Signal transmission method and apparatus, storage medium, and program product

Abstract

This disclosure provides a signal transmission method, apparatus, storage medium, and program product, relating to the field of communication technology, for reducing the transmission resource overhead of a probe reference signal. The method is applied to a first node and includes: receiving a reference signal and a data signal on a first resource element; the modulation mapping mode corresponding to the reference signal and / or the data signal is determined by modulation control information.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a signal transmission method, apparatus, storage medium, and program product. Background Technology

[0002] Data transmission modes based on non-orthogonal or superimposed pilots can reduce pilot overhead. In this mode, the reference signal (i.e., the pilot) and the data signal are mapped onto the same or partially identical transmission resources. However, mutual interference can occur between the reference signal and the data signal transmitted on the same transmission resources, reducing channel estimation accuracy and data demodulation performance. On the one hand, interference from the data signal to the reference signal affects the accuracy of channel estimation; on the other hand, the reference signal can also interfere with the data signal, affecting the correct reception of the data signal. Summary of the Invention

[0003] This disclosure provides a signal transmission method, apparatus, storage medium, and program product for reducing interference between reference signals and data signals.

[0004] To achieve the above objectives, the present disclosure adopts the following technical solution.

[0005] Firstly, a signal transmission method is provided, applied to a first node, comprising:

[0006] Receive reference signals and data signals from the first resource element;

[0007] The modulation mapping method corresponding to the reference signal and / or data signal is determined by the modulation control information.

[0008] Secondly, a signal transmission method is provided, applied to a second node, including:

[0009] Send reference signals and data signals on the first resource element;

[0010] The modulation mapping method corresponding to the reference signal and / or data signal is determined by the modulation control information.

[0011] Thirdly, a communication device is provided for use in a first node, comprising:

[0012] The receiving unit is used to receive reference signals and data signals on the first resource element;

[0013] The modulation mapping method corresponding to the reference signal and / or data signal is determined by the modulation control information.

[0014] Fourthly, a communication device is provided for use in a second node, comprising:

[0015] A transmitting unit is used to transmit reference signals and data signals on the first resource element;

[0016] The modulation mapping method corresponding to the reference signal and / or data signal is determined by the modulation control information.

[0017] Fifthly, a communication device is provided, comprising: a processor and a memory; the memory storing processor-executable instructions; when the processor is configured to execute the instructions, causing the communication device to implement the method provided in the first or second aspect above.

[0018] In a sixth aspect, a computer-readable storage medium is provided that stores computer instructions, which, when executed on a computer, cause the computer to perform the methods provided in the first or second aspect.

[0019] In a seventh aspect, a computer program product comprising computer instructions is provided, which, when executed on a computer, causes the computer to perform the method provided in the first or second aspect described above.

[0020] In this embodiment, the first node receives a reference signal and a data signal from a first resource element. The modulation mapping scheme corresponding to the reference signal and / or the data signal is determined by modulation control information. Thus, by using the modulation mapping scheme determined by the modulation control information, the modulation schemes of the reference signal and the data signal can be flexibly configured, thereby achieving separation and optimization of the reference signal and data signal in terms of signal space characteristics. This helps reduce mutual interference between the reference signal and the data signal, improves channel estimation accuracy, and enhances data demodulation performance. Attached Figure Description

[0021] The accompanying drawings are provided to further understand the technical solutions of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the technical solutions of this disclosure and do not constitute a limitation on the technical solutions of this disclosure.

[0022] Figure 1 This is a schematic diagram of the structure of a communication system provided in an embodiment of the present disclosure;

[0023] Figure 2 A schematic flowchart of a signal transmission method provided in an embodiment of this disclosure;

[0024] Figure 3 A schematic flowchart illustrating another signal transmission method provided in an embodiment of this disclosure;

[0025] Figure 4 This is a schematic diagram of the composition of a communication device provided in an embodiment of the present disclosure;

[0026] Figure 5A schematic diagram illustrating the composition of another communication device provided in an embodiment of this disclosure;

[0027] Figure 6 This is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure. Detailed Implementation

[0028] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0029] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and other forms such as the third-person singular "comprises" and the present participle "comprising" are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0031] The term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three cases: A exists alone, A and B exist simultaneously, and B exists alone.

[0032] In this disclosure, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0033] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0034] With the rapid development of wireless communication systems towards fifth-generation mobile communication systems (5G) / sixth-generation mobile communication systems (6G), the Internet of Things (IoT), and vehicle-to-everything (V2X) scenarios, problems such as spectrum resource scarcity, dynamic changes in channel environment, and latency sensitivity are becoming increasingly prominent.

[0035] Traditional pilot techniques (such as time-division or frequency-division multiplexing-based pilots) require dedicated time-frequency resources for channel estimation, leading to decreased spectral efficiency and resource waste, especially in high-speed mobile, short-frame transmission, or large-scale access scenarios.

[0036] For example, in ultra-reliable low-latency communication (URLLC), the fixed time slots occupied by pilots significantly increase end-to-end latency; in massively multi-input multiple-output (MIMO) systems, pilot overhead increases linearly with the number of antennas, severely limiting system capacity.

[0037] Data transmission modes based on non-orthogonal or superimposed pilots can reduce pilot overhead. In non-orthogonal or superimposed pilot data transmission modes, the time-frequency resources of the data channels corresponding to the reference signal (i.e., pilot) and the data signal partially or completely overlap, that is, the reference signal and the data signal are mapped on the same or partially the same transmission resources.

[0038] In a data transmission mode based on non-orthogonal pilots, the reference signal and data signal are transmitted on the same transmission resources. Under an appropriate power control ratio, the receiving node can directly or indirectly generate channel information based on the received signal to complete data reception. The power control ratio is defined as the ratio of the transmission power of the reference signal to that of the data signal.

[0039] However, if the reference signal and data signal are mapped onto the same transmission resources, mutual interference will occur between them, reducing the accuracy of channel estimation and data demodulation performance. On the one hand, the interference of the data signal on the reference signal will affect the accuracy of channel estimation; on the other hand, the reference signal will also interfere with the data signal, affecting the correct reception of the data signal.

[0040] Based on this, this disclosure proposes a signal transmission method in which a first node receives a reference signal and a data signal on a first resource element. The modulation mapping scheme corresponding to the reference signal and / or the data signal is determined by modulation control information. In this way, by using the modulation mapping scheme determined by the modulation control information, the modulation schemes of the reference signal and the data signal can be flexibly configured, thereby achieving separation and optimization of the reference signal and the data signal in terms of signal space characteristics. This helps to reduce mutual interference between the reference signal and the data signal, improve channel estimation accuracy, and enhance data demodulation performance.

[0041] The embodiments of this disclosure will now be described in conjunction with the accompanying drawings.

[0042] The technical solutions provided in this disclosure can be applied to various mobile communication networks, such as 5G NR mobile communication networks, future mobile communication networks (e.g., 6G wireless communication systems), or multiple communication convergence systems, etc. This disclosure does not limit them.

[0043] 5G and future mobile communication networks can include network-side devices (e.g., including but not limited to base stations) and receiving-side devices (e.g., including but not limited to terminals). It should be understood that, in this example, for instance, in the downlink, the first node (also referred to as the first communication node device, the first communication node) can be a terminal-side device, and the second node (also referred to as the second communication node device, the second communication node) can be a base station-side device. In some examples, such as in the uplink, the first node can also be a base station-side device, and the second node can also be a terminal-side device. In some examples, such as in device-to-device communication between the two communication nodes, both the first and second communication nodes can be either base stations or terminals. Therefore, whether the first and second nodes are base stations or terminals needs to be determined based on the context.

[0044] Figure 1 The diagram shown is a structural schematic of a communication system provided in an embodiment of this disclosure. Figure 1 As shown, the communication system includes, but is not limited to, a first node 110 and a second node 120. The first node 110 and the second node 120 can transmit and receive wireless signals and perform related interactions.

[0045] In a wireless communication scenario, the first node 110 and the second node 120 communicate via a wireless channel. For example, the first node 110 may be a terminal, and the second node 120 a base station; the terminal and the base station communicate via a wireless channel. Alternatively, the first node 110 may be a terminal, and the second node 120 a wireless router; the wireless router and the terminal communicate via a wireless channel. Another example is that the first node 110 may be a first base station, and the second node 120 a second base station; the first base station and the second base station communicate via a wireless channel. Yet another example is that the first node 110 may be a first terminal, and the second node 120 a second terminal; the first terminal and the second terminal communicate via a wireless channel. Finally, the first node 110 may be a repeater, and the second node 120 a base station; the base station and the repeater communicate via a wireless channel. Finally, the first node 110 may be a terminal, and the second node 120 a repeater; the repeater and the terminal communicate via a wireless channel. For example, node 110 is a first repeater, and node 120 is a second repeater; the first repeater and the second repeater communicate via a wireless channel. Alternatively, node 110 can be a base station, and node 120 a satellite; the satellite and the base station communicate via a wireless channel. Another example: node 110 can be a satellite, and node 120 a base station; the base station and the satellite communicate via a wireless channel. Yet another example: node 110 can be a terminal, and node 120 a satellite; the satellite and the terminal communicate via a wireless channel. Again, node 110 can be a satellite, and node 120 a terminal; the terminal and the satellite communicate via a wireless channel. Finally, node 110 can be ground equipment, and node 120 can be an aircraft; the aircraft and the ground equipment communicate via a wireless channel. Finally, node 110 can be a first aircraft, and node 120 a second aircraft; the first aircraft and the second aircraft communicate via a wireless channel.

[0046] In this disclosure, a terminal is a device with wireless transceiver capabilities that can be deployed on land, including indoors or outdoors; on water (such as on ships); and in the air (such as on airplanes, balloons, and satellites). Terminals can be mobile phones, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, wireless terminals in self-driving vehicles, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and so on. The embodiments of this disclosure do not limit the application scenarios. A terminal may also be referred to as a user, user equipment, access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication device, UE agent, or UE device, etc. The embodiments of this disclosure are not limited to these terms.

[0047] In this disclosure, the base station can be a base station in Long Term Evolution (LTE), Long Term Evolution Advanced (LTEA), or an evolved Node B (eNB or eNodeB), a base station device in a 5G network, or a base station in a future communication system (such as 6G). The base station can include various macro base stations, micro base stations, home base stations, wireless remote extensions, reconfigurable intelligent surfaces (RISs), routers, wireless fidelity (WIFI) devices, or various network-side devices such as primary cells and secondary cells.

[0048] It should be understood that Figure 1 This is an exemplary structural diagram. Figure 1 The communication system shown includes an unlimited number of devices; for example, the number of first nodes and second nodes is unlimited. Furthermore, except... Figure 1 In addition to the equipment shown, Figure 1 The communication system shown may also include other devices, which are not limited thereto.

[0049] Next, as Figure 2 As shown, this disclosure provides a signal transmission method, which is applied to a first node, the first node being one of the above-described methods. Figure 1 The method may include the following step S201, as shown in the first node 110.

[0050] S201, Receive reference signal and data signal on the first resource element; the modulation mapping mode corresponding to the reference signal and / or data signal is determined by modulation control information.

[0051] It should be understood that a resource element (RE) is a basic time-frequency unit, corresponding to a subcarrier within one orthogonal frequency division multiplexing (OFDM) symbol period, and is the smallest unit in the time-frequency grid. REs are used to define how reference signals and data signals are organized and allocated at the physical layer.

[0052] Receiving reference and data signals on the first resource element indicates that reference and data signals exist simultaneously on the same time-frequency resource unit. The communication system employs a data transmission mode based on non-orthogonal or superimposed pilots to achieve superimposed transmission of reference and data signals on the same resource.

[0053] It should be noted that the second node may also have other names, such as receiving node, and this disclosure does not limit this.

[0054] In some embodiments, the reference signal may be a demodulation reference signal (DMRS), a phase tracking reference signal (PTRS), a channel state information reference signal (CSI-RS), or a sounding reference signal (SRS), etc.

[0055] In some embodiments, N set1 The reference signal of each port and N set2 The data signals of each port are mapped onto the first resource element, N set1 Less than or equal to N set2 .

[0056] Unless otherwise specified, N set1 and N set2These represent the total number of reference signal ports and the total number of data signal ports mapped onto all first resource elements contained in the transmission channel, respectively; a first resource element is a collective term for resource elements carrying reference signals and data signals; a first resource element may consist of one or more resource elements; a transmission channel contains one or more first resource elements.

[0057] In some embodiments, the N of the reference signal set1 Each port may be mapped to the same first resource element; or, the N reference signals... set1 A portion of the ports and the reference signal N set1 Another portion of the ports is mapped onto different first resource elements.

[0058] In some embodiments, N set2 The port index corresponding to each port is configured or indicated in the form of a reference signal port.

[0059] For example, if the antenna port signaling indicates N set2 = There are 2 reference signal port indices {0,2}, then the port index corresponding to the data signal is {0,2}.

[0060] Since each reference signal requires a certain amount of time-frequency resources, and the pilot signal and the data signal share the same spectrum resources, the number of ports for the reference signal is less than the number of ports for the data signal. This reduces the time-frequency resource usage of the reference signal, thereby reducing the interference of the reference signal to the data signal, simplifying the channel estimation process, and improving the data demodulation performance.

[0061] In some embodiments, modulation information is associated with a transmission mode, which may be a transmission mode based on non-orthogonal pilots.

[0062] The modulation control information includes at least one of the following: modulation map type indication, modulation and coding scheme, modulation scheme and / or modulation order used for each modulation map, parameters required for modulation map generation or construction, and corresponding value indications.

[0063] In some embodiments, modulation control information may be indicated by a single signaling (field), or modulation control information may be indicated by multiple signaling, each signaling indicating different information.

[0064] In some embodiments, the modulation mappings corresponding to the reference signal and the data signal are indicated by the same modulation control information, or the modulation mappings corresponding to the reference signal and the data signal are indicated by different modulation control information.

[0065] In some embodiments, if multiple transmission modes exist, including a transmission mode based on non-orthogonal pilots, only the transmission mode based on non-orthogonal pilots will be associated with modulation control information; other transmission modes will not be associated with corresponding modulation control information. That is, modulation control information for the reference signal will only exist in the transmission mode based on non-orthogonal pilots; in other transmission modes, the modulation control information for the reference signal will not exist, or will be a default value.

[0066] In some embodiments, if there are multiple transmission modes, including a transmission mode based on non-orthogonal pilots, each transmission mode is associated with modulation control information.

[0067] In some embodiments, modulation control information is used to indicate modulation mapping type; modulation mapping type includes a first type of modulation mapping method and / or a second type of modulation mapping method.

[0068] In this disclosure, the first type of modulation mapping method can also be called the first type of modulation mapping, and the second type of modulation mapping method can also be called the second type of modulation mapping. This disclosure does not limit it in this way.

[0069] In some embodiments, the first type of modulation mapping method is used to generate a complex sequence corresponding to the reference signal, and the second type of modulation mapping method is used to generate complex modulation symbols corresponding to the data signal; or...

[0070] The second type of modulation mapping method is used to generate the complex sequence corresponding to the reference signal, while the first type of modulation mapping method is used to generate the complex modulation symbol corresponding to the data signal.

[0071] The reference signal and the data signal use different modulation mapping methods, so the second node can identify or separate the reference signal and the data signal based on the difference in modulation method, thereby suppressing the mutual interference between the reference signal and the data signal and improving the estimation accuracy of the second node.

[0072] Modulation mapping, or modulation mapper, uses one or more modulation constellations or modulation schemes to map (binary) bits to complex modulation symbols.

[0073] In some embodiments, the first type of modulation mapping method is a modulation mapping method based on a uniform modulation constellation; the second type of modulation mapping method is a modulation mapping method based on a non-uniform modulation constellation.

[0074] In other words, the first type of system mapping is a regular modulation mapping, which uses a uniform modulation constellation to map bits to complex modulation symbols. The uniform modulation constellation can be binary phase shift keying (BSPK), quadrature phase shift keying (QPSK), quadrature amplitude modulation (QAM), 64QAM, 256QAM, 1024QAM, etc.

[0075] The second type of modulation mapping method uses a non-uniform modulation constellation to map bits into complex modulation symbols. The points of the non-uniform modulation constellation may be trained based on artificial intelligence and other methods.

[0076] For example, the definition or specification of an N-order non-uniform modulation constellation can be a direct mapping between N bits and complex symbols. For instance, if N = 2, then the definition of a non-uniform modulation constellation can be expressed as shown in Table 1 below.

[0077] Table 1

[0078] Bit Constellation Points 00 <![CDATA[A1+B1j]]> 01 <![CDATA[A2+B2j]]> 10 <![CDATA[A3+B3j]]> 11 <![CDATA[A4+B4j]]>

[0079] Where j represents the imaginary part of the complex number; A1, B1, A2, B2, A3, B3, A4, and B4 are the corresponding constellation points or the real and imaginary parts of the complex number; a non-uniform constellation refers to any two constellation points in A1+B1j, A2+B2j, A3+B3j, and A4+B4j whose distances are not exactly the same.

[0080] In some embodiments, if the modulation scheme used is QPSK, then the bit pairs b(2i), b(2i+1) of the reference signal base sequence or data signal can be mapped to complex modulation symbols or constellation points d(i) by the following formula (1), i.e., the first type of modulation mapping.

[0081]

[0082] In some embodiments, if the first type of modulation mapper is a regular modulation constellation, then the main function of the modulation control information is to adjust the amplitude and / or phase (or the real part I and / or imaginary part Q of d(i)) of the complex modulation symbol d(i) to generate the complex modulation symbol d′(i), which corresponds to the second type of modulation mapping.

[0083] That is, when the first type of modulation mapping method is a modulation mapping method based on a uniform modulation constellation, the second type of modulation mapping method is determined based on the first type of modulation mapping method.

[0084] In some embodiments, on the resource element (k,l) included in the data channel, the reference signal corresponding to the antenna port or antenna port index (the antenna port or antenna port index can be simply referred to as the port) It is represented by the following formula (2).

[0085]

[0086] Where, k represents the frequency domain position of the resource element (k,l) of the reference signal corresponding to port p, which is a subcarrier or frequency index relative to the frequency domain reference point; l represents the time domain position of the resource element of the reference signal corresponding to port p, which is the time domain (OFDM) symbol position or symbol index relative to the time domain reference point; η represents the power factor of the reference signal corresponding to port p; k″ is the complex sequence (or simply reference signal sequence) of the reference signal corresponding to multiplex group λ. λ The element index; λ represents the index of the reference signal multiplexing group to which port p belongs; the reference signal base sequence r λ (k″) is generated based on λ, or used to generate r. λ The initialization sequence of the pseudo-random sequence (k″) is determined by λ or generated based on the multiplexing group λ.

[0087] In some embodiments, the frequency domain reference point may be subcarrier 0 in the common resource block 0 of the data channel or subcarrier 0 of the lowest numbered resource block; the time domain reference point is the start of the time slot or data channel scheduling resource.

[0088] In some embodiments, the data channel may be a physical downlink shared channel (PDSCH) or a PUSCH.

[0089] It should be noted that p is a port index, and port p refers to the port with the number, index, or identifier p. For ease of description, this disclosure uses index to uniformly replace number and identifier. For example, port p = 0 refers to the port with index 0.

[0090] In addition, if the port reference point p0 = 0, then the port index p can take values ​​in the range of p = 0, 1, 2, ..., N. p -1. Where N p This represents the total number of ports, flows, or layers. If the reference point of the port index p0 > 0, then the range of the port index p can be p = p0, p0+1, p0+2, ..., p0+N. p -1. If p0 = 1000 and N p =16, then the range of port index p can be p=1000,1001,1002,...1015.

[0091] Given the similarity in the technical descriptions of port count, stream count, or layer count, a port or port index can be replaced by a layer or layer index, or a stream or stream index. For example, on OFDM symbol l, the frequency domain index k of the mapping resource of the reference signal corresponding to layer p is determined by the layer index p.

[0092] The above clarifications and explanations apply to all embodiments of this disclosure. Unless otherwise expressly stated, indexes in this disclosure may also be replaced by values ​​or take values.

[0093] It should be understood that a reference signal multiplexing group can be simply referred to as a multiplexing group or multiplexing block. There is a one-to-one or many-to-one mapping relationship between a port p and a multiplexing group λ. When a port belongs to a multiplexing group, there is a one-to-one mapping relationship between p and λ; when multiple ports belong to a multiplexing group, there is a many-to-one mapping relationship between p and λ.

[0094] In some embodiments, if the reference signal sequence generated based on the multiplex group is r λ Under the premise of no ambiguity, the subscript λ can be omitted, that is, r λ (k″) can be written as r(k″)

[0095] In some embodiments, if a common reference signal sequence is generated based on all multiplexing groups, then It can be expressed as the following formula (3).

[0096]

[0097] In some embodiments, in order to indicate the subcarrier spacing and specific port number, It can also be expressed as the following formula (4).

[0098]

[0099] Where, p j Let p represent the j-th port, and u represent the subcarrier spacing. j = 0, 1, 2, ..., v-1, where v represents the maximum number of ports supported.

[0100] In some embodiments, the reference signal It can be represented as formula (5).

[0101]

[0102] Wherein, the reference signal basis sequence r p (k″) is generated based on port p, or used to generate r. p The initialization sequence of the pseudo-random sequence (k″) is determined by port p or generated based on port p.

[0103] In some embodiments, on resource element (k,l), the reference signal It may be expressed as the following formula (6).

[0104]

[0105]

[0106] Where χ, δ, and τ represent functions or mapping relationships, respectively; sequence W f It is a frequency domain mask sequence of length N1, W f (k′) represents the sequence W f The k′-th element; sequence W t It is a time-domain mask sequence of length M1, W t (l′) represents the sequence W t The l′-th element. W f and W t It is determined by p. k, k′, u, p, N1, M1, l, and l′ are non-negative integers.

[0107] In some embodiments, the reference signal It may be expressed as the following formula (7).

[0108]

[0109] Where, N λ and N′ λ These represent the number of (code division) multiplexers corresponding to configuration type 1 and configuration type 2, respectively. The position offset Δ is determined by λ, which is a non-negative integer. Together with l′, they determine the OFDM symbol position of the reference signal. In some embodiments, l′ is the relative symbol position index corresponding to a single-symbol or double-symbol reference signal, where l′∈{0} for a single symbol and l′∈{0,1} for a double symbol. It is the OFDM symbol position of the preceding reference signal or the OFDM symbol position of the additional reference signal.

[0110] It should be noted that, for the sake of simplicity, this disclosure only uses a base sequence as r. λ The scheme is described from the perspective of (k″), but the signal transmission scheme provided in this disclosure is also applicable to the base sequence r. p In the case of (k″).

[0111] It should be understood that in an OFDM system, a resource element is typically defined as a resource unit consisting of one subcarrier and one OFDM symbol. A resource block (RB) is another resource unit that contains multiple subcarriers; for example, a resource block consists of 12 subcarriers.

[0112] A resource element can also be viewed as a resource grid (RG). Correspondingly, the first physical resource or the second physical resource is a set of resources consisting of one or more REs or RBs.

[0113] In some embodiments, the second type of modulation mapping scheme is determined based on the first type of modulation mapping scheme and an adjustment amount; the adjustment amount includes at least one of the following:

[0114] First additive adjustment, second additive adjustment, first multiplicative adjustment, second multiplicative adjustment.

[0115] Among them, the modulation control information indicates the value of the adjustment amount.

[0116] In some embodiments, the real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping and a first multiplicative adjustment amount; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping; or,

[0117] The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping and the second multiplicative adjustment; or,

[0118] The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping and the first multiplicative adjustment amount; the real part of the second type of modulation mapping is generated based on the real part of the first type of modulation mapping and the second multiplicative adjustment amount.

[0119] In some embodiments, the real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping, a first multiplicative adjustment, and a first additive adjustment; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping; or,

[0120] The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping, the second multiplicative adjustment, and the second additive adjustment; or,

[0121] The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping, the first multiplicative adjustment amount, and the first additive adjustment amount; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping, the second multiplicative adjustment amount, and the second additive adjustment amount.

[0122] In some embodiments, the adjustment amount is based on port configuration, and the adjustment amount is configured independently for the reference signal or data signal corresponding to each port.

[0123] In some embodiments, the adjustment amount is the magnitude variable a and the complex exponential term e. jθb The product of the amplitude variable a and the phase variable b, which are determined based on the adjustment index.

[0124] The adjustment amount includes at least one of the following:

[0125] First additive adjustment, second additive adjustment, first multiplicative adjustment, second multiplicative adjustment.

[0126] In some embodiments, the second type of modulation mapping d′(i) can be represented by formula (8);

[0127]

[0128] Alternatively, the second type of modulation mapping d′(i) can be expressed as formula (9);

[0129]

[0130] Alternatively, the second type of modulation mapping d′(i) can be expressed as formula (10);

[0131]

[0132]

[0133] Among them, the first multiplicative adjustment amount Second-square adjustment Used for phase and / or amplitude adjustment.

[0134] In some embodiments, and It may be defined as or,

[0135]

[0136] The modulation control information indicates the values ​​of amplitude variable a and phase variable b; θ is a constant, and possible values ​​of θ include, but are not limited to, ±π. In some embodiments, and It may be defined as

[0137]

[0138] or,

[0139]

[0140] or,

[0141]

[0142] or,

[0143]

[0144] The modulation control information indicates at least one of the following: the amplitude variable a1 of the first multiplicative adjustment, the phase variable b1 of the first multiplicative adjustment, the amplitude variable a2 of the second multiplicative adjustment, and the phase variable b2 of the second multiplicative adjustment.

[0145] In some embodiments, the second type of modulation mapping d′(i) can be represented as formula (11);

[0146]

[0147] Alternatively, the second type of modulation mapping d′(i) can be expressed as formula (12);

[0148]

[0149] Alternatively, the second type of modulation mapping d′(i) can be expressed as formula (13);

[0150]

[0151]

[0152] Where d1 is the first additive adjustment and d2 is the second additive adjustment. i It can take the value of a positive or negative number.

[0153] In some embodiments, the modulation control information includes an adjustment index, which indicates the value of the adjustment amount.

[0154] It should be noted that the first multiplicative adjustment amount or the second multiplicative adjustment amount can also be the corresponding amplitude variable and / or phase variable. For the sake of simplicity, unless otherwise specified, the first multiplicative adjustment amount in this disclosure refers to the first multiplicative adjustment amount. The term "first multiplicative adjustment" refers to the amplitude variable a1 and the phase variable b1 of the first multiplicative adjustment; the second multiplicative adjustment is... The term refers to the amplitude variable a2 of the second multiplicative adjustment and the phase variable b2 of the second multiplicative adjustment.

[0155] In some embodiments, the first multiplicative adjustment amount represents the first multiplicative adjustment amount. Or the magnitude variable a1 of the first multiplicative adjustment and / or the phase variable b1 of the first multiplicative adjustment; similarly, the second multiplicative adjustment represents the second multiplicative adjustment. Or the magnitude variable a2 of the second multiplicative adjustment and / or the phase variable b2 of the second multiplicative adjustment.

[0156] In some embodiments, the adjustment index is 2 bits, and the first multiplicative adjustment is... θ equals π, and the second type of modulation mapping d′(i) can be defined by the following formula (14).

[0157]

[0158] Among them, the first multiplicative adjustment amount The mapping relationship between the phase variable b and the 2-bit adjustment index is shown in Table 2 below.

[0159] Table 2

[0160]

[0161] In some embodiments, the adjustment index is 2 bits, and the first multiplicative adjustment is... θ equals π, and the second type of modulation mapping d′(i) can be defined by the following formula (15).

[0162]

[0163] in, The mapping relationship between the amplitude variable a and the phase variable b and the 2-bit adjustment index is shown in Table 3 below.

[0164] Table 3

[0165]

[0166] In some embodiments, modulation control information includes a power ratio or power ratio index between a reference signal and a data signal; the power ratio or power ratio index is used to indicate the value of the adjustment amount, or there is a mapping relationship between the power ratio or power ratio index and the value of the adjustment amount.

[0167] It should be understood that the power ratio between the reference signal and the data signal can also be referred to as the transmission power ratio between the reference signal and the data signal, or the power ratio between the pilot and the data, or the power ratio between the pilot and the data signal. This disclosure does not limit it in this way.

[0168] The adjustment value associated with or indicated by the power ratio or power ratio index includes at least one of the following: a first additive adjustment, a second additive adjustment, a first multiplicative adjustment, and a second multiplicative adjustment.

[0169] The power ratio between the reference signal and the data refers to the power ratio of the reference signal and the data signal superimposed or mapped onto the same resource element.

[0170] In some embodiments, if the transmission power of the reference signal is α and the transmission power of the data signal is β, then the power ratio γ between the reference signal and the data signal can be defined as follows:

[0171] Where α+β≤1, 0≤α≤1, 0≤β≤1, and 1 represents the transmission power of the device.

[0172] In some embodiments, the power ratio index is used to indicate different γ values.

[0173] First multiplicative adjustment amount θ equals π, first multiplicative adjustment The mapping relationship between the phase variable b and the 2-bit power ratio index is shown in Table 4 below.

[0174] Table 4

[0175] <![CDATA[2-bit power ratio index I pr > Phase variable b 0 (2 bits, value 00) 1 1 (2 bits, each valued as 0 or 1) 1 / 2 2 (2 bits have a value of 10) 1 / 4 3 (2 bits have a value of 11) 1 / 16

[0176] In some embodiments, the modulation control information includes a power ratio index between the reference signal and the data signal, and a modulation coding scheme for the data signal; the power ratio index and the modulation coding scheme for the data signal are used to indicate the value of the adjustment amount, or there is a mapping relationship between the power ratio index, the modulation coding scheme for the data signal, and the value of the adjustment amount.

[0177] For example, the power ratio index and the modulation coding scheme of the data signal are used to indicate the modulation scheme or modulation order. The modulation scheme or modulation order indicates the value of the adjustment amount, or there is a mapping relationship between the modulation scheme or modulation order and the value of the adjustment amount.

[0178] The modulation scheme or modulation order associated with the power ratio index and the modulation coding scheme of the data signal, or the adjustment amount information indicated therein, includes at least one of the following: a first additive adjustment amount, a second additive adjustment amount, a first multiplicative adjustment amount, and a second multiplicative adjustment amount.

[0179] In some embodiments, the modulation control information includes a power ratio index between a reference signal and a data signal, a modulation coding scheme for the data signal, and bit information of the data signal;

[0180] The bit information of the data signal is used to indicate the phase variable of the first multiplicative adjustment and / or the phase variable of the second multiplicative adjustment;

[0181] The power ratio index and the modulation and coding scheme of the data signal are used to indicate at least one of the following: a first additive adjustment, a first additive adjustment, an amplitude variable of a first multiplicative adjustment, and an amplitude variable of a second multiplicative adjustment.

[0182] For example, the power ratio index and the modulation coding scheme of the data signal are used to indicate the modulation scheme or modulation order. The modulation scheme or modulation order indicates the value of the adjustment amount, or there is a mapping relationship between the modulation scheme or modulation order and the value of the adjustment amount.

[0183] The modulation scheme or modulation order associated with the power ratio index and the modulation coding scheme of the data signal, or the adjustment amount information indicated therein, includes at least one of the following: a first additive adjustment amount, a second additive adjustment amount, a first multiplicative adjustment amount, and a second multiplicative adjustment amount.

[0184] In some embodiments, the bit information of the data signal is two bits specified from the L bits corresponding to the complex modulation symbol, where L is greater than or equal to 2.

[0185] The L bits corresponding to a complex modulation symbol are the modulation order L bits corresponding to each complex modulation symbol. The L bits represent the amount of binary information that the complex modulation symbol can transmit, which is directly determined by the design of the constellation diagram.

[0186] For example, when the modulation mode of the complex modulation symbol is BPSK, L = 1; when the modulation mode of the complex modulation symbol is QPSK, L = 2; when the modulation mode of the complex modulation symbol is 16QAM, L = 4; and when the modulation mode of the complex modulation symbol is 64QAM, L = 6.

[0187] In some embodiments, two designated bits from the L bits are used to indicate the phase variables of the first multiplicative adjustment and the second multiplicative adjustment, respectively. These two designated bits can be the first two bits and the last two bits from the L bits. The values ​​of the first two bits and the last two bits from the L bits, after AND / OR / XOR operations, are used to indicate the phase variables of the first multiplicative adjustment and the second multiplicative adjustment, respectively.

[0188] Or, the first L bits Bits, after The values ​​of the bits after AND / OR / XOR operations are used to indicate the phase variables of the first multiplicative adjustment and the second multiplicative adjustment, respectively. Where L is a positive integer greater than or equal to 2. This is the floor symbol.

[0189] For example, d1 = d2 = d, the adjustment index is 2 bits, the first multiplicative adjustment. Second-order adjustment θ = π, the data modulation method is 16QAM (i.e., L = 4), the first two bits L0 and L1, and the last two bits L2 and L3 of each complex modulation symbol are XORed to indicate b1 and b2 respectively. Then the complex modulation symbol d′(i) can be represented by the following formula (16).

[0190]

[0191] in, The mapping relationship between the amplitude variable 'a' and the additive adjustment amount 'I' and the 2-bit power ratio index (Power_Ratio_Index) is shown in Table 5 below.

[0192] Table 5

[0193]

[0194] b1 and b2 can be represented as b1 = L0 XOR L1 and b2 = L2 XOR L3, respectively.

[0195] XOR stands for Exclusive OR operation, which means that the result of XORing two identical bits is 1 and otherwise 0. For example, 1XOR 1 = 1, 0XOR 0 = 1, 0XOR 1 = 0, and 1XOR 0 = 0.

[0196] In some embodiments, the modulation control information includes a power ratio index between a reference signal and a data signal, a modulation coding scheme for the data signal, and bit information of the reference signal;

[0197] The bit information of the reference signal is used to indicate the phase variable of the first multiplicative adjustment and / or the phase variable of the second multiplicative adjustment;

[0198] The power ratio index and the modulation and coding scheme of the data signal are used to indicate at least one of the following: a first additive adjustment, a first additive adjustment, an amplitude variable of a first multiplicative adjustment, and an amplitude variable of a second multiplicative adjustment.

[0199] For example, the power ratio index and the modulation coding scheme of the data signal are used to indicate the modulation scheme or modulation order. The modulation scheme or modulation order indicates the value of the adjustment amount, or there is a mapping relationship between the modulation scheme or modulation order and the value of the adjustment amount.

[0200] The modulation scheme or modulation order associated with the power ratio index and the modulation coding scheme of the data signal, or the adjustment amount information indicated therein, includes at least one of the following: a first additive adjustment amount, a second additive adjustment amount, a first multiplicative adjustment amount, and a second multiplicative adjustment amount.

[0201] In some embodiments, the bit information of the reference signal can be determined by the M bits corresponding to each element in the complex root / sequence sequence of the reference signal.

[0202] In some embodiments, two designated bits from the M bits are used to indicate the phase variables of the first multiplicative adjustment and the second multiplicative adjustment, respectively. These two designated bits can be the first two bits and the last two bits from the M bits. The values ​​of the first two bits and the last two bits from the M bits, after AND / OR / XOR operations, are used to indicate the phase variables of the first multiplicative adjustment and the second multiplicative adjustment, respectively.

[0203] Or, the first of the M bits Bits, after The values ​​of the bits after AND / OR / XOR operations are used to indicate the phase variables of the first multiplicative adjustment and the second multiplicative adjustment, respectively. Here, M is a positive integer.

[0204] In the above embodiments, the second type of modulation mapping method is determined based on the first type of modulation mapping method and the adjustment amount. The adjustment amount value can be indicated by at least one of the following: adjustment amount index, power ratio index between reference signal and data signal, modulation coding scheme of data signal, bit information of data signal, and bit information of reference signal.

[0205] Thus, by using the modulation mapping method determined by the modulation control information, the modulation methods of the reference signal and the data signal can be flexibly configured, thereby achieving separation and optimization of the reference signal and the data signal in terms of signal space characteristics. This helps to reduce mutual interference between the reference signal and the data signal, improve channel estimation accuracy, and enhance data demodulation performance.

[0206] In this disclosure, when the adjustment value is indicated by the adjustment index or there is a mapping relationship between the adjustment index and the adjustment value, the adjustment index can also be determined based on the location of the resource element, or the adjustment index can also be determined based on the location and port index of the resource element.

[0207] In some embodiments, the adjustment index is determined based on the location of the resource element, or the adjustment index is determined based on the location of the resource element and the port index.

[0208] The adjustment amount includes at least one of the following: first additive adjustment amount, first additive adjustment amount, first multiplicative adjustment amount, and second multiplicative adjustment amount.

[0209] The location of a resource element includes its frequency domain index k and / or its time domain index l.

[0210] In some embodiments, the adjustment index is determined based on at least one of a first index, a second index, and a third index.

[0211] In some embodiments, the first index is determined based on the frequency domain index of the resource element; or,

[0212] The first index is determined based on the frequency domain index of the resource element and the first factor; wherein, the first factor is determined based on at least one of the following: the number of adjustment values, the number of antennas, the number of ports, and a predefined first value.

[0213] For example, when the adjustment index is determined based on the position of the resource element and the first index is determined based on the frequency domain index of the resource element, the method for determining the first index includes any one of the following A1-A4:

[0214] A1. The first index I1 is the frequency domain index of the resource element, i.e., I1 = k.

[0215] A2, First Index in, It is a non-negative integer used to control the offset of the first index relative to k.

[0216] A3, First Index in, It is a non-negative integer, and is also used to control the offset of the first index relative to k.

[0217] A4, First Index

[0218] pass or The frequency domain index k of the resource element forms a one-to-one mapping with the first index I1. Therefore, the second type of modulation mapping can be flexibly configured through the first index, achieving separation and optimization of the reference signal and data signal in signal space characteristics, thereby optimizing data transmission efficiency while ensuring channel estimation accuracy.

[0219] When the adjustment index is determined based on the position of the resource element, and the first index is determined based on the frequency domain index and the first factor of the resource element, the method for determining the first index includes any one of the following B1-B5:

[0220] B1, First index I1 = k mod F1, where F1 is the first factor.

[0221] Where mod represents the modulo operation, the first factor F1 = N1, N1 may be the number of (discrete) values ​​of the adjustment amount, the number of antennas, the number of ports, or a predefined non-negative integer, or F1 = ρ1N1, where ρ1 is a non-negative integer used to adjust the value range of the first index.

[0222] B2, First Index

[0223] in, This represents the rounding operation (i.e., rounding up or rounding down). It uses the first factor F1 and... In the operation, the frequency domain index k of the resource element forms a one-to-one mapping relationship with the first index I1;

[0224] B3, First Index

[0225] Through the first factor F1 and mod operation, the frequency domain index k of the resource element and the first index I1 form a one-to-one mapping relationship.

[0226] B4, First index I1 = (k + O1) mod F1, or,

[0227] Where O1 is a non-negative integer used to control the value of the first index within the range [0, F1-1]; through the first factor F1, O1 and mod operation, the frequency domain index k of the resource element and the first index I1 form a one-to-one mapping relationship.

[0228] B5, First index I1 = (O2k + O1) mod F1, or,

[0229] Where O2 is a non-negative integer used to control the value of the first index within the range [0, F1-1]; through the first factor F1, O2, O1 and mod (or The frequency domain index k of the resource element forms a one-to-one mapping relationship with the first index I1.

[0230] When the adjustment index is determined based on the location and port index of the resource element, and the first index is determined based on the frequency domain index of the resource element, the method for determining the first index includes any one of the following C1-C4:

[0231] C1, First index I1 = k + p.

[0232] Where p is the port index.

[0233] C2, First Index

[0234] in, It is a non-negative integer used to control the offset of the first index relative to k.

[0235] C3, First Index

[0236] in, It is a non-negative integer used to control the offset of the first index relative to k.

[0237] C4, First Index

[0238] pass or The frequency domain index k of the resource element forms a one-to-one mapping relationship with the first index I1.

[0239] When the adjustment index is determined based on the location and port index of the resource element, and the first index is determined based on the frequency domain index and the first factor of the resource element, the method for determining the first index includes any one of the following D1-D5:

[0240] D1, First index I1 = (k+p) mod F1.

[0241] Through the first factor F1 and mod operation, the frequency domain index k, port index p of the resource element and the first index I1 form a one-to-one mapping relationship.

[0242] D2, First Index

[0243] Through the first factor F1 and The operation establishes a one-to-one mapping relationship between the frequency domain index k and port index p of the resource element and the first index I1.

[0244] D3, First Index

[0245] Through the first factor F1, With mod operations, the frequency domain index k, port index p of the resource element and the first index I1 form a one-to-one mapping relationship.

[0246] D4, First index I1 = (k+p+O1) mod F1, or,

[0247] Where O1 is a non-negative integer used to control the value of the first index within the range [0, F1-1]. Through the first factor F1, O1, and mod operation, the frequency domain index k, port index p of the resource element and the first index I1 form a one-to-one mapping relationship.

[0248] D5, First index I1 = (O2(k+p)+O1) mod F1, or,

[0249] Where O2 is a non-negative integer, it is also used to control the value of the first index within the range [0, F1-1]. This is achieved through the first factor F1, O2, O1, and mod (or... The operation establishes a one-to-one mapping relationship between the frequency domain index k and port index p of the resource element and the first index I1.

[0250] In some embodiments, the second index is determined based on the time-domain index of the resource element; or,

[0251] The second index is determined based on the time-domain index of the resource element and a second factor; wherein the second factor is determined based on at least one of the following: the number of adjustment values, the number of antennas, the number of ports, and a predefined second value.

[0252] For example, when the adjustment index is determined based on the location of the resource element and the second index is determined based on the time-domain index of the resource element, the method for determining the second index includes any one of the following E1-E4:

[0253] E1 and the second index I2 are the time-domain indexes of the resource element, i.e., I2 = l.

[0254] E2, Second Index

[0255] in, It is a non-negative integer used to control the offset of the second index relative to l;

[0256] E3, Second Index

[0257] in, It is a non-negative integer, and is also used to control the offset of the second index relative to l.

[0258]

[0259] pass or The time-domain index I1 of the resource element and the second index I2 form a one-to-one mapping relationship.

[0260] When the adjustment index is determined based on the location of the resource element, and the second index is determined based on the time-domain index and the second factor of the resource element, the determination method of the second index includes any one of the following F1-F5:

[0261] F1, second index I2 = l mod F2, where the second factor F2 = N1, N1 may be the number of adjustment values, the number of antennas, the number of ports, or a predefined non-negative integer; or, F2 = ρ2N1, where ρ2 is a non-negative integer used to adjust the range of values ​​of the second index; through the second factor F2 and mod operation, the time domain index l of the resource element and the second index I2 form a one-to-one mapping relationship.

[0262] F2, Second Index

[0263] Through the second factor F2 and In the operation, the time-domain index I1 of the resource element and the second index I2 form a one-to-one mapping relationship.

[0264] F3, Second Index

[0265] Through the second factor F2, With mod operations, the temporal index l of the resource element and the second index l2 form a one-to-one mapping relationship.

[0266] F4, the second index I2 = (l + O1) mod F2, or,

[0267] Where O1 is a non-negative integer, used to control the value of the second index within the range [0, F2-1]. Through the second factor F2, O1, and mod operation, a one-to-one mapping relationship is formed between the time-domain index l of the resource element and the second index l2.

[0268] F5, the second index I2 = (O2l + O1) mod F2, or,

[0269] Where O2 is a non-negative integer, it is also used to control the value of the second index within the range [0, F2-1]. This is achieved through the second factor F2, O2, O1, and mod (or... The operation establishes a one-to-one mapping relationship between the time-domain index I1 and the second index I2 of the resource element.

[0270] When the adjustment index is determined based on the location and port index of the resource element, and the second index is determined based on the time-domain index and second factor of the resource element, the determination method of the second index includes any one of the following G1-G5:

[0271] G1, Second index I2 = (l+p)mod F2.

[0272] Wherein, the second factor F2 = N1, where N1 may be the number of adjustment values, the number of antennas, the number of ports, or a predefined non-negative integer, or F2 = ρ2N1.

[0273] Here, ρ2 is a non-negative integer used to (flexibly) adjust the range of values ​​for the second index. Through the second factor F2 and mod operation, the time-domain index l, port index p of the resource element and the second index I2 form a one-to-one mapping relationship.

[0274] G2, Second Index

[0275] Through the second factor F2 and The operation establishes a one-to-one mapping relationship between the time-domain index l, the port index p, and the second index I2 of the resource element.

[0276] G3, Second Index

[0277] Through the second factor F2, With mod operations, the time-domain index l, port index p, and second index I2 of the resource element form a one-to-one mapping relationship.

[0278] G4, the second index I2 = (l + p + O1) mod F2, or,

[0279] Through the second factor F2, O1 and mod operations, the time domain index l, port index p of the resource element and the second index I2 form a one-to-one mapping relationship.

[0280] G5, the second index I2 = (O2(l+p)+O1)mod F2, or,

[0281] Through the second factor F2, O2, O1 and mod (or The operation establishes a one-to-one mapping relationship between the time-domain index l, the port index p, and the second index I2 of the resource element.

[0282] In some embodiments, the third index is determined based on the frequency domain index and time domain index of the resource element; or,

[0283] The third index is determined based on the frequency domain index, time domain index, and third factor of the resource element; the third factor is determined based on at least one of the following: the number of adjustment values, the number of antennas, the number of ports, and a predefined third value.

[0284] For example, when the adjustment index is determined based on the location of the resource element, and the third index is determined based on the frequency domain index and time domain index of the resource element, the method for determining the third index includes any one of the following H1-H4:

[0285] H1, Third Index or,

[0286] in, It is the maximum value of k or a predefined non-negative integer. It is the maximum value of l or a predefined non-negative integer.

[0287] H2, Third Index or,

[0288] in, It is a non-negative integer. (Passed) or The frequency domain index k, time domain index l, and third index I3 of the resource element form a one-to-one mapping relationship.

[0289] H3, Third Index or,

[0290] in, It is a non-negative integer. (Passed) or The frequency domain index k, time domain index l, and third index I3 of the resource element form a one-to-one mapping relationship.

[0291] H4, Third Index or,

[0292] pass and The frequency domain index k, time domain index l, and third index I3 of the resource element form a one-to-one mapping relationship.

[0293] When the adjustment index is determined based on the location of the resource element, and the third index is determined based on the frequency domain index, time domain index, and third factor of the resource element, the method for determining the third index includes any one of the following I1-I5:

[0294] I1, Third Index or,

[0295] in, It is the maximum value of k or a predefined non-negative integer. It is the maximum value of l or a predefined non-negative integer; the third factor F3 = N1, where N1 may be the number of adjustment values, the number of antennas, the number of ports, or a predefined non-negative integer, or F3 = ρ3N1, where ρ3 is a non-negative integer used to adjust the range of values ​​for the third index.

[0296] Through the third factor F3 and mod operation, the frequency domain index k, time domain index l, and third index I3 of the resource element form a one-to-one mapping relationship.

[0297] I2, Third Index or,

[0298] Through the third factor F3 and The operation establishes a one-to-one mapping relationship between the frequency domain index k, the time domain index l, and the third index I3 of the resource element.

[0299] I3, Third Index or,

[0300] Through the third factor F3, With mod operations, the frequency domain index k, time domain index l, and third index I3 of the resource element form a one-to-one mapping relationship.

[0301] I4, Third Index or,

[0302] Where O1 is a non-negative integer used to control the value of the third index within the range [0, F3-1]. Through the third factor F3, O1, and mod operation, the frequency domain index k, time domain index l, and third index I3 of the resource element form a one-to-one mapping relationship.

[0303] I5, Third Index or,

[0304] Where O2 is a non-negative integer, it is also used to control the value of the third index within the range [0, F3-1]. This is achieved through the third factor F3, O2, O1, and mod (or...). The operation establishes a one-to-one mapping relationship between the frequency domain index k, the time domain index l, and the third index I3 of the resource element.

[0305] When the adjustment index is determined based on the location and port index of the resource element, and the third index is determined based on the frequency domain index and time domain index of the resource element, the method for determining the third index includes any one of the following J1-J4:

[0306] J1, Third Index or

[0307] J2, Third Index or,

[0308] pass or The frequency domain index k, port index p, and time domain index l of the resource element form a one-to-one mapping relationship with the third index I3.

[0309] J3, Third Index or,

[0310] pass or The frequency domain index k, port index p, and time domain index l of the resource element form a one-to-one mapping relationship with the third index I3.

[0311] J4, Third Index or

[0312] pass and The frequency domain index k, port index p, and time domain index l of the resource element form a one-to-one mapping relationship with the third index I3.

[0313] When the adjustment index is determined based on the location and port index of the resource element, and the third index is determined based on the frequency domain index, time domain index, and third factor of the resource element, the method for determining the third index includes any one of the following K1-K5:

[0314] K1, Third Index or,

[0315] in, It is the maximum value of k or a predefined non-negative integer. It is the maximum value of l or a predefined non-negative integer. The third factor F3 = N1, where N1 may be the number of adjustment values, the number of antennas, the number of ports, or a predefined non-negative integer. Alternatively, F3 = ρ3N1, where ρ3 is a non-negative integer used to adjust the range of values ​​for the third index.

[0316] Through the third factor F3 and mod operation, the frequency domain index k, port index p, time domain index l of the resource element form a one-to-one mapping relationship with the third index I3.

[0317] K2, Third Index or,

[0318] Through the third factor F3 and In the operation, the frequency domain index k, port index p, time domain index l of the resource element form a one-to-one mapping relationship with the third index I3.

[0319] K3, Third Index or,

[0320] Through the third factor F3, With mod operations, the frequency domain index k, port index p, time domain index l of the resource element form a one-to-one mapping relationship with the third index I3.

[0321] K4, Third Index or,

[0322] Through the third factor F3, O1, and mod operations, the frequency domain index k, port index p, and time domain index l of the resource element form a one-to-one mapping relationship with the third index I3.

[0323] K5, Third Index or,

[0324]

[0325] Through the third factor F3, O2, O1, and mod (or The operation establishes a one-to-one mapping relationship between the frequency domain index k, port index p, time domain index l, and third index I3 of the resource element.

[0326] In some embodiments, the first multiplicative adjustment amount θ equals π, and d′(i) can be defined as follows (17).

[0327]

[0328] Where b = 1 / I1, b = 1 / I2, or b = 1 / I3.

[0329] In some embodiments, at least two of the first, second, and third indices are used to indicate or identify different adjustment amounts.

[0330] For example, the first multiplicative adjustment amount Second-order adjustment If θ equals π, then d′(i) may be defined as follows (18).

[0331]

[0332] Where b1 = 1 / I1, b2 = 1 / I2.

[0333] In the above embodiments, the second type of modulation mapping method is determined based on the first type of modulation mapping method and the adjustment amount. The adjustment amount value can be indicated by an adjustment amount index, which is determined based on at least one of a first index, a second index, and a third index. Thus, by using the modulation mapping method determined by the modulation control information, the modulation methods of the reference signal and the data signal can be flexibly configured, thereby achieving separation and optimization of the reference signal and the data signal in terms of signal space characteristics. This helps reduce mutual interference between the reference signal and the data signal, improves channel estimation accuracy, and enhances data demodulation performance.

[0334] The signal transmission method provided in this disclosure can also reduce the number of ports for the reference signal. As a result, the number of ports for the reference signal is less than the number of ports for the data signal, which can reduce the time and frequency resource occupation of the reference signal and reduce the interference of the reference signal on the data signal.

[0335] In some embodiments, the first port index set includes N set1 N corresponding to each port set1The first set of port indices, the second set of port indices includes N. set2 N corresponding to each port set2 There are two port indices; the first set of port indices is a subset of the second set of port indices.

[0336] In some embodiments, the port index in the first port set is determined based on the second port index set and reference signal port selection information;

[0337] The reference signal port selection information is used to indicate the port indices in the second port index set that belong to the first port index set. In other words, the reference signal port selection information indicates that some port indices in the second port index set belong to the first port index set.

[0338] For example, the reference signal port selection information is a bitmap used to indicate the second port index set P. set2 Does the middle port index belong to the first port index set P? set1 .

[0339] The reference signal port selection information can also be referred to as port selection information, and this disclosure does not limit it to that.

[0340] In some embodiments, the i-th bit in the reference signal port selection information is used to indicate whether the i-th port index in the second port index set belongs to the first port index set.

[0341] For example, when the reference signal port selection information is a bitmap, a 1 in the i-th bitmap represents P. set2 The i-th element P set2 (i) belongs to P set1 Otherwise, P set2 The i-th element P set2 (i) does not belong to P set1 .

[0342] Alternatively, the i-th bit of the bitmap being 0 represents P. set2 The i-th element P set2 (i) belongs to P set1 Otherwise, P set2 The i-th element P set2 (i) does not belong to P set1 .

[0343] For example, if the second port index set P set2 Contains N set2 = 4 port indices {0,1,2,3} (i.e., P set2 ={0,1,2,3}), the port selection information is of length N. set2Given a bitmap 1100 with bits equal to 4 (if counting from left to right and starting from 0, then the i=0th and i=1th bits of the bitmap are 1), then the first port index set P... set1 Port index is P set2 (i=0)=1 and P set2 (i=1)=1 (that is, P) set1 ={0,1}).

[0344] In some embodiments, the second port index set includes at least one multiplexing group, and each multiplexing group includes at least one port index;

[0345] The λth bit in the reference signal port selection information is used to indicate whether the port index in the λth multiplex group of the second port index set belongs to the first port index set.

[0346] For example, when the reference signal port selection information is a bitmap, a λ-th bit of the bitmap being 1 represents P. set2 The port index belonging to multiplex group λ belongs to P. set1 Otherwise, P set2 The port index belonging to multiplexing group λ does not belong to P. set1 .

[0347] Alternatively, the λth bit of the bitmap being 0 represents P. set2 The port index belonging to multiplex group λ belongs to P. set1 Otherwise, P set2 The port index belonging to multiplexing group λ does not belong to P. set1 In this disclosure, the multiplexing group may be a code division multiplexing group.

[0348] For example, if P set2 ={0,1,2,3}, port {0,1} belongs to multiplex group λ=0, and port {2,3} belongs to multiplex group λ=1. Then, the bit diagram 01 of length 2 represents that the port belonging to multiplex group λ=1 belongs to P. set1 That is, P set1 ={2,3}.

[0349] In some embodiments, each bit in the reference signal port selection information corresponds to a codeword;

[0350] The w-th bit in the reference signal port selection information is used to indicate whether the port index associated with codeword w in the second port index set belongs to the first port index set.

[0351] For example, when the reference signal port selection information is a bitmap, a 1 at the w-th bit of the bitmap represents P. set2The port index belonging to codeword w belongs to P set1 Otherwise, P set2 The port index belonging to codeword w does not belong to P. set1 .

[0352] Alternatively, the w-th bit of the bitmap being 0 represents P. set2 The port index belonging to codeword w belongs to P set1 Otherwise, P set2 The port index belonging to codeword w does not belong to P. set1 .

[0353] For example, if P set2 ={0,1,2,3,4,5,6,7}, port {0,1,2,3} belongs to codeword group w=0, and port {4,5,6,7} belongs to multiplex group w=1. Then, the bit diagram 01 of length 2 represents that the port belonging to multiplex group w=1 belongs to P. set1 That is, P set1 ={4,5,6,7}.

[0354] In some embodiments, the reference signal port selection information is used to indicate the value index of the first parameter;

[0355] The port indices in the first port index set are determined based on the port indices in the second port index set and the first parameter; or...

[0356] The second port index set includes at least one multiplexing group, and each multiplexing group includes at least one port index; the multiplexing group index corresponding to the port index in the first port index set is determined based on the multiplexing group index in the second port index set and the first parameter.

[0357] For example, the port selection information is a first parameter P that is 1 or 2 bits in length. a Index of values p .

[0358] The port selection information is a first parameter P with a length of 1 bit. a Index of values p At that time, Indexp and the first parameter P a The mapping relationship between them can be shown in Table 6 below.

[0359] Table 6

[0360] <![CDATA[Index p ]]> <![CDATA[P a ]]> 0 1 1 2

[0361] The port selection information is a first parameter P with a length of 2 bits. a Index of values p At that time, Index pand the first parameter P a The mapping relationship between them can be shown in Table 7 below.

[0362] Table 7

[0363] <![CDATA[Index p ]]> <![CDATA[P a ]]> 00(0) 1 01(1) 2 10(2) 3 11(3) 4

[0364] Among them, Index p It could be binary bits, or the corresponding decimal value.

[0365] In some embodiments, the port index P of the second port index set set2 (i) Belongs to the first port index set P set1 i and the first parameter P a At least one of the following conditions must be met:

[0366] i mod P a =C a

[0367]

[0368] Among them, C a and C b It is a predefined non-negative integer.

[0369] For example, if P a =2 and C a =0, then the port index P of the second port index set is 0. set2 (i) Belongs to the first port index set P set1 , where ifod 2 = 0 (i.e., i = 0, 2, 4...).

[0370] If P a =2 and C a =1, then the port index P of the second port index set is 1. set2 (i) Belongs to the first port index set P set1 Where, if mod 2 = 1, (that is, i = 1, 3, 5...).

[0371] If P a =2 and C b =0, then the port index P of the second port index set is 0. set2 (i) Belongs to the first port index set P set1 ,in, (ie, i=0,1).

[0372] In some embodiments, the port indices belonging to multiplexing group λ in the second port index set belong to the first port index set P. set1 λ and the first parameter P aAt least one of the following conditions must be met:

[0373] λmod P a =C a

[0374]

[0375] For example, if P a =2 and C a =0, then P set2 The port index belonging to the multiplexing group λ belongs to the first port index set P. set1 , where λmod 2=0 (i.e. λ=0,2,4...).

[0376] In some embodiments, the port index belonging to codeword w in the second port index set belongs to the first port index set P. set1 w and the first parameter P a At least one of the following conditions must be met:

[0377] w mod P a =C a

[0378]

[0379] For example, if P a =2 and C a =0, then P set2 The port index belonging to codeword w belongs to the first port index set P. set1 , where w mod 2 = 0 (i.e., w = 0, 2, 4...).

[0380] In some embodiments, the port index in the first port set is determined based on the second port index set and the first signaling index; the first signaling index is used to indicate the port index in the second port index set that belongs to the first port index set.

[0381] The first signaling includes at least one of the following:

[0382] Modulation and coding scheme (MCS), the number of port indices in the second port index set or the number of transmission layers of the data signal, subcarrier spacing, and the power ratio between the reference signal and the data signal.

[0383] In some embodiments, the port indices in the first port set are determined by the second port index set and the MCS index, wherein the MCS index indicates or determines that a portion of the port indices in the second port index set belong to the first port set.

[0384] For example, the first signaling includes a modulation and coding scheme; the first signaling index is used to indicate the value of the fourth factor K, and the fourth factor K is used to indicate the relationship between the number of port indices in the second port index set that belong to the first port index set and the number of port indices in the second port index set.

[0385] In some embodiments, the top K or top K in the second port index set Each port index belongs to the first port set;

[0386] Alternatively, the last K or last K in the second port index set Each port index belongs to the first port set;

[0387] Alternatively, the top K or top K port index values ​​in the second port index set. Each port index belongs to the first port set;

[0388] Alternatively, the top K or top K ports with the smallest port index values ​​in the second port index set. Each port index belongs to the first port set.

[0389] For example, in the case where the first signaling includes a modulation and coding scheme, that is, the first signaling index is an MCS index, the MCS index (Index) MCS The relationship between ) and K is shown in Table 8 below.

[0390] Table 8

[0391]

[0392] Where K0, K1, ..., N MCS Index0, Index1, ... It is a non-negative integer.

[0393] In some embodiments, K n The relationship between K0 and K0 can be defined by the following formula (19).

[0394] K n =K0+nΔK

[0395] n = 0, 1, 2, ..., N MCS -1 Formula (19)

[0396] In some embodiments, the port indexes in the first port set are determined by the second port index set and the number of port indexes in the second port index set, wherein the number of port indexes in the second port index set determines that some port indexes in the second port index set belong to the first port set.

[0397] For example, the first signaling includes the number of port indices in the second port index set; the number of port indices in the second port index set is used to indicate the value of the fourth factor K, and the fourth factor K is used to indicate the relationship between the number of port indices in the second port index set that belong to the first port index set and the number of port indices in the second port index set.

[0398] In some embodiments, the top K or top K in the second port index set Each port index belongs to the first port set;

[0399] Alternatively, the last K or last K in the second port index set Each port index belongs to the first port set;

[0400] Alternatively, the top K or top K port index values ​​in the second port index set. Each port index belongs to the first port set;

[0401] Alternatively, the top K or top K ports with the smallest port index values ​​in the second port index set. Each port index belongs to the first port set.

[0402] For example, when the first signaling includes the number of port indices in the second port index set, the number of port indices N in the second port index set... set2 The relationship between K and K is shown in Table 9 below.

[0403] Table 9

[0404]

[0405] Where K0, K1, ..., N SE ,V0,V1,…, It is a non-negative integer.

[0406] In some embodiments, K n The relationship between K0 and K0 can be defined by the following formula (20).

[0407] K n =K0+nΔK

[0408] n = 0, 1, 2, ..., N SE -1 formula(20)

[0409] In some embodiments, the port indexes in the first port set are determined by the second port index set and the subcarrier spacing index, wherein the subcarrier spacing index indicates or determines that a portion of the port indexes in the second port index set belong to the first port set.

[0410] For example, the first signaling includes the subcarrier spacing; the first signaling index is used to indicate the value of the fourth factor K, and the fourth factor K is used to indicate the relationship between the number of port indices in the second port index set that belong to the first port index set and the number of port indices in the second port index set.

[0411] In some embodiments, the top K or top K in the second port index set Port

[0412] The reference belongs to the first port set;

[0413] Alternatively, the last K or last K in the second port index set Each port index belongs to the first port set;

[0414] Alternatively, the top K or top K port index values ​​in the second port index set. Each port index belongs to the first port set;

[0415] Alternatively, the top K or top K ports with the smallest port index values ​​in the second port index set. Each port index belongs to the first port set.

[0416] For example, when the first signaling includes a subcarrier interval, that is, when the first signaling index is a subcarrier interval index, the relationship between the subcarrier interval index μ and K is shown in Table 10 below.

[0417] Table 10

[0418]

[0419] Where K0, K1, ..., N μ ,μ0,μ1,…, It is a non-negative integer.

[0420] In some embodiments, K n The relationship between K0 and K0 can be defined by the following formula (21).

[0421] K n =K0+nΔK

[0422] n = 0, 1, 2, ..., N μ -1 Formula (21)

[0423] In some embodiments, the port indexes in the first port set are determined by the second port index set and the transmit power ratio index between the reference signal and the data signal, wherein the transmit power ratio index between the reference signal and the data signal indicates or determines that a portion of the port indexes in the second port index set belong to the first port set.

[0424] For example, the first signaling includes the transmission power ratio between the reference signal and the data signal; the first signaling index is used to indicate the value of the fourth factor K, and the fourth factor K is used to indicate the relationship between the number of port indices in the second port index set that belong to the first port index set and the number of port indices in the second port index set.

[0425] In some embodiments, the top K or top K in the second port index set Each port index belongs to the first port set;

[0426] Alternatively, the last K or last K in the second port index set Each port index belongs to the first port set;

[0427] Alternatively, the top K or top K port index values ​​in the second port index set. Each port index belongs to the first port set;

[0428] Alternatively, the top K or top K ports with the smallest port index values ​​in the second port index set. Each port index belongs to the first port set.

[0429] For example, when the first signaling includes a modulation and coding scheme, that is, when the first signaling index is the transmit power ratio index between the reference signal and the data signal, the transmit power ratio index between the reference signal and the data signal I pr The relationship between K and K is shown in Table 11 below.

[0430] Table 11

[0431]

[0432] Where K0, K1, ..., N I ,I0,I1,…, It is a non-negative integer.

[0433] In some embodiments, K n The relationship between K0 and K0 can be defined by the following formula (22).

[0434] K n =K0+nΔK

[0435] n = 0, 1, 2, ..., N I -1 Formula (22)

[0436] Next, as Figure 3 As shown, this disclosure provides another signal transmission method, which is applied to a second node, the second node being one of the above-described methods. Figure 1 The second node 120 shown can be included in the following step S301.

[0437] S301, transmit a reference signal and a data signal on the first resource element; the modulation mapping mode corresponding to the reference signal and / or the data signal is determined by the modulation control information.

[0438] Another signal transmission method proposed in this disclosure involves a second node transmitting a reference signal and a data signal on a first resource element. The modulation mapping scheme corresponding to the reference signal and / or the data signal is determined by modulation control information. In this way, the modulation schemes of the reference signal and the data signal can be flexibly configured through the modulation mapping scheme determined by the modulation control information, thereby achieving separation and optimization of the reference signal and the data signal in terms of signal space characteristics. This helps reduce mutual interference between the reference signal and the data signal, improves channel estimation accuracy, and enhances data demodulation performance.

[0439] The foregoing primarily describes the solution provided in this disclosure from the perspective of the interaction between various nodes. It is understood that each node, such as the first node or the second node, includes corresponding hardware structures and / or software modules to perform the aforementioned functions. Those skilled in the art should readily recognize that, based on the algorithmic steps of the examples described in conjunction with the embodiments disclosed herein, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0440] This disclosure embodiment can divide the first node or the second node into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosure embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each functional module according to each function.

[0441] Figure 4 This is a schematic diagram illustrating the composition of a communication device provided in an embodiment of this disclosure. Figure 4 As shown, the communication device 400 includes a receiving unit 401.

[0442] The communication device 400 can be the first node or a chip within the first node. When the communication device 400 is used to implement the functions of the first node in the above embodiments, each unit is specifically used to implement the following functions.

[0443] The receiving unit 401 is used to receive reference signals and data signals on the first resource element;

[0444] The modulation mapping method corresponding to the reference signal and / or data signal is determined by the modulation control information.

[0445] In some embodiments, N set1 The reference signal of each port and N set2 The data signals of each port are mapped onto the first resource element, N set1 Less than or equal to N set2 .

[0446] In some embodiments, modulation control information is used to indicate modulation mapping type; modulation mapping type includes a first type of modulation mapping method and / or a second type of modulation mapping method.

[0447] In some embodiments, the first type of modulation mapping method is used to generate a complex sequence corresponding to the reference signal, and the second type of modulation mapping method is used to generate complex modulation symbols corresponding to the data signal; or...

[0448] The second type of modulation mapping method is used to generate the complex sequence corresponding to the reference signal, while the first type of modulation mapping method is used to generate the complex modulation symbol corresponding to the data signal.

[0449] In some embodiments, the first type of modulation mapping method is a modulation mapping method based on a uniform modulation constellation; the second type of modulation mapping method is a modulation mapping method based on a non-uniform modulation constellation.

[0450] In some embodiments, the second type of modulation mapping scheme is determined based on the first type of modulation mapping scheme and an adjustment amount; the adjustment amount includes at least one of the following:

[0451] First additive adjustment, second additive adjustment, first multiplicative adjustment, second multiplicative adjustment.

[0452] In some embodiments, the real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping and a first multiplicative adjustment amount; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping; or,

[0453] The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping and the second multiplicative adjustment; or,

[0454] The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping and the first multiplicative adjustment amount; the real part of the second type of modulation mapping is generated based on the real part of the first type of modulation mapping and the second multiplicative adjustment amount.

[0455] In some embodiments, the real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping, a first multiplicative adjustment, and a first additive adjustment; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping; or,

[0456] The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping, the second multiplicative adjustment, and the second additive adjustment; or,

[0457] The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping, the first multiplicative adjustment amount, and the first additive adjustment amount; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping, the second multiplicative adjustment amount, and the second additive adjustment amount.

[0458] In some embodiments, the modulation control information includes an adjustment index, which indicates the value of the adjustment amount.

[0459] In some embodiments, the adjustment amount is the magnitude variable a and the complex exponential term e. jθb The product of the amplitude variable a and the phase variable b, which are determined based on the adjustment index.

[0460] In some embodiments, modulation control information includes a power ratio or power ratio index between a reference signal and a data signal; the power ratio or power ratio index is used to indicate the value of the adjustment amount, or there is a mapping relationship between the power ratio or power ratio index and the value of the adjustment amount.

[0461] In some embodiments, the modulation control information includes a power ratio index between the reference signal and the data signal, and a modulation coding scheme for the data signal; the power ratio index and the modulation coding scheme for the data signal are used to indicate the value of the adjustment amount, or there is a mapping relationship between the power ratio index, the modulation coding scheme for the data signal, and the value of the adjustment amount.

[0462] In some embodiments, the modulation control information includes a power ratio index between a reference signal and a data signal, a modulation coding scheme for the data signal, and bit information of the data signal;

[0463] The bit information of the data signal is used to indicate the phase variable of the first multiplicative adjustment and / or the phase variable of the second multiplicative adjustment;

[0464] The power ratio index and the modulation and coding scheme of the data signal are used to indicate at least one of the following: a first additive adjustment, a first additive adjustment, an amplitude variable of a first multiplicative adjustment, and an amplitude variable of a second multiplicative adjustment.

[0465] In some embodiments, the bit information of the data signal is two bits specified from the L bits corresponding to the complex modulation symbol, where L is greater than or equal to 2.

[0466] In some embodiments, the modulation control information includes a power ratio index between a reference signal and a data signal, a modulation coding scheme for the data signal, and bit information of the reference signal;

[0467] The bit information of the reference signal is used to indicate the phase variable of the first multiplicative adjustment and / or the phase variable of the second multiplicative adjustment;

[0468] The power ratio index and the modulation and coding scheme of the data signal are used to indicate at least one of the following: a first additive adjustment, a first additive adjustment, an amplitude variable of a first multiplicative adjustment, and an amplitude variable of a second multiplicative adjustment.

[0469] In some embodiments, the adjustment index is determined based on the location of the resource element, or the adjustment index is determined based on the location of the resource element and the port index.

[0470] In some embodiments, the adjustment index is determined based on at least one of a first index, a second index, and a third index.

[0471] In some embodiments, the first index is determined based on the frequency domain index of the resource element; or,

[0472] The first index is determined based on the frequency domain index of the resource element and the first factor; wherein, the first factor is determined based on at least one of the following: the number of adjustment values, the number of antennas, the number of ports, and a predefined first value.

[0473] In some embodiments, the second index is determined based on the time-domain index of the resource element; or,

[0474] The second index is determined based on the time-domain index of the resource element and a second factor; wherein the second factor is determined based on at least one of the following: the number of adjustment values, the number of antennas, the number of ports, and a predefined second value.

[0475] In some embodiments, the third index is determined based on the frequency domain index and time domain index of the resource element; or,

[0476] The third index is determined based on the frequency domain index, time domain index, and third factor of the resource element; the third factor is determined based on at least one of the following: the number of adjustment values, the number of antennas, the number of ports, and a predefined third value.

[0477] In some embodiments, the first port index set includes N set1 N corresponding to each port set1 The first set of port indices, the second set of port indices includes N. set2N corresponding to each port set2 There are two port indices; the first set of port indices is a subset of the second set of port indices.

[0478] In some embodiments, the port index in the first port set is determined based on the second port index set and reference signal port selection information;

[0479] The reference signal port selection information is used to indicate the port index in the second port index set that belongs to the first port index set.

[0480] In some embodiments, the i-th bit in the reference signal port selection information is used to indicate whether the i-th port index in the second port index set belongs to the first port index set.

[0481] In some embodiments, the second port index set includes at least one multiplexing group, and each multiplexing group includes at least one port index;

[0482] The λth bit in the reference signal port selection information is used to indicate whether the port index in the λth multiplex group of the second port index set belongs to the first port index set.

[0483] In some embodiments, each bit in the reference signal port selection information corresponds to a codeword;

[0484] The w-th bit in the reference signal port selection information is used to indicate whether the port index associated with codeword w in the second port index set belongs to the first port index set.

[0485] In some embodiments, the reference signal port selection information is used to indicate the value index of the first parameter;

[0486] The port indices in the first port index set are determined based on the port indices in the second port index set and the first parameter; or...

[0487] The second port index set includes at least one multiplexing group, and each multiplexing group includes at least one port index; the multiplexing group index corresponding to the port index in the first port index set is determined based on the multiplexing group index in the second port index set and the first parameter.

[0488] In some embodiments, the port index in the first port set is determined based on the second port index set and the first signaling index; the first signaling index is used to indicate the port index in the second port index set that belongs to the first port index set.

[0489] The first signaling includes at least one of the following:

[0490] Modulation coding scheme, number of port indices in the second port index set or number of transmission layers for the data signal, subcarrier spacing, and power ratio between the reference signal and the data signal.

[0491] In some embodiments, the first signaling includes a modulation and coding scheme; the first signaling index is used to indicate the value of the fourth factor K, and the fourth factor K is used to indicate the relationship between the number of port indices belonging to the first port index set in the second port index set and the number of port indices in the second port index set.

[0492] In some embodiments, the top K or top K in the second port index set Each port index belongs to the first port set;

[0493] Alternatively, the last K or last K in the second port index set Each port index belongs to the first port set;

[0494] Alternatively, the top K or top K port index values ​​in the second port index set. Each port index belongs to the first port set;

[0495] Alternatively, the top K or top K ports with the smallest port index values ​​in the second port index set. Each port index belongs to the first port set.

[0496] Figure 5 This is a schematic diagram illustrating the composition of another communication device provided in an embodiment of this disclosure. (See diagram below.) Figure 5 As shown, the communication device 500 includes a transmitting unit 501.

[0497] The communication device 500 can be the second node or a chip within the second node. When the communication device 500 is used to implement the functions of the second node in the above embodiments, each unit is specifically used to implement the following functions.

[0498] The transmitting unit 501 is used to transmit reference signals and data signals on the first resource element;

[0499] The modulation mapping method corresponding to the reference signal and / or data signal is determined by the modulation control information.

[0500] It should be noted that, Figure 4 and Figure 5 The units within can also be called modules; for example, a transmitting unit can be called a transmitting module. Additionally, in... Figure 4 and Figure 5 In the embodiments shown, the names of the various units may not be the same as those shown in the figures. For example, the transmitting unit may also be called the communication unit, and the receiving unit may also be called the communication unit.

[0501] Figure 4 and Figure 5 If the various units in the present disclosure are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this disclosure, in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this disclosure. Storage media for storing computer software products include various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0502] When the communication device 400 or communication device 500 implements the functions of the integrated module in hardware, this disclosure provides a schematic diagram of the structure of a communication device. For example... Figure 6 As shown, the communication device 600 includes: a processor 602, a communication interface 603, and a bus 604. Optionally, the communication device 600 may also include a memory 601.

[0503] Processor 602 may implement or execute various exemplary logic blocks, modules, and circuits described in connection with embodiments of this disclosure. Processor 602 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in connection with embodiments of this disclosure. Processor 602 may also be a combination that implements computing functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0504] Communication interface 603 is used to connect to other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0505] The memory 601 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0506] In one possible implementation, the memory 601 can exist independently of the processor 602. The memory 601 can be connected to the processor 602 via a bus 604 and is used to store instructions or program code. When the processor 602 calls and executes the instructions or program code stored in the memory 601, it can implement the signal transmission method provided in the embodiments of this disclosure.

[0507] In another possible implementation, the memory 601 can also be integrated with the processor 602.

[0508] Bus 604 can be an extended industry standard architecture (EISA) bus, etc. Bus 604 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 6 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0509] Through the above description of the implementation methods, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the first node or the second node can be divided into different functional modules to complete all or part of the functions described above.

[0510] This disclosure also provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be executed by computer instructions instructing related hardware. The program can be stored in the computer-readable storage medium, and when executed, it can include the processes of the above method embodiments. The computer-readable storage medium can also be an external storage device for the first or second node, such as a pluggable hard drive, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the first or second node. Further, the computer-readable storage medium can include both internal storage units of the first or second node and external storage devices. The computer-readable storage medium is used to store the computer program and other programs and data required by the first or second node. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

[0511] This disclosure also provides a computer program product comprising a computer program that, when run on a computer, causes the computer to perform any of the signal transmission methods provided in the above embodiments.

[0512] Although this disclosure has been described herein in conjunction with various embodiments, those skilled in the art will understand and implement other variations of the disclosed embodiments by reviewing the accompanying drawings, the disclosure, and the appended claims in carrying out the claimed disclosure. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce a good effect.

[0513] Although this disclosure has been described in conjunction with specific features and embodiments, it will be apparent that various modifications and combinations can be made therein without departing from the spirit and scope of this disclosure. Accordingly, this specification and drawings are merely exemplary illustrations of the disclosure as defined by the appended claims and are to be considered as covering any and all modifications, variations, combinations, or equivalents within the scope of this disclosure. It is obvious that those skilled in the art can make various alterations and modifications to this disclosure without departing from its spirit and scope. Thus, this disclosure is also intended to include any such modifications and modifications that fall within the scope of the claims of this disclosure and their equivalents.

[0514] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A signal transmission method, characterized in that, Applied to the first node, the method includes: Receive reference signals and data signals from the first resource element; The modulation mapping mode corresponding to the reference signal and / or the data signal is determined by the modulation control information.

2. The method according to claim 1, characterized in that, N set1 The reference signal of each port and N set2 The data signals of each port are mapped onto the first resource element, N set1 Less than or equal to N set2 .

3. The method according to claim 1, characterized in that, The modulation control information is used to indicate the modulation mapping type; the modulation mapping type includes a first type of modulation mapping method and / or a second type of modulation mapping method.

4. The method according to claim 3, characterized in that, The first type of modulation mapping method is used to generate the complex sequence corresponding to the reference signal, and the second type of modulation mapping method is used to generate the complex modulation symbols corresponding to the data signal; or, The second type of modulation mapping method is used to generate the complex sequence corresponding to the reference signal, and the first type of modulation mapping method is used to generate the complex modulation symbol corresponding to the data signal.

5. The method according to claim 3, characterized in that, The first type of modulation mapping method is a modulation mapping method based on a uniform modulation constellation; the second type of modulation mapping method is a modulation mapping method based on a non-uniform modulation constellation.

6. The method according to claim 3, characterized in that, The second type of modulation mapping scheme is determined based on the first type of modulation mapping scheme and the adjustment amount; the adjustment amount includes at least one of the following: First additive adjustment, second additive adjustment, first multiplicative adjustment, second multiplicative adjustment.

7. The method according to claim 6, characterized in that, The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping and the first multiplicative adjustment; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping; or, The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping and the second multiplicative adjustment amount; or, The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping and the first multiplicative adjustment amount; the real part of the second type of modulation mapping is generated based on the real part of the first type of modulation mapping and the second multiplicative adjustment amount.

8. The method according to claim 6, characterized in that, The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping, the first multiplicative adjustment, and the first additive adjustment; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping; or, The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping, the second multiplicative adjustment, and the second additive adjustment; or, The real part of the second type of modulation mapping is determined based on the real part of the first type of modulation mapping, the first multiplicative adjustment amount, and the first additive adjustment amount; the imaginary part of the second type of modulation mapping is determined based on the imaginary part of the first type of modulation mapping, the second multiplicative adjustment amount, and the second additive adjustment amount.

9. The method according to claim 6, characterized in that, The modulation control information includes an adjustment index, which indicates the value of the adjustment amount.

10. The method according to claim 9, characterized in that, The adjustment amount is the magnitude variable a and the complex exponential term e. jθb The product of the amplitude variable a and the phase variable b, which are determined based on the adjustment index.

11. The method according to claim 6, characterized in that, The modulation control information includes the power ratio or power ratio index between the reference signal and the data signal; the power ratio or power ratio index is used to indicate the value of the adjustment amount, or there is a mapping relationship between the power ratio or power ratio index and the value of the adjustment amount.

12. The method according to claim 6, characterized in that, The modulation control information includes a power ratio index between the reference signal and the data signal, and a modulation coding scheme for the data signal; the power ratio index and the modulation coding scheme for the data signal are used to indicate the value of the adjustment amount, or there is a mapping relationship between the power ratio index, the modulation coding scheme for the data signal, and the value of the adjustment amount.

13. The method according to claim 6, characterized in that, The modulation control information includes the power ratio index between the reference signal and the data signal, the modulation coding scheme of the data signal, and the bit information of the data signal; The bit information of the data signal is used to indicate the phase variable of the first multiplicative adjustment and / or the phase variable of the second multiplicative adjustment. The power ratio index and the modulation and coding scheme of the data signal are used to indicate at least one of the following: a first additive adjustment, a first additive adjustment, an amplitude variable of a first multiplicative adjustment, and an amplitude variable of a second multiplicative adjustment.

14. The method according to claim 13, characterized in that, The bit information of the data signal is two bits specified from the L bits corresponding to the complex modulation symbol, where L is greater than or equal to 2.

15. The method according to claim 6, characterized in that, The modulation control information includes the power ratio index between the reference signal and the data signal, the modulation coding scheme of the data signal, and the bit information of the reference signal; The bit information of the reference signal is used to indicate the phase variable of the first multiplicative adjustment and / or the phase variable of the second multiplicative adjustment. The power ratio index and the modulation and coding scheme of the data signal are used to indicate at least one of the following: a first additive adjustment, a first additive adjustment, an amplitude variable of a first multiplicative adjustment, and an amplitude variable of a second multiplicative adjustment.

16. The method according to claim 9, characterized in that, The adjustment amount index is determined based on the location of the resource element, or the adjustment amount index is determined based on the location and port index of the resource element.

17. The method according to claim 16, characterized in that, The adjustment index is determined based on at least one of the first index, the second index, and the third index.

18. The method according to claim 17, characterized in that, The first index is determined based on the frequency domain index of the resource element; or, The first index is determined based on the frequency domain index of the resource element and a first factor; wherein the first factor is determined based on at least one of the following: the number of adjustment values, the number of antennas, the number of ports, and a predefined first value.

19. The method according to claim 17, characterized in that, The second index is determined based on the time-domain index of the resource element; or, The second index is determined based on the time-domain index of the resource element and a second factor; wherein the second factor is determined based on at least one of the following: the number of adjustment values, the number of antennas, the number of ports, and a predefined second value.

20. The method according to claim 17, characterized in that, The third index is determined based on the frequency domain index and time domain index of the resource element; or, The third index is determined based on the frequency domain index, time domain index, and third factor of the resource element; the third factor is determined based on at least one of the following: the number of adjustment values, the number of antennas, the number of ports, and a predefined third value.

21. The method according to claim 2, characterized in that, The first port index set includes the N set1 N corresponding to each port set1 The first set of port indices includes the N port indices. set2 N corresponding to each port set2 There are two port indexes; the first set of port indexes is a subset of the second set of port indexes.

22. The method according to claim 21, characterized in that, The port index in the first port set is determined based on the second port index set and the reference signal port selection information; The reference signal port selection information is used to indicate the port index in the second port index set that belongs to the first port index set.

23. The method according to claim 22, characterized in that, The i-th bit in the reference signal port selection information is used to indicate whether the i-th port index in the second port index set belongs to the first port index set.

24. The method according to claim 22, characterized in that, The second port index set includes at least one multiplexing group, and each multiplexing group includes at least one port index; The λth bit in the reference signal port selection information is used to indicate whether the port index in the λth multiplex group of the second port index set belongs to the first port index set.

25. The method according to claim 22, characterized in that, Each bit in the reference signal port selection information corresponds to a codeword; The w-th bit in the reference signal port selection information is used to indicate whether the port index associated with codeword w in the second port index set belongs to the first port index set.

26. The method according to claim 22, characterized in that, The reference signal port selection information is used to indicate the value index of the first parameter; The port indices in the first port index set are determined based on the port indices in the second port index set and the first parameter; or, The second port index set includes at least one multiplexing group, and each multiplexing group includes at least one port index; the multiplexing group index corresponding to the port index in the first port index set is determined based on the multiplexing group index in the second port index set and the first parameter.

27. The method according to claim 21, characterized in that, The port index in the first port set is determined based on the second port index set and the first signaling index; the first signaling index is used to indicate the port index in the second port index set that belongs to the first port index set. The first signaling includes at least one of the following: Modulation coding scheme, number of port indices in the second port index set or number of transmission layers for the data signal, subcarrier spacing, and power ratio between the reference signal and the data signal.

28. The method according to claim 27, characterized in that, The first signaling includes a modulation and coding scheme; the first signaling index is used to indicate the value of the fourth factor K, and the fourth factor K is used to indicate the relationship between the number of port indices belonging to the first port index set in the second port index set and the number of port indices in the second port index set.

29. The method according to claim 27, characterized in that, The first K or first K in the second port index set Each port index belongs to the first port set; Alternatively, the last K or last K in the second port index set Each port index belongs to the first port set; Alternatively, the top K or top K port index values ​​in the second port index set. Each port index belongs to the first port set; Alternatively, the top K or top K ports with the smallest port index values ​​in the second port index set. Each port index belongs to the first port set.

30. A signal transmission method, characterized in that, Applied to the second node, the method includes: Send reference signals and data signals on the first resource element; The modulation mapping mode corresponding to the reference signal and / or the data signal is determined by the modulation control information.

31. A communication device, characterized in that, include: Memory and processor; The memory stores instructions that the processor can execute; When the processor is configured to execute the instructions, it causes the communication device to implement the method as described in any one of claims 1-30.

32. A readable storage medium, characterized in that, include: Software instructions; When the software instructions are executed in the communication device, the communication device causes the communication device to implement the method as described in any one of claims 1-30.

33. A computer program product, characterized in that, include: Computer instructions; When the computer instructions are executed in the communication device, the communication device causes the communication device to perform the method as described in any one of claims 1-30.

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