CN-122002257-A - Lightweight multi-device communication protocol intelligent adaptation conversion system for emergency rescue

CN122002257ACN 122002257 ACN122002257 ACN 122002257ACN-122002257-A

Abstract

The invention relates to the technical field of wireless communication, in particular to a lightweight multi-device communication protocol intelligent adaptation conversion system for emergency rescue, which comprises a broadband signal segmentation acquisition step, a conversion scheduling control step, a heterogeneous protocol stream translation step, a dynamic spectrum fingerprint routing step, a digital spectrum moving and resampling step, wherein the broadband signal segmentation acquisition step is used for cutting broadband IQ data stream into discrete signal fragments based on an energy threshold value and an instantaneous bandwidth parameter, extracting physical layer characteristics and packaging to generate unified protocol data frames, the conversion scheduling control step is used for analyzing metadata labels to judge source protocol types and carrying out hash matching on the source protocol types and a supporting protocol list, the heterogeneous protocol stream translation step is used for responding to known protocol judgment and carrying out load isolation mapping or ciphertext shell reconstruction based on a protocol parameter mapping table to generate target protocol baseband data stream, and the dynamic spectrum fingerprint routing step is used for responding to unknown protocol judgment and establishing a transparent bridging channel and carrying out digital spectrum moving and resampling on original IQ slices.

Inventors

FANG CHAO
YIN LIPENG
LOU CHENGCHAO
CHEN CHAOCHENG
ZHENG CHENGLONG
CHEN ZHONGJIU
HUANG HENGLI

Assignees

浙江宇迈智能科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260408

Claims (8)

1. The intelligent adapting conversion system for the lightweight multi-equipment communication protocol for emergency rescue is characterized by comprising a broadband signal segmentation acquisition module, a conversion scheduling control module, a heterogeneous protocol stream translation module and a dynamic spectrum fingerprint routing module; The broadband signal segmentation acquisition module is used for acquiring broadband IQ data flow input by the radio frequency front end, cutting the broadband IQ data flow into discrete signal segments in real time based on a preset energy threshold and instantaneous bandwidth parameters, extracting physical layer signal characteristics of the discrete signal segments, and packaging to generate unified protocol data frames; the conversion scheduling control module is used for analyzing metadata labels in the unified protocol data frame, judging the source protocol type of the unified protocol data frame, and matching the source protocol type with a preset supporting protocol list; The heterogeneous protocol stream translation module is used for responding to the judging result that the source protocol type is a known protocol, executing load isolation mapping operation or ciphertext shell reconstruction operation on the unified protocol data frame based on a preset protocol parameter mapping table, and generating a baseband data stream of a target protocol; The dynamic spectrum fingerprint routing module is used for responding to the judging result that the source protocol type is an unknown protocol, establishing a transparent bridging channel, executing digital spectrum shifting and resampling operation on the original IQ slice contained in the unified protocol data frame, and generating signal data mapped to a target frequency band.
2. The intelligent adapting conversion system of a lightweight multi-device communication protocol for emergency rescue according to claim 1, wherein the process of generating a unified protocol data frame by the broadband signal segment acquisition module comprises: Performing modulation recognition and symbol rate estimation on discrete signal fragments by using a neural network model running on a digital signal processing unit to generate a modulation type label; constructing a unified protocol data frame data structure comprising a time stamp, an energy feature vector, a modulation type tag, a payload pointer and an original IQ slice; and writing the unified protocol data frame into an on-chip block memory of the field programmable gate array, and transmitting the writing address of the unified protocol data frame to the conversion scheduling control module.
3. The lightweight multi-device communication protocol intelligent adapter conversion system for emergency rescue of claim 1, wherein the heterogeneous protocol stream translation module performs a load isolation mapping operation comprising: When the source protocol type is a digital voice protocol and the target protocol is an analog voice protocol, extracting vocoder parameters in a unified protocol data frame; Based on the protocol parameter mapping table, directly mapping the vocoder parameters into a frequency modulation difference value or an amplitude modulation depth value of an analog voice protocol, and skipping a pulse code modulation audio restoration step; And generating a baseband data stream of the target protocol according to the modulation frequency deviation value or the modulation depth value.
4. The lightweight multi-device communication protocol intelligent adaptation conversion system for emergency rescue according to claim 1, wherein the heterogeneous protocol stream translation module performs a ciphertext shell reconstruction operation comprising: When the source protocol type and the target protocol adopt the same encryption algorithm, the head part and the tail part of a link layer of the source protocol in the unified protocol data frame are stripped, and encryption load data are reserved; Generating a new link layer header and trailer based on a frame structure specification of a target protocol; And filling the encrypted load data between the head part and the tail part of the new link layer, recombining the encrypted load data into a data frame of a target protocol, and outputting the data frame as a baseband data stream.
5. The lightweight multi-device communication protocol intelligent adaptation conversion system for emergency rescue according to claim 1, wherein the system further comprises a hardware security adaptation module; The heterogeneous protocol stream translation module is also used for routing the unified protocol data frame to the hardware security adaptation module when the source protocol type and the target protocol adopt different encryption algorithms; The hardware security adaptation module is used for decrypting and re-encrypting the load of the unified protocol data frame into a ciphertext format of the target protocol by adopting a stream encryption and decryption mode, and returning the processed load to the heterogeneous protocol stream translation module for encapsulation.
6. The lightweight multi-device communication protocol intelligent adapter conversion system for emergency rescue of claim 1, wherein the process of the dynamic spectrum fingerprint routing module performing digital spectrum shifting and resampling operations comprises: Extracting time-frequency distribution characteristics of the unified protocol data frame, and identifying periodicity rules of discrete signal fragments based on the time-frequency distribution characteristics; Calculating a frequency offset according to the center frequency of the target frequency band; and carrying out frequency spectrum shifting on the original IQ slice in the unified protocol data frame by utilizing the numerical control oscillator and the complex multiplier, and carrying out multiphase filtering resampling on the shifted data according to the target bandwidth.
7. The lightweight multi-device communication protocol intelligent adaptation conversion system for emergency rescue according to claim 1, wherein the heterogeneous protocol stream translation module is further configured to perform a fuzzy reconstruction operation: When the check bit of the unified protocol data frame shows that the data is damaged, interpolation repair is carried out on the damaged load data segment by utilizing redundant information in the unified protocol data frame and the context characteristics of the historical frame; And outputting the target protocol baseband data stream corresponding to the repaired load data segment.
8. The lightweight multi-device communication protocol intelligent adaptation switching system for emergency rescue according to claim 1, wherein the switching schedule control module is further configured to perform a protocol switching operation: monitoring the protocol type change condition of an input signal stream in real time; when the source protocol type is detected to be changed, the protocol parameter mapping table pointer called by the heterogeneous protocol streaming translation module is updated, and complete protocol stack software is not reloaded.

Description

Lightweight multi-device communication protocol intelligent adaptation conversion system for emergency rescue Technical Field The invention relates to the technical field of wireless communication, in particular to a lightweight multi-device communication protocol intelligent adaptation conversion system for emergency rescue. Background In an emergency rescue communication scene, heterogeneous communication equipment with various systems usually exists on site, the electromagnetic environment is complex and changeable, and extremely high requirements are provided for instantaneity and stability of interconnection and intercommunication of cross-equipment; In the prior art, when the heterogeneous protocol conversion is processed, a full-frame demodulation and complete OSI seven-layer decapsulation mode is generally adopted, and frequent data read-write interaction is performed by depending on an external memory, so that the architecture not only causes large system power consumption and high conversion time delay, but also causes congestion and power consumption problems due to frequent bus competition. In addition, the traditional relay mode often faces the security risks of complex key management and exposure of plaintext in a memory in the cross-system conversion, and a software stack is often required to be restarted or reloaded during protocol switching, so that the quick response requirement of the lightweight equipment in a variable actual combat environment is difficult to adapt. Therefore, how to reduce the time delay and the energy consumption of heterogeneous protocol conversion through stream processing under the condition of limited hardware resources, and simultaneously, consider the high security and the anti-interference capability of communication, becomes a technical problem to be solved. Disclosure of Invention In order to solve the technical problems, the invention provides a lightweight multi-device communication protocol intelligent adaptation conversion system for emergency rescue, and specifically, the technical scheme of the invention comprises the following steps: The system comprises a broadband signal segmentation acquisition module, a conversion scheduling control module, a heterogeneous protocol stream translation module and a dynamic spectrum fingerprint routing module; The broadband signal segmentation acquisition module is used for acquiring broadband IQ data flow input by the radio frequency front end, cutting the broadband IQ data flow into discrete signal segments in real time based on a preset energy threshold and instantaneous bandwidth parameters, extracting physical layer signal characteristics of the discrete signal segments, and packaging to generate unified protocol data frames; the conversion scheduling control module is used for analyzing metadata labels in the unified protocol data frame, judging the source protocol type of the unified protocol data frame, and matching the source protocol type with a preset supporting protocol list; The heterogeneous protocol stream translation module is used for responding to the judging result that the source protocol type is a known protocol, executing load isolation mapping operation or ciphertext shell reconstruction operation on the unified protocol data frame based on a preset protocol parameter mapping table, and generating a baseband data stream of a target protocol; The dynamic spectrum fingerprint routing module is used for responding to the judging result that the source protocol type is an unknown protocol, establishing a transparent bridging channel, executing digital spectrum shifting and resampling operation on the original IQ slice contained in the unified protocol data frame, and generating signal data mapped to a target frequency band. Preferably, the process of generating the unified protocol data frame by the broadband signal segmentation acquisition module comprises the following steps: Performing modulation recognition and symbol rate estimation on discrete signal fragments by using a neural network model running on a digital signal processing unit to generate a modulation type label; constructing a unified protocol data frame data structure comprising a time stamp, an energy feature vector, a modulation type tag, a payload pointer and an original IQ slice; and writing the unified protocol data frame into an on-chip block memory of the field programmable gate array, and transmitting the writing address of the unified protocol data frame to the conversion scheduling control module. Preferably, the process of the heterogeneous protocol stream translation module executing the load isolation mapping operation includes: When the source protocol type is a digital voice protocol and the target protocol is an analog voice protocol, extracting vocoder parameters in a unified protocol data frame; Based on the protocol parameter mapping table, directly mapping the vocoder parameters into a frequency modulation differe