Reference signal generation method and device, storage medium and system

Abstract

The invention provides a reference signal generation method and device, a storage medium and a system. The method comprises the following steps: acquiring a basic carrier index of a target basic carrier of a to-be-generated reference signal; determining a subcarrier index set of the target basic carrier; determining a global sequence index corresponding to each subcarrier index according to the subcarrier index set, the basic carrier index and the total number of subcarriers contained in the target basic carrier; and determining a first pilot value of each global sequence index according to a preset global reference sequence, and determining a reference signal of the target basic carrier according to a plurality of first pilot values. According to the invention, the problem of signal distortion caused by high peak-to-average power ratio of the aggregated signal due to the same reference signals of different basic carriers in the existing multi-carrier aggregation is solved.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and more specifically, to a method for generating a reference signal, a device for generating a reference signal, a computer-readable storage medium, and a system for generating a reference signal. Background Technology

[0002] In multi-carrier aggregation communication scenarios, the system typically uses multiple base carriers to coordinate data transmission in order to improve spectrum utilization and transmission rate. The reference signal, as a crucial signal in the communication process, is used for channel estimation, synchronization, and related signal processing; therefore, the way the reference signal is generated directly affects the system's transmission performance.

[0003] However, in existing technologies, different base carriers often employ the same reference signal generation method in multi-carrier aggregation scenarios, resulting in identical reference signals across different base carriers. Because identical reference signals on multiple base carriers are prone to in-phase superposition during aggregation transmission, the instantaneous peak power of the aggregated signal increases, leading to a higher peak-to-average power ratio (PAPR). An excessively high PAPR not only reduces the efficiency of the transmitter's power amplifier but also easily causes signal clipping, nonlinear distortion, and other problems, ultimately affecting signal transmission quality and system communication performance.

[0004] Therefore, how to optimize the generation of reference signals in multi-carrier aggregation scenarios has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The main objective of this application is to provide a method for generating a reference signal, a device for generating a reference signal, a computer-readable storage medium, and a system for generating a reference signal, so as to at least solve the problem that in existing multi-carrier aggregation, the reference signals of different basic carriers are the same, resulting in a high peak-to-average power ratio of the aggregated signal, which in turn leads to signal distortion.

[0006] To achieve the above objectives, according to one aspect of this application, a method for generating a reference signal is provided, comprising: obtaining a base carrier index of a target base carrier to be used to generate a reference signal, the base carrier index representing a first position number of the target base carrier in an aggregated bandwidth, the aggregated bandwidth including a plurality of base carriers; determining a set of subcarrier indexes of the target base carrier, the subcarrier index set being a set of second position numbers of a plurality of subcarriers of the target base carrier within the target base carrier; determining a global sequence index corresponding to each subcarrier index based on the subcarrier index set, the base carrier index, and the total number of subcarriers included in the target base carrier, the global sequence index representing the position of the subcarrier in a preset global reference sequence; determining a first pilot value for each of the global sequence indices based on the preset global reference sequence, and determining the reference signal of the target base carrier based on a plurality of the first pilot values, the first pilot value being a signal value used to determine the reference signal at the position of the subcarrier.

[0007] Optionally, determining the global sequence index corresponding to each subcarrier index based on the subcarrier index set, the base carrier index, and the total number of subcarriers contained in the target base carrier includes: determining the first product as the product of the base carrier index and the total number of subcarriers contained in the target base carrier; and determining the global sequence index corresponding to each subcarrier index as the sum of each subcarrier index and the first product.

[0008] Optionally, after determining the first pilot value of each global sequence index according to the preset global reference sequence, and determining the reference signal of the target base carrier according to the plurality of first pilot values, the method further includes: obtaining the total number of subcarriers contained in the target base carrier; determining the center subcarrier index at the center position according to the total number of subcarriers; and setting the first pilot value of the subcarrier corresponding to the center subcarrier index to zero.

[0009] Optionally, determining a first pilot value for each global sequence index based on a preset global reference sequence, and determining a reference signal for the target base carrier based on a plurality of first pilot values, includes: determining each subcarrier index corresponding to each first pilot value; and determining the reference signal for the target base carrier based on each subcarrier index and each first pilot value.

[0010] Optionally, determining the subcarrier index set of the target base carrier includes: obtaining the total number of subcarriers contained in the target base carrier; determining a center subcarrier index based on the total number of subcarriers, wherein the center subcarrier index is the index of the subcarrier at the center position of the target base carrier; determining a preliminary subcarrier index set of the target base carrier, wherein the preliminary subcarrier index set includes the indices of all the subcarriers of the target base carrier; and removing the center subcarrier index from the preliminary subcarrier index set to obtain the subcarrier index set.

[0011] Optionally, after determining the reference signal of the target base carrier based on a plurality of first pilot values, the method further includes: calculating the peak-to-average power ratio of the transmitted signal formed based on the reference signal; outputting the reference signal if the peak-to-average power ratio is lower than a preset peak-to-average power ratio; and correcting the reference signal if the peak-to-average power ratio is greater than or equal to the preset peak-to-average power ratio to obtain the corrected reference signal.

[0012] Optionally, the reference signal is corrected to obtain the corrected reference signal, including: offsetting each of the global sequence indices based on a preset target offset to obtain a plurality of corrected global sequence indices; determining a second pilot value for each of the corrected global sequence indices according to the global reference sequence; and determining the corrected reference signal for the target base carrier according to the plurality of second pilot values.

[0013] According to another aspect of this application, a reference signal generation apparatus is provided, comprising: a first acquisition unit, configured to acquire a base carrier index of a target base carrier to be used to generate a reference signal, the base carrier index representing a first position number of the target base carrier in an aggregated bandwidth, the aggregated bandwidth including a plurality of base carriers; a first determination unit, configured to determine a set of subcarrier indexes of the target base carrier, the subcarrier index set being a set of second position numbers of a plurality of subcarriers of the target base carrier within the target base carrier; a second determination unit, configured to determine a global sequence index corresponding to each subcarrier index based on the subcarrier index set, the base carrier index, and the total number of subcarriers included in the target base carrier, the global sequence index representing the position of the subcarrier in a preset global reference sequence; and a second acquisition unit, configured to determine a first pilot value for each global sequence index based on the preset global reference sequence, and determine the reference signal of the target base carrier based on a plurality of the first pilot values, the first pilot value being a signal value used to determine the reference signal at the position of the subcarrier.

[0014] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform any of the methods described.

[0015] According to another aspect of this application, a reference signal generation system is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including methods for performing any one of the methods described.

[0016] By applying the technical solution of this application, the first position number of the target base carrier in the aggregation bandwidth is obtained, and combined with the second position number of each subcarrier within the target base carrier, the global sequence index corresponding to each subcarrier is determined. Then, based on a preset global reference sequence, the first pilot value corresponding to each subcarrier is determined, enabling different base carriers to obtain different pilot values ​​based on different global sequence indices and generate corresponding reference signals. This avoids the situation in existing multi-carrier aggregation where different base carriers use the same reference signal, reduces the consistency between reference signals of different base carriers, weakens the in-phase superposition effect during multi-carrier aggregation, thereby reducing the peak-to-average power ratio of the aggregated signal, reducing signal distortion, improving the rationality of reference signal generation and the reliability of communication transmission, and solving the problem in existing multi-carrier aggregation where the reference signals of different base carriers are the same, leading to a high peak-to-average power ratio of the aggregated signal and consequently signal distortion. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 A schematic flowchart of a method for generating a reference signal according to an embodiment of this application is shown;

[0019] Figure 2 A flowchart illustrating another method for generating a reference signal according to an embodiment of this application is shown.

[0020] Figure 3 A flowchart illustrating yet another method for generating a reference signal according to an embodiment of this application is shown;

[0021] Figure 4 A structural block diagram of a reference signal generation and transmission system according to an embodiment of this application is shown;

[0022] Figure 5 A comparison graph of the peak-to-average power ratio (PAPR) performance of a carrier aggregation system before and after optimization is shown in the embodiments of this application.

[0023] Figure 6 A structural block diagram of a reference signal generation apparatus provided according to an embodiment of this application is shown. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] As described in the background section, in existing multi-carrier aggregation, the reference signals of different base carriers are the same, resulting in a high peak-to-average power ratio of the aggregated signal, which in turn leads to signal distortion. To solve the above problem, embodiments of this application provide a method for generating a reference signal, a device for generating a reference signal, a computer-readable storage medium, and a system for generating a reference signal.

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] Figure 1 This is a flowchart of a method for generating a reference signal according to an embodiment of this application. Figure 1 As shown, the method includes the following steps:

[0030] Step S101: Obtain the base carrier index of the target base carrier of the reference signal to be generated. The base carrier index represents the first position number of the target base carrier in the aggregated bandwidth. The aggregated bandwidth includes multiple base carriers.

[0031] Specifically, in a communication system, the aggregated bandwidth consists of multiple base carriers, each with a relative position within the aggregated bandwidth. In this step, the system obtains the base carrier index corresponding to the target base carrier for which the reference signal needs to be generated. This index uniquely identifies the order of the target base carrier within the aggregated bandwidth, i.e., its first position number relative to the start of the aggregated bandwidth. For example, if the aggregated bandwidth contains five base carriers, numbered sequentially from the start as 0, 1, 2, 3, and 4, then the index of the target base carrier is its sequence number within that sequence.

[0032] Step S102: Determine the subcarrier index set of the target base carrier, wherein the subcarrier index set is a set of second position numbers of multiple subcarriers of the target base carrier within the target base carrier;

[0033] Specifically, each base carrier consists of several subcarriers, which are arranged sequentially within the base carrier. In this step, the second position number of all subcarriers contained in the target base carrier within its own carrier is determined, forming a subcarrier index set.

[0034] Step S103: Based on the above subcarrier index set, the above base carrier index, and the total number of subcarriers contained in the above target base carrier, determine the global sequence index corresponding to each subcarrier index. The global sequence index represents the position of the above subcarrier in a preset global reference sequence.

[0035] Specifically, based on the aforementioned subcarrier index set, the base carrier index of the target base carrier, and the total number of subcarriers contained in the base carrier, the corresponding position of each subcarrier in the global reference sequence is determined, i.e., the global sequence index. This global sequence index indicates from which position in the preset global reference sequence the pilot value corresponding to the subcarrier should be extracted.

[0036] Step S104: Determine the first pilot value of each of the global sequence indices according to the preset global reference sequence, and determine the reference signal of the target base carrier according to the multiple first pilot values. The first pilot value is a signal value used to determine the position of the reference signal on the subcarrier.

[0037] Specifically, based on a preset global reference sequence and the indices of each global sequence, the signal values ​​at each position are read sequentially to obtain the first pilot value corresponding to each subcarrier. Each first pilot value characterizes the signal strength and phase characteristics at its corresponding subcarrier position. Subsequently, multiple first pilot values ​​are bound to their corresponding subcarrier positions to form a reference signal structure for the target fundamental carrier in the frequency domain. This structure will serve as the basis for subsequent modulation and transmission. The aforementioned global reference sequence is a predefined periodic sequence, the length of which is sufficient to cover the total number of subcarriers required for all aggregated fundamental carriers. It is predefined by the communication protocol standard or generated by the system during initialization according to a preset algorithm.

[0038] Through the above embodiments, by obtaining the first position number of the target base carrier in the aggregation bandwidth and combining it with the second position number of each subcarrier within the target base carrier, the global sequence index corresponding to each subcarrier is determined. Then, based on a preset global reference sequence, the first pilot value corresponding to each subcarrier is determined, enabling different base carriers to obtain different pilot values ​​based on different global sequence indices and generate corresponding reference signals. This avoids the situation in existing multi-carrier aggregation where different base carriers use the same reference signal, reduces the consistency between reference signals of different base carriers, weakens the in-phase superposition effect during multi-carrier aggregation, thereby reducing the peak-to-average power ratio of the aggregated signal, reducing signal distortion, improving the rationality of reference signal generation and the reliability of communication transmission, and solving the problem in existing multi-carrier aggregation where the reference signals of different base carriers are the same, leading to a high peak-to-average power ratio of the aggregated signal and consequently signal distortion.

[0039] In one alternative approach, determining the global sequence index corresponding to each subcarrier index based on the aforementioned subcarrier index set, the aforementioned base carrier index, and the total number of subcarriers contained in the aforementioned target base carrier includes: determining the first product as the product of the aforementioned base carrier index and the aforementioned total number of subcarriers contained in the aforementioned target base carrier; and determining the global sequence index corresponding to each of the aforementioned subcarrier indices as the sum of each of the aforementioned subcarrier indices and the aforementioned first product.

[0040] In the above embodiments, a first product is obtained by multiplying the basic carrier index by the total number of subcarriers, and a global sequence index is obtained by adding each subcarrier index to the first product. This allows the subcarrier indices of different basic carriers to be mapped to non-overlapping continuous intervals in the global reference sequence, thereby assigning a unique and predictable index number to each subcarrier in the global sequence. This ensures that when the first pilot value is read according to the global sequence index, the sequence segments on which each basic carrier depends can be accurately distinguished based on their relative positions in the aggregated bandwidth.

[0041] In another alternative, after determining the first pilot value of each of the global sequence indices according to the preset global reference sequence, and determining the reference signal of the target base carrier according to the multiple first pilot values, the method further includes: obtaining the total number of subcarriers contained in the target base carrier; determining the center subcarrier index at the center position according to the total number of subcarriers; and setting the first pilot value of the subcarrier corresponding to the center subcarrier index to zero.

[0042] In the above embodiments, after determining the first pilot value corresponding to each subcarrier according to the global sequence index and forming the reference signal of the target base carrier, the total number of subcarriers of the base carrier is obtained, the index of the center subcarrier located at its center position is calculated, and the first pilot value corresponding to the index is set to zero, so that the frequency domain value corresponding to the center subcarrier position in the reference signal is explicitly set to zero, thereby artificially reserving a fixed position with no signal output in the frequency domain structure to meet the protocol's constraint requirement of disabling the center subcarrier.

[0043] In some exemplary embodiments, determining a first pilot value for each of the global sequence indices based on a preset global reference sequence, and determining a reference signal for the target base carrier based on a plurality of the first pilot values, includes: determining each of the subcarrier indices corresponding to each of the first pilot values; and determining the reference signal for the target base carrier based on each of the subcarrier indices and each of the first pilot values.

[0044] In the above embodiments, firstly, the system determines the local position number of the subcarrier corresponding to each index within the target base carrier based on the calculated global sequence indexes, i.e., the subcarrier index, thereby establishing a correspondence between the global sequence indexes and the local subcarrier positions. Subsequently, each subcarrier index is bound to its corresponding first pilot value extracted from the global reference sequence to form a set of ordered frequency domain data pairs. Then, the positions are filled in the frequency domain resource grid of the target base carrier based on this set of data pairs, and finally, a reference signal frequency domain representation that completely covers all effective subcarrier positions within the base carrier is constructed.

[0045] In other exemplary embodiments, determining the subcarrier index set of the target base carrier includes: obtaining the total number of subcarriers contained in the target base carrier; determining a center subcarrier index based on the total number of subcarriers, wherein the center subcarrier index is the index of the subcarrier located at the center of the target base carrier; determining a preliminary subcarrier index set of the target base carrier, wherein the preliminary subcarrier index set includes the indices of all the subcarriers of the target base carrier; and removing the center subcarrier index from the preliminary subcarrier index set to obtain the subcarrier index set.

[0046] In the above embodiments, by obtaining the total number of subcarriers contained in the target fundamental carrier, the index of the center subcarrier located at the center of the frequency domain structure of the fundamental carrier is calculated, and a preliminary subcarrier index set is constructed based on all subcarrier indices. Then, the center subcarrier index is removed from this preliminary set, resulting in a subcarrier index set excluding the center subcarrier. When determining the first pilot value based on this subcarrier index set, the system will not assign or modulate pilot values ​​for the center subcarrier position, ensuring that this position is explicitly excluded during the reference signal generation process and does not participate in the assignment of any pilot symbols.

[0047] In some exemplary embodiments of this application, after determining the reference signal of the target base carrier based on a plurality of the first pilot values, the method further includes: calculating the peak-to-average power ratio of the transmitted signal formed based on the reference signal; outputting the reference signal when the peak-to-average power ratio is lower than a preset peak-to-average power ratio; and correcting the reference signal when the peak-to-average power ratio is greater than or equal to the preset peak-to-average power ratio to obtain the corrected reference signal.

[0048] In the above embodiments, after generating a reference signal for the target fundamental carrier based on multiple first pilot values, the system further calculates the peak-to-average power ratio (PAPR) of the transmitted signal formed by the reference signal in the time domain and compares it with a preset threshold. If the calculated PAPR is lower than the preset threshold, the current reference signal is directly output as the final transmission signal. If the calculated PAPR is greater than or equal to the preset threshold, a correction mechanism for the current reference signal is triggered. By adjusting its pilot distribution or sequence mapping method, a new set of reference signals is generated until the PAPR of the corresponding transmitted signal meets the requirement of being lower than the preset threshold. This ensures that the peak-to-average power ratio of the transmitted signal generated by the final output reference signal is strictly controlled within the preset allowable range, preventing the subsequent power amplifier from operating in the nonlinear region or signal clipping from occurring due to PAPR exceeding the limit. The system achieves active constraint on the power fluctuation of the transmitted signal without increasing the signaling burden, changing the frame structure, or extending the scheduling delay. Since the reference signal is prone to instantaneous power spikes due to the superposition of isomorphic sequences in multi-carrier aggregation scenarios, this method can automatically intercept risk signals with substandard power characteristics by real-time calculation and threshold comparison, preventing them from entering the front end of the power amplifier, thereby preventing risks such as amplifier nonlinear distortion caused by instantaneous power exceeding the limit at the physical layer source.

[0049] Specifically, the aforementioned preset peak-to-average power ratio is a threshold value determined through laboratory testing or engineering simulation based on the linear operating range of the power amplifier (PA) used in the target communication system, the maximum allowable output power back-off capability, and the modulation format and bit error rate requirements supported by the system.

[0050] In some further exemplary embodiments of this application, the above-mentioned reference signal is modified to obtain the modified reference signal, including: offsetting each of the above-mentioned global sequence indices based on a preset target offset to obtain a plurality of modified global sequence indices; determining a second pilot value for each of the above-mentioned modified global sequence indices according to the above-mentioned global reference sequence; and determining the modified reference signal for the target base carrier according to the plurality of the above-mentioned second pilot values.

[0051] In the above embodiments, when the system determines that the peak-to-average power ratio (PAPR) of the original reference signal exceeds a preset threshold, a preset target offset is introduced to deterministically shift the global sequence indexes of all pilot mapping participants. This achieves structural reorganization of the reference signal's power distribution in the time domain without changing the sequence origin, increasing signaling overhead, or disrupting the frame structure. The essence of this correction lies in using adjacent segments in the global sequence that were not originally used by the current base carrier to replace the original mapping region, causing a redistribution of pilot energy in the frequency domain. This breaks the time-domain phase alignment trend caused by the original sequence truncation, fundamentally weakening the in-phase superposition effect during multi-carrier aggregation. Since this offset is a fixed value pre-configured by the system, its selection has been verified to effectively disperse signal energy peaks. Therefore, each correction can quickly and stably generate a set of low PAPR replacement signals. Furthermore, this process relies entirely on local computation, requiring no interaction with the base station scheduler or requesting new sequences, significantly improving the real-time performance and reliability of the correction. In addition, this mechanism optimizes power characteristics while ensuring that channel estimation performance is not affected, thus achieving autonomous closed-loop control of transmit power security without sacrificing communication quality.

[0052] To enable those skilled in the art to better understand the technical solution of this application, the implementation process of the reference signal generation method of this application will be described in detail below with reference to specific embodiments.

[0053] This embodiment relates to a specific method for generating a reference signal, such as... Figure 2 As shown, it includes the following steps:

[0054] Step S1: Obtain the base carrier index n of the current target base carrier. The base carrier index n is the offset number of the base carrier relative to the first base carrier in the aggregated bandwidth, and it is counted incrementally starting from zero.

[0055] Step S2: For each base carrier, define the set of subcarrier indices k, in the range k=0,1,2,…,(Nsc-1), excluding the center subcarrier k=((Nsc-1)) / 2.

[0056] Step S3: Calculate the first... Pilot value of the k-th subcarrier on an OFDM symbol (Orthogonal Frequency Division Multiplexing Symbol) .

[0057] ,in, For the first In each OFDM symbol, the relative subcarrier index is: Pilot modulation symbols at the location; This is a preset global reference sequence; k is an integer from 0 to Nsc-1 for the local subcarrier index within the basic carrier, excluding the index value at the center position. Nc is the offset of the current base carrier relative to the first base carrier in the entire aggregation bandwidth; Nsc is the total number of subcarriers contained in a single base carrier. In the above formula, the offset (nc) The Nsc method allows each fundamental carrier to extract a sequence of the required length from a different starting position in the global reference sequence, thereby ensuring low cross-correlation of reference signals on different fundamental carriers. Compared with existing technologies, this method, through a simple offset operation, ensures that different fundamental carriers use different reference signals, effectively reducing the signal PAPR during multi-carrier aggregation, improving the efficiency of the transmitter power amplifier, while being compatible with existing frame structures, simple to implement, and requiring no additional signaling overhead.

[0058] Embodiments of this application also provide a method for generating a reference signal, such as... Figure 3 As shown, it includes:

[0059] Step S201: System configuration and parameter acquisition;

[0060] Specifically, during the system initialization phase, the base station determines the current transmission bandwidth configuration. Assuming the total system bandwidth is aggregated from N basic carriers, for each scheduled basic carrier CC... i (where i = 0, 1, ..., N-1), determine its offset n = i.

[0061] Step S202: Construct a global frequency domain index mapping;

[0062] Specifically, in the original protocol, each base carrier independently extracts Nsc points starting from the beginning position (k=0) of sequence r. In this invention, we treat all aggregated base carriers as a continuous frequency domain resource block.

[0063] For CC0 (n=0): the sequence index range used is 0~(Nsc-1);

[0064] For CC1 (n=1): the range of sequence indices used is Nsc ~ 2 × Nsc - 1;

[0065] For CC n The range of sequence indices used is n×Nsc~(n+1)×Nsc-1;

[0066] Step S203: Perform sequence generation and mapping;

[0067] For each available subcarrier k (k≠((Nsc-1)) within each basic carrier 2):

[0068] Step S2031: Calculate the global sequence index Index: Index = k + n × Nsc;

[0069] Step S2032: From the base reference sequence r n,l Read the value at the corresponding index;

[0070] Step S2033: Map this value to the kth subcarrier of the current base carrier;

[0071] Step S2034: For the center subcarrier k=((Nsc-1)) 2. Force zeroing.

[0072] For example, Figure 4 A structural block diagram of a reference signal generation and transmission system according to an embodiment of the present invention is shown, including a reference signal generation module (G), a transmission unit (T), and frequency domain resource blocks (BANDs) for multiple basic carriers. The reference signal generation module extracts subsequences at different offset positions from the global reference sequence based on the carrier index of each basic carrier to generate pilot signals for each basic carrier. The transmission unit modulates the pilot signals of each basic carrier with data signals and transmits them in parallel. Multiple BANDs are arranged consecutively in the frequency domain, forming an aggregated bandwidth, and each BAND corresponds to a set of subcarriers occupied by one basic carrier. Assuming the system schedules 8 consecutive basic carriers (CC0~CC7), each basic carrier is allocated according to its index n... The initial offset n×Nsc of the reference signal sequence in the global reference sequence is calculated using the {0,1,…,7} formula. CC6 starts at index 6×Nsc, and CC7 starts at index 7×Nsc. In this way, the reference signals on the two scheduled base carriers CC6 and CC7 are taken from non-overlapping segments of the base reference sequence, avoiding in-phase superposition in the time domain and significantly improving PAPR performance.

[0073] Figure 5 This figure shows a comparison curve of the peak-to-average power ratio (PAPR) performance of the carrier aggregation system before and after optimization in this embodiment of the invention. The evaluation uses the complementary cumulative distribution function (CCDF) of PAPR. The horizontal axis represents the PAPR threshold in dB, which is the judgment threshold set by the ratio of the instantaneous peak power to the average power of the signal. The vertical axis represents the probability that the signal PAPR exceeds this threshold, i.e., the probability of PAPR > threshold occurring, using a logarithmic scale to highlight the statistical characteristics of high-power tail events. This curve shape is an internationally accepted standard method in the communications field for evaluating the risk of nonlinear distortion in power amplifiers. The curve obtained by this method is shifted to the left compared to the traditional method, indicating that under the same probability conditions, the reference signal generated by this invention can significantly reduce the peak power of the aggregated signal, effectively suppressing the probability of high PAPR events, thereby improving the linear operating range of the power amplifier and enhancing system energy efficiency and signal quality.

[0074] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0075] This application also provides a reference signal generation apparatus. It should be noted that the Z apparatus in this application can be used to execute the reference signal generation method provided in this application. This apparatus is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0076] The following describes the reference signal generation apparatus provided in the embodiments of this application.

[0077] Figure 6 This is a schematic diagram of a reference signal generation apparatus according to an embodiment of this application. Figure 6 As shown, the device includes:

[0078] The first acquisition unit 10 is used to acquire the base carrier index of the target base carrier of the reference signal to be generated. The base carrier index represents the first position number of the target base carrier in the aggregated bandwidth. The aggregated bandwidth includes multiple base carriers.

[0079] Specifically, in a communication system, the aggregated bandwidth consists of multiple base carriers, each with a relative position within the aggregated bandwidth. In this step, the system obtains the base carrier index corresponding to the target base carrier for which the reference signal needs to be generated. This index uniquely identifies the order of the target base carrier within the aggregated bandwidth, i.e., its first position number relative to the start of the aggregated bandwidth. For example, if the aggregated bandwidth contains five base carriers, numbered sequentially from the start as 0, 1, 2, 3, and 4, then the index of the target base carrier is its sequence number within that sequence.

[0080] The first determining unit 20 is used to determine the subcarrier index set of the target base carrier, wherein the subcarrier index set is a set of second position numbers of multiple subcarriers of the target base carrier within the target base carrier.

[0081] Specifically, each base carrier consists of several subcarriers, which are arranged sequentially within the base carrier. In this step, the second position number of all subcarriers contained in the target base carrier within its own carrier is determined, forming a subcarrier index set.

[0082] The second determining unit 30 is used to determine the global sequence index corresponding to each subcarrier index based on the subcarrier index set, the base carrier index, and the total number of subcarriers contained in the target base carrier. The global sequence index represents the position of the subcarrier in a preset global reference sequence.

[0083] Specifically, based on the aforementioned subcarrier index set, the base carrier index of the target base carrier, and the total number of subcarriers contained in the base carrier, the corresponding position of each subcarrier in the global reference sequence is determined, i.e., the global sequence index. This global sequence index indicates from which position in the preset global reference sequence the pilot value corresponding to the subcarrier should be extracted.

[0084] The second acquisition unit 40 is configured to determine the first pilot value of each of the global sequence indices according to the preset global reference sequence, and to determine the reference signal of the target base carrier according to the plurality of the first pilot values, wherein the first pilot value is a signal value used to determine the position of the reference signal on the subcarrier.

[0085] Specifically, based on a preset global reference sequence and the indices of each global sequence, the signal values ​​at each position are read sequentially to obtain the first pilot value corresponding to each subcarrier. Each first pilot value characterizes the signal strength and phase characteristics at its corresponding subcarrier position. Subsequently, multiple first pilot values ​​are bound to their corresponding subcarrier positions to form a reference signal structure for the target fundamental carrier in the frequency domain. This structure will serve as the basis for subsequent modulation and transmission. The aforementioned global reference sequence is a predefined periodic sequence, the length of which is sufficient to cover the total number of subcarriers required for all aggregated fundamental carriers. It is predefined by the communication protocol standard or generated by the system during initialization according to a preset algorithm.

[0086] As an optional scheme, the second determining unit includes: a first determining module, configured to determine that the first product is the product of the base carrier index and the total number of subcarriers included in the target base carrier; and a second determining module, configured to determine that the global sequence index corresponding to each of the subcarrier indices is the sum of each of the subcarrier indices and the first product.

[0087] In one alternative embodiment, the apparatus further includes: a third acquisition unit, configured to acquire the total number of subcarriers contained in the target base carrier; a third determination unit, configured to determine the center subcarrier index of the center position based on the total number of subcarriers; and a zeroing unit, configured to set the first pilot value of the subcarrier corresponding to the center subcarrier index to zero.

[0088] In another alternative embodiment, the second acquisition unit includes: a third determining module, configured to determine each of the subcarrier indices corresponding to each of the first pilot values; and a fourth determining module, configured to determine the reference signal of the target base carrier based on each of the subcarrier indices and each of the first pilot values.

[0089] In some exemplary embodiments, the first determining unit includes: an acquisition module, configured to acquire the total number of subcarriers included in the target base carrier; a fifth determining module, configured to determine a center subcarrier index based on the total number of subcarriers, wherein the center subcarrier index is the index of the subcarrier located at the center of the target base carrier; a sixth determining module, configured to determine a set of preliminary subcarrier indices for the target base carrier, wherein the set of preliminary subcarrier indices includes the indices of all the subcarriers of the target base carrier; and a removal module, configured to remove the center subcarrier index from the set of preliminary subcarrier indices to obtain the set of subcarrier indices.

[0090] In other exemplary embodiments, the apparatus further includes: a calculation unit for calculating the peak-to-average power ratio of the transmitted signal formed based on the reference signal; an output unit for outputting the reference signal when the peak-to-average power ratio is lower than a preset peak-to-average power ratio; and a correction unit for correcting the reference signal when the peak-to-average power ratio is greater than or equal to the preset peak-to-average power ratio, so as to obtain the corrected reference signal.

[0091] In some exemplary embodiments of this application, the correction unit includes: a processing module, configured to perform offset processing on each of the global sequence indices based on a preset target offset to obtain a plurality of corrected global sequence indices; a seventh determining module, configured to determine a second pilot value for each of the corrected global sequence indices based on the global reference sequence; and an eighth determining module, configured to determine the corrected reference signal of the target base carrier based on the plurality of the second pilot values.

[0092] The aforementioned reference signal generation device includes a processor and a memory. The first acquisition unit, the first determination unit, the second determination unit, and the second acquisition unit are all stored as program units in the memory. The processor executes these program units stored in the memory to implement their respective functions. All of the aforementioned modules are located in the same processor; alternatively, the modules may be located in different processors in any combination.

[0093] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and adjusting kernel parameters can at least address the problem in existing multi-carrier aggregation where different base carriers use the same reference signal, leading to a high peak-to-average power ratio (PAPR) of the aggregated signal and consequently signal distortion.

[0094] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0095] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the method for generating the reference signal.

[0096] Specifically, the methods for generating the reference signal include:

[0097] Step S101: Obtain the base carrier index of the target base carrier of the reference signal to be generated. The base carrier index represents the first position number of the target base carrier in the aggregated bandwidth. The aggregated bandwidth includes multiple base carriers.

[0098] Specifically, in a communication system, the aggregated bandwidth consists of multiple base carriers, each with a relative position within the aggregated bandwidth. In this step, the system obtains the base carrier index corresponding to the target base carrier for which the reference signal needs to be generated. This index uniquely identifies the order of the target base carrier within the aggregated bandwidth, i.e., its first position number relative to the start of the aggregated bandwidth. For example, if the aggregated bandwidth contains five base carriers, numbered sequentially from the start as 0, 1, 2, 3, and 4, then the index of the target base carrier is its sequence number within that sequence.

[0099] Step S102: Determine the subcarrier index set of the target base carrier, wherein the subcarrier index set is a set of second position numbers of multiple subcarriers of the target base carrier within the target base carrier;

[0100] Specifically, each base carrier consists of several subcarriers, which are arranged sequentially within the base carrier. In this step, the second position number of all subcarriers contained in the target base carrier within its own carrier is determined, forming a subcarrier index set.

[0101] Step S103: Based on the above subcarrier index set, the above base carrier index, and the total number of subcarriers contained in the above target base carrier, determine the global sequence index corresponding to each subcarrier index. The global sequence index represents the position of the above subcarrier in a preset global reference sequence.

[0102] Specifically, based on the aforementioned subcarrier index set, the base carrier index of the target base carrier, and the total number of subcarriers contained in the base carrier, the corresponding position of each subcarrier in the global reference sequence is determined, i.e., the global sequence index. This global sequence index indicates from which position in the preset global reference sequence the pilot value corresponding to the subcarrier should be extracted.

[0103] Step S104: Determine the first pilot value of each of the global sequence indices according to the preset global reference sequence, and determine the reference signal of the target base carrier according to the multiple first pilot values. The first pilot value is a signal value used to determine the position of the reference signal on the subcarrier.

[0104] Specifically, based on a preset global reference sequence and the indices of each global sequence, the signal values ​​at each position are read sequentially to obtain the first pilot value corresponding to each subcarrier. Each first pilot value characterizes the signal strength and phase characteristics at its corresponding subcarrier position. Subsequently, multiple first pilot values ​​are bound to their corresponding subcarrier positions to form a reference signal structure for the target fundamental carrier in the frequency domain. This structure will serve as the basis for subsequent modulation and transmission. The aforementioned global reference sequence is a predefined periodic sequence, the length of which is sufficient to cover the total number of subcarriers required for all aggregated fundamental carriers. It is predefined by the communication protocol standard or generated by the system during initialization according to a preset algorithm.

[0105] Optionally, based on the aforementioned subcarrier index set, the aforementioned base carrier index, and the total number of subcarriers contained in the aforementioned target base carrier, the global sequence index corresponding to each subcarrier index is determined, including: determining that the first product is the product of the aforementioned base carrier index and the aforementioned total number of subcarriers contained in the aforementioned target base carrier; and determining that the global sequence index corresponding to each of the aforementioned subcarrier indices is the sum of each of the aforementioned subcarrier indices and the aforementioned first product.

[0106] Optionally, after determining the first pilot value of each of the global sequence indices according to the preset global reference sequence, and determining the reference signal of the target base carrier according to the multiple first pilot values, the method further includes: obtaining the total number of subcarriers contained in the target base carrier; determining the center subcarrier index at the center position according to the total number of subcarriers; and setting the first pilot value of the subcarrier corresponding to the center subcarrier index to zero.

[0107] Optionally, determining the first pilot value of each of the global sequence indices according to the preset global reference sequence, and determining the reference signal of the target base carrier according to the plurality of the first pilot values, includes: determining each of the subcarrier indices corresponding to each of the first pilot values; and determining the reference signal of the target base carrier according to each of the subcarrier indices and each of the first pilot values.

[0108] Optionally, determining the subcarrier index set of the target base carrier includes: obtaining the total number of subcarriers contained in the target base carrier; determining a center subcarrier index based on the total number of subcarriers, wherein the center subcarrier index is the index of the subcarrier located at the center of the target base carrier; determining a preliminary subcarrier index set of the target base carrier, wherein the preliminary subcarrier index set includes the indices of all the subcarriers of the target base carrier; and removing the center subcarrier index from the preliminary subcarrier index set to obtain the subcarrier index set.

[0109] Optionally, after determining the reference signal of the target base carrier based on the plurality of first pilot values, the method further includes: calculating the peak-to-average power ratio of the transmitted signal formed based on the reference signal; outputting the reference signal when the peak-to-average power ratio is lower than a preset peak-to-average power ratio; and correcting the reference signal when the peak-to-average power ratio is greater than or equal to the preset peak-to-average power ratio to obtain the corrected reference signal.

[0110] Optionally, the reference signal is modified to obtain the modified reference signal, including: offsetting each of the global sequence indices based on a preset target offset to obtain a plurality of modified global sequence indices; determining a second pilot value for each of the modified global sequence indices based on the global reference sequence; and determining the modified reference signal for the target base carrier based on the plurality of the second pilot values.

[0111] This invention provides a reference signal generation system, including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps: Step S101, obtaining the base carrier index of the target base carrier of the reference signal to be generated, wherein the base carrier index represents the first position number of the target base carrier in the aggregated bandwidth, and the aggregated bandwidth includes a plurality of the base carriers.

[0112] Specifically, in a communication system, the aggregated bandwidth consists of multiple base carriers, each with a relative position within the aggregated bandwidth. In this step, the system obtains the base carrier index corresponding to the target base carrier for which the reference signal needs to be generated. This index uniquely identifies the order of the target base carrier within the aggregated bandwidth, i.e., its first position number relative to the start of the aggregated bandwidth. For example, if the aggregated bandwidth contains five base carriers, numbered sequentially from the start as 0, 1, 2, 3, and 4, then the index of the target base carrier is its sequence number within that sequence.

[0113] Step S102: Determine the subcarrier index set of the target base carrier, wherein the subcarrier index set is a set of second position numbers of multiple subcarriers of the target base carrier within the target base carrier;

[0114] Specifically, each base carrier consists of several subcarriers, which are arranged sequentially within the base carrier. In this step, the second position number of all subcarriers contained in the target base carrier within its own carrier is determined, forming a subcarrier index set.

[0115] Step S103: Based on the above subcarrier index set, the above base carrier index, and the total number of subcarriers contained in the above target base carrier, determine the global sequence index corresponding to each subcarrier index. The global sequence index represents the position of the above subcarrier in a preset global reference sequence.

[0116] Specifically, based on the aforementioned subcarrier index set, the base carrier index of the target base carrier, and the total number of subcarriers contained in the base carrier, the corresponding position of each subcarrier in the global reference sequence is determined, i.e., the global sequence index. This global sequence index indicates from which position in the preset global reference sequence the pilot value corresponding to the subcarrier should be extracted.

[0117] Step S104: Determine the first pilot value of each of the global sequence indices according to the preset global reference sequence, and determine the reference signal of the target base carrier according to the multiple first pilot values. The first pilot value is a signal value used to determine the position of the reference signal on the subcarrier.

[0118] Specifically, based on a preset global reference sequence and the indices of each global sequence, the signal values ​​at each position are read sequentially to obtain the first pilot value corresponding to each subcarrier. Each first pilot value characterizes the signal strength and phase characteristics at its corresponding subcarrier position. Subsequently, multiple first pilot values ​​are bound to their corresponding subcarrier positions to form a reference signal structure for the target fundamental carrier in the frequency domain. This structure will serve as the basis for subsequent modulation and transmission. The aforementioned global reference sequence is a predefined periodic sequence, the length of which is sufficient to cover the total number of subcarriers required for all aggregated fundamental carriers. It is predefined by the communication protocol standard or generated by the system during initialization according to a preset algorithm.

[0119] Optionally, based on the aforementioned subcarrier index set, the aforementioned base carrier index, and the total number of subcarriers contained in the aforementioned target base carrier, the global sequence index corresponding to each subcarrier index is determined, including: determining that the first product is the product of the aforementioned base carrier index and the aforementioned total number of subcarriers contained in the aforementioned target base carrier; and determining that the global sequence index corresponding to each of the aforementioned subcarrier indices is the sum of each of the aforementioned subcarrier indices and the aforementioned first product.

[0120] Optionally, after determining the first pilot value of each of the global sequence indices according to the preset global reference sequence, and determining the reference signal of the target base carrier according to the multiple first pilot values, the method further includes: obtaining the total number of subcarriers contained in the target base carrier; determining the center subcarrier index at the center position according to the total number of subcarriers; and setting the first pilot value of the subcarrier corresponding to the center subcarrier index to zero.

[0121] Optionally, determining the first pilot value of each of the global sequence indices according to the preset global reference sequence, and determining the reference signal of the target base carrier according to the plurality of the first pilot values, includes: determining each of the subcarrier indices corresponding to each of the first pilot values; and determining the reference signal of the target base carrier according to each of the subcarrier indices and each of the first pilot values.

[0122] Optionally, determining the subcarrier index set of the target base carrier includes: obtaining the total number of subcarriers contained in the target base carrier; determining a center subcarrier index based on the total number of subcarriers, wherein the center subcarrier index is the index of the subcarrier located at the center of the target base carrier; determining a preliminary subcarrier index set of the target base carrier, wherein the preliminary subcarrier index set includes the indices of all the subcarriers of the target base carrier; and removing the center subcarrier index from the preliminary subcarrier index set to obtain the subcarrier index set.

[0123] Optionally, after determining the reference signal of the target base carrier based on the plurality of first pilot values, the method further includes: calculating the peak-to-average power ratio of the transmitted signal formed based on the reference signal; outputting the reference signal when the peak-to-average power ratio is lower than a preset peak-to-average power ratio; and correcting the reference signal when the peak-to-average power ratio is greater than or equal to the preset peak-to-average power ratio to obtain the corrected reference signal.

[0124] Optionally, the reference signal is modified to obtain the modified reference signal, including: offsetting each of the global sequence indices based on a preset target offset to obtain a plurality of modified global sequence indices; determining a second pilot value for each of the modified global sequence indices based on the global reference sequence; and determining the modified reference signal for the target base carrier based on the plurality of the second pilot values.

[0125] The devices mentioned in this article can be servers, PCs, tablets, mobile phones, etc.

[0126] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0127] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0128] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0129] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0130] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0131] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0132] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0133] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0134] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0135] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0136] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0137] The reference signal generation method of this application obtains the first position number of the target base carrier in the aggregation bandwidth and combines it with the second position number of each subcarrier within the target base carrier to determine the global sequence index corresponding to each subcarrier. Then, based on a preset global reference sequence, it determines the first pilot value corresponding to each subcarrier, enabling different base carriers to obtain different pilot values ​​based on different global sequence indices and generate corresponding reference signals. This avoids the situation in existing multi-carrier aggregation where different base carriers use the same reference signal, reduces the consistency between reference signals of different base carriers, weakens the in-phase superposition effect during multi-carrier aggregation, thereby reducing the peak-to-average power ratio of the aggregated signal, reducing signal distortion, improving the rationality of reference signal generation and the reliability of communication transmission. It solves the problem in existing multi-carrier aggregation where the same reference signal for different base carriers leads to a high peak-to-average power ratio of the aggregated signal, resulting in signal distortion.

[0138] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for generating a reference signal, characterized in that, include: Obtain the base carrier index of the target base carrier of the reference signal to be generated. The base carrier index represents the first position number of the target base carrier in the aggregated bandwidth. The aggregated bandwidth includes multiple base carriers. Determine the subcarrier index set of the target base carrier, wherein the subcarrier index set is a set of second position numbers of multiple subcarriers of the target base carrier within the target base carrier; Based on the subcarrier index set, the base carrier index, and the total number of subcarriers contained in the target base carrier, a global sequence index corresponding to each subcarrier index is determined, wherein the global sequence index represents the position of the subcarrier in a preset global reference sequence; The first pilot value of each global sequence index is determined according to the preset global reference sequence, and the reference signal of the target base carrier is determined according to the plurality of first pilot values. The first pilot value is a signal value used to determine the position of the reference signal on the subcarrier.

2. The generation method according to claim 1, characterized in that, Based on the subcarrier index set, the base carrier index, and the total number of subcarriers contained in the target base carrier, the global sequence index corresponding to each subcarrier index is determined, including: The first product is determined to be the product of the base carrier index and the total number of subcarriers contained in the target base carrier; The global sequence index corresponding to each of the subcarrier indices is determined to be the sum of the product of each of the subcarrier indices and the first product.

3. The generation method according to claim 1, characterized in that, After determining the first pilot value of each global sequence index according to the preset global reference sequence, and determining the reference signal of the target base carrier according to the plurality of first pilot values, the method further includes: Obtain the total number of subcarriers contained in the target base carrier; The center subcarrier index of the center position is determined based on the total number of subcarriers; Set the first pilot value of the subcarrier corresponding to the central subcarrier index to zero.

4. The generation method according to claim 1, characterized in that, Determine the first pilot value of each global sequence index according to the preset global reference sequence, and determine the reference signal of the target base carrier according to the plurality of first pilot values, including: Determine the subcarrier index corresponding to each of the first pilot values; The reference signal of the target base carrier is determined based on each of the subcarrier indices and each of the first pilot values.

5. The generation method according to claim 1, characterized in that, Determining the subcarrier index set of the target base carrier includes: Obtain the total number of subcarriers contained in the target base carrier; The center subcarrier index is determined based on the total number of subcarriers, and the center subcarrier index is the index of the subcarrier at the center position of the target base carrier; Determine a set of preliminary subcarrier indices for the target base carrier, the set of preliminary subcarrier indices including the indices of all the subcarriers of the target base carrier; Remove the center subcarrier index from the prepared subcarrier index set to obtain the subcarrier index set.

6. The generation method according to claim 1, characterized in that, After determining the reference signal of the target fundamental carrier based on a plurality of first pilot values, the method further includes: Calculate the peak-to-average power ratio of the transmitted signal formed based on the reference signal; If the peak-to-average power ratio is lower than the preset peak-to-average power ratio, the reference signal is output. If the peak-to-average power ratio is greater than or equal to the preset peak-to-average power ratio, the reference signal is corrected to obtain the corrected reference signal.

7. The generation method according to claim 6, characterized in that, Correcting the reference signal to obtain the corrected reference signal includes: Based on a preset target offset, each of the global sequence indices is offset to obtain multiple corrected global sequence indices; The second pilot value of each of the modified global sequence indices is determined based on the global reference sequence; The corrected reference signal for the target base carrier is determined based on a plurality of the second pilot values.

8. A reference signal generation apparatus, characterized in that, include: The first acquisition unit is used to acquire the base carrier index of the target base carrier of the reference signal to be generated, wherein the base carrier index represents the first position number of the target base carrier in the aggregated bandwidth, and the aggregated bandwidth includes a plurality of the base carriers. The first determining unit is configured to determine the subcarrier index set of the target base carrier, wherein the subcarrier index set is a set of second position numbers of multiple subcarriers of the target base carrier within the target base carrier; The second determining unit is used to determine the global sequence index corresponding to each subcarrier index based on the subcarrier index set, the base carrier index, and the total number of subcarriers contained in the target base carrier. The global sequence index represents the position of the subcarrier in a preset global reference sequence. The second acquisition unit is configured to determine a first pilot value for each global sequence index according to a preset global reference sequence, and to determine the reference signal of the target base carrier according to a plurality of first pilot values, wherein the first pilot value is a signal value used to determine the reference signal at the position of the subcarrier.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform the method according to any one of claims 1 to 7.

10. A reference signal generation system, characterized in that, include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising methods for performing any one of claims 1 to 7.

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