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User access method and device for minimizing transmission delay in air-space-ground fusion network

A technology of integrated network and transmission delay, applied in the field of air-space-ground integrated network, can solve problems such as communication link interruption, and achieve the effect of low algorithm complexity

Active Publication Date: 2022-07-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem existing in the prior art that the ground user-air platform communication link in the space-space-ground fusion network may be interrupted, this application provides a user access method and device for minimizing transmission delay in the space-space-ground fusion network

Method used

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  • User access method and device for minimizing transmission delay in air-space-ground fusion network
  • User access method and device for minimizing transmission delay in air-space-ground fusion network
  • User access method and device for minimizing transmission delay in air-space-ground fusion network

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Embodiment approach 1

[0126] Embodiment 1: refer to figure 1 This embodiment will be described. The user access method for minimizing transmission delay in an air-space-ground fusion network described in this embodiment includes the following steps:

[0127] Step 1: According to the network topology, transmit power, fading loss, antenna gain of the transceiver end and other parameters of the air-space-ground fusion network at time t, obtain the signal receiving form of the aircraft receiving end and calculate the receiving signal-to-noise ratio of the aircraft end; at the same time, obtain the signal of the satellite receiving end. Receive the form and calculate the received signal-to-noise ratio at the satellite end;

[0128] Step 2: According to the channel conditions and the signal-to-noise ratio threshold value of the receiver, the probability density function of the Rice channel coefficient is used to calculate the interruption probability of the ground user-aircraft communication link and t...

Embodiment approach 2

[0182] Embodiment 2: Refer to the attached figure 1 This embodiment is described. This embodiment provides a user access device that minimizes transmission delay in an air-to-air fusion network, including:

[0183] The device is used to obtain the signal receiving form of the aircraft receiving end and calculate the receiving signal-to-noise ratio of the aircraft end according to the network topology, transmit power, fading loss, antenna gain of the transceiver at time t and other parameters of the air-to-air fusion network; at the same time, the device can also Obtain the signal receiving form of the satellite receiving end and calculate the receiving signal-to-noise ratio of the satellite end;

[0184] A device for calculating the interruption probability of the ground user-aircraft communication link and the interruption probability of the ground user-satellite communication link by using the probability density function of the Rice channel coefficient according to the cha...

Embodiment approach 3

[0247] Embodiment 3: This embodiment compares the user access method for minimizing transmission delay in the air-space-ground fusion network described in the present invention with the existing similar methods by means of simulation, and then verifies the present invention and the existing similar technologies. comparative advantages.

[0248] Table 1 shows the parameter settings used in the simulation.

[0249] Table 1 Simulation parameter settings

[0250]

[0251]

[0252] The simulation results in the case of the above simulation parameters are:

[0253] attached Figure 4 A comparison chart of the average delay before and after the aircraft is introduced into the air-air-ground fusion network; for simplicity, only the situation where the aircraft and the satellite are in the communication range of the ground user node at the same time is considered in the simulation. It can be found that when there are only satellites in the network, the average delay is the lar...

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Abstract

A user access method and device for minimizing transmission delay in an air-space-ground fusion network relate to the technical field of air-space-ground fusion networks. At present, the air-space-ground fusion network is used to assist the summary of the data transmission process in remote areas, because the link state is always changing dynamically, resulting in poor reliability of the communication link. The method of the present invention obtains the signal receiving forms of the aircraft and the satellite receiving end respectively, calculates the receiving signal-to-noise ratio of the aircraft end, obtains the interruption probability of the ground user-aircraft and the satellite communication link, and then calculates the data of the user-aircraft and the satellite The average number of packets sent, and the data transmission delay is obtained. When the user faces a variety of air platforms, the user access method aiming at minimizing the transmission delay is planned, and the optimization problem is decomposed into some independent sub-problems. The heuristic user access algorithm proposed by the method obtains the user access result. This method can be widely used in the field of air-space-ground fusion network.

Description

technical field [0001] The present invention relates to the technical field of air-space-ground fusion network, in particular to a user access method for minimizing transmission delay in the air-space-ground fusion network. Background technique [0002] The current mobile communication has developed to the fifth generation, and the effectiveness and reliability of the communication system has developed to an unprecedented new stage. For commercial reasons, mobile network operators prefer to build traditional cellular base stations in densely populated areas. At present, the coverage rate of terrestrial broadband wireless signals is only 10%, data transmission in remote areas is still difficult, and there is still a long way to achieve the goal of seamless communication coverage. [0003] Due to the introduction of satellites, aircraft and other aerial platforms for auxiliary communication, the air-space-ground fusion network greatly expands the communication coverage of tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04L1/18H04W28/08H04W74/02H04W76/10
CPCH04B7/18508H04L1/18H04W28/0975H04W76/10H04W74/02
Inventor 孟维晓陈倩李殊勋李阳
Owner HARBIN INST OF TECH
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