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Feed link, user equipment handover method, equipment and device belonging to satellite

A technology for feeder links and user equipment, applied in the direction of synchronization devices, electrical components, radio transmission systems, etc., can solve problems such as service interruptions, achieve the effects of reducing service interruptions, reducing handover delays, and ensuring business continuity

Active Publication Date: 2022-03-29
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, user equipment handover method, equipment and device belonging to satellite
  • Feed link, user equipment handover method, equipment and device belonging to satellite
  • Feed link, user equipment handover method, equipment and device belonging to 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 method, device and device for switching user equipment of a feeder link and a home satellite, including: a source gateway station interacts with a target gateway station, and determines the switching time T and / or the target cell activation time T' , wherein, the switching time T is the time when the old feeder link is disconnected and the new feeder link is established, and the target cell activation time T' is T + the time delta required for the feeder link establishment process ; The source gateway station and the target gateway station initiate feeder link switching at the switching time T, instructing the user equipment to synchronize the target cell at T'. By adopting the invention, the target gateway station can initiate the establishment process of the feeder link to the same satellite, and the service interruption caused by the switchover of the feeder link can be reduced as much as possible. The handover delay is reduced, and the service continuity of the user equipment before and after the handover 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 Patents(China)
IPC IPC(8): H04W36/00H04W74/08
CPCH04W36/0016H04W74/0833H04W36/083H04W36/00837H04W56/001H04B7/18541H04B7/18513
Inventor 孙建成孙韶辉周叶范江胜
Owner DATANG MOBILE COMM EQUIP CO LTD
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