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A multi-access method for aircraft cooperative information network

A technology of information network and access method, applied in the field of wireless self-organizing network, which can solve the problems that the user access process is not yet clear, does not involve the transmission target airspace prediction function, and has not been proposed, so as to simplify the installation of multi-antenna aircraft information broadcasting process, low-latency information transmission capability, and possible effects of reducing signal collisions

Active Publication Date: 2021-08-10
CHINA ACAD OF LAUNCH VEHICLE TECH
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AI Technical Summary

Problems solved by technology

[0005] (1) This access method does not propose an antenna-related airspace resource usage plan, but is only a multi-user access method combining time domain and frequency domain. Resource allocation leads to the need for sequential transmission or broadcast transmission in different antennas when transmitting information, which wastes information transmission resources and prolongs the delay of specific information transmission
[0006] (2) This method does not involve the airspace prediction function of the transmission target. When different antennas of multiple platforms work at the same time, the probability of signal transmission collision increases, which limits the system capacity
[0007] (3) The access process of different users through time-frequency domain composite patterns is not yet clear, and the information processing method during information transmission is not mentioned

Method used

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  • A multi-access method for aircraft cooperative information network
  • A multi-access method for aircraft cooperative information network
  • A multi-access method for aircraft cooperative information network

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Embodiment Construction

[0053] Aiming at the deficiencies of the prior art, the invention proposes a multi-access access method for aircraft cooperative information network. This access method discretizes the traditional information transmission frame, realizes the cooperative work of each node in the aircraft cooperative information network through the directional transmission at different frequency points and at different times, and realizes efficient, reliable, Covert access.

[0054] Such as figure 1 As shown, the processing flow of a multi-access method for aircraft cooperative information network proposed by the present invention, the specific processing steps are as follows:

[0055]1) The system transmission frame structure is as follows figure 1 As shown in , the transmission frame length must meet the following conditions:

[0056]

[0057] Among them, λ is the framing efficiency λ=S / L, S is the required transmission information length, L is the frame length after framing, ω is the ro...

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Abstract

A method for multi-access access to an aircraft collaborative information network, including a time-frequency airspace joint signal transmission system, a transmission target airspace determination method, and a specific access process; the time-frequency airspace joint signal transmission system determines the high dynamic environment between nodes The frame structure is transmitted, and the time-frequency-space joint transmission of the transmission frame is realized by means of discrete pulses. The transmission target airspace determination method is used by the sending node to determine the antenna coverage area where the receiving node is located during a specific transmission process, and then supports the sending node to determine the antenna usage scheme when transmitting the specific information. The node access process is used to determine the access process during the establishment and operation of the collaborative information network, specific node information transmission, and network maintenance. The multiple access method can meet the requirements for establishment of a collaborative information network with increasing number of inter-station cooperative work nodes moving at high speed in the air / space and increasingly complex task modes, and can effectively reduce the simultaneous access delay of multiple nodes.

Description

technical field [0001] The invention relates to a multi-access method for an aircraft cooperative information network, which belongs to the technical field of wireless ad hoc networks, in particular to a multi-access method for a wireless ad-hoc network between outer space and high-speed moving objects in the air. Background technique [0002] Multiple access technology is a key technology for building wireless ad hoc networks, and it is used to solve the problem of efficient and coordinated use of transmission resources by each node in the wireless ad hoc network. Realize the functions of marking the source of transmission information and avoiding transmission resource conflicts. [0003] Traditional access methods can be roughly divided into access methods such as frequency division, time division, and code division. There are problems such as fixed delay and difficult time synchronization; the code division multiple access method has problems such as the near-far effect ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/40H04W28/02H04W28/06H04W84/18H04B1/713H04B1/7176H04B7/185
CPCH04B1/713H04B1/7176H04B7/18506H04W28/0205H04W28/0231H04W28/065H04W84/18H04W4/40
Inventor 夏耘李喆王倩邓志均岑小锋姚国伟张凤王华常诚仇公望石铄
Owner CHINA ACAD OF LAUNCH VEHICLE TECH
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