CN-121984527-A - System and method for low-altitude communication data transmission

CN121984527ACN 121984527 ACN121984527 ACN 121984527ACN-121984527-A

Abstract

The application discloses a system and a method for low-altitude communication data transmission. In the traditional 5G architecture, an Active Antenna Unit (AAU) only bears radio frequency transceiving, and all data needs to be shunted through a 5G core network. The system comprises an AAU and multiple access edge computing (MEC) node, wherein the AAU integrates a wireless radio frequency module, a baseband processing module, a communication data processing module, an identification analysis chip and a second physical port, the communication data processing module distinguishes low-altitude communication data through a hash matching algorithm, packages the low-altitude communication data analyzed by the identification analysis chip into a Lightweight Transmission Protocol (LTP) frame, and sends the Lightweight Transmission Protocol (LTP) frame to the MEC node through the second physical port, and the MEC node analyzes the LTP frame and dynamically adjusts bandwidth. The method comprises an uplink (signal processing-identification extraction-data splitting) and a downlink (data aggregation-code modulation-radio frequency transmission). The application realizes the local distribution of the low-altitude communication data, reduces the transmission delay and improves the distribution precision and the bandwidth utilization rate.

Inventors

QIN ZHENG
LIU RONGKE
ZHANG HONGSHI
HOU CHUNBIN
SUN JIE
HUANG JUNJIE
QIN BAOGEN

Assignees

深圳北航新兴产业技术研究院
北京航空航天大学
北京壹岷科技有限公司

Dates

Publication Date: 20260505
Application Date: 20251226

Claims (10)

1. A system for low-altitude communication data transmission, the system comprising an Active Antenna Unit (AAU) and a multiple access edge computing (MEC) node; the Active Antenna Unit (AAU) comprises a wireless radio frequency module, a baseband processing module, a communication data processing module, an identification analysis chip, a first physical port and a second physical port; The wireless radio frequency module is used for receiving radio frequency signals from the low-altitude terminal, generating IQ sampling data through processing, and sending the IQ sampling data to the baseband processing module; the baseband processing module is used for extracting field data of industrial Internet identification from the IQ sampling data; The communication data processing module is used for carrying out hash matching on field data of the industrial Internet identifier, distinguishing low-altitude communication data from non-low-altitude communication data, and packaging the low-altitude communication data analyzed by the identifier analysis chip into a Lightweight Transmission Protocol (LTP) frame; the identification analysis chip supports industrial Internet identification analysis and is used for analyzing equipment information of the low-altitude terminal; the first physical port is configured to transmit non-low-altitude communication data to a Distributed Unit (DU)/Centralized Unit (CU) via an enhanced universal public radio interface protocol (eCPRI) protocol; the second physical port is to transmit Lightweight Transport Protocol (LTP) frames to a multi-access edge computing (MEC) node.
2. The system of claim 1, wherein the communication data processing module employs a Field Programmable Gate Array (FPGA) supporting bi-directional conversion of an enhanced universal public radio interface protocol (eCPRI) protocol with a Lightweight Transport Protocol (LTP).
3. The system according to claim 2, wherein: the multi-access edge computing (MEC) node comprises a Lightweight Transport Protocol (LTP) stack module and a low-altitude communication data edge processing platform; the multiple access edge computing (MEC) node is in bidirectional communication with at least one Active Antenna Unit (AAU); The Lightweight Transport Protocol (LTP) stack module is used for analyzing a Lightweight Transport Protocol (LTP) frame, verifying the integrity of a check field, and extracting a control channel field and a data channel field; The low-altitude communication data edge processing platform is used for monitoring the bandwidth utilization rate of a second physical port of an Active Antenna Unit (AAU), generating a rate adjustment instruction and carrying out localization processing on low-altitude communication data.
4. The system of claim 3, wherein the system further comprises a controller configured to control the controller, The Lightweight Transport Protocol (LTP) frame sequentially comprises a frame header, a control channel field, a data channel field and a check field from left to right; The frame header contains a2 bit priority field and a 10 bit frame length field; The control channel field is used for transmitting a rate adjustment instruction and link state feedback information; The data channel field is used for transmitting low-altitude service data; the check field is used to verify frame integrity.
5. A method for low-altitude communication data transmission, applied to the system for low-altitude communication data transmission according to claim 4, characterized in that it is an uplink transmission method, comprising the steps of: S100A, after receiving a radio frequency signal from a low-altitude terminal, a wireless radio frequency module generates IQ sampling data through processing and sends the IQ sampling data to a baseband processing module; S150A, the baseband processing module extracts field data of an industrial Internet identifier from the IQ sampling data and sends the field data to the communication data processing module; S200A, the communication data processing module carries out hash matching on field data of the industrial Internet identification to distinguish low-altitude communication data from non-low-altitude communication data; And S300A, the communication data processing module transmits the Lightweight Transport Protocol (LTP) frame to a multi-access edge computing (MEC) node through a second physical port, and uploads non-low-altitude communication data to a 5G or 6G core network through a first physical port.
6. The method of claim 5, wherein encapsulating a Lightweight Transport Protocol (LTP) frame based on the low-altitude communication data in step S200A includes sending low-altitude communication data to the tag resolution chip, receiving low-altitude communication data resolved by the tag resolution chip, and encapsulating the low-altitude communication data resolved by the tag resolution chip into a Lightweight Transport Protocol (LTP) frame.
7. The method of claim 5, wherein in step S200A, the frame header of the LTP frame includes a2 bit priority field and a 10 bit frame length field, wherein the 2 bit priority field of the emergency control data is 11, the 2 bit priority field of the drone flight control data is 10, and the 2 bit priority field of the surveillance video data is 01.
8. The method of claim 5, further comprising the step of: S800A, a low-altitude communication data edge processing platform of the multi-access edge computing (MEC) node monitors the bandwidth utilization rate of the second physical port of the Active Antenna Unit (AAU) in real time; When the bandwidth utilization rate is more than or equal to an overload threshold value, the low-altitude communication data edge processing platform generates a rate down instruction, and the rate down instruction is sent to the communication data processing module of the Active Antenna Unit (AAU) through a control channel field of a Lightweight Transport Protocol (LTP) frame; When the bandwidth utilization rate is less than or equal to an idle threshold value, the low-altitude communication data edge processing platform generates a rate up-regulation instruction, and the rate up-regulation instruction is sent to the communication data processing module through a control channel field of a Lightweight Transport Protocol (LTP) frame; After the communication data processing module analyzes the rate instruction, the rate switching is realized, and a rate update confirmation instruction is returned to the multi-access edge computing (MEC) section through a control channel after the switching.
9. A method of low-altitude communication data applied to the system for low-altitude communication data transmission according to claim 4, characterized in that the method is a downlink transmission method comprising the steps of: S100B, a baseband processing module of the Active Antenna Unit (AAU) receives enhanced universal public radio interface protocol (eCPRI) data through a first physical port; S200B, the multi-access edge computing (MEC) node packages a Lightweight Transport Protocol (LTP) frame containing a high-priority identifier and sends the Lightweight Transport Protocol (LTP) frame to a communication data processing module of the Active Antenna Unit (AAU) through a second physical port of the Active Antenna Unit (AAU); S300B, after the communication data processing module of the Active Antenna Unit (AAU) verifies the integrity of a Lightweight Transmission Protocol (LTP) frame, forwarding the data to a baseband processing module, wherein the baseband processing module gathers two paths of data according to the 'URLLC priority' principle, namely the Lightweight Transmission Protocol (LTP) frame and the enhanced universal public radio interface protocol (eCPRI) data; S400B, the baseband processing module of the Active Antenna Unit (AAU) carries out channel coding and modulation on the two paths of converged data to generate IQ sampling data; S500B, the IQ sampling data is transmitted to a low-altitude terminal after being processed by the wireless radio frequency module of the Active Antenna Unit (AAU).
10. The method of claim 9, wherein in step S300B, the baseband processing module converts a Lightweight Transport Protocol (LTP) frame to conform to a 5G or 6G communication standard and stores the converted frame in a dedicated low-latency buffer, labeled URLLC level.

Description

System and method for low-altitude communication data transmission Technical Field The present application relates to the field of communications technologies, and in particular, to a system and method for low-altitude communication data transmission. Background In the conventional 5G communication architecture, an Active Antenna Unit (AAU) only performs a radio frequency signal transceiving function, all baseband signals are required to be transmitted to a Distributed Unit (DU)/Centralized Unit (CU) for processing through an enhanced universal public radio interface protocol (eCPRI) link, and all data are required to be transmitted and processed through a core network. The traditional 5G communication architecture has two main core problems that on one hand, a core network needs to process all data, so that the data processing burden of the core network is heavy, on the other hand, the low-altitude communication data and the non-low-altitude communication data (traditional public network data) are transmitted in a mixed mode, and the diversion can be realized only after the 5G core network is used, so that the transmission delay of the low-altitude communication data is remarkably increased, the diversion precision is reduced, and the low-latency transmission of the data cannot be guaranteed in the application scenes of the low-altitude economic industries such as unmanned aerial vehicle service and the like. In 5G or 6G low-altitude communication scene application scenes with high requirements on transmission delay and reliability such as unmanned aerial vehicle logistics, low-altitude emergency rescue and the like, the requirements of low-altitude communication data on the transmission delay are usually controlled at millisecond level, and although the traditional 5G communication architecture can realize data distribution, the real-time performance and reliability requirements of the low-altitude communication application scenes cannot be met by adopting the traditional 5G communication architecture to conduct data distribution in the scenes such as unmanned aerial vehicle logistics, low-altitude emergency rescue and the like. Therefore, a system and a method for low-altitude communication data transmission capable of reducing time delay and improving shunt accuracy in the low-altitude communication data transmission process are needed. Disclosure of Invention The application aims at providing a system and a method for low-altitude communication data transmission, which realize real-time distribution of low-altitude communication data and non-low-altitude communication data by adding a special physical port and a modification processing module in an Active Antenna Unit (AAU), optimize transmission efficiency by adopting a Lightweight Transmission Protocol (LTP), and solve the technical problems of high low-altitude communication data time delay and low distribution precision in the traditional 5G communication architecture. In one aspect, the present application discloses a system for low-altitude communication data transmission, the system comprising an Active Antenna Unit (AAU) and a multiple access edge computing (MEC) node; the Active Antenna Unit (AAU) comprises a wireless radio frequency module, a baseband processing module, a communication data processing module, an identification analysis chip, a first physical port and a second physical port; The wireless radio frequency module is used for receiving radio frequency signals from the low-altitude terminal, generating IQ sampling data through processing, and sending the IQ sampling data to the baseband processing module; the baseband processing module is used for extracting field data of industrial Internet identification from the IQ sampling data; The communication data processing module is used for carrying out hash matching on field data of the industrial Internet identifier, distinguishing low-altitude communication data from non-low-altitude communication data, and packaging the low-altitude communication data analyzed by the identifier analysis chip into a Lightweight Transmission Protocol (LTP) frame; the identification analysis chip supports industrial Internet identification analysis and is used for analyzing equipment information of the low-altitude terminal; the first physical port is configured to transmit non-low-altitude communication data to a Distributed Unit (DU)/Centralized Unit (CU) via an enhanced universal public radio interface protocol (eCPRI) protocol; the second physical port is to transmit Lightweight Transport Protocol (LTP) frames to a multi-access edge computing (MEC) node. In one particular embodiment, the communication data processing module employs a Field Programmable Gate Array (FPGA) supporting bi-directional conversion of an enhanced universal public radio interface protocol (eCPRI) protocol with a Lightweight Transport Protocol (LTP). In one embodiment, the multi-access edge computing (MEC) node comprises a Lig