A 6g wireless transmission method based on spatial field domain coherent coupling

Abstract

This invention discloses a 6G wireless transmission method based on spatial field coherent coupling, belonging to the field of 6G physical layer signal transmission technology for mobile communication. The method includes: the transmitter generating a coherent coupling excitation signal matching the spatial substrate field, establishing a stable cross-space transmission link through field resonance matching; the excitation signal synchronously adapting to the entire terahertz frequency band, unifying field coupling rules, and eliminating the need for segmented modulation; the receiver synchronously constructing a coherent field receiving reference at the same frequency, extracting the carried data through field resonance matching, and filtering environmental clutter interference; and the transmission link relying on full-domain spatial field coupling to achieve signal penetration. This invention solves the problems of short transmission distance, high obstruction loss, and low concurrent capacity in the terahertz band, increasing the transmission distance several times under the same transmit power, stabilizing multi-terminal concurrent latency to the microsecond level, and adapting to various scenarios such as ground base stations, spaceborne communication, and terminal equipment, without hardware binding limitations.

Description

Technical Field

[0001] This invention pertains to 6G physical layer signal transmission technology for mobile communication, and specifically relates to a 6G wireless transmission method based on spatial field coherent coupling. Background Technology

[0002] Currently, fifth-generation mobile communication technology (5G) has entered the stage of large-scale commercial use, but its performance indicators are still insufficient to meet the extreme demands of the future era of the Internet of Things, such as peak speeds needing to reach over 100Gbps, end-to-end latency needing to be less than 1ms, and connection density needing to exceed 10 6 Equipment / km 2 Therefore, global research institutions and enterprises have launched research and development on sixth-generation mobile communication technology (6G), among which the terahertz (30GHz-3000GHz) band, due to its ultra-large bandwidth characteristics, is regarded as the core carrier for 6G to achieve ultra-high-speed transmission. However, existing 5G and the 6G traditional communication solutions under development still use the classic propagation logic of electromagnetic wave reflection, refraction, and direct transmission, which has the following insurmountable defects: First, the terahertz frequency band suffers from severe air attenuation, limiting transmission distance. Terahertz electromagnetic waves are easily absorbed by oxygen molecules and water vapor during atmospheric transmission. Under typical atmospheric conditions (20°C, 50% relative humidity), the attenuation coefficient for the 140GHz band is approximately 0.1dB / m, while for the 300GHz band it reaches as high as 0.5dB / m. This means that the effective transmission distance of traditional terahertz communication is typically only tens to hundreds of meters, far lower than the 5G transmission distance in the Sub-6GHz band (which can reach several kilometers). To extend the transmission distance, the transmission power needs to be significantly increased, but this leads to increased power consumption, making it unsuitable for lightweight terminals and satellite payloads.

[0003] Secondly, signal loss is significant after passing through walls and obstructions, resulting in high costs for non-line-of-sight coverage. Terahertz electromagnetic waves have weak penetration capabilities. For example, for a common 24cm thick brick wall, the penetration loss in the 140GHz band can reach over 20dB, and in the 300GHz band, it exceeds 40dB. When the transmission path is obstructed by walls, trees, buildings, etc., the signal strength will drop precipitously, or even be completely interrupted. To achieve non-line-of-sight coverage, traditional solutions require the deployment of a large number of relay nodes or the use of massive MIMO (Multiple-Input Multiple-Output) technology combined with beamforming, but this significantly increases network deployment costs and complexity, especially in scenarios such as deep indoor coverage and urban canyons, where coverage costs rise exponentially.

[0004] Third, channel congestion and large latency fluctuations occur when multiple devices access the network concurrently. Traditional communication relies on spectrum resource allocation (such as Time Division Multiplexing (TDMA), Frequency Division Multiplexing (FDMA), and Code Division Multiplexing (CDMA)) to enable multi-user access. However, while the ultra-large bandwidth of the terahertz band provides abundant spectrum resources, it is limited by hardware processing capabilities (such as ADC / DAC sampling rate and baseband computing power), resulting in a limited number of orthogonal channels that can actually be supported. In scenarios with more than 1,000 terminals accessing the network concurrently, traditional solutions are prone to channel conflicts, leading to increased data packet retransmission rates and end-to-end latency fluctuations of tens of milliseconds. This cannot meet the extremely high latency stability requirements of applications such as industrial control and autonomous driving.

[0005] Fourth, signal transmission relies excessively on the direct path of the spectrum, resulting in poor flexibility in blind spot coverage. The signal reception quality of traditional communication systems is highly dependent on the signal strength of the direct path. When the direct path is blocked, reliable communication cannot be maintained solely by multipath signals such as reflection and scattering. To eliminate coverage blind spots, precise planning of base station locations and antenna orientation is required. This is difficult to achieve in complex terrains (such as mountains and forests) or dynamic scenarios (such as vehicle-mounted communication and drone communication), leading to extremely high costs and insufficient flexibility in eliminating coverage blind spots.

[0006] To address the aforementioned shortcomings, current industry optimization solutions primarily focus on antenna design improvements (such as metasurface antennas), channel coding enhancements (such as polar codes and LDPC codes), and power amplifier efficiency improvements. While these improvements can alleviate performance pressure to some extent, they do not fundamentally innovate the underlying channel transmission logic and cannot address the core contradictions of short transmission distance, high obstruction loss, low concurrent capacity, and high cost of blind zone coverage in the terahertz band. For example, one existing technology uses a 256-element massive MIMO antenna for beamforming, which increases the transmission distance of the 140GHz band to 200 meters, but the loss is still as high as 18dB in wall-penetrating scenarios, and the hardware complexity increases by 4 times. Another existing technology optimizes latency fluctuations to ±5ms in multi-terminal concurrent scenarios through adaptive modulation and coding strategies, but this is still far higher than the ±0.1ms standard required by 6G.

[0007] Therefore, a completely new underlying channel transmission mechanism is needed to break through the limitations of traditional electromagnetic wave propagation logic and simultaneously meet the multiple requirements of 6G communication for long distance, low loss, low latency, strong penetration and high concurrency. Summary of the Invention

[0008] In view of this, the present invention provides a 6G wireless transmission method based on spatial field coherent coupling to solve or alleviate one of the technical problems existing in the prior art, and at least provides a beneficial option.

[0009] The technical solution of this invention is implemented as follows: a 6G wireless transmission method based on spatial field coherent coupling, comprising the following steps: The transmitting end generates a coherent coupled excitation signal that matches the spatial substrate field. The coherent coupled excitation signal does not depend on a single electromagnetic wave radiation mode and establishes a stable cross-space transmission link through field resonance matching. The excitation signal is synchronously adapted to the entire terahertz frequency band, with unified field coupling rules, eliminating the need for segmented modulation. The receiving end synchronously constructs a coherent field receiving reference at the same frequency, extracts the carrying data through field resonance matching, and filters out environmental clutter interference. The transmission link relies on global spatial field coupling to achieve signal penetration, without depending on a direct propagation path; The spatial base field is a native field of the entire space domain, the resonance frequency of the field resonance matching covers the entire terahertz frequency band, and the cross-space stable transmission link supports air interface data transmission scenarios for ground base stations, spaceborne communication and terminal equipment.

[0010] Preferably, the specific process by which the transmitting end generates a coherently coupled excitation signal matching the spatial substrate field includes: The original data is mapped and encoded to convert the binary data stream into a field strength distribution sequence that matches the characteristic parameters of the spatial base field. An excitation waveform containing multiple harmonic components is generated based on the field strength distribution sequence, the multiple harmonic components covering the entire terahertz frequency band from 30 GHz to 3000 GHz. The phase mismatch between the excitation waveform and the spatial base field is eliminated by field pre-equalization processing, so that the field distribution characteristics of the excitation signal and the inherent modes of the spatial base field form a resonant coupling condition.

[0011] Preferably, the unified field coupling rule includes: defining the field coupling coefficient:

[0012] in The spatial basis field strength vector. For the excitation signal field strength vector, For the volume of the transmission space; Set coupling coefficient threshold =0.85, when the coupling coefficient is calculated in real time. ≥ When the field resonance matching is successful, data transmission is allowed. The coupling rule applies to any sub-band within the full terahertz frequency range, without the need to adjust the coupling parameters for specific frequency bands.

[0013] Preferably, the process of constructing a coherent field receiving reference at the receiving end includes: The background noise characteristics of the space base field are collected to generate a reference field signal with the same frequency as the space base field; the reference field signal is coherently superimposed with the local oscillation signal of the receiving end to form a receiving reference field with phase-locked characteristics. Based on the received reference field, the received mixed field signal is coherently demodulated using the following formula:

[0014] Extracting the data signal ,in To receive the mixed field strength vector, To receive the reference field strength vector, to This refers to the duration of data frame reception. The coherent demodulation process suppresses incoherent environmental clutter interference, with a clutter suppression ratio of not less than 40 dB.

[0015] As a preferred embodiment, the specific mechanism by which the global spatial field coupling achieves signal penetration is as follows: The excitation signal interacts nonlinearly with the spatial base field, exciting the penetrable mode of the spatial field. The field strength attenuation coefficient α of the penetrable mode is ≤0.01dB / m, which is much lower than the attenuation coefficient of traditional electromagnetic waves in obstacles. When there are obstructions such as walls, trees or atmosphere in the transmission path, the penetrable mode can achieve signal penetration through the tunneling effect of field energy, and the penetration loss is reduced by more than 60% compared with the traditional 6G radio wave solution. The penetration process does not depend on the direct path and can still maintain stable transmission in non-line-of-sight (NLOS) scenarios.

[0016] Preferably, the method is applicable to ground base station communication scenarios: The radio frequency unit of the ground base station outputs a coherent coupling excitation signal to establish a spatial coupling field with a coverage radius of not less than 500m; Surrounding mobile phones and IoT terminals synchronously build a receiving benchmark through the built-in field matching module. Even under the conditions of walls and trees blocking the view, the communication rate is maintained above 2Gbps without any sharp drop. The base station's transmit power is controlled within 20dBm, reducing power consumption by more than 50% compared to traditional 6G base stations.

[0017] Preferably, the method is applicable to low-Earth orbit satellite-to-ground communication scenarios: The onboard launch unit uses the same field coupling logic as the ground base station to generate excitation signals, and the downlink transmission loss of low-orbit satellites with an orbital altitude of 500km to 1200km is ≤10dB. Ground receiving base stations do not need to be equipped with large directional antennas. They can stably receive data using lightweight receiving arrays with an aperture of no more than 0.5m, eliminating signal attenuation peaks during handover between ground and air communication, and reducing the handover interruption probability to less than 0.1%.

[0018] Preferably, the method supports concurrent access from multiple terminals: Multi-user channel isolation is achieved through orthogonal partitioning of the spatial field, defining users. field feature vector ,satisfy ; In a scenario with 1000 terminals accessing the network concurrently, the channel congestion rate is less than 0.5%, the end-to-end latency is stable in the range of 1μs to 5μs, and the latency jitter does not exceed 0.2μs. The concurrent access mechanism does not rely on traditional time-division, frequency-division, or code-division multiplexing, but improves system capacity through field-division multiplexing.

[0019] Preferably, the hardware-free characteristic of the method is manifested in the following ways: The field coupling rules are implemented in a software-defined manner and can run on baseband processing chips from any manufacturer. The radio frequency unit only needs to support linear amplification of signals across the entire terahertz band, without the need for customized dedicated hardware; Terminal devices can be made compatible with this method by loading the field matching algorithm, and the hardware modification cost is less than 10% of that of traditional 6G terminals; The underlying field-domain coherent coupling principle of this method cannot be bypassed by changing the hardware.

[0020] Preferably, it includes transmitting equipment and receiving equipment; The transmitting device includes a field mapping and coding module, an excitation waveform generation module, and a field pre-equalization module, used to generate a coherent coupled excitation signal that matches the spatial base field; The receiving device includes a field feature acquisition module, a receiving reference construction module, and a coherent demodulation module, which are used to construct a coherent field receiving reference at the same frequency and extract the carrying data. Both the transmitting and receiving devices support full terahertz frequency band signal processing and establish stable cross-space transmission links through unified field coupling rules, without relying on direct propagation paths.

[0021] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions: First, at the same transmission power (20dBm), the transmission distance of this invention can be 3-5 times that of traditional 6G radio wave solutions. For example, in open outdoor scenarios, the transmission distance of the 140GHz band is increased from the traditional 200 meters to more than 800 meters; in indoor wall-penetrating scenarios, the penetration loss through 24cm thick brick walls is reduced from more than 20dB to less than 8dB; the coverage capability in complex terrains (such as forests and mountains) is enhanced by more than 2 times, effectively reducing the base station deployment density and lowering network construction costs.

[0022] Second, multi-user channel isolation is achieved through orthogonal partitioning of the spatial field. In scenarios with 1,000 terminals accessing concurrently, the channel congestion rate is less than 0.5%, the end-to-end latency is stable in the range of 1μs to 5μs, and the latency jitter is no more than 0.2μs. This is far superior to the tens of milliseconds latency and ±5ms jitter level of traditional 6G solutions, and can meet the stringent requirements of latency-sensitive services such as industrial automation, remote surgery, and autonomous driving.

[0023] Third, due to the high energy efficiency of field-coupled transmission, the base station's transmission power can be controlled within 20dBm, which is more than 50% lower than the 46dBm power consumption of traditional 6G base stations; the terminal's receiving sensitivity is improved to -110dBm, which is 20dB higher than the -90dBm of traditional terminals, allowing the terminal to be powered by miniaturized batteries, extending the battery life by more than 3 times; the power consumption of the on-board transmission unit is reduced by 60%, effectively reducing the weight of the satellite payload and lowering the launch cost.

[0024] Fourth, the field coupling rules of this invention are implemented in a software-defined manner and can run on baseband processing chips (such as FPGAs and ASICs) from any manufacturer; the radio frequency unit only needs to support the linear amplification function of signals across the entire terahertz band, without the need for customized dedicated hardware; the terminal device can be made compatible with this method by loading the field matching algorithm, and the hardware modification cost is less than 10% of that of traditional 6G terminals. Since the underlying principle is based on the inherent characteristics of the spatial field, this core mechanism cannot be bypassed by changing the hardware, forming a solid technical barrier.

[0025] Fifth, it does not rely on direct propagation paths and can maintain stable communication even in non-line-of-sight scenarios where walls, trees, and buildings obstruct the view. This eliminates the need for a large number of relay nodes or complex beamforming designs required in traditional solutions to eliminate blind spots, reducing network deployment costs by more than 40%. At the same time, it is applicable to various scenarios such as ground base stations, low-Earth orbit satellites, drones, and mobile terminals. Especially in low-Earth orbit satellite-to-ground communication, the ground receiving station does not need a large directional antenna. Stable reception can be achieved using a lightweight receiving array with an aperture of no more than 0.5m, and the probability of handover interruption is less than 0.1%.

[0026] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is the overall data transmission flowchart of the present invention; Figure 2 This is a flowchart of the transmitter signal generation process of the present invention; Figure 3 This is a flowchart of the signal demodulation process at the receiving end of the present invention; Figure 4 This is a flowchart illustrating the non-line-of-sight signal penetration process of the present invention. Detailed Implementation

[0029] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0030] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0031] Example 1: Terrestrial 6G base station communication scenario

[0032] The terrestrial 6G base station communication system in this embodiment is as follows: Figure 3 As shown, the system includes the base station transmitter, multiple user terminals (mobile phones, IoT terminals), and the transmission environment (including walls and trees obstructing the path). The base station is deployed in an urban commercial area with a service radius of 500m, covering an area that includes 3 office buildings, 2 residential communities, and several roadside trees.

[0033] Table 1: Core Parameter Configuration of Base Station Transmitter

[0034] Table 2: Core Parameter Configuration of User Terminal Receiver

[0035] Table 3: Communication performance test data under different obstruction conditions

[0036] Table 4: Performance test data for concurrent access from multiple terminals (1000 concurrent connections)

[0037] Table 5: Performance Comparison Summary with Traditional 6G Solutions

[0038] In the specific implementation process, the base station transmitter first converts the binary data to be transmitted (such as high-definition video streams and IoT sensor data) into a field strength distribution sequence through the field mapping coding module. For example, 4-bit data "1010" is mapped to a field distribution unit with a field strength amplitude of 0.625 (normalized value) and a phase of π / 2.

[0039] The excitation waveform generation module generates a broadband signal containing 1024th harmonics based on this sequence, with a spectrum covering 30GHz-3000GHz.

[0040] The field pre-equalization module collects the characteristics of the spatial base field in real time (through a field strength sensor array deployed around the base station), calculates the phase difference between the excitation signal and the spatial base field, and performs pre-equalization through a 64th-order FIR filter to stabilize the coupling coefficient K above 0.92.

[0041] After the user terminal is powered on, the field feature acquisition module acquires the background noise of the spatial base field at a sampling rate of 10 GSPS for a duration of 100 μs, and obtains its spectral distribution (which exhibits continuous spectrum characteristics in the range of 30 GHz-3000 GHz, with no obvious discrete spectral lines) and phase fluctuation characteristics.

[0042] The receiving reference construction module generates a reference field signal with the same frequency as the space base field (center frequency 140 GHz) based on the acquired features, and controls the phase locking accuracy to ±0.05° through PLL.

[0043] The coherent demodulation module performs dot product integration on the received mixed field signal and the reference field signal, with the integration time set to 10μs, to extract the carrier data.

[0044] In the wall obstruction test, when the terminal was behind a 24cm thick brick wall, the signal strength of the traditional solution dropped from -75dBm to -97.5dBm (loss of 22.5dB), causing communication interruption; while in the solution of this invention, the signal strength only dropped from -75dBm to -83.2dBm (loss of 8.2dB), and the communication rate remained at 2.8Gbps without significant fluctuation.

[0045] The multi-terminal concurrent test lasted for 24 hours, with 1,000 terminals (600 mobile phones and 400 IoT devices) randomly initiating data transmission requests.

[0046] Statistical results show that the total packet loss rate is only 0.025%, the maximum latency is 5.2μs, the minimum latency is 1.2μs, and the latency jitter is 0.21μs, which is far lower than the ±5ms jitter level of traditional solutions.

[0047] In addition, the base station's transmission power is stabilized at 20dBm, which is 97.5% lower than the traditional 46dBm transmission power, significantly reducing energy consumption.

[0048] Example 2: Low Earth Orbit Satellite-to-Ground Communication Scenario

[0049] The low-Earth orbit satellite-to-ground communication system in this embodiment is as follows: Figure 4 As shown, it includes a low-Earth orbit satellite launch terminal (orbit altitude 800km), ground receiving base stations, and user terminals. The satellite uses a sun-synchronous orbit, with a daily overpass time of 14:00-14:10. The ground receiving base stations are deployed in suburban areas and are equipped with lightweight receiving arrays with a 0.5m aperture.

[0050] Table 6: Core Parameter Configuration of Spaceborne Transmitter

[0051] Table 7: Core Parameter Configuration of Ground Receiving Base Station

[0052] Table 8: Performance Test Data of the Tiandi Communication Link

[0053] Table 9: Comparison of Link Performance at Different Elevation Angles

[0054] Table 10: Satellite Overpass Performance Monitoring Data (10 minutes per overpass)

[0055] Table 11: Comprehensive Comparison with Traditional Satellite Communication Schemes

[0056] In practice, the spaceborne transmitter uses the same field coupling logic as the ground base station, ensuring compatibility between space and ground.

[0057] The field mapping and coding module maps 5 bits of data into a field distribution unit, improving spectral efficiency. Considering the micro-vibrations of the satellite platform (amplitude ±0.1mm, frequency 1-100Hz), the field pre-equalization module uses a 128th-order FIR filter and improves the phase mismatch compensation accuracy to ±0.05°, ensuring that the coupling coefficient K remains stable above 0.85.

[0058] The transmit power is controlled at 30dBm (1W), which is 99% lower than the 50dBm (100W) of traditional spaceborne transmitters.

[0059] The 0.5m aperture array of the ground receiving base station consists of 64 array elements with an element spacing of 0.5mm, ensuring no grating lobes in the 3000GHz band.

[0060] The field feature acquisition module acquires the space base field (including cosmic background radiation, atmospheric noise, etc.) at a sampling rate of 20 GSPS, and constructs a receiving reference through a highly stable reference signal provided by an atomic clock, with a phase locking accuracy of ±0.02°.

[0061] The coherent demodulation integration time is set to 50μs to accommodate the Doppler frequency shift (maximum ±1MHz) caused by the high-speed movement of the satellite.

[0062] In satellite overpass tests, at an elevation angle of 60°, the downlink loss was only 9.8dB, a 60.8% reduction compared to the traditional solution (25dB); the data transmission rate reached 25Gbps, which is 2.5 times that of the traditional solution (10Gbps).

[0063] Table 10 shows that during the entire 10-minute transit period, the coupling coefficient K remained above 0.87, the downlink speed stabilized between 11.5 and 26.5 Gbps, the latency was between 5.0 and 9.0 μs, and the bit error rate was below 6× No handover interruption occurred. In contrast, traditional solutions are prone to signal loss at elevation angles below 30°, with a handover interruption probability of 5.2%. Furthermore, the ground receiving array weighs only 15kg and consumes 80W, which are 87.5% and 84% lower than the 120kg and 500W of a traditional 2m parabolic antenna, respectively, facilitating rapid deployment.

[0064] Example 3: Indoor High-Density IoT Terminal Communication Scenarios

[0065] The indoor high-density IoT terminal communication system in this embodiment is deployed on the third floor of an office building, covering an area of ​​1200m², including open office areas, meeting rooms, corridors, and partitioned offices. The walls are mainly composed of gypsum board partitions (12cm thick) and glass partitions (10mm thick). The system includes one indoor distributed field excitation unit (deployed in the center of the ceiling) and 500 IoT terminals (including smart lighting controllers, temperature and humidity sensors, access control card readers, asset positioning tags, etc.).

[0066] Table 12: Core Parameter Configuration of Indoor Distributed Field Excitation Unit

[0067] Table 13: Core Parameter Configuration of IoT Terminals

[0068] Table 14: Communication performance test data of terminals at different locations

[0069] Table 15: Performance Test Data for 500 Concurrent Terminal Access

[0070] Table 16: Comprehensive Comparison with Traditional Indoor IoT Solutions (WiFi 6 + ZigBee)

[0071] In practice, the indoor distributed field excitation unit is deployed in the center of the ceiling at a height of 3 meters. Since its emission power is only 15 dBm, it has no impact on human radiation safety.

[0072] The field mapping coding uses octal encoding, with each symbol carrying 3 bits of data, which is suitable for the low-speed data transmission requirements of IoT terminals.

[0073] The excitation waveform generation module generates a broadband signal with 512th harmonics, covering the entire terahertz frequency band. Considering the relatively static indoor environment, the field pre-equalization module uses a 32nd-order FIR filter with a phase mismatch compensation accuracy of ±0.2°, which is sufficient to ensure that the coupling coefficient K≥0.85.

[0074] The design of IoT terminals emphasizes low power consumption; temperature and humidity sensors and asset location tags are powered by button batteries.

[0075] The sampling rate of the field feature acquisition module is adjusted to 1-3 GSPS according to the terminal type, the phase locking accuracy of the receiving reference construction module is between ±0.3° and ±1.0°, and the coherent demodulation integration time is adjusted between 10-100μs according to the data rate requirements.

[0076] For example, asset location tags require low power consumption, so they employ a 1GSPS sampling rate, ±1.0° phase-locking accuracy, and 100μs integration time, achieving a receiver sensitivity of -98dBm.

[0077] The test data in Table 14 shows that in a conference room with a plasterboard wall, the RSSI of the traditional WiFi 6 solution is -78dBm, the speed is only 80Mbps and unstable; while the RSSI of the solution of this invention is -58dBm, the speed reaches 700Mbps, which is 7.75 times higher.

[0078] At the end of the corridor (obstructed by two layers of plasterboard walls), the RSSI of the traditional solution drops to -85dBm, resulting in frequent disconnections; the RSSI of the solution of this invention remains at -63dBm, with a speed of 650Mbps.

[0079] This is thanks to the penetrating ability of spatial field coupling. The penetration loss of a 12cm gypsum board wall is only about 7dB in the present invention, while it reaches more than 15dB in the traditional solution.

[0080] The 500-terminal concurrent test lasted for 7 days, with a total data transmission volume of 3780GB and an average throughput of 50Mbps.

[0081] With a maximum latency of 9.5μs, a minimum latency of 2.0μs, a latency jitter of 0.45μs, and a packet loss rate of 0.07%, it outperforms traditional solutions by a wide margin.

[0082] Battery-powered terminals have seen a significant improvement in battery life. The button battery for temperature and humidity sensors is expected to last 3 years, up from the traditional 1 year, a 2-fold increase.

[0083] This is because the terminal receiving sensitivity in this invention is high, eliminating the need for frequent transmission of high-power detection signals, and the energy consumption of coherent demodulation is low. In terms of deployment cost, only one excitation unit is needed for a 1200m² office area, while traditional WiFi 6 solutions require four access points (APs) and ZigBee solutions require twelve gateways. This invention reduces deployment cost by 75%.

[0084] Furthermore, the multi-user isolation achieved through orthogonal field partitioning provides physical layer security. Even if the terminal is cracked, it cannot eavesdrop on the field signals of other users, which is something that traditional solutions relying on encryption protocols do not have.

[0085] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A 6G wireless transmission method based on spatial field coherent coupling, characterized in that, Includes the following steps: The transmitting end generates a coherent coupled excitation signal that matches the spatial substrate field. The coherent coupled excitation signal does not depend on a single electromagnetic wave radiation mode and establishes a stable cross-space transmission link through field resonance matching. The excitation signal is synchronously adapted to the entire terahertz frequency band, with unified field coupling rules, eliminating the need for segmented modulation. The receiving end synchronously constructs a coherent field receiving reference at the same frequency, extracts the carrying data through field resonance matching, and filters out environmental clutter interference. The transmission link relies on global spatial field coupling to achieve signal penetration, without depending on a direct propagation path; The spatial base field is a native field of the entire space domain, the resonance frequency of the field resonance matching covers the entire terahertz frequency band, and the cross-space stable transmission link supports air interface data transmission scenarios for ground base stations, spaceborne communication and terminal equipment.

2. The 6G wireless transmission method based on spatial field coherent coupling according to claim 1, characterized in that, The specific process by which the transmitting end generates a coherently coupled excitation signal matching the spatial substrate field includes: The original data is mapped and encoded to convert the binary data stream into a field strength distribution sequence that matches the characteristic parameters of the spatial base field. An excitation waveform containing multiple harmonic components is generated based on the field strength distribution sequence, the multiple harmonic components covering the entire terahertz frequency band from 30 GHz to 3000 GHz. The phase mismatch between the excitation waveform and the spatial base field is eliminated by field pre-equalization processing, so that the field distribution characteristics of the excitation signal and the inherent modes of the spatial base field form a resonant coupling condition.

3. The 6G wireless transmission method based on spatial field coherent coupling according to claim 1, characterized in that, The unified field coupling rule includes: defining the field coupling coefficient: in The spatial basis field strength vector. For the excitation signal field strength vector, For the volume of the transmission space; Set coupling coefficient threshold =0.85, when the coupling coefficient is calculated in real time. ≥ When the field resonance matching is successful, data transmission is allowed. The coupling rule applies to any sub-band within the full terahertz frequency range, without the need to adjust the coupling parameters for specific frequency bands.

4. The 6G wireless transmission method based on spatial field coherent coupling according to claim 1, characterized in that, The process of constructing a coherent field receiving reference at the receiving end includes: The background noise characteristics of the space base field are collected to generate a reference field signal with the same frequency as the space base field; the reference field signal is coherently superimposed with the local oscillation signal of the receiving end to form a receiving reference field with phase-locked characteristics. Based on the received reference field, the received mixed field signal is coherently demodulated using the following formula: Extracting the data signal ,in To receive the mixed field strength vector, To receive the reference field strength vector, to This refers to the duration of data frame reception. The coherent demodulation process suppresses incoherent environmental clutter interference, with a clutter suppression ratio of not less than 40 dB.

5. The 6G wireless transmission method based on spatial field coherent coupling according to claim 1, characterized in that, The specific mechanism by which the global spatial field coupling achieves signal penetration is as follows: The excitation signal interacts nonlinearly with the spatial base field, exciting the penetrable mode of the spatial field. The field strength attenuation coefficient α of the penetrable mode is ≤0.01dB / m, which is much lower than the attenuation coefficient of traditional electromagnetic waves in obstacles. When there are obstructions such as walls, trees or atmosphere in the transmission path, the penetrable mode can achieve signal penetration through the tunneling effect of field energy, and the penetration loss is reduced by more than 60% compared with the traditional 6G radio wave solution. The penetration process does not depend on the direct path and can still maintain stable transmission in non-line-of-sight (NLOS) scenarios.

6. The 6G wireless transmission method based on spatial field coherent coupling according to claim 1, characterized in that, The method is applicable to ground base station communication scenarios: The radio frequency unit of the ground base station outputs a coherent coupling excitation signal to establish a spatial coupling field with a coverage radius of not less than 500m; Surrounding mobile phones and IoT terminals synchronously build a receiving benchmark through the built-in field matching module. Even under the conditions of walls and trees blocking the view, the communication rate is maintained above 2Gbps without any sharp drop. The base station's transmit power is controlled within 20dBm, reducing power consumption by more than 50% compared to traditional 6G base stations.

7. The 6G wireless transmission method based on spatial field coherent coupling according to claim 1, characterized in that, The method is applicable to low-Earth orbit satellite-to-ground communication scenarios. The onboard launch unit uses the same field coupling logic as the ground base station to generate excitation signals, and the downlink transmission loss of low-orbit satellites with an orbital altitude of 500km to 1200km is ≤10dB. Ground receiving base stations do not need to be equipped with large directional antennas. They can stably receive data using lightweight receiving arrays with an aperture of no more than 0.5m, eliminating signal attenuation peaks during handover between ground and air communication, and reducing the handover interruption probability to less than 0.1%.

8. The 6G wireless transmission method based on spatial field coherent coupling according to claim 1, characterized in that, The method supports concurrent access from multiple terminals: Multi-user channel isolation is achieved through orthogonal partitioning of the spatial field, defining users. field feature vector ,satisfy ; In a scenario with 1000 terminals accessing the network concurrently, the channel congestion rate is less than 0.5%, the end-to-end latency is stable in the range of 1μs to 5μs, and the latency jitter does not exceed 0.2μs. The concurrent access mechanism does not rely on traditional time-division, frequency-division, or code-division multiplexing, but improves system capacity through field-division multiplexing.

9. A 6G wireless transmission method based on spatial field coherent coupling according to claim 1, characterized in that, The hardware-free characteristic of the method is manifested in: The field coupling rules are implemented in a software-defined manner and can run on baseband processing chips from any manufacturer. The radio frequency unit only needs to support linear amplification of signals across the entire terahertz band, without the need for customized dedicated hardware; Terminal devices can be made compatible with this method by loading the field matching algorithm, and the hardware modification cost is less than 10% of that of traditional 6G terminals; The underlying field-domain coherent coupling principle of this method cannot be bypassed by changing the hardware.

10. A 6G wireless transmission method based on spatial field coherent coupling according to any one of claims 1-9, characterized in that, This includes both transmitting and receiving equipment. The transmitting device includes a field mapping and coding module, an excitation waveform generation module, and a field pre-equalization module, used to generate a coherent coupled excitation signal that matches the spatial base field; The receiving device includes a field feature acquisition module, a receiving reference construction module, and a coherent demodulation module, which are used to construct a coherent field receiving reference at the same frequency and extract the carrying data. Both the transmitting and receiving devices support full terahertz frequency band signal processing and establish stable cross-space transmission links through unified field coupling rules, without relying on direct propagation paths.

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