Channel Switching Method for High Dynamic Terminals in LEO Constellation Satellite Communication System
A technology of satellite communication system and low-orbit constellation, which is applied in the field of satellite communication, can solve the problems that the satellite communication switching process cannot be completed and the switching time is short, and achieve the effect of quickly realizing the switching process, short switching time, and realizing communication services
Active Publication Date: 2022-06-24
NANJING PANDA ELECTRONICS +1
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Problems solved by technology
In high dynamic scenarios, the maximum service time of a single beam is at the second level, and the time for handover is shorter, and the complex satellite communication handover process cannot be completed, so a simpler and faster handover solution needs to be designed
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Embodiment Construction
[0029] Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0030] like image 3 As shown, the present invention designs a channel switching method for a high-dynamic terminal in a low-orbit constellation satellite communication system. The method is based on a low-orbit constellation satellite communication system. sports. The motion of high-speed motion carriers usually has regularity, and is generally a pre-planned motion route. Furthermore, the motion route of such carriers is at high altitude or at the edge of outer space, without signal occlusion, and the space environment is very good, and data is generally used. For the backhaul channel, a method of resource pre-allocation can be used to establish a virtual communication link, pre-configure system resources, and serve highly dynamic terminals. The method of the present invention specifically comprises the following steps:
[0031] Step 1. The high dynamic termin...
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The invention discloses a channel switching method for a high dynamic terminal in a low-orbit constellation satellite communication system, comprising: the high dynamic terminal sends the movement route planning to the operation control center in advance; the operation control center formulates a resource allocation plan according to the movement route planning combined with system resources : Divide the movement route into several sections; according to the movement time, the operation control center allocates corresponding system resources for each movement route as a virtual link; sends the resource allocation plan to the gateway station system and high dynamic terminal; the gateway station According to the resource allocation plan, the system pre-allocates resources in combination with the currently executed tasks, and reserves the return channel; the high-dynamic terminal autonomously captures the subsequent low-orbit satellites at the moving position according to the resource allocation plan, and transmits them at the gateway station system. Send the pre-corrected user link signal on the reserved backhaul channel; the gateway station system takes back the previous backhaul channel. The invention can realize the communication service, and quickly realize the switching process of the satellite communication.
Description
technical field [0001] The invention relates to a channel switching method of a high dynamic terminal in a low-orbit constellation satellite communication system, and belongs to the technical field of satellite communication. Background technique [0002] The low-orbit constellation satellite communication system is a satellite communication system that transmits signals through a low-orbit constellation. At present, the low-orbit constellation satellite communication systems under construction or completed in the world mainly include starlink, O3B, OneWeb, Telesat, etc. In my country, there are mainly systems such as Hongyun and Hongyan. Generally speaking, the low-orbit constellation satellite communication system consists of three parts: the space segment, the ground segment, and the application segment. figure 1 shown. The space segment is composed of low-orbit satellite constellations; the ground segment is mainly composed of an operation control center, a global oper...
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IPC IPC(8): H04B7/185
CPCH04B7/18513H04B7/18519
Inventor 鲍峰刘剑锋丁亚南
Owner NANJING PANDA ELECTRONICS