User access method and device for minimizing transmission delay in space-air-ground convergence network
A converged network and transmission delay technology, applied in the field of air-space-ground converged network, can solve problems such as communication link interruption
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Embodiment approach 1
[0126] Implementation Mode 1: Refer to figure 1 This embodiment will be described. A 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 structure, transmission 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 form and calculate the receiving signal-to-noise ratio of the satellite terminal;
[0128] Step 2: According to the channel conditions and the threshold value of the signal-to-noise ratio at the receiving end, the probability density function of the Rice channel coefficient is used to calculate the interruption probability of the ground user...
Embodiment approach 2
[0182] Implementation mode two: refer to the attached figure 1 Describe this implementation mode. This implementation mode provides a user access device that minimizes transmission delay in an air-space-ground integrated network, including:
[0183] A device for obtaining the signal reception form of the aircraft receiving end and calculating the receiving signal-to-noise ratio of the aircraft end according to the network topology, transmission power, fading loss, antenna gain of the receiving end and other parameters of the air-space-ground fusion network at time t; at the same time, the device can also Obtain the signal receiving form of the satellite receiving terminal and calculate the receiving signal-to-noise ratio of the satellite terminal;
[0184] A device for calculating an outage probability of a ground user-aircraft communication link and an outage probability of a ground user-satellite communication link by using a probability density function of the Ricean chann...
Embodiment approach 3
[0247] Embodiment 3: This embodiment uses simulation to compare the user access method that minimizes the transmission delay in the air-space-ground fusion network described in the present invention with the existing similar methods, 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] The simulation results in the case of the above simulation parameters are:
[0252] attached Figure 4 It is a comparison chart of the average delay before and after the introduction of the aircraft in the air-space-ground fusion network; for simplicity, only the situation that the aircraft and the satellite are within 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 la...
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