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A method for synchronizing multiple gateways

A gateway station and synchronization signal technology, applied in the field of satellite communication, can solve problems such as complex implementation methods, achieve the effect of meeting accuracy requirements, reducing satellite load, and ensuring normal operation

Active Publication Date: 2019-10-29
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the methods in the prior art require the satellite to send a synchronization signal to the gateway station, or design a main gateway station in the gateway station to send the synchronization signal, and the implementation method is relatively complicated

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  • A method for synchronizing multiple gateways
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  • A method for synchronizing multiple gateways

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Embodiment Construction

[0046] In order to make it easier for those skilled in the art to understand the technical solution of this patent, and at the same time, in order to make the technical purpose, technical solution and beneficial effect of this patent clearer, and to fully support the protection scope of the claims, the following is a specific case in the form of this patent. The technical solution of the patent makes further and more detailed descriptions.

[0047] A method for synchronizing multiple gateway stations, the principle of which is as follows figure 1 As shown, including a satellite and a plurality of gateway stations, the synchronization method includes the following steps:

[0048] (1) The gateway station n sends the timing correction signal TXn_GTR signal to the satellite C-C transponder, and receives the RXn_GTR signal transmitted back by the satellite; in addition, it also sends the frequency correction signal TXn_GFR signal to the satellite S-C transponder, and receives the R...

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Abstract

The invention discloses a multi-gateway synchronization method, which belongs to the technical field of satellite communication. The multi-gateway stations of the present invention are all synchronized to the Beidou system, without the need for the main gateway station to send a synchronization signal, mainly the timing offset and frequency offset are jointly calculated by the timing correction signal and the frequency correction signal of the gateway station, and the Make compensation. The feature of the present invention is that the synchronization scheme is aimed at the scenario where the satellite does not send any synchronization reference signal, and multiple gateway stations realize mutual synchronization through the inter-station synchronization reference signal, eliminating the timing deviation and The frequency deviation can meet the signal synchronization accuracy requirements among multi-gateway stations of the satellite mobile communication system and ensure the normal operation of the system, which is an important improvement to the existing technology.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a multi-gateway synchronization method. Background technique [0002] Most geosynchronous satellite mobile communication systems adopt the TDMA / FDMA system, so the synchronization of frequency and time is crucial to the operation of the entire system. On the one hand, coherent demodulation requires very high frequency stability and accuracy; on the other hand, the air interface signal is defined by frequency and time slot, and the synchronization of frequency and time is the premise to ensure that the transmitted signal enters the correct frequency and time slot condition. [0003] The ground segment of the satellite system includes multiple gateway stations working at the same time. It is required that the transmitted signals of multiple gateway stations are strictly aligned in time at the satellite receiving antenna, and the carrier frequency strictly conforms ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04J3/06
CPCH04B7/18582H04J3/0635
Inventor 王力男张庆业王永超
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP