Methods and apparatuses for determining power parameter, and devices, medium and product

Abstract

The present application relates to the field of communications. Disclosed are methods and apparatuses for determining a power parameter, and devices, a medium and a product. A method comprises: determining a power parameter of a pilot signal in a superimposed signal, the superimposed signal being a signal obtained by superimposing the pilot signal and a data signal. The method provided in the present application shows a method for determining a power parameter of a pilot signal, such that a network device or a terminal device can perform correct demodulation on the basis of the power parameter of the pilot signal to obtain data carried in the data signal, thereby improving the data transmission reliability.

Description

Methods, devices, equipment, media, and products for determining power parameters Technical Field

[0001] This application relates to the field of communications, and in particular to a method, apparatus, device, medium, and product for determining power parameters. Background Technology

[0002] Super-Imposed Pilot (SIP) is a communication technique that superimposes pilot signals and data signals for transmission. SIP allows the pilot and data signals to share the same time-frequency resources, avoiding mutual interference between pilot and data symbols as in traditional methods. However, when superimposing pilot signals, it is necessary to consider how to achieve the transmission of the superimposed signal to ensure the accuracy of channel estimation and the reliability of data transmission. Summary of the Invention

[0003] This application provides a method, apparatus, device, medium, and product for determining power parameters. The technical solution is as follows:

[0004] According to one aspect of this application, a method for determining power parameters is provided, the method being performed by a network device, the method comprising:

[0005] Determine the power parameters of the pilot signal in the superimposed signal, wherein the superimposed signal is the signal obtained by superimposing the pilot signal and the data signal.

[0006] According to one aspect of this application, a method for determining power parameters is provided, the method being performed by a terminal device, the method comprising:

[0007] Determine the power parameters of the pilot signal in the superimposed signal, wherein the superimposed signal is the signal obtained by superimposing the pilot signal and the data signal.

[0008] According to one aspect of this application, a network device is provided, the network device comprising:

[0009] The first determining module is used to determine the power parameters of the pilot signal in the superimposed signal, wherein the superimposed signal is the signal obtained by superimposing the pilot signal and the data signal.

[0010] According to one aspect of this application, a terminal device is provided, the terminal device comprising:

[0011] The second determining module is used to determine the power parameters of the pilot signal in the superimposed signal, wherein the superimposed signal is the signal obtained by superimposing the pilot signal and the data signal.

[0012] According to one aspect of this application, a network device is provided, the network device comprising: a processor; a transceiver connected to the processor; wherein the processor and / or the transceiver are configured to load and execute the executable instructions to implement a method for determining power parameters.

[0013] According to one aspect of this application, a terminal device is provided, the terminal device comprising: a processor; a transceiver connected to the processor; wherein the processor and / or the transceiver is configured to load and execute the executable instructions to implement a method for determining power parameters.

[0014] According to one aspect of this application, a computer-readable storage medium is provided, wherein at least one program is stored therein, the at least one program being loaded and executed by a processor and / or a transceiver to implement a method for determining power parameters.

[0015] According to one aspect of this application, a chip is provided, the chip including programmable logic circuitry and / or program instructions, for implementing the above-described method for determining power parameters when the chip is running on a network device.

[0016] According to one aspect of this application, a chip is provided, the chip including programmable logic circuitry and / or program instructions, which, when the chip is running on a terminal device, are used to implement the above-described method for determining power parameters.

[0017] According to one aspect of this application, a computer program product is provided, the computer program product including computer instructions stored in a computer-readable storage medium, a processor retrieving the computer instructions from the computer-readable storage medium, and the processor and / or transceiver executing the computer instructions to implement a method for determining power parameters.

[0018] The technical solutions provided in this application have at least the following beneficial effects:

[0019] On the one hand, it supports the use of superimposed signals for data transmission between network devices and terminal devices. Compared with the traditional orthogonal pilot method, the superimposed pilot method avoids mutual interference between pilot symbols and data symbols. Furthermore, by superimposing pilot and data signals, the pilot signal does not consume additional transmission resources. These saved transmission resources can be used to transmit uplink and downlink data channels, control channels, or other reference signals, improving the throughput of the communication system. In addition, the traditional orthogonal pilot method relies on channel estimation for the reference channel to decode the data channel. In high-speed mobile scenarios or scenarios with severe multipath fading, channel estimation methods based on pilot signal interpolation may lead to performance bottlenecks in block error rate (BLER) and throughput. On the other hand, it demonstrates a method for determining the power parameters of the pilot signal, thereby supporting network devices in allocating power between the pilot and data signals in the superimposed signal. This ensures the transmission of the superimposed signal, enabling network devices or terminal devices to correctly demodulate the data carried by the data signal based on the power parameters of the pilot signal, improving the reliability of data transmission. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 illustrates a schematic diagram of the channel estimation and recovery process in related technologies;

[0022] Figure 2 shows a schematic diagram of the resource allocation of data symbols and pilot symbols in related technologies;

[0023] Figure 3 shows a schematic diagram of superimposed pilot signals provided in an exemplary embodiment of this application;

[0024] Figure 4 shows a schematic diagram of superimposed pilot signals provided in an exemplary embodiment of this application;

[0025] Figure 5 shows a schematic diagram of a mobile communication system provided in an exemplary embodiment of this application;

[0026] Figure 6 shows a flowchart of a method for determining power parameters provided in an exemplary embodiment of this application;

[0027] Figure 7 shows a flowchart of a method for determining power parameters provided in an exemplary embodiment of this application;

[0028] Figure 8 shows a structural block diagram of a network device provided in an exemplary embodiment of this application;

[0029] Figure 9 shows a structural block diagram of a terminal device provided in an exemplary embodiment of this application;

[0030] Figure 10 shows a schematic diagram of the structure of a network device provided in an exemplary embodiment of this application;

[0031] Figure 11 shows a schematic diagram of the structure of a terminal device provided in an exemplary embodiment of this application. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings. Exemplary embodiments will be described in detail here, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0033] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items. It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of this application, and similarly, second information may also be referred to as first information. Depending on the context, the word “if,” as used herein, can be interpreted as “when,” “in response to a determination,” or “when…”.

[0034] The technical solutions described in some embodiments of this application can be applied to various communication systems, such as: Global System for Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolution of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), and Wireless Fidelity (WF). It can be used for Fidelity (WiFi), 5th-Generation (5G) systems, cellular IoT systems, cellular passive IoT systems, and can also be used for subsequent evolution systems of 5G NR systems, as well as 6G and subsequent evolution systems.

[0035] It should be understood that in some embodiments of this application, "5G" may also be referred to as "5G NR" or "NR".

[0036] It should be understood that in the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0037] In this embodiment of the application, "predefined" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0038] In this application embodiment, "protocol" may refer to standard protocols in the field of communication, such as LTE protocol, NR protocol and related protocols applied to future communication systems, and this application does not limit it.

[0039] Next, we will introduce channel estimation and pilot resource allocation:

[0040] Due to the complexity and time-varying nature of wireless channel environments, in cellular network systems, the receiver's estimation and recovery of the wireless channel directly impacts the final data recovery performance. The current channel estimation and recovery process in communication systems is shown in Figure 1. The entire PRB (Physical Resource Block) contains multiple REs (Resource Elements). The transmitter allocates information data symbols and specific reference signals (i.e., pilot symbols) known to the receiver, such as CSI-RS (Channel State Information Reference Signal) and DMRS (Demodulation Reference Signal), to different REs within the PRB. During the channel estimation phase, the receiver can use LS (Least Squares Estimation) to estimate the channel information at the RE location where the pilot symbol is placed, based on the actual pilot and the received pilot. Then, based on the channel information estimated from the REs at the pilot locations, the receiver uses an interpolation algorithm to recover the channel information across the entire PRB, which is used for subsequent channel information feedback or data recovery.

[0041] In a 5G NR system, data symbols and pilot symbols are placed on different REs. Figure 2 shows some diagrams of the resource allocation of data symbols and pilot symbols under different configurations. In Figure 2, part (1) places the pilot symbol on the third symbol and uses a frequency-domain interval distribution on the third symbol, that is, each pilot symbol is separated by one data symbol in the frequency domain. The resource allocation pattern shown in part (1) of Figure 2 is the configuration type 1. Since the pilot symbols are all placed on the same symbol, part (1) of Figure 2 belongs to the single-symbol type resource allocation pattern. In part (2) of Figure 2, the pilot symbols are placed on the third and eleventh symbols. The position of the pilot symbols is similar to that in part (1) of Figure 2, and also uses a frequency-domain interval distribution. Therefore, part (2) of Figure 2 can be called the double-symbol type 1 resource allocation pattern. In part (3) of Figure 2, the pilot symbol is placed on the third symbol, but on the third symbol, every two REs are connected together and separated by 4 REs. This resource allocation pattern can be said to be the single-symbol type 2 configuration type. However, in parts (1), (2), and (3) of Figure 2, pilot symbols and data symbols are not placed on the same RE. This shows that in terms of time and frequency resources, data symbols and pilot symbols are orthogonal to each other, meaning that the same RE can only hold either data symbols or pilot symbols. REs that transmit pilot symbols cannot transmit data, resulting in a waste of system time and frequency resources.

[0042] In addition, different wireless environments require different pilot densities. For example, when the UE (User Equipment) moves at a high speed, the channel characteristics change rapidly in the time domain. Therefore, a denser array of pilot symbols needs to be placed in the time domain to ensure the accuracy of channel estimation, such as the additional DMRS configured in the time domain in NR systems.

[0043] Next, we will introduce the Superimposed Pilot (SIP):

[0044] The following section further introduces non-orthogonal superposition pilots, or SIP. Consider a system allocated transmission resources of N subcarriers × M time-domain OFDM (Orthogonal Frequency Division Multiplexing) symbols. For example, the transmission resources could be one PRB, one subband, multiple consecutive PRBs, or multiple consecutive subbands. The data matrix transmitted on these resources is represented as D∈Q. N×M Where Q represents the set of data symbols; and the pilot matrix is ​​represented as P∈R N×M Where R represents the set of pilot symbols. As shown in Figure 3, the embodiment of this application considers the linear superposition of two matrices, as shown in the following equation: S=V⊙D+X⊙P

[0045] Where S∈C N×M The superposition symbol is used, C represents the set of complex numbers, and the data weight matrix is ​​used. and pilot weight matrix A∈[0,1] N×M , The symbol represents the square root calculation, and ⊙ represents the Hadema product. Note: Here, [0, 1] represents a decimal between 0 and 1, including the boundary values ​​0 and 1.

[0046] Typically, superimposed pilot signals are processed at the receiving end using AI / ML (Artificial Intelligence / Machine Learning). In some embodiments, the receiving end uses an AI / ML receiver to jointly perform channel estimation and symbol detection on the received superimposed signals. In other embodiments, the receiving end uses an AI / ML receiver to perform channel estimation on the received superimposed signals, and then uses a conventional receiver for symbol detection. In still other embodiments, the receiving end uses conventional signal estimation in conjunction with an AI / ML receiver to perform symbol detection on the received superimposed signals. That is, the embodiments of this application do not limit the generation and resolution methods of superimposed symbols. In other words, besides the linear superposition method shown above, other methods can be used to superimpose pilot symbols and data symbols. When separating pilot symbols and data symbols from superimposed symbols, other methods not shown in the embodiments of this application can also be used. However, the method for determining the power parameters of the pilot signals in the embodiments of this application can be applied to the different generation and resolution methods of superimposed symbols mentioned above. That is, the protection scope of the embodiments of this application is not limited to this.

[0047] The pilot weight matrix X, data weight matrix V, and matrix A are in a one-to-one correspondence. Once X is fixed, matrices V and A are also fixed. The patterns in this embodiment refer to the patterns of matrices X, V, or A. It is worth noting that the pattern of X corresponds one-to-one with the patterns of V and A. Here, both the data weight matrix and the pilot weight matrix are influenced by matrix A, thus achieving different power allocations for pilot and data symbols on the same time-frequency resource. When matrix A remains consistent across the entire time-frequency resource, it can be considered that the same pilot and data power ratio is used across all time-frequency resources, i.e., the same power proportion. When matrix A is inconsistent across the entire time-frequency resource, it can be considered that different pilot and data power ratios are used at different time-frequency resource locations, i.e., different power proportions, thus forming different power patterns. It should be further noted that matrix A can be pre-set or obtained through AI / ML model training.

[0048] Next, taking downlink SIP transmission as an example, a DMRS-overlayed PDSCH (Physical Downlink Shared Channel) is used, as shown in Figure 4. The RE carrying the DMRS is aligned with the RE carrying the data in both the time and frequency domains, meaning they use the same time and frequency resources. However, during transmission, the signal transmitted is the superposition of the DMRS-carrying RE and the data-carrying RE. A similar scheme can also be applied to pilot-overlayed DMRS transmission using PDCCH (Physical Downlink Control Channel) / PUCCH (Physical Uplink Control Channel) / PUSCH (Physical Uplink Shared Channel).

[0049] In some embodiments, a receiver based on a CNN (Convolutional Neural Network) model can be employed. This model is characterized by its ability to separate the superimposed reference signal (i.e., the DMRS in this example) and the channel (i.e., the PDSCH in this example). Specifically, the AI / ML receiver can estimate the downlink channel using the separated DMRS, and then demodulate the PDSCH using the estimated channel H. In other embodiments, receivers with other models, such as transformers, can also be used; the invention does not limit the choice of AI / ML receiver model.

[0050] It should be noted that DMRS and PDSCH use the same analog beamforming (if any) and precoding, that is, the pilot signal and data signal use the same beamforming and / or precoding.

[0051] Next, we will introduce the DMRS power allocation in NR:

[0052] In NR systems, the power allocation between the DMRS and PDSCH or PUSCH is fixed based on the DMRS configuration. For example, if the DMRS has only one CDM group, the power ratio β of PDSCH / PUSCH to DMRS is 0dB, i.e., a linearity of 1; if the DMRS has two CDM groups, the power ratio β of PDSCH / PUSCH to DMRS is -3dB, i.e., a linearity of 1 / 2; if the DMRS has three CDM groups, the power ratio β of PDSCH / PUSCH to DMRS is -4.77dB, i.e., a linearity of 1 / 3. The advantage of this allocation is that the DFDM symbol containing the DMRS has the same transmit power as the OFDM symbol of the PDSCH / PUSCH. From the perspective of RF transmission, the transmit power can remain constant within a time slot.

[0053] In the aforementioned NR, the DMRS and PDSCH / PUSCH are orthogonal transmission methods, i.e., non-superimposed transmission. Therefore, the power ratio between the DMRS and the channel is often 1:1. For the superimposed pilot transmission scheme in this application embodiment, the transmission power used by the DMRS is relatively low, generally equivalent to 5%, 10%, 15%, or 20% of the data channel's power, occupying only a small portion of the data channel's power resources.

[0054] Next, we will analyze the disadvantages of orthogonal pilots and the advantages of superimposed pilots:

[0055] (1) Disadvantages of orthogonal pilot transmission.

[0056] Traditional uplink and downlink transmission schemes rely on channel estimation using a reference channel (DMRS) to decode the data channel. In high-speed mobile scenarios or severe multipath fading scenarios, channel estimation based on DMRS interpolation may lead to performance bottlenecks in block error rate (BLER) and throughput.

[0057] Furthermore, the existence of DMRS consumes uplink and downlink transmission resources. For example, out of 14 OFDM symbols, 1, 2, 3, or 4 OFDM symbols are used to transmit DMRS, while the remaining OFDM symbols are used to transmit uplink and downlink channels. Therefore, the system throughput cannot be further improved.

[0058] (2) Advantages of superimposed pilot transmission.

[0059] When the system adopts the superimposed pilot transmission method, there are several advantages from the protocol level: the saved DMRS symbols or REs can be used to transmit uplink and downlink data channels, control channels, or other reference signals; the transmission of data channels, such as PDSCH, does not require rate matching of DMRS; considering that DMRS symbols span the time domain, that is, from the first symbol of the channel to the last symbol, the time domain channel estimation can be performed using the DMRS symbols transmitted by SIP, thus eliminating the need for PT-RS (Phase-Tracking Reference Signal).

[0060] Figure 5 shows a schematic diagram of a mobile communication system provided in an exemplary embodiment of this application. The mobile communication system includes a network device 110 and a terminal device 120, and may or may not include a terminal device 130; this application does not limit this.

[0061] The network device 110 in this application provides wireless communication functionality. This network device 110 includes, but is not limited to: an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a Home Evolved Node B (or Home Node B, HNB), a Base Band Unit (BBU), an Access Point (AP) in a Wireless Fidelity (Wi-Fi) system, a wireless relay node, a wireless backhaul node, a Transmission Point (TP), or a Transmission and Reception Point (TRP), etc. It can also be used for next-generation Node B (Next Generation Node) systems in 5G mobile communication systems. B, gNB) or transmission point (TRP or TP), or, in a 5G system, one or a group of antenna panels (including multiple antenna panels) of a base station, or, network nodes constituting a gNB or transmission point, such as baseband unit (BBU) or distributed unit (DU), or base stations in Beyond Fifth Generation (B5G) or 6th Generation (6G) mobile communication systems, or core network (CN), fronthaul, backhaul, radio access network (RAN), network slicing, etc., or serving cell, primary cell (PCell), primary secondary cell (PSCell), special cell (SpCell), secondary cell (SCell), neighboring cell, etc. of terminal equipment.

[0062] The terminal device 120 in this application is also referred to as UE, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device. This terminal includes, but is not limited to: handheld devices, wearable devices, in-vehicle devices, and IoT devices, such as: mobile phones, tablets, e-readers, laptops, desktop computers, televisions, game consoles, mobile internet devices (MID), augmented reality (AR) terminals, virtual reality (VR) terminals, mixed reality (MR) terminals, extended reality (XR) terminals, baffle reality (BR) terminals, cinematic reality (CR) terminals, deceive reality (DR) terminals, wearable devices, controllers, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and wireless terminals in remote surgery. Wireless terminals, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), Set-Top Boxes (STBs), and Customer Premise Equipment (CPEs) are all examples of devices used in medical surgery.

[0063] In some embodiments, network device 110 and terminal device 120 communicate with each other through some air interface technology, such as the Uu interface.

[0064] For example, there are two communication scenarios between network device 110 and terminal device 120: uplink communication scenario and downlink communication scenario. Uplink communication, or uplink transmission, refers to sending signals or data to network device 110; downlink communication, or downlink transmission, refers to sending signals or data to terminal device 120.

[0065] In some embodiments, terminal device 120 and terminal device 130 communicate with each other through some air interface technology, such as the PC5 interface.

[0066] For example, there are two communication scenarios between terminal device 120 and terminal device 130: a first side-by-side communication scenario and a second side-by-side communication scenario. The first side-by-side communication refers to terminal device 120 sending signals to terminal device 130; the second side-by-side communication refers to terminal device 130 sending signals to terminal device 120.

[0067] In some embodiments, terminal device 120 and terminal device 130 are both within network coverage and located in the same cell, or terminal device 120 and terminal device 130 are both within network coverage but located in different cells, or terminal device 120 is within network coverage but terminal device 130 is outside network coverage.

[0068] In some embodiments of this application, "NR" may also be referred to as a 5G NR system or a 5G system. The 5G mobile communication system may include non-standalone (NSA) and / or standalone (SA) networking.

[0069] The technical solutions provided in the embodiments of this application can also be applied to Machine-Type Communication (MTC), Long Term Evolution-Machine (LTE-M) technology, Device-to-Device (D2D) networks, Machine-to-Machine (M2M) networks, Internet of Things (IoT) networks, or other networks. Among them, IoT networks may include, for example, vehicle-to-everything (V2X) networks. The communication methods in V2X systems are collectively referred to as Vehicle to X (V2X), where X can represent anything. For example, V2X may include: Vehicle to Vehicle (V2V) communication, Vehicle to Infrastructure (V2I) communication, Vehicle to Pedestrian (V2P) communication, or Vehicle to Network (V2N) communication, etc.

[0070] The mobile communication system provided in this application embodiment can be applied to at least one of the following communication scenarios: uplink communication scenario, downlink communication scenario, and sidelink communication scenario.

[0071] First, a brief introduction to the terms used in the embodiments of this application will be given.

[0072] Superimposed signals:

[0073] In some embodiments, the superimposed signal is a signal obtained by superimposing a pilot signal and a data signal; or, the superimposed signal is a signal obtained by superimposing a pilot signal and a data signal; or, the superimposed signal is a signal in which the pilot signal and the data signal share the same time-frequency resource; or, the superimposed signal is a signal transmitted by superimposing a pilot signal and a data signal; or, the superimposed signal is a signal obtained by superimposing pilot technology; or, the superimposed signal is a signal in which the pilot signal and the data signal are superimposed on the same time-frequency resource; or, the superimposed signal is a signal in which the pilot signal and the data signal are superimposed on the same time-frequency resource, etc. Optionally, the data signal may be referred to as a channel signal, an information signal, or other equivalent names. Optionally, the pilot signal may also be referred to as a reference signal or other equivalent names.

[0074] In some embodiments, the superimposed signal may also be referred to as the superimposed pilot signal, the non-orthogonal pilot signal, or other equivalent names, and the embodiments of this application do not limit this.

[0075] In some embodiments, the pilot signal is a DMRS; and / or, the pilot signal is a CSI-RS; and / or, the pilot signal is a PT-RS; and / or, the pilot signal is a Sounding Reference Signal (SRS); and / or, the pilot signal is a Cell Reference Signal (CRS).

[0076] In some embodiments, the data signal is carried on at least one of the following channels: PDSCH; PUSCH; PDCCH; PUCCH.

[0077] Power parameters of the pilot signal:

[0078] In some embodiments, the power parameters of the pilot signal include at least one of the following: transmission power; power ratio, which indicates the ratio of the transmission power of the pilot signal to the transmission power of the data signal.

[0079] In some embodiments, the transmission power is used to indicate the power used when transmitting the pilot signal. The units are typically mW (milliwatts) and dBm.

[0080] In some embodiments, the power ratio is used to indicate the ratio of the transmission power of the pilot signal to the transmission power of the data signal; or, the power ratio is used to indicate the ratio of the transmission power of the pilot signal to the transmission power of the data signal; or, the power ratio is used to indicate the percentage of the transmission power of the pilot signal to the transmission power of the data signal; or, the power ratio is used to indicate the ratio of the transmission power of the pilot signal to the transmission power of the data signal; or, the power ratio is used to indicate the ratio of the transmission power of the pilot signal to the transmission power of the data signal, etc.

[0081] In some embodiments, network devices and / or terminals transmit superimposed signals based on the transmission power of pilot signals and the transmission power of data signals.

[0082] In some embodiments, the network device and / or terminal device determine the transmission power of the pilot signal based on a power ratio and the transmission power of the data signal. For example, the power ratio is 5%, meaning the transmission power of the pilot signal is 5% of the transmission power of the data signal; or, the power ratio is 20%, meaning the transmission power of the pilot signal is 20% of the transmission power of the data signal.

[0083] First parameter:

[0084] In some embodiments, the first parameter includes at least one of the following: MCS (Modulation and Coding Scheme); number of transmission layers; antenna port; CDM (Code Division Multiplexing) group; transmission resources.

[0085] In some embodiments, the MCS is typically indicated using an MCS index. The communication protocol defines the MCS index and its corresponding MCS, that is, it defines the mapping relationship between the MCS index and the MCS, usually represented as an MCS mapping table. In a communication system, the MCS represents the modulation and channel coding transmission scheme. For example, the modulation scheme may be 2nd order QPSK (Quadrature Phase Shift Keying), 4th order 16QAM (Quadrature Amplitude Modulation), or 6th order 64QAM; the channel coding code rate (the number of useful information bits divided by the total number of encoded bits) ranges from 120 to 948 useful information bits (per 1024 total bits). Depending on the modulation scheme and channel coding code rate, in one implementation, the MCS index can range from 0 to 28, a total of 29 values, represented using 5 bits, with the remaining three values ​​reserved. It should be noted that the design of the MCS (i.e., modulation scheme and code rate, etc.) corresponding to the MCS index, that is, the design of the MCS mapping table, is only illustrative in this application embodiment. The MCS mapping table can be adaptively changed according to channel conditions and other transmission parameters. That is, this application embodiment does not limit the mapping relationship between the MCS index and the MCS, and the protection scope of this application embodiment is not limited thereto.

[0086] In some embodiments, the number of transmission layers indicates the number of transmission layers, also known as the transmission order or transmission rank. The number of transmission layers can be understood as the number of data streams transmitted simultaneously, or the number of signal streams transmitted simultaneously. The number of transmission layers is a crucial concept in MIMO (Multiple Input Multiple Output). The goal of MIMO is to multiplex and carry "multiple layers" of data on a single subcarrier, or to "modulate" multiple layers of data on a single subcarrier by amplitude modulation. This achieves the goal of providing multiple different data streams to a single user without increasing the spectral bandwidth, utilizing the lack of correlation between elements or beams of a large-spaced antenna array, thereby improving link capacity and peak data rate per user. In some embodiments, when using superimposed pilot technology, each data stream corresponds to a pilot signal, or each layer of data signals corresponds to a pilot signal. Alternatively, each data layer corresponds to a reference signal layer (i.e., pilot signal), meaning each data layer has a corresponding pilot signal for channel estimation.

[0087] In some embodiments, the antenna port is used to indicate the port number of the antenna port. This antenna port may also be referred to as a reference signal port or a pilot signal port. The name of the antenna port changes depending on the pilot signal; for example, when the pilot signal is DMRS, the antenna port includes the DMRS port; when the pilot signal is CSI-RS, the antenna port includes the CSI-RS port; when the pilot signal is SRS, the antenna port includes the SRS port, and so on.

[0088] In some embodiments, CDM groups are used to group multiple antenna ports, and the antenna ports within each group are orthogonally multiplexed using OCC (Orthogonal Cover Code). That is, antenna ports within a CDM group can use the same transmission resources for transmission because they are orthogonally multiplexed using OCC. However, antenna ports in different CDM groups need to use different transmission resources for transmission, achieving orthogonal multiplexing through TDD or FDD. Code division multiplexing refers to distinguishing different antenna ports (or pilot signals) by using OCC in the time or frequency domain.

[0089] In some embodiments, transmission resources may also be referred to as time-frequency resources, or other equivalent names may be used, and the embodiments themselves do not limit this. Transmission resources are allocated by network devices; or, transmission resources are allocated by protocol agreement. Different transmission resources are allocated to different terminal devices, or, different transmission resources are allocated to different types of channels.

[0090] In some embodiments, the transmission resources include at least one of the following: RE; OFDM symbol; RB (Resource Block); Sub-Band; RBG (RB Group); Wide-Band; Frequency Band.

[0091] Figure 6 illustrates a flowchart of a method for determining power parameters provided in an exemplary embodiment of this application. This method is performed by a network device, which may be the network device shown in Figure 5. The method includes:

[0092] Step 210: Determine the power parameters of the pilot signal in the superimposed signal. The superimposed signal is the signal obtained by superimposing the pilot signal and the data signal.

[0093] Determine the power parameters of the pilot signal in the superimposed signal; or, in other words, determine the power parameters of the pilot signal and the power parameters of the data signal; alternatively, determine the power parameters of the pilot signal and the transmission power of the data signal; furthermore, determine the transmission power of the pilot signal and the transmission power of the data signal; or even, determine the power ratio of the pilot signal and the transmission power of the data signal. It should be noted that the above descriptions are different ways of describing the same thing and can be replaced as needed.

[0094] In some embodiments, the power parameters of the pilot signal are predetermined by the protocol; or, the power parameters of the pilot signal are pre-configured; or, the power parameters of the pilot signal are configured by the network device; or, the power parameters of the pilot signal are negotiated by the network device and the terminal device.

[0095] In some embodiments, the power parameters of the pilot signal are used by the network device to transmit and / or receive superimposed signals. For example, the power parameters of the pilot signal are used by the network device to transmit superimposed signals; that is, the network device determines the power parameters of the pilot signal, superimposes the pilot signal and the data signal based on the power parameters of the pilot signal to obtain a superimposed signal, and then transmits the superimposed signal by the network device. Alternatively, the power parameters of the pilot signal are used by the network device to receive the superimposed signal. That is, the network device receives the superimposed signal, determines the power parameters of the pilot signal, and then performs channel estimation and symbol detection on the superimposed signal based on the power parameters of the pilot signal to obtain the data signal. Specifically, the network device separates the pilot signal and the data signal based on the power parameters of the pilot signal, performs channel estimation based on the separated pilot signal and the power parameters of the pilot signal, and then demodulates the data signal through the estimated channel to obtain the information (or data) carried by the data signal. In the embodiments of this application, the order of determining the power parameters of the pilot signal and receiving the superimposed signal is not limited. That is, the network device can receive the superimposed signal first and then determine the power parameters of the pilot signal; or the network device can determine the power parameters of the pilot signal first and then receive the superimposed signal.

[0096] In summary, the method illustrated in this application supports the use of superimposed signals for data transmission between network devices and terminal devices. Compared to traditional orthogonal pilot methods, the superimposed pilot method avoids mutual interference between pilot symbols and data symbols. Furthermore, by superimposing pilot and data signals, the pilot signal does not consume additional transmission resources. These saved transmission resources can be used to transmit uplink and downlink data channels, control channels, or other reference signals, improving the throughput of the communication system. In addition, traditional orthogonal pilot methods rely on channel estimation for the reference channel to decode the data channel. In high-speed mobile scenarios or severe multipath fading scenarios, channel estimation methods based on pilot signal interpolation may lead to performance bottlenecks in block error rate (BLER) and throughput. On the other hand, a method for determining the power parameters of the pilot signal is illustrated, enabling network devices to allocate power between the pilot and data signals in the superimposed signal. This ensures the transmission of the superimposed signal, allowing network devices or terminal devices to correctly demodulate the data carried by the data signal based on the power parameters of the pilot signal, thus improving the reliability of data transmission.

[0097] Figure 7 illustrates a flowchart of a method for determining power parameters provided in an exemplary embodiment of this application. This method is performed by a terminal device, which may be the terminal device shown in Figure 5. The method includes:

[0098] Step 310: Determine the power parameters of the pilot signal in the superimposed signal. The superimposed signal is the signal obtained by superimposing the pilot signal and the data signal.

[0099] Determine the power parameters of the pilot signal in the superimposed signal; or, in other words, determine the power parameters of the pilot signal and the power parameters of the data signal; alternatively, determine the power parameters of the pilot signal and the transmission power of the data signal; furthermore, determine the transmission power of the pilot signal and the transmission power of the data signal; or even, determine the power ratio of the pilot signal and the transmission power of the data signal. It should be noted that the above descriptions are different ways of describing the same thing and can be replaced as needed.

[0100] In some embodiments, the power parameters of the pilot signal are predetermined by the protocol; or, the power parameters of the pilot signal are pre-configured; or, the power parameters of the pilot signal are configured by the network device; or, the power parameters of the pilot signal are negotiated by the network device and the terminal device.

[0101] In some embodiments, the power parameters of the pilot signal are used by the terminal device to transmit and / or receive superimposed signals. For example, the power parameters of the pilot signal are used by the terminal device to transmit superimposed signals; that is, the terminal device determines the power parameters of the pilot signal, superimposes the pilot signal and the data signal based on the power parameters of the pilot signal to obtain a superimposed signal, and then transmits the superimposed signal. Alternatively, the power parameters of the pilot signal are used by the terminal device to receive the superimposed signal. That is, the terminal device receives the superimposed signal, determines the power parameters of the pilot signal, and then performs channel estimation and symbol detection on the superimposed signal based on the power parameters of the pilot signal to obtain the data signal. Specifically, the terminal device separates the pilot signal and the data signal based on the power parameters of the pilot signal, performs channel estimation based on the separated pilot signal and the power parameters of the pilot signal, and then demodulates the data signal through the estimated channel to obtain the information (or data) carried by the data signal. In the embodiments of this application, the order of determining the power parameters of the pilot signal and receiving the superimposed signal is not limited. That is, the terminal device can receive the superimposed signal first and then determine the power parameters of the pilot signal; or the terminal device can determine the power parameters of the pilot signal first and then receive the superimposed signal.

[0102] In summary, the method illustrated in this application supports the use of superimposed signals for data transmission between network devices and terminal devices. Compared to traditional orthogonal pilot methods, the superimposed pilot method avoids mutual interference between pilot symbols and data symbols. Furthermore, by superimposing pilot and data signals, the pilot signal does not consume additional transmission resources. These saved transmission resources can be used to transmit uplink and downlink data channels, control channels, or other reference signals, improving the throughput of the communication system. In addition, traditional orthogonal pilot methods rely on channel estimation for the reference channel to decode the data channel. In high-speed mobile scenarios or severe multipath fading scenarios, channel estimation methods based on pilot signal interpolation may lead to performance bottlenecks in block error rate (BLER) and throughput. On the other hand, a method for determining the power parameters of the pilot signal is illustrated, enabling network devices to allocate power between the pilot and data signals in the superimposed signal. This ensures the transmission of the superimposed signal, allowing network devices or terminal devices to correctly demodulate the data carried by the data signal based on the power parameters of the pilot signal, thus improving the reliability of data transmission.

[0103] The following examples further illustrate the method for determining the power parameters of the pilot signal.

[0104] In some embodiments, the network device and / or terminal device determine the power parameters of the pilot signal in the superimposed signal, which can be implemented by the network device and / or terminal device determining the power parameters of the pilot signal in the superimposed signal based on a first parameter.

[0105] In some embodiments, the first parameter is a parameter related to the pilot signal; or, the first parameter is a parameter related to the data signal; or, the first parameter is a parameter related to the superimposed signal.

[0106] In some embodiments, the first parameter is determined by the network device and / or terminal device based on channel conditions, UE capabilities, protocol rules, etc. The first parameter can be understood as the transmission parameters of the superimposed signal.

[0107] In some embodiments, the network device and / or terminal device determine the power parameter of the pilot signal in the superimposed signal based on the first parameter, which can be implemented as the network device and / or terminal device determining the power parameter of the pilot signal from at least two candidate power parameters based on the first parameter.

[0108] In some embodiments, at least two candidate power parameters are pre-configured by the network device; or, at least two candidate power parameters are agreed upon by a protocol; or, at least two candidate power parameters are activated by the network device in a candidate power parameter set via a second signaling, and the candidate power parameter set is pre-configured by the network device; or, at least two candidate power parameters are activated by the network device in a candidate power parameter set via a second signaling, and the candidate power parameter set is agreed upon by a protocol; or, at least two candidate power parameters are determined based on a first parameter.

[0109] That is, in some embodiments, the first parameter is used to determine the power parameter of the pilot signal from at least two candidate power parameters; or, the first parameter is used to indicate the power parameter of the pilot signal from at least two candidate power parameters; or, the first parameter is used to indicate at least two candidate power parameters, wherein the power parameter of the pilot signal is determined by the network device and / or the terminal device itself.

[0110] In some embodiments, the method further includes: the network device sending a first signaling message, the first signaling message being used to indicate the power parameters of the pilot signal.

[0111] In some embodiments, the method further includes: the terminal device receiving a first signaling, the first signaling being used to indicate the power parameters of the pilot signal.

[0112] In some embodiments, the first signaling is RRC (Radio Resource Control) signaling; or, the first signaling is MAC (Medium Access Control) CE (Control Element) signaling; or, the first signaling is DCI (Downlink Control Information).

[0113] In some embodiments, the first signaling includes a first parameter. The first parameter is used to indicate the power parameter of the pilot signal; or, the first parameter is used to indicate at least two candidate power parameters; or, the first parameter is used to determine the power parameter of the pilot signal from at least two candidate power parameters; or, the first parameter is used to indicate the power parameter of the pilot signal from at least two candidate power parameters.

[0114] In some embodiments, the first parameter and the power parameter have a one-to-one relationship; or, the first parameter and the power parameter have a one-to-many relationship; or, the first parameter and the power parameter have a many-to-one relationship; or, the first parameter and the power parameter have a many-to-many relationship; or, the first parameter and the power parameter have a corresponding relationship.

[0115] In summary, the method provided in this application establishes a method for determining the power parameters of the pilot signal based on a first parameter, ensuring compatibility between devices from different manufacturers. Furthermore, by introducing a method to determine the pilot signal's power parameters from at least two candidate power parameters, which can be dynamically configured via higher-layer signaling (such as RRC), it adapts to changes in network load or the introduction of new services, facilitating flexible expansion of network services. Moreover, network devices can indicate the pilot signal's power parameters by sending the first signaling, enabling coordination and scheduling based on measured overall channel conditions and specific transmission scenarios, thus facilitating optimized resource scheduling and interference coordination.

[0116] Next, we will further explain the method for determining the power parameter of the pilot signal, taking into account the value type of the first parameter.

[0117] Scenario 1: The first parameter includes first indication information. Scenario 2: The first parameter includes MCS. Scenario 3: The first parameter includes the number of transmission layers. Scenario 4: The first parameter includes the antenna port. Scenario 5: The first parameter includes the CDM group. Scenario 6: The first parameter includes transmission resources.

[0118] It should be noted that the order in which they are presented does not indicate the superiority or inferiority of each method.

[0119] Scenario 1: The first parameter includes the first instruction information.

[0120] In some embodiments, the first signaling includes a first parameter, which includes first indication information. The first indication information is used to indicate the power parameter of the pilot signal; or, the first indication information is used to determine the power parameter of the pilot signal from at least two candidate power parameters; or, the first indication information is used to indicate the power parameter of the pilot signal from at least two candidate power parameters.

[0121] For example, the network device indicates the power parameters of the pilot signal to the terminal device by carrying first indication information in the first signaling. If both the network device and the terminal device store a mapping relationship between the first indication information and the power parameters of the pilot signal as agreed in the protocol, or in other words, store a first mapping table, the first mapping table is used to indicate the mapping relationship between the first indication information and the power parameters of the pilot signal. For example, if the power parameter of the pilot signal is a power ratio, then the first mapping table can be as shown in Table 1.

[0122] In some embodiments, the first indication information may be referred to as the power allocation ratio domain, or the DMRS power allocation ratio domain, or the β domain, and the first indication information may also be referred to by other equivalent names.

[0123] Table 1 First Mapping Table (Mapping Relationship between First Indication Information and Power Ratio)

[0124] It should be noted that the above-mentioned first mapping table is only a simplified illustration. For example, a portion of the rows in Table 1 can be used as a new embodiment, and some values ​​in Table 1 can be modified to obtain the first mapping table as a new embodiment. A portion of the rows in Table 1 and other mapping relationships not shown in the embodiments of this application can also be used as new embodiments. The embodiments of this application do not limit this. The mapping relationship between the first mapping table, or the first indication information, and the power parameters of the pilot signal can be changed according to the actual scenario. For example, the power parameters of the pilot signal can also be the transmission power of the pilot signal, and the value range of the power parameters of the pilot signal can be changed according to the actual scenario (e.g., the power ratio includes 5%, 10%, 15%, 20%). The mapping relationship between the first indication information and the power parameters of the pilot signal can be changed according to the actual scenario (e.g., taking Table 1 as an example, "000" can correspond to 40%, "001" can correspond to 35%, "010" can correspond to 30%, and so on). The number of bits in the first indication information and the number of power parameters of the pilot signal indicated by the first indication information can also be changed according to the actual scenario, and so on. The design methods of the first mapping table in different scenarios will not be listed one by one in the embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto.

[0125] In some embodiments, there is a one-to-one relationship between the first indication information and the power parameter of the pilot signal, that is, one first indication information corresponds to one power parameter of the pilot signal, or the value of one first indication information corresponds to one power parameter of the pilot signal.

[0126] In some embodiments, the network device determines the power parameters of the pilot signal based on a first parameter. For example, the network device can determine the power parameters of the pilot signal corresponding to each channel. When the network device schedules PDSCH or PUSCH through scheduling information (such as first signaling), the scheduling information, in addition to indicating the transmission resources and a series of transmission parameters corresponding to the PDSCH or PUSCH, also indicates the power parameters of the pilot signal corresponding to the PDSCH or PUSCH. Alternatively, the PDSCH or PUSCH is indicated by pre-configuration information, such as SPS (Semi-Persistent Scheduling) PDSCH or CG (Configured Grant) PUSCH. The network device can indicate the power parameters of the pilot signal corresponding to the pre-configured PDSCH or PUSCH by carrying the first indication information in the first signaling. After receiving the first signaling, the terminal device can perform channel estimation and demodulation on the received superimposed signal to obtain the data carried by the superimposed signal for PDSCH; for PUSCH, the terminal device can send the superimposed signal based on the power parameters of the pilot signal indicated by the first signaling, that is, generate the pilot signal according to the power parameters of the pilot signal and superimpose it with the data signal to obtain the superimposed signal.

[0127] In some embodiments, the terminal device receives a first signaling and determines the power parameters of the pilot signal based on the first indication information in the first signaling.

[0128] In summary, the method illustrated in this application demonstrates that the network device directly indicates the power parameters of the pilot signal through first indication information in the first signaling. Although this method increases the signaling overhead of the first signaling to some extent, it is relatively simple and direct in implementation. Furthermore, since it does not reuse the original indication information in the first signaling, it achieves decoupling of different indication information in the first signaling, improving the flexibility of indicating the power parameters of the pilot signal and supporting further expansion. Moreover, reusing the original indication information for multiple indications may make the protocol more complex because multiple pieces of information need to be represented simultaneously in a limited bit field, which may increase the complexity of encoding and decoding. Adding the first indication information directly to the first signaling avoids this complexity, making the protocol simpler, clearer, and easier to implement and maintain.

[0129] Scenario 2: The first parameter includes MCS.

[0130] In some embodiments, the first parameter includes the MCS; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: determining the power parameter of the pilot signal in the superimposed signal based on the MCS.

[0131] In some embodiments, the MCS (Multi-Channel System) usage strategy for data transmission is adapted to the channel environment. Specifically, taking the MCS mapping table agreed upon in related technologies as an example, when channel conditions are poor, such as an SNR (Signal-to-Noise Ratio) of -5dB, a lower MCS level can be used, such as an MCS index of 1, which corresponds to QPSK modulation and 157 useful information bits. Conversely, when channel conditions are good, such as an SNR of 15dB, a higher MCS level can be used, such as an MCS index of 25, which corresponds to 64QAM modulation and 822 useful information bits. For SIP transmission, i.e., transmission of superimposed signals, if the data signal uses a low MCS level, more transmission power needs to be allocated to the pilot signal in order to better separate the pilot signal from the superimposed signal and use it for channel estimation. In this case, the power parameter of the pilot signal, whether it is transmission power or power ratio, is usually set to a higher value. However, if the data signal uses a high MCS level, even if the transmission power of the pilot signal is low, the receiver can still recover the pilot signal from the superimposed signal and perform channel estimation. In this case, the power parameter of the pilot signal can be set to a lower value. That is, the power parameter of the pilot signal satisfies at least one of the following characteristics: the lower the MCS, the higher the power parameter; the lower the MCS level, the higher the power parameter; MCS and power parameter are negatively correlated; MCS level and power parameter are negatively correlated.

[0132] It's important to clarify that MCS and MCS levels refer to different concepts. MCS is a broad concept that defines the number of effective bits each resource unit (RE) can carry. It comprises two parts: modulation scheme and code rate. The modulation scheme determines the number of bits that each RE can transmit. For example, QPSK can transmit 2 bits per RE, 16QAM can transmit 4 bits, 64QAM can transmit 6 bits, and 256QAM can transmit 8 bits. The code rate is the ratio between useful bits and total transmitted bits, used to measure the redundancy added at the physical layer. A lower code rate indicates more redundancy and less effective data, but stronger anti-interference capability. An MCS level, on the other hand, is a specific level of MCS, primarily reflected in the protocol-defined MCS mapping table. It can be understood that each MCS index in the mapping table corresponds to a specific MCS level; that is, the MCS level is determined by the protocol-defined MCS classification method.

[0133] Specifically, taking the data signal carried by PDSCH or PUSCH and the pilot signal by DMRS as an example, the relationship between the power parameter of the pilot signal and MCS is further explained. For example, if the MCS level used by PDSCH / PUSCH is low, in order to better separate the pilot part from the non-orthogonal signal (for channel estimation), more power is often needed for DMRS. In this case, the power ratio of DMRS to PDSCH / PUSCH is also high, such as 30%. If the MCS level used by PDSCH / PUSCH is high, even with a small amount of DMRS power, the receiver can recover the pilot signal and perform channel estimation. In this case, a lower power ratio can be allocated to DMRS, such as 5%. Naturally, this can be extended to a medium MCS level, allocating a medium DMRS power ratio, such as 15%. Therefore, a suitable DMRS power ratio can be determined or matched based on the MCS of the transmitter, that is, the power parameter of the pilot signal is determined or matched based on the MCS.

[0134] In some embodiments, the first signaling includes a first parameter, which includes a first MCS index. The first MCS index indicates the power parameters of the first MCS and the corresponding pilot signal. That is, the MCS index not only includes the modulation scheme and channel coding rate of the PDSCH or PUSCH transmission, but also relates to the power parameters of the pilot signal. For example, the mapping relationship between the MCS index and the power parameters of the pilot signal is updated in the MCS mapping table agreed in the protocol, as shown in Table 2.

[0135] Table 2 Updated MCS Mapping Table

[0136] It should be noted that IMCS in Table 2 above is another way of representing the MCS index, used to explicitly indicate that this is an index value. Similarly, Qm is another way of representing the modulation order. Furthermore, for ease of representation, the code rate is multiplied by 1024 to use an integer representation. For example, if the target code rate is 0.5, it is represented as 512 (0.5 × 1024). Spectral efficiency represents the number of bits that can be transmitted on a unit of spectrum resource (such as each resource element or each subcarrier). It is usually expressed in bits per hertz (bits / Hz). The higher the spectral efficiency, the more data can be transmitted on the same spectrum resource.

[0137] It should be noted that the updated MCS mapping table described above is only a simplified illustration. For example, a portion of the rows in Table 2 can be used as a new embodiment, and modifying some values ​​in Table 2 to obtain the MCS mapping table can be used as a new embodiment. A portion of the rows in Table 2 and other mapping relationships not shown in the embodiments of this application can also be used as new embodiments. This application does not limit the scope of the embodiments in this regard. The power parameters corresponding to different MCS indices can be designed according to the actual scenario. For example, the power parameter of the pilot signal can also be the transmission power of the pilot signal; the range of values ​​for the power parameter of the pilot signal can be changed according to the actual scenario (e.g., power ratios include 5%, 10%, 15%, and 20%); and the number of bits in the MCS index can also be changed according to the actual scenario. The design methods of the MCS mapping table for different scenarios are not listed in detail in the embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto.

[0138] In some embodiments, there is a one-to-one relationship between the power parameters of the MCS and the pilot signal; or, there is a many-to-one relationship between the power parameters of the MCS and the pilot signal; or, there is a one-to-one relationship between the MCS level and the power parameters of the pilot signal; or, there is a many-to-one relationship between the MCS level and the power parameters of the pilot signal; or, there is a one-to-one relationship between the MCS index and the power parameters of the pilot signal; or, there is a many-to-one relationship between the MCS index and the power parameters of the pilot signal. For example, as shown in Table 2, there is a many-to-one relationship between the MCS index and the power ratio, meaning that multiple MCS indices correspond to the same power ratio, such as MCS indices 0 to 3 all corresponding to a power ratio of 5%, MCS indices 4 to 7 all corresponding to a power ratio of 10%, and so on.

[0139] In some embodiments, the aforementioned first signaling may be downlink control information, i.e., DCI, in some dynamically scheduled PDSCH or PUSCH implementations. In some semi-static configuration information, such as for Semi-Persistent Scheduling PDSCH or Configured Grant PUSCH, it may be RRC signaling.

[0140] In summary, the method illustrated in this application allows network devices or terminal devices to determine the power parameters of pilot signals based on the MCS (Multi-Signal Classification). For superimposed signals, different MCSs typically correspond to different channel conditions. When channel conditions are poor, a lower MCS level is used. Due to the poor channel conditions, the superimposed signal experiences more severe interference during transmission, thus requiring a higher power parameter to ensure correct separation of the pilot signal from the superimposed signal. In other words, this application not only illustrates a scheme for determining the power parameters of pilot signals based on MCS but also demonstrates the relationship between the power parameters of the pilot signal and the MCS. This ensures that the power parameters of the pilot signal are suitable for determination by network devices or terminal devices and that the determined power parameters support correct separation of the pilot signal from the superimposed signal. Furthermore, the network device indicates the power parameters of the pilot signal simultaneously with the MCS level, eliminating the need for additional indication information in the first signaling and avoiding additional signaling overhead.

[0141] Scenario 3: The first parameter includes the number of transport layers.

[0142] In some embodiments, the first parameter includes the number of transmission layers; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: determining the power parameter of the pilot signal in the superimposed signal based on the number of transmission layers.

[0143] In some embodiments, for PDSCH or PUSCH transmission, considering the Space Division Multiple Access (SDM) technology in the MIMO transmission scheme, the network device can instruct the downlink PDSCH to use 1 layer or multiple layers (maximum 8 layers for a single user in NR) for transmission, and can also instruct the uplink PUSCH to use 1 layer or multiple layers (maximum 4 layers for a single user in NR) for transmission. It should be noted that in some embodiments, each transport layer corresponds to one DMRS port. In addition to the aforementioned single-user (Single UE, SU) multi-layer data transmission, the NR system also supports multi-user (Multiple UE, MU) multi-layer data transmission. For example, with 8 UEs, each transmitting at 1 layer, the data channel can be considered as 8-layer multi-user transmission. Regardless of whether it's SU or MU transmission, the following objective rules apply to multi-layer transmission: When channel conditions are good, the network device often schedules multi-layer transmission for SU or MU; when channel conditions are poor, the network device often schedules single-layer transmission for SU. For superimposed signals, when SU ​​or MU are transmitted in multiple layers, there are many layers of PDSCH or PUSCH superimposed on the same time-frequency resources, and each layer of data has a matching reference signal (i.e. pilot signal) for channel estimation. This results in mutual interference between different data layers and / or reference signal layers, which either affects the channel estimation based on the pilot signal or affects the demodulation of the data channel.

[0144] In some embodiments, this application designs a power parameter allocation method for pilot signals based on the number of transmission layers (i.e., the number of layers). The general principle is that when the number of superimposed data signal layers (or data streams, data layers, PDSCH, or PUSCH) is large, the power parameter of the pilot signal can take a larger value; when the number of superimposed data signal layers is small, the power parameter of the pilot signal can take a smaller value. For example, taking the data signal as a signal carried by PDSCH or PSUCH, the pilot signal as a DMRS signal, and the power parameter of the pilot signal as a power ratio, when there is multi-layer transmission of SU or MU, the number of PDSCH or PUSCH layers superimposed on the same time-frequency resources is large, and each layer of data has a matched DMRS layer for channel estimation. When the number of superimposed PDSCH or PUSCH and DMRS layers is large, a larger power ratio can be allocated to the DMRS; when the number of superimposed PDSCH / PUSCH and DMRS layers is small, a smaller power ratio can be allocated to the DMRS. That is, the power parameter of the pilot signal satisfies at least one of the following characteristics: the higher the number of transmission layers, the higher the power parameter; the number of transmission layers is positively correlated with the power parameter.

[0145] In some embodiments, the protocol pre-defines the mapping relationship between the number of transmission layers and the power parameters of the pilot signal; or, the network device pre-configures the mapping relationship between the number of transmission layers and the power parameters of the pilot signal; or, the protocol pre-defines a set of mapping relationships, and the network device pre-configures at least two mapping relationships in the set; or, the network device pre-configures a set of mapping relationships, and the network device activates at least two mapping relationships in the set, and so on. For example, taking the power parameters of the pilot signal as a power ratio, the mapping relationship between the number of transmission layers and the power parameters of the pilot signal is shown in Table 3.

[0146] Table 3. Mapping relationship between transmission layer number and power ratio

[0147] It should be noted that Table 3 above is only a simplified illustration of the mapping relationship between the number of transmission layers and the power parameters of the pilot signal. For example, a portion of the rows in Table 3 can be used as a new embodiment, and a new mapping relationship can be obtained by modifying some values ​​in Table 3 as a new embodiment. A portion of the rows in Table 3 and other mapping relationships not shown in the embodiments of this application can also be used as new embodiments. This application does not limit the scope of this implementation. The power parameters corresponding to different transmission layers can be designed according to the actual scenario. For example, the power parameter of the pilot signal can also be the transmission power of the pilot signal, and the range of values ​​for the power parameter of the pilot signal can be changed according to the actual scenario (e.g., power ratios include 5%, 10%, 15%, and 20%). The range of values ​​for the number of transmission layers can also be changed according to the actual scenario. The design methods for the mapping relationship between the number of transmission layers and the power parameters of the pilot signal under different scenarios are not listed in the embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto.

[0148] In some embodiments, the first signaling includes a first parameter, which includes a first transmission layer number; the first transmission layer number is used to indicate the power parameter of the pilot signal corresponding to the first transmission layer number. Optionally, the first transmission layer number is used to indicate the transmission layer number currently scheduled by the network device. The network device or terminal device determines the power parameter of the pilot signal corresponding to the first transmission layer number based on the first transmission layer number and the mapping relationship between the transmission layer number and the power parameter of the pilot signal. It can be understood that the first transmission layer number is used to indicate the transmission layer number currently scheduled by the network device and the power parameter of the pilot signal corresponding to the first transmission layer number.

[0149] In some embodiments, the network device does not directly indicate the scheduled transmission layer number, but indirectly indicates it through other transmission parameters. For example, the first signaling includes a first parameter, which includes at least one antenna port. The at least one antenna port is used to indicate the currently scheduled antenna port, and it is also used to determine the first transmission layer number and the power parameter of the pilot signal corresponding to the first transmission layer number; or, the first signaling includes antenna port information, the first parameter includes the first transmission layer number, and the antenna port information is used to determine the first transmission layer number; the first transmission layer number is used to indicate the power parameter of the pilot signal corresponding to the first transmission layer number. In some embodiments, each transmission layer corresponds to one antenna port. The network device or terminal device can determine the transmission layer number based on the number of antenna ports included in the at least one antenna port, such as determining that the at least one antenna port corresponds to the first transmission layer number, and then determining the power parameter of the pilot signal based on the first transmission layer number and the mapping relationship between the transmission layer number and the power parameter of the pilot signal (as shown in Table 3 above). For example, taking the pilot signal as a DMRS signal, the antenna port as a DMRS port, and the data signal as a signal carried by PDSCH or PUSCH, before the network device transmits PDSCH or the terminal device transmits PUSCH, the network device indicates at least one DMRS port (also referred to as DMRS port number information) to the terminal device through a first signaling. For instance, if the network device indicates DMRS ports 0, 2, and 3, then when the network device transmits PDSCH or the terminal device transmits PUSCH, it can determine that it is a Layer 3 data stream transmission based on DMRS ports 0, 2, and 3, i.e., the number of transmission layers is 3.

[0150] In summary, the method illustrated in this application demonstrates a method for determining the power parameters of pilot signals based on the number of transmission layers. For superimposed signals, on the one hand, different numbers of transmission layers represent different channel conditions. When channel conditions are poor, fewer transmission layers are used; when channel conditions are good, network devices tend to schedule more transmission layers. On the other hand, as the number of transmission layers increases, since each data layer has its corresponding reference signal layer, the number of pilot signals also increases accordingly. This leads to increased interference between pilot signals and data signals on the same time-frequency resources. Therefore, when the number of transmission layers increases, the power parameters allocated to the pilot signals should also increase accordingly to ensure that the pilot signals can be correctly separated from the superimposed signals. Furthermore, two methods for indicating the number of transmission layers in the first signaling are also shown: one is to directly indicate the number of transmission layers, and the other is to indicate it based on other transmission parameters (such as antenna ports). The two methods for indicating the number of transmission layers shown above increase the flexibility of the first signaling in indicating the power parameters of pilot signals, supporting the use of different formats of first signaling to indicate the power parameters of pilot signals.

[0151] Scenario 4: The first parameter includes the antenna port.

[0152] In some embodiments, the first parameter includes an antenna port; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: determining the power parameter of the pilot signal in the superimposed signal based on the antenna port.

[0153] In some embodiments, network devices and / or terminal devices store a mapping relationship between the power parameters of antenna ports and pilot signals. This mapping relationship is pre-defined by a protocol; or, pre-configured by the network device; or, a set of mapping relationships is pre-defined by the protocol, and the network device pre-configures at least two mapping relationships in the set; or, the network device pre-configures the set of mapping relationships, and the network device activates at least two mapping relationships in the set, etc.

[0154] In some embodiments, the relationship between the antenna port and the power parameter is one-to-one; or, the relationship between the antenna port and the power parameter is many-to-one.

[0155] In some embodiments, the first signaling includes a first parameter, the first parameter including a first antenna port; the first antenna port is used to indicate the power parameter of the pilot signal corresponding to the first antenna port. In some embodiments, the first signaling includes a first parameter, the first parameter including at least one antenna port; each of the at least one antenna port is used to indicate the power parameter of the pilot signal corresponding to that antenna port.

[0156] For example, taking the power parameters of the pilot signal as the power ratio, and the relationship between antenna ports and power parameters as many-to-one, with the antenna port being a DMRS port as an example, the mapping relationship between the antenna port and the power parameters of the pilot signal is shown in Table 4. For example, each pair of ports corresponds to a different DMRS power allocation ratio. It should be noted that the reason why two DMRS ports share a power ratio in this table is that these two DMRS ports are often implemented in a cross-polarization manner, and can use the same DMRS and PDSCH / PUSCH power ratio. That is, multiple antenna ports sharing a power ratio use cross-polarization to achieve orthogonality. Or, in other words, when the first antenna port and the second antenna port correspond to the same power parameter, the polarization directions of the first antenna port and the second antenna port satisfy cross-polarization.

[0157] Table 4 shows the mapping relationship between the power parameters of the antenna ports and the pilot signals for setting multiple antenna ports.

[0158] For example, taking the power parameter of the pilot signal as the power ratio and the antenna port as the DMRS port, different antenna ports can correspond to different power parameters. That is, for different antenna ports, the mapping relationship between the power parameter of the antenna port and the pilot signal is set separately. The mapping relationship between the power parameter of the antenna port and the pilot signal is shown in Table 5.

[0159] Table 5 sets the mapping relationship between the power parameters of the antenna port and the pilot signal for each antenna port.

[0160] It should be noted that when the mapping relationship between the power parameters of the antenna port and the pilot signal is set separately for different antenna ports as shown in Table 5, the power parameters of the pilot signals corresponding to different antenna ports can be the same or different. Compared with the setting method shown in Table 4, the setting method shown in Table 5 adopts a more granular mapping relationship division method, which can cope with more types of transmission scenarios. When using the setting method shown in Table 5, if the power parameters of the pilot signals corresponding to different antenna ports are the same, the separation of different pilot signals can be achieved in a way similar to Table 4, that is, by agreeing or configuring different antenna ports using the same power parameters to use different polarization directions. Of course, other methods can also be used to achieve orthogonality, such as the code division multiplexing method described below, thereby ensuring the separation of different pilot signals. This application embodiment does not limit the orthogonality of different pilot signals between different antenna ports.

[0161] It should be noted that Tables 4 and 5 above are merely simplified illustrations of the mapping relationship between the power parameters of the antenna ports and the pilot signals. For example, a portion of the rows in Tables 4 or 5 can be used as a new embodiment, and a new mapping relationship can be obtained by modifying some values ​​in Tables 4 or 5 as a new embodiment. A portion of the rows in Tables 4 or 5 and other mapping relationships not shown in the embodiments of this application can also be used as new embodiments. This application does not limit the scope of this implementation. The power parameters corresponding to different antenna ports can be designed according to the actual scenario. For example, the power parameter of the pilot signal can also be the transmission power of the pilot signal; the range of values ​​for the power parameter of the pilot signal can be changed according to the actual scenario (e.g., power ratios include 5%, 10%, 15%, and 20%); the number of antenna ports can be changed according to the actual scenario; and the type of antenna port can be changed according to the actual scenario (e.g., including at least one of DMRS ports, SRS ports, and CRS ports). The design methods for the mapping relationship between the power parameters of the antenna ports and the pilot signals under different scenarios are not listed in detail in this application, but the scope of protection of this application is not limited thereto.

[0162] In summary, the method provided in this application illustrates a method for determining the power parameters of pilot signals based on antenna ports. For superimposed signals, in order to correctly distinguish the pilot signals corresponding to different data streams during multi-layer data stream transmission, different power parameters need to be set for different pilot signals overlapping in time-frequency resources. This allows network devices and / or terminal devices to distinguish the pilot signals transmitted by each antenna port based on the power parameters, thereby achieving multiplexing of transmission resources and improving resource utilization. Simultaneously, network devices can dynamically adjust power allocation and signal processing strategies according to user channel conditions and service requirements, i.e., adjusting the antenna ports corresponding to different users or different channels, thereby achieving higher spectral efficiency. In some scenarios, the relationship between antenna ports and power parameters can be many-to-one. This is because antenna ports can achieve orthogonality by changing their polarization direction, allowing terminal devices to directly distinguish pilot signals corresponding to the same power parameter based on the polarization direction, improving the reliability of pilot signal transmission. Furthermore, an antenna port indication method is also shown, directly indicating the antenna port through a first signaling, which is beneficial for matching with the first signaling format in related technologies.

[0163] Scenario 5: The first parameter includes the CDM group.

[0164] In some embodiments, the first parameter includes a CDM group; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: determining the power parameter of the pilot signal in the superimposed signal based on the CDM group.

[0165] In some embodiments, CDM groups are used to achieve orthogonality of antenna ports through code division multiplexing. For example, different antenna ports assigned to the same CDM group are orthogonalized using code division multiplexing; different antenna ports correspond to different pilot signals, which can be understood as different pilot signals assigned to the same CDM group being orthogonalized using code division multiplexing. For example, within a CDM group, one antenna port uses orthogonal code 1, and another antenna port uses orthogonal code 2. However, between different CDM groups, orthogonality is not achieved through code division multiplexing, but rather through time division multiplexing or frequency division multiplexing to maintain orthogonality. That is, at least two pilot signals corresponding to different CDM groups have different power parameters; and / or, at least two pilot signals corresponding to the same CDM group have the same power parameters.

[0166] For example, some DMRS ports are assigned to one CDM group, such as CDM group 0, and are orthogonal to each other using CDM. Other DMRS ports are assigned to another CDM group, such as CDM group 1, and are also orthogonal to each other using CDM. Within a CDM group, for example, one DMRS port occupies 4 REs using the orthogonal code {+1, +1, +1, +1}, and another DMRS port also occupies the same 4 REs using the orthogonal code {+1, +1, -1, -1}. In this case, the DMRS ports within the same CDM group are orthogonal to each other using code division. However, the DMRS ports in CDM group 0 and CDM group 1 are not orthogonalized using code division, but rather maintained orthogonally using TDM (Time Division Multiplexing) or FDM (Frequency Division Multiplexing). It should be noted that the orthogonalization mentioned above refers only to the orthogonalization between DMRS ports or CDM groups, and does not refer to the orthogonality between DMRS and PDSCH or PUSCH. The orthogonality between them (as shown in the SIP scheme) is a superposition method.

[0167] In some embodiments, the first signaling includes a first parameter, which includes a first CDM group; the first CDM group is used to indicate the power parameters of the pilot signal corresponding to the first CDM group.

[0168] In some embodiments, network devices and / or terminal devices store the mapping relationship between the power parameters of CDM groups and pilot signals. This mapping relationship is pre-defined by a protocol; or, pre-configured by the network device; or, a set of mapping relationships is pre-defined by the protocol, and the network device pre-configures at least two mapping relationships in the set; or, the network device pre-configures the set of mapping relationships, and the network device activates at least two mapping relationships in the set, etc.

[0169] For example, using the power parameters of the pilot signal as the power ratio, the mapping relationship between the CDM group and the power parameters of the pilot signal is shown in Table 6. Specifically, the DMRS port within each CDM group uses the power parameters corresponding to or configured for that CDM group.

[0170] Table 6. Mapping relationship between CDM group and pilot signal power parameters

[0171] It should be noted that Table 6 above is only a simplified illustration of the mapping relationship between the CDM group and the power parameters of the pilot signal. For example, a portion of the rows in Table 6 can be used as a new embodiment, and a new mapping relationship can be obtained by modifying some values ​​in Table 6 as a new embodiment. A portion of the rows in Table 6 and other mapping relationships not shown in the embodiments of this application can also be used as new embodiments. This application does not limit the scope of this implementation. The power parameters corresponding to different CDM groups can be designed according to the actual scenario. For example, the power parameter of the pilot signal can also be the transmission power of the pilot signal; the range of values ​​for the power parameter of the pilot signal can be changed according to the actual scenario (e.g., power ratios include 5%, 10%, 15%, and 20%); and the number of CDM groups can be changed according to the actual scenario. The design methods for the mapping relationship between the CDM group and the power parameters of the pilot signal under different scenarios are not listed in the embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto.

[0172] In summary, the method provided in this application illustrates a method for determining the power parameters of pilot signals based on CDM groups. For superimposed signals, in order to correctly distinguish the pilot signals corresponding to different data streams during multi-layer data stream transmission, code division multiplexing (CDM) is used to achieve orthogonality of different antenna ports (or different pilot signals). This allows network devices and / or terminal devices to separate the pilot signals transmitted by each antenna port based on OCC, thereby achieving multiplexing of transmission resources and improving resource utilization. Furthermore, a method for indicating CDM groups is also shown, where the CDM group is directly indicated through a first signaling signal, which is beneficial for matching with the first signaling format in related technologies.

[0173] Scenario 6: The first parameter includes transmission resources.

[0174] In some embodiments, the first parameter includes transmission resources; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: determining the power parameter of the pilot signal in the superimposed signal based on the transmission resources.

[0175] In some embodiments, determining the power parameters of the pilot signals in the superimposed signals based on transmission resources can be understood as determining the power parameters of different pilot signals for transmission resources of different granularities.

[0176] In some embodiments, there is a one-to-one relationship between transmission resources and power parameters; or, there is a many-to-one relationship between transmission resources and power parameters.

[0177] Next, we will introduce transmission resources of different granularities, from fine granularity to coarse granularity.

[0178] (1) Resource unit.

[0179] For example, the power parameters of the pilot signal are different on each allocated RE, just as the power ratio of the DMRS is different on each allocated RE. In this scenario, network devices and / or terminal devices can implement channel estimation and / or data channel detection based on the following methods.

[0180] Method 1: AI / ML models are configured separately at the transmitter and receiver. The AI / ML models at the transmitter and receiver are paired, meaning they are models trained on the same dataset for transmission and / or reception. Taking DMRS as an example, the AI / ML models at the transmitter and receiver are specifically used to allocate the power parameters occupied by the DMRS. Because the AI / ML models at the transmitter and receiver are pre-trained and paired, the receiver is capable of performing channel estimation for DMRS with different powers on different REs and decoding the data channel.

[0181] Method 2: Before transmitting the superimposed signal, the network device pre-configures the power parameters of the DMRS on different REs via RRC signaling. Although the number of REs is large, considering the configuration capacity of RRC signaling and the relatively relaxed latency, pre-configuration via RRC does not affect the transmission of the superimposed signal, making it a feasible solution. That is, combining Situation 6 and Situation 1, the network device sends a first signaling (i.e., RRC signaling), which carries a first parameter. The first parameter includes at least one first indication information. Each of the at least one first indication information is used to indicate the power parameter of the pilot signal on the RE corresponding to the first indication information; or, each of the at least one first indication information is used to indicate the power parameter of the pilot signal on the RE corresponding to the first indication information from at least two candidate power parameters.

[0182] (2) OFDM symbol.

[0183] For example, the power parameters of the pilot signal are different for each allocated OFDM symbol, such as the power ratio of the DMRS, which can be different for each allocated OFDM symbol. For instance, for downlink transmission, the first two or three OFDM symbols in a slot are PDCCH, and the subsequent 12 to 11 OFDM symbols are allocated to PDSCH. For uplink transmission, all 14 OFDM symbols in the slot can be allocated to PUSCH. In this case, the DMRS of the first PDSCH or PUSCH symbol occupies 5% of the data channel's transmission power, the DMRS of the second PDSCH or PUSCH symbol occupies 10% of the data channel's transmission power, and so on, until the last OFDM symbol of the data channel. It should be noted that if 6G uses a waveform different from LTE or NR, i.e., a waveform different from OFDM, the DMRS power ratio allocation scheme based on modulation symbols in this embodiment still applies.

[0184] In this implementation scenario, the power parameters of pilot signals on different OFDM symbols can be indicated by the first signaling or pre-defined by the protocol. For predefined rules in the protocol, such as allocating a higher DMRS power (e.g., 20%) when the number of OFDM symbols in the scheduled PDSCH is less than a certain number (e.g., 7 OFDM symbols), then a higher DMRS power can be allocated. Conversely, if 12 OFDM symbols in the PDSCH are scheduled, a lower DMRS power (e.g., 5%) can be used. That is, when the power parameters of pilot signals are determined based on OFDM symbols, different power parameters can be set for OFDM symbols belonging to different channels, while OFDM symbols belonging to the same channel use the same power parameters. For example, if the first two OFDM symbols in a slot are PDCCH, and the subsequent 12 OFDM symbols are allocated to PDSCH, then the first two OFDM symbols are allocated a higher DMRS power (e.g., 20%), while the subsequent 12 OFDM symbols are allocated a lower DMRS power (e.g., 5%). Alternatively, different power parameter value ranges can be assigned to OFDM symbols belonging to different channels, allowing different OFDM symbols within the same channel to use the same or different power parameters. For example, if the first two OFDM symbols in a slot are PDCCHs and the following 12 OFDM symbols are assigned to PDSCHs, then the first two OFDM symbols can be allocated a higher DMRS power range, such as [30%, 40%], with a step size of 5%, while the following 12 OFDM symbols can be allocated a lower DMRS power range, such as [5%, 20%], with a step size of 5%. This would result in the following: for the first PDSCH symbol, the DMRS occupies 30% of the data channel transmission power; for the second PDSCH symbol, the DMRS occupies 35% of the data channel transmission power; for the first to third PUSCH symbols, the DMRS occupies 5% of the data channel transmission power; for the fourth to sixth PUSCH symbols, the DMRS occupies 10% of the data channel transmission power; for the seventh to ninth PUSCH symbols, the DMRS occupies 15% of the data channel transmission power; and for the tenth to twelfth PUSCH symbols, the DMRS occupies 20% of the data channel transmission power.

[0185] In some embodiments, the power parameters of pilot signals on different OFDM symbols can be indicated by a first signaling, i.e., scenario six and scenario one can be combined. The power ratio of DMRS for different OFDM symbols can be given in the scheduling information of DCI or pre-configured based on RRC. The network device sends a first signaling (i.e., DCI or RRC signaling), which carries a first parameter. The first parameter includes at least one first indication information. Each of the at least one first indication information is used to indicate the power parameters of the pilot signals on the OFDM symbol corresponding to the first indication information; or, each of the at least one first indication information is used to indicate the power parameters of the pilot signals on the OFDM symbol corresponding to the first indication information from at least two candidate power parameters.

[0186] (3)RB.

[0187] For example, the power parameters of the pilot signal are different on each allocated RB, just as the power ratio of the DMRS can be different on each allocated RB. Similarly, the DMRS power allocation information for different RBs can be given in the DCI scheduling information, or it can be pre-configured based on RRC, or it can be supported by rules defined in the protocol. For details, please refer to the description of "(2) OFDM symbol" above, which will not be repeated here.

[0188] (4) Sub-band.

[0189] For example, the power parameters of the pilot signal are different in each allocated subband, such as the power ratio of the DMRS, which can be different in each allocated subband (generally containing several RBs). Similarly, the DMRS power allocation information for different subbands can be given in the DCI scheduling information, or it can be pre-configured based on RRC, or it can be supported by rules defined in the protocol. For details, please refer to the description of "(2) OFDM symbols" above, which will not be repeated here.

[0190] (5)RBG.

[0191] For example, the power parameters of the pilot signal are different in each allocated RBG, just as the power ratio of the DMRS can be different in each allocated RBG (which generally contains several RBs). Similarly, the DMRS power allocation information for different RBGs can be given in the DCI scheduling information, or it can be pre-configured based on RRC, or it can be supported by rules defined in the protocol. For details, please refer to the description of "(2) OFDM symbol" above, which will not be repeated here.

[0192] (6) Full bandwidth.

[0193] For example, the power parameters of the pilot signal are different across each allocated full bandwidth, such as the power ratio of the DMRS, which can be different across each scheduled full bandwidth (generally including all RBs on the component carrier). The DMRS power allocation information on different component carriers can be given in the DCI scheduling information, pre-configured based on RRC, or supported by rules defined in the protocol. For details, please refer to the description above for "(2) OFDM symbols", which will not be repeated here.

[0194] (7) Frequency band.

[0195] For example, the power parameters of the pilot signal are different in each allocated frequency band, just as the power ratio of the DMRS can be different in each frequency band. The DMRS power allocation information in different frequency bands can be pre-configured based on RRC, or it can be supported by rules defined in the protocol. For details, please refer to the description of "(2) OFDM symbol" above, which will not be repeated here. Here, a frequency band is a specific frequency range, usually expressed in megahertz (MHz) or gigahertz (GHz). A frequency band can contain multiple component carriers.

[0196] In summary, the method provided in this application illustrates a method for determining the power parameters of pilot signals based on the granularity of transmission resources. By allocating power at a finer granularity (such as RE granularity), power can be adjusted more precisely according to channel conditions and user needs, thereby improving spectral efficiency. Simultaneously, different granularity power allocation methods allow the system to dynamically adjust power based on real-time channel conditions and user needs, further optimizing the utilization of spectrum resources. By rationally allocating power, mutual interference between different users can be reduced, thereby improving signal quality. This method offers greater flexibility, adapting to different application scenarios and requirements, thereby optimizing the overall performance of the communication system.

[0197] It should be noted that, in addition to being implemented as independent embodiments, scenarios one through six described above can also be implemented as combined embodiments. For example, the combined implementation of scenarios one and six shown in scenario six. Furthermore, scenarios one and two, scenarios one and three, scenarios one and four, scenarios one and five, scenarios two and three, scenarios two and four, scenarios two and five, scenarios two and six, scenarios three and four, scenarios three and five, scenarios three and six, scenarios four and five, scenarios four and six, scenarios five and six, and so on. Besides the pairwise combinations shown above, combinations can also be three-three, four-four, five-five, or all six scenarios one through six, etc. Examples of implementation combinations include: scenarios 1, 2, and 3; scenarios 1, 2, and 4; scenarios 1, 2, and 5; scenarios 1, 2, and 6; scenarios 1, 3, and 4; scenarios 1, 3, and 5; scenarios 1, 3, and 6; scenarios 1, 4, and 5; scenarios 1, 4, and 6; and scenarios 1, 5, and 6. Additionally, examples of implementation combinations include: scenarios 1, 2, 3, and 4; scenarios 1, 2, 3, and 5; scenarios 1, 2, 3, and 6; scenarios 1, 3, 4, and 5; scenarios 1, 3, 4, and 6; and scenarios 1, 4, 5, and 6. For example, scenarios 1, 2, 3, 4, and 5 can be implemented in combination; scenarios 1, 2, 3, 4, and 6 can be implemented in combination; scenarios 1, 3, 4, 5, and 6 can be implemented in combination; scenarios 1, 2, 4, 5, and 6 can be implemented in combination; and scenarios 1, 2, 3, 5, and 6 can be implemented in combination. This application only lists some combined embodiments of scenarios 1 to 6, but the scope of protection of this application is not limited thereto. Next, some combined embodiments of the above-mentioned combined embodiments will be briefly described.

[0198] For example, as shown in Table 1 above, when the power ratio is 5%, 10%, 15%, 20%, 25%, 30%, 35%, or 40%, the first indication information requires at least 3 bits. If the power ratio is divided into finer-grained values, more bits are needed to indicate the power ratio. Therefore, it is possible to combine the first parameter for indication, such as using the first parameter to indicate at least two candidate power parameters in the candidate power parameter set, and then using the first indication information to indicate the power parameter of the pilot signal from the at least two candidate power parameters. For example, combining scenario one with scenario two, scenario one with scenario three, scenario one with scenario four, scenario one with scenario five, and so on.

[0199] In some embodiments, Situation 1 and Situation 2 are implemented in combination. The first signaling includes a first parameter, which includes a second MCS index and first indication information. The second MCS index is used to indicate at least two candidate power parameters corresponding to the second MCS and the second MCS. The first indication information is used to indicate the power parameters of the pilot signal from the at least two candidate power parameters.

[0200] For example, the range of DMRS power allocation ratios corresponding to different MCS indices can be limited. For instance, MCS indices from 0 to 3 can only correspond to β values ​​of 5% or 10%; MCS indices from 4 to 7 can correspond to β values ​​of 10% or 15%, and so on. This allows for further reduction of signaling overhead for the first indication information when the MCS index is specified in the first signaling. In the example above, for MCS values ​​in the range of 4 to 7, only 1 bit of signaling overhead is needed to indicate the power ratio of the data channel occupied by 10% or 15% of the DMRS.

[0201] For the combination of scenario one and scenario three or scenario four or scenario five, the combination of scenario one and scenario two is the same as that of scenario two above. That is, at least two candidate power parameters are determined by the first parameter (number of transmission layers, antenna port, CDM group), and the power parameters of the pilot signal are indicated by the first indication information.

[0202] In some embodiments, Situation 1 and Situation 6 are implemented in combination. For specific implementation methods, please refer to “(1) Resource Unit” and “(2) OFDM Symbol” in Situation 6 above, which will not be repeated here.

[0203] In addition, when scenario one is combined with any one of scenarios two through six, the network device may determine the power parameters according to any one of scenarios two through six, and then use the indication method shown in scenario one, that is, indicate the power parameters determined by the network device to the terminal device through the first indication information.

[0204] In some embodiments, when at least two of Scenarios 1 to 6 are combined, the network device may determine the power parameters based on at least two of Scenarios 2 to 6, and then use the indication method shown in Scenarios 1, i.e., indicate the power parameters determined by the network device to the terminal device through the first indication information. When the power parameters are determined based on at least two of Scenarios 2 to 6, the network device may agree on a mapping relationship between the power parameters and at least one first parameter, or the network device may configure the mapping relationship between the power parameters and at least one first parameter, etc. For example, the protocol may agree on a mapping relationship between MCS, the number of transmission layers, and the power parameters, or agree on a mapping relationship between the number of transmission layers, the antenna port, and the power parameters, etc. The embodiments of this application will not list all the combined embodiments of Scenarios 1 to 6, but the protection scope of the embodiments of this application is not limited thereto.

[0205] For at least two candidate power parameters, in addition to indicating at least two candidate power parameters through the first parameter as shown in the above "Combined Implementation of Scenarios 1 and 2", the network device or protocol can provide a set of candidate power parameters, and then the network device can activate or deactivate at least two candidate power parameters according to the actual scenario (such as channel conditions, data reliability requirements, etc.), as shown below.

[0206] In some embodiments, the network device sends a second signaling message for activating or deactivating at least two candidate power parameters in a set of candidate power parameters; wherein the set of candidate power parameters is configured by the network device or agreed upon by a protocol.

[0207] In some embodiments, the terminal device receives a second signaling message, which is used to activate or deactivate at least two candidate power parameters in a candidate power parameter set; wherein the candidate power parameter set is configured by the network device or agreed upon by a protocol.

[0208] In some embodiments, the second signaling is MAC CE.

[0209] Optionally, the network device configures at least two candidate power parameters via RRC signaling, and then uses DCI to indicate the power parameter of the pilot signal from the at least two candidate power parameters before transmission; or, the network device configures a set of candidate power parameters via RRC signaling, activates or deactivates the candidate power parameters via MAC CE (i.e., the second signaling), thereby determining at least two candidate power parameters in the set of candidate power parameters, and then uses DCI to indicate the power parameter of the pilot signal from the at least two candidate power parameters before transmission.

[0210] For example, if the RRC signaling configures a large number of candidate power parameters, it will increase the signaling overhead of the first indication information in the DCI. For instance, if 16 different candidate power parameters are configured, a 4-bit indication field needs to be used in the scheduled DCI for dynamic indication. This increases the signaling overhead of valuable control information. To control the signaling overhead in the DCI, MAC CE can be used to activate or deactivate candidate power parameters before transmission. For example, MAC CE selects four candidate power parameters from the 16 candidate power parameters configured in the RRC to activate, such as 5%, 10%, 15%, and 30%. Then the first indication information in the DCI does not require the fixed 4-bit overhead, but only requires 2 bits, where "00", "01", "10", and "11" correspond to the aforementioned four candidate power parameters respectively. When channel conditions or transmission scenarios change, such as when the distance between the terminal device and the network device changes, the network device can use MAC CE to activate at least two currently active candidate power parameters and activate at least two new candidate power parameters, so that at least two candidate power parameters meet the current channel conditions or transmission scenarios.

[0211] In some other embodiments, if the MAC CE activates only one candidate power parameter, such as 10%, then no subsequent DCI indication is needed, and it can be directly used to determine the power parameter. That is, the MAC CE at this time can be understood as the first signaling.

[0212] In summary, the method provided in this application demonstrates the use of a second signaling to activate or deactivate at least two candidate power parameters in a candidate power parameter set. This minimizes DCI signaling overhead in scenarios where network devices configure numerous candidate power parameters via RRC signaling. Furthermore, the second signaling allows network devices to activate or deactivate corresponding candidate power parameters based on different transmission scenarios, saving DCI signaling overhead while increasing the selectivity of candidate power parameters and thus enhancing the flexibility of power parameter allocation for pilot signals. Moreover, using MAC CE signaling as the second signaling follows the established positioning of different signaling methods in related technologies: RRC configuration, MAC CE activation, and DCI indication. This provides high flexibility to adapt to different application scenarios and requirements. For example, RRC configuration can be dynamically adjusted based on UE capabilities and network status; MAC CE activation can be flexibly scheduled based on real-time channel conditions and system load; and DCI indication can dynamically adjust resource allocation based on different scheduling requirements. This method is highly compatible with network architectures and protocol standards in related technologies, enabling seamless integration into current systems and ensuring stable system operation.

[0213] Figure 8 shows a structural block diagram of a network device provided in an exemplary embodiment of this application. The network device includes:

[0214] The first determining module 410 is used to determine the power parameters of the pilot signal in the superimposed signal, where the superimposed signal is the signal obtained by superimposing the pilot signal and the data signal. Specifically, the first determining module 410 is used to determine the power parameters of the pilot signal in the superimposed signal; or, in other words, to determine the power parameters of the pilot signal and the power parameters of the data signal; or, to determine the power parameters of the pilot signal and the transmission power of the data signal; or, to further, to determine the power ratio of the pilot signal and the transmission power of the data signal. It should be noted that the above descriptions are different descriptions with the same meaning and can be replaced according to requirements.

[0215] In some embodiments, the power parameters of the pilot signal are predetermined by the protocol; or, the power parameters of the pilot signal are pre-configured; or, the power parameters of the pilot signal are configured by the network device; or, the power parameters of the pilot signal are negotiated by the network device and the terminal device.

[0216] In some embodiments, the network device includes a first transmitting module and / or a first receiving module. The power parameters of the pilot signal are used by the network device to transmit and / or receive a superimposed signal. For example, the power parameters of the pilot signal are used by the network device to transmit the superimposed signal, that is, the first determining module 410 determines the power parameters of the pilot signal, superimposes the pilot signal and the data signal based on the power parameters of the pilot signal to obtain a superimposed signal, and then the first transmitting module transmits the superimposed signal. Alternatively, the power parameters of the pilot signal are used by the network device to receive the superimposed signal. That is, the first receiving module receives the superimposed signal, the first determining module 410 determines the power parameters of the pilot signal, and then performs channel estimation and symbol detection on the superimposed signal based on the power parameters of the pilot signal to obtain the data signal. Specifically, the first determining module 410 separates the pilot signal and the data signal based on the power parameters of the pilot signal, and performs channel estimation based on the separated pilot signal and the power parameters of the pilot signal. Then, it demodulates the data signal through the estimated channel to obtain the information (or data) carried by the data signal. In this embodiment, the order of determining the power parameters of the pilot signal and receiving the superimposed signal is not limited. That is, the network device can receive the superimposed signal first and then determine the power parameters of the pilot signal; or the network device can determine the power parameters of the pilot signal first and then receive the superimposed signal.

[0217] In summary, the apparatus illustrated in this application supports data transmission between network devices and terminal devices using superimposed signals. Compared to traditional orthogonal pilot methods, the superimposed pilot method avoids mutual interference between pilot symbols and data symbols. Furthermore, by superimposing pilot and data signals, the pilot signal does not consume additional transmission resources. These saved transmission resources can be used to transmit uplink and downlink data channels, control channels, or other reference signals, improving the throughput of the communication system. In addition, traditional orthogonal pilot methods rely on channel estimation for the reference channel to decode the data channel. In high-speed mobile scenarios or severe multipath fading scenarios, channel estimation methods based on pilot signal interpolation may lead to performance bottlenecks in block error rate (BLER) and throughput. On the other hand, a method for determining the power parameters of the pilot signal is illustrated, enabling network devices to allocate power between the pilot and data signals in the superimposed signal. This ensures the transmission of the superimposed signal, allowing network devices or terminal devices to correctly demodulate the data carried by the data signal based on the power parameters of the pilot signal, thus improving the reliability of data transmission.

[0218] Figure 9 shows a structural block diagram of a terminal device provided in an exemplary embodiment of this application. The terminal device includes:

[0219] The second determining module 510 is used to determine the power parameters of the pilot signal in the superimposed signal, wherein the superimposed signal is the signal obtained by superimposing the pilot signal and the data signal.

[0220] Determine the power parameters of the pilot signal in the superimposed signal; or, in other words, determine the power parameters of the pilot signal and the power parameters of the data signal; alternatively, determine the power parameters of the pilot signal and the transmission power of the data signal; furthermore, determine the transmission power of the pilot signal and the transmission power of the data signal; or even, determine the power ratio of the pilot signal and the transmission power of the data signal. It should be noted that the above descriptions are different ways of describing the same thing and can be replaced as needed.

[0221] In some embodiments, the power parameters of the pilot signal are predetermined by the protocol; or, the power parameters of the pilot signal are pre-configured; or, the power parameters of the pilot signal are configured by the network device; or, the power parameters of the pilot signal are negotiated by the network device and the terminal device.

[0222] In some embodiments, the terminal device includes a second transmitting module and / or a second receiving module. The power parameters of the pilot signal are used by the terminal device to transmit and / or receive a superimposed signal. For example, the power parameters of the pilot signal are used by the terminal device to transmit the superimposed signal, that is, the second determining module 510 determines the power parameters of the pilot signal, superimposes the pilot signal and the data signal based on the power parameters of the pilot signal to obtain a superimposed signal, and then the second transmitting module transmits the superimposed signal. Alternatively, the power parameters of the pilot signal are used by the terminal device to receive the superimposed signal. That is, the second receiving module receives the superimposed signal, the second determining module 510 determines the power parameters of the pilot signal, and then performs channel estimation and symbol detection on the superimposed signal based on the power parameters of the pilot signal to obtain the data signal. Specifically, the second determining module 510 separates the pilot signal and the data signal based on the power parameters of the pilot signal, and performs channel estimation based on the separated pilot signal and the power parameters of the pilot signal. Then, it demodulates the data signal through the estimated channel to obtain the information (or data) carried by the data signal. In this embodiment, the order of determining the power parameters of the pilot signal and receiving the superimposed signal is not limited. That is, the terminal device can receive the superimposed signal first and then determine the power parameters of the pilot signal; or the terminal device can determine the power parameters of the pilot signal first and then receive the superimposed signal.

[0223] In summary, the apparatus illustrated in this application supports data transmission between network devices and terminal devices using superimposed signals. Compared to traditional orthogonal pilot methods, the superimposed pilot method avoids mutual interference between pilot symbols and data symbols. Furthermore, by superimposing pilot and data signals, the pilot signal does not consume additional transmission resources. These saved transmission resources can be used to transmit uplink and downlink data channels, control channels, or other reference signals, improving the throughput of the communication system. In addition, traditional orthogonal pilot methods rely on channel estimation for the reference channel to decode the data channel. In high-speed mobile scenarios or severe multipath fading scenarios, channel estimation methods based on pilot signal interpolation may lead to performance bottlenecks in block error rate (BLER) and throughput. On the other hand, a method for determining the power parameters of the pilot signal is illustrated, enabling network devices to allocate power between the pilot and data signals in the superimposed signal. This ensures the transmission of the superimposed signal, allowing network devices or terminal devices to correctly demodulate the data carried by the data signal based on the power parameters of the pilot signal, thus improving the reliability of data transmission.

[0224] The following examples further illustrate the method for determining the power parameters of pilot signals.

[0225] In some embodiments, the first determining module 410 is used to determine the power parameters of the pilot signal in the superimposed signal based on the first parameter.

[0226] In some embodiments, the second determining module 510 is used to determine the power parameters of the pilot signal in the superimposed signal based on the first parameter.

[0227] In some embodiments, the first parameter is a parameter related to the pilot signal; or, the first parameter is a parameter related to the data signal; or, the first parameter is a parameter related to the superimposed signal.

[0228] In some embodiments, the first parameter is determined by the network device and / or terminal device based on channel conditions, UE capabilities, protocol rules, etc. The first parameter can be understood as the transmission parameters of the superimposed signal.

[0229] In some embodiments, the first determining module 410 is configured to determine the power parameter of the pilot signal from at least two candidate power parameters based on a first parameter. In some embodiments, the second determining module 510 is configured to determine the power parameter of the pilot signal from at least two candidate power parameters based on the first parameter.

[0230] In some embodiments, at least two candidate power parameters are pre-configured by the network device; or, at least two candidate power parameters are agreed upon by a protocol; or, at least two candidate power parameters are activated by the network device in a candidate power parameter set via a second signaling, and the candidate power parameter set is pre-configured by the network device; or, at least two candidate power parameters are activated by the network device in a candidate power parameter set via a second signaling, and the candidate power parameter set is agreed upon by a protocol; or, at least two candidate power parameters are determined based on a first parameter.

[0231] That is, in some embodiments, the first parameter is used to determine the power parameter of the pilot signal from at least two candidate power parameters; or, the first parameter is used to indicate the power parameter of the pilot signal from at least two candidate power parameters; or, the first parameter is used to indicate at least two candidate power parameters, wherein the power parameter of the pilot signal is determined by the network device and / or the terminal device itself.

[0232] In some embodiments, the first transmitting module is configured to transmit a first signaling, the first signaling being used to indicate the power parameters of the pilot signal.

[0233] In some embodiments, the second receiving module is configured to receive a first signaling signal, the first signaling signaling being used to indicate the power parameters of the pilot signal.

[0234] In some embodiments, the first signaling is RRC (Radio Resource Control) signaling; or, the first signaling is MAC CE signaling; or, the first signaling is DCI (Downlink Control Information).

[0235] In some embodiments, the first signaling includes a first parameter. The first parameter is used to indicate the power parameter of the pilot signal; or, the first parameter is used to indicate at least two candidate power parameters; or, the first parameter is used to determine the power parameter of the pilot signal from at least two candidate power parameters; or, the first parameter is used to indicate the power parameter of the pilot signal from at least two candidate power parameters.

[0236] In some embodiments, the first parameter and the power parameter have a one-to-one relationship; or, the first parameter and the power parameter have a one-to-many relationship; or, the first parameter and the power parameter have a many-to-one relationship; or, the first parameter and the power parameter have a many-to-many relationship; or, the first parameter and the power parameter have a corresponding relationship.

[0237] In summary, the apparatus provided in this application provides a method for determining the power parameters of the pilot signal based on a first parameter, ensuring compatibility between devices from different manufacturers. Furthermore, by introducing a method to determine the pilot signal's power parameters from at least two candidate power parameters, which can be dynamically configured via higher-layer signaling (such as RRC), it adapts to changes in network load or the introduction of new services, facilitating flexible expansion of network services. Moreover, network devices can indicate the pilot signal's power parameters by sending the first signaling, enabling coordination and scheduling based on measured overall channel conditions and specific transmission scenarios, thus facilitating optimized resource scheduling and interference coordination.

[0238] Next, we will further explain the method for determining the power parameter of the pilot signal, taking into account the value type of the first parameter.

[0239] Scenario 1: The first parameter includes first indication information. Scenario 2: The first parameter includes MCS. Scenario 3: The first parameter includes the number of transmission layers. Scenario 4: The first parameter includes the antenna port. Scenario 5: The first parameter includes the CDM group. Scenario 6: The first parameter includes transmission resources.

[0240] It should be noted that the order in which they are presented does not indicate the superiority or inferiority of each method.

[0241] Scenario 1: The first parameter includes the first instruction information.

[0242] In some embodiments, the first signaling includes a first parameter, which includes first indication information. The first indication information is used to indicate the power parameter of the pilot signal; or, the first indication information is used to determine the power parameter of the pilot signal from at least two candidate power parameters; or, the first indication information is used to indicate the power parameter of the pilot signal from at least two candidate power parameters.

[0243] For details, please refer to "Scenario 1: The first parameter includes the first indication information" in the above method embodiments, which will not be repeated here.

[0244] Scenario 2: The first parameter includes MCS.

[0245] In some embodiments, the first parameter includes the MCS; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: determining the power parameter of the pilot signal in the superimposed signal based on the MCS.

[0246] In some embodiments, the power parameter of the pilot signal satisfies at least one of the following characteristics: the lower the MCS, the higher the power parameter; the lower the MCS level, the higher the power parameter; MCS is negatively correlated with power parameter; MCS level is negatively correlated with power parameter.

[0247] In some embodiments, the first signaling includes a first parameter, which includes a first MCS index. The first MCS index is used to indicate the power parameters of the first MCS and the pilot signal corresponding to the first MCS.

[0248] For details, please refer to "Scenario 2: The first parameter includes MCS" in the above method embodiment, which will not be repeated here.

[0249] Scenario 3: The first parameter includes the number of transport layers.

[0250] In some embodiments, the first parameter includes the number of transmission layers; the first determining module 410 is used to determine the power parameter of the pilot signal in the superimposed signal based on the number of transmission layers. In some embodiments, the first parameter includes the number of transmission layers; the second determining module 510 is used to determine the power parameter of the pilot signal in the superimposed signal based on the number of transmission layers.

[0251] In some embodiments, the power parameter of the pilot signal satisfies at least one of the following characteristics: the higher the number of transmission layers, the higher the power parameter; the number of transmission layers is positively correlated with the power parameter.

[0252] In some embodiments, the first signaling includes a first parameter, which includes a first transmission layer number; the first transmission layer number is used to indicate the power parameter of the pilot signal corresponding to the first transmission layer number. Optionally, the first transmission layer number is used to indicate the transmission layer number currently scheduled by the network device. The network device or terminal device determines the power parameter of the pilot signal corresponding to the first transmission layer number based on the first transmission layer number and the mapping relationship between the transmission layer number and the power parameter of the pilot signal. It can be understood that the first transmission layer number is used to indicate the transmission layer number currently scheduled by the network device and the power parameter of the pilot signal corresponding to the first transmission layer number.

[0253] In some embodiments, the network device does not directly indicate the scheduled transport layer number, but indirectly through other transport parameters. For example, the first signaling includes a first parameter, which includes at least one antenna port. The at least one antenna port is used to indicate the currently scheduled antenna port, and it is also used to determine the first transport layer number and the power parameters of the pilot signal corresponding to the first transport layer number; or, the first signaling includes antenna port information, the first parameter includes the first transport layer number, and the antenna port information is used to determine the first transport layer number; the first transport layer number is used to indicate the power parameters of the pilot signal corresponding to the first transport layer number.

[0254] For details, please refer to "Scenario 3: The first parameter includes the number of transmission layers" in the above method embodiments, which will not be repeated here.

[0255] Scenario 4: The first parameter includes the antenna port.

[0256] In some embodiments, the first parameter includes an antenna port; a first determining module 410 is configured to determine the power parameter of the pilot signal in the superimposed signal based on the antenna port. In some embodiments, the first parameter includes an antenna port; a second determining module 510 is configured to determine the power parameter of the pilot signal in the superimposed signal based on the antenna port.

[0257] In some embodiments, the relationship between the antenna port and the power parameter is one-to-one; or, the relationship between the antenna port and the power parameter is many-to-one.

[0258] In some embodiments, the first signaling includes a first parameter, the first parameter including a first antenna port; the first antenna port is used to indicate the power parameter of the pilot signal corresponding to the first antenna port.

[0259] In some embodiments, the first signaling includes a first parameter, the first parameter including at least one antenna port; each of the at least one antenna port is used to indicate the power parameter of the pilot signal corresponding to that antenna port.

[0260] For details, please refer to "Scenario 4: The first parameter includes the antenna port" in the above method embodiment, which will not be repeated here.

[0261] Scenario 5: The first parameter includes the CDM group.

[0262] In some embodiments, the first parameter includes a CDM group; a first determining module 410 is used to determine the power parameter of the pilot signal in the superimposed signal based on the CDM group. In some embodiments, the first parameter includes a CDM group; a second determining module 510 is used to determine the power parameter of the pilot signal in the superimposed signal based on the CDM group.

[0263] In some embodiments, the power parameters of at least two pilot signals corresponding to different CDM groups are different; and / or, the power parameters of each pilot signal in at least two pilot signals corresponding to the same CDM group are the same.

[0264] In some embodiments, the first signaling includes a first parameter, which includes a first CDM group; the first CDM group is used to indicate the power parameters of the pilot signal corresponding to the first CDM group.

[0265] For details, please refer to "Scenario 5: The first parameter includes the CDM group" in the above method embodiment, which will not be repeated here.

[0266] Scenario 6: The first parameter includes transmission resources.

[0267] In some embodiments, the first parameter includes transmission resources; the first determining module 410 is used to determine the power parameters of the pilot signal in the superimposed signal based on the transmission resources.

[0268] In some embodiments, the first parameter includes transmission resources; the second determining module 510 is used to determine the power parameters of the pilot signal in the superimposed signal based on the transmission resources.

[0269] In some embodiments, determining the power parameters of the pilot signals in the superimposed signals based on transmission resources can be understood as determining the power parameters of different pilot signals for transmission resources of different granularities.

[0270] In some embodiments, there is a one-to-one relationship between transmission resources and power parameters; or, there is a many-to-one relationship between transmission resources and power parameters.

[0271] For details, please refer to "Scenario Six: The first parameter includes transmission resources" in the above method embodiments, which will not be repeated here.

[0272] In some embodiments, Scenarios 1 and 2 are implemented in combination. The first signaling includes a first parameter, which includes a second MCS index and first indication information. The second MCS index is used to indicate at least two candidate power parameters corresponding to the second MCS and the second MCS. The first indication information is used to indicate the power parameters of the pilot signal from the at least two candidate power parameters. For the at least two candidate power parameters, in addition to indicating the at least two candidate power parameters through the first parameter as shown in the above "Scenarios 1 and 2 combined implementation", the network device or protocol can provide a set of candidate power parameters, and then the network device can activate or deactivate the at least two candidate power parameters according to the actual scenario (such as channel conditions, data reliability requirements, etc.), as shown below.

[0273] In some embodiments, the first transmitting module is configured to transmit a second signaling, the second signaling being used to activate or deactivate at least two candidate power parameters in a candidate power parameter set; wherein the candidate power parameter set is configured by the network device or agreed upon by a protocol.

[0274] In some embodiments, the second receiving module is configured to receive a second signaling, which is used to activate or deactivate at least two candidate power parameters in a candidate power parameter set; wherein the candidate power parameter set is configured by the network device or agreed upon by a protocol. In some embodiments, the second signaling is a MAC CE.

[0275] It should be noted that the device provided in the above embodiments is only an example of the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0276] Regarding the apparatus in this embodiment, the specific manner in which each module performs its operations has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0277] Figure 10 shows a schematic diagram of the structure of a network device provided in an exemplary embodiment of this application. The network device 600 can be used to execute the method steps performed by the network device in the above embodiments. The network device 600 may include: a processor 601, a transceiver 602, and a memory 603. The processor 601 can be used to control transmission and / or reception. The transceiver 602 can be used to implement transmission and / or reception functions.

[0278] The processor 601 includes one or more processing cores. The processor 601 executes various functional applications and information processing by running software programs and modules.

[0279] Transceiver 602 may include a receiver and a transmitter. For example, transceiver 602 may include a wired communication component, which may include a wired communication chip and a wired interface (such as a fiber optic interface). Optionally, transceiver 602 may also include a wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0280] The memory 603 can be connected to the processor 601 and the transceiver 602.

[0281] The memory 603 can be used to store a computer program executed by the processor, and the processor 601 is used to execute the computer program to implement the various steps performed by the network device in the above method embodiments.

[0282] Furthermore, memory 603 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static on-demand memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0283] In some embodiments, processor 601 and / or transceiver 602 are configured to determine the power parameter of the pilot signal in the superimposed signal, wherein the superimposed signal is a signal obtained by superimposing the pilot signal and the data signal. In some embodiments, processor 601 and / or transceiver 602 are configured to determine the power parameter of the pilot signal in the superimposed signal based on a first parameter. In some embodiments, processor 601 and / or transceiver 602 are configured to determine the power parameter of the pilot signal from at least two candidate power parameters based on the first parameter. In some embodiments, processor 601 and / or transceiver 602 are configured to transmit a first signaling, wherein the first signaling is used to indicate the power parameter of the pilot signal.

[0284] In some embodiments, as shown in Situation 1 above, the first signaling includes a first parameter, which includes first indication information. The first indication information is used to indicate the power parameter of the pilot signal; or, the first indication information is used to determine the power parameter of the pilot signal from at least two candidate power parameters; or, the first indication information is used to indicate the power parameter of the pilot signal from at least two candidate power parameters. For details, please refer to "Situation 1: The first parameter includes first indication information" in the above method embodiments, which will not be repeated here. In some embodiments, as shown in Situation 2 above, the processor 601 and / or transceiver 602 are used to determine the power parameter of the pilot signal in the superimposed signal based on the MCS. For details, please refer to "Situation 2: The first parameter includes the MCS" in the above method embodiments, which will not be repeated here. In some embodiments, as shown in Situation 3 above, the processor 601 and / or transceiver 602 are used to determine the power parameter of the pilot signal in the superimposed signal based on the number of transmission layers. For details, please refer to "Situation 3: The first parameter includes the number of transmission layers" in the above method embodiments, which will not be repeated here. In some embodiments, as shown in Situation 4 above, processor 601 and / or transceiver 602 are used to determine the power parameters of the pilot signal in the superimposed signal based on the antenna port. For details, please refer to "Situation 4: The first parameter includes the antenna port" in the above method embodiments, which will not be repeated here. In some embodiments, as shown in Situation 5 above, processor 601 and / or transceiver 602 are used to determine the power parameters of the pilot signal in the superimposed signal based on the CDM group. For details, please refer to "Situation 5: The first parameter includes the CDM group" in the above method embodiments, which will not be repeated here. In some embodiments, as shown in Situation 6 above, processor 601 and / or transceiver 602 are used to determine the power parameters of the pilot signal in the superimposed signal based on transmission resources. For details, please refer to "Situation 6: The first parameter includes transmission resources" in the above method embodiments, which will not be repeated here.

[0285] In some embodiments, the processor 601 and / or transceiver 602 are used to send a second signaling, which is used to activate or deactivate at least two candidate power parameters in a candidate power parameter set; wherein the candidate power parameter set is configured by the network device or agreed upon by a protocol.

[0286] For details not described in this embodiment, please refer to the embodiments above, which will not be repeated here.

[0287] Figure 11 shows a schematic diagram of the structure of a terminal device provided in an exemplary embodiment of this application. The terminal device 700 can be used to execute the method steps performed by the terminal device in the above embodiments. The terminal device 700 may include: a processor 701, a transceiver 702, and a memory 703. The processor 701 can be used to control transmission and / or reception. The transceiver 702 can be used to implement transmission and / or reception functions.

[0288] The processor 701 includes one or more processing cores. The processor 701 executes various functional applications and information processing by running software programs and modules.

[0289] The transceiver 702 may include a receiver and a transmitter. For example, the receiver and transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0290] The memory 703 can be connected to the processor 701 and the transceiver 702.

[0291] The memory 703 can be used to store a computer program executed by the processor, and the processor 701 is used to execute the computer program to implement the various steps in the above method embodiments.

[0292] Furthermore, the memory 703 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static on-demand memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0293] In some embodiments, the processor 701 and / or transceiver 702 are used to determine the power parameters of the pilot signal in the superimposed signal, wherein the superimposed signal is the signal obtained by superimposing the pilot signal and the data signal.

[0294] In some embodiments, the processor 701 and / or transceiver 702 are used to determine the power parameters of the pilot signal in the superimposed signal based on the first parameter.

[0295] In some embodiments, processor 701 and / or transceiver 702 are used to determine the power parameters of the pilot signal from at least two candidate power parameters based on a first parameter.

[0296] In some embodiments, processor 701 and / or transceiver 702 are configured to receive a first signaling, the first signaling being configured to indicate the power parameters of the pilot signal.

[0297] In some embodiments, as shown in Situation 1 above, the first signaling includes a first parameter, which includes first indication information. The first indication information is used to indicate the power parameter of the pilot signal; or, the first indication information is used to determine the power parameter of the pilot signal from at least two candidate power parameters; or, the first indication information is used to indicate the power parameter of the pilot signal from at least two candidate power parameters. For details, please refer to "Situation 1: The first parameter includes first indication information" in the above method embodiments, which will not be repeated here. In some embodiments, as shown in Situation 2 above, the processor 701 and / or transceiver 702 are used to determine the power parameter of the pilot signal in the superimposed signal based on the MCS. For details, please refer to "Situation 2: The first parameter includes the MCS" in the above method embodiments, which will not be repeated here. In some embodiments, as shown in Situation 3 above, the processor 701 and / or transceiver 702 are used to determine the power parameter of the pilot signal in the superimposed signal based on the number of transmission layers. For details, please refer to "Situation 3: The first parameter includes the number of transmission layers" in the above method embodiments, which will not be repeated here. In some embodiments, as shown in Situation 4 above, processor 701 and / or transceiver 702 are used to determine the power parameters of the pilot signal in the superimposed signal based on the antenna port. For details, please refer to "Situation 4: The first parameter includes the antenna port" in the above method embodiments, which will not be repeated here. In some embodiments, as shown in Situation 5 above, processor 701 and / or transceiver 702 are used to determine the power parameters of the pilot signal in the superimposed signal based on the CDM group. For details, please refer to "Situation 5: The first parameter includes the CDM group" in the above method embodiments, which will not be repeated here. In some embodiments, as shown in Situation 6 above, processor 701 and / or transceiver 702 are used to determine the power parameters of the pilot signal in the superimposed signal based on transmission resources. For details, please refer to "Situation 6: The first parameter includes transmission resources" in the above method embodiments, which will not be repeated here.

[0298] In some embodiments, the processor 701 and / or transceiver 702 are configured to receive a second signaling, which is used to activate or deactivate at least two candidate power parameters in a candidate power parameter set; wherein the candidate power parameter set is configured by the network device or agreed upon by a protocol.

[0299] For details not described in this embodiment, please refer to the embodiments above, which will not be repeated here.

[0300] This application also provides a computer-readable storage medium storing a computer program for execution by a processor to implement the above-described indicated method. In some embodiments, the computer-readable storage medium may include ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives), or optical disc, etc. The random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0301] In one exemplary embodiment of this application, a computer-readable storage medium is also provided, storing at least one program segment. This program segment is loaded and executed by a processor and / or transceiver, and the computer-readable storage medium implements the power parameter determination method provided in the various method embodiments described above. In one exemplary embodiment of this application, a chip is also provided, including programmable logic circuitry and / or program instructions. When the chip runs on a network device, it is used to implement the power parameter determination method provided in the various method embodiments described above. In one exemplary embodiment of this application, a chip is also provided, including programmable logic circuitry and / or program instructions. When the chip runs on a terminal device, it is used to implement the power parameter determination method provided in the various method embodiments described above. In one exemplary embodiment of this application, a computer program product is also provided. When this computer program product runs on the processor and / or transceiver of a wireless device, it causes the wireless device to execute the power parameter determination method described above. In one exemplary embodiment of this application, a computer program is also provided, including computer instructions. The processor and / or transceiver of the wireless device execute the computer instructions, causing the wireless device to execute the power parameter determination method described above. In one exemplary embodiment of this application, a chip is also provided, which is applied to a terminal device. This chip is used to determine the power parameters of a pilot signal in a superimposed signal, wherein the superimposed signal is a signal obtained by superimposing the pilot signal and a data signal. In another exemplary embodiment of this application, a chip is also provided, which is applied to a network device. This chip is used to determine the power parameters of a pilot signal in a superimposed signal, wherein the superimposed signal is a signal obtained by superimposing the pilot signal and a data signal.

[0302] It should be understood that the term "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of an association. For example, A instructing B can mean that A directly instructs B, for example, B can be obtained through A; it can also mean that A indirectly instructs B, for example, A instructs C, B can be obtained through C; or it can mean that there is an association between A and B. In the description of the embodiments of this application, the term "corresponding" can mean that there is a direct or indirect correspondence between two things, or that there is an association between two things, or it can mean an instruction and being instructed, a configuration and being configured, etc. The term "multiple" mentioned herein refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following associated objects are in an "or" relationship. The term "greater than or equal to" mentioned herein can mean greater than or equal to, or greater than; and "less than or equal to" can mean less than or equal to, or less than. Furthermore, the step numbers described herein are merely illustrative of one possible execution order among the steps. In some other embodiments, the steps may not be executed in the numerical order, such as two steps with different numbers being executed simultaneously, or two steps with different numbers being executed in the reverse order of the illustration. This application does not limit this. Those skilled in the art should recognize that the functions described in the above one or more examples can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transmission of computer programs from one place to another. Storage media can be any available medium accessible to general-purpose or special-purpose computers.

[0303] The above are merely exemplary embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

1. A method for determining power parameters, characterized in that, The method is performed by a network device, and the method includes: Determine the power parameters of the pilot signal in the superimposed signal, wherein the superimposed signal is the signal obtained by superimposing the pilot signal and the data signal.

2. The method according to claim 1, characterized in that, The power parameters of the pilot signal include at least one of the following: transmission power; power ratio, wherein the power ratio is used to indicate the ratio of the transmission power of the pilot signal to the transmission power of the data signal.

3. The method according to claim 1 or 2, characterized in that, Determining the power parameters of the pilot signal in the superimposed signal includes: The power parameters of the pilot signal in the superimposed signal are determined based on the first parameter.

4. The method according to claim 3, characterized in that, Determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: Based on the first parameter, the power parameter of the pilot signal is determined from at least two candidate power parameters.

5. The method according to any one of claims 1 to 4, characterized in that, The method further includes: Send a first signaling instruction, which is used to indicate the power parameters of the pilot signal.

6. The method according to claim 5, characterized in that, The first signaling includes the first parameter, the first parameter including first indication information; the first indication information is used to indicate the power parameter of the pilot signal; or, the first indication information is used to determine the power parameter of the pilot signal from at least two candidate power parameters.

7. The method according to any one of claims 4 to 6, characterized in that, The at least two candidate power parameters are pre-configured by the network device; or, the at least two candidate power parameters are agreed upon by a protocol; or, the at least two candidate power parameters are activated by the network device in a candidate power parameter set via a second signaling, and the candidate power parameter set is pre-configured by the network device; or, the at least two candidate power parameters are activated by the network device in a candidate power parameter set via a second signaling, and the candidate power parameter set is agreed upon by the protocol; or, the at least two candidate power parameters are determined based on the first parameter.

8. The method according to any one of claims 3 to 7, characterized in that, The first parameter includes at least one of the following: modulation and coding scheme (MCS); number of transmission layers; antenna port; code division multiplexing (CDM) group; and transmission resources.

9. The method according to any one of claims 3 to 8, characterized in that, The first parameter has a one-to-one relationship with the power parameter; or, the first parameter has a one-to-many relationship with the power parameter; or, the first parameter has a many-to-one relationship with the power parameter; or, the first parameter has a many-to-many relationship with the power parameter; or, the first parameter has a corresponding relationship with the power parameter.

10. The method according to any one of claims 3 to 9, characterized in that, The first parameter includes MCS; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: The power parameters of the pilot signal in the superimposed signal are determined based on the MCS.

11. The method according to claim 10, characterized in that, The power parameter of the pilot signal satisfies at least one of the following characteristics: the lower the MCS, the higher the power parameter; the lower the MCS level, the higher the power parameter; the MCS is negatively correlated with the power parameter; the MCS level is negatively correlated with the power parameter.

12. The method according to any one of claims 5 to 11, characterized in that, The first signaling includes the first parameter, which includes a first MCS index. The first MCS index is used to indicate the power parameters of the first MCS and the pilot signal corresponding to the first MCS.

13. The method according to any one of claims 5 to 11, characterized in that, The first signaling includes the first parameter, which includes a second MCS index and first indication information; the second MCS index is used to indicate the second MCS and at least two candidate power parameters corresponding to the second MCS; the first indication information is used to indicate the power parameter of the pilot signal from the at least two candidate power parameters.

14. The method according to any one of claims 3 to 13, characterized in that, The first parameter includes the number of transmission layers; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: The power parameters of the pilot signal in the superimposed signal are determined based on the number of transmission layers.

15. The method according to claim 14, characterized in that, The power parameter of the pilot signal satisfies at least one of the following characteristics: the higher the number of transmission layers, the higher the power parameter; the number of transmission layers is positively correlated with the power parameter.

16. The method according to any one of claims 5 to 15, characterized in that, The first signaling includes a first parameter, which includes a first transmission layer number; the first transmission layer number is used to indicate the power parameter of the pilot signal corresponding to the first transmission layer number.

17. The method according to any one of claims 5 to 15, characterized in that, The first signaling includes antenna port information, and the first parameter includes a first transmission layer number. The antenna port information is used to determine the first transmission layer number. The first transmission layer number is used to indicate the power parameter of the pilot signal corresponding to the first transmission layer number.

18. The method according to any one of claims 3 to 17, characterized in that, The first parameter includes the antenna port; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: The power parameters of the pilot signal in the superimposed signal are determined based on the antenna port.

19. The method according to claim 18, characterized in that, The antenna port and the power parameter have a one-to-one relationship; or, the antenna port and the power parameter have a many-to-one relationship.

20. The method according to any one of claims 5 to 19, characterized in that, The first signaling includes the first parameter, which includes a first antenna port; the first antenna port is used to indicate the power parameter of the pilot signal corresponding to the first antenna port.

21. The method according to any one of claims 3 to 20, characterized in that, The first parameter includes a CDM group; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: The power parameters of the pilot signal in the superimposed signal are determined based on the CDM group.

22. The method according to claim 21, characterized in that, The power parameters of at least two pilot signals corresponding to different CDM groups are different; and / or, the power parameters of each pilot signal in at least two pilot signals corresponding to the same CDM group are the same.

23. The method according to any one of claims 5 to 22, characterized in that, The first signaling includes the first parameter, which includes a first CDM group; the first CDM group is used to indicate the power parameters of the pilot signal corresponding to the first CDM group.

24. The method according to any one of claims 3 to 23, characterized in that, The first parameter includes transmission resources; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: The power parameters of the pilot signal in the superimposed signal are determined based on the transmission resources.

25. The method according to claim 24, characterized in that, The transmission resource and the power parameter have a one-to-one relationship; or, the transmission resource and the power parameter have a many-to-one relationship.

26. The method according to claim 8, 24, or 25, characterized in that, The transmission resource is any of the following: resource element (RE); orthogonal frequency division multiplexing (OFDM) symbol; resource block (RB); subband; resource block group (RBG); full bandwidth; frequency band.

27. The method according to any one of claims 5 to 26, characterized in that, The first signaling is Radio Resource Control (RRC) signaling; or, the first signaling is Downlink Control Information (DCI).

28. The method according to any one of claims 1 to 27, characterized in that, The method further includes: Send a second signaling message, which is used to activate or deactivate at least two candidate power parameters in the candidate power parameter set; The candidate power parameter set is configured by the network device or agreed upon by the protocol.

29. The method according to claim 28, characterized in that, The second signaling is the Media Access Control Unit (MAC CE).

30. The method according to any one of claims 1 to 29, characterized in that, The pilot signal is the demodulation reference signal DMRS.

31. The method according to any one of claims 1 to 30, characterized in that, The data signal is carried in at least one of the following channels: Physical Downlink Shared Channel (PDSCH); Physical Uplink Shared Channel (PUSCH); Physical Downlink Control Channel (PDCCH); Physical Uplink / Downlink Control Channel (PUCCH).

32. A method for determining power parameters, characterized in that, The method is executed by a terminal device, and the method includes: Determine the power parameters of the pilot signal in the superimposed signal, wherein the superimposed signal is the signal obtained by superimposing the pilot signal and the data signal.

33. The method according to claim 32, characterized in that, The power parameters of the pilot signal include at least one of the following: transmission power; power ratio, wherein the power ratio is used to indicate the ratio of the transmission power of the pilot signal to the transmission power of the data signal.

34. The method according to claim 32 or 33, characterized in that, Determining the power parameters of the pilot signal in the superimposed signal includes: The power parameters of the pilot signal in the superimposed signal are determined based on the first parameter.

35. The method according to claim 34, characterized in that, Determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: Based on the first parameter, the power parameter of the pilot signal is determined from at least two candidate power parameters.

36. The method according to any one of claims 32 to 35, characterized in that, The method further includes: Receive a first signaling instruction, which is used to indicate the power parameters of the pilot signal.

37. The method according to claim 36, characterized in that, The first signaling includes the first parameter, the first parameter including first indication information; the first indication information is used to indicate the power parameter of the pilot signal; or, the first indication information is used to determine the power parameter of the pilot signal from at least two candidate power parameters.

38. The method according to any one of claims 35 to 37, characterized in that, The at least two candidate power parameters are pre-configured by the network device; or, the at least two candidate power parameters are agreed upon by a protocol; or, the at least two candidate power parameters are activated by the network device in a candidate power parameter set via a second signaling, and the candidate power parameter set is pre-configured by the network device; or, the at least two candidate power parameters are activated by the network device in a candidate power parameter set via a second signaling, and the candidate power parameter set is agreed upon by the protocol; or, the at least two candidate power parameters are determined based on the first parameter.

39. The method according to any one of claims 34 to 38, characterized in that, The first parameter includes at least one of the following: modulation and coding scheme (MCS); number of transmission layers; antenna port; code division multiplexing (CDM) group; and transmission resources.

40. The method according to any one of claims 34 to 39, characterized in that, The first parameter has a one-to-one relationship with the power parameter; or, the first parameter has a one-to-many relationship with the power parameter; or, the first parameter has a many-to-one relationship with the power parameter; or, the first parameter has a many-to-many relationship with the power parameter; or, the first parameter has a corresponding relationship with the power parameter.

41. The method according to any one of claims 34 to 40, characterized in that, The first parameter includes MCS; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: The power parameters of the pilot signal in the superimposed signal are determined based on the MCS.

42. The method according to claim 41, characterized in that, The power parameter of the pilot signal satisfies at least one of the following characteristics: the lower the MCS, the higher the power parameter; the lower the MCS level, the higher the power parameter; the MCS is negatively correlated with the power parameter; the MCS level is negatively correlated with the power parameter.

43. The method according to any one of claims 36 to 42, characterized in that, The first signaling includes the first parameter, which includes a first MCS index. The first MCS index is used to indicate the power parameters of the first MCS and the pilot signal corresponding to the first MCS.

44. The method according to any one of claims 36 to 42, characterized in that, The first signaling includes the first parameter, which includes a second MCS index and first indication information; the second MCS index is used to indicate the second MCS and at least two candidate power parameters corresponding to the second MCS; the first indication information is used to indicate the power parameter of the pilot signal from the at least two candidate power parameters.

45. The method according to any one of claims 34 to 44, characterized in that, The first parameter includes the number of transmission layers; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: The power parameters of the pilot signal in the superimposed signal are determined based on the number of transmission layers.

46. ​​The method according to claim 45, characterized in that, The power parameter of the pilot signal satisfies at least one of the following characteristics: the higher the number of transmission layers, the higher the power parameter; the number of transmission layers is positively correlated with the power parameter.

47. The method according to any one of claims 36 to 46, characterized in that, The first signaling includes a first transmission layer number; the first transmission layer number is used to indicate the power parameters of the pilot signal corresponding to the first transmission layer number.

48. The method according to any one of claims 36 to 46, characterized in that, The first signaling includes antenna port information, and the first parameter includes a first transmission layer number. The antenna port information is used to determine the first transmission layer number. The first transmission layer number is used to indicate the power parameter of the pilot signal corresponding to the first transmission layer number.

49. The method according to any one of claims 34 to 47, characterized in that, The first parameter includes the antenna port; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: The power parameters of the pilot signal in the superimposed signal are determined based on the antenna port.

50. The method according to claim 49, characterized in that, The antenna port and the power parameter have a one-to-one relationship; or, the antenna port and the power parameter have a many-to-one relationship.

51. The method according to any one of claims 36 to 50, characterized in that, The first signaling includes the first parameter, which includes a first antenna port; the first antenna port is used to indicate the power parameter of the pilot signal corresponding to the first antenna port.

52. The method according to any one of claims 34 to 51, characterized in that, The first parameter includes a CDM group; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: The power parameters of the pilot signal in the superimposed signal are determined based on the CDM group.

53. The method according to claim 52, characterized in that, The power parameters of at least two pilot signals corresponding to different CDM groups are different; and / or, the power parameters of each pilot signal in at least two pilot signals corresponding to the same CDM group are the same.

54. The method according to any one of claims 36 to 53, characterized in that, The first signaling includes the first parameter, which includes a first CDM group; the first CDM group is used to indicate the power parameters of the pilot signal corresponding to the first CDM group.

55. The method according to any one of claims 34 to 54, characterized in that, The first parameter includes transmission resources; determining the power parameter of the pilot signal in the superimposed signal based on the first parameter includes: The power parameters of the pilot signal in the superimposed signal are determined based on the transmission resources.

56. The method according to claim 55, characterized in that, The transmission resource and the power parameter have a one-to-one relationship; or, the transmission resource and the power parameter have a many-to-one relationship.

57. The method according to claim 39, 55, or 56, characterized in that, The transmission resource is any of the following: resource element (RE); orthogonal frequency division multiplexing (OFDM) symbol; resource block (RB); subband; resource block group (RBG); full bandwidth; frequency band.

58. The method according to any one of claims 36 to 57, characterized in that, The first signaling is Radio Resource Control (RRC) signaling; or, the first signaling is Downlink Control Information (DCI).

59. The method according to any one of claims 32 to 58, characterized in that, The method further includes: Receive a second signaling, the second signaling being used to activate or deactivate at least two candidate power parameters in the candidate power parameter set; The candidate power parameter set is configured by the network device or agreed upon by the protocol.

60. The method according to claim 59, characterized in that, The second signaling is the Media Access Control Unit (MAC CE).

61. The method according to any one of claims 32 to 60, characterized in that, The pilot signal is the demodulation reference signal DMRS.

62. The method according to any one of claims 32 to 61, characterized in that, The data signal is carried in at least one of the following channels: Physical Downlink Shared Channel (PDSCH); Physical Uplink Shared Channel (PUSCH); Physical Downlink Control Channel (PDCCH); Physical Uplink / Downlink Control Channel (PUCCH).

63. A network device, characterized in that, The network device includes: The first determining module is used to determine the power parameters of the pilot signal in the superimposed signal, wherein the superimposed signal is the signal obtained by superimposing the pilot signal and the data signal.

64. A terminal device, characterized in that, The terminal device includes: The second determining module is used to determine the power parameters of the pilot signal in the superimposed signal, wherein the superimposed signal is the signal obtained by superimposing the pilot signal and the data signal.

65. A network device, characterized in that, The network device includes: a processor; a transceiver connected to the processor; wherein the processor and / or the transceiver is configured to load and execute the executable instructions to implement the method for determining power parameters as described in any one of claims 1 to 31.

66. A terminal device, characterized in that, The terminal device includes: a processor; a transceiver connected to the processor; wherein the processor and / or the transceiver are configured to load and execute the executable instructions to implement the method for determining power parameters as described in any one of claims 32 to 62.

67. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one program, which is loaded and executed by a processor and / or transceiver to implement the method for determining power parameters as described in any one of claims 1 to 62.

68. A chip, characterized in that, The chip includes programmable logic circuitry and / or program instructions, which, when the chip is running on a network device, are used to implement the method for determining the power parameters as described in any one of claims 1 to 31.

69. A chip, characterized in that, The chip includes programmable logic circuitry and / or program instructions, which, when the chip is running on a terminal device, are used to implement the method for determining the power parameters as described in any one of claims 32 to 62.

70. A computer program product, characterized in that, The computer program product includes computer instructions stored in a computer-readable storage medium, from which a processor retrieves the computer instructions, and the processor and / or transceiver executes the computer instructions to implement the method for determining power parameters as described in any one of claims 1 to 62.

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