Communication method and apparatus for simultaneous information and power transfer, and storage medium

Abstract

A communication method and apparatus for simultaneous information and power transfer, and a storage medium. The method comprises: mapping n1 power transfer modulation symbols and n2 data modulation symbols to different resource elements of a first resource block, wherein the power transfer modulation symbols are obtained on the basis of time-domain constant envelope modulation, such that time-domain modulation symbols of a power transfer signal have the characteristic of a constant amplitude; and then, a first communication apparatus sending the n1 power transfer modulation symbols and the n2 data modulation symbols by means of the first resource block. The effect of reducing the PAPR of a wireless signal during simultaneous information and power transfer is achieved.

Description

Method, apparatus and storage medium for simultaneous wireless information and power transfer

[0001] The present application claims priority to the Chinese patent application No. 202410886069.2, filed on July 2, 2024, and entitled "Method, apparatus and storage medium for simultaneous wireless information and power transfer", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and in particular to a method, apparatus and storage medium for simultaneous wireless information and power transfer. BACKGROUND

[0003] With the development of wireless networks and the evolution of business needs, there are a large number of Internet of Things (IoT) nodes in the network. These IoT nodes are low in cost and small in size, and cannot carry large-capacity batteries, facing the problem of short standby life. In order to solve this problem, the technical field considers using environmental energy collection to provide IoT nodes with a continuous source of energy. Wireless radio frequency energy is controllable in terms of energy size and energy source, and has certain penetration and long transmission distance, becoming one of the candidate energy sources. Therefore, in a cellular mobile communication network, wireless energy transmission through a base station is one of the important ways to solve the short battery life of IoT in the future. In order to ensure the transmission of data during the charging process of IoT nodes and improve resource utilization, simultaneous wireless information and power transfer (SWIPT) is an important technical means.

[0004] The current SWIPT technology is implemented as follows: in a given time slot, a part of the frequency domain resources is used for wireless energy transmission, and another part of the frequency domain resources is used for data transmission. Since the charging signal during wireless energy transmission and the data signal during data transmission are both random signals, the peak to average power ratio (PAPR) of the entire signal is high, which leads to distortion of the wireless signal and affects the demodulation performance of the data signal and deteriorates the charging efficiency. Therefore, how to reduce the PAPR of the wireless signal in the process of simultaneous wireless information and power transfer is a problem to be solved. SUMMARY

[0005] The method, apparatus and storage medium for simultaneous wireless information and power transfer provided by the embodiments of the present application can reduce the PAPR of the wireless signal used for simultaneous wireless information and power transfer, thereby avoiding the distortion of the wireless signal used for simultaneous wireless information and power transfer affecting the demodulation performance of the data signal and deteriorating the charging efficiency.

[0006] In a first aspect, an embodiment of the present application provides a communication method for simultaneous transmission of data and energy. An execution subject of the method can be a first communication device, which can be a communication apparatus or a component (such as a chip or a chip system) in the communication apparatus, or can also be a logic module or software capable of realizing all or part of the functions of the communication apparatus. The communication apparatus can be a terminal or a network device.

[0007] In the method, the first communication device maps n1 energy modulation symbols and n2 data modulation symbols to different resource elements (REs) of a first resource block, the energy modulation symbols are obtained based on time-domain constant envelope modulation, so that the time-domain modulation symbols of the energy signal have the feature of constant amplitude (or constant amplitude), and then the first communication device transmits the n1 energy modulation symbols and the n2 data modulation symbols through the first resource block, to achieve the effect of reducing the PAPR of the wireless signal in the simultaneous transmission of data and energy.

[0008] In a possible implementation of the first aspect, the first communication device can further receive first indication information, the first indication information indicating inter-carrier interference (ICI) information, and transmit n3 energy modulation symbols and n4 data modulation symbols through a second resource block, wherein n3 and / or n4 are determined according to the ICI information, so as to adjust the power of each energy subcarrier by adjusting the number of energy modulation symbols, thereby avoiding ICI.

[0009] In a second aspect, an embodiment of the present application provides a communication method for simultaneous transmission of data and energy. An execution subject of the method can be a second communication device, which can be a communication apparatus or a component (such as a chip or a chip system) in the communication apparatus, or can also be a logic module or software capable of realizing all or part of the functions of the communication apparatus. The communication apparatus can be a terminal or a network device.

[0010] In the method, the second communication device receives n1 energy modulation symbols and n2 data modulation symbols on a first resource block, the energy modulation symbols are obtained based on time-domain constant envelope modulation, and the n2 data modulation symbols are demodulated.

[0011] In a possible implementation of the second aspect, the second communication device can determine ICI information based on a first signal, the first signal being obtained by mapping the n1 energy modulation symbols and the n2 data modulation symbols to different REs of the first resource block, and send first indication information indicating the ICI information.

[0012] In combination with the first aspect or the second aspect, as an example, the n1 energy transfer modulation symbols are obtained by performing a discrete Fourier transform (DFT) on the n1 time domain modulation symbols, so that the time domain envelope modulation symbols are converted to the frequency domain, and then OFDM symbols can be obtained based on symbol mapping, and energy transfer and data transmission are implemented simultaneously.

[0013] In combination with the first aspect or the second aspect, as an example, in order to improve the energy transfer efficiency, the first communication device can map the n1 energy transfer modulation symbols on the REs that are frequency-continuous in the first resource block.

[0014] In combination with the first aspect or the second aspect, as an example, in one OFDM symbol of the first resource block, the subcarriers occupied by the energy transfer modulation symbols and the subcarriers occupied by the data modulation symbols do not overlap, so as to avoid interference of the energy transfer signal on the data signal.

[0015] In a third aspect, an embodiment of the present application provides a communication device, including a module for performing the method in any possible implementation of the first aspect, or including a module for performing the method in any possible implementation of the second aspect.

[0016] In a fourth aspect, an embodiment of the present application provides a communication device, including a processor configured to perform the method in the first aspect, the second aspect, or any possible implementation.

[0017] In a possible implementation, the communication device further includes a memory configured to store the computer program.

[0018] In a possible implementation, the communication device further includes a communication interface configured to input and output signals.

[0019] In a fifth aspect, an embodiment of the present application provides a communication system, including a device configured to perform the method in the first aspect or any possible implementation, and a device configured to perform the method in the second aspect or any possible implementation.

[0020] In a sixth aspect, an embodiment of the present application provides a chip, including a processor configured to call and run computer instructions from a memory, so that the chip performs the method in the first aspect, the second aspect, or any possible implementation.

[0021] In a seventh aspect, an embodiment of the present application provides a computer readable storage medium configured to store computer program instructions, when the computer program instructions are executed by a communication device, the communication device performs the method in the first aspect, the second aspect, or any possible implementation.

[0022] In an eighth aspect, an embodiment of the present application provides a computer program product, comprising computer program instructions, which, when executed by a communication apparatus, cause the communication apparatus to perform the method according to the first aspect, the second aspect, or any possible implementation manner.

[0023] The above-mentioned second aspect to eighth aspect and each possible implementation manner have the beneficial effects as described above in the first aspect and each possible implementation manner, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0024] FIG. 1 is a structural schematic diagram of a mobile communication system to which an embodiment of the present application is applied;

[0025] FIG. 2 is a schematic diagram of a system architecture of an O-RAN provided by an embodiment of the present application;

[0026] FIG. 3 is a schematic diagram of an application scenario provided by an embodiment of the present application;

[0027] FIG. 4 is a schematic diagram of a number-energy co-transmission resource provided by the present application;

[0028] FIG. 5 is a schematic diagram of another number-energy co-transmission resource provided by the present application;

[0029] FIG. 6 is a schematic diagram of a subcarrier frequency offset of number-energy co-transmission provided by the present application;

[0030] FIG. 7 is a schematic flowchart of a number-energy co-transmission communication method provided by an embodiment of the present application;

[0031] FIG. 8 is a flowchart of signal modulation provided by an embodiment of the present application;

[0032] FIG. 9 is a flowchart of signal demodulation provided by an embodiment of the present application;

[0033] FIG. 10 is an interactive flowchart of a number-energy co-transmission communication method provided by an embodiment of the present application;

[0034] FIG. 11 is a schematic diagram of power allocation of an energy transmission subcarrier provided by an embodiment of the present application;

[0035] FIG. 12 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application;

[0036] FIG. 13 is a schematic block diagram of another communication apparatus provided by an embodiment of the present application;

[0037] FIG. 14 is a structural schematic diagram of a network device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0038] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0039] FIG. 1 is a schematic diagram of an architecture of a communication system 1000 according to an embodiment of the present application. As shown in FIG. 1, the communication system 1000 includes a radio access network (RAN) 100, wherein the RAN 100 includes at least one RAN node (e.g., 110a and 110b in FIG. 1, collectively referred to as 110), and can further include at least one terminal (e.g., 120a-120j in FIG. 1, collectively referred to as 120). The RAN 100 can further include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG. 1). The terminals 120 are connected to the RAN nodes 110 in a wireless manner. Terminals and terminals, and RAN nodes and RAN nodes can be connected to each other in a wired or wireless manner. The communication system 1000 can further include a core network (CN) 200. The RAN nodes 110 are connected to the core network 200 in a wireless or wired manner. The core network devices in the core network 200 and the RAN nodes 110 in the RAN 100 can be independent and different physical devices, or can be the same physical device integrated with the logical functions of the core network devices and the logical functions of the RAN nodes. The communication system 1000 can further include the Internet 300.

[0040] The RAN 100 can be an evolved universal terrestrial radio access (E-UTRA) system, a new radio (NR) system, a 6th generation (6G) wireless access system, and a future wireless access system defined in the 3rd generation partnership project (3GPP). The RAN 100 can also include two or more different wireless access systems. The RAN 100 can also be an open RAN (O-RAN).

[0041] A RAN node, also referred to as a radio access network device, a RAN entity, or an access node, is configured to help a terminal to access to a communication system over the air. In one application scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, a next generation NodeB in a 6th generation (6G) mobile communication system, or a base station in a future mobile communication system. The RAN node can be a macro base station (e.g., 110a in FIG. 1), or a micro base station or an indoor station (e.g., 110b in FIG. 1), or a relay node or a donor node.

[0042] In another application scenario, a terminal can access to a communication system over the air by cooperation of a plurality of RAN nodes, and different RAN nodes implement part of functions of a base station. For example, the RAN node can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). Here, the CU implements functions of a radio resource control protocol and a packet data convergence protocol (PDCP) of a base station, and can further implement a function of a service data adaptation protocol (SDAP). The DU implements functions of a radio link control layer and a medium access control (MAC) layer of a base station, and can further implement part of functions or all functions of a physical layer. For details of the protocol layers, refer to relevant technical specifications of 3GPP. The RU can be configured to implement functions of transceiving a radio frequency signal. The CU and the DU can be two independent RAN nodes, or can be integrated in a same RAN node, e.g., integrated in a baseband unit (BBU). The RU can be included in a radio frequency device, e.g., included in a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes, i.e., a CU-control plane and a CU-user plane.

[0043] In different systems, the RAN node can have different names, for example, in an O-RAN system, the CU can be referred to as an open CU (O-CU), the DU can be referred to as an open DU (O-DU), and the RU can be referred to as an open RU (O-RU). The RAN node in the embodiments of the present application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module, for example, the RAN node can be a server loaded with a corresponding software module. The embodiments of the present application do not limit the specific technology and specific equipment form adopted by the RAN node. For ease of description, a base station is described as an example of the RAN node in the following.

[0044] The terminal is a device with wireless transceiver function, which can send signals to the base station or receive signals from the base station. The terminal can also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, remote medical treatment, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, airplane, ship, robot, mechanical arm, smart home device, etc. The embodiments of the present application do not limit the specific technology and specific equipment form adopted by the terminal.

[0045] The base station and the terminal can be fixed in position or movable. The base station and the terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water surface; can also be deployed on airplanes, balloons and artificial satellites. The embodiments of the present application do not limit the application scenarios of the base station and the terminal.

[0046] The roles of the base station and the terminal can be relative. For example, the helicopter or the drone 120i in FIG. 1 can be configured as a mobile base station, and for the terminal 120j that accesses the wireless access network 100 through the 120i, the terminal 120i is a base station; but for the base station 110a, the 120i is a terminal, that is, the 110a and the 120i communicate through a wireless air interface protocol. Of course, the 110a and the 120i can also communicate through a base station-to-base station interface protocol, and in this case, the 120i is also a base station relative to the 110a. Therefore, the base station and the terminal can be collectively referred to as a communication device, and the 110a and the 110b in FIG. 1 can be referred to as a communication device with a base station function, and the 120a-120j in FIG. 1 can be referred to as a communication device with a terminal function.

[0047] The base station and the terminal, the base station and the base station, and the terminal and the terminal can communicate through a licensed spectrum, can communicate through an unlicensed spectrum, or can communicate through both the licensed spectrum and the unlicensed spectrum; can communicate through a spectrum below 6 gigahertz (GHz), can communicate through a spectrum above 6 GHz, or can communicate through both the spectrum below 6 GHz and the spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0048] In the embodiments of the present application, the functions of the base station can also be performed by a module (such as a chip) in the base station or by a control subsystem containing base station functions. The control subsystem containing base station functions herein can be a control center in the above-mentioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. The functions of the terminal can also be performed by a module (such as a chip or a modem) in the terminal or by a device containing terminal functions.

[0049] In the present application, the base station sends a downlink signal or downlink information to the terminal, and the downlink information is carried on a downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on an uplink channel. In order to communicate with the base station, the terminal needs to establish a wireless connection on a cell controlled by the base station. The cell that establishes a wireless connection with the terminal is called the service cell of the terminal. When the terminal communicates with the service cell, it will also be interfered by signals from neighboring cells.

[0050] FIG. 2 is a schematic diagram of a system architecture of an O-RAN provided by the present application. The O-RAN system can include other components in addition to the components shown in FIG. 2. As shown in FIG. 2, the RAN node communicates with the core network through a backhaul and communicates with the terminal through an air interface. Specifically, the BBU in the RAN node communicates with the core network through the backhaul, and the RU in the RAN node communicates with at least one terminal through the air interface. The BBU communicates with at least one RU through a fronthaul, and the BBU and the RU can be co-located or not. The BBU includes at least one CU and at least one DU, and the CU and the DU can communicate through at least one midhaul.

[0051] The signal processing method provided by the embodiments of the present application can be applied to various mobile communication scenarios under the protocol framework of long term evolution (LTE) or NR. For example, the signal processing method can be applied to the scenarios of point-to-point single connection, multi-hop single connection, dual connectivity (DC) or multi-connection between the base station and the user equipment, and the like. Referring to FIG. 3, FIG. 3 is a schematic diagram of an application scenario provided by the embodiments of the present application. As shown in FIG. 3, FIG. 3 shows four application scenarios, wherein (a) is a point-to-point single connection, (b) is a multi-hop single connection, (c) is dual connectivity, and (d) is a multi-hop multi-connection. It should be understood that the signal processing method provided by the embodiments of the present application can be applied to various application scenarios shown in FIG. 2. It should also be understood that FIG. 3 is exemplary only and does not limit the application scenarios applicable to the present application. Any scenario in which a network side device transmits energy to another device in a cellular network belongs to the application scenario of the embodiments of the present application. For example, the application scenarios of the embodiments of the present application include but are not limited to: a base station transmits energy to a terminal, a base station transmits energy to another base station, a base station transmits energy to a relay node, a relay base station transmits energy to a terminal, a terminal transmits energy to another terminal, and the like. When the network side device transmits energy to the terminal, it can be any scenario in which multiple network devices transmit energy to one terminal or multiple network devices transmit energy to multiple terminals. The network device can include the RAN node in the RAN 100 and / or the core network device in the core network 200, and the like.

[0052] The technical scheme provided in the embodiments of the present application can be applied to wireless communication / energy charging between communication devices. The wireless communication / energy charging between communication devices can include wireless communication / energy charging between a network device and a terminal, wireless communication / energy charging between network devices, and wireless communication / energy charging between terminals. In the embodiments of the present application, the term "wireless communication" can also be referred to as "communication", and the term "communication" can also be described as "data transmission" or "information transmission". The term "wireless energy charging" can also be referred to as "energy charging", "energy transmission", or "charging", and the term "energy transmission" can also be described as "wireless energy transmission", "wireless charging", "radio frequency energy charging", or "radio frequency charging". The term "wireless data and energy simultaneous transmission" can also be described as "data and energy simultaneous transmission", "energy transmission with data", "data transmission with energy", "data and energy integrated transmission", or "wireless data and energy cooperative transmission". In the embodiments of the present application, the wireless signal used to implement data and energy simultaneous transmission can be referred to as a data and energy signal or a data and energy simultaneous transmission signal. The data and energy signal can include a data signal and an energy signal, and the energy signal can also be referred to as an energy signal, an energy charging signal, a charging signal, a wireless energy signal, a wireless energy charging signal, or a wireless charging signal. In the following description, the wireless signal can be understood as a wireless signal used for data and energy simultaneous transmission unless otherwise specified.

[0053] In the embodiments of the present application, one or more orthogonal frequency division multiplexing (OFDM) symbols can be used to carry the wireless signal used for data and energy simultaneous transmission. In some applications, the OFDM symbol can be replaced by a Discrete Fourier Transform-spread-OFDM (DFT-s-OFDM) symbol. For example, the sending end can map the frequency domain modulation symbol to different REs through symbol mapping, and then perform inverse fast Fourier transform (IFFT) on the subcarriers to which the frequency domain symbol is allocated, to obtain an OFDM symbol. Further, the sending end can perform parallel-to-serial conversion, windowing, and cyclic prefix addition on the generated OFDM symbol, and then perform up-conversion, and finally transmit the OFDM symbol through a radio frequency unit (such as an antenna). In the present application, the frequency domain modulation symbol can include an energy modulation symbol and a data modulation symbol.

[0054] It should be understood that the wireless signal for simultaneous power and data transmission can be mapped by one or more power modulation symbols and one or more data modulation symbols. Among them, the power signal can include one or more power modulation symbols, or the power signal can be mapped by one or more power modulation symbols; the data signal can include one or more data modulation symbols, or the data signal can be mapped by one or more data modulation symbols. For ease of description, the subcarriers carrying the power signal (or carrying the power modulation symbol) in the same OFDM symbol are referred to as power subcarriers, and the subcarriers carrying the data signal (or carrying the data modulation symbol) are referred to as data subcarriers.

[0055] At present, the simultaneous power and data transmission technology usually realizes the multiplexing of resources by transmitting different signals through different REs or resource blocks (RBs). As shown in FIG. 4, in the OFDM symbol in a given time slot, a part of the frequency domain resources is used for wireless energy transmission, or a part of the frequency domain resources carries the power signal; another part of the frequency domain resources is used for data transmission, or another part of the frequency domain resources carries the data signal. Through this frequency domain multiplexing manner, the base station can guarantee to serve the charging terminal at the same time while minimizing the delay impact on the communication terminal. However, since the communication signal is a random signal, that is, the symbol carried on each subcarrier is random, it generally has a high PAPR, for example, the typical PAPR of the LTE signal is 8.5 dB. On this basis, if the random charging signal is superimposed, the number of subcarriers carrying random symbols in the frequency domain is more, and the PAPR of the wireless signal is higher, and high PAPR is not friendly to hardware, for example, high PAPR causes the power amplifier to work in a higher linear range, thereby causing signal distortion, affecting the demodulation performance of the data signal, and deteriorating the charging efficiency.

[0056] In order to reduce the PAPR of the wireless signal in the simultaneous transmission of data and energy, referring to FIG. 5, in some communication transmission schemes, it is considered to use one RE to transmit energy, so that the RE is allocated very high power to reduce the PAPR of the whole wireless signal. Based on this, referring to FIG. 6, the horizontal axis represents frequency and the vertical axis represents power. In an ideal case, due to the orthogonality of the subcarriers, there is no interference between the energy subcarriers and the data subcarriers. However, in an actual communication scenario, due to the Doppler effect, oscillator instability, etc., there is usually a frequency offset (referred to as frequency offset). The frequency offset will cause the orthogonality between the subcarriers to be destroyed, thereby causing ICI. Referring to FIG. 6, in the case of frequency offset, there is a part of data and interference on each subcarrier, and the energy subcarrier interferes most with a nearby data subcarrier. Therefore, in a non-ideal case, although the simultaneous transmission of data and energy is realized by including one high-power energy subcarrier and multiple low-power data subcarriers, the PAPR is reduced, but the signal-to-interference-and-noise ratio of the data subcarriers is reduced, which affects the quality of data transmission.

[0057] Therefore, the present application provides a communication method for simultaneous transmission of data and energy. The energy signal in the simultaneous transmission of data and energy is designed as a non-random signal, such as an energy signal obtained by time-domain constant envelope modulation, so that the time-domain modulation symbol of the energy signal has the characteristic of constant amplitude (or constant amplitude). Therefore, the PAPR of the wireless signal in the process of simultaneous transmission of data and energy is reduced, and other problems affecting the quality of communication are not introduced, such as increasing the power of the energy subcarrier to reduce the PAPR. The present application does not increase the signal-to-interference-and-noise ratio of the data subcarriers.

[0058] The method provided by the present application will be described in detail below with reference to the accompanying drawings. In the following examples, the interaction between the first communication device and the second communication device is taken as an example to realize wireless communication. In the process of simultaneous transmission of data and energy, the first communication device can be the transmitting end of the wireless signal, and the second communication device can be the receiving end of the wireless signal. The second communication device can supplement energy through the energy signal in the wireless signal; the second communication device can also receive the data signal in the wireless signal to realize communication. In the present application, the second communication device which supplements energy through the energy signal in the wireless signal and the second communication device which realizes communication by receiving the data signal in the wireless signal can be the same communication device or two different communication devices.

[0059] The application does not limit the transmission direction of the simultaneous power and data transmission, for example, the wireless signal can be an uplink transmission signal, a downlink transmission signal, or a sidelink transmission signal, etc. When the wireless signal is an uplink transmission signal, the first communication device can be a terminal, and the second communication device can be a network device; when the wireless signal is a downlink transmission signal, the first communication device can be a network device, and the second communication device can be a terminal; when the wireless signal is a sidelink transmission signal, the first communication device can be a terminal, and the second communication device can be another terminal. When the application is applied to IoT, the first communication device can be a network device, and the second communication device can be an IoT terminal.

[0060] It should also be understood that the terminal described above can be replaced by a component (such as a chip, a chip system, a processor, etc.) configured in a terminal device, or a logic module or software capable of realizing all or part of the functions of the terminal; the network device described above can also be replaced by a component (such as a chip, a chip system, a processor, etc.) configured in a network device, or a logic module or software capable of realizing all or part of the functions of the network device.

[0061] FIG. 7 is a schematic flowchart of a communication method 200 for simultaneous power and data transmission according to an embodiment of the application. As shown in FIG. 7, the method 200 can include some or all of the steps in S210 to S230. The steps in the method 200 will be described in detail below.

[0062] In S210, the first communication device maps n1 power modulation symbols and n2 data modulation symbols to different REs of a first resource block, n1 being a positive integer, and n2 being a positive integer. The power modulation symbol is obtained based on time domain constant envelope modulation. Based on this, the amplitude of the time domain modulation symbol of the power modulation symbol is constant, so that the power signal mapped by the power modulation symbol is a non-random signal, thereby reducing the PAPR of the wireless signal.

[0063] The first resource block can include at least one OFDM symbol in the time domain and a plurality of subcarriers in the frequency domain, for example, in the NR system, the first resource block has 12 subcarriers in the frequency domain. The at least one OFDM symbol and the plurality of subcarriers on the first resource block form a plurality of REs. In the NR system, the RE is the smallest resource unit in the physical resource, occupying 1 OFDM symbol in the time domain and 1 subcarrier in the frequency domain. For each frequency domain modulation symbol (such as a power modulation symbol or a data modulation symbol), it occupies one RE in the first resource block. In order to ensure communication quality, the subcarriers occupied by the power modulation symbol and the subcarriers occupied by the data modulation symbol do not overlap in the same OFDM symbol.

[0064] The embodiments of the present application do not limit the time-domain constant envelope modulation manner adopted to obtain the n1 energy transfer modulation symbols, for example, can include continuous phase modulation (CPM), linear frequency modulation (LFM) and the like. The embodiments of the present application do not limit the modulation manner of the n2 data modulation symbols, for example, can be obtained based on constellation mapping.

[0065] In the embodiments of the present application, the n1 energy transfer modulation symbols can be preset or preconfigured; or the n1 energy transfer modulation symbols can be obtained by the first communication device based on the n1 time-domain modulation symbols. The present application does not limit the implementation manner of the n1 time-domain modulation symbols into the n1 energy transfer modulation symbols in the frequency domain. Illustratively, the first communication device can perform DFT on the n1 time-domain modulation symbols to obtain the n1 energy transfer modulation symbols in the frequency domain. Alternatively, the n1 time-domain modulation symbols can be preset or preconfigured; or the n1 energy transfer modulation symbols can be obtained by the first communication device by performing time-domain constant envelope modulation on the bit sequence.

[0066] The modulation process of the n1 energy transfer modulation symbols and the n2 data modulation symbols in the embodiments of the present application will be described illustratively in combination with FIG. 8.

[0067] Referring to FIG. 8, the first communication device can perform time-domain constant envelope modulation on the first bit sequence to obtain a time-domain modulation symbol sequence, which can include n1 time-domain modulation symbols, or the length of the time-domain modulation symbol sequence is n1. The first bit sequence can be preset, or the first bit sequence can be randomly generated by the first communication device, which is not limited in the present application.

[0068] In an example, the first communication device can perform time-domain constant envelope modulation on a sequence with a length of N bits based on CPM to obtain a time-domain modulation symbol sequence with a length of n1. According to the principle of CPM, the baseband waveform is carried on the phase of the carrier, and the amplitude remains constant, thereby generating a constant envelope waveform as shown in the following formula (1):

[0069] wherein, is a phase trajectory, E is a symbol energy, T is a symbol duration, f0 is a carrier frequency, is a carrier initial phase. The phase trajectory It can be understood that the carrier phase function carrying bit information at t time is as shown in the following formula (2):

[0070] In formula (2), h is a modulation index (or modulation depth), a iwhere g(t) is a frequency pulse shaping function, and for the ith symbol to be transmitted, is a phase pulse shaping function as shown in equation (3) below:

[0071] where a = [a1, a2, a3, a4, …] represents a symbol vector to be transmitted. Assuming that the modulation order is 2, the length of a is N, and each element in a corresponds to each bit in the bit sequence, and the mapping relationship between a and the bit sequence is not limited herein. The CPM baseband waveform at this time is a continuous signal, carrying N CPM symbols, each bit of the first bit sequence corresponding to a CPM symbol, and the N CPM symbols being continuous. Sampling the CPM baseband waveform can be stored in a digital system. Assuming that S samples are taken for each CPM symbol, the sampling interval is T / S, and a time-domain modulation symbol sequence of length n1 is obtained where n = 0, 1, 2, …, NS, and n1 = NS.

[0072] In another example, the first communication apparatus can perform time-domain constant envelope modulation on the first bit sequence based on the LFM to obtain a time-domain modulation symbol sequence of length n1. The LFM generates a constant envelope waveform as shown in equation (4) below:

[0073] where A is the amplitude, fc is the carrier frequency, F represents the frequency modulation slope of the LFM, 1 / T represents the information bandwidth, and represents the initial phase of the carrier. Similar to the CPM described above, the LFM baseband waveform is a continuous signal, containing N LFM symbols, each bit of the first bit sequence corresponding to an LFM symbol, and the N LFM symbols being continuous. Sampling the LFM baseband waveform can be stored in a digital system. Assuming that S samples are taken for each LFM symbol, the sampling interval is T / S, and a time-domain modulation symbol sequence of length n1 is obtained where n = 0, 1, 2, …, NS, and n1 = NS.

[0074] Referring to FIG. 8, the first communication apparatus performs DFT on the time-domain modulation symbol sequence to realize conversion of the time-domain symbol to the frequency-domain symbol, and obtains a transmission modulation symbol sequence. The transmission modulation symbol sequence can include the n1 transmission modulation symbols described above, or the length of the transmission modulation symbol sequence is n1.

[0075] Referring to FIG. 8, the first communication apparatus can perform constellation mapping on the second data bit sequence to obtain a data modulation symbol sequence. For example, performing constellation mapping on a second data bit sequence of length M bits to obtain a data modulation symbol sequence of length n2, or the data modulation symbol sequence obtained after constellation mapping includes n2 data modulation symbols. The application does not limit the manner of constellation mapping and the constellation diagram.

[0076] Referring to FIG. 8, the first communication device can perform symbol mapping on the modulated energy modulation symbol sequence and the data modulation symbol sequence, such as mapping n1 energy modulation symbols and n2 data modulation symbols to different REs of the first resource block.

[0077] Referring to FIG. 8, the first communication device can perform time domain OFDM symbol generation based on the mapping result, such as performing IFFT on subcarriers carrying energy modulation symbols or data modulation symbols to obtain at least one OFDM symbol. The present application does not limit the symbol mapping scheme. As an example, in order to improve the energy efficiency, the first communication device can map n1 energy modulation symbols on REs that are frequency domain continuous in the first resource block. For example, assuming that each OFDM symbol occupies K subcarriers in the first resource block, and K is greater than or equal to n1, the first communication device can map n1 energy modulation symbols to the i-th to the i+n1-1-th subcarriers; in the case where K is less than n1, the first communication device can map n1 energy modulation symbols to REs that are frequency domain continuous corresponding to multiple OFDM symbols. Example one, in the generated at least one OFDM symbol, at least one OFDM symbol has both energy subcarriers and data subcarriers; example two, in the generated at least one OFDM symbol, at least one OFDM symbol occupies subcarriers that are all energy subcarriers, and at least one OFDM symbol occupies subcarriers that are all data subcarriers. It should be understood that the same subcarrier can carry different signals in different OFDM symbols, such as a subcarrier used to carry energy signals in one OFDM symbol being used to carry data signals in another OFDM symbol. It can be understood that the above mapping method is an example and is not a limiting description, for example, n1 energy modulation symbols and n2 data modulation symbols can also be mapped in a comb-like manner, and n1 energy modulation symbols and n2 data modulation symbols can be interleaved with each other, such as being mapped to the i-th to the i+n1+n2-1-th subcarriers in the order of energy modulation symbol, data modulation symbol, and energy modulation symbol.

[0078] It should be noted that when reordering the intermediate result of the IFFT operation, the tail signal of the OFDM symbol is often copied to the head by using the cyclic prefix to reduce complex operations and improve performance, therefore, the first communication device mapping n1 energy modulation symbols on REs at both ends of the frequency domain in the first resource block is also regarded as "n1 energy modulation symbols are mapped on REs that are frequency domain continuous in the first resource block". For example, in the first resource block, each OFDM symbol occupies K subcarriers, the first communication device can map the last 5 energy modulation symbols of the 10 energy modulation symbols to the 1st to 5th subcarriers, and the first 5 energy modulation symbols to the K-4th to Kth subcarriers.

[0079] For example, in the O-RAN system, the CU in the first communication device informs the DU of the energy transfer service duration, the DU determines the number of energy transfer subcarriers and the number of data subcarriers, and generates at least one OFDM symbol according to the above example.

[0080] In S220, the first communication device transmits the n1 energy transfer modulation symbols and the n2 data modulation symbols to the second communication device through the first resource block. Correspondingly, the second communication device receives the n1 energy transfer modulation symbols and the n2 data modulation symbols in the first resource block.

[0081] Referring to FIG. 8, the at least one OFDM symbol in the first resource block generated by the first communication device carries the n1 energy transfer modulation symbols and the n2 data modulation symbols, and then the first communication device can perform up-conversion on the at least one OFDM symbol, and then transmit the at least one OFDM symbol through an antenna, that is, realize the transmission of the n1 energy transfer modulation symbols and the n2 data modulation symbols. Optionally, before performing up-conversion on the at least one OFDM symbol, the first communication device can also include processing such as parallel-to-serial conversion, windowing, and cyclic prefix addition on the generated OFDM symbol.

[0082] It can be understood that when the second communication device is a charging terminal, it can collect electromagnetic waves from the n1 energy transfer modulation symbols; when the second communication device is a communication terminal, it can perform S230 in FIG. 7. Since S230 is only performed when the second communication device is a communication terminal, it is not performed when the second communication device is a charging terminal, and therefore is represented by a dashed line.

[0083] For example, in the O-RAN system, the DU in the first communication device transmits the at least one OFDM symbol to the RU, and the RU modulates the at least one OFDM symbol on the corresponding frequency point through up-conversion and transmits it.

[0084] In S230, the second communication device demodulates the n2 data modulation symbols. The process of receiving and demodulating the n2 data modulation symbols by the second communication device can be the inverse process of the above modulation and transmission of the at least one OFDM symbol. For example, the second communication device can perform down-conversion on the received signal, and extract the n2 data modulation symbols from the received at least one OFDM symbol for demodulation. Referring to FIG. 9, the second communication device receives the at least one OFDM symbol from the first communication device through an antenna, and then performs symbol de-mapping on the at least one OFDM symbol, extracts a data modulation symbol sequence, and then performs constellation de-mapping on the data modulation symbol sequence obtained by de-mapping to obtain a second data bit sequence, to realize data transmission.

[0085] Therefore, in the embodiments of the present application, the energy-carrying signal in the data-and-energy co-transmission signal is an energy-carrying signal obtained through time-domain constant envelope modulation. In the time domain, the energy-carrying signal obtained through constant envelope modulation is superimposed on the data signal, so as to realize low PAPR; in the frequency domain, part of the subcarriers carry non-random energy-carrying modulation symbols, and the other part of the subcarriers carry data modulation symbols, thereby forming an OFDM symbol with low PAPR. Thus, the PAPR of the wireless signal in the data-and-energy co-transmission process is reduced, and the impact on the communication quality is reduced. For example, compared with increasing the power of the energy-carrying subcarriers, the present application does not affect the signal-to-interference ratio of the data subcarriers.

[0086] FIG. 10 is an interaction flow diagram of a data-and-energy co-transmission method provided by an embodiment of the present application.

[0087] On the basis of the above-described embodiments, the first communication device and the second communication device can also agree on the positions of the data subcarriers and / or the positions of the energy-carrying subcarriers, so that the second communication device can accurately extract the data modulation symbols from the received at least one OFDM symbol. The positions of the data subcarriers and / or the positions of the energy-carrying subcarriers can be preset, such as being agreed in a protocol, or the positions of the data subcarriers and / or the positions of the energy-carrying subcarriers can be indicated by the first communication device. In this case, the method can include S240 shown in FIG. 10.

[0088] In S240, the first communication device sends second indication information to the second communication device, the second indication information indicating the positions of the energy-carrying subcarriers, and / or the second indication information indicating the positions of the data subcarriers. Optionally, the second indication information can indicate the positions of the subcarriers by indicating the indexes or frequency domain ranges of the subcarriers. The first communication device can extract the n2 data modulation symbols from the received at least one OFDM symbol based on the second indication information.

[0089] For example, because the signals carried by the same subcarrier in the first resource block can be different in different OFDM symbols, the second indication information can indicate the positions of the subcarriers for each of the transmitted at least one OFDM symbol, such as indicating the positions of the energy-carrying subcarriers and / or the positions of the data subcarriers in each of the transmitted at least one OFDM symbol.

[0090] As mentioned above, in the presence of frequency offset, the greater the power of the subcarriers carrying the power transfer modulation symbols, the greater the interference to the data modulation symbols carried on the adjacent subcarriers. It can be understood that, in the case that the total amount of power allocated to the n1 subcarriers carrying n1 power transfer modulation symbols remains unchanged, the greater the number of power transfer modulation symbols, the lower the power allocated to each subcarrier carrying the power transfer modulation symbols. See FIG. 11. Therefore, the greater the number of power transfer modulation symbols, the more conducive to improving communication quality. Based on this, the first communication device can adjust the power of each power transfer subcarrier by adjusting the number of power transfer modulation symbols, thereby avoiding ICI. In some embodiments, S250 to S270 in FIG. 10 can be included.

[0091] In S250, the second communication device determines ICI information based on the first signal, which is mapped to different REs of the first resource block by the n1 power transfer modulation symbols and the n2 data modulation symbols. The first signal can include at least one OFDM symbol. For example, the second communication device can measure the ICI of each data subcarrier in each OFDM symbol. In order to improve processing efficiency, the second communication device can measure the ICI for the data subcarriers adjacent to the power transfer subcarriers in each OFDM symbol.

[0092] As a first example, the ICI information determined by the second communication device can include the measured ICI of each data subcarrier. As a second example, the ICI information determined by the second communication device can be determined based on the measured ICI of each data subcarrier, for example, the ICI information can include the mean, variance, etc. of the measured ICI of each data subcarrier.

[0093] In the above first example, the ICI information can include the value of the measured ICI of each data subcarrier, or the ICI information can include the ICI level of the measured ICI of each data subcarrier. The first communication device and the second communication device can agree on a plurality of ICI levels in advance, which can be agreed by a protocol or synchronized by signaling interaction between the first communication device and the second communication device. The second communication device can find the closest ICI level according to the value of the ICI of each data subcarrier.

[0094] In the above second example, the ICI information can include a value calculated based on the measured ICI of each data subcarrier, or the ICI information can include an ICI level corresponding to the value calculated based on the measured ICI of each data subcarrier.

[0095] The present application does not limit the relationship between the ICI level and the value of the ICI, for example, the greater the value of the ICI, the higher or lower the level of the ICI.

[0096] In S260, the second communication device sends the first indication information to the first communication device, the first indication information indicating the ICI information. Correspondingly, the first communication device receives the first indication information from the second communication device. Further, the first communication device can determine the number of the energy-carrying modulation symbols in the second resource block based on the ICI information when transmitting the next energy-carrying signal (e.g., the second signal). The second resource block can occupy the same frequency domain resource as the first resource block.

[0097] As an example, different ICI information can correspond to different numbers of energy-carrying modulation symbols, and the first communication device can determine the corresponding number of energy-carrying modulation symbols according to the ICI information, e.g., the first communication device determines that the ICI information of the first signal corresponds to the number n3 of energy-carrying modulation symbols based on the corresponding relationship, and n3 is a positive integer. As another example, different ICI information can correspond to different adjustment amounts, and the first communication device can determine the corresponding adjustment amount according to the ICI information, and then adjust the number of energy-carrying modulation symbols from n1 to n3 according to the adjustment amount.

[0098] Optionally, the number of data modulation symbols can be less than or equal to the number of remaining REs in the second resource block excluding the REs carrying the n3 energy-carrying modulation symbols. Optionally, the first communication device can determine the number n4 of data modulation symbols in the second resource block when transmitting the second signal based on the ICI information, and n4 is a positive integer. The implementation can refer to the description of determining the number of energy-carrying modulation symbols above, and will not be described again for brevity.

[0099] It can be understood that the ICI is positively related to the above n3, that is, the larger the value of ICI is, the larger the value of n3 is; the ICI can also be negatively related to the above n4, that is, the larger the value of ICI is, the smaller the value of n4 is.

[0100] For example, in an O-RAN system, the RU in the first communication device receives the first indication information, performs frequency down-conversion, and sends it to the DU. The DU demodulates the baseband signal and obtains the ICI information, and then adjusts the number of energy-carrying subcarriers, and then generates at least one OFDM symbol carrying n3 energy-carrying modulation symbols and n4 data modulation symbols.

[0101] In S270, the first communication apparatus transmits the n3 power transfer modulation symbols and the n4 data modulation symbols via the second resource block. Correspondingly, the second communication apparatus receives the n3 power transfer modulation symbols and the n4 data modulation symbols from the first communication apparatus via the second resource block. It can be understood that the implementation of the first communication apparatus transmitting the n3 power transfer modulation symbols and the n4 data modulation symbols via the second resource block is similar to the implementation of the first communication apparatus transmitting the n1 power transfer modulation symbols and the n2 data modulation symbols via the first resource block in S220, and the n3 power transfer modulation symbols have the same or similar modulation and mapping manner as the n1 power transfer modulation symbols, and the n4 data modulation symbols have the same or similar modulation and mapping manner as the n2 data modulation symbols. For brevity, details are not described herein.

[0102] It can be understood that when the second communication apparatus is a power charging terminal, the second communication apparatus can collect electromagnetic waves from the n3 power transfer modulation symbols; when the second communication apparatus is a communication terminal, the second communication apparatus can perform S280 in FIG. 10. Since S280 is performed only when the second communication apparatus is a communication terminal, S280 is not performed when the second communication apparatus is a power charging terminal. Therefore, S280 is represented by a dashed line.

[0103] For example, in an O-RAN system, the DU in the first communication apparatus transmits at least one OFDM symbol to the RU, and the RU modulates and transmits the at least one OFDM symbol at a corresponding frequency point by frequency up-conversion.

[0104] In S280, the second communication apparatus demodulates the n4 data modulation symbols. The implementation of demodulating the n4 data modulation symbols is the same as or similar to the implementation of demodulating the n2 data modulation symbols in S230. For brevity, details are not described herein.

[0105] Optionally, before S270 is performed, the first communication apparatus can further transmit third indication information to the second communication apparatus. The third indication information is for the second signal, and indicates the positions of the power transfer subcarriers and / or the positions of the data subcarriers. In this way, the second communication apparatus can extract the n4 data modulation symbols from the second signal based on the third indication information, and then demodulate the n4 data modulation symbols to complete the reception of the communication data.

[0106] In some embodiments, the second communication apparatus can perform ICI measurement on the wireless signal for simultaneous power and communication according to a preset period. In other embodiments, the second communication apparatus can report the ICI information in response to a request. For example, the first communication apparatus can transmit a request information to the second communication apparatus, and the second communication apparatus can determine and report the ICI information in response to the received request information. In this way, processing overhead can be saved.

[0107] It should be understood that, in order to realize the functions in the above embodiments, the network device and the terminal include hardware structures and / or software modules corresponding to the functions. Those skilled in the art should easily understand that, in combination with the units and method steps of the examples described in the embodiments disclosed in the present application, the present application can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is realized in the form of hardware or computer software driving hardware depends on the specific application scenarios and design constraints of the technical solutions.

[0108] FIG. 12 and FIG. 14 are structural schematic diagrams of possible communication apparatuses provided by the embodiments of the present application. The communication apparatuses can be used to realize the functions of the first communication apparatus and the second communication apparatus in the above method embodiments, and thus can also realize the beneficial effects possessed by the above method embodiments. In the embodiments of the present application, the communication apparatus can be the terminal 120 as shown in FIG. 1, or the RAN node 110 as shown in FIG. 1, or a module (such as a chip) applied to a terminal device or a network device.

[0109] As shown in FIG. 12, the communication apparatus 300 includes a processing module 310 and a transceiver module 320. The communication apparatus 300 is used to realize the functions of the first communication apparatus and the second communication apparatus in any of the above method embodiments.

[0110] When the communication apparatus 400 is used to realize the functions of the first communication apparatus in the method embodiments, the processing module 310 can map the n1 energy transfer modulation symbols and the n2 data modulation symbols to different resource elements REs of the first resource block, the energy transfer modulation symbols being obtained based on time domain constant envelope modulation; and the transceiver module 320 can transmit the n1 energy transfer modulation symbols and the n2 data modulation symbols through the first resource block.

[0111] In some embodiments, the transceiver module 320 is further used to receive first indication information, the first indication information indicating ICI information; and the transceiver module 330 is further used to transmit n3 energy transfer modulation symbols and n4 data modulation symbols through the second resource block, n3 and / or n4 being determined according to the ICI information.

[0112] When the communication apparatus 400 is used to realize the functions of the second communication apparatus in the method embodiments, the transceiver module 320 can receive the n1 energy transfer modulation symbols and the n2 data modulation symbols on the first resource block, the energy transfer modulation symbols being obtained based on time domain constant envelope modulation; and the processing module 310 can demodulate the n2 data modulation symbols.

[0113] In some embodiments, the processing module 310 is further configured to determine ICI information based on the first signal, the first signal being mapped to different REs of the first resource block by the n1 power transfer modulation symbols and the n2 data modulation symbols; and the transceiver module 320 is configured to send the first indication information, the first indication information indicating the ICI information.

[0114] For more details of the processing module 310 and the transceiver module 320, please refer to the related description in the above method embodiments.

[0115] As shown in FIG. 13, the communication apparatus 400 includes a processor 410 and an interface circuit 420. The processor 410 and the interface circuit 420 are coupled to each other. It can be understood that the interface circuit 420 can be a transceiver or an input / output interface. Optionally, the communication apparatus 400 can further include a memory 430, configured to store instructions executed by the processor 410 or store input data required by the processor 410 to execute instructions or store data generated after the processor 410 executes instructions. Sometimes, the interface circuit 420 can also be understood as a part of the processor 410, and the communication apparatus 400 includes the processor 410 at this time.

[0116] When the communication apparatus 400 is configured to implement the method in the above embodiments, the processor 410 is configured to implement the functions of the processing module 410, and the interface circuit 420 is configured to implement the functions of the transceiver module 420.

[0117] When the above communication apparatus is a terminal chip, the terminal chip implements the functions of the terminal device in the above method embodiments. The terminal chip receives information from a network device, which can be understood as that the information is first received by other modules (such as a radio frequency module or an antenna) in the terminal device, and then transmitted to the terminal chip by these modules. The terminal chip sends information to the network device, which can be understood as that the information is first sent to other modules (such as a radio frequency module or an antenna) in the terminal device, and then transmitted to the network device by these modules.

[0118] When the above communication apparatus is a network device chip, the chip implements the functions of the network device in the above method embodiments. The chip receives information from a terminal device, which can be understood as that the information is first received by other modules (such as a radio frequency module or an antenna) in the network device, and then transmitted to the network device chip by these modules. The chip sends information to the terminal device, which can be understood as that the information is first sent to other modules (such as a radio frequency module or an antenna) in the network device, and then transmitted to the terminal device by these modules.

[0119] Figure 14 is a structural schematic diagram of a network device provided by an embodiment of the present application, for example, a structural schematic diagram of a base station. The base station 500 can be applied to the system shown in Figure 1 to perform the functions of the network device in the above method embodiments. As shown in the figure, the base station 500 can include one or more of the following: one or more (DU+RU) 510, one or more CUs 520. The CU 520 can communicate with the next-generation core network. The DU can include at least one antenna 511, at least one radio frequency unit 512, at least one processor 513, and at least one memory 514. The DU part is mainly used for the transceiving of radio frequency signals and the conversion between radio frequency signals and baseband signals, as well as part of the baseband processing. The CU 520 can include at least one processor 522 and at least one memory 521. The CU 520 and the DU can communicate through an interface. The control plane (CP) interface can be Fs-C, such as F1-C, and the user plane (UP) interface can be Fs-U, such as F1-U. The DU and the RU can cooperate to jointly implement the functions of the physical (PHY) layer. One DU can be connected to one or more RUs. The functions of the DU and the RU can be configured in multiple ways according to design. For example, the DU is configured to implement baseband functions, and the RU is configured to implement intermediate frequency functions. For another example, the DU is configured to implement high-level functions in the PHY layer, and the RU is configured to implement low-level functions in the PHY layer and radio frequency functions. The high-level functions in the PHY layer can include part of the functions of the PHY layer that are closer to the MAC layer, and the low-level functions in the PHY layer can include another part of the functions of the PHY layer that are closer to the intermediate frequency side.

[0120] The CU 520 is the control center of the base station, which can correspond to the processing unit in Figure 6 or the processor in Figure 7, and can also be referred to as a processing unit, and is mainly used to complete the baseband processing function. For example, the CU 520 can be used to control the base station to perform the operation processes of the network device in the above method embodiments.

[0121] In addition, the base station 500 can optionally include one or more radio frequency units (RUs), one or more DUs, and one or more CUs. The DU can include at least one processor 513 and at least one memory 514, the RU can include at least one antenna 511 and at least one radio frequency unit 512, and the CU can include at least one processor 522 and at least one memory 521.

[0122] In an example, the CU 520 can be composed of one or more boards, and the plurality of boards can jointly support a single access indicated wireless access network (e.g., a 5G network) or separately support wireless access networks of different access modes (e.g., an LTE network, a 5G network, or other networks). The memory 521 and the processor 522 can serve one or more boards. That is, the memory and the processor can be separately arranged on each board. Alternatively, the plurality of boards can share the same memory and the processor. In addition, each board can be further provided with necessary circuits. The DU can be composed of one or more boards, and the plurality of boards can jointly support a single access indicated wireless access network (e.g., a 5G network) or separately support wireless access networks of different access modes (e.g., an LTE network, a 5G network, or other networks). The memory 514 and the processor 513 can serve one or more boards. That is, the memory and the processor can be separately arranged on each board. Alternatively, the plurality of boards can share the same memory and the processor. In addition, each board can be further provided with necessary circuits.

[0123] It should be understood that the base station 500 shown in FIG. 14 is capable of implementing various processes in the method embodiments involving a network device. The operations and / or functions of various modules in the base station 500 are respectively configured to implement the corresponding processes in the above method embodiments. For details, reference can be made to the description in the above method embodiments, and detailed description is appropriately omitted here.

[0124] It should be understood that the base station 500 shown in FIG. 14 is only one possible architecture of a network device, and should not constitute any limitation to the present application. The methods provided by the present application can be applied to network devices of other architectures. For example, network devices containing a CU, a DU, and an AAU, etc. The present application does not limit the specific architecture of the network device.

[0125] It should be understood that FIG. 14 is only an example and not a limitation, and the network device can not rely on the structure shown in FIG. 14. For example, the network device can also include an AAU, and can also include a CU and / or a DU, or the network device can also include a BBU, and can also include an adaptive radio unit (ARU). The present application does not limit this.

[0126] The above CU and / or DU can be used to perform the actions described in the foregoing method embodiments and implemented internally by the network device, and the AAU can be used to perform the actions described in the foregoing method embodiments and sent by the network device to the terminal or received by the terminal from the network device. For details, reference can be made to the description in the foregoing method embodiments, and detailed description is not repeated here.

[0127] In the present application, the sending of information from entity A to entity B can be directly from A to B, or indirectly from A to B via other entities. Similarly, the receiving of information from entity A by entity B can be directly from A by B, or indirectly from A by B via other entities. The entities A and B can be RAN nodes or terminals, or modules within RAN nodes or terminals. The sending and receiving of information can be the information exchange between RAN nodes and terminals, e.g., the information exchange between base stations and terminals; the sending and receiving of information can also be the information exchange between two RAN nodes, e.g., the information exchange between a CU and a DU; the sending and receiving of information can also be the information exchange between different modules within one apparatus, e.g., the information exchange between a terminal chip and other modules of the terminal, or the information exchange between a base station chip and other modules of the base station.

[0128] It can be understood that the processor in the embodiments of the present application can be a central processing unit, and can also be other general-purpose processors, digital signal processors, application-specific integrated circuits, field programmable gate arrays or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor can be a microprocessor, or any conventional processor.

[0129] The method steps in the embodiments of the present application can be implemented in hardware, or in software instructions executable by a processor. The software instructions can be composed of corresponding software modules, which can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a mobile hard disk, a compact disc read-only memory (CD-ROM) or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium, and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an application-specific integrated circuit (ASIC). In addition, the ASIC can be located in a base station or a terminal. The processor and the storage medium can also exist as discrete components in the base station or the terminal.

[0130] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer programs or instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments are performed. The computer can be a general purpose computer, a special purpose computer, a computer network, a network device, a terminal device or other programmable apparatus. The computer programs or instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer programs or instructions can be transferred from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless manner. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center and the like integrated with one or more available media. The available media can be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; or an optical medium, such as a digital video disc; or a semiconductor medium, such as a solid state disk. The computer readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

[0131] In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0132] In the embodiments of the present application, "when", "if" and "whether" refer to the objective situation that the device will make corresponding processing, not the time limit, and also do not require the device to have a judgment action when it is implemented, nor does it mean that there are other limitations.

[0133] In the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In the textual description of the present application, the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship; in the formula of the present application, the character " / ", indicates that the front and rear associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0134] It can be understood that various digital numbers involved in the embodiments of the present application are only distinguished for convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the serial number of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic.

Claims

1. A communication method for simultaneous data transmission, characterized in that, The method comprises: mapping n1 energy transfer modulation symbols and n2 data modulation symbols to different resource elements (REs) of a first resource block, n1 being a positive integer, n2 being a positive integer, the energy transfer modulation symbols being obtained based on time domain constant envelope modulation; transmitting the n1 energy transfer modulation symbols and the n2 data modulation symbols through the first resource block.

2. The method of claim 1, wherein, The n1 energy transfer modulation symbols are obtained by discrete Fourier transform (DFT) of n1 time domain modulation symbols.

3. The method according to claim 1 or 2, characterized in that, The n1 energy transfer modulation symbols are mapped on REs that are continuous in frequency domain in the first resource block.

4. The method according to any one of claims 1 to 3, characterized in that, Further comprising: receiving first indication information, the first indication information indicating inter-carrier interference (ICI) information; transmitting n3 energy transfer modulation symbols and n4 data modulation symbols through a second resource block, n3 being a positive integer, n4 being a positive integer, the n3 and / or the n4 being determined according to the ICI information.

5. The method according to any one of claims 1 to 4, characterized in that, In one OFDM symbol of the first resource block, subcarriers occupied by the energy transfer modulation symbols and subcarriers occupied by the data modulation symbols do not overlap.

6. A power and data co-transmission communication method, characterized by, The method comprises: receiving n1 energy transfer modulation symbols and n2 data modulation symbols on a first resource block, n1 being a positive integer, n2 being a positive integer, the energy transfer modulation symbols being obtained based on time domain constant envelope modulation; demodulating the n2 data modulation symbols.

7. The method of claim 6, wherein, The n1 energy transfer modulation symbols are obtained by discrete Fourier transform (DFT) of n1 time domain modulation symbols.

8. The method according to claim 6 or 7, characterized in that, The n1 energy transfer modulation symbols are mapped on REs that are continuous in frequency domain in the first resource block.

9. The method according to any one of claims 6 to 8, characterized in that, Further comprising: determining ICI information based on a first signal, the first signal being obtained by mapping the n1 energy transfer modulation symbols and the n2 data modulation symbols to different REs of the first resource block; transmitting first indication information, the first indication information indicating the ICI information.

10. The method according to any one of claims 6 to 9, characterized in that, In one OFDM symbol of the first resource block, subcarriers occupied by the energy transfer modulation symbols and subcarriers occupied by the data modulation symbols do not overlap.

11. A communications device, characterized by Comprising: a module for performing the method of any one of claims 1 to 5, or a module for performing the method of any one of claims 6 to 10.

12. A communications device, characterized by Comprising: a processor for performing the method of any one of claims 1 to 10 by running a computer program or by a logic circuit.

13. A communication system, characterized by Comprising: a first communication device for performing the method of any one of claims 1 to 5, and a second communication device for performing the method of any one of claims 6 to 10.

14. A computer readable storage medium characterized by: a computer program product for storing computer program instructions that, when executed by a communication device, cause the communication device to perform the method of any one of claims 1 to 10.

15. A computer program product, characterised in that, a computer program product for storing computer program instructions that, when executed by a communication device, cause the communication device to perform the method of any one of claims 1 to 10.

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