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Method and apparatus for inter-satellite handovers in low-earth orbit (LEO) satellite systems

A satellite constellation, satellite technology, applied in transmission systems, radio transmission systems, transmission monitoring and other directions, can solve problems such as capacity degradation

Active Publication Date: 2018-06-08
QUALCOMM INC
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  • Application Information

AI Technical Summary

Problems solved by technology

Frequent inter-satellite handoffs can incur processing costs on network resources
On the other hand, if the frequency of inter-satellite handover is arbitrarily limited, the system performance may be adversely affected due to the degradation of the carrier-to-interference-plus-noise ratio (CINR), which may lead to the degradation of capacity

Method used

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  • Method and apparatus for inter-satellite handovers in low-earth orbit (LEO) satellite systems
  • Method and apparatus for inter-satellite handovers in low-earth orbit (LEO) satellite systems
  • Method and apparatus for inter-satellite handovers in low-earth orbit (LEO) satellite systems

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Embodiment Construction

[0034] In non-geosynchronous satellite communication systems such as Low Earth Orbit (LEO) satellite communication systems, a large number of satellites are usually required to form a constellation to allow ground stations including gateways and user terminals (UTs) to maintain communication (even if the satellites in the constellation Each individual satellite is in a non-fixed position relative to these ground stations at different time instants). In some implementations, to reduce the cost of manufacturing each satellite in a LEO satellite communication system, each satellite can act as a bent pipe repeater or repeater (ie, without its own data processing). In these implementations, the gateway and / or UT can manage the handover of communications from one satellite to another.

[0035] In other implementations, each satellite may be equipped with one or more processors and / or one or more memories to process data rather than simply act as bent-pipe repeaters or transponders. ...

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Abstract

Methods and apparatuses for managing inter-satellite handovers are provided to allow a user terminal to reduce the frequency of handovers while maintaining a sufficiently high system capacity in a non-geosynchronous satellite communication system. The method and apparatus for managing inter-satellite handovers may be implemented in a gateway, in infrastructure connected to a gateway, in a user terminal, or in a satellite.

Description

[0001] Cross References to Related Applications [0002] This patent application claims the benefit of U.S. Provisional Application No. 62 / 241,002, filed October 13, 2015, entitled "Method And Apparatus For Inter-Satellite Handovers In Low-Earth Orbit (LEO) Satellite Systems," and filed October 14, 2015 The benefit of U.S. Provisional Application No. 62 / 241,622, entitled "Method And Apparatus For Inter-Satellite Handovers In Low-Earth Orbit (LEO) Satellite Systems," filed on , both of which have been assigned to the assignee of the present application , are hereby expressly incorporated by reference in their entirety. technical field [0003] Various aspects described herein relate to satellite communications, and in particular, various aspects described herein relate to inter-satellite handover in a low earth orbit (LEO) satellite communication system. Background technique [0004] A conventional satellite-based communication system includes a gateway and one or more satel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04B7/195H04W36/24H04W36/30H04B17/336H04W84/06
CPCH04W84/06H04B7/18541H04B7/195H04W36/008375H04W36/302H04B17/336H04W36/30
Inventor S·S·阿什拉斐S·纳加拉贾D·瓦西洛夫斯基张丹J·德特曼G·W·马什J·马
Owner QUALCOMM INC
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