A low-orbit satellite-oriented access and handover method for high-speed terminals

A low-orbit satellite and terminal technology, which is applied in the field of satellite communications and can solve problems such as the inapplicability of high-speed terminals

Active Publication Date: 2021-06-04
WUHAN UNIV +1
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Problems solved by technology

[0010] In order to solve the problem of the inapplicability of the traditional satellite handover strategy to high-speed terminals, the present invention proposes an access and handover strategy based on the characteristics of high-speed terminals, fully utilizes the characteristics of channel resource usage in different regions, and ensures The service level of users improves the utilization rate of satellite channel resources

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  • A low-orbit satellite-oriented access and handover method for high-speed terminals
  • A low-orbit satellite-oriented access and handover method for high-speed terminals
  • A low-orbit satellite-oriented access and handover method for high-speed terminals

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Embodiment Construction

[0054] The present invention first obtains the mobile model and ground coverage model of the satellite according to the basic parameter configuration of the low-orbit satellite constellation, and completes the corresponding configuration on the STK, then classifies the high-speed terminals, configures the user mobile model for different terminal types, and configures the STK Export the mobile model to QualNet to complete the corresponding scene configuration and protocol stack configuration. During the high-speed terminal access process, perform data a priori matching to obtain the terminal type and running track, distinguish user calls as new calls and handover calls, and perform priority design. Carry out channel resource assessment on the terminal location and track area, and complete the access of new calls and handover of handover calls according to the assessment results.

[0055] Step 1: Obtain the high-speed terminal type and running trajectory from the data a priori. ...

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Abstract

The invention proposes a low-orbit satellite-oriented access and switching method for high-speed terminals, which divides user calls into new calls and switching calls, classifies and analyzes the characteristics of different high-speed terminals, defines the priority of high-speed terminals, and uses STK (Satellite Tool Kit) configure the low-orbit satellite system and high-speed terminal mobile model, simulate and calculate the beam coverage time of the high-speed terminal visible satellite at a certain moment according to the mobile model, and export the mobile coverage information configured by STK to QualNet, and complete the scene in QualNet and protocol stack configuration. This method can make good use of the position and trajectory characteristics of different types of high-speed terminals (high-speed rail, aircraft, high-speed aircraft, and low-orbit satellites) to implement targeted access and handover methods, and can ensure better service quality for satellite systems and channel resource utilization.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and in particular relates to a low-orbit satellite-oriented access and switching method for high-speed terminals. Background technique [0002] With the advent of the 5G era and the proposal of an air-space-ground-sea integrated network communication system, the influence of satellite communication is gradually expanding. The low-orbit satellite communication system can achieve seamless coverage on the ground, and end users in the same satellite coverage area can achieve data communication only through one-hop relay forwarding of the satellite. Satellite communication is not limited by geographical environment. It has strong anti-damage ability and high stability of the system. It can guarantee reliable communication in dealing with geological disasters such as earthquakes and mudslides. It can realize integrated communication with the ground cellular mobile network and provide se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04W36/32H04W84/06
CPCH04B7/18539H04B7/18541H04W36/32H04W84/06
Inventor 黄家信刘允宋瑞良郭蕾卢宁宁吴静
Owner WUHAN UNIV
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