Wireless communication methods and devices

Abstract

The present application provides wireless communication methods and devices. A method comprises: a first device transmits multiple streams of pilot signals, wherein some or all of transmission resources occupied by the pilot signals of different streams among the multiple streams of pilot signals are different from each other, and the transmission resources occupied by the pilot signals are some or all of transmission resources occupied by transmission data.

Description

Wireless communication method and device Technical Field

[0001] The present application relates to the field of communication technologies, and more particularly, to wireless communication methods and devices. Background Art

[0002] To improve data transmission resource utilization, pilot signals and data can be transmitted in a non-orthogonal superposition. However, interference between the pilot signals and data can increase the decoding complexity at the receiver. In particular, when multiple streams of pilot signals and data are superimposed, the receiver may not be able to perform effective decoding and / or channel estimation.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method and device. The following introduces various aspects involved in the present application.

[0005] In a first aspect, a wireless communication method is provided, including: a first device transmits a multi-stream pilot signal, wherein pilot signals of different streams in the multi-stream pilot signal occupy different portions or all of transmission resources, and the transmission resources occupied by the pilot signal are portions or all of the transmission resources occupied by transmitted data.

[0006] According to a second aspect, a wireless communication method is provided, including: a second device transmits a multi-stream pilot signal, wherein pilot signals of different streams in the multi-stream pilot signal occupy different parts or all of the transmission resources, and the transmission resources occupied by the pilot signal are part or all of the transmission resources occupied by the transmitted data.

[0007] According to a third aspect, a wireless communication device is provided, which is a first device, and includes: a first transmission unit, configured to transmit a multi-stream pilot signal, wherein the pilot signals of different streams in the multi-stream pilot signal occupy different portions or all of the transmission resources, and the transmission resources occupied by the pilot signal are portions or all of the transmission resources occupied by the transmitted data.

[0008] In a fourth aspect, a wireless communication device is provided, which is a second device, and the device includes: a first transmission unit, used to transmit a multi-stream pilot signal, wherein the pilot signals of different streams in the multi-stream pilot signal occupy different parts or all of the transmission resources, and the transmission resources occupied by the pilot signal are part or all of the transmission resources occupied by the transmitted data.

[0009] In a fifth aspect, a wireless communication device is provided, comprising a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory so that the device executes part or all of the steps in the method of the first aspect or the second aspect.

[0010] In a sixth aspect, a wireless communication device is provided, comprising a processor for calling a program from a memory so that the device executes part or all of the steps in the method of the first aspect or the second aspect.

[0011] In a seventh aspect, a chip is provided, comprising a processor for calling a program from a memory so that the chip executes part or all of the steps in the method of the first aspect or the second aspect.

[0012] In an eighth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a wireless communication device to execute part or all of the steps in the method of the first aspect or the second aspect.

[0013] In a ninth aspect, a computer program product is provided, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a communication device to perform some or all of the steps of the methods of the various aspects described above. In some implementations, the computer program product may be a software installation package.

[0014] In a tenth aspect, a computer program is provided, which enables a wireless communication device to perform part or all of the steps in the method of the first aspect or the second aspect.

[0015] Unlike related art techniques that superimpose multi-stream pilot signals and data on the same transmission resources, embodiments of the present application can superimpose pilot signals of some streams within a multi-stream pilot signal and data on the same transmission resources. That is, pilot signals of different streams occupy different portions or all of the transmission resources. This reduces the number of pilot signal streams transmitted on the same transmission resource, helping to increase the transmission power of the pilot signals and / or data on the transmission resource, thereby reducing interference between the pilot signals and data and improving system performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a wireless communication system used in an embodiment of the present application.

[0017] FIG2 is a schematic diagram of a neural network applicable to an embodiment of the present application.

[0018] 3A to 3C are schematic diagrams of pilot patterns under different configurations.

[0019] FIG4 is a wireless communication system used in an embodiment of the present application.

[0020] FIG5 is a flow chart of a wireless communication method according to an embodiment of the present application.

[0021] FIG. 6A is an example diagram of resources in different time domains.

[0022] FIG6B is an example diagram of different frequency domain resources.

[0023] FIG6C is a diagram showing an example of resources in different time domains and frequency domains.

[0024] FIG. 7 is a diagram illustrating an example of a transmission scheme in which M-stream data and N-stream pilot signals are superimposed.

[0025] FIG8 is an example diagram of a power allocation scheme for superimposed transmission of M-stream data and a single-stream pilot signal.

[0026] FIG9 is an example diagram of a (time domain) resource allocation scheme for superimposed transmission of 4-stream data and 4 pilot signals.

[0027] FIG10 is an example diagram of another (time domain) resource allocation solution for superimposed transmission of 4-stream data and 4 pilot signals.

[0028] FIG11 is an example diagram of a (frequency domain) resource allocation scheme for superimposed transmission of four data streams and four pilot signals.

[0029] FIG12 is an example diagram of another (frequency domain) resource allocation solution for superimposed transmission of 4-stream data and 4 pilot signals.

[0030] FIG13 is an example diagram of a resource allocation scheme (in the time domain and frequency domain) for superimposed transmission of four data streams and four pilot signals.

[0031] FIG14 is an example diagram of another resource allocation solution (in the time domain and frequency domain) for superimposed transmission of four data streams and four pilot signals.

[0032] FIG15 is a schematic diagram of a wireless communication device according to an embodiment of the present application.

[0033] FIG16 is a schematic diagram of another wireless communication device according to an embodiment of the present application.

[0034] FIG17 is a schematic structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0035] The technical solutions in this application will be described below in conjunction with the accompanying drawings. To facilitate understanding of this application, the following first introduces the terms and communication processes involved in the embodiments of this application in conjunction with Figures 1 to 3.

[0036] Signal transmission process in wireless communication systems

[0037] Figure 1 is a flow chart of signal transmission in a wireless communication system to which an embodiment of the present application is applicable. As shown in Figure 1 , the signal transmission process in the wireless communication system can be roughly divided into multiple signal processing processes S111 to S118 shown in Figure 1 .

[0038] In the channel coding process S111, the transmitter performs channel coding on the information to be transmitted to obtain a coded code stream. The information to be transmitted may be in the form of a bit stream.

[0039] In the modulation process S112 , the code stream is modulated into modulation symbols.

[0040] In the pilot insertion process S113, pilot symbols are inserted into the modulation symbols to form a signal to be transmitted, wherein the pilot symbols can be used by a receiver to perform channel estimation and symbol detection.

[0041] In the transmission signal S114, the above signal is carried on the channel and transmitted to the receiver. In the process of transmitting the signal through the channel, noise is usually superimposed.

[0042] In the channel estimation process S115, the receiver can perform channel estimation based on the reference signal to obtain channel state information (CSI), and feed the CSI back to the transmitter through a feedback link for the transmitter to adjust channel coding, modulation, precoding, etc.

[0043] In the symbol detection process S116, symbol detection is performed on the received modulation symbols to obtain a detection result.

[0044] In the demodulation process S117, the received modulation symbols are demodulated based on the detection result to obtain a code stream.

[0045] In the channel decoding process S118, the code stream is decoded to obtain restored information, wherein the restored information may be in the form of a bit stream.

[0046] It should be understood that the signal processing processes S111 to S118 shown in FIG1 are merely exemplary examples of common signal processing processes in wireless communication systems. Wireless communication systems may also include signal processing processes such as resource mapping, precoding, interference cancellation, and CSI measurement. These signal processing processes can also be implemented through separate artificial intelligence (AI) models. For the sake of brevity, this application will not go into detail.

[0047] Channel Estimation

[0048] Due to the complexity and time-varying nature of wireless channel environments, in wireless communication systems (e.g., the wireless communication systems described above), a receiver needs to recover received signals based on channel estimation results. Figure 2 is a schematic diagram of channel estimation and signal recovery applicable to embodiments of the present application.

[0049] As shown in FIG2 , in step S210 , the transmitter transmits, in addition to the data signal, a series of reference signals known to the receiver on the time-frequency resources, such as the channel state information-reference signal (CSI-RS) and the demodulation reference signal (DMRS).

[0050] In step S211, the transmitter transmits the above-mentioned data signal and reference signal to the transmitter through the channel.

[0051] The time-frequency resources occupied by the reference signal are different from the time-frequency resources occupied by the data signal.

[0052] In step S212, after receiving the reference signal, the receiver may perform channel estimation. In one possible implementation, the receiver may estimate channel information of the channel transmitting the reference signal using a channel estimation algorithm (e.g., a least squares (LS) channel estimation) based on a pre-stored reference signal and the received reference signal.

[0053] In step S213, the receiver may recover the channel information on all time-frequency resources using an interpolation algorithm based on the channel information of the channel transmitting the pilot sequence, for use in subsequent CSI feedback or data recovery.

[0054] As described above in conjunction with Figure 2, the time-frequency resources used to transmit reference signals are different from those used to transmit data signals. Furthermore, some communication protocols (e.g., the NR communication protocol) specify that the symbols used to transmit reference signals (hereinafter referred to as "pilot symbols") are different from the symbols used to transmit data signals (hereinafter referred to as "data symbols"). Figure 3 shows the patterns of data symbols and pilot symbols under different configurations.

[0055] As shown in Figure 3A , in a resource block (RB), pilot symbols are distributed across multiple REs corresponding to symbol 2 within the RB, spaced one subcarrier apart. As shown in Figure 3B , in an RB, pilot symbols occupy a portion of multiple symbols corresponding to symbols 2 and 8 within the RB. As shown in Figure 3C , in an RB, pilot symbols occupy multiple groups of REs within symbol 2 within the RB, where each group of REs includes two frequency-contiguous transmission resource elements (REs).

[0056] Generally, different patterns in the patterns shown in Figures 3A to 3C can be adapted to different communication environments. In some implementations, when the terminal device is moving at a high speed and the channel characteristics vary rapidly, a pattern with a denser distribution of pilot symbols can be selected to help improve the accuracy of channel quality estimation for the entire RB. For example, the pattern shown in Figure 3B can be selected.

[0057] In other implementations, when the terminal device moves slowly and the channel characteristics vary slowly over time, a pattern with a sparser distribution of pilot symbols can be selected, which helps to reduce the overhead generated by transmitting reference signals while ensuring the accuracy of channel quality estimation for the entire RB.

[0058] The above describes the communication process and terminology involved in the embodiments of the present application in conjunction with Figures 1 to 3, and the following describes the communication system applicable to the embodiments of the present application in conjunction with Figure 4.

[0059] Figure 4 illustrates a wireless communication system used in an embodiment of the present application. Wireless communication system 400 may include a network device 410 and a terminal device 420. Network device 410 may be a device that communicates with terminal device 420. Network device 410 may provide communication coverage for a specific geographic area and may communicate with terminal device 420 within the coverage area.

[0060] FIG4 exemplarily shows a network device and two terminals. Optionally, the wireless communication system 400 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0061] Optionally, the wireless communication system 400 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0062] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0063] The terminal device in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiments of the present application may refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and smart home devices communicate without relaying the communication signal through the base station.

[0064] The network device in the embodiments of the present application may be a device for communicating with a terminal device, and the network device may also be referred to as an access network device or a radio access network device, such as a base station. The network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects a terminal device to a wireless network, a core network device, a model monitoring and management device, or an operation administration and maintenance (OAM) device. The base station can broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmission point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), centralized unit-control plane (CU-CP), centralized unit-user plane (CU-UP) positioning node, etc.

[0065] The base station may be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station may also refer to a communication module, a modem or a chip for being set in the aforementioned device or apparatus. The base station may also be a mobile switching center and a device that performs the base station function in device-to-device D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communications, a network side device in a 6G network, a device that performs the base station function in future communication systems, and the like. The base station may support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network equipment. The base station may be fixed or mobile. For example, a helicopter or a drone may be configured to act as a mobile base station, and one or more cells may move according to the location of the mobile base station. In other examples, a helicopter or a drone may be configured to be used as a device for communicating with another base station.

[0066] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0067] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU. The gNB may also include an AAU.

[0068] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0069] It should be understood that all or part of the functions of the communication device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0070] Pilot signals (also called reference signals) can be placed orthogonally with data in the time, frequency, and code domains. Therefore, given a fixed total transmission resource, if the resource overhead required for pilot signals increases, the resources available for data transmission decrease, resulting in relatively low resource utilization for data transmission.

[0071] Related technologies address this issue by transmitting pilot and data in a non-orthogonal manner, for example, by transmitting both pilot and data simultaneously on the same time and frequency domain resources. Furthermore, advanced receivers, such as artificial intelligence (AI) or machine learning (ML) receivers, can be used to achieve effective channel estimation and / or data reception from the mixed transmission of pilot and data.

[0072] It should be noted that when using the above-mentioned pilot signal and data superimposed hybrid transmission scheme, the data and pilot signals interfere with each other. For example, for data, the pilot signal superimposed on the data interferes with the data; for the pilot, the data superimposed on the pilot signal interferes with the pilot signal. This non-orthogonal transmission scheme for pilot and data significantly increases the complexity of superimposed transmission and reception of pilot and data signals.

[0073] If the above-mentioned pilot signal and data superposition hybrid transmission scheme is used during multi-stream (also known as multi-port) transmission, the receiving end may not be able to effectively parse the pilot signal and data of each stream. This is because when one or more layers of data transmission and one or more layers of pilot transmission are superimposed on the same time-frequency resources, there will be more mutual interference factors. For example, there will be interference between pilot layers, interference between data layers, interference between different data layers on different pilot layers, and interference between different pilot layers on different data layers.

[0074] To address the above issues, the applicant has conducted research and testing on the transmission characteristics of multi-stream pilots and multi-stream data. The applicant has discovered that when one or more layers of data (referred to as multi-stream data) and one or more layers of pilot signals (referred to as multi-stream pilot signals) are superimposed and transmitted on the same time-frequency resources, the parsing and / or channel estimation of each layer of data and each layer of pilot signals is very sensitive to transmission power. For example, the transmission power of the pilot signal is inversely proportional to the complexity of reception; the transmission power of the data is inversely proportional to the complexity of the parsing at the receiving end.

[0075] Based on this, an embodiment of the present application provides a wireless communication method. Unlike related technologies that superimpose and transmit multi-stream pilot signals and data on the same transmission resources, an embodiment of the present application can superimpose and transmit pilot signals of some streams in a multi-stream pilot signal and data on the same transmission resources. That is, pilot signals of different streams occupy different parts or all of the transmission resources. In this way, the number of pilot signal streams transmitted on the same transmission resource can be reduced, which helps to increase the transmission power of the pilot signal and / or data on the transmission resource, thereby helping to reduce interference between the pilot signal and the data and improve system performance.

[0076] The following describes the wireless communication method provided in an embodiment of the present application in conjunction with Figure 5. The method shown in Figure 5 involves a first device and a second device. The first device and the second device can be any of the types of network devices and terminal devices mentioned above. For example, the first device is a first terminal device, and the second device can be a network device or a second terminal device. For another example, the first device is a first network device, and the second device can be a terminal device or a second network device.

[0077] Referring to FIG. 5 , in step S510 , the first device transmits a multi-stream pilot signal.

[0078] The above pilot signal may be referred to as a reference signal. In the embodiment of the present application, the multi-stream pilot signal may also be understood as a pilot signal of multiple ports, a multi-stream reference signal or a reference signal of multiple ports.

[0079] In some embodiments, the multi-stream pilot signal may be transmitted in superposition with some or all of the data. That is, the transmission resources occupied by the multi-stream pilot signal are part of or all of the transmission resources occupied by the transmitted data. For ease of understanding, the data transmitted in superposition with the multi-stream pilot signal is referred to as multi-stream data below. That is, the transmission resources occupied by the multi-stream pilot signal are the transmission resources occupied by the multi-stream data.

[0080] In some embodiments, the multi-stream pilot signal may include a demodulation reference signal (DMRS), a channel state information reference signal (CSI-RS), a phase tracking reference signal (PT-RS), a sounding reference signal (SRS), an SSB synchronization signal block (SS / PBCH block), a positioning reference signal (PRS), etc. The DMRS may be a DMRS reference signal for the multi-stream data described above, or may be a DMRS reference signal for non-multi-stream data.

[0081] In some embodiments, pilot signals of different streams in a multi-stream pilot signal occupy different portions or all of the transmission resources. For example, the transmission resources occupied by each stream pilot signal in a multi-stream pilot signal are different. As an example, a first stream pilot signal is transmitted on a first transmission resource unit or a first set of transmission resource units, and a second stream pilot signal is transmitted on a second transmission resource unit or a second set of transmission resource units. As another example, a multi-stream pilot signal includes multiple groups of pilot signals, and each group of pilot signals occupies different transmission resources. As an example, a first group of pilot signals is transmitted on a first transmission resource unit or a first set of transmission resource units, and a second group of pilot signals is transmitted on a second transmission resource unit or a second set of transmission resource units.

[0082] In some embodiments, pilot signals of different streams in a multi-stream pilot signal occupy different portions or all of time domain transmission resources and / or frequency domain transmission resources.

[0083] Figure 6A illustrates different time domain resources; Figure 6B illustrates different frequency domain resources; and Figure 6C illustrates different resources in both the time and frequency domains. Taking a multi-stream pilot signal including four pilot signals as an example, if each pilot signal occupies a different transmission resource, the four pilot signals can occupy any of resources 1 to 4 in Figure 6A , resources 1 to 4 in Figure 6B , or resources 1 to 4 in Figure 6C . Taking a multi-stream pilot signal including four groups of pilot signals as an example, if each group of pilot signals occupies a different transmission resource, the four groups of pilot signals can occupy any of resources 1 to 4 in Figure 6A , resources 1 to 4 in Figure 6B , or resources 1 to 4 in Figure 6C .

[0084] Taking a four-stream multi-stream pilot signal as an example, in the related art, when the four-stream pilot signal is superimposed and transmitted with data, the four-stream pilot signal occupies the same transmission resources. Unlike the related art, in the embodiments of the present application, at least some of the pilot signals in the four-stream pilot signal occupy different transmission resources. This reduces the number of pilot signal streams transmitted in the resource unit for superimposing the pilot signal and data, helping to increase the transmission power of the pilot signal and / or data on the transmission resource, thereby helping to reduce interference between the pilot signal and the data and improving system performance.

[0085] As mentioned above, the parsing and / or channel estimation of each layer of data and pilot signals is very sensitive to transmission power. Therefore, the present invention provides a power allocation mechanism to solve the power allocation problem of pilot signals and data during the superposition transmission of pilot signals and data.

[0086] In some embodiments, the multi-stream pilot signal may be transmitted at a certain power value to facilitate implementation.

[0087] In some embodiments, the multi-stream pilot signal transmission power can be determined according to the ratio information. For example, the first device or the second device can transmit a first group of pilot signals based on a first ratio, wherein the transmission resources occupied by the first group of pilot signals are the same. The first ratio is the ratio of the transmission power of the first group of pilot signals to the total transmission power corresponding to the transmission resources occupied by the first group of pilot signals. The total transmission power corresponding to the transmission resources occupied by the first group of pilot signals mentioned here can refer to the sum of the power of transmitting data on the transmission resources occupied by the first group of pilot signals and the power of transmitting the pilot signals.

[0088] In some embodiments, the first ratio may be one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, and 60%. Taking into account the utilization rate of data transmission resources, the value of the first ratio may be less than or equal to a first preset threshold (e.g., 60%). The first preset threshold may be determined based on data load, or may be predefined or preconfigured.

[0089] Determining the transmission power of the multi-stream pilot signal through the proportional information helps to balance the transmission power of the pilot signal and the transmission power of the multi-stream data. That is, it helps to avoid the processing complexity of the receiving end or the reception failure caused by the pilot signal transmission power being too low, and also helps to avoid the data parsing complexity or parsing failure caused by the pilot signal transmission power being too high.

[0090] In some embodiments, if the first group of pilot signals includes an A-stream pilot signal, the transmission power of each pilot signal in the A-stream pilot signal may be the same or different. In other words, the transmission power of each pilot signal in the first group of pilot signals may be evenly distributed or unevenly distributed.

[0091] For example, the transmission power of each pilot signal in the a-stream pilot signal may be one a-th of the total transmission power of the first group of pilot signals.

[0092] For another example, the transmission power of each stream pilot signal in the first group of pilot signals is determined according to certain sub-ratio information. As an example, in the a-stream pilot signal, at least two stream pilot signals correspond to different sub-ratios. Taking the first group of pilot signals as an example, which includes at least a first stream pilot signal and a second stream pilot signal, the first stream pilot signal can be transmitted based on a first sub-ratio, where the first sub-ratio is the ratio of the transmission power of the first stream pilot signal to the total transmission power of the first group of pilot signals; the second stream pilot signal can be transmitted based on a second sub-ratio, where the second sub-ratio is the ratio of the transmission power of the second stream pilot signal to the total transmission power of the first group of pilot signals. The first sub-ratio and the second sub-ratio are different.

[0093] It should be noted that, in some embodiments, the sub-ratios corresponding to the pilot signals of each stream may also be the same, that is, even distribution of the pilot signal transmission power may be achieved based on the sub-ratio information.

[0094] In some embodiments, the sub-ratio information may be preconfigured, predefined, or determined based on a usage scenario. For example, the importance of pilot signals may vary in different usage scenarios. Therefore, determining sub-ratio information based on the importance of pilot signals in different usage scenarios can help improve system performance.

[0095] In some embodiments, sub-ratio information, such as the first sub-ratio and the second sub-ratio can be one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, 70%, 80%.

[0096] In some embodiments, multi-stream data transmitted in superposition with a multi-stream pilot signal can be transmitted at a certain power value for ease of implementation; the multi-stream data transmission power can also be determined based on ratio information. For example, the first device or the second device can transmit multi-stream data based on a second ratio, where the second ratio is the ratio of the transmission power of the multi-stream data to the total transmission power corresponding to the transmission resources occupied by the multi-stream pilot signal. The total transmission power mentioned here can refer to the sum of the power of the data transmitted on the transmission resources occupied by the multi-stream pilot signal and the power of the pilot signal transmitted.

[0097] In some embodiments, the second ratio may be one of 99%, 98%, 95%, 90%, 87.5%, 85%, 83.3%, 80%, 75%, 70%, 67%, 65%, 60%, 55%, 50%, and 40%. Taking into account the utilization rate of data transmission resources, the value of the second ratio may be greater than or equal to a second preset threshold (e.g., 40%). The second preset threshold may be determined based on factors such as data load and usage scenarios, or may be predefined or preconfigured.

[0098] Determining the transmission power of multi-stream data through proportional information helps to balance the transmission power of multi-stream data and the transmission power of multi-stream pilot. That is, it helps to avoid the parsing complexity or parsing failure caused by too low multi-stream data transmission power, and also helps to avoid the complexity of pilot signal processing at the receiving end or reception failure caused by too high data transmission power.

[0099] In some embodiments, if the multi-stream data is b-stream data, the transmission power of each stream data in the b-stream data can be the same or different. In other words, the transmission power of each stream data in the b-stream data can be evenly distributed or unevenly distributed.

[0100] For example, the transmission power of each stream data in the b-stream data may be one b-th of the total transmission power of the b-stream data.

[0101] For another example, the transmission power of each data stream in the b-stream data is determined based on certain sub-ratio information. As an example, in the b-stream data, at least two data streams have different sub-ratios. For example, in the b-stream data, at least first data stream and second data stream are included. The first data stream can be transmitted based on a third sub-ratio, where the third sub-ratio is the ratio of the transmission power of the first data stream to the total transmission power of the multi-stream data. The second data stream can be transmitted based on a fourth sub-ratio, where the fourth sub-ratio is the ratio of the transmission power of the second data stream to the total transmission power of the multi-stream data. The third and fourth sub-ratios are different.

[0102] It should be noted that, in some embodiments, the sub-ratios corresponding to each data stream may also be the same, that is, even distribution of data transmission power may be achieved based on the sub-ratio information.

[0103] In some embodiments, sub-ratio information, such as the third sub-ratio and the fourth sub-ratio can be one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, 70%, and 80%.

[0104] It should be noted that the pilot signal transmission power allocation scheme and the data transmission power allocation scheme described above can be implemented in any combination. For example, multi-stream data can be transmitted according to a certain power value, and the transmission power of the multi-stream pilot signal can be determined according to a first ratio. In another example, the multi-stream pilot signal can be transmitted according to a certain power value, and the transmission power of the multi-stream data can be determined according to a second ratio. In another example, the transmission power of the multi-stream data transmitted on the same transmission resource can be evenly distributed, while the transmission power of the multi-stream pilot signal transmitted on the transmission resource can be unevenly distributed, such as determined based on sub-ratio information. In another example, the transmission power of the multi-stream data transmitted on the same transmission resource can be unevenly distributed, such as determined based on sub-ratio information, while the transmission power of the multi-stream pilot signal transmitted on the transmission resource can be evenly distributed. In another example, the transmission power of the multi-stream data and the transmission power of the multi-stream pilot signal transmitted on the same transmission resource can both be evenly distributed or unevenly distributed, such as determined based on sub-ratio information.

[0105] In some embodiments, the power allocation mechanism may be indicated by configuration information. For example, the first device or the second device may obtain first configuration information, where the first configuration information is used to configure a transmission mode of a multi-stream pilot signal and / or a transmission mode of transmitted data.

[0106] In some embodiments, the first configuration information may be determined based on protocol predefined information.

[0107] In some embodiments, the first configuration information can be determined based on indication information of a network device or indication information of a terminal device. For example, if the first device is a terminal device, the first device can receive the first configuration information sent by the network device, or the first device can send the first configuration information to the network device to inform the network device of the power allocation scheme of the pilot signal and / or data. In other words, the second device can send the first configuration information to the first device, or receive the first configuration information sent by the first device. As an example, the first device can directly indicate various parameters in the first configuration information, or can indicate the first configuration information through a power allocation scheme identifier.

[0108] In some embodiments, before the first device or the second device obtains the first configuration information, the first device or the second device may request the first configuration information, such as the first device requesting the first configuration information from the second device.

[0109] In some embodiments, a first device may send capability information to a second device, where the capability information indicates the multi-stream pilot signal transmission mode supported by the first device, and / or the transmission mode for transmitting data. For example, the capability information may include parameters associated with pilot signal or data transmission power, such as the maximum transmission power on a specific resource, the maximum transmission power of a multi-stream pilot signal, the maximum supported first ratio, and the minimum supported second ratio. For another example, the capability information may also include one or more power allocation schemes for pilot signals and / or data. For another example, the capability information may include the correspondence between multi-stream pilot signals and transmission resources, such as which stream pilot signals in a multi-stream pilot signal are transmitted on the same resource, and / or information about the transmission resources occupied by pilot signals transmitted on the same resource, such as symbol and subcarrier information. As an example, the first device may be a terminal device, and the second device may be a network device. That is, the terminal device may send capability information to the network device, where the capability information may indicate the multi-stream pilot signal transmission mode supported and processable by the terminal device, and / or the transmission mode for transmitting data.

[0110] Furthermore, the second device may determine the first configuration information based on the capability information sent by the first device. For example, the second device may send the first configuration information to the first device, wherein the first configuration information is determined based on the capability information. For another example, if the capability information reported by the first device includes one or more power allocation schemes, the second device may send a reply message of the capability information to the first device to indicate the power allocation scheme used by the first device. If the capability information includes a power allocation scheme, the reply message may include whether to apply the power allocation scheme. If the capability information includes multiple power allocation schemes, the reply message may indicate whether to apply the power allocation scheme included in the capability information. Further, if the power allocation scheme in the capability information is applied, the second device may indicate the target power allocation scheme to the first device, such as indicating the target power allocation scheme through a scheme identifier.

[0111] The above-mentioned multiple schemes for determining the first configuration information can be implemented in combination. For example, in the case where the protocol predefines multiple power allocation schemes, the terminal device can determine the power allocation scheme to be used according to the usage scenario, or it can receive the power allocation scheme indicated by the network device. Among them, the network device can configure a target power allocation scheme for the terminal device based on the multiple power allocation schemes predefined by the protocol, such as indicating the target allocation scheme through a scheme identifier to save resources. For another example, the network device can preconfigure multiple power allocation schemes for the terminal device, and then indicate the target power allocation scheme to the terminal device based on the preconfiguration information. For another example, some parameters in the first configuration information are determined based on the information predefined by the protocol, and some parameters are determined based on the indication information of the network device.

[0112] In some embodiments, the transmission mode of the multi-stream pilot signal includes an association between the multi-stream pilot signal and the transmission resource, and / or the transmission power of the multi-stream pilot signal. For example, the association between the multi-stream pilot signal and the transmission resource includes which stream pilot signals in the multi-stream pilot signal are transmitted on the same resource, and / or information about the transmission resources occupied by the pilot signals transmitted on the same resource, such as symbols and subcarriers. As an example, the association between the multi-stream pilot signal and the transmission resource may indicate that each stream pilot signal in the multi-stream pilot signal occupies a different transmission resource, and / or information about the transmission resource occupied by each stream pilot signal, such as the symbol and subcarrier corresponding to the transmission resource. As another example, the association between the multi-stream pilot signal and the transmission resource may indicate the grouping of the multi-stream pilot signal, such as the number of groups included in the multi-stream pilot signal, the number of pilot signal streams included in each group of pilot signals, and the stream identifier of the pilot signal. Each group of pilot signals occupies the same transmission resource. Furthermore, the association relationship between the multi-stream pilot signals and the transmission resources may also indicate information about the transmission resources occupied by each group of pilot signals.

[0113] In some embodiments, the first configuration information can be used to configure a transmission mode for a multi-stream pilot signal, or to configure a transmission mode for multi-stream data. In some embodiments, the first configuration information can also be used to configure a power allocation scheme for pilot signals and data in resources used for superimposed transmission of multi-stream pilot signals and multi-stream data. For example, if the multi-stream pilot signal includes a first group of pilot signals, and the transmitted data includes multi-stream data, and if the first resource unit is used to transmit the first group of pilot signals and multi-stream data, the first configuration information is used to configure the transmission power of the first group of pilot signals and the transmission power of the multi-stream data in the first resource unit.

[0114] In some embodiments, the first configuration information may include or indicate one or more of the following: the number of pilot signal groups included in the multi-stream pilot signal; the number of pilot streams included in each pilot signal group in the pilot signal group; the total transmission power of each pilot signal group; the transmission power of each stream pilot signal in the pilot signal group; the number of data streams included in the multi-stream data; the total transmission power of the multi-stream data and the first group of pilot signals; the total transmission power of the multi-stream data; the transmission power of each stream data in the multi-stream data; a first identifier for indicating the power allocation scheme adopted for transmitting data and / or the multi-stream pilot signal; and a second identifier for indicating the transmission resource allocation scheme for the multi-stream pilot signal; wherein the transmission resources occupied by each pilot signal group are the same, and the transmission resources occupied by the first group of pilot signals are the transmission resources occupied by the multi-stream data.

[0115] In this embodiment of the present application, for a non-orthogonal superposition transmission scheme of pilot signals and data, at least some of the multi-stream pilot signals occupy different transmission resources. Therefore, by indicating the number of pilot signal groups included in the multi-stream pilot signal and the number of pilot streams included in each pilot signal group through first configuration information, pilot signals occupying the same transmission resources and pilot signals occupying different transmission resources can be determined. For example, the first configuration information may also include the number of pilot streams of the multi-stream pilot signal.

[0116] In some embodiments, the first configuration information may further include information about the transmission resources occupied by the multi-stream pilot signal to determine the association between the multi-stream pilot signal and the transmission resource. For example, the first configuration information may include one or more of the type of transmission resource occupied by each stream pilot signal and / or each group of pilot signals (e.g., different time domain resources, different frequency domain resources, or different time-frequency resources), the starting position of the transmission resource, the offset of the transmission resource (e.g., relative to the starting position), and whether the transmission resources occupied by two groups of pilot signals are continuous.

[0117] In some embodiments, the first configuration information may include a second identifier for indicating a transmission resource allocation scheme for the multi-stream pilot signal. For example, the transmission resource allocation scheme for the multi-stream pilot signal may include the aforementioned multi-stream pilot grouping, such as the number of groups and the number of pilot signal streams within each group. The transmission resource allocation scheme for the multi-stream pilot signal may also include the aforementioned association between the multi-stream pilot signal and the transmission resources. Indicating the transmission resource allocation scheme for the multi-stream pilot signal using the second identifier helps reduce the transmission and parsing time of various configuration parameters, thereby improving system efficiency.

[0118] The following describes in detail the parameters associated with the power allocation scheme for the multi-stream pilot and / or multi-stream data in the first configuration information.

[0119] In some embodiments, the first configuration information can be used to indicate the total transmission power of each pilot signal group. Taking the first group of pilot signal groups as an example, the first configuration information can indicate the total transmission power occupied by the a-stream pilot signals in the first group of pilot signal groups. The total transmission power of the first pilot signal group can be indicated by an absolute value or a relative value. The relative value mentioned here can be the difference between the total transmission power of the first pilot signal and the reference value. Indicating the total transmission power of the first pilot signal by a relative value helps to save transmission resources. The reference value can be the transmission power value of a certain stream or a certain group of pilot signals, or it can be the transmission power value of one-stream or multi-stream data, or the reference value can also be a specific reference power. Alternatively, the first configuration information can indicate the total transmission power of each pilot signal group by proportion information, such as the first configuration information can include the first proportion mentioned above.

[0120] In some embodiments, the first configuration information may indicate the transmission power of each stream pilot signal in the pilot signal group. For example, the first configuration information may indicate whether the transmission power of each stream pilot signal in the pilot signal group is evenly distributed or unevenly distributed. In this way, the transmission power of each stream pilot signal can be determined based on the total transmission power of the pilot signal group and the indication of even distribution. For another example, the first configuration information may indicate the transmission power of each stream pilot signal using sub-ratio information. For example, the first configuration information may include the first sub-ratio and second sub-ratio information mentioned above, or sub-ratio information of the transmission power of each stream pilot signal and the total transmission power corresponding to the transmission resource it occupies. In this way, the transmission power of each stream pilot signal can be determined based on the total transmission power of the pilot signal group or the total transmission power of the transmission resource and the sub-ratio information. For another example, the first configuration information may indicate the transmission power of each stream pilot signal in the pilot signal group using an absolute value or a relative value. The relative value mentioned here may be the difference between the transmission power of each stream pilot signal and a reference value. The reference value may be a transmission power value of a certain stream or a certain group of pilot signals, or a transmission power value of one or more streams of data, or a specific reference power.

[0121] As mentioned above, the method provided in the embodiment of the present application can be used for non-orthogonal superposition transmission of multi-stream data and multi-stream pilots. Based on this, the first configuration information can include a power allocation scheme for the multi-stream data.

[0122] In some embodiments, the first configuration information may be used to indicate the number of data streams of the multi-stream data.

[0123] In some embodiments, the first configuration information may be used to indicate the total transmission power of the multi-stream data and the first group of pilot signals and / or the total transmission power of the multi-stream data. For example, the first configuration information may indicate the total transmission power of the multi-stream data using ratio information, such as the second ratio mentioned above. In another example, the first configuration information may indicate the total transmission power of the multi-stream data using an absolute value or a relative value. The relative value mentioned here may be the difference between the total transmission power of the multi-stream data and a reference value. The reference value is determined in the same manner as described above and is not further described here for the sake of brevity.

[0124] In some embodiments, the first configuration information may indicate the transmission power of each data stream in the multi-stream data. For example, the first configuration information may indicate whether the transmission power of each data stream in the multi-stream data is evenly distributed or unevenly distributed. In this way, the transmission power of each data stream can be determined based on the total transmission power of the multi-stream data and the indication of even distribution.

[0125] For another example, the first configuration information may indicate the transmission power of each stream data using sub-ratio information. For example, the first configuration information may include the third sub-ratio and fourth sub-ratio information mentioned above, or sub-ratio information of the transmission power of each stream data and the total transmission power corresponding to the transmission resource it occupies. In this way, the transmission power of each stream data can be determined based on the total transmission power of the multi-stream data or the total transmission power of the transmission resource and the sub-ratio information. For another example, the first configuration information may indicate the transmission power of each stream data in the multi-stream data using an absolute value or a relative value. The relative value mentioned here may be the difference between the transmission power of each stream data and a reference value. The method for determining the reference value can refer to the content described above.

[0126] The relative value or absolute value of the power information can be indicated in the form of db, dBm, etc.

[0127] It should be noted that the aforementioned multiple ratio information and sub-ratio information can be indicated based on absolute values ​​and relative values. For example, the second ratio can be indicated by a relative value to the first ratio or a specific reference ratio.

[0128] In some embodiments, the first configuration information may include the first identifier and / or second identifier mentioned above. If a power allocation scheme and / or pilot transmission scheme is predefined or preconfigured, the first configuration information may indicate the power allocation scheme and / or pilot transmission scheme via the scheme identifier to facilitate implementation. The power allocation scheme and / or pilot transmission scheme, as well as the configuration parameters involved in the scheme, may be predefined by the protocol or indicated by the network device.

[0129] The method provided in the embodiments of the present application can be used in one or more of an uplink transmission process, a downlink transmission process, and an uplink and downlink duplex transmission process. In other words, the multi-stream pilot signal can be an uplink reference signal and / or a downlink reference signal; and the multi-stream data can be uplink data and / or downlink data.

[0130] Based on this, some or all of the parameters in the above-mentioned first configuration information can be applied to the uplink transmission process, the downlink transmission process, or the uplink and downlink duplex transmission process. Specifically, the first configuration information can be the same or different for different types of transmission processes. For example, the power allocation scheme can include one or more of an uplink power allocation scheme, a downlink power allocation scheme, and an uplink and downlink power allocation scheme; the pilot transmission scheme can include one or more of an uplink pilot transmission scheme, a downlink pilot transmission scheme, and an uplink and downlink pilot transmission scheme. Specifically, the pilot transmission scheme and / or power allocation scheme can be the same or different for different types of transmission processes.

[0131] In some embodiments, the first configuration information may include a third identifier, which is used to indicate that the configuration information is used for one or more of an uplink transmission process, a downlink transmission process, and an uplink and downlink duplex transmission process.

[0132] In some embodiments, the first device may request the first configuration information from the second device, and the request message may include the third identifier.

[0133] In some embodiments, the first configuration information may be carried in one or more of the following: a broadcast message; a downlink message in a random access process; a physical downlink control channel (PDCCH); a physical downlink shared channel (PDSCH); and a downlink channel dedicated to artificial intelligence. The broadcast message mentioned here may, for example, include a master information block (MIB), a system information block (SIB) 1 or other SIB messages; the downlink message in the random access process may, for example, include MsgB in a two-step random access process. And / or, Msg2 and / or Msg4 in a four-step random access process. As an example, the first configuration information may also be carried in the capability indication information of the network device.

[0134] In some embodiments, the capability information and / or request message mentioned above may be carried in one or more of the following: radio resource control (RRC) messages; uplink control information (UCI) messages; uplink messages during random access; physical uplink control channel (PUCCH); physical uplink shared channel (PUSCH); and an uplink channel dedicated to artificial intelligence. As an example, the capability information may also be carried in capability indication information of a terminal device.

[0135] Based on the transmission and power allocation scheme for multi-stream pilot signals and multi-stream data provided in the embodiments of the present application, multi-stream pilots and multi-stream data can be transmitted at different power ratios on specific transmission resources, thereby maximizing the pilot transmission power of each stream and ensuring that the data transmission power of each stream is not excessively lost due to the superimposed transmission of the pilots, thereby ensuring the performance of the multi-stream pilot signal superposition scheme and the system gain. In addition, the embodiments of the present application also provide a scheme for aligning the first device and the second device with respect to the transmission scheme and / or power allocation scheme, thereby ensuring that both the transmitting and receiving ends can normally transmit and effectively receive the above-mentioned multi-stream superimposed pilot signal.

[0136] The method provided in the embodiments of the present application is exemplarily introduced below in combination with Example 1 and Example 2.

[0137] Example 1

[0138] Figure 7 illustrates an example of a superimposed transmission scheme for M data streams and N pilot signal streams. Here, M and N are both non-negative integers. It should be noted that in Figure 7, the different layers of the transmission resource represent the transmission power or transmission power ratio of different data streams and different pilot signal streams, respectively.

[0139] When each transmission resource shown in FIG. 7 , such as a resource element (RE), transmits the M-stream data and N-stream pilot signals, the first power allocation scheme may be adopted.

[0140] Among them, the characteristics of the first power allocation scheme may include one or more of the following information: the total transmission power P_total of M-stream data and N-stream (port) pilot signal transmission; the proportion of M-stream data transmission power (P_d) to the total transmission power (such as the second proportion mentioned above); the proportion of N-stream (port) pilot signal transmission power (P_p) to the total transmission power (such as the first proportion mentioned above).

[0141] In some embodiments, for M data streams, when the total power of the M data streams is P_d, the M data streams may evenly distribute the power of P_d. For example, the transmission power of each data stream is P_d / M. In other words, the transmission power ratio of each data stream is one-Mth of the second ratio of the total transmission power on the transmission resource.

[0142] In some embodiments, for M data streams, when the total power of the M data streams is P_d, the power of P_d may not be evenly distributed among the M data streams. For example, the transmission power of the mth data stream is P_d_m, which accounts for the mth sub-proportion of the total power of the M data streams, where m is a positive integer between 1 and M. In other words, the transmission power proportion of the mth data stream is the mth data power sub-proportion within the second proportion of the total transmission power on the transmission resource.

[0143] In some embodiments, for N streams (ports) of pilot signals, when the total power of the N streams (ports) of pilot signals is P_p, the N streams (ports) of pilot signals may evenly distribute the P_p power. For example, the transmission power of each stream of data is P_p / N. In other words, the transmission power ratio of the pilot signal of each stream (port) is one-Nth of the first ratio of the total transmission power on the transmission resource.

[0144] In some embodiments, for N streams (ports) of pilot signals, when the total power of the N streams of pilot signals is P_p, the N streams of pilot signals may not evenly distribute the P_p power. For example, the transmission power of the nth stream (port) pilot signal is P_p_n, which accounts for the nth sub-proportion of the total power of the N streams (ports), where n is a positive integer between 1 and N. In other words, the transmission power proportion of the nth stream (port) pilot signal is the nth pilot power sub-proportion within the first proportion of the total transmission power on the transmission resource.

[0145] Then, in some embodiments, the characteristics of the first power allocation scheme may further include one or more of the above-mentioned ratio information, and / or indication information of whether the power is evenly distributed.

[0146] Six examples of the first power allocation scheme are given below (i.e., Examples 1 to 6). Examples 1 and 2 are power allocation schemes for superimposing M data streams with a single-stream (port) pilot signal; Examples 2 to 6 are power allocation schemes for superimposing M data streams with N-stream (port) pilot signals. M can be, for example, 1, 2, 3, 4, 5, 6, 7, 8, and N can be, for example, 1, 2, 3, 4, 5, 6, 7, 8, and so on. For another example, M is greater than or equal to N.

[0147] Example 1

[0148] FIG8 is an example diagram of a power allocation scheme for superimposed transmission of M-stream data and a single-stream pilot signal.

[0149] Example 1 provides a power allocation scheme for superimposed transmission of M-stream data and a single-stream (port) pilot signal, wherein each stream data is evenly allocated the total transmission power of the M-stream data.

[0150] The characteristics of the above power allocation scheme may include the proportion of M-stream data transmission power (P_d) to the total transmission power, i.e. the second proportion, and the proportion of single-stream (port) pilot signal transmission power (P_p) to the total transmission power, i.e. the first proportion.

[0151] The features of the power allocation scheme may also include information indicating the average power distribution among data streams. For M data streams, when the total power of the M data streams is P_d, the M data streams may be evenly distributed with P_d power. For example, if the transmission power of each data stream is P_d / M, the transmission power ratio of each data stream is one-Mth of the second ratio of the total transmission power on the transmission resource.

[0152] In some embodiments, the second ratio may be: 99%, 98%, 95%, 90%, 87.5%, 85%, 83.3%, 80%, 75%, 70%, 67%, 65%, 60%, 55%, 50%, 40%, etc.

[0153] In some embodiments, the first ratio may be: 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, etc.

[0154] Taking M as 4 as an example, the characteristics of the above power allocation scheme may include one or more of the following: the proportion of the 4-stream data transmission power (P_d) to the total transmission power is the second proportion, for example, 80%; the proportion of the single-stream (port) pilot signal transmission power (P_p) to the total transmission power is the first proportion, for example, 20%.

[0155] For four data streams, when the total power of the four data streams is P_d, the power of P_d can be evenly distributed among the four data streams. For example, the transmission power of each data stream is P_d / 4, and the transmission power ratio of each data stream is one-fourth of the second ratio of the total transmission power on the transmission resource, for example, one-fourth of 80%, that is, 20%.

[0156] For a single-stream (port) pilot signal, the total power of the single-stream (port) pilot signal is P_p, and the transmission power ratio of the single-stream (port) pilot signal is 20% of the total transmission power of the transmission resource.

[0157] Taking M as 2 as an example, the characteristics of the above power allocation scheme may include one or more of the following: the proportion of the 2-stream data transmission power (P_d) to the total transmission power is the second proportion, for example, 80%; the proportion of the single-stream (port) pilot transmission power (P_p) to the total transmission power is the first proportion, for example, 20%.

[0158] For two data streams, when the total power of the two data streams is P_d, the power of P_d can be evenly distributed across the two data streams. For example, the transmission power of each data stream is P_d / 2, and the transmission power ratio of each data stream is half of the second ratio of the total transmission power on the transmission resource, for example, half of 80%, that is, 40%.

[0159] For a single-stream (port) pilot signal, the total power of the single-stream (port) pilot signal is P_p, and the transmission power ratio of the single-stream (port) pilot signal is 20% of the total transmission power of the transmission resource.

[0160] Example 2

[0161] Still referring to FIG8 , Example 2 shows a power allocation scheme for superimposed transmission of M-stream data and a single-stream (port) pilot signal, wherein the total transmission power of the M-stream data is unevenly distributed to each stream data.

[0162] The characteristics of the above power allocation scheme may include the proportion of M-stream data transmission power (P_d) to the total transmission power, i.e. the second proportion, and the proportion of single-stream (port) pilot signal transmission power (P_p) to the total transmission power, i.e. the first proportion.

[0163] The features of the power allocation scheme described above may also include information indicating uneven power distribution across data streams. For M data streams, when the total power of the M data streams is P_d, the power P_d may be unevenly distributed across the M data streams. For example, the transmission power of the mth data stream is P_d_m, which represents the mth data transmission sub-ratio of the total power of the M data streams, where m is a positive integer between 1 and M. In other words, the transmission power ratio of the mth data stream is the mth data transmission sub-ratio within the second ratio of the total transmission power on the transmission resource.

[0164] In some embodiments, the second ratio may be: 99%, 98%, 95%, 90%, 87.5%, 85%, 83.3%, 80%, 75%, 70%, 67%, 65%, 60%, 55%, 50%, 40%, etc.

[0165] In some embodiments, the first ratio may be: 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, etc.

[0166] In some embodiments, the mth data transmission sub-ratio is: 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, 70%, 80%, etc.

[0167] Taking M as 4 as an example, the characteristics of the above power allocation scheme may include one or more of the following: the proportion of the 4-stream data transmission power (P_d) to the total transmission power is the second proportion, for example, 80%; the proportion of the single-stream (port) pilot signal transmission power (P_p) to the total transmission power is the first proportion, for example, 20%.

[0168] For four data streams, when the total power of the four data streams is P_d, the power of P_d may not be evenly distributed across the four data streams. For example, the transmission power of the mth data stream is P_d_m, which accounts for the mth data transmission sub-ratio of the total power of the M data streams, where m is a positive integer between 1 and 4. In other words, the transmission power ratio of the mth data stream is the mth data transmission sub-ratio within the second ratio of the total transmission power on the transmission resource. For example, the first sub-ratio is 40%, the second sub-ratio is 40%, the third sub-ratio is 10%, and the fourth sub-ratio is 10%. For another example, the first sub-ratio is 40%, the second sub-ratio is 30%, the third sub-ratio is 20%, and the fourth sub-ratio is 10%.

[0169] For a single-stream (port) pilot signal, the total power of the single-stream (port) pilot signal is P_p, and the transmission power ratio of the single-stream (port) pilot signal is 20% of the total transmission power of the transmission resource.

[0170] Taking M as 2 as an example, the characteristics of the above power allocation scheme may include one or more of the following: the proportion of the 2-stream data transmission power (P_d) to the total transmission power is the second proportion, for example, 80%; the proportion of the single-stream (port) pilot transmission power (P_p) to the total transmission power is the first proportion, for example, 20%.

[0171] For two data streams, when the total power of the two data streams is P_d, the power of P_d may not be evenly distributed between the two data streams. For example, the transmission power of the mth data stream is P_d_m, which represents the mth data transmission sub-ratio of the total power of the M data streams, where m is a positive integer between 1 and 2. In other words, the transmission power ratio of the mth data stream is the mth data transmission sub-ratio within the second ratio of the total transmission power on the transmission resource. For example, the first sub-ratio is 60% and the second sub-ratio is 40%. In another example, the first sub-ratio is 75% and the second sub-ratio is 25%.

[0172] For a single-stream (port) pilot signal, the total power of the single-stream (port) pilot signal is P_p, and the transmission power ratio of the single-stream (port) pilot signal is 20% of the total transmission power of the transmission resource.

[0173] Example 3

[0174] Example 3 gives a power allocation scheme for superimposed transmission of M-stream data and N-stream (port) pilot signals, wherein each stream data is evenly distributed among the total transmission power of the M-stream data, and each stream pilot signal is evenly distributed among the total transmission power of the N-stream (port) pilot signals.

[0175] The characteristics of the above power allocation scheme may include the proportion of M-stream data transmission power (P_d) to the total transmission power, i.e. the second proportion, and the proportion of N-stream (port) pilot signal transmission power (P_p) to the total transmission power, i.e. the first proportion.

[0176] The features of the power allocation scheme may also include information indicating the average power distribution among data streams. For M data streams, when the total power of the M data streams is P_d, the M data streams may be evenly distributed with P_d power. For example, if the transmission power of each data stream is P_d / M, the transmission power ratio of each data stream is one-Mth of the second ratio of the total transmission power on the transmission resource.

[0177] The features of the power allocation scheme may also include information indicating the average power distribution among pilot signal streams. For N pilot signal streams (ports), when the total power of the pilot signals of the N pilot signal streams (ports) is P_p, the pilot signals of the N pilot signal streams (ports) may be evenly distributed with P_p power. For example, the transmission power of each pilot signal stream is P_p / N. In other words, the transmission power ratio of each pilot signal stream (port) is one-Nth of the first ratio of the total transmission power on the transmission resource.

[0178] In some embodiments, the first ratio may be: 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, etc.

[0179] In some embodiments, the second ratio may be: 99%, 98%, 95%, 90%, 87.5%, 85%, 83.3%, 80%, 75%, 70%, 67%, 65%, 60%, 55%, 50%, 40%, etc.

[0180] Taking M as 4 and N as 2 as an example, the characteristics of the above power allocation scheme may include one or more of the following: the proportion of the 4-stream data transmission power (P_d) to the total transmission power is the second proportion, for example, 60%; the proportion of the 2-stream (port) pilot signal transmission power (P_p) to the total transmission power is the first proportion, for example, 40%.

[0181] For four data streams, when the total power of the four data streams is P_d, the power of P_d can be evenly distributed among the four data streams. For example, the transmission power of each data stream is P_d / 4, and the transmission power ratio of each data stream is one-fourth of the second ratio of the total transmission power on the transmission resource, for example, one-fourth of 60%, that is, 15%.

[0182] For two-stream (port) pilot signals, when the total power of the two-stream (port) pilot signals is P_p, the two-stream (port) pilot signals can evenly distribute P_p power. For example, the transmission power of each stream pilot signal is P_p / 2. In other words, the transmission power ratio of each stream (port) pilot signal is half of the first ratio of the total transmission power on the transmission resource, for example, half of 40%, that is, the transmission power ratio of each stream (port) pilot signal is 20% of the total transmission power on the transmission resource.

[0183] Taking M as 4 and N as 4 as an example, the characteristics of the above power allocation scheme may include one or more of the following: the proportion of the 4-stream data transmission power (P_d) to the total transmission power is the second proportion, for example, 60%; the proportion of the 4-stream (port) pilot signal transmission power (P_p) to the total transmission power is the first proportion, for example, 40%.

[0184] For four data streams, when the total power of the four data streams is P_d, the power of P_d can be evenly distributed among the four data streams. For example, the transmission power of each data stream is P_d / 4, and the transmission power ratio of each data stream is one-fourth of the second ratio of the total transmission power on the transmission resource, that is, one-fourth of 60%, that is, 15%.

[0185] For four-stream (port) pilot signals, when the total power of the four-stream (port) pilot signals is P_p, the four-stream (port) pilot signals can evenly distribute the power of P_p. For example, the transmission power of each stream pilot signal is P_p / 4. In other words, the transmission power ratio of each stream (port) pilot signal is one-fourth of the first ratio of the total transmission power on the transmission resource, for example, one-fourth of 40%, that is, the transmission power ratio of each stream (port) pilot signal is 10% of the total transmission power on the transmission resource.

[0186] Example 4

[0187] Example 4 gives a power allocation scheme for superimposed transmission of M-stream data and N-stream (port) pilot signals, wherein each stream data is unevenly distributed among the total transmission power of the M-stream data, and each stream pilot signal is evenly distributed among the total transmission power of the N-stream (port) pilot signals.

[0188] The characteristics of the above power allocation scheme may include the proportion of M-stream data transmission power (P_d) to the total transmission power, i.e. the second proportion, and the proportion of N-stream (port) pilot signal transmission power (P_p) to the total transmission power, i.e. the first proportion.

[0189] The features of the power allocation scheme described above may also include information indicating uneven power distribution across data streams. For M data streams, when the total power of the M data streams is P_d, the power P_d may be unevenly distributed across the M data streams. For example, the transmission power of the mth data stream is P_d_m, which represents the mth data transmission sub-ratio of the total power of the M data streams, where m is a positive integer between 1 and M. In other words, the transmission power ratio of the mth data stream is the mth data transmission sub-ratio within the second ratio of the total transmission power on the transmission resource.

[0190] The features of the power allocation scheme may also include information indicating the average power distribution among pilot signal streams. For N pilot signal streams (ports), when the total power of the pilot signals of the N pilot signal streams (ports) is P_p, the pilot signals of the N pilot signal streams (ports) may be evenly distributed with P_p power. For example, the transmission power of each pilot signal stream is P_p / N. In other words, the transmission power ratio of each pilot signal stream (port) is one-Nth of the first ratio of the total transmission power on the transmission resource.

[0191] In some embodiments, the first ratio may be: 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, etc.

[0192] In some embodiments, the second ratio may be: 99%, 98%, 95%, 90%, 87.5%, 85%, 83.3%, 80%, 75%, 70%, 67%, 65%, 60%, 55%, 50%, 40%, etc.

[0193] In some embodiments, the mth data transmission sub-ratio is: 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, 70%, 80%, etc.

[0194] Taking M as 4 and N as 2 as an example, the characteristics of the above power allocation scheme may include one or more of the following: the proportion of the 4-stream data transmission power (P_d) to the total transmission power is the second proportion, for example, 60%; the proportion of the 2-stream (port) pilot signal transmission power (P_p) to the total transmission power is the first proportion, for example, 40%.

[0195] For four data streams, when the total power of the four data streams is P_d, the power of P_d may not be evenly distributed across the four data streams. For example, the transmission power of the mth data stream is P_d_m, which accounts for the mth data transmission sub-ratio of the total power of the M data streams, where m is a positive integer between 1 and 4. In other words, the transmission power ratio of the mth data stream is the mth data transmission sub-ratio within the second ratio of the total transmission power on the transmission resource. For example, the first sub-ratio is 40%, the second sub-ratio is 40%, the third sub-ratio is 10%, and the fourth sub-ratio is 10%. For another example, the first sub-ratio is 40%, the second sub-ratio is 30%, the third sub-ratio is 20%, and the fourth sub-ratio is 10%.

[0196] For two-stream (port) pilot signals, when the total power of the two-stream (port) pilot signals is P_p, the two-stream (port) pilot signals can evenly distribute P_p power. For example, the transmission power of each stream pilot signal is P_p / 2. In other words, the transmission power ratio of each stream (port) pilot signal is half of the first ratio of the total transmission power on the transmission resource, for example, half of 40%, that is, the transmission power ratio of each stream (port) pilot signal is 20% of the total transmission power on the transmission resource.

[0197] Taking M as 4 and N as 4 as an example, the characteristics of the above power allocation scheme may include one or more of the following: the proportion of the 4-stream data transmission power (P_d) to the total transmission power is the second proportion, for example, 60%; the proportion of the 4-stream (port) pilot signal transmission power (P_p) to the total transmission power is the first proportion, for example, 40%.

[0198] For four data streams, when the total power of the four data streams is P_d, the power of P_d may not be evenly distributed across the four data streams. For example, the transmission power of the mth data stream is P_d_m, which accounts for the mth data transmission sub-ratio of the total power of the M data streams, where m is a positive integer between 1 and 4. In other words, the transmission power ratio of the mth data stream is the mth data transmission sub-ratio within the second ratio of the total transmission power on the transmission resource. For example, the first sub-ratio is 40%, the second sub-ratio is 40%, the third sub-ratio is 10%, and the fourth sub-ratio is 10%. For another example, the first sub-ratio is 40%, the second sub-ratio is 30%, the third sub-ratio is 20%, and the fourth sub-ratio is 10%.

[0199] For four-stream (port) pilot signals, when the total power of the four-stream (port) pilot signals is P_p, the four-stream (port) pilot signals can evenly distribute the power of P_p. For example, the transmission power of each stream pilot signal is P_p / 4. In other words, the transmission power ratio of each stream (port) pilot signal is one-fourth of the first ratio of the total transmission power on the transmission resource, for example, one-fourth of 40%, that is, the transmission power ratio of each stream (port) pilot signal is 10% of the total transmission power on the transmission resource.

[0200] Example 5

[0201] Example 5 gives a power allocation scheme for superimposed transmission of M-stream data and N-stream (port) pilot signals, wherein each stream data is evenly distributed with the total transmission power of the M-stream data, and each stream pilot signal is unevenly distributed with the total transmission power of the N-stream (port) pilot signals.

[0202] The characteristics of the above power allocation scheme may include the proportion of M-stream data transmission power (P_d) to the total transmission power, i.e. the second proportion, and the proportion of N-stream (port) pilot signal transmission power (P_p) to the total transmission power, i.e. the first proportion.

[0203] The features of the power allocation scheme may also include information indicating the average power distribution among data streams. For M data streams, when the total power of the M data streams is P_d, the M data streams may be evenly distributed with P_d power. For example, if the transmission power of each data stream is P_d / M, the transmission power ratio of each data stream is one-Mth of the second ratio of the total transmission power on the transmission resource.

[0204] The features of the power allocation scheme may also include information indicating that the pilot signal streams distribute power unevenly. For N streams (ports) of pilot signals, when the total power of the N streams (ports) of pilot signals is P_p, the N streams (ports) of pilot signals may distribute P_p power unevenly. For example, the transmission power of the nth stream (port) pilot signal is P_p_n, which is the nth pilot transmission sub-proportion of the total power of the N streams (ports), where n is a positive integer between 1 and N. In other words, the transmission power ratio of the nth stream (port) pilot signal is the nth pilot transmission sub-proportion of the first ratio of the total transmission power on the transmission resource.

[0205] In some embodiments, the first ratio may be: 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, etc.

[0206] In some embodiments, the second ratio may be: 99%, 98%, 95%, 90%, 87.5%, 85%, 83.3%, 80%, 75%, 70%, 67%, 65%, 60%, 55%, 50%, 40%, etc.

[0207] In some embodiments, the nth pilot transmission sub-ratio is: 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, 70%, 80%, etc.

[0208] Taking M as 4 and N as 2 as an example, the characteristics of the above power allocation scheme may include one or more of the following: the proportion of the 4-stream data transmission power (P_d) to the total transmission power is the second proportion, for example, 60%; the proportion of the 2-stream (port) pilot signal transmission power (P_p) to the total transmission power is the first proportion, for example, 40%.

[0209] For four data streams, when the total power of the four data streams is P_d, the power of P_d can be evenly distributed among the four data streams. For example, the transmission power of each data stream is P_d / 4, and the transmission power ratio of each data stream is one-fourth of the second ratio of the total transmission power on the transmission resource, for example, one-fourth of 60%, that is, 15%.

[0210] For two-stream (port) pilot signals, when the total power of the two-stream (port) pilot signals is P_p, the two-stream (port) pilot signals may not evenly distribute the P_p power. For example, the transmission power of the n-th stream (port) pilot signal is P_p_n, which accounts for the n-th pilot transmission sub-proportion of the total power of the N-stream (port) pilot signals, where n is 1 or 2. In other words, the transmission power ratio of the n-th stream (port) pilot signal is the n-th pilot transmission sub-proportion of the first ratio of the total transmission power on the transmission resource. For example, the first sub-proportion is 60% and the second sub-proportion is 40%. Or, for example, the first sub-proportion is 80% and the second sub-proportion is 20%.

[0211] Taking M as 4 and N as 4 as an example, the characteristics of the above power allocation scheme may include one or more of the following: the proportion of the 4-stream data transmission power (P_d) to the total transmission power is the second proportion, for example, 60%; the proportion of the 4-stream (port) pilot signal transmission power (P_p) to the total transmission power is the first proportion, for example, 40%.

[0212] For four data streams, when the total power of the four data streams is P_d, the power of P_d can be evenly distributed among the four data streams. For example, the transmission power of each data stream is P_d / 4, and the transmission power ratio of each data stream is one-fourth of the second ratio of the total transmission power on the transmission resource, that is, one-fourth of 60%, that is, 15%.

[0213] For a 4-stream (port) pilot signal, when the total power of the 4-stream (port) pilot signal is P_p, the 4-stream (port) pilot signal may not distribute the P_p power evenly. For example, the transmission power of the n-th stream (port) pilot signal is P_p_n, which is the n-th pilot transmission sub-proportion of the total power of the N-stream (port) pilot signal, where n is 1, 2, 3, or 4. In other words, the transmission power ratio of the n-th stream (port) pilot signal is the n-th pilot transmission sub-proportion in the first ratio of the total transmission power on the transmission resource. For example, the first sub-proportion is 40%, the second sub-proportion is 40%, the third sub-proportion is 10%, and the fourth sub-proportion is 10%. Or, for example, the first sub-proportion is 40%, the second sub-proportion is 30%, the third sub-proportion is 20%, and the fourth sub-proportion is 10%.

[0214] Example 6

[0215] Example 6 gives a power allocation scheme for superimposed transmission of M-stream data and N-stream (port) pilot signals, wherein the total transmission power of the M-stream data is unevenly distributed to each stream data, and the total transmission power of the N-stream (port) pilot signals is unevenly distributed to each stream pilot signal.

[0216] The characteristics of the above power allocation scheme may include the proportion of M-stream data transmission power (P_d) to the total transmission power, i.e. the second proportion, and the proportion of N-stream (port) pilot signal transmission power (P_p) to the total transmission power, i.e. the first proportion.

[0217] The features of the power allocation scheme described above may also include information indicating uneven power distribution across data streams. For M data streams, when the total power of the M data streams is P_d, the power P_d may be unevenly distributed across the M data streams. For example, the transmission power of the mth data stream is P_d_m, which represents the mth data transmission sub-ratio of the total power of the M data streams, where m is a positive integer between 1 and M. In other words, the transmission power ratio of the mth data stream is the mth data transmission sub-ratio within the second ratio of the total transmission power on the transmission resource.

[0218] The features of the power allocation scheme may also include information indicating that the pilot signal streams distribute power unevenly. For N streams (ports) of pilot signals, when the total power of the N streams (ports) of pilot signals is P_p, the N streams (ports) of pilot signals may distribute P_p power unevenly. For example, the transmission power of the nth stream (port) pilot signal is P_p_n, which is the nth pilot transmission sub-proportion of the total power of the N streams (ports), where n is a positive integer between 1 and N. In other words, the transmission power ratio of the nth stream (port) pilot signal is the nth pilot transmission sub-proportion of the first ratio of the total transmission power on the transmission resource.

[0219] In some embodiments, the first ratio may be: 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, etc.

[0220] In some embodiments, the second ratio may be: 99%, 98%, 95%, 90%, 87.5%, 85%, 83.3%, 80%, 75%, 70%, 67%, 65%, 60%, 55%, 50%, 40%, etc.

[0221] In some embodiments, the mth data transmission sub-ratio is: 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, 70%, 80%, etc.

[0222] In some embodiments, the nth pilot transmission sub-ratio is: 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, 70%, 80%, etc.

[0223] Taking M as 4 and N as 2 as an example, the characteristics of the above power allocation scheme may include one or more of the following: the proportion of the 4-stream data transmission power (P_d) to the total transmission power is the second proportion, for example, 60%; the proportion of the 2-stream (port) pilot signal transmission power (P_p) to the total transmission power is the first proportion, for example, 40%.

[0224] For four data streams, when the total power of the four data streams is P_d, the power of P_d may not be evenly distributed across the four data streams. For example, the transmission power of the mth data stream is P_d_m, which accounts for the mth data transmission sub-ratio of the total power of the M data streams, where m is a positive integer between 1 and 4. In other words, the transmission power ratio of the mth data stream is the mth data transmission sub-ratio within the second ratio of the total transmission power on the transmission resource. For example, the first sub-ratio is 40%, the second sub-ratio is 40%, the third sub-ratio is 10%, and the fourth sub-ratio is 10%. For another example, the first sub-ratio is 40%, the second sub-ratio is 30%, the third sub-ratio is 20%, and the fourth sub-ratio is 10%.

[0225] For two-stream (port) pilot signals, when the total power of the two-stream (port) pilot signals is P_p, the two-stream (port) pilot signals may not evenly distribute the P_p power. For example, the transmission power of the n-th stream (port) pilot signal is P_p_n, which accounts for the n-th pilot transmission sub-proportion of the total power of the N-stream (port) pilot signals, where n is 1 or 2. In other words, the transmission power ratio of the n-th stream (port) pilot signal is the n-th pilot transmission sub-proportion of the first ratio of the total transmission power on the transmission resource. For example, the first sub-proportion is 60% and the second sub-proportion is 40%. Or, for example, the first sub-proportion is 80% and the second sub-proportion is 20%.

[0226] Taking M as 4 and N as 4 as an example, the characteristics of the above power allocation scheme may include one or more of the following: the proportion of the 4-stream data transmission power (P_d) to the total transmission power is the second proportion, for example, 60%; the proportion of the 4-stream (port) pilot signal transmission power (P_p) to the total transmission power is the first proportion, for example, 40%.

[0227] For four data streams, when the total power of the four data streams is P_d, the power of P_d may not be evenly distributed across the four data streams. For example, the transmission power of the mth data stream is P_d_m, which accounts for the mth data transmission sub-ratio of the total power of the M data streams, where m is a positive integer between 1 and 4. In other words, the transmission power ratio of the mth data stream is the mth data transmission sub-ratio within the second ratio of the total transmission power on the transmission resource. For example, the first sub-ratio is 40%, the second sub-ratio is 40%, the third sub-ratio is 10%, and the fourth sub-ratio is 10%. For another example, the first sub-ratio is 40%, the second sub-ratio is 30%, the third sub-ratio is 20%, and the fourth sub-ratio is 10%.

[0228] For a 4-stream (port) pilot signal, when the total power of the 4-stream (port) pilot signal is P_p, the 4-stream (port) pilot signal may not distribute the P_p power evenly. For example, the transmission power of the n-th stream (port) pilot signal is P_p_n, which is the n-th pilot transmission sub-proportion of the total power of the N-stream (port) pilot signal, where n is 1, 2, 3, or 4. In other words, the transmission power ratio of the n-th stream (port) pilot signal is the n-th pilot transmission sub-proportion in the first ratio of the total transmission power on the transmission resource. For example, the first sub-proportion is 40%, the second sub-proportion is 40%, the third sub-proportion is 10%, and the fourth sub-proportion is 10%. Or, for example, the first sub-proportion is 40%, the second sub-proportion is 30%, the third sub-proportion is 20%, and the fourth sub-proportion is 10%.

[0229] Example 2

[0230] In Example 2, the transmission method of multi-stream pilot signals, such as the relationship between multi-stream pilot signals and transmission resources, is described by taking the case where L stream (port) pilot signals need to be superimposed with data for transmission. In this embodiment of the present application, at least some pilot signals in the L stream pilot signals occupy different time domain resources.

[0231] In some embodiments, L streams (ports) of pilot signals can be divided into K groups, each group including N streams (ports) of pilot signals. The K groups of pilot signals are transmitted on different time domain resources, such as different time domain symbols. For the pilot signals within each group, the power allocation method for data and pilot signals on their transmission resources can adopt any of the power allocation schemes mentioned above.

[0232] Taking the example of transmitting four data streams and four pilot signals (ports), the four pilot signals are divided into four groups, each group including one pilot signal (port). These four pilot signal groups are transmitted on different time domain resources, such as different time domain symbols. For example, the first pilot signal group is transmitted on the first data symbol (set), the second pilot signal group is transmitted on the second data symbol (set), the third pilot signal group is transmitted on the third data symbol (set), and the fourth pilot signal group is transmitted on the fourth data symbol (set), as shown in Figure 9.

[0233] Taking the example of transmitting four data streams and four pilot signal streams (ports), the four pilot signal streams (ports) are divided into two groups, each group including two pilot signal streams (ports). These two pilot signal groups are transmitted on different time domain resources, such as different time domain symbols. For example, the first pilot signal group is transmitted on the first data symbol (set), and the second pilot signal group is transmitted on the second data symbol (set), as shown in Figure 10.

[0234] In some embodiments, L streams (ports) of pilot signals can be divided into K groups, each group including N streams (ports) of pilot signals. These K groups of pilot signals are transmitted on different frequency domain resources, such as on different subcarriers (subcarrier sets), or different groups of pilot signals are transmitted on different RBs (RB groups). For the pilot signals within each group, the power allocation method for data and pilot signals on its transmission resources can adopt any of the power allocation schemes mentioned above.

[0235] Taking the transmission of four data streams and four pilot signals (ports) as an example, the four pilot signals (ports) are divided into four groups, each group including one pilot signal (port). The four pilot signal groups are transmitted on different frequency domain resources, such as different subcarriers. For example, the first pilot signal group is transmitted on the first subcarrier (set), the second pilot signal group is transmitted on the second subcarrier (set), the third pilot signal group is transmitted on the third subcarrier (set), and the fourth pilot signal group is transmitted on the fourth subcarrier (set), as shown in Figure 11.

[0236] Taking the example of a scenario where four data streams and four pilot signal streams (ports) need to be transmitted, the four pilot signal streams (ports) are divided into two groups, each group including two pilot signal streams (ports). These two pilot signal groups are transmitted on different frequency domain resources, such as different subcarriers. For example, the first pilot signal group is transmitted on the first subcarrier (set), and the second pilot signal group is transmitted on the second subcarrier (set), as shown in Figure 12.

[0237] In some embodiments, L stream (port) pilot signals can be divided into K groups, each group including N stream (port) pilot signals. The above K groups of pilot signals are transmitted on different time domain and frequency domain resources, such as K groups of different time domain and frequency domain resources. For example, different groups of pilot signals are transmitted on different time domain symbols and subcarriers (subcarrier sets), or different groups of pilot signals are transmitted on different time domain symbols and RBs (RB groups). For the pilot signals within each group, the power allocation method for data and pilot signals on their transmission resources can adopt any of the power allocation schemes mentioned above.

[0238] Taking the transmission of four streams of data and four streams (ports) of pilot signals as an example, the four streams (ports) of pilot signals are divided into four groups, each group including one stream (port) of pilot signals. The above four groups of pilot signals are transmitted on different time-domain and frequency-domain resources, such as on different subcarriers and different symbols. For example, the first group of pilot signals is transmitted on the first symbol and subcarrier (set), the second group of pilot signals is transmitted on the second symbol and subcarrier (set), the third group of pilot signals is transmitted on the third symbol and subcarrier (set), and the fourth group of pilot signals is transmitted on the fourth symbol and subcarrier (set), as shown in Figure 13.

[0239] Taking the transmission of four data streams and four pilot signals (ports) as an example, the four pilot signals (ports) are divided into two groups, each group including two pilot signals (ports). These two groups of pilot signals are transmitted on different time and frequency domain resources, such as different subcarriers and different symbols. For example, the first group of pilot signals is transmitted on the first symbol and subcarrier (set), and the second group of pilot signals is transmitted on the second symbol and subcarrier (set), as shown in Figure 14.

[0240] Interference between data streams, mutual interference between pilot ports, and mutual interference between data and pilots will greatly increase the complexity of superimposed transmission and reception of multi-stream (port) reference signals and multi-stream data. Based on the applicant's research and experimental results, higher pilot power and higher data transmission power can alleviate the above problems and achieve better reception effects at the receiving end. However, due to the limitation of the total transmission power on specific transmission resources in wireless communication systems, it is necessary to consider how to make a power allocation scheme after superimposed transmission of multi-stream (port) reference signals and multi-stream data within a limited power range.

[0241] In an embodiment of the present application, the number of data streams and the number of reference signal streams (number of ports) on a specific transmission resource may be different. For example, the sum of the number of data streams and the number of reference signal streams (number of ports) on a specific transmission resource may be lower than the sum of the number of data streams to be transmitted and the number of reference signal streams (number of ports) to be transmitted. In other words, different reference signal streams (ports) can be transmitted on different transmission resources. In this way, interference between pilot signals and interference between pilot signals and data can be reduced. At the same time, more power can be allocated to data transmission and pilot transmission on a specific transmission resource, thereby ensuring that the pilot transmission power of each stream is maximized in the multi-stream pilot signal and data superposition transmission scheme, and also ensuring that the data transmission power of each stream is not lost too much due to the superposition transmission of the pilot, thereby ensuring the performance of the multi-stream superposition pilot design and the system gain.

[0242] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 14 . The device embodiment of the present application is described in detail below in conjunction with Figures 15 to 17 . It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for portions not described in detail, reference can be made to the above method embodiment.

[0243] FIG15 is a schematic diagram of a wireless communication device according to an embodiment of the present application, where the device 1500 may be the first device described above.

[0244] 15 , the device 500 may include a first transmission unit 1510 .

[0245] The first transmission unit 1510 is configured to transmit a multi-stream pilot signal, wherein pilot signals of different streams in the multi-stream pilot signal occupy different portions or all of transmission resources, and the transmission resources occupied by the pilot signal are portions or all of the transmission resources occupied by transmitted data.

[0246] In some embodiments, pilot signals of different streams in the multi-stream pilot signal occupy different parts or all of the time domain transmission resources and / or different frequency domain transmission resources.

[0247] In some embodiments, the multi-stream pilot signal includes a first group of pilot signals, and the transmission resources occupied by the first group of pilot signals are the same. The first transmission unit is used to: transmit the first group of pilot signals based on a first ratio, and the first ratio is the ratio of the transmission power of the first group of pilot signals to the total transmission power corresponding to the transmission resources occupied by the first group of pilot signals.

[0248] In some embodiments, the first group of pilot signals includes a-stream pilot signals, and the transmission power of each stream pilot signal in the a-stream pilot signals is one a-th of the total transmission power of the first group of pilot signals, where a is a positive integer greater than or equal to 1.

[0249] In some embodiments, the first group of pilot signals includes a first stream pilot signal and a second stream pilot signal, and the first transmission unit is configured to: transmit the first stream pilot signal based on a first sub-ratio, where the first sub-ratio is a ratio of the transmission power of the first stream pilot signal to the total transmission power of the first group of pilot signals; and transmit the second stream pilot signal based on a second sub-ratio, where the second sub-ratio is a ratio of the transmission power of the second stream pilot signal to the total transmission power of the first group of pilot signals.

[0250] In some embodiments, the first ratio is one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50% and 60%.

[0251] In some embodiments, the transmitted data includes multi-stream data, and the transmission resources occupied by the multi-stream pilot signal are the transmission resources occupied by the multi-stream data. The device also includes: a second transmission unit, used to transmit the multi-stream data based on a second ratio, and the second ratio is the ratio of the transmission power of the multi-stream data to the total transmission power corresponding to the transmission resources occupied by the multi-stream pilot signal.

[0252] In some embodiments, the multi-stream data is n-stream data, and the transmission power of each stream data in the n-stream data is one-nth of the total transmission power of the multi-stream data, where b is a positive integer greater than or equal to 1.

[0253] In some embodiments, the multi-stream data includes first stream data and second stream data, and the second transmission unit is used to: transmit the first stream data based on a third sub-ratio, where the third sub-ratio is the ratio of the transmission power of the first stream data to the total transmission power of the multi-stream data; and transmit the second stream data based on a fourth sub-ratio, where the fourth sub-ratio is the ratio of the transmission power of the second stream data to the total transmission power of the multi-stream data.

[0254] In some embodiments, the second ratio is one of 99%, 98%, 95%, 90%, 87.5%, 85%, 83.3%, 80%, 75%, 70%, 67%, 65%, 60%, 55%, 50%, and 40%.

[0255] In some embodiments, the first sub-ratio, the second sub-ratio, the third sub-ratio and the fourth sub-ratio are respectively one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, 70%, and 80%.

[0256] In some embodiments, the device further includes: an acquiring unit, configured to acquire first configuration information, where the first configuration information is used to configure a transmission mode of the multi-stream pilot signal and / or a transmission mode of the transmission data.

[0257] In some embodiments, the transmission mode of the multi-stream pilot signal includes an association between the multi-stream pilot signal and a transmission resource, and / or a transmission power of the multi-stream pilot signal.

[0258] In some embodiments, the multi-stream pilot signal includes a first group of pilot signals, and the transmission data includes multi-stream data. If a first resource unit is used to transmit the first group of pilot signals and the multi-stream data, the first configuration information is used to configure the transmission power of the first group of pilot signals and the transmission power of the multi-stream data in the first resource unit.

[0259] In some embodiments, the multi-stream pilot signal includes a first group of pilot signals, the transmission data includes multi-stream data, and the first configuration information is used to indicate one or more of the following: the number of pilot signal groups included in the multi-stream pilot signal; the number of pilot streams included in each pilot signal group in the pilot signal group; the total transmission power of each pilot signal group; the transmission power of each stream pilot signal in the pilot signal group; the number of data streams included in the multi-stream data; the total transmission power of the multi-stream data and the first group of pilot signals; the total transmission power of the multi-stream data; the transmission power of each stream data in the multi-stream data; a first identifier for indicating the power allocation scheme adopted by the transmission data and / or the multi-stream pilot signal; and a second identifier for indicating the transmission resource allocation scheme of the multi-stream pilot signal; wherein the transmission resources occupied by each pilot signal group are the same, and the transmission resources occupied by the first group of pilot signals are the transmission resources occupied by the multi-stream data.

[0260] In some embodiments, the device further includes: a sending unit, configured to send capability information to the second device, wherein the capability information is used to indicate a transmission mode of the multi-stream pilot signal and / or a transmission mode of the transmission data supported by the first device.

[0261] In some embodiments, the capability information is carried by one or more of the following: radio resource control RRC message; uplink control information UCI message; uplink message during random access; physical uplink control channel PUCCH; physical uplink shared channel PUSCH; and uplink channel dedicated to artificial intelligence.

[0262] In some embodiments, the first configuration information is carried by one or more of the following: a broadcast message; a downlink message during a random access process; a physical downlink control channel PDCCH; a physical downlink shared channel PDSCH; and a downlink channel dedicated to artificial intelligence.

[0263] In some embodiments, the first device is a terminal device and the second device is a network device.

[0264] FIG16 is a schematic diagram of another wireless communication device according to an embodiment of the present application, where the device 1600 may be the second device described above.

[0265] 16 , a device 1600 may include a first transmission unit 1610 .

[0266] The first transmission unit 1610 is configured to transmit a multi-stream pilot signal, wherein pilot signals of different streams in the multi-stream pilot signal occupy different portions or all of transmission resources, and the transmission resources occupied by the pilot signal are portions or all of the transmission resources occupied by transmitted data.

[0267] In some embodiments, pilot signals of different streams in the multi-stream pilot signal occupy different parts or all of the time domain transmission resources and / or different frequency domain transmission resources.

[0268] In some embodiments, the multi-stream pilot signal includes a first group of pilot signals, and the transmission resources occupied by the first group of pilot signals are the same. The first transmission unit is used to: transmit the first group of pilot signals based on a first ratio, and the first ratio is the ratio of the transmission power of the first group of pilot signals to the total transmission power corresponding to the transmission resources occupied by the first group of pilot signals.

[0269] In some embodiments, the first group of pilot signals includes a-stream pilot signals, and the transmission power of each stream pilot signal in the a-stream pilot signals is one a-th of the total transmission power of the first group of pilot signals, where a is a positive integer greater than or equal to 1.

[0270] In some embodiments, the first group of pilot signals includes a first stream pilot signal and a second stream pilot signal, and the first transmission unit is configured to: transmit the first stream pilot signal based on a first sub-ratio, where the first sub-ratio is a ratio of the transmission power of the first stream pilot signal to the total transmission power of the first group of pilot signals; and transmit the second stream pilot signal based on a second sub-ratio, where the second sub-ratio is a ratio of the transmission power of the second stream pilot signal to the total transmission power of the first group of pilot signals.

[0271] In some embodiments, the first ratio is one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50% and 60%.

[0272] In some embodiments, the transmitted data includes multi-stream data, and the transmission resources occupied by the multi-stream pilot signal are the transmission resources occupied by the multi-stream data. The device also includes: a second transmission unit, used to transmit the multi-stream data based on a second ratio, and the second ratio is the ratio of the transmission power of the multi-stream data to the total transmission power corresponding to the transmission resources occupied by the multi-stream pilot signal.

[0273] In some embodiments, the multi-stream data is b-stream data, and the transmission power of each stream data in the b-stream data is one b-th of the total transmission power of the multi-stream data, where b is a positive integer greater than or equal to 1.

[0274] In some embodiments, the multi-stream data includes first stream data and second stream data, and the second transmission unit is used to: transmit the first stream data based on a third sub-ratio, where the third sub-ratio is the ratio of the transmission power of the first stream data to the total transmission power of the multi-stream data; and transmit the second stream data based on a fourth sub-ratio, where the fourth sub-ratio is the ratio of the transmission power of the second stream data to the total transmission power of the multi-stream data.

[0275] In some embodiments, the second ratio is one of 99%, 98%, 95%, 90%, 87.5%, 85%, 83.3%, 80%, 75%, 70%, 67%, 65%, 60%, 55%, 50%, and 40%.

[0276] In some embodiments, the first sub-ratio, the second sub-ratio, the third sub-ratio and the fourth sub-ratio are respectively one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, 70%, and 80%.

[0277] In some embodiments, the device further includes: an acquiring unit, configured to acquire first configuration information, where the first configuration information is used to configure a transmission mode of the multi-stream pilot signal and / or a transmission mode of the transmission data.

[0278] In some embodiments, the transmission mode of the multi-stream pilot signal includes an association between the multi-stream pilot signal and a transmission resource, and / or a transmission power of the multi-stream pilot signal.

[0279] In some embodiments, the multi-stream pilot signal includes a first group of pilot signals, and the transmission data includes multi-stream data. If a first resource unit is used to transmit the first group of pilot signals and the multi-stream data, the first configuration information is used to configure the transmission power of the first group of pilot signals and the transmission power of the multi-stream data in the first resource unit.

[0280] In some embodiments, the multi-stream pilot signal includes a first group of pilot signals, the transmission data includes multi-stream data, and the first configuration information is used to indicate one or more of the following: the number of pilot signal groups included in the multi-stream pilot signal; the number of pilot streams included in each pilot signal group in the pilot signal group; the total transmission power of each pilot signal group; the transmission power of each stream pilot signal in the pilot signal group; the number of data streams included in the multi-stream data; the total transmission power of the multi-stream data and the first group of pilot signals; the total transmission power of the multi-stream data; the transmission power of each stream data in the multi-stream data; a first identifier for indicating the power allocation scheme adopted by the transmission data and / or the multi-stream pilot signal; and a second identifier for indicating the transmission resource allocation scheme of the multi-stream pilot signal; wherein the transmission resources occupied by each pilot signal group are the same, and the transmission resources occupied by the first group of pilot signals are the transmission resources occupied by the multi-stream data.

[0281] In some embodiments, the device further includes: a sending unit, configured to send capability information to the first device, wherein the capability information is used to indicate a transmission mode of the multi-stream pilot signal and / or a transmission mode of the transmission data supported by the second device.

[0282] In some embodiments, the capability information is carried by one or more of the following: radio resource control RRC message; uplink control information UCI message; uplink message during random access; physical uplink control channel PUCCH; physical uplink shared channel PUSCH; and uplink channel dedicated to artificial intelligence.

[0283] In some embodiments, the first configuration information is carried by one or more of the following: a broadcast message; a downlink message during a random access process; a physical downlink control channel PDCCH; a physical downlink shared channel PDSCH; and a downlink channel dedicated to artificial intelligence.

[0284] In some embodiments, the first device is a terminal device and the second device is a network device.

[0285] In an optional embodiment, the transmission unit, sending unit, and acquisition unit mentioned above may be a transceiver 1730, and the wireless communication device 1500 and the wireless communication device 1600 may further include a processor 1710 and a memory 1720, as specifically shown in FIG17 .

[0286] Figure 17 is a schematic block diagram of a communication device according to an embodiment of the present application. The dashed lines in Figure 17 indicate that the unit or module is optional. Apparatus 1700 may be used to implement the method described in the above method embodiment. Apparatus 1700 may be a chip, a first device, or a second device.

[0287] The device 1700 may include one or more processors 1710. The processor 1710 may support the device 1700 to implement the method described in the method embodiment above. The processor 1710 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0288] The apparatus 1700 may further include one or more memories 1720. The memories 1720 store programs that can be executed by the processor 1710, causing the processor 1710 to perform the methods described in the above method embodiments. The memories 1720 may be independent of the processor 1710 or integrated into the processor 1710.

[0289] The apparatus 1700 may further include a transceiver 1730. The processor 1710 may communicate with other devices or chips via the transceiver 1730. For example, the processor 1710 may transmit and receive data with other devices or chips via the transceiver 1730.

[0290] The present invention also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to the first device or the second device provided in the present invention, and the program enables a computer to execute the method performed by the wireless communication device in each embodiment of the present invention.

[0291] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the first device or the second device provided in the present application, and the program causes a computer to execute the method performed by the wireless communication device in each embodiment of the present application.

[0292] The embodiments of the present application also provide a computer program. The computer program can be applied to the wireless communication device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the wireless communication device in each embodiment of the present application.

[0293] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first", "second", "third", and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0294] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0295] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0296] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0297] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0298] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0299] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0300] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0301] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0302] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0303] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0304] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0305] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that, Including: A first device transmits a multi-stream pilot signal, wherein the pilot signals of different streams in the multi-stream pilot signal occupy different partial or all transmission resources, and the transmission resources occupied by the pilot signal are partial or all transmission resources occupied by transmission data.

2. The method according to claim 1, characterized in that, The pilot signals of different streams in the multi-stream pilot signal occupy different partial or all time-domain transmission resources and / or different frequency-domain transmission resources.

3. The method according to claim 1 or 2, characterized in that, The multi-stream pilot signal includes a first group of pilot signals, and the transmission resources occupied by the first group of pilot signals are the same. The first device transmits the multi-stream pilot signal, including: The first device transmits the first group of pilot signals based on a first ratio, where the first ratio is the ratio of the transmission power of the first group of pilot signals to the total transmission power corresponding to the transmission resources occupied by the first group of pilot signals.

4. The method according to claim 3, characterized in that, The first group of pilot signals includes pilot signals of a streams, and the transmission power of each stream of pilot signals in the pilot signals of a streams is one / a of the total transmission power of the first group of pilot signals, where a is a positive integer greater than or equal to 1.

5. The method according to claim 3, characterized in that, The first group of pilot signals includes a first-stream pilot signal and a second-stream pilot signal. The first device transmits the first group of pilot signals based on a first ratio, including: The first device transmits the first-stream pilot signal based on a first sub-ratio, where the first sub-ratio is the ratio of the transmission power of the first-stream pilot signal to the total transmission power of the first group of pilot signals; The first device transmits the second-stream pilot signal based on a second sub-ratio, where the second sub-ratio is the ratio of the transmission power of the second-stream pilot signal to the total transmission power of the first group of pilot signals.

6. The method according to any one of claims 3 - 5, characterized in that, The first ratio is one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, and 60%.

7. The method according to any one of claims 1 - 6, characterized in that, The transmission data includes multi-stream data, and the transmission resources occupied by the multi-stream pilot signal are the transmission resources occupied by the multi-stream data. The method further includes: The first device transmits the multi-stream data based on a second ratio, where the second ratio is the ratio of the transmission power of the multi-stream data to the total transmission power corresponding to the transmission resources occupied by the multi-stream pilot signal.

8. The method according to claim 7, characterized in that, The multi-stream data is b-stream data, and the transmission power of each stream of data in the b-stream data is one / b of the total transmission power of the multi-stream data, where b is a positive integer greater than or equal to 1.

9. The method according to claim 7, characterized in that, The multi-stream data includes a first-stream data and a second-stream data. The first device transmits the multi-stream data based on a second ratio, including: The first device transmits the first-stream data based on a third sub-ratio, where the third sub-ratio is the ratio of the transmission power of the first-stream data to the total transmission power of the multi-stream data; The first device transmits the second-stream data based on a fourth sub-ratio, where the fourth sub-ratio is the ratio of the transmission power of the second-stream data to the total transmission power of the multi-stream data.

10. The method according to any one of claims 7 - 9, characterized in that, The second ratio is one of 99%, 98%, 95%, 90%, 87.5%, 85%, 83.3%, 80%, 75%, 70%, 67%, 65%, 60%, 55%, 50%, 40%.

11. The method according to claim 5 or 9, characterized in that, The first sub-ratio, the second sub-ratio, the third sub-ratio, and the fourth sub-ratio are each one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, 70%, 80%.

12. The method according to any one of claims 1 - 11, characterized in that, The method further includes: The first device obtains first configuration information for configuring the transmission mode of the multi-stream pilot signal and / or the transmission mode of the transmission data.

13. The method according to claim 12, characterized in that, The transmission mode of the multi-stream pilot signal includes the association relationship between the multi-stream pilot signal and the transmission resource and / or the transmission power of the multi-stream pilot signal.

14. The method according to claim 12 or 13, characterized in that, The multi-stream pilot signal includes a first group of pilot signals, and the transmission data includes multi-stream data. If a first resource unit is used to transmit the first group of pilot signals and the multi-stream data, the first configuration information is used to configure the transmission power of the first group of pilot signals and the transmission power of the multi-stream data in the first resource unit.

15. The method according to any one of claims 12 - 14, characterized in that, The multi-stream pilot signal includes a first group of pilot signals, the transmission data includes multi-stream data, and the first configuration information is used to indicate one or more of the following: The number of groups of pilot signals included in the multi-stream pilot signal; The number of pilot streams included in each group of pilot signals in the group of pilot signals; The total transmission power of each group of pilot signals; The transmission power of each stream of pilot signals in the group of pilot signals; The number of data streams included in the multi-stream data; The total transmission power of the multi-stream data and the first group of pilot signals; The total transmission power of the multi-stream data; The transmission power of each stream of data in the multi-stream data; A first identifier for indicating the power allocation scheme adopted by the transmission data and / or the multi-stream pilot signal; And A second identifier for indicating the transmission resource allocation scheme of the multi-stream pilot signal; Wherein, the transmission resources occupied by each group of pilot signals are the same, and the transmission resources occupied by the first group of pilot signals are the transmission resources occupied by the multi-stream data.

16. According to the method described in any one of claims 12 - 15, characterized in that, The method further includes: The first device sends capability information to the second device, and the capability information is used to indicate the transmission mode of the multi-stream pilot signal supported by the first device and / or the transmission mode of the transmission data.

17. According to the method described in claim 16, characterized in that, The capability information is carried on one or more of the following: Radio Resource Control (RRC) message; Uplink Control Information (UCI) message; Uplink message in the random access procedure; Physical Uplink Control Channel (PUCCH); Physical Uplink Shared Channel (PUSCH); And An uplink channel dedicated to artificial intelligence.

18. According to the method described in any one of claims 12 - 17, characterized in that, The first configuration information is carried on one or more of the following: Broadcast message; Downlink message in the random access procedure; Physical Downlink Control Channel (PDCCH); Physical Downlink Shared Channel (PDSCH); and A downlink channel dedicated to artificial intelligence.

19. According to the method described in any one of claims 16 - 18, characterized in that, The first device is a terminal device, and the second device is a network device.

20. A wireless communication method, characterized in that, It includes: The second device transmits a multi-stream pilot signal, where the pilot signals of different streams in the multi-stream pilot signal occupy some or all of the transmission resources differently, and the transmission resources occupied by the pilot signal are some or all of the transmission resources occupied by the transmitted data.

21. According to the method described in claim 20, characterized in that, The pilot signals of different streams in the multi-stream pilot signal occupy some or all of the time-domain transmission resources differently and / or occupy some or all of the frequency-domain transmission resources differently.

22. According to the method described in claim 20 or 21, characterized in that, The multi-stream pilot signal includes a first group of pilot signals, and the transmission resources occupied by the first group of pilot signals are the same. The first device transmits the multi-stream pilot signal, including: The second device transmits the first group of pilot signals based on a first ratio, where the first ratio is the ratio of the transmission power of the first group of pilot signals to the total transmission power corresponding to the transmission resources occupied by the first group of pilot signals.

23. The method according to claim 22, wherein, The first group of pilot signals includes a-stream pilot signals, and the transmission power of each stream pilot signal in the a-stream pilot signals is one / a of the total transmission power of the first group of pilot signals, where a is a positive integer greater than or equal to 1.

24. The method according to claim 22, wherein, The first group of pilot signals includes a first-stream pilot signal and a second-stream pilot signal. The second device transmits the first group of pilot signals based on a first ratio, including: The second device transmits the first-stream pilot signal based on a first sub-ratio, where the first sub-ratio is the ratio of the transmission power of the first-stream pilot signal to the total transmission power of the first group of pilot signals; The second device transmits the second-stream pilot signal based on a second sub-ratio, where the second sub-ratio is the ratio of the transmission power of the second-stream pilot signal to the total transmission power of the first group of pilot signals.

25. The method according to any one of claims 22-24, wherein, The first ratio is one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, and 60%.

26. The method according to any one of claims 20-25, wherein, The transmitted data includes multi-stream data, and the transmission resources occupied by the multi-stream pilot signal are the transmission resources occupied by the multi-stream data. The method further includes: The second device transmits the multi-stream data based on a second ratio, where the second ratio is the ratio of the transmission power of the multi-stream data to the total transmission power corresponding to the transmission resources occupied by the multi-stream pilot signal.

27. The method according to claim 26, wherein, The multi-stream data is b-stream data, and the transmission power of each stream data in the b-stream data is one / b of the total transmission power of the multi-stream data, where b is a positive integer greater than or equal to 1.

28. The method according to claim 26, wherein, The multi-stream data includes a first-stream data and a second-stream data. The second device transmits the multi-stream data based on a second ratio, including: The second device transmits the first-stream data based on a third sub-ratio, where the third sub-ratio is the ratio of the transmission power of the first-stream data to the total transmission power of the multi-stream data; The second device transmits the second-stream data based on a fourth sub-ratio, where the fourth sub-ratio is the ratio of the transmission power of the second-stream data to the total transmission power of the multi-stream data.

29. The method according to any one of claims 26-28, wherein, The second ratio is one of 99%, 98%, 95%, 90%, 87.5%, 85%, 83.3%, 80%, 75%, 70%, 67%, 65%, 60%, 55%, 50%, 40%.

30. The method according to claim 24 or 29, wherein, The first sub-ratio, the second sub-ratio, the third sub-ratio, and the fourth sub-ratio are respectively one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, 70%, 80%.

31. The method according to any one of claims 20-30, wherein, The method further includes: The second device obtains first configuration information, which is used to configure the transmission mode of the multi-stream pilot signal and / or the transmission mode of the transmission data.

32. The method according to claim 31, wherein, The transmission mode of the multi-stream pilot signal includes the association relationship between the multi-stream pilot signal and the transmission resource, and / or the transmission power of the multi-stream pilot signal.

33. The method according to claim 31 or 32, wherein, The multi-stream pilot signal includes a first group of pilot signals, and the transmission data includes multi-stream data. If a first resource unit is used to transmit the first group of pilot signals and the multi-stream data, the first configuration information is used to configure the transmission power of the first group of pilot signals and the transmission power of the multi-stream data in the first resource unit.

34. The method according to any one of claims 31-33, wherein, The multi-stream pilot signal includes a first group of pilot signals, and the transmission data includes multi-stream data. The first configuration information is used to indicate one or more of the following: The number of groups of pilot signals included in the multi-stream pilot signal; The number of pilot streams included in each group of pilot signals in the group of pilot signals; The total transmission power of each group of pilot signals; The transmission power of each stream of pilot signals in the group of pilot signals; The number of data streams included in the multi-stream data; The total transmission power of the multi-stream data and the first group of pilot signals; The total transmission power of the multi-stream data; The transmission power of each stream of data in the multi-stream data; A first identifier, which is used to indicate the power allocation scheme adopted by the transmission data and / or the multi-stream pilot signal; And A second identifier, which is used to indicate the transmission resource allocation scheme of the multi-stream pilot signal; Wherein, the transmission resources occupied by each group of pilot signals are the same, and the transmission resources occupied by the first group of pilot signals are the transmission resources occupied by the multi-stream data.

35. The method according to any one of claims 31 - 34, characterized in that, The method further includes: The second device sends capability information to the first device, and the capability information is used to indicate the transmission mode of the multi-stream pilot signal supported by the second device and / or the transmission mode of the transmission data.

36. The method according to claim 35, characterized in that, The capability information is carried in one or more of the following: Radio Resource Control (RRC) message; Uplink Control Information (UCI) message; Uplink message in the random access process; Physical Uplink Control Channel (PUCCH); Physical Uplink Shared Channel (PUSCH); And An uplink channel dedicated to artificial intelligence.

37. The method according to any one of claims 31 - 36, characterized in that, The first configuration information is carried in one or more of the following: Broadcast message; Downlink message in the random access process; Physical Downlink Control Channel (PDCCH); Physical Downlink Shared Channel (PDSCH); and A downlink channel dedicated to artificial intelligence.

38. The method according to any one of claims 35 - 37, characterized in that, The first device is a terminal device, and the second device is a network device.

39. A device for wireless communication, characterized in that, The device is the first device, and the device includes: A first transmission unit, configured to transmit a multi-stream pilot signal, where pilot signals of different streams in the multi-stream pilot signal occupy some or all of different transmission resources, and the transmission resources occupied by the pilot signal are some or all of the transmission resources occupied by transmission data.

40. The device according to claim 39, characterized in that, Pilot signals of different streams in the multi-stream pilot signal occupy some or all of different time-domain transmission resources and / or frequency-domain transmission resources.

41. The device according to claim 39 or 40, characterized in that, The multi-stream pilot signal includes a first group of pilot signals, and the first group of pilot signals occupy the same transmission resources. The first transmission unit is configured to: Transmit the first group of pilot signals based on a first ratio, where the first ratio is the ratio of the transmission power of the first group of pilot signals to the total transmission power corresponding to the transmission resources occupied by the first group of pilot signals.

42. The device according to claim 41, characterized in that, The first group of pilot signals includes pilot signals of a streams, and the transmission power of each stream of pilot signals in the pilot signals of a streams is one / a of the total transmission power of the first group of pilot signals, where a is a positive integer greater than or equal to 1.

43. The device according to claim 41, characterized in that, The first group of pilot signals includes a first-stream pilot signal and a second-stream pilot signal. The first transmission unit is configured to: Transmit the first-stream pilot signal based on a first sub-ratio, where the first sub-ratio is the ratio of the transmission power of the first-stream pilot signal to the total transmission power of the first group of pilot signals; Transmit the second-stream pilot signal based on a second sub-ratio, where the second sub-ratio is the ratio of the transmission power of the second-stream pilot signal to the total transmission power of the first group of pilot signals.

44. The device according to any one of claims 41 - 43, characterized in that, The first ratio is one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, and 60%.

45. The device according to any one of claims 39 - 44, characterized in that, The transmission data includes multi-stream data, and the transmission resources occupied by the multi-stream pilot signal are the transmission resources occupied by the multi-stream data. The device further includes: A second transmission unit, configured to transmit the multi-stream data based on a second ratio, where the second ratio is the ratio of the transmission power of the multi-stream data to the total transmission power corresponding to the transmission resources occupied by the multi-stream pilot signal.

46. The device according to claim 45, characterized in that, The multi-stream data is b-stream data, and the transmission power of each stream of data in the b-stream data is one / b of the total transmission power of the multi-stream data, where b is a positive integer greater than or equal to 1.

47. The device according to claim 45, characterized in that, The multi-stream data includes a first-stream data and a second-stream data. The second transmission unit is configured to: Transmit the first-stream data based on a third sub-ratio, where the third sub-ratio is the ratio of the transmission power of the first-stream data to the total transmission power of the multi-stream data; Transmit the second-stream data based on a fourth sub-ratio, where the fourth sub-ratio is the ratio of the transmission power of the second-stream data to the total transmission power of the multi-stream data.

48. The device according to any one of claims 45 - 47, characterized in that, The second ratio is one of 99%, 98%, 95%, 90%, 87.5%, 85%, 83.3%, 80%, 75%, 70%, 67%, 65%, 60%, 55%, 50%, 40%.

49. The device according to claim 43 or 48, characterized in that, The first sub - ratio, the second sub - ratio, the third sub - ratio, and the fourth sub - ratio are respectively one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, 70%, 80%.

50. The device according to any one of claims 39 - 49, characterized in that, The device further includes: An acquisition unit, configured to acquire first configuration information, where the first configuration information is used to configure the transmission mode of the multi - stream pilot signal and / or the transmission mode of the transmission data.

51. The device according to claim 50, characterized in that, The transmission mode of the multi - stream pilot signal includes the association relationship between the multi - stream pilot signal and the transmission resource, and / or the transmission power of the multi - stream pilot signal.

52. The device according to claim 50 or 51, characterized in that, The multi - stream pilot signal includes a first group of pilot signals, and the transmission data includes multi - stream data. If a first resource unit is used to transmit the first group of pilot signals and the multi - stream data, the first configuration information is used to configure the transmission power of the first group of pilot signals and the transmission power of the multi - stream data in the first resource unit.

53. The device according to any one of claims 50 - 52, characterized in that, The multi - stream pilot signal includes a first group of pilot signals, the transmission data includes multi - stream data, and the first configuration information is used to indicate one or more of the following: The number of groups of pilot signals included in the multi - stream pilot signal; The number of pilot streams included in each group of pilot signals in the group of pilot signals; The total transmission power of each group of pilot signals; The transmission power of each stream of pilot signals in the group of pilot signals; The number of data streams included in the multi - stream data; The total transmission power of the multi - stream data and the first group of pilot signals; The total transmission power of the multi - stream data; The transmission power of each stream of data in the multi - stream data; A first identifier, used to indicate the power allocation scheme adopted by the transmission data and / or the multi - stream pilot signal; And A second identifier, used to indicate the transmission resource allocation scheme of the multi - stream pilot signal; Wherein, the transmission resources occupied by each group of pilot signals are the same, and the transmission resources occupied by the first group of pilot signals are the transmission resources occupied by the multi - stream data.

54. The device according to any one of claims 50 - 53, characterized in that, The device further includes: A sending unit, configured to send capability information to a second device, where the capability information is used to indicate the transmission mode of the multi - stream pilot signal supported by the first device and / or the transmission mode of the transmission data.

55. The device according to claim 54, wherein, The capability information is carried in one or more of the following: Radio Resource Control (RRC) message; Uplink Control Information (UCI) message; Uplink message in the random access process; Physical Uplink Control Channel (PUCCH); Physical Uplink Shared Channel (PUSCH); And An uplink channel dedicated to artificial intelligence.

56. The device according to any one of claims 50-55, wherein, The first configuration information is carried in one or more of the following: Broadcast message; Downlink message in the random access process; Physical Downlink Control Channel (PDCCH); Physical Downlink Shared Channel (PDSCH); and A downlink channel dedicated to artificial intelligence.

57. The device according to any one of claims 54-56, wherein, The first device is a terminal device, and the second device is a network device.

58. A device for wireless communication, wherein, The device is the second device, and the device includes: A first transmission unit for transmitting a multi-stream pilot signal, wherein for the multi-stream pilot signal, the pilot signals of different streams occupy some or all of different transmission resources, and the transmission resources occupied by the pilot signals are some or all of the transmission resources occupied by transmission data.

59. The device according to claim 58, wherein, For the multi-stream pilot signal, the pilot signals of different streams occupy some or all of different time-domain transmission resources and / or frequency-domain transmission resources.

60. The device according to claim 58 or 59, wherein, The multi-stream pilot signal includes a first group of pilot signals, and the pilot signals in the first group occupy the same transmission resources. The first transmission unit is configured to: Transmit the first group of pilot signals based on a first ratio, where the first ratio is the ratio of the transmission power of the first group of pilot signals to the total transmission power corresponding to the transmission resources occupied by the first group of pilot signals.

61. The device according to claim 60, wherein, The first group of pilot signals includes pilot signals of a streams, and the transmission power of each stream of pilot signals in the pilot signals of a streams is one / a of the total transmission power of the first group of pilot signals, where a is a positive integer greater than or equal to 1.

62. The device according to claim 60, wherein, The first group of pilot signals includes a first-stream pilot signal and a second-stream pilot signal. The first transmission unit is configured to: Transmit the first-stream pilot signal based on a first sub-ratio, where the first sub-ratio is the ratio of the transmission power of the first-stream pilot signal to the total transmission power of the first group of pilot signals; Transmit the second-stream pilot signal based on a second sub-ratio, where the second sub-ratio is the ratio of the transmission power of the second-stream pilot signal to the total transmission power of the first group of pilot signals.

63. The device according to any one of claims 60-62, wherein, The first ratio is one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, and 60%.

64. The device according to any one of claims 58-63, wherein, The transmission data includes multi-stream data, and the transmission resources occupied by the multi-stream pilot signal are the transmission resources occupied by the multi-stream data. The device further includes: A second transmission unit for transmitting the multi-stream data based on a second ratio, where the second ratio is the ratio of the transmission power of the multi-stream data to the total transmission power corresponding to the transmission resources occupied by the multi-stream pilot signal.

65. The device according to claim 64, wherein,The multi-stream data is b-stream data, and the transmission power of each stream of data in the b-stream data is one / b of the total transmission power of the multi-stream data, where b is a positive integer greater than or equal to 1.

66. The device according to claim 64, wherein, The multi-stream data includes a first-stream data and a second-stream data. The second transmission unit is configured to: Transmit the first-stream data based on a third sub-ratio, where the third sub-ratio is the ratio of the transmission power of the first-stream data to the total transmission power of the multi-stream data; Transmit the second-stream data based on a fourth sub-ratio, where the fourth sub-ratio is the ratio of the transmission power of the second-stream data to the total transmission power of the multi-stream data.

67. The device according to any one of claims 64 - 66, wherein, The second ratio is one of 99%, 98%, 95%, 90%, 87.5%, 85%, 83.3%, 80%, 75%, 70%, 67%, 65%, 60%, 55%, 50%, 40%.

68. The device according to claim 62 or 66, wherein, The first sub - ratio, the second sub - ratio, the third sub - ratio, and the fourth sub - ratio are respectively one of 1%, 2%, 5%, 10%, 12.5%, 15%, 16.7%, 20%, 25%, 30%, 33%, 35%, 40%, 45%, 50%, 60%, 70%, 80%.

69. The device according to any one of claims 58 - 68, wherein, The device further includes: An acquisition unit, configured to acquire first configuration information, where the first configuration information is used to configure the transmission mode of the multi - stream pilot signal and / or the transmission mode of the transmitted data.

70. The device according to claim 69, wherein, The transmission mode of the multi - stream pilot signal includes the association relationship between the multi - stream pilot signal and the transmission resource, and / or the transmission power of the multi - stream pilot signal.

71. The device according to claim 69 or 70, wherein, The multi - stream pilot signal includes a first group of pilot signals, and the transmitted data includes multi - stream data. If a first resource unit is used to transmit the first group of pilot signals and the multi - stream data, the first configuration information is used to configure the transmission power of the first group of pilot signals and the transmission power of the multi - stream data in the first resource unit.

72. The device according to any one of claims 69 - 71, wherein, The multi - stream pilot signal includes a first group of pilot signals, and the transmitted data includes multi - stream data. The first configuration information is used to indicate one or more of the following: The number of groups of pilot signals included in the multi - stream pilot signal; The number of pilot streams included in each group of pilot signals in the group of pilot signals; The total transmission power of each group of pilot signals; The transmission power of each stream of pilot signals in the group of pilot signals; The number of data streams included in the multi - stream data; The total transmission power of the multi - stream data and the first group of pilot signals; The total transmission power of the multi - stream data; The transmission power of each stream of data in the multi - stream data; A first identifier, configured to indicate the power allocation scheme adopted by the transmitted data and / or the multi - stream pilot signal; And A second identifier, configured to indicate the transmission resource allocation scheme of the multi - stream pilot signal; Wherein, the transmission resources occupied by each group of pilot signals are the same, and the transmission resources occupied by the first group of pilot signals are the transmission resources occupied by the multi - stream data.

73. The device according to any one of claims 69 - 72, wherein, The device further includes: A sending unit, configured to send capability information to a first device, where the capability information is used to indicate the transmission mode of the multi - stream pilot signal supported by the second device and / or the transmission mode of the transmitted data.

74. The device according to claim 73, wherein, The capability information is carried in one or more of the following: Radio Resource Control (RRC) message; Uplink Control Information (UCI) message; Uplink message in a random access procedure; Physical Uplink Control Channel (PUCCH); Physical Uplink Shared Channel (PUSCH); And An uplink channel dedicated to artificial intelligence.

75. The device according to any one of claims 69 - 74, characterized in that, The first configuration information is carried in one or more of the following: Broadcast message; Downlink message in a random access procedure; Physical Downlink Control Channel (PDCCH); Physical Downlink Shared Channel (PDSCH); and A downlink channel dedicated to artificial intelligence.

76. The device according to any one of claims 73 - 75, characterized in that, The first device is a terminal device, and the second device is a network device.

77. A device for wireless communication, characterized in that, It includes a memory and a processor. The memory is used to store a program, and the processor is used to call the program in the memory to execute the method according to any one of claims 1 - 19 or 20 - 38.

78. A device for wireless communication, characterized in that, Comprising a processor for invoking a program from a memory to execute the method according to any one of claims 1-19 or 20-38.

79. A chip, characterized in that, Comprising a processor for invoking a program from a memory such that a device installed with the chip executes the method according to any one of claims 1-19 or 20-38.

80. A computer - readable storage medium, characterized in that, Having a program stored thereon, the program causing a computer to execute the method according to any one of claims 1-19 or 20-38.

81. A computer program product, characterized in that, Comprising a program, the program causing a computer to execute the method according to any one of claims 1-19 or 20-38.

82. A computer program, characterized in that, The computer program causes a computer to execute the method according to any one of claims 1-19 or 20-38.

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