CN-121985389-A - FSK and LORA dual-band self-adaptive switching method based on environment awareness

CN121985389ACN 121985389 ACN121985389 ACN 121985389ACN-121985389-A

Abstract

The invention discloses an FSK and LORA dual-band self-adaptive switching method based on environment perception, which comprises the following steps of collecting multi-dimensional parameters of a communication environment and a link state in real time, carrying out standardization processing on the multi-dimensional parameters, determining a weight coefficient of the multi-dimensional parameters based on an analytic hierarchy process, constructing a switching decision index by combining the standardized multi-dimensional parameters, setting an FSK frequency band starting threshold interval, a LOAR frequency band starting threshold interval and a transitional state threshold interval according to the value range of the switching decision index, judging a communication frequency band which is currently started according to the real-time calculation result of the switching decision index, starting a frequency band pre-switching mechanism if the communication frequency band is in a transitional state, collecting communication quality parameters under a new frequency band after switching is completed, triggering a fine adjustment model parameter flow if the communication quality does not reach a preset standard, and dynamically optimizing the weight parameter and the threshold interval. The invention solves the technical problem of how to realize self-adaption and high-reliability switching of the FSK and LORA double frequency bands based on environment awareness.

Inventors

PENG KE
ZHOU WENKE
XIAO CHANGMIN
HU ZEXIN
GUO XIAOGANG

Assignees

威胜信息技术股份有限公司

Dates

Publication Date: 20260505
Application Date: 20251231

Claims (10)

1. The FSK and LORA dual-band self-adaptive switching method based on environment awareness is characterized by comprising the following steps of: s1, acquiring and standardizing environment and link parameters, wherein terminal equipment acquires the multidimensional parameters of a communication environment and a link state in real time and performs the standardized processing on the multidimensional parameters; s2, constructing and evaluating a switching decision model, determining a weight coefficient of a multi-dimensional parameter based on an analytic hierarchy process, constructing a switching decision index by combining the standardized multi-dimensional parameter, and setting an FSK frequency band enabling threshold interval, a LOAR frequency band enabling threshold interval and a transition state threshold interval according to the value range of the switching decision index; s3, performing double-frequency-band self-adaptive switching, judging a communication frequency band which is required to be started at present by the terminal equipment according to a real-time calculation result of a switching decision index, and starting a frequency band pre-switching mechanism if the communication frequency band is in a transitional state; S4, feedback of a switching effect and model optimization are carried out, after switching is completed, communication quality parameters in a new frequency band are collected, if the communication quality does not reach a preset standard, a model parameter fine adjustment process is triggered, and weight parameters and a threshold interval are dynamically optimized.
2. The method of claim 1, wherein the multidimensional parameters include signal strength, signal-to-noise ratio, channel occupancy, data transmission rate requirements, and device residual capacity.
3. The method for adaptively switching between FSK and LORA based on environment awareness according to claim 2, wherein the channel occupancy is obtained by calculating a signal activity duration duty ratio of a target channel within a preset time window, and the data transmission rate requirement is dynamically issued to a terminal device by an upper layer application according to a data type.
4. The FSK and LORA dual-band adaptive switching method based on environment awareness according to claim 2, wherein the step S1 performs a normalization process on the multi-dimensional parameters, specifically: normalizing the multi-acquired multi-dimensional parameters, and mapping each parameter value to the corresponding parameter value Interval.
5. The FSK and LORA dual-band self-adaptive switching method based on environment awareness according to claim 4, wherein the normalization processing adopts a linear normalization method, and comprises positive index processing and negative index processing; The forward index processing is as follows: ; the negative index processing is as follows: ; wherein the signal strength, the signal-to-noise ratio, the data transmission rate requirement and the residual capacity of the equipment are positive indexes, the channel occupancy rate is a negative index, As the normalized forward index, the positive index is calculated, As the negative-going index after normalization, As an original multi-dimensional parameter, The maximum and minimum values of the original multi-dimensional parameters, respectively.
6. The FSK and LORA dual-band adaptive switching method based on environmental awareness according to any one of claims 1 to 3, wherein the step S2 is based on a hierarchical analysis method to determine a weight coefficient of a multi-dimensional parameter, specifically: Establishing a hierarchical structure model of a target layer, a criterion layer and a scheme layer, wherein the target layer is a dual-band optimal switching decision, the criterion layer is each environment and link parameter, and the scheme layer is an FSK frequency band/LORA frequency band; And calculating the weight coefficient of the parameters of the criterion layer through the pair comparison matrix, and carrying out consistency check.
7. The method for adaptively switching between FSK and LORA dual bands based on environmental awareness according to claim 2, wherein the switching decision index is: ; Wherein, the In order to switch the decision index(s), The weight coefficients of the signal strength, the signal-to-noise ratio, the channel occupancy rate, the data transmission rate requirement and the equipment residual capacity are respectively, For the normalized signal strength, the signal strength of the signal is, For the normalized signal-to-noise ratio, For the normalized channel occupancy, For the normalized data transmission rate requirement, And the remaining power of the device after normalization.
8. The method for adaptively switching FSK and LORA dual bands based on environmental awareness according to any one of claims 1-3, wherein the step S2 sets an FSK band enable threshold interval, a LOAR band enable threshold interval, and a transition state threshold interval according to a value range of a switching decision index, specifically: when switching decision index When the FSK frequency band is started; when switching decision index When the method is used, LOAR frequency bands are started; when switching decision index And when the terminal equipment enters a transitional state.
9. The method for adaptively switching between FSK and LORA dual bands based on environmental awareness according to any one of claims 1 to 3, wherein the band pre-switching mechanism includes that the terminal device activates the FSK and LOAR dual band communication modules simultaneously, configures communication parameters of a target band based on current environmental parameters, performs seamless connection of data after the establishment of a communication link of the target band by buffering non-transmission data of the current band, and controls switching delay within a first time threshold.
10. The method for adaptively switching between FSK and LORA based on environment awareness according to any one of claims 1 to 3, wherein the communication quality parameters include a packet loss rate and a transmission delay, and if the packet loss rate > a first percentage or the transmission delay > a second time threshold, adjusting weight coefficients of the parameters, increasing the weight coefficients for parameters affecting the communication quality, and dynamically correcting a threshold interval.

Description

FSK and LORA dual-band self-adaptive switching method based on environment awareness Technical Field The invention relates to the technical field of wireless communication, in particular to an FSK and LORA dual-band self-adaptive switching method based on environment awareness. Background In wireless communication scenes such as the Internet of things, industrial control, intelligent sensing and the like, the stability, transmission efficiency and energy consumption control of a communication link form a core technical requirement. The Frequency Shift Keying (FSK) technology has the technical characteristics of simple structure, controllable cost, high response speed and the like, can efficiently complete the data transmission task in a short-distance and low-interference communication environment, and the Long-range Radio (LORA) technology shows remarkable technical superiority in a complex electromagnetic environment and a Long-distance communication scene by virtue of excellent anti-interference performance, long-distance transmission capability and low power consumption. However, in the prior art solutions, the wireless communication terminal generally only adopts a single communication band of FSK or LORA, and cannot adaptively adjust according to a dynamically changing communication environment. When the terminal adopting the FSK technology is in a strong interference and long-distance communication scene, the problems of data packet loss, transmission interruption and the like are easy to occur, while the terminal adopting the LORA technology has the disadvantage of lower transmission rate under a short-distance and low-interference environment, and meanwhile, the energy consumption and the ineffective consumption of frequency spectrum resources are caused. Part of the existing dual-band communication schemes trigger frequency band switching only based on a single index (such as signal strength), lack of comprehensive perception and comprehensive evaluation of communication environment, cause problems of switching time judgment deviation, frequent switching or switching lag and the like, and further influence the quality of a communication link. The patent document with the application number of CN202410684502.4 discloses a remote radio communication method based on a spreading factor index and a related device, wherein the method comprises the steps of dividing a plurality of information bits into index bits and modulation bits based on a selectable spreading factor number and an adjustable transmission rate parameter in one symbol period, mapping the index bits into a spreading factor sequence according to a preset combination number rule and a preset sequence mapping table based on the selectable spreading factor number and the adjustable transmission rate parameter to generate a first chirp signal corresponding to each spreading factor, respectively converting the modulation bits into decimal symbols associated with each spreading factor, respectively modulating the decimal symbols into bearing signals, respectively multiplying the bearing signals with the associated first chirp signals to obtain and superimpose second chirp signals associated with each spreading factor to obtain a transmission signal. The prior art fails to solve the above technical problems, and therefore, a method for adaptively switching between FSK and LORA dual bands based on environmental awareness needs to be provided to solve the technical problems of how to realize adaptive and highly reliable switching between FSK and LORA dual bands based on environmental awareness. Disclosure of Invention The invention mainly aims to provide an FSK and LORA dual-band self-adaptive switching method based on environment awareness, which aims to solve the technical problem of how to realize self-adaptive and high-reliability switching of FSK and LORA dual-band based on environment awareness. In order to achieve the above purpose, the present invention provides an FSK and LORA dual-band adaptive switching method based on environmental awareness, wherein the FSK and LORA dual-band adaptive switching method based on environmental awareness includes the following steps: s1, acquiring and standardizing environment and link parameters, wherein terminal equipment acquires the multidimensional parameters of a communication environment and a link state in real time and performs the standardized processing on the multidimensional parameters; s2, constructing and evaluating a switching decision model, determining a weight coefficient of a multi-dimensional parameter based on an analytic hierarchy process, constructing a switching decision index by combining the standardized multi-dimensional parameter, and setting an FSK frequency band enabling threshold interval, a LOAR frequency band enabling threshold interval and a transition state threshold interval according to the value range of the switching decision index; s3, performing double-frequency-