Feed link and user equipment switching method, equipment and apparatus of home satellite

A technology for feeder links and satellites, applied in the directions of synchronization devices, electrical components, radio transmission systems, etc., can solve problems such as service interruptions, and achieve the effect of reducing service interruptions

Active Publication Date: 2021-01-19
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method, device and device for switching feeder links and user equipment belonging to satellites, which are used to solve the problem of service interruption caused by switching feeder links between two gateway stations

Method used

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  • Feed link and user equipment switching method, equipment and apparatus of home satellite
  • Feed link and user equipment switching method, equipment and apparatus of home satellite
  • Feed link and user equipment switching method, equipment and apparatus of home satellite

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Embodiment Construction

[0081] The inventor noticed during the invention that:

[0082] Satellite Internet has the advantages of wide coverage and little impact from natural disasters and physical attacks. It can be deeply integrated with the terrestrial mobile communication network (5G) network to make up for the lack of coverage of the terrestrial mobile network, and form a converged network system with complementary advantages, close integration, and three-dimensional layering with the terrestrial network to realize information transmission and communication on a global scale. interact.

[0083] Satellite Internet is divided into geostationary satellites, medium-orbit satellites, and low-orbit satellites; the distance of low-orbit satellites is characterized by being relatively close to the ground, and the communication delay between the ground terminal and the ground terminal is moderate. Features such as limited power.

[0084] A basic assumption of a traditional mobile communication access ne...

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Abstract

The invention discloses a feed link, and a user equipment switching method, device and apparatus of a home satellite. The method comprises the following steps that a source gateway station interacts with a target gateway station; a switching moment T and / or a target cell activation time T' are determined, wherein the switching moment T is a moment when an old feed link is disconnected and a new feed link is established and initiated, and the target cell activation time T' is time delta required for a T + feed link establishment process; the source gateway station and the target gateway stationinitiate feed link switching at the switching moment T to indicate the user equipment to synchronize the target cell at T '. By adopting the method, the target gateway station can initiate the establishment process of the feed link to the same satellite, and service interruption caused by feed link switching is reduced as much as possible. Therefore, the switching time delay is shortened, and theservice continuity of the user equipment before and after switching is better guaranteed.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a feeder link, a user equipment switching method, equipment and device belonging to a satellite. Background technique [0002] The current scenario is that a low-orbit satellite can only connect to one ground gateway at the same time. In this scenario, when the satellite is only connected to one ground gateway at any time, if a feeder link switch occurs, it is necessary to cut off the connection with the original ground gateway first, and then connect to the new gateway. figure 1 It is a schematic diagram of the feeder link switching scenario at time T1, figure 2 It is a schematic diagram of the feeder link switching scenario at time T2, such as figure 1 , figure 2 As shown, before and after a certain switching threshold, the satellite is only connected to one gateway station respectively, the satellite is only connected to the gateway station 1 at the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W74/08
CPCH04W36/0016H04W74/0833H04W36/08H04W56/001H04B7/18541H04W36/00837H04B7/18513
Inventor 孙建成孙韶辉周叶范江胜
Owner DATANG MOBILE COMM EQUIP CO LTD
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