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Auxiliary synchronization channel transmission method covering multi-beam satellite LTE in the whole area

A channel transmission and auxiliary synchronization technology, applied in the direction of multi-frequency code system, baseband system components, etc., can solve problems such as mutual interference and failure to successfully realize cell search, and achieve the effects of avoiding interference, fast cell search, and realizing cell search

Active Publication Date: 2017-02-22
SOUTHEAST UNIV
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Problems solved by technology

The multi-beam S-LTE system of the same frequency network uses a large antenna array to generate multiple beams on the satellite, and forms multiple cells after reaching the ground. The cells of satellites on different orbits may overlap each other. With the same S-SCH time-frequency structure and subcarrier mapping method, the S-SCHs of satellites in different orbits will interfere with each other, and cell search cannot be successfully realized

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  • Auxiliary synchronization channel transmission method covering multi-beam satellite LTE in the whole area
  • Auxiliary synchronization channel transmission method covering multi-beam satellite LTE in the whole area
  • Auxiliary synchronization channel transmission method covering multi-beam satellite LTE in the whole area

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Embodiment Construction

[0047] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0048] An auxiliary synchronization channel transmission method covering multi-beam satellite LTE in the whole area, including the time-frequency structure of S-SCH and the subcarrier mapping method of SSS sequence in frequency domain.

[0049] Taking time slot 0 as an example, firstly, generate the 62-point frequency-domain SSS sequences d of satellite 1 and satellite 2 according to the generation formula of frequency-domain SSS sequences 1 (n) and d 2 (n).

[0050] Then, according to the time-...

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Abstract

The invention discloses an auxiliary synchronizing channel transmission method of full-area multi-beam satellite LTE. The method includes a time frequency structure of an S-SCH and a sub-carrier mapping mode of a frequency domain SSS sequence, sixth and seventh OFDM symbols of the S-SCH in the number zero time slot and the number ten time slot in a time domain, and seventy-two sub-carriers of the S-SCH in the center of a system downlink transmitting bandwidth in a frequency domain, wherein DC sub-carriers are not included. According to the method, interference of S-SCHs of different satellites in a full-area multi-beam satellite LTE system is avoided, the cell search performance is improved, and quick cell searching is achieved. Meanwhile, by means of the S-SCH transmission scheme, estimation of residual frequency offset is convenient to achieve.

Description

technical field [0001] The invention relates to an auxiliary synchronous channel transmission method covering multi-beam satellite LTE in the whole area, and belongs to the technical field of broadband wireless communication. Background technique [0002] Satellite mobile communication is one of the necessary means to realize communication in any place. In recent years, the development of the fourth generation (The Fourth Generation Mobile Communication Systems, 4G) land cellular mobile communication has become more and more mature. Orthogonal Frequency Division Multiplexing (OFDM), Multiple-Input Multiple-Output (Multiple-Input Multiple-Output , MIMO) and the long-term evolution technology of the Third Generation Partnership Project (The3 rd Generation Partnership Project Long Term Evolution, 3GPP-LTE) has been put into commercial use one after another. Apply terrestrial LTE (Terrestrial LTE, T-LTE), which has the characteristics of high speed, large capacity, high spect...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L25/02
Inventor 王海明邓祝明高西奇尤肖虎
Owner SOUTHEAST UNIV
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