Switching method of a satellite mobile terminal based on a beam hopping scene

A mobile terminal and beam-hopping technology, which is applied in the field of satellite communication, can solve the problems of high handover failure rate of high-speed terminals, no consideration of speed factors, and no consideration of location factors in the algorithm

Active Publication Date: 2021-11-16
NANJING UNIV OF POSTS & TELECOMM +1
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Problems solved by technology

The handover mechanism based on geographic location does not consider the speed factor, and follows the principle of first-come-first-handover, which has great limitations; the hard handover algorithm based on received signal streng...

Method used

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  • Switching method of a satellite mobile terminal based on a beam hopping scene
  • Switching method of a satellite mobile terminal based on a beam hopping scene
  • Switching method of a satellite mobile terminal based on a beam hopping scene

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Embodiment Construction

[0056] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0057] In one embodiment, such as figure 1 As shown, a handover method based on a satellite mobile terminal in a beam-hopping scenario is provided, including the following steps:

[0058] Step 1: Obtain the channel holding time T of the terminal hold ;

[0059] Step 2: Through the random distribution of the initial moment of the terminal, analyze the average channel holding time of the new call of the terminal and switch call channel hold time

[0060] Step 3: Terminals are randomly distributed in each cluster, and the arrival rate of switching requests and new conn...

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Abstract

The invention relates to a switching method of a satellite mobile terminal based on a beam hopping scene. The method comprises the following steps: acquiring channel retention time of a terminal, analyzing new call average channel retention time and switching call channel retention time of the terminal, randomly distributing the terminal in each cluster, and obtaining a new connection request arrival rate when switching requests and new connection request arrival rates are independent Poisson processes, analyzing the switching request arrival rate, according to the switching request arrival rate and the channel retention time, analyzing the average connection time of the terminal under the wave beam, and according to a probability density function, analyzing to obtain a new connection blocking rate and the probability that all time slots are occupied; obtaining a switching failure rate according to the probability that the time slot is not released within the maximum queuing time and the probability that the terminal keeps active connection all the time in the overlapping area; and when the switching failure rate is smaller than or equal to the threshold, if convergence occurs, outputting the switching failure rate and the new connection blocking rate, so that the switching failure rate of the high-speed terminal is reduced.

Description

technical field [0001] The present application relates to the technical field of satellite communication, in particular to a handover method of a satellite mobile terminal based on a beam-hopping scenario. Background technique [0002] The basic idea of ​​beam-hopping technology is to use time-slicing technology. In the same time segment, not all beam positions are lit up, but only a part of the beam positions are lit up. Compared with the traditional multi-beam satellite system, this new idea can better meet the application scenarios with unbalanced business requirements. On the basis of this technology, in order to ensure the continuity of communication between beam positions for high-speed mobile terminals, it is particularly important to study feasible beam switching algorithms. [0003] Currently commonly used beam switching technologies are basically in multi-beam scenarios, including hard switching algorithms based on received signal strength, and switching mechanism...

Claims

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Application Information

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IPC IPC(8): H04W16/28H04W24/02H04B7/185
CPCH04W16/28H04W24/02H04B7/18519
Inventor 张晨潘宏宇张更新
Owner NANJING UNIV OF POSTS & TELECOMM
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