Method and devices for achieving on-board switching in satellite mobile communication system

A technology of satellite mobile communication and implementation method, which is applied in the field of on-board switching implementation, can solve problems such as delay increase and resource waste, and achieve the effects of reducing overhead, reducing transmission delay, improving spectrum efficiency and service experience

Active Publication Date: 2013-11-13
DATANG MOBILE COMM EQUIP CO LTD
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AI Technical Summary

Problems solved by technology

During the entire transmission process, a data packet needs at least 4 wireless transmissions through the ground and the satellite. Taking the geosynchronous orbit satellite GEO as an example, a total delay of 480ms will be caused, and the wireless interface resources will be used 4 times, which will increase the delay. Big and waste of resources

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  • Method and devices for achieving on-board switching in satellite mobile communication system
  • Method and devices for achieving on-board switching in satellite mobile communication system
  • Method and devices for achieving on-board switching in satellite mobile communication system

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Embodiment Construction

[0048]The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0049] As mentioned in the background technology, due to the large propagation distance between the satellite and the ground, it takes a long time for the signal to be received from transmission to reception. Inter-communication also requires data packets to be transmitted back to the core network on the ground, and then forwarded to another user on the satellite. This method wastes satellite frequency resources on the one hand, and also brings greater transmission delay.

[0050] In...

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Abstract

The invention discloses a method and devices for achieving on-board switching in a satellite mobile communication system. According to the technical scheme of the method and the devices, whether the two terminal devices corresponding to a received service request meet on-board switching triggering conditions is determined through the core network device, and if yes, base stations corresponding to the two terminal devices are notified to distribute on-board interaction wireless link resources to the two terminal devices so that the two terminal devices can carry out communication data on-board switching through an on-board interaction wireless link built according to the distribution scheme. Therefore, user data transmission delay is effectively shortened, expenditure for the satellite link resources is reduced, and spectral efficiency and service experience of the satellite communication system are improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and equipment for implementing on-board switching in a satellite mobile communication system. Background technique [0002] In order to utilize the terrestrial mobile communication system, the LTE (Long Term Evolution, Long Term Evolution) system / LTE-A (LTE-Advanced, Advanced LTE) system can be used to deploy a satellite mobile communication system. In the fourth-generation satellite mobile communication system, terminals are required Try to reuse the ground terminal chip design. [0003] In the satellite communication mobile communication system, according to the position of the satellite orbit, it is divided into LEO (Low Earth Orbit, low earth orbit), MEO (Medium Earth Orbit, medium earth orbit) and GEO (Geostationary Earth Orbit, geostationary orbit), different The altitude of the orbital position and the propagation delay to the ground are shown in Table 1. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04W84/06
Inventor 秦飞周海军鲍炜
Owner DATANG MOBILE COMM EQUIP CO LTD
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