Information detection method, terminal device, and network device

Abstract

The present application relates to an information detection method, a terminal device, a network device, a chip, a computer readable storage medium, a computer program product, a computer program, and a communication system. The information detection method comprises: a terminal device detects a first part of a PDCCH to obtain a detection result of the first part; and if the detection result comprises first information, the terminal device detects a second part of the PDCCH on the basis of a first reference signal to obtain downlink control information (DCI), wherein a time-frequency resource occupied by the first reference signal is further used for transmitting other signals other than the first reference signal. Embodiments of the present application can effectively reduce power consumption of PDCCH detection.

Description

Information detection method, terminal device and network device Technical Field

[0001] The present application relates to the field of communications, and more specifically, to an information detection method, terminal equipment, network equipment, chip, computer-readable storage medium, computer program product, computer program, and communication system. Background Art

[0002] In NR (New Radio) systems, the Physical Downlink Control Channel (PDCCH) is transmitted periodically in the time domain. Terminal devices must detect the PDCCH at the time domain location configured by the network device to obtain the terminal device's related DCI (Downlink Control Information). Consideration must be given to reducing the power consumption of terminal devices for PDCCH detection.

[0003] Summary of the Invention

[0004] Embodiments of the present application provide an information detection method, terminal device, network device, chip, computer-readable storage medium, computer program product, computer program, and communication system, which can save power consumption for PDCCH detection.

[0005] The present invention provides an information detection method, including:

[0006] The terminal device detects the first part of the PDCCH and obtains a detection result of the first part;

[0007] If the detection result includes the first information, the terminal device detects the second part of the PDCCH based on the first reference signal to obtain the DCI; wherein the time-frequency resources occupied by the first reference signal are also used to transmit other signals except the first reference signal.

[0008] The present invention provides an information detection method, including:

[0009] The network device sends the PDCCH to the terminal device;

[0010] Among them, PDCCH includes a first part and a second part; the first part is used by the terminal device to determine whether to detect the second part based on the first reference signal to obtain DCI; the time-frequency resources occupied by the first reference signal are also used to transmit other signals besides the first reference signal.

[0011] An embodiment of the present application provides a terminal device, including:

[0012] The first processing unit is used to detect the first part of the PDCCH to obtain a detection result of the first part. If the detection result of the first part includes the first information, the second part of the PDCCH is detected based on the first reference signal to obtain the DCI; wherein the time-frequency resources occupied by the first reference signal are also used to transmit other signals besides the first reference signal.

[0013] An embodiment of the present application provides a network device, including:

[0014] A third communication unit, configured to send a PDCCH to a terminal device;

[0015] Among them, PDCCH includes a first part and a second part; the first part is used by the terminal device to determine whether to detect the second part based on the first reference signal to obtain DCI; the time-frequency resources occupied by the first reference signal are also used to transmit other signals besides the first reference signal.

[0016] 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 performs the above-mentioned information detection method.

[0017] 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 performs the above-mentioned information detection method.

[0018] An embodiment of the present application provides a chip for implementing the above-mentioned information detection method.

[0019] 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 information detection method.

[0020] An embodiment of the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed by a device, the device executes the above-mentioned information detection method.

[0021] An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the above-mentioned information detection method.

[0022] An embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the above-mentioned information detection method.

[0023] An embodiment of the present application provides a communication system, including a terminal device and a network device for executing the above-mentioned information detection method.

[0024] In an embodiment of the present application, the time-frequency resources occupied by the first reference signal are also used to transmit signals other than the first reference signal. Since the detection of the second part in the PDCCH based on the first reference signal is supported, the PDCCH reference signal overhead can be reduced. By determining whether to detect the second part based on the first reference signal according to the detection result of the first part in the PDCCH, unnecessary detection of the second part based on the first reference signal can be avoided, thereby effectively reducing the power consumption of PDCCH detection while saving the PDCCH reference signal overhead. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a schematic diagram of a communication system according to an embodiment of the present application.

[0026] FIG2 is a schematic diagram of a basic working process in a wireless communication system.

[0027] FIG3 is a schematic diagram of a channel estimation and recovery process in a communication system.

[0028] FIG4 is a schematic diagram illustrating several data symbol and pilot symbol resource allocation patterns under different configurations.

[0029] FIG5 is a schematic diagram of a superposition matrix in an embodiment of the present application.

[0030] FIG6 is a schematic diagram of a neuron node.

[0031] Figure 7 is a schematic diagram of a simple fully connected neural network.

[0032] Figure 8 is a schematic diagram of a convolutional neural network.

[0033] Figure 9 is a schematic diagram of a basic LSTM unit structure.

[0034] FIG10 is a schematic diagram of an AI-based channel estimation module.

[0035] FIG11 is a schematic diagram of the REG structure in the NR system.

[0036] FIG12 is a schematic diagram of the CCE structure in the NR system.

[0037] Figure 13 is a schematic diagram of the PDCCH structure in the NR system.

[0038] FIG14 is a schematic flowchart of an information detection method according to an embodiment of the present application.

[0039] FIG15 is a schematic flowchart of an information detection method according to another embodiment of the present application.

[0040] FIG16 is a schematic diagram of an implementation method of Application Example 1 of an embodiment of the present application.

[0041] FIG17 is a schematic diagram of another implementation method of Application Example 1 of an embodiment of the present application.

[0042] FIG18 is a schematic diagram of another implementation method of Application Example 1 of the embodiment of the present application.

[0043] FIG19 is a schematic diagram of application example 2 of an embodiment of the present application.

[0044] FIG20 is a schematic diagram of an implementation method of Application Example 3 of an embodiment of the present application.

[0045] Figure 21 is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0046] Figure 22 is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0047] Figure 23 is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0048] Figure 24 is a schematic block diagram of a network device according to an embodiment of the present application.

[0049] Figure 25 is a schematic block diagram of a communication device according to an embodiment of the present application.

[0050] Figure 26 is a schematic block diagram of a chip according to an embodiment of the present application.

[0051] Figure 27 is a schematic block diagram of a communication system according to an embodiment of the present application. DETAILED DESCRIPTION

[0052] 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.

[0053] 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 Communication (5G) system, Sixth Generation Communication (6G) system or other communication systems.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.).

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] FIG1 exemplarily illustrates a communication system 100. The communication system includes a network device 110 and two terminal devices 120. In one embodiment, the communication system 100 may include multiple network devices 110, and each network device 110 may include a different number of terminal devices 120 within its coverage area, which is not limited in this embodiment of the present application.

[0066] It should be understood that in the embodiments of the present application, a device having a communication function in a network / system may be referred to as a communication device. Taking the communication system shown in Figure 1 as an example, the communication device may include a network device and a terminal device having a communication function. The network device and the terminal device may be specific devices in the embodiments of the present application and will not be described in detail here. The communication device may also include other devices in the communication system, such as a network controller, a mobility management entity, and other network entities, which are not limited in the embodiments of the present application.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] (1) Basic workflow of wireless communication system

[0072] Figure 2 shows a schematic diagram of a basic workflow in a wireless communication system. As shown in Figure 2, the basic workflow in a wireless communication system may generally include:

[0073] At the transmitting end, the transmitter performs channel coding and modulation on the source bit stream to obtain modulated symbols; pilot (i.e., reference signal) symbols are inserted into the modulated symbols for channel estimation and symbol detection at the receiving end, and finally a transmitted signal is formed. The transmitted signal passes through the channel to reach the receiving end.

[0074] At the receiving end, the receiver first uses the pilot to perform channel estimation and feeds back the CSI (Channel State Information) obtained through the channel estimation to the transmitting end through a feedback link. The transmitter uses this information to adjust channel coding, modulation, precoding, and other methods. Finally, the receiver obtains the final recovered bit stream through steps such as symbol detection, demodulation, and channel decoding.

[0075] The above process is a simple illustration. Traditional communication systems also include other modules not listed here, such as resource mapping, precoding, interference cancellation, and CSI measurement. These modules are also designed and implemented separately, and then the independent modules are integrated to form a complete wireless communication system.

[0076] (2) Channel Estimation and Pilot Resource Allocation

[0077] Due to the complexity and time-varying nature of the wireless channel environment, in the aforementioned system, the receiver's estimation and recovery of the wireless channel directly impacts the ultimate data recovery performance. Figure 3 illustrates the channel estimation and recovery process in a communication system. A physical resource block (PRB) consists of multiple resource elements (REs). The transmitter allocates data symbols and specific reference signals (i.e., pilots) known to the receiver, such as the CSI-RS (Channel-State Information Reference Signal) and the DMRS (Demodulation Reference Signal), to different REs within the PRB. During the channel estimation phase, as shown in Figure 3, the receiver uses the least squares (LS) algorithm to estimate the channel information at the RE where the pilot symbol is located based on the real pilot (real reference signal) and the received pilot (received reference signal) after channel transmission. The receiver then uses an interpolation algorithm based on the channel information at this RE to recover the channel information for the entire PRB, which is used for subsequent channel information feedback or data recovery.

[0078] In the 5G NR system, data symbols and pilot symbols are placed on different REs. Figure 4 is a schematic diagram of several data symbol and pilot symbol resource allocation patterns under different configurations. It can be seen that data symbols and pilot symbols are mutually orthogonal in time, frequency, or code division resources. That is, the same RE can only be used to place data symbols or pilot symbols. REs that transmit pilot symbols cannot transmit data, resulting in a waste of system bandwidth. In addition, different pilot densities are required in different wireless environments. For example, when the UE moves at a high speed, the time-varying channel characteristics are faster, and more dense pilot symbols need to be placed in the time domain to ensure the quality of channel estimation.

[0079] In an embodiment of the present application, non-orthogonal pilots (non-orthogonal reference signals) may be used. Non-orthogonal pilots / reference signals may be superimposed and transmitted with data (non-orthogonal transmission), that is, the time-frequency resources occupied by the pilot / reference signal may also be used to transmit data. Such reference signals may also be referred to as non-orthogonal reference signals. This is further described below: Assume that the resources allocated by the system include N subcarriers × M time-domain OFDM (Orthogonal Frequency Division Multiplexing) symbols, for example, including 1 PRB, 1 subband, multiple consecutive PRBs or multiple consecutive subbands, etc. The data matrix transmitted on this resource can be expressed as D∈Q N×M , where Q represents the data symbol set; the pilot matrix transmitted on this resource can be expressed as P∈PN×M , where P represents the pilot symbol set. In the embodiment of the present application, the superposition of the data matrix and the pilot matrix can be considered. Figure 5 is a schematic diagram of the superposition matrix in the embodiment of the present application. As shown in Figure 5, the superposition matrix can be expressed as: S = V⊙D + X⊙P Formula (1)

[0080] Among them, S∈C N×M is the superposition matrix, C represents the set of complex numbers, V is the data weight matrix and V=sqrt(A)∈[0,1] N×M , X is the pilot weight matrix and X=sqrt(1-A)∈[0,1] N×M , A∈[0,1] N×M , sqrt(·) represents square root calculation, and ⊙ represents Hadamard product.

[0081] When the size of the system's allocated resources changes, the weight matrix, data matrix, and pilot matrix also change in equal dimensions. At the receiving end, non-orthogonal pilots can be used to assist the AI ​​receiver in performing joint channel estimation and symbol detection on the received superimposed signal. The pilot weight matrix X, data weight matrix V, and matrix A correspond one-to-one. When X is fixed, matrices V and A are also fixed. The pilot weight matrix X, data weight matrix V, and matrix A can all be represented using patterns. It can be understood that the pattern of X corresponds one-to-one with the patterns of V and A.

[0082] (3) Neural Network

[0083] A neural network is a computational model composed of multiple interconnected neuron nodes. Figure 6 shows a schematic diagram of a neuron node. The connections between a node and other nodes represent the weighted values ​​from input signals to output signals, called weights (such as w1, w2, wn, etc.). Each node performs a weighted summation of different input signals (such as a1, a2, an, etc.) (optionally also summing with bias information b) and outputs the result t through a specific activation function f.

[0084] Figure 7 is a schematic diagram of a simple fully connected neural network. As shown in Figure 7, this fully connected neural network consists of an input layer, hidden layers, and an output layer. By using different connections, weights, and activation functions among multiple neurons, different outputs can be generated, thereby fitting the mapping relationship from input to output. Each node in the previous level is connected to all of its next-level nodes. Fully connected models are also called DNNs (Deep Neural Networks).

[0085] Next, we'll discuss CNNs (Convolutional Neural Networks). Figure 8 is a schematic diagram of a CNN. As shown in Figure 8, the basic structure of a CNN consists of an input layer, multiple convolutional layers, multiple pooling layers, a fully connected layer, and an output layer. Each neuron in the convolutional kernel of a convolutional layer is locally connected to its input. The introduction of a pooling layer extracts the local maximum or average features of a particular layer, effectively reducing network parameters and exploiting local features. This enables the CNN to converge quickly and achieve excellent performance.

[0086] Finally, let's introduce the RNN (Recurrent Neural Network). This type of neural network models sequential data and has achieved remarkable success in natural language processing applications such as machine translation and speech recognition. Specifically, the network memorizes information from past moments and uses it in the calculation of current outputs. This means that nodes in the hidden layers are no longer disconnected but connected, and the input to a hidden layer includes not only the input layer but also the output of the previous hidden layer. The LSTM (Long Short-Term Memory) network is a commonly used type of recurrent neural network. Figure 9 shows a basic LSTM cell structure. Unlike recurrent neural networks, which only consider the most recent state, the LSTM cell state determines which states should be retained and which should be forgotten, addressing the long-term memory limitations of traditional recurrent neural networks.

[0087] (4) Channel Estimation Based on AI (Artificial Intelligence)

[0088] Figure 10 is a schematic diagram of an AI-based channel estimation module. The AI-based channel estimation module is internally implemented as a neural network such as DNN, CNN, etc. The input of the module is the received signal and pilot symbol corresponding to the pilot symbol RE, and the output information is the result of the entire PRB channel estimation. It should be noted here that in addition to the reference signal, the input information of the AI-based channel estimation module can also add other auxiliary information to improve the performance of the AI-based channel estimation and recovery module. For example, these other auxiliary information can be the energy level, delay characteristics, noise characteristics, etc. of the received signal corresponding to the data symbol RE or the entire received signal.

[0089] In practical applications, the network model structure inside the channel estimation module can be flexibly designed based on the various neural network structures in the above-mentioned related technology (III).

[0090] (V) 5G NR PDCCH Design

[0091] 5G NR PDCCH is transmitted periodically in the time domain. Each PDCCH may include downlink control information (DCI) for multiple terminals in the cell. Therefore, the terminal needs to perform blind detection on PDCCHs that may carry DCI related to itself at the time domain location configured by the network device (for example, the base station) to find the DCI related to itself. Even if the base station does not transmit DCI related to this terminal in a certain PDCCH, the terminal must still perform blind detection on this PDCCH. Although this PDCCH detection method achieves high reuse of DCI for all terminals in the cell, it requires a large number of unnecessary blind detections, resulting in high terminal power consumption.

[0092] The basic building block of the 5G NR PDCCH is the REG (Resource Element Group). Figure 11 is a schematic diagram of the REG structure in the NR system. As shown in Figure 11, a REG consists of one symbol in the time domain and 12 subcarriers in the frequency domain, including 12 REs, including three orthogonal reference signal (RS) REs and nine data REs.

[0093] Figure 12 is a schematic diagram of the CCE (Control Channel Element) structure in the NR system. As shown in Figure 12, 6 REGs constitute a CCE. There are three possible structures:

[0094] For a CORESET (control resource set) of 3 OFDM symbols in length, 6 REGs include 3 rows in the time domain and 2 columns in the frequency domain.

[0095] For a CORESET with a length of 2 OFDM symbols, 6 REGs include 2 rows in the time domain and 3 columns in the frequency domain.

[0096] For a CORESET with a length of 1 OFDM symbol, 6 REGs include 1 row in the time domain and 6 columns in the frequency domain.

[0097] Figure 13 shows the PDCCH structure in the NR system. An NR PDCCH consists of N (N = 1, 2, 4, 8, or 16) identical CCEs arranged in the frequency domain. Taking a three-symbol CORESET as an example, the PDCCH structure is shown in Figure 11. N is called the aggregation level. A larger N increases the number of CCE repetitions and improves PDCCH transmission performance, but also consumes more time-frequency resources.

[0098] In related technologies, orthogonal reference signals require exclusive use of certain time-frequency resources, preventing other data from being transmitted on these resources. This results in high reference signal overhead. While channel estimation based on non-orthogonal reference signals can reduce reference signal overhead to zero, the high computational complexity of channel estimation and PDCCH detection also results in higher power consumption for terminal devices. In related technologies, terminal devices must perform channel estimation and detection for each PDCCH that may contain DCI, resulting in high power consumption for terminal detection.

[0099] The technical solutions of the embodiments of the present application are mainly intended to solve at least one of the above-mentioned technical problems.

[0100] FIG14 is a schematic flow chart of an information detection method 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.

[0101] S1410. The terminal device detects the first part of the PDCCH and obtains a detection result of the first part.

[0102] S1420. If the detection result of the first part includes the first information, the terminal device detects the second part of the PDCCH based on the first reference signal to obtain DCI.

[0103] The time-frequency resources occupied by the first reference signal are also used to transmit other signals in addition to the first reference signal. In other words, the first reference signal can be superimposed and transmitted on the time-frequency resources with other signals (e.g., a data signal carrying DCI) (or non-orthogonal transmission). Exemplarily, the first reference signal can be a non-orthogonal reference signal.

[0104] In an embodiment of the present application, the terminal device detects the second part of the PDCCH based on the first reference signal, which may include: the terminal device detects the second part of the PDCCH based on a PDCCH detection method corresponding to the first reference signal.

[0105] Exemplarily, the terminal device may use different detection methods for a PDCCH including a first reference signal and a PDCCH not including the first reference signal; wherein the detection method for the PDCCH including the first reference signal is a PDCCH detection method corresponding to the first reference signal. That is, the terminal device detects the second part of the PDCCH based on the first reference signal, that is, the terminal device determines that the second part of the PDCCH includes the first reference signal, and uses the detection method for the PDCCH including the first reference signal to detect the above-mentioned second part. It can be understood that since the first reference signal and other signals are superimposed and transmitted on the same time-frequency resources, the computational complexity of detecting the second part of the PDCCH based on the first reference signal is relatively high.

[0106] According to the above embodiment, if the terminal device's detection result for the first part of the PDCCH includes the first information, the terminal device detects the second part based on the first reference signal to obtain the DCI. Exemplarily, the first information is predetermined information used by the terminal device to determine whether to detect the second part, and / or used by the terminal device to determine whether to detect the second part based on the first reference signal. For example, the first information may be predetermined data or a sequence.

[0107] In one embodiment, the second part of the PDCCH is configured to include a first reference signal. When the detection result of the first part includes the first information, the terminal device determines that detection of the second part is required; because the second part is configured to include the first reference signal, the terminal device detects the second part based on the first reference signal.

[0108] In another embodiment, the second part in the PDCCH is configured to include the first reference signal, or may not include the first reference signal and include other types of reference signals; when the detection result of the first part includes the first information, the terminal device determines that the second part includes the first reference signal, or the terminal device determines that the second part needs to be detected and determines that the second part includes the first reference signal, therefore, the terminal device detects the second part based on the first reference signal.

[0109] Corresponding to the above method, FIG15 is a schematic flow chart of an information detection method according to another 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:

[0110] Step S1510: The network device sends a PDCCH to the terminal device;

[0111] Among them, PDCCH includes a first part and a second part; the first part is used by the terminal device to determine whether to detect the second part based on the first reference signal to obtain DCI; the time-frequency resources occupied by the first reference signal are also used to transmit other signals besides the first reference signal.

[0112] Optionally, when the first part of the PDCCH includes the first information, it is used to instruct the terminal device to detect the second part based on the first reference signal. That is, the first part may include the first information or may not include the first information. When the first part includes the first information, the terminal device's detection result of the first part should include the first information. In this case, the terminal device detects the second part based on the first reference signal.

[0113] Since it supports detection of the second part of the PDCCH based on the first reference signal, a large amount of PDCCH reference signal overhead can be saved, and a larger PDCCH channel capacity and higher PDCCH transmission efficiency can be achieved. However, the second part needs to be detected through high-complexity calculations, and the terminal power consumption is relatively high. In the method of the embodiment of the present application, whether to detect the second part based on the first reference signal is determined according to the detection result of the first part in the PDCCH, which can avoid unnecessary detection of the second part based on the first reference signal. Specifically, through the low-complexity detection of the first part of the PDCCH, the terminal device can know in a very short time whether to detect the second part based on the first reference signal, so that in some cases the second part can be detected based on the first reference signal, which effectively saves terminal power consumption.

[0114] In some embodiments, the first portion is used to indicate at least one of the following information A to E:

[0115] A. Terminal number associated with PDCCH.

[0116] Exemplarily, the terminal number may include a terminal identifier (UE Indentifier, UE ID), such as RNTI (Radio Network Temporary Indentifier). It is understood that the terminal number may also be any information used to identify the terminal device, such as a temporary number of the terminal device.

[0117] In some embodiments, a network device may indicate a terminal number associated with the PDCCH in a first portion of a PDCCH, and the terminal device may determine whether the PDCCH is associated with the terminal device based on the first portion; when the PDCCH is associated with the terminal device, the terminal device detects the second portion. It will be understood that when the detection result of the first portion of the PDCCH includes information indicating the terminal number of the terminal device, the terminal device may determine that the PDCCH is associated with the terminal device, and thus detect the second portion of the PDCCH based on the first reference signal. Therefore, the first information may include information indicating the terminal device number.

[0118] B. Whether the second part includes the first reference signal.

[0119] In some embodiments, the network device may indicate in the first part of the PDCCH whether the second part includes the first reference signal, and the terminal device determines whether the detection of the second part is based on the first reference signal according to the first part.

[0120] C. Whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

[0121] In some embodiments, the network device can indicate in the first part of the PDCCH whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part, and the terminal device determines how to detect the second part based on whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

[0122] D. Information used to detect the function and / or model of the second part.

[0123] Exemplarily, the information used to detect the function and / or model of the second part may include the ID of the function and / or model, or configuration information, feature information, etc. of the function and / or model.

[0124] In some embodiments, the network device may indicate information on a function and / or model for detecting the second part in the first part of the PDCCH, wherein the information on the function and / or model may be related to the signal structure of the second part. For example, if the signal structure of the second part is that the second part includes a first reference signal and a data symbol carrying DCI, the model used to detect the second part is the first model; if the signal structure of the second part is that the second part includes a second reference signal and a data symbol carrying DCI, the model used to detect the second part is the second model. Accordingly, the terminal device may determine the signal structure of the second part based on the information on the function and / or model indicated by the first part, thereby determining whether to detect the second part of the PDCCH based on the first reference signal.

[0125] E. Signal structure of the second part.

[0126] Exemplarily, the signal structure of the second part may include information such as whether the second part includes the first reference signal, whether the reference signal in the second part only includes the first reference signal, whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part, etc.

[0127] In some embodiments, the network device may indicate the signal structure of the second part in the first part of the PDCCH, and the terminal device determines how to detect the second part according to the signal structure of the second part.

[0128] It should be noted that the first part is used to indicate at least one of information A to E, which means that the first part can indicate one or more of the aforementioned information A to E. For example, the first part can be used to indicate the terminal number associated with the PDCCH and whether the second part includes the first reference signal. When the first part indicates the terminal device number and the second part includes the first reference signal, the terminal device detects the second part based on the first reference signal. Alternatively, the first part can be used to indicate the terminal number associated with the PDCCH and information used to detect the function and / or model of the second part. When the first part indicates the terminal device number and the function and / or model of the second part corresponds to the first reference information, the terminal device detects the second part based on the first reference signal. Alternatively, the first part can be used to indicate whether the second part includes the first reference signal and information used to detect the function and / or model of the second part. When the first part indicates that the second part includes the first reference signal, the terminal device detects the second part based on the first reference signal and uses the function and / or model indicated by the first part to detect the second part. In actual applications, the information included or indicated in the first part can be configured based on scenario requirements, system specifications, or protocol specifications, and is not listed here.

[0129] In some embodiments, the terminal device detects the first part of the PDCCH, including: the terminal device detecting a sequence in the first part. In other words, the terminal device performs sequence detection on the first part, that is, the terminal device detects the first part based on the sequence, which can be understood as the terminal device detecting the first part by detecting the sequence.

[0130] According to the above embodiment, the first part of the PDCCH sent by the network device includes a sequence. That is, the first part is a signal that carries the sequence. Accordingly, the detection result of the first part obtained by the terminal device includes a sequence. Optionally, the sequence is a sequence corresponding to specific information, and different sequences correspond to different information, so that specific information can be indicated by the sequence. For example, the sequence corresponds to at least one of the above information A to E, so that at least one of the above information A to E can be indicated by the sequence. Since sequence detection has the characteristics of strong anti-interference ability and can be detected with low power consumption, therefore, based on the first part of the sequence detection, the terminal device can achieve the effect of determining whether to detect the second part only with low power consumption detection, which is beneficial to reducing the power consumption of the terminal device.

[0131] In some embodiments, the first information includes information indicating a terminal number of the terminal device. That is, the terminal device detects the second part based on the first reference signal when the detection result of the first part includes information indicating the terminal number of the terminal device (e.g., UE ID such as RNTI). In this way, the terminal device can find the DCI related to itself through the detection of the first part (e.g., low-power sequence detection), eliminating the need for unnecessary blind detection of the PDCCH, thereby reducing the power consumption of the terminal device.

[0132] In some embodiments, the first information includes a first sequence associated with a terminal number of the terminal device. Specifically, the sequence carried by the first part is associated with the terminal number associated with the PDCCH. When the detection result of the first part includes the first sequence, the terminal device can determine that its terminal number is associated with the PDCCH, and thus detect the second part.

[0133] In some embodiments, the above-mentioned information detection method may further include: if the detection result of the first part includes the second information, the terminal device does not detect the second part of the PDCCH. That is, when the first part includes the second information, it is used to indicate that the terminal device does not detect the second part. Exemplarily, the first part may include the first information and may also include the second information. When the first part includes the second information, the detection result of the terminal device on the first part should include the second information. In this case, the terminal device may not detect the second part. The fact that the terminal device does not detect the second part of the PDCCH can be understood as the terminal device skipping the detection of the second part of the PDCCH.

[0134] Exemplarily, the second information may be a sequence other than the first sequence in the aforementioned embodiment. When the detection result of the first part includes the first sequence, the terminal device detects the second part of the PDCCH; when the detection result of the first part is another sequence, the terminal device does not detect the second part of the PDCCH.

[0135] In some embodiments, the above-mentioned information detection method may further include: if the detection result of the first part includes the third information, the terminal device detects the second part of the PDCCH based on the second reference signal to obtain DCI. The time-frequency resources occupied by the second reference signal are not used to transmit signals other than the first reference signal. That is to say, when the first part includes the third information, it is used to instruct the terminal device to detect the second part based on the second reference signal to obtain DCI. Exemplarily, the first part may include the first information and may also include the third information. When the first part includes the third information, the detection result of the terminal device on the first part should include the third information. In this case, the terminal device can detect the second part based on the second reference signal.

[0136] According to the above embodiment, the second reference signal and other signals (e.g., data signals carrying DCI) occupy different time-frequency resources (i.e., orthogonal transmission). In systems that support the use of the first reference signal to save reference signal overhead, the use of the second reference signal is also supported to avoid the long-term use of high-complexity algorithms for DCI detection, which can effectively save terminal power consumption.

[0137] Exemplarily, the third information includes a second sequence associated with the terminal number of the terminal device. When the detection result of the first part includes the first sequence or the second sequence, the terminal device detects the second part of the PDCCH. Wherein, if the detection result of the first part includes the first sequence, the terminal device detects the second part of the PDCCH based on the first reference signal; if the detection result of the first part includes the second sequence, the terminal device detects the second part of the PDCCH based on the second reference signal. Optionally, it can also be combined with the aforementioned embodiment. When the detection result of the first part includes other sequences (such as a third sequence associated with other terminal numbers), the terminal device does not detect the second part of the PDCCH.

[0138] In some embodiments, the terminal device detects the second part of the PDCCH based on the first reference signal to obtain DCI, including: the terminal device detects the second part including the first reference signal based on the AI ​​function and / or AI model to obtain DCI.

[0139] That is, the terminal device uses an AI function and / or an AI model to detect the second portion including the first reference signal. Because AI-based models can learn the nonlinear relationship between input and output information, they can improve the accuracy of complex calculations. Therefore, detecting the second portion including the first reference signal based on the AI ​​function and / or AI model can improve the accuracy of DCI recovery.

[0140] Optionally, the above-mentioned AI function can be implemented based on ML (machine learning). Therefore, the above-mentioned AI function can also be referred to as AI / ML function. Similarly, the AI ​​model can also be referred to as AI / ML model. In addition, in some descriptions, the above-mentioned AI / ML function can also be referred to as AI / ML feature.

[0141] In some embodiments, for the second part including the second reference signal, the terminal device may perform channel estimation based on the second reference signal in the second part, and demodulate and decode based on the data signal in the second part to recover the DCI. Alternatively, the terminal device may also detect the second part including the second reference signal based on the AI ​​function and / or AI model to obtain the DCI. Specifically, for the second part including the first reference signal, the terminal device performs detection based on the first AI function and / or the first AI model; for the second part including the second reference signal, the terminal device performs detection based on the second AI function and / or the second AI model.

[0142] In some embodiments, the above-mentioned AI function and / or AI model is configured or indicated by the first part in the PDCCH. Optionally, the information D indicated by the first part in the aforementioned embodiment (information for detecting the function and / or model of the second part) may include information for detecting the AI ​​function and / or AI model of the second part based on the first reference signal. For example, the detection result of the first part may be a sequence corresponding to the ID of a specific AI function and / or AI model, thereby realizing the indication of the AI ​​function and / or model.

[0143] In some embodiments, the AI ​​function and / or AI model is configured by sending first configuration information via the network. Specifically, the information detection method further includes: the network device sending the first configuration information to the terminal device; and / or the terminal device receiving the first configuration information. The first configuration information includes information related to the AI ​​function and / or AI model. The AI ​​function and / or AI model is used by the terminal device to detect the second part based on the first reference signal.

[0144] Optionally, the first configuration information is sent before the above-mentioned PDCCH.

[0145] In some embodiments, the first configuration information may be an RRC message or system information.

[0146] In some embodiments, the first configuration information can be used to indicate the ID of the AI ​​function and / or AI model; the terminal device selects the corresponding AI function and / or AI model according to the ID to detect the second part of the PDCCH including the first reference signal.

[0147] In some embodiments, the first configuration information includes a correspondence between the detection result of the first part and the AI ​​function and / or AI model. Optionally, the correspondence may include a correspondence between different detection results of the first part and different AI functions. The terminal device selects the corresponding AI function and / or AI model to detect the second part of the PDCCH including the first reference signal based on the correspondence and the detection result of the first part in the PDCCH.

[0148] For example, a terminal device can be pre-configured to correspond to three sequences, including sequence 0, sequence 1, and sequence 2. Sequence 0 and sequence 1 correspond to the first reference signal; sequence 2 corresponds to the second reference signal. In addition, the network device is also configured through the first configuration information: when the detection result of the first part of the PDCCH is sequence 0, the AI ​​model used is the first AI model; when the detection result of the first part of the PDCCH is sequence 1, the AI ​​model used is the second AI model. Based on this, when the terminal device receives the PDCCH, when the detection result of the first part of the PDCCH includes any sequence corresponding to the terminal device, the terminal device can determine that the PDCCH is related to itself. If the detection result of the first part includes sequence 0, the terminal device uses the first AI model to detect the second part of the PDCCH including the first reference signal; if the detection result of the first part includes sequence 1, the terminal device uses the second AI model to detect the second part of the PDCCH including the first reference signal; if the detection result of the first part includes sequence 2, the terminal device detects the second part of the PDCCH including the second reference signal based on the traditional method.

[0149] In some embodiments, the time-frequency resources occupied by the second part of the PDCCH include the time-frequency resources occupied by the first part of the PDCCH.

[0150] Optionally, the time-frequency resources occupied by the first part of the PDCCH can also be used for non-orthogonal transmission of reference signals and data signals, that is, the first part can be regarded as part of the first reference signal. In this way, the time-frequency resources occupied by the first reference signal included in the second part of the PDCCH are extended to cover the time-frequency resources occupied by the first part of the PDCCH. In the case where the first part of the PDCCH adopts sequence transmission, since the sequence detection has a strong anti-interference capability, even if it receives interference from the second part of the PDCCH, the terminal can complete the detection of the first part of the PDCCH. Therefore, the second part of the PDCCH occupying the resources of the first part of the PDCCH can achieve a larger PDCCH capacity and higher PDCCH transmission efficiency.

[0151] In some embodiments, the above-mentioned information detection method also includes: AI function and / or AI model is used by the terminal device to detect the second part based on the first reference signal; and / or, the terminal device receives second configuration information; wherein the second configuration information is used to indicate the correspondence between the detection result of the first part and the signal structure of the second part.

[0152] In some embodiments, the second configuration information may be an RRC message or system information.

[0153] Optionally, the terminal device determines the signal structure of the second part based on the detection result of the first part and the corresponding relationship, and then selects a corresponding detection method to detect the second part based on the signal structure of the second part.

[0154] In some embodiments, the signal structure of the second portion includes at least one of the following:

[0155] whether the reference signals in the second part include only the first reference signal;

[0156] Whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

[0157] Exemplarily, whether the reference signal in the second part includes only the first reference signal may include two cases:

[0158] Case 1: The reference signal in the second part includes only the first reference signal, that is, the structure of the second part is a structure that uses all non-orthogonal reference signals.

[0159] Case 2: The reference signals in the second part include the first reference signal and the second reference signal. This structure uses a mixture of orthogonal and non-orthogonal reference signals. This hybrid structure can effectively improve the reliability of PDCCH channel estimation in complex channel scenarios. Even if the AI / ML-based non-orthogonal reference signal detection algorithm is not well-suited to the current channel scenario, it can still ensure the quality of channel estimation, thereby maximizing the efficiency and reliability of PDCCH detection.

[0160] Accordingly, the terminal device determines whether the reference signal in the second part includes only the first reference signal based on the detection result of the first part, and then adaptively selects the corresponding detection method or algorithm / function / model to detect the second part.

[0161] Similarly, the terminal device can determine whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part based on the detection results of the first part, and then adaptively select the corresponding detection method or algorithm / function / model to detect the second part.

[0162] It can be understood that in actual applications, the network can flexibly configure signal structures corresponding to different sequences for terminal devices as needed. The terminal device can then determine the structure of the second part of the PDCCH among multiple structures through the detection results of the first part of the PDCCH, thereby dynamically switching the detection method or algorithm / function / model.

[0163] It can be seen that the embodiment of the present application proposes an information detection method based on non-orthogonal reference signals, which divides the PDCCH into two parts. The first part can be detected quickly and with low power consumption, and the second part can include DCI detected based on non-orthogonal reference signals, which requires a high-complexity algorithm for channel estimation and detection. Through the indication information of the first part, the terminal device can determine whether to detect the DCI of the second part based on the non-orthogonal reference signal in the second part. In this way, the terminal device can skip the DCI detection of the second part when the second part of the PDCCH does not include the DCI of the terminal device; or use a low-complexity algorithm for PDCCH detection when the second part uses an orthogonal reference signal, thereby avoiding unnecessary non-orthogonal reference signal-based algorithms that cause excessive power consumption of the terminal, thereby achieving the effect of saving terminal power consumption.

[0164] To facilitate understanding of the above technical solution, several specific application examples are provided below.

[0165] Application Example 1

[0166] In this application example, the reference signal type of the second part of the PDCCH is indicated by the detection result of the first part of the PDCCH.

[0167] Figure 16 is a schematic diagram of an implementation of Application Example 1. As shown in Figure 16, the PDCCH is divided into two parts. The terminal first detects the first part (for example, using sequence detection). If the detection result for a terminal indicates that the terminal should detect the second part of the PDCCH based on a non-orthogonal reference signal (for example, a sequence associated with the terminal is detected), the terminal then detects the second part of the PDCCH based on the non-orthogonal RS.

[0168] If the detection result indicates that the terminal does not detect the second part of the PDCCH (for example, the sequence associated with itself is not detected), the terminal may skip detecting the second part of the PDCCH and thus enter a sleep state.

[0169] The second part of the PDCCH based on non-orthogonal reference signal detection can save a lot of PDCCH reference signal overhead, achieve greater PDCCH channel capacity and higher PDCCH transmission efficiency. However, the detection based on non-orthogonal reference signals based on AI / ML algorithms is highly complex and consumes high power on the terminal. Through low-complexity detection of the first part of the PDCCH (for example, sequence-based detection), the terminal can determine whether the second part includes its own control information (DCI) in a very short time (such as one OFDM symbol period). If it is known that the second part does not contain its own DCI, it can skip the detection of the second part of the PDCCH, so that it can enter the sleep state as soon as possible, effectively saving terminal power consumption.

[0170] Figure 17 is a schematic diagram of another implementation of Application Example 1. As shown in Figure 17, a terminal has two sequences associated with it. The terminal first detects the first part. If the terminal detects the first sequence associated with itself, it should detect the second part of the PDCCH based on the non-orthogonal RS. If the terminal detects the second sequence associated with itself, it should detect the second part of the PDCCH based on the orthogonal RS.

[0171] Figure 18 is a schematic diagram of another implementation of Application Example 1. As shown in Figure 18, a terminal has two sequences associated with it. The terminal first detects the first part. If the terminal detects the first sequence associated with it, it should detect the second part of the PDCCH based on a non-orthogonal RS. If the terminal detects the second sequence associated with it, it should detect the second part of the PDCCH based on an orthogonal RS. If the terminal does not detect the sequence associated with it, it can skip detecting the second part of the PDCCH and enter a sleep state.

[0172] Based on the detection results of the first part of the PDCCH, the terminal can quickly determine whether the second part includes its own DCI and whether to use a non-orthogonal RS or an orthogonal RS to detect the second part of the PDCCH. This can avoid using an orthogonal RS when it is not necessary to detect the PDCCH, thus avoiding the high complexity of using AI algorithms for non-orthogonal RS detection for a long time and effectively saving terminal power consumption.

[0173] Application Example 2

[0174] In this application example, the first part of the PDCCH and the second part of the PDCCH are transmitted non-orthogonally.

[0175] Using a non-orthogonal reference signal detection method based on an AI / ML algorithm, the sequence-based PDCCH part 1 can also be treated as a non-orthogonal reference signal. This allows the time-frequency resources occupied by the PDCCH part 2 to be extended to cover the time-frequency resources occupied by the PDCCH part 1. Because the PDCCH part 1 is transmitted using a sequence, and sequence detection has strong interference immunity, the terminal can complete detection of the PDCCH part 1 even when it encounters interference from the PDCCH part 2. This PDCCH part 2 configuration, which includes PDCCH part 1 resources, can achieve greater PDCCH capacity and higher PDCCH transmission efficiency. However, the AI / ML algorithm is more complex. Based on the PDCCH part 1 detection results, the terminal can dynamically switch between the "PDCCH part 2 configuration including PDCCH part 1 resources" and "PDCCH part 2 configuration excluding PDCCH part 1 resources." This configuration, which includes PDCCH part 1 resources, is only used when greater PDCCH capacity is required, thereby minimizing terminal power consumption.

[0176] Figure 19 is a schematic diagram of Application Example 2. A terminal has two sequences associated with it. When the terminal detects sequence 1 for the first part of the PDCCH, it can determine that the time-frequency resources of the second part of the PDCCH do not include those of the first part of the PDCCH and only needs to perform non-orthogonal RS detection on the second part of the PDCCH. When the terminal detects sequence 2 for the first part of the PDCCH, it can determine that the time-frequency resources of the second part of the PDCCH do include those of the first part of the PDCCH. In this case, within the overlapping time-frequency resources of the first and second parts, the first and second parts of the PDCCH are transmitted non-orthogonally. The sequence in the first part can be regarded as a non-orthogonal reference signal for the second part, and AI / ML detection based on the non-orthogonal reference signal is required for the first and second parts of the PDCCH. If the terminal does not detect the sequence associated with it, it can skip detecting the second part of the PDCCH.

[0177] Considering the first part of the sequence-based PDCCH as a non-orthogonal reference signal and extending the time-frequency resources occupied by the second part of the PDCCH to the time-frequency resources occupied by the first part of the PDCCH can achieve greater PDCCH capacity and higher PDCCH transmission efficiency. At the same time, based on the detection results of the first part of the PDCCH, the two configurations of "the second part of the PDCCH including the resources of the first part of the PDCCH" and "the second part of the PDCCH excluding the resources of the first part of the PDCCH" can be dynamically switched. This allows the use of a more complex AI / ML algorithm to perform joint detection on the first and second parts of the non-orthogonal transmission of the PDCCH only when greater PDCCH capacity is required, thereby minimizing terminal power consumption.

[0178] Application Example 3

[0179] In this application example, the network configures the correspondence between the signal structure of the second part of the PDCCH and the sequence of the first part.

[0180] Through RRC or system information configuration, the network device can flexibly configure reference signal structures corresponding to multiple sequences related to the terminal, and can select the most suitable structure of the second part of the PDCCH.

[0181] Figure 20 is a schematic diagram of an implementation of Application Example 3. The network device first configures, through RRC or system information, the structure of the second part of the PDCCH corresponding to sequence A associated with the terminal to use all non-orthogonal reference signals; and the structure of the second part of the PDCCH corresponding to sequence B to use a mixture of orthogonal and non-orthogonal reference signals (the example in the figure retains the orthogonal reference signal on the first symbol, and places non-orthogonal reference signals on all other REs).

[0182] In this way, the terminal can switch between the two structures according to the sequence detection results of the first part of the PDCCH. When sequence A is detected, the terminal detects the second part of the PDCCH that uses all non-orthogonal reference signals; when sequence B is detected, the terminal detects the second part of the PDCCH in which "an orthogonal reference signal exists on the first symbol and non-orthogonal reference signals are placed on other REs."

[0183] A PDCCH that primarily uses non-orthogonal reference signals while retaining a small amount of orthogonal reference signals can effectively improve the reliability of PDCCH channel estimation in complex channel scenarios. This ensures the quality of channel estimation even if the AI / ML-based non-orthogonal reference signal detection algorithm is not well-suited to the current channel scenario. By switching between "pure non-orthogonal" and "orthogonal / non-orthogonal" based on the sequence detection results of the first part of the PDCCH, reference signal overhead can be flexibly minimized in scenarios most suitable for non-orthogonal reference signal detection, while ensuring channel estimation reliability in scenarios where the AI / ML-based non-orthogonal reference signal detection algorithm is less well-suited to the current channel scenario, thereby maximizing the efficiency and reliability of PDCCH detection.

[0184] Another implementation method is that the network device first configures through RRC or system information that the time-frequency resources of the second part of the PDCCH corresponding to the first sequence related to the terminal do not cover the first part of the PDCCH; the time-frequency resources of the second part of the PDCCH corresponding to the second sequence do not cover the first part of the PDCCH.

[0185] In this way, the terminal can switch between the two structures according to the sequence detection results of the first part of the PDCCH. When the first sequence is detected, the terminal only performs non-orthogonal RS detection on the second part of the PDCCH; when the terminal detects the second sequence, the terminal also performs AI / ML detection based on non-orthogonal reference signals on the first part and the second part of the PDCCH within the overlapping time-frequency resources of the first part and the second part.

[0186] The above are just two examples. The network device can flexibly configure the second part reference signal structure corresponding to multiple sequences for the terminal as needed, and then dynamically switch between several structures based on the sequence detection result of the first part of the PDCCH.

[0187] By switching between the two configurations of "PDCCH part 2 including PDCCH part 1 resources" and "PDCCH part 2 excluding PDCCH part 1 resources" based on the sequence detection results of the PDCCH part 1, it is possible to use a higher complexity AI / ML algorithm to perform joint detection on the non-orthogonal transmitted PDCCH part 1 and part 2 only when a larger PDCCH capacity is required, thereby saving terminal power consumption as much as possible.

[0188] FIG21 is a schematic block diagram of a terminal device 2100 according to an embodiment of the present application. The terminal device 2100 may include:

[0189] The first processing unit 2110 is used to detect the first part of the PDCCH to obtain a detection result of the first part. If the detection result of the first part includes the first information, the second part of the PDCCH is detected based on the first reference signal to obtain the DCI; wherein the time-frequency resources occupied by the first reference signal are also used to transmit other signals besides the first reference signal.

[0190] In some embodiments, the first portion is used to indicate at least one of the following:

[0191] Terminal number associated with PDCCH;

[0192] whether the second part includes the first reference signal;

[0193] Whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part;

[0194] information for detecting the function and / or model of the second part;

[0195] The signal structure of the second part.

[0196] In some embodiments, the terminal number includes a terminal identification UE ID.

[0197] In some embodiments, the detection result of the first portion includes a sequence.

[0198] In some embodiments, the first information includes information indicating a terminal number of the terminal device.

[0199] In some embodiments, the first information includes a first sequence associated with a terminal number of the terminal device.

[0200] In some embodiments, the first processing unit 2110 is further configured to:

[0201] If the detection result of the first part includes the second information, the second part of the PDCCH is not detected.

[0202] In some embodiments, the first processing unit 2110 is further configured to:

[0203] If the detection result of the first part includes the third information, the second part of the PDCCH is detected based on the second reference signal to obtain DCI; wherein the time-frequency resources occupied by the second reference signal are not used to transmit other signals except the first reference signal.

[0204] In some embodiments, the third information includes a second sequence associated with a terminal number of the terminal device.

[0205] In some embodiments, the second reference signal is a quadrature reference signal.

[0206] In some embodiments, the first reference signal is a non-orthogonal reference signal.

[0207] In some embodiments, the first processing unit 2110 is configured to:

[0208] The terminal device detects the second part including the first reference signal based on the artificial intelligence AI function and / or AI model to obtain DCI.

[0209] In some embodiments, as shown in FIG22 , the terminal device further includes a first communication unit 2120 ; the first communication unit 2120 is configured to:

[0210] Receive first configuration information; wherein the first configuration information includes relevant information of the AI ​​function and / or AI model.

[0211] In some embodiments, the first configuration information includes a correspondence between the detection results of the first part and the AI ​​function and / or AI model.

[0212] In some embodiments, the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

[0213] In some embodiments, as shown in FIG23 , the terminal device further includes a second communication unit 2130 ; the first communication unit 2130 is configured to:

[0214] Receive second configuration information; wherein the second configuration information is used to indicate the corresponding relationship between the detection result of the first part and the signal structure of the second part.

[0215] In some embodiments, the signal structure of the second portion includes at least one of the following:

[0216] whether the reference signals in the second part include only the first reference signal;

[0217] Whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

[0218] The terminal device 2100 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 2100 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 in the various modules (sub-modules, units or components, etc.) in the terminal device 2100 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.).

[0219] FIG24 is a schematic block diagram of a network device 2400 according to an embodiment of the present application. The network device 2400 may include:

[0220] The third communication unit 2410 is configured to send a PDCCH to a terminal device;

[0221] Among them, PDCCH includes a first part and a second part; the first part is used by the terminal device to determine whether to detect the second part based on the first reference signal to obtain DCI; the time-frequency resources occupied by the first reference signal are also used to transmit other signals besides the first reference signal.

[0222] In some embodiments, the first portion is used to indicate at least one of the following:

[0223] Terminal number associated with PDCCH;

[0224] whether the second part includes the first reference signal;

[0225] Whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part;

[0226] Information used to detect the function and / or model of the second part.

[0227] In some embodiments, the terminal number comprises a UE ID.

[0228] In some embodiments, the detection result of the first portion includes a sequence.

[0229] In some embodiments, the first part, when including first information, is used to instruct the terminal device to detect the second part based on the first reference signal; the first information includes information for indicating a terminal number of the terminal device.

[0230] In some embodiments, the first information includes a first sequence associated with a terminal number of the terminal device.

[0231] In some embodiments, the first part, when including the second information, is used to instruct the terminal device not to detect the second part.

[0232] In some embodiments, the first part, when including the third information, is used to instruct the terminal device to detect the second part based on the second reference signal to obtain DCI; wherein the time-frequency resources occupied by the second reference signal are not used to transmit other signals except the first reference signal.

[0233] In some embodiments, the third information includes a second sequence associated with a terminal number of the terminal device.

[0234] In some embodiments, the second reference signal is a quadrature reference signal.

[0235] In some embodiments, the first reference signal is a non-orthogonal reference signal.

[0236] In some embodiments, the third communication unit 2410 is further configured to:

[0237] Sending first configuration information to the terminal device; wherein the first configuration information includes relevant information of the AI ​​function and / or AI model; the AI ​​function and / or AI model is used by the terminal device to detect the second part based on the first reference signal.

[0238] In some embodiments, the first configuration information includes a correspondence between the detection results of the first part and the AI ​​function and / or AI model.

[0239] In some embodiments, the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

[0240] In some embodiments, the third communication unit 2410 is further configured to:

[0241] Sending second configuration information to the terminal device; wherein the second configuration information is used to indicate the correspondence between the detection result of the first part and the signal structure of the second part.

[0242] In some embodiments, the signal structure of the second portion includes at least one of the following:

[0243] whether the reference signals in the second part include only the first reference signal;

[0244] Whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

[0245] The network device 2400 of the embodiment of the present application can implement the corresponding functions of the network device in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to each module (sub-module, unit or component, etc.) in the network device 2400 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 2400 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.).

[0246] Figure 25 is a schematic structural diagram of a communication device 2500 according to an embodiment of the present application. The communication device 2500 includes a processor 2510, which can call and execute a computer program from a memory to enable the communication device 2500 to implement the method in the embodiment of the present application.

[0247] In one embodiment, the communication device 2500 may further include a memory 2520. The processor 2510 may call and execute a computer program from the memory 2520 to enable the communication device 2500 to implement the method in the embodiment of the present application.

[0248] The memory 2520 may be a separate device independent of the processor 2510 or may be integrated into the processor 2510 .

[0249] In one embodiment, the communication device 2500 may further include a transceiver 2530 , and the processor 2510 may control the transceiver 2530 to communicate with other devices. Specifically, the transceiver 2530 may send information or data to other devices, or receive information or data sent by other devices.

[0250] The transceiver 2530 may include a transmitter and a receiver. The transceiver 2530 may further include an antenna, and the number of antennas may be one or more.

[0251] In one embodiment, the communication device 2500 may be a network device of an embodiment of the present application, and the communication device 2500 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.

[0252] In one embodiment, the communication device 2500 may be a terminal device of an embodiment of the present application, and the communication device 2500 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.

[0253] 26 is a schematic structural diagram of a chip 2600 according to an embodiment of the present application. The chip 2600 includes a processor 2610, which can call and execute a computer program from a memory to implement the method according to the embodiment of the present application.

[0254] In one embodiment, the chip 2600 may further include a memory 2620. The processor 2610 may call and execute a computer program from the memory 2620 to implement the method executed by the terminal device or the network device in the embodiment of the present application.

[0255] The memory 2620 may be a separate device independent of the processor 2610 , or may be integrated into the processor 2610 .

[0256] In one embodiment, the chip 2600 may further include an input interface 2630. The processor 2610 may control the input interface 2630 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0257] In one embodiment, the chip 2600 may further include an output interface 2640. The processor 2610 may control the output interface 2640 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0258] 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.

[0259] 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.

[0260] The chips used in the network device and the terminal device may be the same chip or different chips.

[0261] 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.

[0262] 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.

[0263] 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).

[0264] 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.

[0265] FIG27 is a schematic block diagram of a communication system 2700 according to an embodiment of the present application. The communication system 2700 includes a terminal device 2100 and a network device 2400 .

[0266] The terminal device 2100 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 2400 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be described in detail here.

[0267] 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 integrated with one or more available media. 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)).

[0268] 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.

[0269] 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.

[0270] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An information detection method, comprising: The terminal device detects the first part of the physical downlink control channel PDCCH and obtains a detection result of the first part; If the detection result includes the first information, the terminal device detects the second part of the PDCCH based on the first reference signal to obtain downlink control information DCI; The time-frequency resources occupied by the first reference signal are also used to transmit other signals except the first reference signal.

2. The method according to claim 1, wherein The first part is used to indicate at least one of the following: The terminal number associated with the PDCCH; whether the second part includes the first reference signal; whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part; information for detecting the function and / or model of the second part; The signal structure of the second part.

3. The method according to claim 2, wherein: The terminal number includes a terminal identification UE ID.

4. The method according to any one of claims 1 to 3, wherein The terminal device detects the first part of the PDCCH, including: The terminal device detects a sequence in the first part.

5. The method according to any one of claims 1 to 4, wherein The first information includes information indicating a terminal number of the terminal device.

6. The method according to claim 5, wherein: The first information includes a first sequence associated with a terminal number of the terminal device.

7. The method according to any one of claims 1 to 6, wherein The method further comprises: If the detection result includes the second information, the terminal device does not detect the second part of the PDCCH.

8. The method according to any one of claims 1 to 7, wherein The method further comprises: If the detection result includes the third information, the terminal device detects the second part of the PDCCH based on the second reference signal to obtain the DCI; wherein the time-frequency resources occupied by the second reference signal are not used to transmit other signals except the first reference signal.

9. The method according to claim 8, wherein The third information includes a second sequence associated with the terminal number of the terminal device.

10. The method according to claim 8 or 9, wherein: The second reference signal is an orthogonal reference signal.

11. The method according to any one of claims 1 to 10, wherein The first reference signal is a non-orthogonal reference signal.

12. The method according to any one of claims 1 to 11, wherein The terminal device detects the second part of the PDCCH based on the first reference signal to obtain downlink control information DCI, including: The terminal device detects the second part including the first reference signal based on an artificial intelligence AI function and / or an AI model to obtain the DCI.

13. The method according to claim 12, wherein: The method further comprises: The terminal device receives first configuration information; wherein, the first configuration information includes relevant information of the AI ​​function and / or AI model.

14. The method according to claim 13, wherein: The first configuration information includes a correspondence between the detection result and the AI ​​function and / or AI model.

15. The method according to any one of claims 1 to 14, wherein The time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

16. The method according to any one of claims 1 to 15, wherein The method further comprises: The terminal device receives second configuration information; wherein the second configuration information is used to indicate the correspondence between the detection result and the signal structure of the second part.

17. The method according to claim 16, wherein The signal structure of the second part includes at least one of the following: whether the reference signals in the second part include only the first reference signal; Whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

18. An information detection method, comprising: The network device sends the PDCCH to the terminal device; The PDCCH includes a first part and a second part; the first part is used by the terminal device to determine whether to detect the second part based on the first reference signal to obtain DCI; the time-frequency resources occupied by the first reference signal are also used to transmit Other signals other than the first reference signal.

19. The method according to claim 18, wherein The first part is used to indicate at least one of the following: The terminal number associated with the PDCCH; whether the second part includes the first reference signal; whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part; Information for detecting the function and / or model of the second part.

20. The method according to claim 19, wherein The terminal number includes a terminal identification UE ID.

21. The method according to any one of claims 18 to 20, wherein The first portion comprises a sequence.

22. The method according to any one of claims 18 to 21, wherein: When the first part includes first information, it is used to instruct the terminal device to detect the second part based on the first reference signal; the first information includes information indicating the terminal number of the terminal device.

23. The method according to claim 22, wherein The first information includes a first sequence associated with a terminal number of the terminal device.

24. The method according to any one of claims 18 to 23, wherein: When the first part includes the second information, it is used to instruct the terminal device not to detect the second part.

25. The method according to any one of claims 18 to 24, wherein When the first part includes the third information, it is used to instruct the terminal device to detect the second part based on the second reference signal to obtain the DCI; wherein the time-frequency resources occupied by the second reference signal are not used to transmit other signals except the first reference signal.

26. The method according to claim 25, wherein The third information includes a second sequence associated with the terminal number of the terminal device.

27. The method according to claim 25 or 26, wherein The second reference signal is an orthogonal reference signal.

28. The method according to any one of claims 18 to 27, wherein The first reference signal is a non-orthogonal reference signal.

29. The method according to any one of claims 18 to 28, wherein The method further comprises: The network device sends first configuration information to the terminal device; wherein the first configuration information includes relevant information of the AI ​​function and / or AI model; the AI ​​function and / or AI model is used by the terminal device to detect the second part based on the first reference signal.

30. The method according to claim 29, wherein The first configuration information includes a correspondence between the detection result of the first part and the AI ​​function and / or AI model.

31. The method according to any one of claims 18 to 30, wherein The time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

32. The method according to any one of claims 18 to 31, wherein The method further comprises: The network device sends second configuration information to the terminal device; wherein the second configuration information is used to indicate the correspondence between the detection result of the first part and the signal structure of the second part.

33. The method according to claim 32, wherein The signal structure of the second part includes at least one of the following: whether the reference signals in the second part include only the first reference signal; Whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

34. A terminal device comprising: The first processing unit is used to detect the first part of the PDCCH to obtain a detection result of the first part. If the detection result of the first part includes first information, the second part of the PDCCH is detected based on the first reference signal to obtain DCI; wherein the time-frequency resources occupied by the first reference signal are also used to transmit other signals other than the first reference signal.

35. The terminal device according to claim 34, wherein: The first part is used to indicate at least one of the following: The terminal number associated with the PDCCH; whether the second part includes the first reference signal; whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part; information for detecting the function and / or model of the second part; The signal structure of the second part.

36. The terminal device according to claim 35, wherein: The terminal number includes a terminal identification UE ID.

37. The terminal device according to any one of claims 34 to 36, wherein: The first processing unit is configured to detect a sequence in the first portion.

38. The terminal device according to any one of claims 34 to 37, wherein: The first information includes information indicating a terminal number of the terminal device.

39. The terminal device according to claim 38, wherein: The first information includes a first sequence associated with a terminal number of the terminal device.

40. The terminal device according to any one of claims 34 to 39, wherein: The first processing unit is further configured to: If the detection result includes the second information, the second part of the PDCCH is not detected.

41. The terminal device according to any one of claims 34 to 40, wherein: The first processing unit is further configured to: If the detection result includes the third information, the second part of the PDCCH is detected based on a second reference signal to obtain the DCI; wherein the time-frequency resources occupied by the second reference signal are not used to transmit other signals except the first reference signal.

42. The terminal device according to claim 41, wherein: The third information includes a second sequence associated with the terminal number of the terminal device.

43. The terminal device according to claim 41 or 42, wherein: The second reference signal is an orthogonal reference signal.

44. The terminal device according to any one of claims 34 to 43, wherein: The first reference signal is a non-orthogonal reference signal.

45. The terminal device according to any one of claims 34 to 44, wherein: The first processing unit is configured to: The terminal device detects the second part including the first reference signal based on an artificial intelligence AI function and / or an AI model to obtain the DCI.

46. ​​The terminal device according to claim 45, wherein: The terminal device also includes a first communication unit for receiving first configuration information; wherein the first configuration information includes relevant information of the AI ​​function and / or AI model.

47. The terminal device according to claim 46, wherein: The first configuration information includes a correspondence between the detection result and the AI ​​function and / or AI model.

48. The terminal device according to any one of claims 34 to 47, wherein: The time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

49. The terminal device according to any one of claims 34 to 48, wherein: The terminal device also includes a second communication unit for receiving second configuration information; wherein the second configuration information is used to indicate the correspondence between the detection result and the signal structure of the second part.

50. The terminal device according to claim 49, wherein: The signal structure of the second part includes at least one of the following: whether the reference signals in the second part include only the first reference signal; Whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

51. A network device comprising: A third communication unit, configured to send a PDCCH to a terminal device; The PDCCH includes a first part and a second part; the first part is used by the terminal device to determine whether to detect the second part based on the first reference signal to obtain DCI; the time-frequency resources occupied by the first reference signal are also used to transmit other signals other than the first reference signal.

52. The network device according to claim 51, wherein The first part is used to indicate at least one of the following: The terminal number associated with the PDCCH; whether the second part includes the first reference signal; whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part; Information for detecting the function and / or model of the second part.

53. The network device according to claim 52, wherein: The terminal number includes a terminal identification UE ID.

54. The network device according to any one of claims 51 to 53, wherein: The first portion comprises a sequence.

55. The network device according to any one of claims 51 to 54, wherein: When the first part includes first information, it is used to instruct the terminal device to detect the second part based on the first reference signal; the first information includes information indicating the terminal number of the terminal device.

56. The network device according to claim 55, wherein The first information includes a first sequence associated with a terminal number of the terminal device.

57. The network device according to any one of claims 51 to 56, wherein: When the first part includes the second information, it is used to instruct the terminal device not to detect the second part.

58. The network device according to any one of claims 51 to 57, wherein: When the first part includes the third information, it is used to instruct the terminal device to detect the second part based on the second reference signal to obtain the DCI; wherein the time-frequency resources occupied by the second reference signal are not used to transmit other signals except the first reference signal.

59. The network device according to claim 58, wherein The third information includes a second sequence associated with the terminal number of the terminal device.

60. The network device according to claim 58 or 59, wherein: The second reference signal is an orthogonal reference signal.

61. The network device according to any one of claims 51 to 60, wherein: The first reference signal is a non-orthogonal reference signal.

62. The network device according to any one of claims 51 to 61, wherein: The third communication unit is further configured to: Sending first configuration information to the terminal device; wherein the first configuration information includes relevant information of the AI ​​function and / or AI model; the AI ​​function and / or AI model is used by the terminal device to detect the second part based on the first reference signal.

63. The network device according to claim 62, wherein: The first configuration information includes a correspondence between the detection result of the first part and the AI ​​function and / or AI model.

64. The network device according to any one of claims 51 to 63, wherein: The time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

65. The network device according to any one of claims 51 to 64, wherein: The third communication unit is further configured to: Sending second configuration information to the terminal device; wherein the second configuration information is used to indicate the correspondence between the detection result of the first part and the signal structure of the second part.

66. The network device according to claim 65, wherein The signal structure of the second part includes at least one of the following: whether the reference signals in the second part include only the first reference signal; Whether the time-frequency resources occupied by the second part include the time-frequency resources occupied by the first part.

67. A terminal device comprising: A transceiver, a processor and a memory, wherein 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 run the computer program stored in the memory so that the terminal device executes the method according to any one of claims 1 to 17.

68. A network device comprising: A transceiver, a processor and a memory, wherein 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 run the computer program stored in the memory to enable the network device to perform the method as described in any one of claims 18 to 33.

69. A chip comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 17.

70. A chip, comprising: A processor, configured to call and execute a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 18 to 33.

71. A computer-readable storage medium for storing a computer program, which, when executed by a device, causes the device to perform the method according to any one of claims 1 to 17.

72. A computer-readable storage medium for storing a computer program, which, when executed by a device, causes the device to perform the method according to any one of claims 18 to 33.

73. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 17.

74. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 18 to 33.

75. A computer program causing a computer to perform the method of any one of claims 1 to 17.

76. A computer program causing a computer to perform the method of any one of claims 18 to 33.

77. A communication system comprising: A terminal device, configured to execute the method according to any one of claims 1 to 17; A network device, configured to execute the method according to any one of claims 18 to 33.

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