A multi-access method for aircraft cooperative information network

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 ...

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

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