Bandwidth self-adaptive frequency hopping waveform communication method and device based on wide-narrow band fusion

Abstract

The invention relates to a bandwidth adaptive frequency hopping waveform communication method and device based on wide-narrow band fusion, and relates to the technical field of wireless communication. The method comprises the following steps: a sending end divides a frequency hopping waveform into a narrow band segment and a wide band segment in a time domain, the narrow band segment comprises an FSK narrow band waveform, the wide band segment comprises the FSK narrow band waveform and an OFDM wide band waveform, and the OFDM wide band waveform dynamically reserves a subcarrier position as a sending frequency point of the FSK narrow band waveform according to a frequency hopping parameter to obtain a wide-narrow band fusion frame structure; generating width-narrow fusion waveform configuration parameters; modulating the wide-narrow band fusion frame structure according to the wide-narrow band fusion waveform configuration parameters to obtain a wide-narrow band fusion frequency hopping waveform; and a receiving end synchronizes parameter configuration of the receiver and the transmitter, and then demodulates and decodes the received wide-narrow band fusion frequency hopping waveform to obtain corresponding narrow-band service data and broadband service data. According to the invention, wide and narrow bands are fused, and data transmission reliability is improved.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a bandwidth adaptive frequency hopping waveform communication method and apparatus based on wide and narrowband fusion. Background Technology

[0002] With the development of the Internet of Things (IoT) and 5G / 6G communication technologies, communication systems face diverse demands. Against the backdrop of the rapid evolution of 5G / 6G and IoT, communication scenarios present a dual requirement of "high speed + high reliability": high-definition visual quality inspection in factories requires short-term throughput of several gigabytes of video, while AGV control signaling requires 99.99% achievable speed; when emergency drones transmit 4K images, flight control commands must penetrate obstructions and remain online.

[0003] Current mainstream communication technologies fall into two main branches: broadband and narrowband. Broadband communication provides high data rates over short distances, making it suitable for scenarios such as high-definition video transmission and large file downloads; however, it is sensitive to channel conditions and susceptible to interference. Problems with some frequency points can render the entire broadband frequency unusable. Figure 1 As shown, due to the effects of multipath transmission, deep fading occurs in the frequency domain at the circled area, leading to signal interpretation errors at the fading point. When the signal is transmitted across the entire frequency domain, this fading will render the entire frequency domain signal unusable. Narrowband communication offers wide coverage, strong anti-interference capabilities, and high reliability, making it suitable for critical services such as control commands and sensor data, but it suffers from low data rates.

[0004] Traditional solutions typically design broadband and narrowband communication separately, using different frequency bands, protocol stacks, or hardware devices. This results in low resource utilization, high system complexity, and large switching delays, making it difficult to meet the requirements of the same device to achieve high-speed and high-reliability communication simultaneously in complex environments. Summary of the Invention

[0005] Therefore, it is necessary to provide a bandwidth adaptive frequency hopping waveform communication method and apparatus based on wideband and narrowband fusion, which can integrate wideband and narrowband waveforms to improve communication efficiency and reliability, in order to address the above-mentioned technical problems.

[0006] A bandwidth-adaptive frequency-hopping waveform communication method based on wideband and narrowband fusion, the method comprising: The transmitting end divides the frequency hopping waveform into a narrowband segment and a wideband segment in the time domain. The narrowband segment includes the FSK narrowband waveform; the wideband segment includes the FSK narrowband waveform and the OFDM wideband waveform. The OFDM wideband waveform dynamically reserves subcarrier positions as the transmission frequency points of the FSK narrowband waveform according to the frequency hopping parameters, thus obtaining a wideband and narrowband fused frame structure. Based on service requirement parameters, channel status parameters, and communication link parameters, generate wide and narrow fusion waveform configuration parameters; Based on the wide-narrow fusion waveform configuration parameters, the wide-narrow fusion frame structure is modulated to obtain a wide-narrow fusion frequency hopping waveform; then the wide-narrow fusion frequency hopping waveform is sent to the receiving end. The receiving end synchronizes the parameter configuration of the receiver and transmitter according to the waveform signaling information of the narrowband segment. Then, based on the wide and narrowband fused frequency hopping waveform, it demodulates and decodes the FSK narrowband waveform of the narrowband segment, the FSK narrowband waveform of the wideband segment, and the OFDM wideband waveform respectively to obtain the corresponding narrowband service data and wideband service data.

[0007] On the other hand, a bandwidth adaptive frequency hopping waveform communication device based on wide and narrow band fusion is also provided, comprising: A wide-narrow band fusion frame structure construction module is used to divide the frequency hopping waveform into a narrow band segment and a wide band segment in the time domain. The narrow band segment includes an FSK narrow band waveform; the wide band segment includes an FSK narrow band waveform and an OFDM wide band waveform, and the OFDM wide band waveform dynamically reserves subcarrier positions as the transmission frequency points of the FSK narrow band waveform according to the frequency hopping parameters, thereby obtaining a wide-narrow band fusion frame structure. The fused waveform configuration parameter generation module is used to generate wide and narrow fused waveform configuration parameters based on service requirement parameters, channel status parameters, and communication link parameters. The wide-narrow band fusion frequency hopping waveform generation module is used to modulate the wide-narrow band fusion frame structure according to the wide-narrow band fusion waveform configuration parameters to obtain the wide-narrow band fusion frequency hopping waveform; and then send the wide-narrow band fusion frequency hopping waveform to the receiving end; The demodulation and decoding module is used by the receiving end to synchronize the parameter configuration of the receiver and the transmitter according to the waveform signaling information of the narrowband segment, and then demodulate and decode the FSK narrowband waveform of the narrowband segment, the FSK narrowband waveform of the wideband segment, and the OFDM wideband waveform based on the wideband-narrowband fused frequency hopping waveform to obtain the corresponding narrowband service data and wideband service data.

[0008] Compared with existing technologies, the bandwidth adaptive frequency hopping waveform communication method and apparatus based on wide and narrow band fusion provided by this invention have the following advantages: 1. By segmenting in the time domain and dynamically reserving subcarriers in the frequency domain, FSK narrowband waveforms and OFDM broadband waveforms are transmitted collaboratively on the same physical layer and the same radio frequency link, realizing the fusion of narrowband and broadband, reducing the complexity of terminal hardware, and lowering the size, cost and power consumption of the equipment.

[0009] 2. Broadband OFDM waveforms ensure high-throughput transmission over short distances; broadband FSK narrowband waveforms transmit critical services such as control commands, while narrowband FSK narrowband waveforms ensure signal synchronization and parameter transmission. The combination of these two technologies balances high throughput and high reliability, meeting the dual requirements of high-speed services and critical control, and adapting to diverse service needs in complex scenarios.

[0010] 3. OFDM broadband waveforms dynamically reserve subcarrier positions based on frequency hopping parameters, rather than fixedly allocating spectrum resources. This allows broadband and narrowband waveforms to share the same carrier resources, avoiding resource idleness caused by independent spectrum allocation, improving spectrum utilization and reducing resource waste. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention, and those skilled in the art can obtain other related drawings based on these drawings without creative effort.

[0012] Figure 1 A schematic diagram of deep frequency domain fading caused by multipath propagation provided in Example 1; Figure 2 This is a flowchart illustrating the bandwidth adaptive frequency hopping waveform communication method based on wide and narrow band fusion provided in Example 1. Figure 3 This is a schematic diagram of the wideband and narrowband fusion frame structure provided in Example 1; Figure 4 A schematic diagram of the reserved subcarrier positions provided in Example 1; Figure 5 A schematic diagram of the dynamic adaptive narrowband position and power provided in Example 1 Figure 6 This is a schematic diagram of cross-layer transmission provided in Example 1; Figure 7 This is a structural block diagram of the bandwidth adaptive frequency hopping waveform communication device based on wide and narrow band fusion provided in Example 2.

[0013] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0015] It should be noted that the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0016] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0017] Example 1 like Figure 2 As shown, the bandwidth adaptive frequency hopping waveform communication method based on wide and narrow band fusion provided in this embodiment includes the following steps: Step 201: The transmitting end divides the frequency hopping waveform into a narrowband segment and a wideband segment in the time domain. The narrowband segment includes the FSK narrowband waveform; the wideband segment includes the FSK narrowband waveform and the OFDM wideband waveform. The OFDM wideband waveform dynamically reserves subcarrier positions as the transmission frequency points of the FSK narrowband waveform according to the frequency hopping parameters, thus obtaining the wideband and narrowband fused frame structure.

[0018] Step 202: Generate wide and narrow fusion waveform configuration parameters based on service requirement parameters, channel status parameters, and communication link parameters.

[0019] Step 203: Modulate the wide and narrow band fusion frame structure according to the wide and narrow band fusion waveform configuration parameters to obtain the wide and narrow band fusion frequency hopping waveform; then send the wide and narrow band fusion frequency hopping waveform to the receiving end.

[0020] Step 204: The receiving end synchronizes the parameter configuration of the receiver and transmitter according to the waveform signaling information of the narrowband segment. Then, based on the wide and narrowband fused frequency hopping waveform, it demodulates and decodes the FSK narrowband waveform of the narrowband segment, the FSK narrowband waveform of the wideband segment, and the OFDM wideband waveform respectively to obtain the corresponding narrowband service data and wideband service data.

[0021] In the specific implementation of step 201, the transmitting end divides the frequency-hopping waveform into two parts in the time domain: a narrowband segment and a wideband segment. The wideband segment uses orthogonal frequency division multiplexing modulation with a larger subcarrier spacing, and is used for high-speed data transmission. The narrowband segment is formed by embedding a narrowband subcarrier cluster into the OFDM symbol, with a smaller subcarrier spacing and a power increase of 3~6dB, and is used for transmitting critical control information or high-reliability data.

[0022] The narrowband segment contains only FSK narrowband waveforms, which are configured into small segments based on system length parameters to form frequency-hopping waveforms. The wideband segment contains both FSK narrowband and OFDM wideband waveforms. The OFDM wideband waveforms require a fixed number of subcarrier positions to be dynamically reserved based on frequency-hopping parameters. These reserved subcarrier positions will serve as the transmission frequencies for the FSK narrowband waveforms, ultimately forming a waveform like... Figure 3 The diagram shows the wideband and narrowband fusion frame structure. Frequency hopping parameters include the frequency hopping frequency set, frequency hopping rate, and frequency hopping sequence.

[0023] OFDM broadband waveforms are broadband signals using orthogonal frequency division multiplexing modulation. They achieve high-speed data throughput through parallel transmission of multiple subcarriers and are suitable for high-capacity service transmission. FSK narrowband waveforms are narrowband signals using frequency shift keying modulation. They have the characteristics of high sensitivity and strong anti-interference ability and are suitable for low-speed, high-reliability signal transmission.

[0024] In the broadband band, the OFDM broadband waveform dynamically reserves subcarrier positions based on frequency hopping parameters, using these positions as the transmission frequencies for the FSK narrowband waveform. Specifically, for example... Figure 4 As shown, firstly, according to the bandwidth specifications of the broadband signal and the total number of subcarriers, the frequency domain is divided into n resource blocks and numbered sequentially from 1 to n, providing structured frequency domain resource units for precise subcarrier reservation. The frequency hopping map is used to correspond to pseudo-random numbers k between 1 and n in different time slots, with each time slot having a different k value. Through the one-to-one correspondence between k values ​​and resource block numbers, the frequency hopping of the FSK narrowband waveform transmission point between different resource blocks (i.e., different subcarrier groups) is achieved, thus completing the frequency hopping transmission of the narrowband waveform. Simultaneously, considering interference in actual communication environments, the k value can remain fixed throughout the transmission process to adapt to communication requirements under complex interference scenarios.

[0025] Furthermore, in the broadband segment, the subcarrier spacing of the OFDM broadband waveform is greater than that of the FSK waveform in the narrowband segment. To avoid mutual interference between the broadband and narrowband waveforms, a frequency domain guard band is set between the reserved subcarrier positions and other subcarriers of the OFDM broadband waveform. In addition, in the broadband-narrowband fusion frame structure, the narrowband FSK waveform serves as the entry point for time-domain and parameter synchronization of the entire waveform in the time domain. In the frequency domain, the frequency points of the narrowband waveform are not fixedly divided, but rather dynamically allocated to the narrowband frequency-hopping waveform based on the frequency hopping rules and channel fading conditions, specifically as follows: Figure 5 As shown.

[0026] This step achieves coordinated transmission of wide and narrowband waveforms on the same physical layer and RF link by constructing a wide and narrowband fused frame structure. This avoids the increased hardware complexity caused by traditional separate designs. At the same time, by dynamically reserving subcarriers instead of fixedly allocating the spectrum, wide and narrow bands share carrier resources, reducing spectrum idleness and improving resource utilization. The setting of frequency domain guard bands further ensures their respective transmission performance and avoids mutual interference.

[0027] In the specific implementation of step 202, wide and narrow fusion waveform configuration parameters are generated based on service requirement parameters, channel state parameters, and communication link parameters. Specifically, firstly, the communication link parameters, as underlying constraints, must first determine the maximum modulation and coding level that the current channel can carry. Core indicators such as signal transmission loss and interference are obtained through link quality detection, and based on this, the upper limit of the modulation method and a reasonable range for coding efficiency are defined.

[0028] Based on this, core configurations are matched according to business requirement parameters. For the actual data volume of upper-layer services, within the range allowed by communication link parameters, an appropriate modulation and coding scheme and coding efficiency are selected. If the service data volume is large and real-time requirements are high, and the channel signal-to-noise ratio is good, then high-order modulation schemes such as 64QAM and high coding efficiencies such as 3 / 4 are preferred to improve the data transmission capability per unit time domain. If the service data volume is small but reliability requirements are high, or the channel signal-to-noise ratio is low, then low-order modulation schemes such as BPSK and QPSK and low coding efficiencies such as 1 / 4 and 1 / 3 are selected. Redundant coding ensures the accuracy of data transmission, achieving a balance between business requirements and link capacity.

[0029] Finally, channel state parameters are introduced to complete the power optimization configuration of the narrowband waveform. Multipath fading in each resource block is obtained through frequency domain amplitude detection (i.e.,...). Figure 5 (The undulation characteristics of the black curve in the image) The transmit power of the FSK narrowband transmission frequency reserved for the OFDM wideband waveform is dynamically adjusted. Specifically, for resource blocks with low frequency domain amplitude and severe fading, the transmit power of the narrowband waveform is increased to compensate for signal loss; for resource blocks with high frequency domain amplitude and good transmission conditions, the power is appropriately reduced to decrease system energy consumption and co-channel interference, ensuring that the narrowband waveform maintains stable reception quality throughout the frequency hopping process.

[0030] Finally, by integrating the adaptation results of the above three layers of parameters, a complete set of configuration parameters is formed, which includes wide and narrow band waveform modulation and coding methods, coding efficiency, narrow band waveform frequency hopping resource blocks and corresponding power levels. This not only meets the needs of upper-layer services, but also adapts to the actual transmission conditions of the current channel and link.

[0031] The specific configuration parameters for the narrowband-wideband converged waveform include narrowband frequency hopping parameters, bandwidth parameters, modulation and coding parameters, and symbol length parameters. Service requirement parameters cover service priority, service type, rate requirements, and reliability requirements; channel state parameters include channel interference intensity, signal-to-noise ratio (SNR), multipath fading, Doppler shift, and channel quality indicator (CQI); communication link parameters involve communication distance estimation, link stability, and transmission delay requirements; and modulation and coding parameters are the modulation scheme and coding rate configured separately for narrowband and wideband.

[0032] Meanwhile, distance estimation in the communication link parameters also affects bandwidth configuration. For short distances, a larger broadband bandwidth is configured, while for long distances, a narrowband configuration is emphasized. This parameter generation method ensures that the configuration parameters are deeply adapted to service requirements, channel, and link status, guaranteeing that waveform transmission accurately matches the actual application scenario. This provides a precise basis for subsequent waveform modulation, ensuring the transmission performance of the broadband-narrowband fused waveform and balancing high throughput and high reliability.

[0033] In the specific implementation of step 203, the wide and narrow band fusion frame structure is modulated according to the wide and narrow band fusion waveform configuration parameters generated in step 202, thereby generating a wide and narrow band fusion frequency hopping waveform, and then the waveform is sent to the receiving end.

[0034] Simultaneously, channel state parameters and communication link parameters are monitored in real time throughout the process, such as channel interference intensity, signal-to-noise ratio (SNR), distance, multipath fading, and Doppler shift. Based on the monitoring results, waveform modes are switched or the configuration parameters of the wide-narrowband fusion waveform are modified. The waveform modes include pure narrowband mode, wide-narrowband fusion mode, and pure wideband mode, with switching primarily achieved by setting thresholds. For example, when the channel state parameters meet the condition that the SNR is greater than a preset SNR threshold, pure wideband mode is prioritized to improve throughput; conversely, when the SNR is less than or equal to the preset SNR threshold, pure narrowband mode is switched to ensure communication continuity.

[0035] During modulation, the narrowband FSK waveform is modulated based on hopping code spread spectrum (CSS) and polar coding. Hopping code spread spectrum uses pseudo-random codes to spread the narrowband signal, improving its resistance to narrowband interference. Polar coding, as a channel coding method, has coding performance close to the Shannon limit, further improving the reliability of signal transmission. The wideband OFDM waveform uses a hybrid OFDM and FSK modulation method, retaining the high-speed advantage of OFDM's multi-subcarrier parallel transmission while combining the anti-interference characteristics of FSK. Furthermore, windowing and clipping are used to further suppress out-of-band interference, reducing its impact on other signals.

[0036] Furthermore, a time-frequency dual-dimensional multiplexing mechanism is employed, dividing the waveform into narrowband synchronization and signaling, narrowband control transmission waveforms, and broadband service transmission waveforms in both the time and frequency domains, each corresponding to different service types. Simultaneously, resources are dynamically allocated based on service priority, coupled with cross-layer routing protocols, allowing narrowband links to dedicatedly transmit routing signaling while broadband links focus on load service data. This clearly defined transmission method reduces overall network overhead by 30% and improves routing robustness. The cross-layer transmission logic is as follows: Figure 7 As shown.

[0037] Specifically, the time-frequency dual-dimensional multiplexing mechanism includes multiplexing in both the time and frequency domains. From the time domain perspective, the broadband-narrowband fusion frame structure can flexibly carry either narrowband or broadband waveforms at different times, rather than being a fixed single waveform type. During the same communication process, narrowband waveforms are transmitted at some times, and broadband waveforms are transmitted at others. Through alternating or coexisting arrangements in the time domain, broadband-narrowband fusion transmission at different times is achieved, adapting to the timing requirements of diverse services.

[0038] From a frequency domain perspective, the focus is on broadband waveform design. Within the same broadband frequency band, it includes both the main transmission portion of the OFDM broadband waveform and the transmission area of ​​the FSK narrowband waveform. Broadband and narrowband waveforms share the same broadband frequency band resources and do not independently occupy different spectrums. By simultaneously carrying two waveforms within the broadband band, broadband and narrowband fusion within the same frequency domain is achieved.

[0039] The time-frequency dual-dimensional multiplexing mechanism achieves a transmission effect where wide and narrow bands can be flexibly integrated at different time and frequency points through a dual design of splitting wide and narrow bands at different times in the time domain and carrying the same wide and narrow bands in the same broadband segment in the frequency domain. This balances the timing adaptation of services with the efficient utilization of spectrum resources.

[0040] This modulation and transmission method enhances the anti-interference capability of narrowband waveforms and the anti-out-of-band interference capability of broadband waveforms through targeted modulation techniques, ensuring the transmission quality of fused waveforms. The real-time dynamic adjustment mechanism also enables the waveform to adapt to the dynamic changes of the channel and link, avoiding communication interruption or performance degradation due to environmental changes. The time-frequency dual-dimensional multiplexing mechanism achieves precise matching between services and waveforms, improving transmission efficiency.

[0041] In the specific implementation of step 204, the receiving end first synchronizes the parameter configurations of the receiver and transmitter based on the narrowband waveform signaling information. This narrowband waveform signaling information includes key parameters such as narrowband frequency hopping parameters, waveform bandwidth, effective subcarrier position, modulation and coding parameters, transmission symbol length, channel precoding information, and checksum information. The adaptive receiver has the capability to adaptively adjust parameters and can dynamically match the transmitter configuration according to the received waveform signaling information, supporting unified demodulation of wideband and narrowband fused waveforms.

[0042] After parameter synchronization is completed, the receiving end will demodulate and decode the FSK narrowband waveform (narrowband segment), FSK narrowband waveform (wideband segment), and OFDM wideband waveform (wideband segment) based on the received wideband and narrowband fused frequency hopping waveforms. During demodulation and decoding, corresponding processing methods will be used for different waveforms: FSK narrowband waveforms will undergo hopping code spreading and despreading, and polar code decoding; OFDM wideband waveforms will undergo OFDM demodulation and corresponding encoding and decoding, ultimately obtaining the corresponding narrowband and wideband service data. The narrowband service data mainly comes from the FSK narrowband waveforms of both the narrowband and wideband segments, including key service data such as control commands and sensor data; the wideband service data comes from the OFDM wideband waveforms of the wideband segment, including high-speed service data such as high-definition video, voice, and large files.

[0043] Using narrowband waveforms as the synchronization input fully leverages their high sensitivity to ensure that the receiver can quickly and accurately complete parameter synchronization, guaranteeing a high demodulation success rate. The waveform-based demodulation and decoding method precisely matches the transmission characteristics of different waveforms, ensuring high-reliability reception of narrowband services and high-speed reception of broadband services. Ultimately, it achieves synchronous reception of critical narrowband services and high-speed broadband services, meeting diverse service needs in complex scenarios.

[0044] In one embodiment, the method proposed in this invention is illustrated through different application scenarios.

[0045] In industrial IoT scenarios, such as smart factories, AGVs need to receive high-definition video commands (broadband service) and report their location and status (narrowband high-reliability service). At this time, the base station will use the above-mentioned wide and narrowband fusion waveform, embedding a 1MHz narrowband subcarrier cluster in a 20MHz bandwidth. The video data is transmitted through wideband OFDM, and the control commands are transmitted through narrowband. When the AGV enters a long-distance area and the channel conditions deteriorate, the system will automatically switch to pure narrowband mode to ensure uninterrupted communication.

[0046] In emergency communication drone scenarios, when drones fly over disaster areas, they need to transmit high-definition images (broadband service) and flight status (narrowband service). At this time, time-frequency domain fusion waveforms are used, and key frames are repeatedly sent in the narrowband part. In obstructed environments, broadband data is slowed down to adapt to channel conditions, while the narrowband continuously ensures the "heartbeat" signal. The ground station can also adjust waveform parameters in real time through the control domain to ensure stable communication.

[0047] It should be understood that, although this embodiment Figure 2 The steps are shown sequentially as indicated by the arrows, but they are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order in which these steps are performed; they can be executed in other orders. Figure 2At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0048] Example 2 Based on the bandwidth adaptive frequency hopping waveform communication method based on wide and narrow band fusion in Embodiment 1, this embodiment discloses a bandwidth adaptive frequency hopping waveform communication device based on wide and narrow band fusion, such as... Figure 7 As shown, the bandwidth adaptive frequency hopping waveform communication device based on wideband and narrowband fusion includes: a wideband and narrowband fusion frame structure construction module 401, a fusion waveform configuration parameter generation module 402, a wideband and narrowband fusion frequency hopping waveform generation module 403, and a demodulation and decoding module 404, wherein: The wide-narrow band fusion frame structure construction module 401 is used to divide the frequency hopping waveform into narrow band segment and wide band segment in the time domain. The narrow band segment includes FSK narrow band waveform; the wide band segment includes FSK narrow band waveform and OFDM wide band waveform. The OFDM wide band waveform dynamically reserves subcarrier positions as the transmission frequency points of FSK narrow band waveform according to the frequency hopping parameters, thus obtaining the wide-narrow band fusion frame structure.

[0049] The fusion waveform configuration parameter generation module 402 is used to generate wide and narrow fusion waveform configuration parameters based on service requirement parameters, channel status parameters, and communication link parameters.

[0050] The wide and narrow band fusion frequency hopping waveform generation module 403 is used to modulate the wide and narrow band fusion frame structure according to the wide and narrow band fusion waveform configuration parameters to obtain the wide and narrow band fusion frequency hopping waveform; and then send the wide and narrow band fusion frequency hopping waveform to the receiving end.

[0051] The demodulation and decoding module 404 is used by the receiver to synchronize the parameter configuration of the receiver and the transmitter according to the waveform signaling information of the narrowband segment. Then, based on the wide and narrowband fused frequency hopping waveform, it demodulates and decodes the FSK narrowband waveform of the narrowband segment, the FSK narrowband waveform of the wideband segment, and the OFDM wideband waveform respectively to obtain the corresponding narrowband service data and wideband service data.

[0052] In this embodiment, the specific working process and working principle of the wide-narrowband fusion frame structure construction module 401, the fusion waveform configuration parameter generation module 402, the wide-narrowband fusion frequency hopping waveform generation module 403, and the demodulation and decoding module 404 are the same as those in Embodiment 1, and therefore will not be described again in this embodiment. Each unit module can be implemented entirely or partially through software, hardware, or a combination thereof. Each unit module can be embedded in or independent of the processor in the computer device in hardware form, or it can be stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to the above unit modules.

[0053] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0054] 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.

[0055] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A bandwidth-adaptive frequency-hopping waveform communication method based on wide and narrowband fusion, characterized in that, The method includes: The transmitting end divides the frequency hopping waveform into a narrowband segment and a wideband segment in the time domain. The narrowband segment includes the FSK narrowband waveform; the wideband segment includes the FSK narrowband waveform and the OFDM wideband waveform. The OFDM wideband waveform dynamically reserves subcarrier positions as the transmission frequency points of the FSK narrowband waveform according to the frequency hopping parameters, thus obtaining a wideband and narrowband fused frame structure. Based on service requirement parameters, channel status parameters, and communication link parameters, generate wide and narrow fusion waveform configuration parameters; Based on the wide-narrow fusion waveform configuration parameters, the wide-narrow fusion frame structure is modulated to obtain a wide-narrow fusion frequency hopping waveform; then the wide-narrow fusion frequency hopping waveform is sent to the receiving end. The receiving end synchronizes the parameter configuration of the receiver and transmitter according to the waveform signaling information of the narrowband segment. Then, based on the wide and narrowband fused frequency hopping waveform, it demodulates and decodes the FSK narrowband waveform of the narrowband segment, the FSK narrowband waveform of the wideband segment, and the OFDM wideband waveform respectively to obtain the corresponding narrowband service data and wideband service data.

2. The bandwidth adaptive frequency hopping waveform communication method based on wide and narrowband fusion according to claim 1, characterized in that, In the aforementioned wide-narrowband fusion frame structure, the FSK narrowband waveform of the narrowband segment is used as the entry point for the time-domain synchronization and parameter synchronization of the entire waveform in the time domain. In the frequency domain, frequency points and power are dynamically allocated to the FSK narrowband waveform in the narrowband segment based on the frequency hopping rules and channel fading.

3. The bandwidth adaptive frequency hopping waveform communication method based on wide and narrowband fusion according to claim 2, characterized in that, In the broadband segment, a frequency domain guard band is set between the reserved subcarrier position and other subcarriers of the OFDM broadband waveform.

4. The bandwidth adaptive frequency hopping waveform communication method based on wide and narrowband fusion according to claim 1, characterized in that, When generating a wide-narrowband fused frequency-hopping waveform, the following is also included: The system detects channel status parameters and communication link parameters in real time, and switches the waveform mode or modifies the wide-narrow fusion waveform configuration parameters based on the channel status parameters and the communication link parameters.

5. The bandwidth adaptive frequency hopping waveform communication method based on wide and narrowband fusion according to any one of claims 1 to 4, characterized in that, The FSK narrowband waveform of the narrowband segment is modulated based on hopping code spread spectrum and polarization coding.

6. The bandwidth adaptive frequency hopping waveform communication method based on wide and narrowband fusion according to any one of claims 1 to 4, characterized in that, The OFDM broadband waveform in the broadband band suppresses out-of-band interference by windowing and clipping.

7. The bandwidth adaptive frequency hopping waveform communication method based on wide and narrowband fusion according to any one of claims 1 to 4, characterized in that, The wide-narrow fusion waveform configuration parameters include narrowband frequency hopping parameters, bandwidth parameters, modulation and coding parameters, and symbol length parameters.

8. The bandwidth adaptive frequency hopping waveform communication method based on wide and narrowband fusion according to any one of claims 1 to 4, characterized in that, The waveform signaling information of the narrowband segment includes: narrowband frequency hopping parameters, waveform bandwidth, effective subcarrier position, modulation and coding parameters, transmission symbol length, channel precoding information, and verification information.

9. The bandwidth adaptive frequency hopping waveform communication method based on wide and narrowband fusion according to any one of claims 1 to 4, characterized in that, When generating the broadband and narrowband converged frequency hopping waveform, the method also includes: adopting a time-frequency dual-dimensional multiplexing mechanism to divide the waveform from the time domain and frequency domain into narrowband synchronization and signaling, narrowband control transmission waveform and broadband service transmission waveform.

10. A bandwidth-adaptive frequency-hopping waveform communication device based on wide and narrowband fusion, characterized in that, The device includes: A wide-narrow band fusion frame structure construction module is used to divide the frequency hopping waveform into a narrow band segment and a wide band segment in the time domain. The narrow band segment includes an FSK narrow band waveform; the wide band segment includes an FSK narrow band waveform and an OFDM wide band waveform, and the OFDM wide band waveform dynamically reserves subcarrier positions as the transmission frequency points of the FSK narrow band waveform according to the frequency hopping parameters, thereby obtaining a wide-narrow band fusion frame structure. The fused waveform configuration parameter generation module is used to generate wide and narrow fused waveform configuration parameters based on service requirement parameters, channel status parameters, and communication link parameters. The wide-narrow band fusion frequency hopping waveform generation module is used to modulate the wide-narrow band fusion frame structure according to the wide-narrow band fusion waveform configuration parameters to obtain the wide-narrow band fusion frequency hopping waveform; and then send the wide-narrow band fusion frequency hopping waveform to the receiving end; The demodulation and decoding module is used by the receiving end to synchronize the parameter configuration of the receiver and the transmitter according to the waveform signaling information of the narrowband segment, and then demodulate and decode the FSK narrowband waveform of the narrowband segment, the FSK narrowband waveform of the wideband segment, and the OFDM wideband waveform based on the wideband-narrowband fused frequency hopping waveform to obtain the corresponding narrowband service data and wideband service data.

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