A data transmission method, device, storage medium and program product

Abstract

Embodiments of the present disclosure provide a data transmission method and device, a storage medium and a program product, relating to the technical field of communication, which can allocate power of demodulation reference signals and data. The method is applied to a first communication node, and includes: obtaining a first parameter. The first parameter is used to represent a ratio between power of a first signal and power of data corresponding to the first signal. Based on the first parameter, the first signal and the data are transmitted to a second communication node.

Description

Technical Field

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

[0002] In wireless communication scenarios, when the transmitting end sends data to the receiving end, it also transmits a demodulation reference signal corresponding to the data. This demodulation reference signal is used by the receiving end to demodulate the data, which can reduce the difficulty of demodulating the data.

[0003] How to allocate the power of the demodulation reference signal and the data when the transmitter sends data to the receiver has become an urgent problem to be solved. Summary of the Invention

[0004] This disclosure provides a data transmission method, apparatus, storage medium, and program product that can allocate power between reference signals and data.

[0005] On one hand, a data transmission method is provided, applied to a first communication node, comprising: acquiring a first parameter. The first parameter characterizes the ratio between the power of transmitting a first signal and the power of the data corresponding to the first signal. Based on the first parameter, the first signal and data are transmitted to a second communication node.

[0006] On another front, a data transmission method is provided, applied to a second communication node, comprising: receiving a first signal and data corresponding to the first signal transmitted by a first communication node. The ratio between the power of the received first signal and the power of the received data is a first parameter.

[0007] In another aspect, a communication device is provided, applied to a first communication node, the device comprising: a transmission module. The transmission module is configured to acquire a first parameter. The first parameter characterizes the ratio between the power of transmitting a first signal and the power of the data corresponding to the first signal. The transmission module is further configured to transmit the first signal and data to a second communication node based on the first parameter.

[0008] In another aspect, a communication device is provided for use in a second communication node, the device comprising: a transmission module. The transmission module is configured to receive a first signal and corresponding data transmitted by a first communication node. The ratio between the power of the received first signal and the power of the received data is a first parameter.

[0009] In another aspect, a communication device is provided, comprising: a memory and a processor. The memory and the processor are coupled. The memory is used to store a computer program. When the processor executes the computer program, it implements the data transmission method of any of the above embodiments.

[0010] In another aspect, a computer-readable storage medium is provided, on which computer program instructions are stored, which, when executed by a processor, implement the data transmission method of any of the above embodiments.

[0011] In another aspect, a computer program product is provided, which includes computer program instructions that, when executed, implement the data transmission method of any of the above embodiments.

[0012] In this embodiment, the first communication node can obtain a first parameter representing the ratio between the power of transmitting the first signal and the power of the data corresponding to the first signal. Further, based on the first parameter, the first signal and data are transmitted to the second communication node. That is, the larger the ratio between the power of transmitting the first signal and the power of the data corresponding to the first signal, the greater the power allocated to the first signal, and thus the smaller the power allocated to the data, and vice versa. This achieves the allocation of power between the demodulation reference signal and the data when the transmitting end transmits data to the receiving end. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 A schematic diagram of a data transmission system provided for some embodiments of this disclosure;

[0015] Figure 2 A flowchart illustrating a data transmission method provided in some embodiments of this disclosure;

[0016] Figure 3 A flowchart illustrating another data transmission method provided in some embodiments of this disclosure;

[0017] Figure 4 A flowchart illustrating another data transmission method provided in some embodiments of this disclosure;

[0018] Figure 5 A flowchart illustrating another data transmission method provided in some embodiments of this disclosure;

[0019] Figure 6 A flowchart illustrating another data transmission method provided in some embodiments of this disclosure;

[0020] Figure 7 A flowchart illustrating another data transmission method provided in some embodiments of this disclosure;

[0021] Figure 8 A schematic diagram of the structure of a communication device provided in some embodiments of this disclosure. Figure 1 ;

[0022] Figure 9 A schematic diagram of the structure of a communication device provided in some embodiments of this disclosure. Figure 2 ;

[0023] Figure 10 A schematic diagram of the structure of a communication device provided in some embodiments of this disclosure. Figure 3 . Detailed Implementation

[0024] The technical solutions of this disclosure will now be clearly and completely described 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 skilled in the art without creative effort are within the scope of protection of this disclosure.

[0025] It should be noted that, in this disclosure, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. 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 concrete manner.

[0026] Hereinafter, 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.

[0027] In the description of this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "more than one" means two or more.

[0028] Wireless channels are time-varying channels with multipath delay, varying in both the time and frequency domains. These channel variations cause changes in the data received relative to the data transmitted, making demodulation difficult. Simultaneously, the transmitter transmits a reference signal corresponding to the data. This reference signal is used for demodulation, reducing the difficulty of demodulation. Since the reference signal accompanying the data undergoes similar or identical channel variations during transmission, data can be demodulated based on the transmitted reference signal, further simplifying the demodulation process.

[0029] The reference signal transmitted by the transmitter is known to the receiver. The receiver can demodulate the data based on the transmitted reference signal in various ways. For example, one method is for the receiver to estimate the traversed channel using the received reference signal and the known reference signal transmitted by the transmitter, and then demodulate the received data based on the estimated channel. Another method is to directly use the received data, the received reference signal, and the known reference signal transmitted by the transmitter, performing joint processing to obtain the demodulated data.

[0030] The data transmission process can be varied. For example, source data undergoes error correction coding and symbol modulation, then is combined with a reference signal and transmitted by the transmitter. The receiver receives the data and reference signal that have passed through the channel, then demodulates the received data based on the received reference signal and the anticipated reference signal transmitted by the transmitter, and then performs error correction decoding on the demodulated data to obtain the source data from the transmitter. Alternatively, source data may undergo error correction coding and symbol modulation, then be combined with a reference signal and transmitted by the transmitter. The receiver receives the data and reference signal that have passed through the channel, then demodulates and decodes the received data based on the received reference signal and the anticipated reference signal transmitted by the transmitter. In this case, demodulation and decoding are combined into one process to obtain the decoded source data.

[0031] For example, after error correction coding and symbol modulation, the source data is combined with a reference signal and transmitted together by the transmitter. Error correction coding and symbol modulation are combined into one process. The receiver receives the data and reference signal that have passed through the channel, and then demodulates and decodes the received data based on the received reference signal and the predicted reference signal transmitted by the transmitter. Demodulation and decoding are combined into one process to obtain the decoded source data. In cases where error correction coding and symbol modulation are combined into one process and cannot be clearly distinguished, the modulation in this disclosure includes both data encoding and symbol modulation, without further distinguishing between encoding and modulation. Similarly, in cases where demodulation and decoding are combined into one process and cannot be clearly distinguished, the demodulation in this disclosure includes both data demodulation and decoding, without further distinguishing between demodulation and decoding.

[0032] During data transmission, the transmitter combines the modulated data and the reference signal and transmits them together. There are several ways to combine and transmit the data and reference signal together. One method is that the resource element (RE) where the reference signal is located is different from the resource element where the data is located, yet they are transmitted together. For example, in an orthogonal frequency division multiplexing (OFDM) wireless communication system, the reference signal and data are located on different resource elements. There are also several ways for the reference signal and data to be located on different resource elements. One method is that the reference signal and data are located on different time domain units. For example, the reference signal and data are located on different OFDM symbols. Another method is that the reference signal and data are located on different frequency domain units. For example, the reference signal and data are located on different subcarriers. Yet another method is that the reference signal and data are located in the same time domain unit but different frequency domain units. For example, the reference signal and data are located on the same OFDM symbol but different subcarriers. And yet another method is that the reference signal and data are located in the same frequency domain unit but different time domain units. For example, the reference signal and the data are located on the same subcarrier, but on different OFDM symbols.

[0033] The resource elements corresponding to the reference signal and the data are different, and the time-frequency position of the reference signal is close to that of the data. For example, the time-domain unit corresponding to the reference signal is different from that of the data, with the reference signal's time-domain unit preceding the data's time-domain unit, so as to obtain the channel or channel coefficients from the reference signal as early as possible, thereby demodulating the data earlier. Alternatively, the time-domain unit of the reference signal may be later than the earliest data's time-domain unit but earlier than the latest data's time-domain unit, so that the channel condition of the reference signal is as close as possible to the channel condition of the data, thereby improving the accuracy of the demodulated data.

[0034] For example, the position of the time-domain unit of the reference signal is determined based on the positions of the earliest and latest data's time-domain units. This balances the demodulation performance of both the earliest and latest data. One approach is to use the average of the indexes of the earliest and latest data's time-domain units, or the rounded value of that average, as the index number of the reference signal's time-domain unit. Another approach is to use the average of the indexes of the earliest and latest data's time-domain units plus an offset, or the rounded value of that average plus an offset. Here, the offset represents the duration of channel measurement or the duration of data demodulation that needs to be performed in advance.

[0035] Another approach is to use the average of the time-domain cell indexes of all data, or the rounded-down value of that average, as the position index of the reference signal's time-domain cell. For example, the frequency-domain cells corresponding to the reference signal and the data may differ; the reference signal's frequency-domain cells may be lower than or higher than the data's. Alternatively, the reference signal's frequency-domain cells may be higher than the lowest data's frequency-domain cells and lower than the highest data's frequency-domain cells, to make the channel conditions of the reference signal as close as possible to the data's channel conditions, thereby improving the accuracy of the demodulated data.

[0036] For example, the position of the frequency domain unit of the reference signal is determined based on the positions of the frequency domain units of the lowest and highest data. This balances the demodulation performance of both the lowest and highest data. One approach is to use the average of the indexes of the frequency domain units of the lowest and highest data, or the rounded value of that average. Another approach is to use the average of the indexes of the frequency domain units of the lowest and highest data, plus an offset, or the rounded value of that average plus an offset. The offset value represents the frequency domain unit of the measurement channel that needs adjustment. Yet another approach is to use the average of the indexes of the frequency domain units of the reference signal, or the rounded value of that average.

[0037] Another approach is that the resource element where the reference signal is located is part or all of the resource element where the data is located. For example, in an OFDM wireless communication system, the resource element where the reference signal is located is part or all of the resource element where the data is located.

[0038] Another approach is that a portion of the resource elements where the reference signals are located are different from the resource elements where the data is located, while another portion of the resource elements where the reference signals are located are part of the resource elements where the data is located.

[0039] Another approach is that some of the resource elements where the reference signals are located are different from the resource elements where the data is located, while other parts of the resource elements where the reference signals are located are all of the resource elements where the data is located.

[0040] However, the total power of the transmitted data and reference signal is always constrained. For example, it may be limited by the maximum power of the equipment, the coverage area of ​​the scene, or the coordination of inter-cell interference. Therefore, the total power of the transmitted data can be considered a constant. The transmitted reference signal and data are also affected by external interference and noise.

[0041] On the one hand, if the reference signal is allocated too much power, its signal-to-noise ratio (SINR) increases, resulting in a wider and more accurate channel estimate, which is more beneficial for demodulating data. However, this leads to less power allocated to the data, reducing the data's SINR and decreasing the amount of source information carried by the received data. On the other hand, if the reference signal is allocated too little power, its SINR decreases, resulting in a narrower and worse channel estimate, which is detrimental to data demodulation. However, if the data is allocated too much power, its SINR increases, and the amount of source information carried by the received data increases.

[0042] Therefore, coordinating the power distribution between reference signals and data during transmission is a crucial problem for future communication development. To address this issue, this disclosure provides a data transmission method that determines a power ratio A based on parameter information (e.g., time-domain parameters related to the corresponding data, time-domain parameters related to the reference signal, frequency-domain parameters related to the corresponding data, and frequency-domain parameters related to the demodulated reference signal). Furthermore, the reference signal and corresponding data are transmitted according to the power ratio A, thus coordinating the power distribution between them. Specifically, A is the ratio of the power of the reference signal in one time-frequency resource unit (i.e., a time-domain unit or a frequency-domain unit) to the power of the data in one time-frequency resource. The reference signal and corresponding data are transmitted according to this power ratio. This achieves coordinated power distribution between the reference signal and corresponding data during transmission.

[0043] For example, such as Figure 1 The diagram shown is a schematic representation of a data transmission system provided in an embodiment of this disclosure. The data transmission system may include a first communication node 101 and a second communication node 102. There may be one or more first communication nodes 101 and second communication nodes 102, and the number is not limited.

[0044] The first communication node 101 and the second communication node 102 are connected. The first communication node 101 is used to send indication information to the second communication node 102, and to transmit a reference signal and data corresponding to the reference signal to the second communication node 102 based on a first parameter (i.e., power ratio A).

[0045] The second communication node 102 is used to receive indication information sent by the first communication node 101, receive reference signals and data corresponding to the reference signals transmitted by the first communication node 101 based on the indication information, and demodulate the data corresponding to the reference signals based on the reference signals.

[0046] It should be noted that the instruction information may include one or a combination of the following:

[0047] (1) Information on the frequency domain units carrying the data. This information can be used to obtain the number and / or location of the frequency domain units. For example, this information can be used to obtain the number and / or location of the subcarriers carrying the data. As another example, this information can be used to obtain the number and / or location of the resource blocks (RBs) carrying the data.

[0048] (2) Information on the time-domain units carrying the data. This information can be used to obtain the number and / or location of the time-domain units. For example, this information can be used to obtain the number and / or location of the OFDM symbols carrying the data. As another example, this information can be used to obtain the number and / or location of the time slots carrying the data.

[0049] (3) Information about the resource elements that carry the data. This information can be used to obtain the number of resource elements that carry the data and / or the location of the resource elements that carry the data.

[0050] (4) Information on the frequency domain units carrying the reference signal. This information can be used to obtain the number and / or location of the frequency domain units. For example, this information can be used to obtain the number and / or location of the subcarriers carrying the reference signal. As another example, this information can be used to obtain the number and / or location of the resource blocks carrying the reference signal.

[0051] (5) Information on the time-domain units carrying the reference signal. This information can be used to obtain the number and / or location of the time-domain units. For example, this information can be used to obtain the number and / or location of the OFDM symbols carrying the reference signal. As another example, this information can be used to obtain the number and / or location of the time slots carrying the reference signal.

[0052] (6) Information on the resource elements carrying the reference signal. This information can be used to obtain the number of resource elements carrying the reference signal and / or the location of the resource elements carrying the reference signal.

[0053] (7) Information on the frequency domain units carrying the reference signal and corresponding data. This information can be used to obtain the number and / or location of the frequency domain units carrying the reference signal and corresponding data. For example, this information can be used to obtain the number and / or location of the subcarriers carrying the reference signal and corresponding data. As another example, this information can be used to obtain the number and / or location of the resource blocks carrying the reference signal and corresponding data.

[0054] (8) Information on the time-domain units carrying the reference signal and corresponding data. This information can be used to obtain the number and / or location of the time-domain units carrying the reference signal and corresponding data. For example, this information can be used to obtain the number and / or location of the OFDM symbols carrying the reference signal and corresponding data. As another example, this information can be used to obtain the number and / or location of the time slots carrying the reference signal and corresponding data.

[0055] (9) Information on resource elements carrying reference signals and corresponding data. This information can be used to obtain the number of resource elements carrying demodulated reference signals and corresponding data and / or the location of resource elements carrying reference signals and corresponding data.

[0056] (10) Information on the code domain units carrying the demodulation reference signal. This information can be used to obtain the number and / or location of the code domain units. For example, this information can be used to obtain the number and / or location of the code division multiplexing groups carrying the demodulation reference signal.

[0057] It should be noted that in wireless communication scenarios, the first communication node and the second communication node communicate via a wireless channel. In this embodiment, the first communication node can be a terminal, and the second communication node can be a base station; the base station and the terminal communicate via a wireless channel. For example, the first communication node can be a terminal, and the second communication node can be a wireless router; the wireless router and the terminal communicate via a wireless channel. Alternatively, the first communication node can be a first base station, and the second communication node can be a second base station; the first base station and the second base station communicate via a wireless channel. Another example is that the first communication node can be a first terminal, and the second communication node can be a second terminal; the first terminal and the second terminal communicate via a wireless channel. Yet another example is that the first communication node can be a repeater, and the second communication node can be a base station; the base station and the repeater communicate via a wireless channel. Finally, the first communication node can be a terminal, and the second communication node can be a repeater; the repeater and the terminal communicate via a wireless channel.

[0058] For example, the first communication node can be a first repeater, and the second communication node can be a second repeater, with the first repeater and the second repeater communicating via a wireless channel. Alternatively, the first communication node can be a base station, and the second communication node can be a satellite, with the satellite and the base station communicating via a wireless channel. Another example is that the first communication node can be a satellite, and the second communication node can be a base station, with the base station and the satellite communicating via a wireless channel. Yet another example is that the first communication node can be a terminal, and the second communication node can be a satellite, with the satellite and the terminal communicating via a wireless channel. Similarly, the first communication node can be a satellite, and the second communication node can be a terminal, with the terminal and the satellite communicating via a wireless channel. Furthermore, the first communication node can be ground equipment, and the second communication node can be an aircraft, with the aircraft and the ground equipment communicating via a wireless channel. Finally, the first communication node can be a first aircraft, and the second communication node can be a second aircraft, with the first aircraft and the second aircraft communicating via a wireless channel. This disclosure does not limit the specific devices that the first and second communication nodes can be.

[0059] It should be noted that a terminal can be any device with wireless transceiver capabilities. 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, A-IoT device, access terminal, UE unit, UE station, mobile station, mobile station, remote station, transmitter, remote terminal, mobile device, UE terminal, wireless communication device, UE agent, or UE device, etc., and the embodiments of this disclosure do not limit this to these terms.

[0060] Base stations can be base stations in Long Term Evolution (LTE), Long Term Evolution Advanced (LTEA), or Evolutionary Node Bs (eNBs or eNodeBs), base station equipment (gNBs) in 5G networks, or base stations in future communication systems. Base stations can include various macro base stations, micro base stations, femtocell base stations, wireless remote extensions, reconfigurable intelligent surfaces (RISs), routers, relay stations, transmission and reception points (TRPs), receivers, access points, wireless fidelity (Wi-Fi) devices, and other network-side equipment. Base stations can sometimes be referred to as readers / writers used for communication with terminals; however, this disclosure does not limit this terminology.

[0061] It should be noted that, Figure 1 This is just an example framework diagram. Figure 1 The number of devices included and the names of each device are unlimited.

[0062] The application scenarios of the embodiments disclosed herein are not limited. The system architecture and business scenarios described in the embodiments of this disclosure are for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of this disclosure. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this disclosure are also applicable to similar technical problems.

[0063] Figure 2 A flowchart illustrating a data transmission method is shown, such as... Figure 2 As shown, this data transmission method is applied to the first communication node, including S201-S202:

[0064] S201, Obtain the first parameter.

[0065] S202. Based on the first parameter, send the first signal and data to the second communication node.

[0066] The first parameter is used to characterize the ratio between the power of transmitting the first signal and the power of the data corresponding to the first signal.

[0067] In other words, the larger the ratio between the power of the first signal and the power of the corresponding data, the greater the power allocated to the first signal, and the smaller the power allocated to the data, and vice versa. This achieves the allocation of power between the reference signal and the data when the transmitting end (i.e., the first communication node in this disclosure) transmits data to the receiving end (i.e., the second communication node in this disclosure).

[0068] In some embodiments, the first signal in this disclosure may be a demodulation reference signal (DM-RS). A demodulation reference signal is a reference signal used in a communication system to help the receiver correctly demodulate a signal.

[0069] In some embodiments, the first parameter may also be referred to as the power ratio A. Transmitting the demodulated reference signal and corresponding data according to the power ratio A can mean that the ratio of the power of the demodulated reference signal in one time-frequency resource unit to the power of the data in one time-frequency resource unit is A. One way to express the power ratio A of the demodulated reference signal and data is as the ratio of the average power of the reference signal in one time-frequency resource unit to the average power of the data in one time-frequency resource unit. The time-frequency resource unit can be a time-domain unit or a frequency-domain unit.

[0070] In some embodiments, the transmission of the demodulated reference signal and corresponding data according to a power ratio A can be represented by multiplying each element of the demodulated reference signal sequence by a coefficient B for transmission. Here, B represents the amplitude corresponding to the power ratio A. For example, B can be the square root of A, or B can be a power of 1 / 2 of A.

[0071] Another way to transmit the demodulated reference signal and corresponding data according to the power ratio A is as follows: each element in the data sequence is multiplied by a coefficient C for transmission. Here, C is the reciprocal of the amplitude corresponding to the power ratio A, or C is the amplitude corresponding to the reciprocal of the power ratio A. For example, B is the reciprocal of the square root of A, or B is the square root of the reciprocal of A, or B is A raised to the power of -1 / 2, or B is A raised to the power of -1 / 2.

[0072] In some embodiments, the demodulation reference signal and the corresponding data are transmitted at a power ratio A, which is equivalent to the corresponding data and the demodulation reference signal being transmitted at a power ratio D, where D is the reciprocal of A.

[0073] One way to represent the transmission of corresponding data and demodulated reference signals according to a power ratio D is as follows: each element in the data sequence is multiplied by a coefficient F for transmission. Here, F represents the amplitude corresponding to the power ratio D. For example, F can be the square root of D, or F can be D raised to the power of 1 / 2.

[0074] Another way to transmit corresponding data and demodulated reference signals according to a power ratio D is as follows: each element in the data sequence is multiplied by a coefficient G for transmission. Here, G is the reciprocal of the amplitude corresponding to the power ratio D, or G is the amplitude corresponding to the reciprocal of the power ratio D. For example, G is the reciprocal of the square root of D, or G is the square root of the reciprocal of D, or G is a power of -1 / 2 of D, or G is a power of -1 / 2 of D.

[0075] It is understood that power and energy are closely related, and coordinating the allocation of power can be expressed as coordinating the allocation of energy. Similarly, coordinating the allocation of energy can also be expressed as coordinating the allocation of power. In this disclosure, power and energy are considered to have the same meaning. That is, transmitting the demodulation reference signal and corresponding data according to a power ratio A is equivalent to transmitting the demodulation reference signal and corresponding data according to an energy ratio A. In other words, the ratio of the energy of the demodulation reference signal in one time-frequency resource unit to the energy of the data in one time-frequency resource unit is A, and the demodulation reference signal and corresponding data are transmitted according to an energy ratio A. Here, the power ratio A is also the energy ratio A.

[0076] Similarly, transmitting the corresponding data and demodulated reference signal according to a power ratio D is equivalent to transmitting them according to an energy ratio D. That is, the ratio of the energy of the data in one time-frequency resource unit to the energy of the reference signal in one time-frequency resource unit is D. Here, the power ratio D is also the energy ratio D. Conversely, transmitting the demodulated reference signal and corresponding data according to an energy ratio A is equivalent to transmitting them according to a power ratio A. That is, the ratio of the power of the demodulated reference signal in one time-frequency resource unit to the power of the data in one time-frequency resource unit is A, and the demodulated reference signal and corresponding data are transmitted according to a power ratio A. Here, the energy ratio A is also the power ratio A. Likewise, transmitting the corresponding data and demodulated reference signal according to an energy ratio D is equivalent to transmitting them according to a power ratio D. That is, the ratio of the power of the data in one time-frequency resource unit to the power of the demodulated reference signal in one time-frequency resource unit is D. Here, the energy ratio D is also the power ratio D.

[0077] It should be noted that the first parameter can be determined by the first communication node itself, or determined by the second communication node and sent to the first communication node, or determined by a communication node other than the first and second communication nodes and sent to the first communication node. This disclosure does not limit the entity that determines the first parameter.

[0078] In some embodiments, the first communication node may send indication information to the second communication node, and send data and a first signal corresponding to the data to the second communication node according to the indication information. The first signal and the corresponding data are transmitted at a power ratio A. The first signal is used for demodulation of the corresponding data.

[0079] When the first communication node is a terminal, the second communication node can be a base station. When the second communication node is a terminal, the first communication node can be a base station.

[0080] It should be noted that the content of the instruction information can be referred to the description in the above embodiments.

[0081] In some embodiments, the first parameter is determined based on the second parameter. The second parameter is used to characterize the number of resource elements carrying data or the number of resource elements carrying data and the first signal.

[0082] In other words, the first parameter can be determined based on the number of resource elements carrying the data. This is because the demodulation reference signal is used to demodulate the corresponding data. The more resource elements carrying the data, the wider the required range of channel estimation should be to facilitate data demodulation. The closer the resource element carrying the demodulation reference signal is to the resource element carrying the corresponding data, the smaller the range of channel estimation for the demodulation reference signal. The farther the resource element carrying the demodulation reference signal is from the resource element carrying the corresponding data, the wider the range of channel estimation for the demodulation reference signal. The range of channel estimation for the demodulation reference signal is related to the power ratio A; a larger power ratio A corresponds to a wider range of channel estimation, and a smaller power ratio A corresponds to a smaller range of channel estimation. Therefore, the more resource elements carrying the demodulation reference signal, the more units of the demodulation reference signal participating in data demodulation on the resource elements, the better the channel estimation effect or the better the data demodulation effect. To maintain the same level of performance, a smaller power ratio A is required.

[0083] It can be seen that the power ratio A is related to the number of resource elements carrying the demodulation reference signal and / or the distance between the resource elements carrying the demodulation reference signal and the resource elements carrying the corresponding data. Since the number of resource elements carrying the demodulation reference signal and / or the distance between the resource elements carrying the demodulation reference signal and the resource elements carrying the corresponding data may be related to the number of resource elements carrying the data, the power ratio A can be determined based on the number of resource elements carrying the data.

[0084] In summary, determining the power ratio A based on the number of resource elements carrying the data allows for a reasonable allocation of power between the demodulation reference signal and the corresponding data. Therefore, the power ratio A can be indicated by the number of resource elements carrying the data. That is, the power ratio A is determined based on the number of resource elements carrying the data.

[0085] In some embodiments, resource elements can be frequency domain units and / or time domain units. The number of resource elements carrying data can be the number of frequency domain units carrying data. The number of resource elements carrying data can be the number of time domain units carrying data. The number of resource elements carrying data can be the sum of the number of time domain units carrying data and the number of frequency domain units carrying data.

[0086] In some embodiments, the number of resource elements carrying data and the first signal (i.e., the number of resource elements carrying the demodulation reference signal and the corresponding data) can be the sum of the number of resource elements carrying data alone, the number of resource elements carrying the first signal alone, and the number of resource elements carrying both the data and the first signal simultaneously.

[0087] In some embodiments, the number of time-domain units carrying data can be determined based on the location of the time-domain units carrying the data. The number of time-domain units carrying data can be determined based on the relative time-domain distance between the location of the time-domain unit carrying the demodulation reference signal and the location of the time-domain unit carrying the corresponding data. The number of time-domain units carrying data can be determined based on the number of OFDM symbols included in the time slot of the data carrying data. The number of time-domain units carrying data can be determined based on the number of OFDM symbols included in the physical data channel carrying the data.

[0088] In some embodiments, the number of frequency domain units carrying data can be determined based on the location of the frequency domain units carrying the data. The number of frequency domain units carrying data can be determined based on the relative time-domain distance between the location of the frequency domain unit carrying the demodulation reference signal and the location of the frequency domain unit carrying the corresponding data. The number of frequency domain units carrying data can be determined based on the number of subcarriers included in the frequency band of the data carrying data. The number of frequency domain units carrying data can be determined based on the number of subcarriers included in the physical data channel carrying the data.

[0089] In some embodiments, when the second parameter and the third parameter are positively correlated, the first parameter and the second parameter are negatively correlated. The third parameter is used to characterize the number of resource elements carrying the first signal. Alternatively, when the second parameter and the third parameter are not correlated, the first parameter and the second parameter are positively correlated.

[0090] In other words, if the number of resource elements carrying the demodulation reference signal is positively correlated with the number of resource elements carrying the data, then the number of resource elements carrying the data reflects the number of resource elements carrying the demodulation reference signal. The more resource elements carrying the demodulation reference signal, the more units of the demodulation reference signal participating in data demodulation exist on the resource elements, resulting in better channel estimation or better data demodulation. Without compromising performance, a smaller power ratio A is required. Therefore, the power ratio A is determined based on the number of resource elements carrying the data, allowing for matching the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0091] If the number of resource elements carrying the demodulation reference signal is independent of the number of resource elements carrying the data, and the number of resource elements carrying the demodulation reference signal remains constant, then the more resource elements carrying the data, the wider the distribution of the corresponding data across the resource elements, and thus the wider the required channel estimation range of the demodulation reference signal. The closer the resource element carrying the demodulation reference signal is to the resource element carrying the corresponding data, the smaller the channel estimation range of the demodulation reference signal. Conversely, the farther the resource element carrying the demodulation reference signal is from the resource element carrying the corresponding data, the wider the channel estimation range of the demodulation reference signal. Therefore, the channel estimation range of the demodulation reference signal is related to the power ratio A; a larger power ratio A corresponds to a wider channel estimation range, and a smaller power ratio A corresponds to a smaller channel estimation range. Therefore, the power ratio A, determined based on the number of resource elements carrying the data, can match the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0092] It should be noted that different data transmission methods selected by the first communication node will result in different relationships between the second and third parameters.

[0093] For example, when the number of time-domain units carrying the demodulation reference signal is positively correlated with the number of OFDM symbols included in the time slot carrying the data, the following cases can be considered when determining the power ratio A based on the number of OFDM symbols included in the time slot carrying the data:

[0094] (1) For example, the number of OFDM symbols included in the time slot carrying data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1. Wherein, P1 is greater than P2.

[0095] (2) For example, the number of OFDM symbols included in the time slot carrying data is N. Corresponding to N being less than or equal to N1, the power ratio A is P1. Corresponding to N being greater than N1 and less than or equal to N2, the power ratio A is P2. Wherein, N1 is less than N2, and P1 is greater than P2.

[0096] (3) For example, the number of OFDM symbols included in the time slot carrying data is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is greater than P3.

[0097] (4) For example, the number of OFDM symbols included in the time slot carrying data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Where N1 is less than N2, N2 is less than N3, P1 is greater than P2, and P2 is greater than P3.

[0098] (5) For example, the number of OFDM symbols included in the time slot carrying data is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3, the power ratio A is P2. Where P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined based on the difference between the number of OFDM symbols N and N3 included in the time slot carrying data.

[0099] (6) For example, the number of OFDM symbols included in the time slot carrying data is N. Corresponding to N greater than or equal to N3, the power ratio A is P3. Corresponding to N less than N3 but greater than or equal to N2, the power ratio A is P2. Wherein, P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined based on the difference between the number of OFDM symbols N and N3 included in the time slot carrying data. Corresponding to N less than N2, the power ratio A is P1. Wherein, P1 = P3 + a(N3 - N2), that is, the value of the power ratio A is the same as the power ratio corresponding to the number of OFDM symbols N2 included in the time slot carrying data.

[0100] (7) For example, the number of OFDM symbols included in the time slot carrying data is N. Corresponding to N equal to N3, the power ratio A is P3. Corresponding to N less than N3 and greater than or equal to N2, the power ratio A is P2. Wherein, P2 = P3 + a(N3 - N), that is, the value of power ratio A is determined based on the difference between the number of OFDM symbols N and N3 included in the time slot carrying data. Corresponding to N less than N2, the power ratio A is P1. Wherein, P1 = P3 + a(N3 - N2), that is, the value of power ratio A is the same as the power ratio corresponding to the number of OFDM symbols N2 included in the time slot carrying data. Corresponding to N greater than N3 and less than or equal to N4, the power ratio A is P4. Wherein, P4 = P3 - b(N - N3), that is, the value of power ratio A is determined based on the difference between the number of OFDM symbols N and N3 included in the time slot carrying data. Corresponding to N greater than N4, the power ratio A is P5. Where P5 = P4 = P3 - b(N4 - N3), that is, the power ratio A is the same as the power ratio corresponding to the number of OFDM symbols included in the time slot carrying data being N4. Here, a and b represent the step size of the power ratio change as the number of OFDM symbols changes.

[0101] Where N1, N2, N3, N4, P1, P2, P3, P4, P5, a, and b are real numbers.

[0102] In these cases, the more time-domain units carrying the demodulation reference signal, the more time-domain units the demodulation reference signal participates in data demodulation, resulting in better channel estimation or data demodulation performance. Without compromising performance, a smaller power ratio A is required. Therefore, the power ratio A is determined based on the number of OFDM symbols included in the data-carrying time slot, and can match the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0103] For example, when the number of time-domain units carrying the demodulation reference signal is unrelated to the number of OFDM symbols included in the time slot carrying the data, the following cases can be considered when determining the power ratio A based on the number of OFDM symbols included in the time slot carrying the data:

[0104] (8) For example, the number of OFDM symbols included in the time slot carrying data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1. Where P1 is less than P2.

[0105] (9) For example, the number of OFDM symbols included in the time slot carrying data is N. Corresponding to N being less than or equal to N1, the power ratio A is P1. Corresponding to N being greater than N1 and less than or equal to N2, the power ratio A is P2. Wherein, N1 is less than N2, and P1 is less than P2.

[0106] (10) For example, the number of OFDM symbols included in the time slot carrying data is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is less than P3.

[0107] (11) For example, the number of OFDM symbols included in the time slot carrying data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Where N1 is less than N2, N2 is less than N3, P1 is less than P2, and P2 is less than P3.

[0108] Where N1, N2, N3, P1, P2, and P3 are real numbers.

[0109] In these scenarios, the more OFDM symbols included in the data-carrying time slot, the wider the corresponding data distribution in the time domain, and the broader the required channel estimation range of the demodulation reference signal. The closer the time-domain unit carrying the demodulation reference signal is to the time-domain unit carrying the corresponding data, the smaller the channel estimation range of the demodulation reference signal. Conversely, the farther the time-domain unit carrying the demodulation reference signal is from the time-domain unit carrying the corresponding data, the wider the channel estimation range of the demodulation reference signal. The channel estimation range of the demodulation reference signal is related to the power ratio A; a larger power ratio A corresponds to a wider channel estimation range, and a smaller power ratio A corresponds to a smaller channel estimation range. Therefore, the power ratio A, determined based on the number of OFDM symbols included in the data-carrying time slot, can match the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0110] In some embodiments, before the second communication node receives data, the second communication node may report one or any combination of the following parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5, a, b.

[0111] It should be noted that the second communication node is the data receiver and knows the values ​​of these parameters from the perspective of data demodulation. The first communication node can receive the parameters reported by the second communication node and determine the power ratio A between the demodulation reference signal and the corresponding data based on these parameters, so as to transmit the demodulation reference signal and the corresponding data. Thus, the second communication node is able to demodulate the received corresponding data based on the received demodulation reference signal.

[0112] In some embodiments, before receiving data, the second communication node may report one or any combination of the following parameters to the first communication node: a, b. It also receives a second signal transmitted by the first communication node and determines one or a combination of the following parameters based on measurements of the second signal: N1, N2, N3, N4, P1, P2, P3, P4, P5. Finally, it reports one or a combination of the determined parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5. For example, the second signal can be a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a channel quality indicator (CQI), a channel quality indicator (PMI), a channel state information reporting band, a non-zero power CSI-RS-resource information element (NZP-CSI-RS-Resource IE), or a CSI-RS-resource mapping information element (CSI-RS-resource mapping IE), etc., used for channel quality measurement.

[0113] It should be noted that a and b represent the step size of the power ratio change as the number of OFDM symbols changes. They are determined by the receiver at the receiving end and do not change with time or scenario. Therefore, they can be reported to the first communication node as capability parameters to avoid frequent reporting.

[0114] The parameters N1, N2, N3, N4, P1, P2, P3, P4, and P5 are related to the scenario in which data transmission occurs. To ensure the accuracy of the power ratio A, these parameters need to change as the data transmission scenario changes. Therefore, the second communication node needs to determine these parameters based on measurements of the second signal and report the measurement results to the first communication node. This accurately determines the values ​​of the parameters related to the power ratio A, enabling the matching of the demodulated reference signal power with the corresponding data power according to the data transmission scenario, thereby improving data transmission efficiency.

[0115] In some embodiments, one or any combination of the following parameters may be determined by the first communication node or protocol: N1, N2, N3, N4. One or any combination of the following parameters may be reported by the second communication node to the third communication node: P1, P2, P3, P4, P5.

[0116] It should be noted that N1, N2, N3, and N4 correspond to the threshold values ​​compared to the number N of OFDM symbols included in the time slot carrying data. These values ​​are determined by the protocol or by the first communication node, which can reduce the diversity of parameter values ​​caused by different second communication nodes determining the parameter values. This reduces the complexity of the second communication node and thus reduces the complexity of the system.

[0117] For example, when the number of time-domain units carrying the demodulation reference signal is positively correlated with the number of time-domain units carrying the corresponding data, the power ratio A can be determined based on the number of time-domain units carrying the corresponding data in the following ways:

[0118] (1) For example, the number of time-domain units carrying the corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1. Where P1 is greater than P2.

[0119] (2) For example, the number of time-domain units carrying the corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. Where N1 is less than N2 and P1 is greater than P2.

[0120] (3) For example, the number of time-domain units carrying the corresponding data is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is greater than P3.

[0121] (4) For example, the number of time-domain units carrying the corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Where N1 is less than N2, N2 is less than N3, P1 is greater than P2, and P2 is greater than P3.

[0122] (5) For example, the number of time-domain units carrying the corresponding data is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3, the power ratio A is P2. Wherein, P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined based on the difference between the number of time-domain units carrying the corresponding data, N and N3.

[0123] (6) For example, the number of time-domain units carrying the corresponding data is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3 but greater than or equal to N2, the power ratio A is P2. Where P2 = P3 + a(N3 - N), that is, the power ratio A is determined based on the difference between the number of time-domain units carrying the corresponding data, N and N3. When N is less than N2, the power ratio A is P1. Where P1 = P3 + a(N3 - N2), that is, the power ratio A is the same as the power ratio corresponding to the number of time-domain units carrying the corresponding data, N2.

[0124] (7) For example, the number of time-domain units carrying the corresponding data is N. When N equals N3, the power ratio A is P3. When N is less than N3 but greater than or equal to N2, the power ratio A is P2. Where P2 = P3 + a(N3 - N), meaning the power ratio A is determined based on the difference between the number of time-domain units carrying the corresponding data (N) and N3. When N is less than N2, the power ratio A is P1. Where P1 = P3 + a(N3 - N2), meaning the power ratio A is the same as the power ratio corresponding to the number of time-domain units carrying the corresponding data (N2). When N is greater than N3 but less than or equal to N4, the power ratio A is P4. Where P4 = P3 - b(N - N3), meaning the power ratio A is determined based on the difference between the number of time-domain units carrying the corresponding data (N) and N3. When N is greater than N4, the power ratio A is P5. Where P5 = P4 = P3 - b(N4 - N3), that is, the power ratio A is the same as the power ratio corresponding to the number of time-domain units carrying the corresponding data being N4. Here, a and b represent the step size of the power ratio change as the number of OFDM symbols changes.

[0125] Where N1, N2, N3, N4, P1, P2, P3, P4, P5, a, and b are real numbers.

[0126] In these cases, the more time-domain units carrying the demodulation reference signal, the more time-domain units the demodulation reference signal has participating in data demodulation, resulting in better channel estimation or data demodulation performance. Without compromising performance, a smaller power ratio A is required. Therefore, the power ratio A is determined based on the number of time-domain units carrying the corresponding data, allowing for matching the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0127] For example, when the number of time-domain units carrying the demodulation reference signal is unrelated to the number of time-domain units carrying the corresponding data, the following cases can be considered when determining the power ratio A based on the number of OFDM symbols included in the time slot carrying the data:

[0128] (8) For example, the number of time-domain units carrying the corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1. Where P1 is less than P2.

[0129] (9) For example, the number of time-domain units carrying the corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. Where N1 is less than N2 and P1 is less than P2.

[0130] (10) For example, the number of time-domain units carrying the corresponding data is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is less than P3.

[0131] (11) For example, the number of time-domain units carrying the corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Where N1 is less than N2, N2 is less than N3, P1 is less than P2, and P2 is less than P3.

[0132] Where N1, N2, N3, P1, P2, and P3 are real numbers.

[0133] In these scenarios, the more time-domain units carrying the corresponding data, and the wider the time-domain distribution of the corresponding data, the broader the required range of channel estimation for the demodulation reference signal. The closer the time-domain unit carrying the demodulation reference signal is to the time-domain unit carrying the corresponding data, the smaller the range of channel estimation for the demodulation reference signal. Conversely, the farther the time-domain unit carrying the demodulation reference signal is from the time-domain unit carrying the corresponding data, the wider the range of channel estimation for the demodulation reference signal. The range of channel estimation for the demodulation reference signal is related to the power ratio A; a larger power ratio A corresponds to a wider range of channel estimation, and a smaller power ratio A corresponds to a smaller range of channel estimation. Therefore, the power ratio A, determined based on the number of time-domain units carrying the corresponding data, can match the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0134] In some embodiments, before the second communication node receives data, the second communication node may report one or any combination of the following parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5, a, b.

[0135] It should be noted that the second communication node is the data receiver and knows the values ​​of these parameters from the perspective of data demodulation. The first communication node can receive the parameters reported by the second communication node and determine the power ratio A between the demodulation reference signal and the corresponding data based on these parameters, so as to transmit the demodulation reference signal and the corresponding data. Thus, the second communication node is able to demodulate the received corresponding data based on the received demodulation reference signal.

[0136] In some embodiments, before receiving data, the second communication node may report one or any combination of the following parameters to the first communication node: a, b. It also receives a second signal transmitted by the first communication node and determines one or a combination of the following parameters based on measurements of the second signal: N1, N2, N3, N4, P1, P2, P3, P4, P5. Finally, it reports one or a combination of the determined parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5.

[0137] It should be noted that a and b represent the step size of the power ratio change as the number of time-domain units of the data changes. They are determined by the receiver at the receiving end and do not change with time or scenario. Therefore, they can be reported to the first communication node as capability parameters to avoid frequent reporting.

[0138] The parameters N1, N2, N3, N4, P1, P2, P3, P4, and P5 are related to the scenario in which data transmission occurs. To ensure the accuracy of the power ratio A, these parameters need to change as the data transmission scenario changes. Therefore, the second communication node needs to determine these parameters based on measurements of the second signal and report the measurement results to the first communication node. This accurately determines the values ​​of the parameters related to the power ratio A, enabling the matching of the demodulated reference signal power with the corresponding data power according to the data transmission scenario, thereby improving data transmission efficiency.

[0139] In some embodiments, one or any combination of the following parameters may be determined by the first communication node or protocol: N1, N2, N3, N4. One or any combination of the following parameters may be reported by the second communication node to the third communication node: P1, P2, P3, P4, P5.

[0140] It should be noted that N1, N2, N3, and N4 correspond to the threshold values ​​compared to the number N of time-domain units carrying the corresponding data. These values ​​are determined by the protocol or by the first communication node, which can reduce the diversity of parameter values ​​caused by different second communication nodes determining the parameter values. This reduces the complexity of the second communication node and thus reduces the complexity of the system.

[0141] For example, when the number of time-domain units carrying the demodulation reference signal is positively correlated with the number of resource elements carrying the demodulation reference signal and corresponding data, the following cases can be considered when determining the power ratio A based on the number of resource elements carrying the demodulation reference signal and corresponding data:

[0142] (1) For example, the number of resource elements carrying the demodulation reference signal and corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1. Wherein, P1 is greater than P2.

[0143] (2) For example, the number of resource elements carrying the demodulation reference signal and corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. Where N1 is less than N2 and P1 is greater than P2.

[0144] (3) For example, the number of resource elements carrying the demodulation reference signal and corresponding data is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is greater than P3.

[0145] (4) For example, the number of resource elements carrying the demodulation reference signal and corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Where N1 is less than N2, N2 is less than N3, P1 is greater than P2, and P2 is greater than P3.

[0146] (5) For example, the number of resource elements carrying the demodulation reference signal and corresponding data is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3, the power ratio A is P2. Where P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined based on the difference between the number of resource elements carrying the demodulation reference signal and corresponding data, N and N3.

[0147] (6) For example, the number of resource elements carrying the demodulation reference signal and corresponding data is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3 but greater than or equal to N2, the power ratio A is P2. Where P2 = P3 + a(N3 - N), that is, the power ratio A is determined based on the difference between the number of resource elements carrying the demodulation reference signal and corresponding data (N and N3). When N is less than N2, the power ratio A is P1. Where P1 = P3 + a(N3 - N2), that is, the power ratio A is the same as the power ratio corresponding to the number of resource elements carrying the demodulation reference signal and corresponding data (N2).

[0148] (7) For example, the number of resource elements carrying the demodulation reference signal and corresponding data is N. When N equals N3, the power ratio A is P3. When N is less than N3 but greater than or equal to N2, the power ratio A is P2. Where P2 = P3 + a(N3 - N), meaning the power ratio A is determined based on the difference between the number of resource elements carrying the demodulation reference signal and corresponding data (N and N3). When N is less than N2, the power ratio A is P1. Where P1 = P3 + a(N3 - N2), meaning the power ratio A is the same as the power ratio corresponding to the number of resource elements carrying the demodulation reference signal and corresponding data (N2). When N is greater than N3 but less than or equal to N4, the power ratio A is P4. Where P4 = P3 - b(N - N3), meaning the power ratio A is determined based on the difference between the number of resource elements carrying the demodulation reference signal and corresponding data (N and N3). When N is greater than N4, the power ratio A is P5. Where P5 = P4 = P3 - b(N4 - N3), that is, the power ratio A is the same as the power ratio corresponding to the number of resource elements carrying the demodulation reference signal and the corresponding data is N4. Here, a and b represent the step size of the power ratio change as the number of OFDM symbols changes.

[0149] Where N1, N2, N3, N4, P1, P2, P3, P4, P5, a, and b are real numbers.

[0150] In these cases, the more time-domain units carrying the demodulation reference signal, and the more time-domain units of the demodulation reference signal participating in data demodulation, the better the channel estimation or data demodulation effect. Without compromising performance, the required power ratio A is smaller. Therefore, the power ratio A is determined based on the number of resource elements carrying the demodulation reference signal and corresponding data, allowing for the matching of the demodulation reference signal power with the data power, thereby improving data transmission efficiency.

[0151] For example, when the number of time-domain units carrying the demodulation reference signal is unrelated to the number of resource elements carrying the demodulation reference signal and the corresponding data, the following cases can be considered when determining the power ratio A based on the number of OFDM symbols included in the time slot carrying the data:

[0152] (8) For example, the number of resource elements carrying the demodulation reference signal and corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1. Where P1 is less than P2.

[0153] (9) For example, the number of resource elements carrying the demodulation reference signal and corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. Where N1 is less than N2 and P1 is less than P2.

[0154] (10) For example, the number of resource elements carrying the demodulation reference signal and corresponding data is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is less than P3.

[0155] (11) For example, the number of resource elements carrying the demodulation reference signal and corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Wherein, N1 is less than N2, N2 is less than N3, P1 is less than P2, and P2 is less than P3.

[0156] Where N1, N2, N3, P1, P2, and P3 are real numbers.

[0157] In these scenarios, the more resource elements carrying the demodulation reference signal and corresponding data, and the wider the time-domain distribution of the corresponding data, the broader the required channel estimation range of the demodulation reference signal. The closer the time-domain unit carrying the demodulation reference signal is to the time-domain unit carrying the corresponding data, the smaller the channel estimation range of the demodulation reference signal. Conversely, the farther the time-domain unit carrying the demodulation reference signal is from the time-domain unit carrying the corresponding data, the broader the channel estimation range of the demodulation reference signal. The channel estimation range of the demodulation reference signal is related to the power ratio A; a larger power ratio A corresponds to a broader channel estimation range, and a smaller power ratio A corresponds to a smaller channel estimation range. Therefore, the power ratio A is determined based on the number of resource elements carrying the demodulation reference signal and corresponding data, which can match the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0158] In some embodiments, before the second communication node receives data, the second communication node may report one or any combination of the following parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5, a, b.

[0159] It should be noted that the second communication node is the data receiver and knows the values ​​of these parameters from the perspective of data demodulation. The first communication node can receive the parameters reported by the second communication node and determine the power ratio A between the demodulation reference signal and the corresponding data based on these parameters, so as to transmit the demodulation reference signal and the corresponding data. Thus, the second communication node is able to demodulate the received corresponding data based on the received demodulation reference signal.

[0160] In some embodiments, before receiving data, the second communication node may report one or any combination of the following parameters to the first communication node: a, b. It also receives a second signal transmitted by the first communication node and determines one or a combination of the following parameters based on measurements of the second signal: N1, N2, N3, N4, P1, P2, P3, P4, P5. Finally, it reports one or a combination of the determined parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5.

[0161] It should be noted that a and b represent the step size of the power ratio change as the number of resource elements of the demodulated reference signal and corresponding data changes. They are determined by the receiver at the receiving end and do not change with time or scenario. Therefore, they can be reported to the first communication node as capability parameters to avoid frequent reporting.

[0162] The parameters N1, N2, N3, N4, P1, P2, P3, P4, and P5 are related to the scenario in which data transmission occurs. To ensure the accuracy of the power ratio A, these parameters need to change as the data transmission scenario changes. Therefore, the second communication node needs to determine these parameters based on measurements of the second signal and report the measurement results to the first communication node. This accurately determines the values ​​of the parameters related to the power ratio A, enabling the matching of the demodulated reference signal power with the corresponding data power according to the data transmission scenario, thereby improving data transmission efficiency.

[0163] In some embodiments, one or any combination of the following parameters may be determined by the first communication node or protocol: N1, N2, N3, N4. One or any combination of the following parameters may be reported by the second communication node to the third communication node: P1, P2, P3, P4, P5.

[0164] It should be noted that N1, N2, N3, and N4 correspond to the threshold values ​​for comparing the number N of resource elements carrying the demodulation reference signal and the corresponding data. These values ​​are determined by the protocol or by the first communication node, which can reduce the diversity of parameter values ​​caused by different second communication nodes determining the parameter values. This reduces the complexity of the second communication node and thus reduces the complexity of the system.

[0165] For example, when the number of time-domain units carrying the demodulation reference signal is positively correlated with the number of subcarriers included in the frequency band carrying the data, the following cases can be considered when determining the power ratio A based on the number of subcarriers included in the frequency band carrying the data:

[0166] (1) For example, the number of subcarriers included in the frequency band carrying data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1. Where P1 is greater than P2.

[0167] (2) For example, the number of subcarriers included in the frequency band carrying data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. Where N1 is less than N2 and P1 is greater than P2.

[0168] (3) For example, the number of subcarriers included in the frequency band carrying data is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is greater than P3.

[0169] (4) For example, the number of subcarriers included in the frequency band carrying data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Where N1 is less than N2, N2 is less than N3, P1 is greater than P2, and P2 is greater than P3.

[0170] (5) For example, the number of subcarriers included in the frequency band carrying data is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3, the power ratio A is P2. Wherein, P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined based on the difference between the number of subcarriers N and N3 included in the frequency band carrying data.

[0171] (6) For example, the number of subcarriers included in the frequency band carrying data is N. Corresponding to N greater than or equal to N3, the power ratio A is P3. Corresponding to N less than N3 but greater than or equal to N2, the power ratio A is P2. Wherein, P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined based on the difference between the number of subcarriers N and N3 included in the frequency band carrying data. Corresponding to N less than N2, the power ratio A is P1. Wherein, P1 = P3 + a(N3 - N2), that is, the value of the power ratio A is the same as the power ratio corresponding to the number of subcarriers N2 included in the frequency band carrying data.

[0172] (7) For example, the number of subcarriers included in the frequency band carrying data is N. Corresponding to N equal to N3, the power ratio A is P3. Corresponding to N less than N3 and greater than or equal to N2, the power ratio A is P2. Wherein, P2 = P3 + a(N3 - N), that is, the value of power ratio A is determined based on the difference between the number of subcarriers N and N3 included in the frequency band carrying data. Corresponding to N less than N2, the power ratio A is P1. Wherein, P1 = P3 + a(N3 - N2), that is, the value of power ratio A is the same as the power ratio corresponding to the number of subcarriers N2 included in the frequency band carrying data. Corresponding to N greater than N3 and less than or equal to N4, the power ratio A is P4. Wherein, P4 = P3 - b(N - N3), that is, the value of power ratio A is determined based on the difference between the number of subcarriers N and N3 included in the frequency band carrying data. Corresponding to N greater than N4, the power ratio A is P5. Where P5 = P4 = P3 - b(N4 - N3), meaning the power ratio A is the same as the power ratio corresponding to the number of subcarriers N4 included in the data-carrying frequency band. Here, a and b represent the step size of the power ratio change as the number of OFDM symbols changes.

[0173] Where N1, N2, N3, N4, P1, P2, P3, P4, P5, a, and b are real numbers.

[0174] In these cases, the more time-domain units carrying the demodulation reference signal, the more time-domain units the demodulation reference signal participates in data demodulation, resulting in better channel estimation or data demodulation performance. Without compromising performance, a smaller power ratio A is required. Therefore, the power ratio A is determined based on the number of subcarriers included in the data-carrying frequency band, and can match the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0175] For example, when the number of time-domain units carrying the demodulation reference signal is unrelated to the number of subcarriers included in the frequency band carrying the data, the following cases can be considered when determining the power ratio A based on the number of OFDM symbols included in the time slot of the data:

[0176] (8) For example, the number of subcarriers included in the frequency band carrying data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1. Where P1 is less than P2.

[0177] (9) For example, the number of subcarriers included in the frequency band carrying data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. Where N1 is less than N2 and P1 is less than P2.

[0178] (10) For example, the number of subcarriers included in the frequency band carrying data is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is less than P3.

[0179] (11) For example, the number of subcarriers included in the frequency band carrying data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Where N1 is less than N2, N2 is less than N3, P1 is less than P2, and P2 is less than P3.

[0180] Where N1, N2, N3, P1, P2, and P3 are real numbers.

[0181] In these scenarios, the more subcarriers included in the data-carrying frequency band, the wider the time-domain distribution of the corresponding data, and the broader the required channel estimation range of the demodulation reference signal. The closer the time-domain unit carrying the demodulation reference signal is to the time-domain unit carrying the corresponding data, the smaller the channel estimation range of the demodulation reference signal. Conversely, the farther the time-domain unit carrying the demodulation reference signal is from the time-domain unit carrying the corresponding data, the wider the channel estimation range of the demodulation reference signal. The channel estimation range of the demodulation reference signal is related to the power ratio A; a larger power ratio A corresponds to a wider channel estimation range, and a smaller power ratio A corresponds to a smaller channel estimation range. Therefore, the power ratio A, determined based on the number of subcarriers included in the data-carrying frequency band, can match the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0182] In some embodiments, before the second communication node receives data, the second communication node may report one or any combination of the following parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5, a, b.

[0183] It should be noted that the second communication node is the data receiver and knows the values ​​of these parameters from the perspective of data demodulation. The first communication node can receive the parameters reported by the second communication node and determine the power ratio A between the demodulation reference signal and the corresponding data based on these parameters, so as to transmit the demodulation reference signal and the corresponding data. Thus, the second communication node is able to demodulate the received corresponding data based on the received demodulation reference signal.

[0184] In some embodiments, before receiving data, the second communication node may report one or any combination of the following parameters to the first communication node: a, b. It also receives a second signal transmitted by the first communication node and determines one or a combination of the following parameters based on measurements of the second signal: N1, N2, N3, N4, P1, P2, P3, P4, P5. Finally, it reports one or a combination of the determined parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5.

[0185] It should be noted that a and b represent the step size of the power ratio change as the number of subcarriers included in the data frequency band changes. They are determined by the receiver at the receiving end and do not change with time or scenario. Therefore, they can be reported to the first communication node as capability parameters to avoid frequent reporting.

[0186] The parameters N1, N2, N3, N4, P1, P2, P3, P4, and P5 are related to the scenario in which data transmission occurs. To ensure the accuracy of the power ratio A, these parameters need to change as the data transmission scenario changes. Therefore, the second communication node needs to determine these parameters based on measurements of the second signal and report the measurement results to the first communication node. This accurately determines the values ​​of the parameters related to the power ratio A, enabling the matching of the demodulated reference signal power with the corresponding data power according to the data transmission scenario, thereby improving data transmission efficiency.

[0187] In some embodiments, one or any combination of the following parameters may be determined by the first communication node or protocol: N1, N2, N3, N4. One or any combination of the following parameters may be reported by the second communication node to the third communication node: P1, P2, P3, P4, P5.

[0188] It should be noted that N1, N2, N3, and N4 correspond to the threshold values ​​for comparison with the number N of subcarriers included in the data-carrying frequency band. These values ​​are determined by the protocol or by the first communication node, which can reduce the diversity of parameter values ​​caused by different second communication nodes determining the parameter values. This reduces the complexity of the second communication node and thus reduces the complexity of the system.

[0189] For example, when the number of time-domain units carrying the demodulation reference signal is positively correlated with the number of frequency-domain units carrying the corresponding data, the following cases can be considered when determining the power ratio A based on the number of frequency-domain units carrying the corresponding data:

[0190] (1) For example, the number of frequency domain units carrying the corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1. Where P1 is greater than P2.

[0191] (2) For example, the number of frequency domain units carrying the corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. Where N1 is less than N2 and P1 is greater than P2.

[0192] (3) For example, the number of frequency domain units carrying the corresponding data is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is greater than P3.

[0193] (4) For example, the number of frequency domain units carrying the corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Where N1 is less than N2, N2 is less than N3, P1 is greater than P2, and P2 is greater than P3.

[0194] (5) For example, the number of frequency domain units carrying the corresponding data is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3, the power ratio A is P2. Wherein, P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined based on the difference between the number of frequency domain units carrying the corresponding data, N and N3.

[0195] (6) For example, the number of frequency domain units carrying the corresponding data is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3 but greater than or equal to N2, the power ratio A is P2. Where P2 = P3 + a(N3 - N), that is, the power ratio A is determined based on the difference between the number of frequency domain units carrying the corresponding data, N and N3. When N is less than N2, the power ratio A is P1. Where P1 = P3 + a(N3 - N2), that is, the power ratio A is the same as the power ratio corresponding to the number of frequency domain units carrying the corresponding data, N2.

[0196] (7) For example, the number of frequency domain units carrying the corresponding data is N. When N equals N3, the power ratio A is P3. When N is less than N3 but greater than or equal to N2, the power ratio A is P2. Where P2 = P3 + a(N3 - N), meaning the power ratio A is determined based on the difference between the number of frequency domain units carrying the corresponding data (N) and N3. When N is less than N2, the power ratio A is P1. Where P1 = P3 + a(N3 - N2), meaning the power ratio A is the same as the power ratio corresponding to the number of frequency domain units carrying the corresponding data (N2). When N is greater than N3 but less than or equal to N4, the power ratio A is P4. Where P4 = P3 - b(N - N3), meaning the power ratio A is determined based on the difference between the number of frequency domain units carrying the corresponding data (N) and N3. When N is greater than N4, the power ratio A is P5. Where P5 = P4 = P3 - b(N4 - N3), the power ratio A is the same as the power ratio corresponding to the number of frequency domain units carrying the corresponding data being N4. Here, a and b represent the step size of the power ratio change as the number of OFDM symbols changes.

[0197] Where N1, N2, N3, N4, P1, P2, P3, P4, P5, a, and b are real numbers.

[0198] In these cases, the more time-domain units carrying the demodulation reference signal, the more time-domain units the demodulation reference signal has participating in data demodulation, resulting in better channel estimation or data demodulation performance. Without compromising performance, a smaller power ratio A is required. Therefore, the power ratio A is determined based on the number of frequency-domain units carrying the corresponding data, allowing for matching the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0199] For example, when the number of time-domain units carrying the demodulation reference signal is unrelated to the number of frequency-domain units carrying the corresponding data, the following cases can be considered when determining the power ratio A based on the number of OFDM symbols included in the time slot carrying the data:

[0200] (8) For example, the number of frequency domain units carrying the corresponding data is N. When N is less than or equal to N1, the power ratio A is P1. When N is greater than N1, the power ratio A is P2. Where P1 is less than P2.

[0201] (9) For example, the number of frequency domain units carrying the corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. Where N1 is less than N2 and P1 is less than P2.

[0202] (10) For example, the number of frequency domain units carrying the corresponding data is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is less than P3.

[0203] (11) For example, the number of frequency domain units carrying the corresponding data is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Where N1 is less than N2, N2 is less than N3, P1 is less than P2, and P2 is less than P3.

[0204] Where N1, N2, N3, P1, P2, and P3 are real numbers.

[0205] In these scenarios, the more frequency domain units carrying the corresponding data, and the wider the time-domain distribution of the corresponding data, the broader the required channel estimation range of the demodulation reference signal. The closer the time domain unit carrying the demodulation reference signal is to the time domain unit carrying the corresponding data, the smaller the channel estimation range of the demodulation reference signal. Conversely, the farther the time domain unit carrying the demodulation reference signal is from the time domain unit carrying the corresponding data, the wider the channel estimation range of the demodulation reference signal. The channel estimation range of the demodulation reference signal is related to the power ratio A; a larger power ratio A corresponds to a wider channel estimation range, and a smaller power ratio A corresponds to a smaller channel estimation range. Therefore, the power ratio A, determined based on the number of frequency domain units carrying the corresponding data, can match the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0206] In some embodiments, before the second communication node receives data, the second communication node may report one or any combination of the following parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5, a, b.

[0207] It should be noted that the second communication node is the data receiver and knows the values ​​of these parameters from the perspective of data demodulation. The first communication node can receive the parameters reported by the second communication node and determine the power ratio A between the demodulation reference signal and the corresponding data based on these parameters, so as to transmit the demodulation reference signal and the corresponding data. Thus, the second communication node is able to demodulate the received corresponding data based on the received demodulation reference signal.

[0208] In some embodiments, before receiving data, the second communication node may report one or any combination of the following parameters to the first communication node: a, b. It also receives a second signal transmitted by the first communication node and determines one or a combination of the following parameters based on measurements of the second signal: N1, N2, N3, N4, P1, P2, P3, P4, P5. Finally, it reports one or a combination of the determined parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5.

[0209] It should be noted that a and b represent the step size of the power ratio change as the number of frequency domain units of the data changes. They are determined by the receiver at the receiving end and do not change with time or scenario. Therefore, they can be reported to the first communication node as capability parameters to avoid frequent reporting.

[0210] The parameters N1, N2, N3, N4, P1, P2, P3, P4, and P5 are related to the scenario in which data transmission occurs. To ensure the accuracy of the power ratio A, these parameters need to change as the data transmission scenario changes. Therefore, the second communication node needs to determine these parameters based on measurements of the second signal and report the measurement results to the first communication node. This accurately determines the values ​​of the parameters related to the power ratio A, enabling the matching of the demodulated reference signal power with the corresponding data power according to the data transmission scenario, thereby improving data transmission efficiency.

[0211] In some embodiments, one or any combination of the following parameters may be determined by the first communication node or protocol: N1, N2, N3, N4. One or any combination of the following parameters may be reported by the second communication node to the third communication node: P1, P2, P3, P4, P5.

[0212] It should be noted that N1, N2, N3, and N4 correspond to the threshold values ​​compared to the number N of frequency domain units carrying the corresponding data. These values ​​are determined by the protocol or by the first communication node, which reduces the diversity of parameter values ​​caused by different second communication nodes determining the parameter values. This reduces the complexity of the second communication node and thus the complexity of the system.

[0213] In some embodiments, the first parameter is determined based on the third parameter. The third parameter is used to characterize the number of resource elements carrying the first signal or the codeword length of the code field unit carrying the first signal.

[0214] In other words, as described in the above embodiments, the resource element can be either a frequency domain unit or a time domain unit. When the resource element can be either a frequency domain unit or a time domain unit, the more resource elements carrying the demodulation reference signal, the more units of the demodulation reference signal participating in data demodulation on the resource elements, the better the channel estimation effect or the better the data demodulation effect. Without reducing the effect, the required power ratio A is smaller.

[0215] Therefore, the power ratio A can be indicated by the number of units of the demodulation reference signal carried on the resource element. That is, the power ratio A is determined based on the number of units of the demodulation reference signal carried on the resource element.

[0216] In some embodiments, resource elements can also be code domain units (also called code groups). That is, demodulation reference signals located in different code groups are orthogonal in time and frequency. Reference signals located in the same code group are orthogonal in code domain. With a larger number of code groups, the number of ports carrying demodulation reference signals on the same code group can be reduced, thus allowing for a greater allocation of power to the corresponding demodulation reference signals. Therefore, the power ratio A can be indicated by the number of code domain units carrying the demodulation reference signals. In other words, the power ratio A is determined based on the number of code domain units carrying the demodulation reference signals.

[0217] In some embodiments, the power ratio A can be determined based on the codeword length of the code domain unit carrying the demodulation reference signal (also referred to as the codeword length in the code group carrying the demodulation reference signal). That is, the codeword length in the code group carrying the demodulation reference signal is related to the length of the correlation calculation in channel estimation; the longer the codeword, the more power can be accumulated for channel estimation. Therefore, the power ratio A can be indicated by the codeword length in the code group carrying the demodulation reference signal. In other words, the power ratio A is determined based on the codeword length in the code group carrying the demodulation reference signal.

[0218] In some embodiments, the number of time-domain units carrying the demodulation reference signal can be determined based on the location of the time-domain units carrying the data. The number of time-domain units carrying the demodulation reference signal can also be determined based on the relative time-domain distance between the location of the time-domain units carrying the demodulation reference signal and the location of the time-domain units carrying the corresponding data.

[0219] In some embodiments, the number of time-domain units carrying the demodulation reference signal can be determined based on the location of the time-domain units carrying the data. The number of time-domain units carrying the demodulation reference signal can also be determined based on the relative time-domain distance between the location of the time-domain units carrying the demodulation reference signal and the location of the time-domain units carrying the corresponding data.

[0220] In some embodiments, the first parameter is negatively correlated with the third parameter.

[0221] In other words, as can be seen from the above embodiments, the more resource elements carrying demodulation reference signals, the more units of demodulation reference signals participating in data demodulation on resource elements, the better the channel estimation effect or the better the data demodulation effect, and the smaller the required power ratio A is while maintaining the effect.

[0222] For example, when determining the power ratio A based on the number of time-domain units carrying the demodulation reference signal, the following cases are possible:

[0223] (1) For example, the number of time-domain units carrying the demodulation reference signal is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1. Where P1 is greater than P2.

[0224] (2) For example, the number of time-domain units carrying the demodulation reference signal is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. Where N1 is less than N2 and P1 is greater than P2.

[0225] (3) For example, the number of time-domain units carrying the demodulation reference signal is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is greater than P3.

[0226] (4) For example, the number of time-domain units carrying the demodulation reference signal is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Where N1 is less than N2, N2 is less than N3, P1 is greater than P2, and P2 is greater than P3.

[0227] (5) For example, the number of time-domain units carrying the demodulation reference signal is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3, the power ratio A is P2. Where P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined based on the difference between the number of time-domain units carrying the demodulation reference signal, N, and N3.

[0228] (6) For example, the number of time-domain units carrying the demodulation reference signal is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3 but greater than or equal to N2, the power ratio A is P2. Where P2 = P3 + a(N3 - N), that is, the power ratio A is determined based on the difference between the number of time-domain units carrying the demodulation reference signal (N) and N3. When N is less than N2, the power ratio A is P1. Where P1 = P3 + a(N3 - N2), that is, the power ratio A is the same as the power ratio corresponding to the number of time-domain units carrying the demodulation reference signal (N2).

[0229] (7) For example, the number of time-domain units carrying the demodulation reference signal is N. Corresponding to N equal to N3, the power ratio A is P3. Corresponding to N less than N3 but greater than or equal to N2, the power ratio A is P2. Wherein, P2 = P3 + a(N3 - N), that is, the power ratio A is determined based on the difference between the number of time-domain units carrying the demodulation reference signal, N, and N3. Corresponding to N less than N2, the power ratio A is P1. Wherein, P1 = P3 + a(N3 - N2), that is, the power ratio A is the same as the power ratio corresponding to the number of time-domain units carrying the demodulation reference signal, N2. Corresponding to N greater than N3 and less than or equal to N4, the power ratio A is P4. Wherein, P4 = P3 - b(N - N3), that is, the power ratio A is determined based on the difference between the number of time-domain units carrying the demodulation reference signal, N, and N3. Corresponding to N greater than N4, the power ratio A is P5. Where P5 = P4 = P3 - b(N4 - N3), the power ratio A is the same as the power ratio corresponding to the number of time-domain units carrying the demodulation reference signal being N4. Here, a and b represent the step size of the power ratio change as the number of time-domain units changes.

[0230] Where N1, N2, N3, N4, P1, P2, P3, P4, P5, a, and b are real numbers.

[0231] In these cases, the more time-domain units carrying the demodulation reference signal, and the more time-domain units of the demodulation reference signal participating in data demodulation, the better the channel estimation or data demodulation effect. Without compromising performance, a smaller power ratio A is required. Therefore, the power ratio A is determined based on the number of time-domain units carrying the demodulation reference signal, allowing for matching the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0232] In some embodiments, before the second communication node receives data, the second communication node may report one or any combination of the following parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5, a, b.

[0233] It should be noted that the second communication node is the data receiver and knows the values ​​of these parameters from the perspective of data demodulation. The first communication node can receive the parameters reported by the second communication node and determine the power ratio A between the demodulation reference signal and the corresponding data based on these parameters, so as to transmit the demodulation reference signal and the corresponding data. Thus, the second communication node is able to demodulate the received corresponding data based on the received demodulation reference signal.

[0234] In some embodiments, before receiving data, the second communication node may report one or any combination of the following parameters to the first communication node: a, b. It also receives a second signal transmitted by the first communication node and determines one or a combination of the following parameters based on measurements of the second signal: N1, N2, N3, N4, P1, P2, P3, P4, P5. Finally, it reports one or a combination of the determined parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5.

[0235] It should be noted that a and b represent the step size of the power ratio change as the number of time-domain units of the demodulated reference signal changes. These values ​​are determined by the receiver at the receiving end and do not change with time or scenario. Therefore, they can be reported to the first communication node as capability parameters to avoid frequent reporting.

[0236] The parameters N1, N2, N3, N4, P1, P2, P3, P4, and P5 are related to the scenario in which data transmission occurs. To ensure the accuracy of the power ratio A, these parameters need to change as the data transmission scenario changes. Therefore, the second communication node needs to determine these parameters based on measurements of the second signal and report the measurement results to the first communication node. This accurately determines the values ​​of the parameters related to the power ratio A, enabling the matching of the demodulated reference signal power with the corresponding data power according to the data transmission scenario, thereby improving data transmission efficiency.

[0237] In some embodiments, one or any combination of the following parameters may be determined by the first communication node or protocol: N1, N2, N3, N4. One or any combination of the following parameters may be reported by the second communication node to the third communication node: P1, P2, P3, P4, P5.

[0238] It should be noted that N1, N2, N3, and N4 correspond to the threshold values ​​for comparison based on the number N of time-domain units carrying the demodulation reference signal. These values ​​are determined by the protocol or by the first communication node, which reduces the diversity of parameter values ​​caused by different second communication nodes determining the parameter values. This reduces the complexity of the second communication node and thus the complexity of the system.

[0239] For example, when determining the power ratio A based on the number of frequency domain units carrying the demodulation reference signal, the following cases are possible:

[0240] (1) For example, the number of frequency domain units carrying the demodulation reference signal is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1. Where P1 is greater than P2.

[0241] (2) For example, the number of frequency domain units carrying the demodulation reference signal is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. Where N1 is less than N2 and P1 is greater than P2.

[0242] (3) For example, the number of frequency domain units carrying the demodulation reference signal is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is greater than P3.

[0243] (4) For example, the number of frequency domain units carrying the demodulation reference signal is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Where N1 is less than N2, N2 is less than N3, P1 is greater than P2, and P2 is greater than P3.

[0244] (5) For example, the number of frequency domain units carrying the demodulation reference signal is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3, the power ratio A is P2. Where P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined based on the difference between the number of frequency domain units carrying the demodulation reference signal, N, and N3.

[0245] (6) For example, the number of frequency domain units carrying the demodulation reference signal is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3 but greater than or equal to N2, the power ratio A is P2. Where P2 = P3 + a(N3 - N), that is, the power ratio A is determined based on the difference between the number of frequency domain units carrying the demodulation reference signal (N) and N3. When N is less than N2, the power ratio A is P1. Where P1 = P3 + a(N3 - N2), that is, the power ratio A is the same as the power ratio corresponding to the number of frequency domain units carrying the demodulation reference signal (N2).

[0246] (7) For example, the number of frequency domain units carrying the demodulation reference signal is N. Corresponding to N equal to N3, the power ratio A is P3. Corresponding to N less than N3 but greater than or equal to N2, the power ratio A is P2. Wherein, P2 = P3 + a(N3 - N), that is, the power ratio A is determined based on the difference between the number of frequency domain units carrying the demodulation reference signal, N, and N3. Corresponding to N less than N2, the power ratio A is P1. Wherein, P1 = P3 + a(N3 - N2), that is, the power ratio A is the same as the power ratio corresponding to the number of frequency domain units carrying the demodulation reference signal, N2. Corresponding to N greater than N3 and less than or equal to N4, the power ratio A is P4. Wherein, P4 = P3 - b(N - N3), that is, the power ratio A is determined based on the difference between the number of frequency domain units carrying the demodulation reference signal, N, and N3. Corresponding to N greater than N4, the power ratio A is P5. Where P5 = P4 = P3 - b(N4 - N3), the power ratio A is the same as the power ratio corresponding to the number of frequency domain units carrying the demodulation reference signal being N4. Here, a and b represent the step size of the power ratio change as the number of frequency domain units changes.

[0247] Where N1, N2, N3, N4, P1, P2, P3, P4, P5, a, and b are real numbers.

[0248] In these cases, the more time-domain units carrying the demodulation reference signal, and the more time-domain units of the demodulation reference signal participating in data demodulation, the better the channel estimation or data demodulation effect. Without compromising performance, a smaller power ratio A is required. Therefore, the power ratio A is determined based on the number of frequency-domain units carrying the demodulation reference signal, which can match the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0249] In some embodiments, before the second communication node receives data, the second communication node may report one or any combination of the following parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5, a, b.

[0250] It should be noted that the second communication node is the data receiver and knows the values ​​of these parameters from the perspective of data demodulation. The first communication node can receive the parameters reported by the second communication node and determine the power ratio A between the demodulation reference signal and the corresponding data based on these parameters, so as to transmit the demodulation reference signal and the corresponding data. Thus, the second communication node is able to demodulate the received corresponding data based on the received demodulation reference signal.

[0251] In some embodiments, before receiving data, the second communication node may report one or any combination of the following parameters to the first communication node: a, b. It also receives a second signal transmitted by the first communication node and determines one or a combination of the following parameters based on measurements of the second signal: N1, N2, N3, N4, P1, P2, P3, P4, P5. Finally, it reports one or a combination of the determined parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5.

[0252] It should be noted that a and b represent the step size of the power ratio change as the number of time-domain units of the demodulated reference signal changes. These values ​​are determined by the receiver at the receiving end and do not change with time or scenario. Therefore, they can be reported to the first communication node as capability parameters to avoid frequent reporting.

[0253] The parameters N1, N2, N3, N4, P1, P2, P3, P4, and P5 are related to the scenario in which data transmission occurs. To ensure the accuracy of the power ratio A, these parameters need to change as the data transmission scenario changes. Therefore, the second communication node needs to determine these parameters based on measurements of the second signal and report the measurement results to the first communication node. This accurately determines the values ​​of the parameters related to the power ratio A, enabling the matching of the demodulated reference signal power with the corresponding data power according to the data transmission scenario, thereby improving data transmission efficiency.

[0254] In some embodiments, one or any combination of the following parameters may be determined by the first communication node or protocol: N1, N2, N3, N4. One or any combination of the following parameters may be reported by the second communication node to the third communication node: P1, P2, P3, P4, P5.

[0255] It should be noted that N1, N2, N3, and N4 correspond to the threshold values ​​for comparison based on the number N of time-domain units carrying the demodulation reference signal. These values ​​are determined by the protocol or by the first communication node, which reduces the diversity of parameter values ​​caused by different second communication nodes determining the parameter values. This reduces the complexity of the second communication node and thus the complexity of the system.

[0256] For example, when determining the power ratio A based on the number of code domain units carrying the demodulation reference signal, the following cases are possible:

[0257] (1) For example, the number of code domain units carrying the demodulation reference signal is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1. Where P1 is greater than P2.

[0258] (2) For example, the number of code domain units carrying the demodulation reference signal is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. Where N1 is less than N2 and P1 is greater than P2.

[0259] (3) For example, the number of code domain units carrying the demodulation reference signal is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is greater than P3.

[0260] (4) For example, the number of code domain units carrying the demodulation reference signal is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Where N1 is less than N2, N2 is less than N3, P1 is greater than P2, and P2 is greater than P3.

[0261] (5) For example, the number of code domain units carrying the demodulation reference signal is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3, the power ratio A is P2. Where P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined based on the difference between the number of code domain units carrying the demodulation reference signal, N, and N3.

[0262] (6) For example, the number of code domain units carrying the demodulation reference signal is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3 but greater than or equal to N2, the power ratio A is P2. Where P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined based on the difference between the number of code domain units carrying the demodulation reference signal (N) and N3. When N is less than N2, the power ratio A is P1. Where P1 = P3 + a(N3 - N2), that is, the value of the power ratio A is the same as the power ratio corresponding to the number of code domain units carrying the demodulation reference signal (N2).

[0263] (7) For example, the number of code domain units carrying the demodulation reference signal is N. Corresponding to N equal to N3, the power ratio A is P3. Corresponding to N less than N3 and greater than or equal to N2, the power ratio A is P2. Wherein, P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined based on the difference between the number of code domain units carrying the demodulation reference signal, N, and N3. Corresponding to N less than N2, the power ratio A is P1. Wherein, P1 = P3 + a(N3 - N2), that is, the value of the power ratio A is the same as the power ratio corresponding to the number of code domain units carrying the demodulation reference signal, N2. Corresponding to N greater than N3 and less than or equal to N4, the power ratio A is P4. Wherein, P4 = P3 - b(N - N3), that is, the value of the power ratio A is determined based on the difference between the number of code domain units carrying the demodulation reference signal, N, and N3. Corresponding to N greater than N4, the power ratio A is P5. Where P5 = P4 = P3 - b(N4 - N3), the power ratio A is the same as the power ratio corresponding to the number of code domain units carrying the demodulation reference signal being N4. Here, a and b represent the step size of the power ratio change as the number of code domain units changes.

[0264] Where N1, N2, N3, N4, P1, P2, P3, P4, P5, a, and b are real numbers.

[0265] In these cases, the more time-domain units carrying the demodulation reference signal, and the more time-domain units of the demodulation reference signal participating in data demodulation, the better the channel estimation or data demodulation effect. Without compromising performance, a smaller power ratio A is required. Therefore, the power ratio A is determined based on the number of code domain units carrying the demodulation reference signal, which can match the power of the demodulation reference signal with the power of the data, thereby improving data transmission efficiency.

[0266] In some embodiments, before the second communication node receives data, the second communication node may report one or any combination of the following parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5, a, b.

[0267] It should be noted that the second communication node is the data receiver and knows the values ​​of these parameters from the perspective of data demodulation. The first communication node can receive the parameters reported by the second communication node and determine the power ratio A between the demodulation reference signal and the corresponding data based on these parameters, so as to transmit the demodulation reference signal and the corresponding data. Thus, the second communication node is able to demodulate the received corresponding data based on the received demodulation reference signal.

[0268] In some embodiments, before receiving data, the second communication node may report one or any combination of the following parameters to the first communication node: a, b. It also receives a second signal transmitted by the first communication node and determines one or a combination of the following parameters based on measurements of the second signal: N1, N2, N3, N4, P1, P2, P3, P4, P5. Finally, it reports one or a combination of the determined parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5.

[0269] It should be noted that a and b represent the step size of the power ratio change as the number of time-domain units of the demodulated reference signal changes. These values ​​are determined by the receiver at the receiving end and do not change with time or scenario. Therefore, they can be reported to the first communication node as capability parameters to avoid frequent reporting.

[0270] The parameters N1, N2, N3, N4, P1, P2, P3, P4, and P5 are related to the scenario in which data transmission occurs. To ensure the accuracy of the power ratio A, these parameters need to change as the data transmission scenario changes. Therefore, the second communication node needs to determine these parameters based on measurements of the second signal and report the measurement results to the first communication node. This accurately determines the values ​​of the parameters related to the power ratio A, enabling the matching of the demodulated reference signal power with the corresponding data power according to the data transmission scenario, thereby improving data transmission efficiency.

[0271] In some embodiments, one or any combination of the following parameters may be determined by the first communication node or protocol: N1, N2, N3, N4. One or any combination of the following parameters may be reported by the second communication node to the third communication node: P1, P2, P3, P4, P5.

[0272] It should be noted that N1, N2, N3, and N4 correspond to the threshold values ​​for comparison based on the number N of time-domain units carrying the demodulation reference signal. These values ​​are determined by the protocol or by the first communication node, which reduces the diversity of parameter values ​​caused by different second communication nodes determining the parameter values. This reduces the complexity of the second communication node and thus the complexity of the system.

[0273] In some embodiments, the first parameter is determined based on the fourth parameter. The fourth parameter is used to characterize the power of constellation points obtained by modulating data using a data-based modulation scheme.

[0274] In other words, during data transmission, the source data needs to be modulated to obtain data symbols for transmission as physical signals. The demodulation reference signal is used for data demodulation, but it also creates interference, reducing the signal-to-noise ratio of the received data. Therefore, the power ratio A between the demodulation reference signal and the corresponding data can be determined based on the modulation scheme of the corresponding data to match their power, thereby improving data transmission efficiency.

[0275] For a given modulation scheme, there exists a set of candidate symbols for modulation, and the elements in this set are called constellation point symbols (i.e., constellation points in this disclosure). The modulation process involves mapping a set of bits to one element in the set, that is, mapping it to a constellation point symbol. Different constellation points have different amplitudes, and therefore different powers. The power difference between constellation point symbols represents the energy required for a transition from one constellation symbol to another. Therefore, it also characterizes the noise level and channel estimation error level of demodulation, which produces a certain error rate. Thus, the power difference between constellation point symbols obtained from data-based modulation schemes is related to the power ratio A. Therefore, the power ratio A can be determined based on the power difference between constellation point symbols in the modulation scheme, thereby improving data transmission efficiency.

[0276] In some embodiments, the first parameter is positively correlated with the fourth parameter.

[0277] In some embodiments, the number of constellation points is multiple, and the power of the constellation points includes at least one of the following: the power of each constellation point, and the power difference between any two constellation points among the multiple constellation points.

[0278] In other words, the greater the power of each constellation point and / or the power difference between any two constellation points, the smaller the noise level and channel estimation error level of the demodulation with a certain error rate. Therefore, the power ratio A can also be larger.

[0279] For example, when determining the power ratio A based on the power of each constellation symbol and / or the power difference between any two constellation symbols, the following cases are possible:

[0280] (1) Determined based on the ratio of the minimum power difference between constellation point symbols to the average power of constellation point symbols.

[0281] (2) Determined based on the ratio of the minimum power difference between constellation point symbols to the maximum power difference between constellation point symbols.

[0282] (3) Determine based on the ratio of the minimum power difference between constellation point symbols to the maximum power of constellation point symbols.

[0283] (4) Determined based on the ratio of the minimum power of the constellation point symbol to the average power of the constellation point symbol.

[0284] (5) Determined based on the ratio of the minimum power of the constellation point symbol to the maximum power difference between the constellation point symbols.

[0285] (6) Determined based on the ratio of the minimum power of the constellation point symbol to the maximum power of the constellation point symbol.

[0286] (7) Determine based on the minimum power of the constellation point symbol.

[0287] In the above scenarios, the power ratios of the constellation symbols can be directly mapped to the power ratio A between the demodulated reference signal and the corresponding data. Alternatively, the power ratios of the constellation symbols can be mapped to the power ratio A between the demodulated reference signal and the corresponding data according to their respective intervals.

[0288] In some embodiments, the first parameter is determined based on the fifth parameter. The fifth parameter is used to characterize the data transmission efficiency corresponding to the data encoding and modulation methods.

[0289] In other words, during data transmission, the source data needs to be encoded and modulated to obtain data symbols for transmission as physical signals. To ensure that the accuracy of the receiver in recovering the source data reaches the target or threshold value, the signal-to-noise ratio (SNR) of the received data needs to reach the corresponding threshold value. When the time domain unit where the demodulation reference signal is located is part or all of the time domain unit where the data is located, the demodulation reference signal is used for data demodulation but also interferes with the data, reducing the SNR of the received data. Therefore, determining the power ratio A between the demodulation reference signal and the corresponding data based on the encoding and modulation methods allows for matching the power of the demodulation reference signal and the corresponding data, thereby improving data transmission efficiency.

[0290] In some embodiments, the first parameter is negatively correlated with the fifth parameter.

[0291] In other words, different combinations of encoding and modulation methods result in different data transmission efficiencies. For example, different encoding methods can have different code rates; the higher the code rate, the higher the data transmission efficiency. Modulation methods can be 2 bits mapping one symbol, 4 bits mapping one symbol, 8 bits mapping one symbol, etc.; the more bits mapping one symbol, the higher the data transmission efficiency. The higher the data transmission efficiency corresponding to the encoding and modulation methods, the lower the required power ratio A.

[0292] For example, each combination of coding and modulation methods in the candidate set can be mapped to an index number in ascending order of data transmission efficiency, from low to high. For convenience, this is called a modulation-coding index number. The power ratio A is determined based on the modulation-coding index number. The larger the index number, the smaller the corresponding power ratio A.

[0293] When determining the power ratio A based on the modulation coding index number, the following situations are possible:

[0294] (1) For example, the modulation coding index number is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1. Where P1 is greater than P2.

[0295] (2) For example, the modulation coding index number is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. Where N1 is less than N2 and P1 is greater than P2.

[0296] (3) For example, the modulation coding index number is N. The power ratio A is P3 when N is greater than or equal to N3. The power ratio A is P2 when N is less than N3 but greater than or equal to N2. Where N2 is less than N3 and P2 is greater than P3.

[0297] (4) For example, the modulation coding index number is N. The power ratio A is P1 when N is less than or equal to N1. The power ratio A is P2 when N is greater than N1 and less than or equal to N2. The power ratio A is P3 when N is greater than or equal to N2. Where N1 is less than N2, N2 is less than N3, P1 is greater than P2, and P2 is greater than P3.

[0298] (5) For example, the modulation coding index number is N. When N is greater than or equal to N3, the power ratio A is P3. When N is less than N3, the power ratio A is P2. Wherein, P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined according to the difference between the modulation coding index numbers N and N3.

[0299] (6) For example, the modulation coding index number is N. Corresponding to N greater than or equal to N3, the power ratio A is P3. Corresponding to N less than N3 but greater than or equal to N2, the power ratio A is P2. Where P2 = P3 + a(N3 - N), that is, the value of the power ratio A is determined based on the difference between the modulation coding index numbers N and N3. Corresponding to N less than N2, the power ratio A is P1. Where P1 = P3 + a(N3 - N2), that is, the value of the power ratio A is the same as the power ratio corresponding to the modulation coding index number N2.

[0300] (7) For example, the modulation code index number is N. Corresponding to N equal to N3, the power ratio A is P3. Corresponding to N less than N3 and greater than or equal to N2, the power ratio A is P2. Where P2 = P3 + a(N3 - N), that is, the power ratio A is determined based on the difference between the modulation code index numbers N and N3. Corresponding to N less than N2, the power ratio A is P1. Where P1 = P3 + a(N3 - N2), that is, the power ratio A is the same as the power ratio corresponding to the modulation code index number N2. Corresponding to N greater than N3 and less than or equal to N4, the power ratio A is P4. Where P4 = P3 - b(N - N3), that is, the power ratio A is determined based on the difference between the modulation code index numbers N and N3. Corresponding to N greater than N4, the power ratio A is P5. Where P5 = P4 = P3 - b(N4 - N3), that is, the power ratio A is the same as the power ratio corresponding to the modulation code index number N4. Where a and b represent the step size of the power ratio change as the number of code domain units changes.

[0301] Where N1, N2, N3, N4, P1, P2, P3, P4, P5, a, and b are real numbers.

[0302] In some embodiments, before the second communication node receives data, the second communication node may report one or any combination of the following parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5, a, b.

[0303] It should be noted that the second communication node is the data receiver and knows the values ​​of these parameters from the perspective of data demodulation. The first communication node can receive the parameters reported by the second communication node and determine the power ratio A between the demodulation reference signal and the corresponding data based on these parameters, so as to transmit the demodulation reference signal and the corresponding data. Thus, the second communication node is able to demodulate the received corresponding data based on the received demodulation reference signal.

[0304] In some embodiments, before receiving data, the second communication node may report one or any combination of the following parameters to the first communication node: a, b. It also receives a second signal transmitted by the first communication node and determines one or a combination of the following parameters based on measurements of the second signal: N1, N2, N3, N4, P1, P2, P3, P4, P5. Finally, it reports one or a combination of the determined parameters to the first communication node: N1, N2, N3, N4, P1, P2, P3, P4, P5.

[0305] It should be noted that a and b represent the step size of the power ratio change as the modulation and coding index number changes. These are determined by the receiver at the receiving end and do not change with time or scenario. Therefore, they can be reported to the first communication node as capability parameters to avoid frequent reporting.

[0306] The parameters N1, N2, N3, N4, P1, P2, P3, P4, and P5 are related to the scenario in which data transmission occurs. To ensure the accuracy of the power ratio A, these parameters need to change as the data transmission scenario changes. Therefore, the second communication node needs to determine these parameters based on measurements of the second signal and report the measurement results to the first communication node. This accurately determines the values ​​of the parameters related to the power ratio A, enabling the matching of the demodulated reference signal power with the corresponding data power according to the data transmission scenario, thereby improving data transmission efficiency.

[0307] In some embodiments, the first parameter is determined based on the sixth parameter. The sixth parameter is used to characterize the number of receiving antennas of the second communication node.

[0308] In other words, as the number of receiving antennas increases, the receiving side's ability to process received data using the spatial correlation of these antennas is enhanced, thus reducing the required power ratio A. Therefore, the power ratio A can be determined based on the number of receiving antennas at the second communication node.

[0309] In some embodiments, the first parameter is negatively correlated with the sixth parameter.

[0310] In other words, the more receiving antennas there are, the less power ratio A is required. Conversely, the fewer antennas there are, the less power ratio A is required.

[0311] For example, a power ratio A can be determined for each number of receiving antennas. The larger the number of receiving antennas, the smaller the power ratio A.

[0312] In some embodiments, the first parameter is determined based on the seventh parameter. The seventh parameter is used to characterize the received power and / or received signal-to-noise ratio corresponding to the antenna port on the first communication node, and the antenna port is used to transmit the first signal and data.

[0313] In other words, the demodulation reference signal and the corresponding data are transmitted through the antenna port on the first communication node. The received power of the data varies depending on the antenna port, and the received signal-to-noise ratio (SNR) also varies between ports. Therefore, while ensuring that the data demodulation accuracy reaches the threshold value, the required power ratio A varies for different ports. Thus, the power ratio A is determined based on the antenna port to which the demodulation reference signal belongs. The received power can be referred to as the reference signal received power (RSRP).

[0314] For example, the power ratio A corresponding to the antenna port to which the demodulated reference signal belongs can be determined by mapping the index number of the antenna port to which the demodulated reference signal belongs. For instance, as shown in Table 1, p0, p1, p2, and p3 are the index numbers of the antenna ports, and r0, r1, r2, and r3 are the values ​​of the power ratio A. Here, p0 corresponds to r0, p1 corresponds to r1, p2 corresponds to r2, and p3 corresponds to r3.

[0315] Table 1

[0316] Index number of the antenna port to which the demodulation reference signal belongs The corresponding power ratio A p0 r0 p1 r1 p2 r2 p3 r3

[0317] For example, the power ratio A corresponding to the antenna port index number can be determined by the difference between the index number of the corresponding antenna port and the index number of a preset antenna port. For instance, the power ratio A corresponding to the antenna port with index number pi is (pi-pt)*d+rt, where pt is the index number of the reference antenna port, rt is the power ratio A corresponding to the reference antenna port, (pi-pt) is the difference between the index number of the antenna port with index number pi and the index number of the reference antenna port, d is the step size factor for the port number, and * indicates a product operation. That is, the difference between the power ratio A corresponding to the antenna port with index number pi and the power ratio A corresponding to the reference antenna port is proportional to the difference between the index number of the antenna port with index number pi and the index number of the reference antenna port.

[0318] In some embodiments, the first parameter is negatively correlated with the seventh parameter.

[0319] In other words, the higher the received power and / or received signal-to-noise ratio of the antenna port on the first communication node, the better the channel estimation effect and the smaller the required power ratio A, and vice versa.

[0320] In some embodiments, the first parameter is determined based on an eighth parameter, which is used to characterize the ratio of the target quantity to the number of resource elements carrying data, and the target quantity is the number of resource elements that simultaneously carry the first signal and data.

[0321] In other words, the demodulation reference signal will interfere with the data. Different ratios result in different levels of interference, thus affecting the required power ratio A. Therefore, the power ratio A is determined based on the ratio of the total number of resource elements to the number of resource elements carrying the data; that is, the power ratio A can be determined based on the merging method of the demodulation reference signal and the corresponding data.

[0322] For example, when the ratio of the target quantity to the number of resource elements carrying data is 1, that is, when the ratio is at its maximum, it means that the resource elements carrying the demodulation reference signal are all the resource elements carrying the corresponding data. In this case, the power ratio A corresponds to the elements in set E.

[0323] When the ratio of the number of targets to the number of resource elements carrying data is greater than 0 and less than 1, it indicates that the resource elements carrying the demodulation reference signal are part of the resource elements carrying the corresponding data; that is, a portion of the resource elements carrying the corresponding data also carry the demodulation reference signal. When the ratio of the number of targets to the number of resource elements carrying data is equal to 0, it indicates that the number of resource elements simultaneously carrying the first signal and data is zero; that is, the resource elements carrying the demodulation reference signal are different from the resource elements carrying the corresponding data. In these two cases, the power ratio A corresponds to an element in set F. Set E and set F are not the same, or set E and set F have no common elements. The power ratio A corresponding to different ratios of the number of targets to the number of resource elements carrying data can be determined based on set E and set F.

[0324] In some embodiments, the first parameter is negatively correlated with the eighth parameter.

[0325] In other words, when the ratio of the number of target data elements to the number of resource elements carrying the data is 1 (i.e., when this ratio is at its maximum), it means that the resource elements carrying the demodulation reference signal are all the resource elements carrying the corresponding data. That is, each resource element carrying the corresponding data simultaneously carries the demodulation reference signal. At this point, the interference from the demodulation reference signal on the data is at its maximum. Therefore, the power ratio A should be minimized to reduce the interference from the demodulation reference signal on the data to the greatest extent possible.

[0326] For example, if all resource elements carrying the demodulation reference signal are also resource elements carrying the corresponding data, the power ratio A is less than or equal to a first threshold value. If only a portion of the resource elements carrying the demodulation reference signal are also resource elements carrying the corresponding data, or if the resource elements carrying the demodulation reference signal are different from the resource elements carrying the corresponding data, the power ratio A is greater than the first threshold value. For example, the first threshold value is 1 in linear terms. The first threshold value is 0 in dB terms.

[0327] It should be noted that, corresponding to the above embodiments, the merging method of the demodulation reference signal and the corresponding data can also be determined based on the power ratio A. The following embodiments illustrate how the merging method of the demodulation reference signal and the corresponding data can also be determined based on the power ratio A.

[0328] Figure 3 A flowchart illustrating another data transmission method is shown, such as... Figure 3 As shown, before or after step S201, the method further includes S301:

[0329] S301. Determine the eighth parameter based on the first parameter.

[0330] The eighth parameter is used to characterize the ratio of the total number of resource elements to the number of resource elements carrying data. The total number of resource elements is equal to the sum of the number of resource elements carrying the first signal and the number of resource elements carrying data.

[0331] In some embodiments, the first parameter is negatively correlated with the eighth parameter.

[0332] In some embodiments, the value of the power ratio A can be indicated by the indication information, and the method of combining the demodulation reference signal and the corresponding data is determined based on the power ratio A.

[0333] For example, if the resource elements corresponding to the demodulation reference signal are all the resource elements corresponding to the data, the power ratio A corresponds to an element in set E. If the resource elements corresponding to the demodulation reference signal are only a portion of the resource elements corresponding to the data, or if the resource elements corresponding to the demodulation reference signal and the data are different, the power ratio A corresponds to an element in set F. In this case, set E and set F are different, or set E and set F have no common elements.

[0334] For example, if all resource elements carrying the demodulation reference signal are also resource elements carrying the corresponding data, the power ratio A is less than or equal to a first threshold value. If only a portion of the resource elements carrying the demodulation reference signal are also resource elements carrying the corresponding data, or if the resource elements carrying the demodulation reference signal are different from the resource elements carrying the corresponding data, the power ratio A is greater than the first threshold value. For example, in linear terms, the first threshold value is 1. In dB terms, the first threshold value is 0.

[0335] It should be noted that the relationship between the first parameter and the eighth parameter can be found in the description in the above embodiments, and will not be repeated here.

[0336] In some embodiments, the first parameter is negatively correlated with the ninth parameter. The ninth parameter is the channel parameter of the channel through which the first communication node transmits data to the second communication node.

[0337] In other words, as the data transmission scenario changes, the channel parameters of the channel through which the first communication node transmits data to the second communication node also change. The better the channel quality characterized by the channel parameters, the better the channel estimation effect, and therefore, the smaller the required power ratio A.

[0338] For example, channel parameters can be parameters used to characterize channel conditions and indicate channel quality, such as signal strength, signal-to-noise ratio (SNR), and transmission rate. Signal strength refers to the strength or power of the signal in the channel. Higher signal strength indicates better channel conditions. Signal-to-noise ratio (SNR) refers to the ratio between signal and noise. Higher SNR indicates better channel quality. Transmission rate refers to the data transmission rate achievable in the channel. Higher transmission rate indicates better channel bandwidth and capacity.

[0339] In some embodiments, the second communication node can determine correction information based on the channel parameters of the channel through which the data is transmitted. The power ratio 1 corresponding to the preset number of receiving antennas is determined by the protocol or the first communication node. The second communication node can report the correction information relative to the power ratio 1 to the first communication node. The power ratio A can be determined based on the power ratio 1 and the correction information, thereby improving the accuracy of the determined power ratio A.

[0340] In some embodiments, the power ratio A consists of two components, one of which is determined based on the modulation method of the data, and the other is indicated by indication information.

[0341] In other words, the second communication node can determine the adjustment value based on the channel parameters of the data transmission channel. Due to changes in the channel environment, the power ratio determined by the data modulation method may differ from the actual required power ratio. However, by indicating the adjustment value through indication information, adjustments can be made to meet the flexibility required to adapt to the channel environment. Compared to the power ratio A, the adjustment value has a smaller range of variation, and indicating the adjustment value is less complex than directly indicating the power ratio A. Therefore, the indication information indicates another component of the power ratio A, namely the adjustment term, thereby improving the accuracy of the determined power ratio A.

[0342] This disclosure also provides another data transmission method, applied to a second communication node, such as... Figure 4 As shown, the data transmission method may include S401:

[0343] S401, Receive the first signal and the data corresponding to the first signal sent by the first communication node.

[0344] The first parameter is the ratio between the power of the received first signal and the power of the received data.

[0345] In other words, the ratio between the power of receiving the first signal and the power of receiving data is the same as the ratio between the power of transmitting the first signal and the power of transmitting the data corresponding to the first signal. The larger the ratio between the power of transmitting the first signal and the power of transmitting the data corresponding to the first signal, the greater the power allocated to the first signal, and consequently, the smaller the power allocated to the data, and vice versa. This achieves the allocation of power between the reference signal and the data when data is transmitted from the transmitting end (i.e., the first communication node in this disclosure) to the receiving end (i.e., the second communication node in this disclosure).

[0346] It should be noted that the descriptions of the first signal and the first parameter can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

[0347] In some embodiments, such as Figure 5 As shown, the second communication node receives instruction information from the first communication node, and receives data transmitted by the second communication node, along with a first signal corresponding to the data, according to the instruction information. The second communication node demodulates the corresponding data based on the first signal. The first signal and the corresponding data are transmitted at a power ratio A. The first signal is used for demodulating the corresponding data.

[0348] In some embodiments, the first parameter is determined based on the second parameter. The second parameter is used to characterize the number of resource elements carrying data or the number of resource elements carrying data and the first signal.

[0349] It should be noted that the description of the second parameter can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

[0350] In some embodiments, when the second parameter and the third parameter are positively correlated, the first parameter and the second parameter are negatively correlated. The third parameter is used to characterize the number of resource elements carrying the first signal. Alternatively, when the second parameter and the third parameter are not correlated, the first parameter and the second parameter are positively correlated.

[0351] It should be noted that the relationship between the second and third parameters, as well as the relationship between the first and second parameters, can be found in the descriptions in the above embodiments, and will not be repeated here.

[0352] In some embodiments, the first parameter is determined based on the third parameter. The third parameter is used to characterize the number of resource elements carrying the first signal or the codeword length of the code field unit carrying the first signal.

[0353] In some embodiments, the first parameter is negatively correlated with the third parameter.

[0354] It should be noted that the description of the third parameter and the relationship between the first and third parameters can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

[0355] In some embodiments, the first parameter is determined based on the fourth parameter. The fourth parameter is used to characterize the power of constellation points obtained by modulating data using a data-based modulation scheme.

[0356] In some embodiments, the first parameter is positively correlated with the fourth parameter.

[0357] It should be noted that the description of the fourth parameter and the relationship between the first and fourth parameters can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

[0358] In some embodiments, the number of constellation points is multiple, and the power of the constellation points includes at least one of the following: the power of each constellation point, and the power difference between any two constellation points among the multiple constellation points.

[0359] It should be noted that the description of constellation points can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

[0360] In some embodiments, the first parameter is determined based on the fifth parameter. The fifth parameter is used to characterize the data transmission efficiency corresponding to the data encoding and modulation methods.

[0361] In some embodiments, the first parameter is negatively correlated with the fifth parameter.

[0362] It should be noted that the description of the fifth parameter and the relationship between the first and fifth parameters can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

[0363] In some embodiments, the first parameter is determined based on the sixth parameter. The sixth parameter is used to characterize the number of receiving antennas of the second communication node.

[0364] In some embodiments, the first parameter is negatively correlated with the sixth parameter.

[0365] It should be noted that the description of the sixth parameter and the relationship between the first parameter and the sixth parameter can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

[0366] In some embodiments, the first parameter is determined based on the seventh parameter. The seventh parameter is used to characterize the received power and / or received signal-to-noise ratio corresponding to the antenna port on the first communication node, and the antenna port is used to transmit the first signal and data.

[0367] In some embodiments, the first parameter is negatively correlated with the seventh parameter.

[0368] It should be noted that the description of the seventh parameter and the relationship between the first parameter and the seventh parameter can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

[0369] In some embodiments, the first parameter is determined based on an eighth parameter, which is used to characterize the ratio of the target quantity to the number of resource elements carrying data, and the target quantity is the number of resource elements that simultaneously carry the first signal and data.

[0370] In some embodiments, the first parameter is negatively correlated with the eighth parameter.

[0371] It should be noted that the description of the eighth parameter and the relationship between the first parameter and the eighth parameter can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

[0372] Figure 6 A flowchart illustrating another data transmission method is shown, such as... Figure 6 As shown, before or after step S401, the method further includes S501:

[0373] S501. Determine the eighth parameter based on the first parameter.

[0374] The eighth parameter is used to characterize the ratio of the total number of resource elements to the number of resource elements carrying data. The total number of resource elements is equal to the sum of the number of resource elements carrying the first signal and the number of resource elements carrying data.

[0375] In some embodiments, the eighth parameter is negatively correlated with the first parameter.

[0376] It should be noted that the description of the eighth parameter and the relationship between the first parameter and the eighth parameter can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

[0377] In some embodiments, the first parameter is negatively correlated with the ninth parameter. The ninth parameter is the channel parameter of the channel through which the first communication node transmits data to the second communication node.

[0378] It should be noted that the description of the channel parameters and the relationship between the first parameter and the ninth parameter can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

[0379] The following describes the data transmission method provided in the above embodiment using the interaction between the first communication node and the second communication node as an example. Figure 7 As shown, it includes:

[0380] S601, the first communication node sends a first signal and data to the second communication node based on the first parameters. Correspondingly, the second communication node receives the first signal and data sent by the first communication node.

[0381] In other words, based on the interaction between the first communication node and the second communication node, the embodiments of this disclosure realize the transmission of the first signal and data sent by the first communication node to the second communication node based on the power ratio.

[0382] It is understood that, in order to achieve the above-mentioned functions, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily recognize that, based on the algorithmic steps of the examples described in conjunction with the embodiments of this disclosure, 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.

[0383] This disclosure embodiment can divide the communication device 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.

[0384] Figure 8 This is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure. Figure 1 The communication device can be applied to the base station and perform the above-mentioned functions. Figure 2 The data transmission method shown. For example... Figure 8 As shown, the communication device 700 includes: a transmission module 701.

[0385] The transmission module 701 is used to acquire a first parameter. The first parameter is used to characterize the ratio between the power of transmitting the first signal and the power of the data corresponding to the first signal.

[0386] The transmission module 701 is also used to send a first signal and data to the second communication node based on the first parameter.

[0387] In some embodiments, the first parameter is determined based on the second parameter. The second parameter is used to characterize the number of resource elements carrying data or the number of resource elements carrying data and the first signal.

[0388] In some embodiments, when the second parameter and the third parameter are positively correlated, the first parameter and the second parameter are negatively correlated. The third parameter is used to characterize the number of resource elements carrying the first signal. Alternatively, when the second parameter and the third parameter are not correlated, the first parameter and the second parameter are positively correlated.

[0389] In some embodiments, the first parameter is determined based on the third parameter. The third parameter is used to characterize the number of resource elements carrying the first signal or the codeword length of the code field unit carrying the first signal.

[0390] In some embodiments, the first parameter is negatively correlated with the third parameter.

[0391] In some embodiments, the first parameter is determined based on the fourth parameter. The fourth parameter is used to characterize the power of constellation points obtained by modulating data using a data-based modulation scheme.

[0392] In some embodiments, the first parameter is positively correlated with the fourth parameter.

[0393] In some embodiments, the number of constellation points is multiple, and the power of the constellation points includes at least one of the following: the power of each constellation point, and the power difference between any two constellation points among the multiple constellation points.

[0394] In some embodiments, the first parameter is determined based on the fifth parameter. The fifth parameter is used to characterize the data transmission efficiency corresponding to the data encoding and modulation methods.

[0395] In some embodiments, the first parameter is negatively correlated with the fifth parameter.

[0396] In some embodiments, the first parameter is determined based on the sixth parameter. The sixth parameter is used to characterize the number of receiving antennas of the second communication node.

[0397] In some embodiments, the first parameter is negatively correlated with the sixth parameter.

[0398] In some embodiments, the first parameter is determined based on the seventh parameter. The seventh parameter is used to characterize the received power and / or received signal-to-noise ratio corresponding to the antenna port on the first communication node, and the antenna port is used to transmit the first signal and data.

[0399] In some embodiments, the first parameter is negatively correlated with the seventh parameter.

[0400] In some embodiments, the first parameter is determined based on an eighth parameter, which is used to characterize the ratio of the target quantity to the number of resource elements carrying data, and the target quantity is the number of resource elements that simultaneously carry the first signal and data.

[0401] In some embodiments, the first parameter is negatively correlated with the eighth parameter.

[0402] In some embodiments, the communication device 700 further includes a processing module 702. The processing module 702 is configured to determine an eighth parameter based on a first parameter. The eighth parameter characterizes the ratio of the total number of resource elements to the number of resource elements carrying data, wherein the total number of resource elements is equal to the sum of the number of resource elements carrying the first signal and the number of resource elements carrying data.

[0403] In some embodiments, the eighth parameter is negatively correlated with the first parameter.

[0404] In some embodiments, the first parameter is negatively correlated with the ninth parameter. The ninth parameter is the channel parameter of the channel through which the first communication node transmits data to the second communication node.

[0405] Figure 9 This is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure. Figure 2 The communication device 800 can be applied to the second communication node and perform the above-mentioned functions. Figure 5 The data transmission method shown. For example... Figure 9 As shown, the communication device 800 includes: a transmission module 801.

[0406] The transmission module 801 is used to receive a first signal and corresponding data sent by the first communication node. The ratio between the power of the received first signal and the power of the received data is a first parameter.

[0407] In some embodiments, the first parameter is determined based on the second parameter. The second parameter is used to characterize the number of resource elements carrying data or the number of resource elements carrying data and the first signal.

[0408] In some embodiments, when the second parameter and the third parameter are positively correlated, the first parameter and the second parameter are negatively correlated. The third parameter is used to characterize the number of resource elements carrying the first signal. Alternatively, when the second parameter and the third parameter are not correlated, the first parameter and the second parameter are positively correlated.

[0409] In some embodiments, the first parameter is determined based on the third parameter. The third parameter is used to characterize the number of resource elements carrying the first signal or the codeword length of the code field unit carrying the first signal.

[0410] In some embodiments, the first parameter is negatively correlated with the third parameter.

[0411] In some embodiments, the first parameter is determined based on the fourth parameter. The fourth parameter is used to characterize the power of constellation points obtained by modulating data using a data-based modulation scheme.

[0412] In some embodiments, the first parameter is positively correlated with the fourth parameter.

[0413] In some embodiments, the number of constellation points is multiple, and the power of the constellation points includes at least one of the following: the power of each constellation point, and the power difference between any two constellation points among the multiple constellation points.

[0414] In some embodiments, the first parameter is determined based on the fifth parameter. The fifth parameter is used to characterize the data transmission efficiency corresponding to the data encoding and modulation methods.

[0415] In some embodiments, the first parameter is negatively correlated with the fifth parameter.

[0416] In some embodiments, the first parameter is determined based on the sixth parameter. The sixth parameter is used to characterize the number of receiving antennas of the second communication node.

[0417] In some embodiments, the first parameter is negatively correlated with the sixth parameter.

[0418] In some embodiments, the first parameter is determined based on the seventh parameter. The seventh parameter is used to characterize the received power and / or received signal-to-noise ratio corresponding to the antenna port on the first communication node, and the antenna port is used to transmit the first signal and data.

[0419] In some embodiments, the first parameter is negatively correlated with the seventh parameter.

[0420] In some embodiments, the first parameter is determined based on an eighth parameter, which is used to characterize the ratio of the target quantity to the number of resource elements carrying data, and the target quantity is the number of resource elements that simultaneously carry the first signal and data.

[0421] In some embodiments, the first parameter is negatively correlated with the eighth parameter.

[0422] In some embodiments, the communication device 800 further includes a processing module 802. The processing module 802 is configured to determine an eighth parameter based on a first parameter. The eighth parameter characterizes the ratio of the total number of resource elements to the number of resource elements carrying data, wherein the total number of resource elements is equal to the sum of the number of resource elements carrying the first signal and the number of resource elements carrying data.

[0423] In some embodiments, the eighth parameter is negatively correlated with the first parameter.

[0424] In some embodiments, the first parameter is negatively correlated with the ninth parameter. The ninth parameter is the channel parameter of the channel through which the first communication node transmits data to the second communication node.

[0425] In implementing the functionality of the integrated modules described above using hardware, this disclosure provides another possible structure for the communication device involved in the above embodiments. For example... Figure 10As shown, the communication device 900 includes a processor 902 and a bus 904. Optionally, the communication device may also include a memory 901. In some embodiments, the communication device may also include a communication interface 903.

[0426] Processor 902 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 902 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 conjunction with embodiments of this disclosure. Processor 902 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.

[0427] The communication interface 903 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.

[0428] The memory 901 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 media or other magnetic storage devices, 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.

[0429] In one possible implementation, the memory 901 can exist independently of the processor 902. The memory 901 can be connected to the processor 902 via a bus 904 and is used to store instructions or program code. When the processor 902 calls and executes the instructions or program code stored in the memory 901, it can implement the data transmission method provided in this embodiment of the disclosure.

[0430] In another possible implementation, the memory 901 can also be integrated with the processor 902.

[0431] The 904 bus can be an extended industry standard architecture (EISA) bus, etc. The 904 bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 10 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.

[0432] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer, cause the computer to perform a data transmission method as described in any of the above embodiments.

[0433] Exemplary examples of computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0434] This disclosure provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the data transmission method described in any of the above embodiments.

[0435] The above description is merely a specific embodiment 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 data transmission method, characterized in that, Applied to a first communication node, the method includes: Obtain the first parameter; the first parameter is used to characterize the ratio between the power of transmitting the first signal and the power of transmitting the data corresponding to the first signal; Based on the first parameter, the first signal and the data are sent to the second communication node.

2. The method according to claim 1, characterized in that, The first parameter is determined based on the second parameter; The second parameter is used to characterize the number of resource elements carrying the data or the number of resource elements carrying the data and the first signal.

3. The method according to claim 2, characterized in that, When the second parameter and the third parameter are positively correlated, the first parameter is negatively correlated with the second parameter; the third parameter is used to characterize the number of resource elements carrying the first signal; or, When the second parameter is not related to the third parameter, the first parameter is positively correlated with the second parameter.

4. The method according to claim 1, characterized in that, The first parameter is determined based on the third parameter; the third parameter is used to characterize the number of resource elements carrying the first signal or the codeword length of the code field unit carrying the first signal.

5. The method according to claim 4, characterized in that, The first parameter is negatively correlated with the third parameter.

6. The method according to claim 1, characterized in that, The first parameter is determined based on the fourth parameter; the fourth parameter is used to characterize the power of the constellation points obtained by modulating the data based on the modulation method of the data.

7. The method according to claim 6, characterized in that, The first parameter is positively correlated with the fourth parameter.

8. The method according to claim 6, characterized in that, The number of constellation points is multiple, and the power of the constellation points includes at least one of the following: The power of each constellation point, and the power difference between any two constellation points among the plurality of constellation points.

9. The method according to claim 1, characterized in that, The first parameter is determined based on the fifth parameter; the fifth parameter is used to characterize the data transmission efficiency corresponding to the encoding and modulation methods of the data.

10. The method according to claim 9, characterized in that, The first parameter is negatively correlated with the fifth parameter.

11. The method according to claim 1, characterized in that, The first parameter is determined based on the sixth parameter; the sixth parameter is used to characterize the number of receiving antennas of the second communication node.

12. The method according to claim 11, characterized in that, The first parameter is negatively correlated with the sixth parameter.

13. The method according to claim 1, characterized in that, The first parameter is determined based on the seventh parameter; the seventh parameter is used to characterize the received power and / or received signal-to-noise ratio corresponding to the antenna port on the first communication node, and the antenna port is used to transmit the first signal and the data.

14. The method according to claim 13, characterized in that, The first parameter is negatively correlated with the seventh parameter.

15. The method according to claim 1, characterized in that, The first parameter is determined based on the eighth parameter, which is used to characterize the ratio of the target quantity to the number of resource elements carrying the data. The target quantity is the number of resource elements that simultaneously carry the first signal and the data.

16. The method according to claim 15, characterized in that, The first parameter is negatively correlated with the eighth parameter.

17. The method according to claim 1, characterized in that, The method further includes: Based on the first parameter, determine the eighth parameter; The eighth parameter is used to characterize the ratio of the total number of resource elements to the number of resource elements carrying the data, wherein the total number of resource elements is equal to the sum of the number of resource elements carrying the first signal and the number of resource elements carrying the data.

18. The method according to claim 17, characterized in that, The eighth parameter is negatively correlated with the first parameter.

19. The method according to claim 1, characterized in that, The first parameter is negatively correlated with the ninth parameter; the ninth parameter is the channel parameter of the channel through which the first communication node transmits data to the second communication node.

20. A data transmission method, characterized in that, Applied to a second communication node, the method includes: The system receives a first signal sent by a first communication node and data corresponding to the first signal; the ratio between the power of receiving the first signal and the power of receiving the data is a first parameter.

21. The method according to claim 20, characterized in that, The first parameter is determined based on the second parameter; The second parameter is used to characterize the number of resource elements carrying the data or the number of resource elements carrying the data and the first signal.

22. The method according to claim 21, characterized in that, When the second parameter and the third parameter are positively correlated, the first parameter is negatively correlated with the second parameter; the third parameter is used to characterize the number of resource elements carrying the first signal; or, When the second parameter is not related to the third parameter, the first parameter is positively correlated with the second parameter.

23. The method according to claim 20, characterized in that, The first parameter is determined based on the third parameter; the third parameter is used to characterize the number of resource elements carrying the first signal or the codeword length of the code field unit carrying the first signal.

24. The method according to claim 23, characterized in that, The first parameter is negatively correlated with the third parameter.

25. The method according to claim 20, characterized in that, The first parameter is determined based on the fourth parameter; the fourth parameter is used to characterize the power of the constellation points obtained by modulating the data based on the modulation method of the data.

26. The method according to claim 25, characterized in that, The first parameter is positively correlated with the fourth parameter.

27. The method according to claim 25, characterized in that, The number of constellation points is multiple, and the power of the constellation points includes at least one of the following: The power of each constellation point, and the power difference between any two constellation points among the plurality of constellation points.

28. The method according to claim 20, characterized in that, The first parameter is determined based on the fifth parameter; the fifth parameter is used to characterize the data transmission efficiency corresponding to the encoding and modulation methods of the data.

29. The method according to claim 28, characterized in that, The first parameter is negatively correlated with the fifth parameter.

30. The method according to claim 20, characterized in that, The first parameter is determined based on the sixth parameter; the sixth parameter is used to characterize the number of receiving antennas of the second communication node.

31. The method according to claim 30, characterized in that, The first parameter is negatively correlated with the sixth parameter.

32. The method according to claim 20, characterized in that, The first parameter is determined based on the seventh parameter; the seventh parameter is used to characterize the received power and / or received signal-to-noise ratio corresponding to the antenna port on the first communication node, and the antenna port is used to transmit the first signal and the data.

33. The method according to claim 32, characterized in that, The first parameter is negatively correlated with the seventh parameter.

34. The method according to claim 20, characterized in that, The first parameter is determined based on the eighth parameter, which is used to characterize the ratio of the target quantity to the number of resource elements carrying the data. The target quantity is the number of resource elements that simultaneously carry the first signal and the data.

35. The method according to claim 34, characterized in that, The first parameter is negatively correlated with the eighth parameter.

36. The method according to claim 20, characterized in that, The method further includes: Based on the first parameter, determine the eighth parameter; The eighth parameter is used to characterize the ratio of the total number of resource elements to the number of resource elements carrying the data, wherein the total number of resource elements is equal to the sum of the number of resource elements carrying the first signal and the number of resource elements carrying the data.

37. The method according to claim 36, characterized in that, The eighth parameter is negatively correlated with the first parameter.

38. The method according to claim 20, characterized in that, The first parameter is negatively correlated with the ninth parameter; the ninth parameter is the channel parameter of the channel through which the first communication node transmits data to the second communication node.

39. A communication device, characterized in that, include: Memory and processor; Memory and processor are coupled; The memory is used to store instructions that can be executed by the processor; When the processor executes the instructions, it performs the method as described in any one of claims 1-38.

40. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method as described in any one of claims 1-38.

41. A computer program product, characterized in that, The computer program product includes computer program instructions that, when executed, implement the method as described in any one of claims 1-38.

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