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Low-orbit satellite communication switching method

A satellite communication and satellite technology, applied in the field of satellite communication, can solve the problem of unable to achieve fast and uninterrupted seamless switching of software and hardware, and achieve the effect of smooth switching and ensuring smooth progress.

Active Publication Date: 2020-12-08
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Most of the existing low-orbit satellite communication switching methods use hard switching or soft switching, which cannot achieve fast and uninterrupted seamless switching of soft and hard

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Embodiment Construction

[0028] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0029] see Figure 1 ~ Figure 2 , when the user terminal receives pilot signals from the accessed beam and other beams, if the signal strength of the access ...

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Abstract

The invention relates to a low-orbit satellite communication switching method, and belongs to the field of satellite communication. According to the method, by measuring the signal intensity of a pilot signal emitted by a satellite, a user terminal judges whether switching is carried out or not, and inter-satellite switching or inter-beam switching and the whole signaling transmission of the switching process are determined according to the source of the pilot signal. The method further comprises the following steps that: the source satellite sends a switching requirement report to the networkcontrol center, wherein the switching requirement report is used for switching the session of the user terminal from the source satellite to the target satellite; and the network control center receives a switching request reply report from the target satellite, wherein the switching request reply report is used for indicating that the target satellite has a transmitting frequency and a receivingfrequency of an idle channel. According to the invention, smooth switching of the user equipment in the low-orbit satellite communication system can be realized, and smooth communication is guaranteed.

Description

technical field [0001] The invention belongs to the field of satellite communication, and relates to a method for switching between a user terminal (UE) and a low-orbit satellite. Background technique [0002] The low-orbit satellite communication system is the development trend of wireless communication in the future. In recent years, many companies are vigorously developing satellite Internet constellations to provide Internet access services for the world by building satellite constellations composed of LEO satellites. [0003] Due to the characteristics of fast moving speed and small coverage of a single LEO satellite, switching between satellites is essential to ensure the stability of ground communication. Handover includes soft handover (Soft Handover, SH) and hard handover (Hard Handover, HH). In soft handover, if a mobile terminal is equipped with multiple network interfaces, it can use one of the interfaces to obtain a connection through the new network access poi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0408H04B10/118H04W36/00
CPCH04B10/118H04B7/0408H04W36/0005H04W36/00837
Inventor 陈前斌曹晖唐伦梁承超
Owner CHONGQING UNIV OF POSTS & TELECOMM