives the first configuration or the first indication, including: The terminal device receives RRC signaling, and the RRC signaling configures the time-frequency resources of the CSI-RS, and the time-frequency resources of the CSI-RS configured by the RRC signaling include the time-frequency resources of the semi-persistent CSI-RS; The terminal device receives MAC CE signaling, and the MAC CE signaling activates or deactivates the semi-persistent CSI-RS.

10. For the method according to claim 6 or 7, when the downlink reference signal includes an aperiodic CSI-RS, the receiving of the first configuration or the first indication by the terminal device includes: The terminal device receives RRC signaling that configures the time-frequency resources of the CSI-RS, and the time-frequency resources of the CSI-RS configured by the RRC signaling include the time-frequency resources of the aperiodic CSI-RS; The terminal device receives DCI that schedules the aperiodic CSI-RS.

11. For the method according to claim 6 or 7, when the downlink reference signal includes a demodulation reference signal DMRS, the receiving of the first configuration or the first indication by the terminal device includes: The terminal device receives RRC signaling that configures the time-frequency resources of the DMRS, and the time-frequency resources of the DMRS configured by the RRC signaling include the time-frequency resources of the aperiodic DMRS; The terminal device receives DCI that schedules the aperiodic DMRS.

12. According to the method of any one of claims 5-11, wherein, The power information of the downlink reference signal and / or the downlink channel includes one or more of the following: The transmission power ratio between the downlink reference signal and / or the downlink channel; The path loss of each network node among the at least two network nodes.

13. According to the method as claimed in any one of claims 5-11, wherein, The power information of the downlink reference signal and / or the downlink channel includes: the reception power ratio between the downlink reference signal and / or the downlink channel.

14. The method according to claim 13, wherein, The reception power ratio between the downlink reference signal and / or the downlink channel is determined according to one or more of the following: The transmission power ratio between the downlink reference signal and / or the downlink channel; The path loss of each network node among the at least two network nodes.

15. The method according to claim 12 or 14, wherein, The transmission power ratio between the downlink reference signal and / or the downlink channel includes one or more of the following: The transmission power ratio between each downlink reference signal; The transmission power ratio between the downlink reference signal and the downlink channel.

16. According to the method as claimed in any one of claims 5-15, wherein, The receiving of the power information of the downlink reference signal and / or the downlink channel by the terminal device includes: The terminal device receives a second configuration or a second indication that is used to configure or indicate the transmission power ratio between the downlink reference signal and / or the downlink channel.

17. The method according to claim 16, wherein, The second configuration or the second indication includes one or more of RRC signaling, MAC CE signaling, and DCI.

18. The method according to claim 16 or 17, wherein The receiving of the second configuration or the second indication by the terminal device includes: The terminal device receives RRC signaling that configures the transmission power ratio between the downlink reference signal and / or the downlink channel.

19. The method according to claim 16 or 17, wherein, The receiving of the second configuration or the second indication by the terminal device includes: The terminal device receives RRC signaling that configures a set of transmission power ratios; The terminal device receives MAC CE signaling that activates one transmission power ratio in the set of transmission power ratios.

20. The method according to claim 16 or 17, wherein The receiving of the second configuration or the second indication by the terminal device includes: The terminal device receives RRC signaling that configures a set of transmission power ratios; The terminal device receives MAC CE signaling that activates a subset in the set of transmission power ratios; The terminal device receives DCI, and the DCI indicates a transmission power of one of the subsets.

21. The method according to claim 16 or 17, wherein The terminal device receives a second configuration or a second indication, including: The terminal device receives MAC CE signaling, and the MAC CE indicates a transmission power ratio between the downlink reference signal and / or the downlink channel.

22. The method according to claim 16 or 17, wherein The terminal device receives a second configuration or a second indication, including: The terminal device receives DCI, and the DCI indicates a transmission power ratio between the downlink reference signal and / or the downlink channel.

23. According to the method of any one of claims 1-22, wherein The downlink reference signals and / or downlink channels transmitted by the at least two network nodes form a superimposed space, and the superimposed space includes a reference signal layer and / or a data layer; wherein, The reference signal layer corresponds to the downlink reference signal; The data layer corresponds to the downlink channel.

24. The method according to claim 23, wherein, The downlink reference signals transmitted by different network nodes are multiplexed on the same reference signal layer.

25. The method according to claim 24, wherein, The multiplexing manner of the downlink reference signals transmitted by the different network nodes includes one or more of time division multiplexing, frequency division multiplexing, code division multiplexing, and space division multiplexing.

26. The method according to claim 23, wherein The downlink reference signals transmitted by different network nodes correspond to different reference signal layers.

27. The method according to any one of claims 23-26, wherein The reference signal layer and the data layer in the superimposed space are partially superimposed or completely superimposed.

28. According to the method of any one of claims 1-27, wherein The downlink channel includes a downlink control channel and / or a downlink data channel.

29. A communication method, including: The network device sends one or more of the following information to the terminal device for the terminal device to obtain a downlink reference signal and / or a downlink channel from a first signal, where the first signal includes downlink reference signals and / or downlink channels transmitted by at least two network nodes on the same time-frequency resource: Time-frequency position information of the downlink reference signal and / or the downlink channel; Power information of the downlink reference signal and / or the downlink channel; Transmit spatial filter information of the downlink reference signal and / or the downlink channel.

30. The method according to claim 29, wherein, The time-frequency resources of the downlink reference signals transmitted by the at least two network nodes and / or the time-frequency resources of the downlink channels are partially overlapped or completely overlapped.

31. The method according to claim 29 or 30, further including, The network device receives first information sent by the terminal device, and the first information indicates whether the terminal device supports that the time-frequency resources of the downlink reference signals transmitted by at least two network nodes and / or the time-frequency resources of the downlink channels are partially or completely overlapped. The network device sends the time-frequency position information of the downlink reference signal and / or the downlink channel to the terminal device, including:

32. The method according to any one of claims 29 - 31, wherein, The network device sends a first configuration or a first indication to the terminal device, and the first configuration or the first indication is used to configure or indicate the time-frequency position information of the downlink reference signal and / or the downlink channel for different network nodes. The first configuration or the first indication includes one or more of RRC signaling, MAC CE signaling, and DCI.

33. The method according to claim 32, wherein, 34. The method according to claim 32 or 33, in the case where the downlink reference signal includes a periodic CSI-RS, the network device sends the first configuration or the first indication to the terminal device, including: ​ The network device sends RRC signaling to the terminal device, and the RRC signaling configures the time-frequency resources of the periodic CSI-RS.

35. For the method according to claim 32 or 33, in the case where the downlink reference signal includes semi-persistent CSI-RS, the network device sending the first configuration or the first indication to the terminal device includes: The network device sends RRC signaling to the terminal device, the RRC signaling configures the time-frequency resources of the CSI-RS, and the time-frequency resources of the CSI-RS configured by the RRC signaling include the time-frequency resources of the semi-persistent CSI-RS; The network device sends MAC CE signaling to the terminal device, and the MAC CE signaling activates or deactivates the semi-persistent CSI-RS.

36. For the method according to claim 32 or 33, in the case where the downlink reference signal includes aperiodic CSI-RS, the network device sending the first configuration or the first indication to the terminal device includes: The network device sends RRC signaling to the terminal device, the RRC signaling configures the time-frequency resources of the CSI-RS, and the time-frequency resources of the CSI-RS configured by the RRC signaling include the time-frequency resources of the aperiodic CSI-RS; The network device sends DCI to the terminal device, and the DCI schedules the aperiodic CSI-RS.

37. For the method according to claim 32 or 33, in the case where the downlink reference signal includes DMRS, the network device sending the first configuration or the first indication to the terminal device includes: The network device sends RRC signaling to the terminal device, the RRC signaling configures the time-frequency resources of the DMRS, and the time-frequency resources of the DMRS configured by the RRC signaling include the time-frequency resources of the aperiodic DMRS; The network device sends DCI to the terminal device, and the DCI schedules the aperiodic DMRS.

38. The method according to any one of claims 29-37, wherein, The power information of the downlink reference signal and / or the downlink channel includes one or more of the following: The transmission power ratio between the downlink reference signal and / or the downlink channel; The path loss of each network node among the at least two network nodes.

39. The method according to any one of claims 29 - 37, wherein, The power information of the downlink reference signal and / or the downlink channel includes: the reception power ratio between the downlink reference signal and / or the downlink channel.

40. The method according to claim 39, wherein, The reception power ratio between the downlink reference signal and / or the downlink channel is determined according to one or more of the following: The transmission power ratio between the downlink reference signal and / or the downlink channel; The path loss of each network node among the at least two network nodes.

41. The method according to claim 38 or 40, wherein, The transmission power ratio between the downlink reference signal and / or the downlink channel includes one or more of the following: The transmission power ratio between each downlink reference signal; The transmission power ratio between the downlink reference signal and the downlink channel.

42. The method according to any one of claims 38-41, wherein The network device sending the power information of the downlink reference signal and / or the downlink channel to the terminal device includes: The network device sends a second configuration or a second indication to the terminal device, where the second configuration or the second indication is used to configure or indicate a transmission power ratio between the downlink reference signal and / or the downlink channel.

43. The method according to claim 42, wherein, The second configuration or the second indication includes one or more of RRC signaling, MAC CE signaling, and DCI.

44. The method according to claim 42 or 43, wherein, The network device sending the second configuration or the second indication to the terminal device includes: The network device sends RRC signaling to the terminal device, and the RRC signaling configures a transmission power ratio between the downlink reference signal and / or the downlink channel.

45. The method according to claim 42 or 43, wherein, The network device sending the second configuration or the second indication to the terminal device includes: The network device sends RRC signaling to the terminal device, and the RRC signaling configures a set of transmission power ratios; The network device sends MAC CE signaling to the terminal device, and the MAC CE signaling activates one transmission power ratio in the set of transmission power ratios.

46. The method according to claim 42 or 43, wherein, The network device sending the second configuration or the second indication to the terminal device includes: The network device sends RRC signaling to the terminal device, and the RRC signaling configures a set of transmission power ratios; The network device sends MAC CE signaling to the terminal device, and the MAC CE signaling activates a subset of the set of transmission power ratios; The network device sends DCI to the terminal device, and the DCI indicates one transmission power in the subset.

47. The method according to claim 42 or 43, wherein, The network device sending the second configuration or the second indication to the terminal device includes: The network device sends MAC CE signaling to the terminal device, and the MAC CE indicates a transmission power ratio between the downlink reference signal and / or the downlink channel.

48. The method according to claim 42 or 43, wherein, The network device sending the second configuration or the second indication to the terminal device includes: The network device sends DCI to the terminal device, and the DCI indicates a transmission power ratio between the downlink reference signal and / or the downlink channel.

49. The method according to any one of claims 29-48, wherein, The downlink reference signals and / or downlink channels transmitted by at least two network nodes form a superimposed space, and the superimposed space includes a reference signal layer and / or a data layer; where The reference signal layer corresponds to the downlink reference signal; The data layer corresponds to the downlink channel.

50. The method according to claim 49, wherein, The downlink reference signals transmitted by different network nodes are multiplexed on the same reference signal layer.

51. The method according to claim 50, wherein, The multiplexing manner of the downlink reference signals transmitted by different network nodes includes one or more of time division multiplexing, frequency division multiplexing, code division multiplexing, and space division multiplexing.

52. The method according to claim 49, wherein The downlink reference signals transmitted by different network nodes correspond to different reference signal layers.

53. The method according to any one of claims 49 - 52, wherein, The reference signal layer and the data layer in the superimposed space are partially superimposed or completely superimposed.

54. The method according to any one of claims 29 - 53, wherein, The downlink channel includes a downlink control channel and / or a downlink data channel.

55. A model training method, including: Training a neural network model by using a plurality of training samples and corresponding labels; The training samples include a first signal, and the first signal includes downlink reference signals and / or downlink channels transmitted by at least two network nodes on the same time-frequency resource; The training sample further includes at least one of the time-frequency position information of the downlink reference signal and / or the downlink channel, the power information of the downlink reference signal and / or the downlink channel, and the transmit spatial filter information of the downlink reference signal and / or the downlink channel.

56. The method according to claim 55, wherein, The label corresponding to the training sample includes the downlink reference signal and / or the downlink channel.

57. A terminal device, comprising: A first transceiver module, configured to receive a first signal, where the first signal includes a downlink reference signal and / or a downlink channel transmitted by at least two network nodes on the same time-frequency resource; A first processing module, configured to obtain a downlink reference signal and / or a downlink channel from the first signal by using one or more of the following information: The time-frequency position information of the downlink reference signal and / or the downlink channel; The power information of the downlink reference signal and / or the downlink channel; The transmit spatial filter information of the downlink reference signal and / or the downlink channel.

58. A network device, comprising: A second transceiver module, configured to send one or more of the following information to a terminal device, where the one or more of the following information is used for the terminal device to obtain a downlink reference signal and / or a downlink channel from a first signal, and the first signal includes a downlink reference signal and / or a downlink channel transmitted by at least two network nodes on the same time-frequency resource: The time-frequency position information of the downlink reference signal and / or the downlink channel; The power information of the downlink reference signal and / or the downlink channel; The transmit spatial filter information of the downlink reference signal and / or the downlink channel.

59. A model training device, comprising: A training module, configured to train a neural network model by using a plurality of training samples and corresponding labels; The training sample includes a first signal, and the first signal includes a downlink reference signal and / or a downlink channel transmitted by at least two network nodes on the same time-frequency resource; The training sample further includes at least one of the time-frequency position information of the downlink reference signal and / or the downlink channel, the power information of the downlink reference signal and / or the downlink channel, and the transmit spatial filter information of the downlink reference signal and / or the downlink channel.

60. A terminal device, comprising: A transceiver, a processor, and a memory, where the memory is configured to store a computer program, the transceiver is configured to communicate with other devices, and the processor is configured to call and run the computer program stored in the memory, so that the terminal device executes the method according to any one of claims 1 to 28.

61. A network device, comprising: A transceiver, a processor, and a memory, where the memory is configured to store a computer program, the transceiver is configured to communicate with other devices, and the processor is configured to call and run the computer program stored in the memory, so that the network device executes the method according to any one of claims 29 to 54.

62. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 28 or 29 to 54.

63. A computer-readable storage medium for storing a computer program, which when run on a device causes the device to perform the method according to any one of claims 1 to 28 or 29 to 54.

64. A computer program product comprising computer program instructions that cause a computer to perform the method according to any one of claims 1 to 28 or 29 to 54.

65. A computer program that causes a computer to perform the method according to any one of claims 1 to 28 or 29 to 54.

66. A communication system comprising: A terminal device for performing the method according to any one of claims 1 to 28; A network device for performing the method according to any one of claims 29 to 54.

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