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Satellite switching system based on time and frequency domains

A switching system, time-frequency domain technology, applied in transmission systems, radio transmission systems, electrical components, etc., can solve problems such as the inability to meet the needs of on-board switching, and achieve high engineering application value, good scalability, and simple structure.

Active Publication Date: 2011-11-23
XIAN INSTITUE OF SPACE RADIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned multiple switching methods obviously cannot meet the on-board switching needs of mobile communication satellites using beamforming technology.

Method used

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  • Satellite switching system based on time and frequency domains
  • Satellite switching system based on time and frequency domains
  • Satellite switching system based on time and frequency domains

Examples

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Embodiment Construction

[0023] The present invention will be further introduced below in conjunction with the drawings.

[0024] Such as figure 2 Shown is a schematic diagram of the system of the present invention. The system of the present invention includes: a carrier channel processing module, a carrier time slot exchange module and a carrier channel synthesis module. The invention can realize the exchange of beam spots on different beams on a mobile communication satellite satellite, that is, exchange business information belonging to different carriers and different time slots in different subband signals to different carriers and time slots of another subband signal .

[0025] The carrier channel processing module receives M sub-band signals, performs down-conversion processing on the digital carrier signals in the sub-band signals, and directly outputs them to the carrier time slot exchange module. The multiple digital carrier signals in the sub-band signal have equally spaced carrier frequencie...

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Abstract

The invention discloses a satellite switching system based on time and frequency domains. The satellite switching system is used for realizing the switching among wave packet points on different wave packets of a mobile communication satellite, and comprises a carrier channel processing module, a carrier time slot switching module and a carrier channel synthesis module, wherein the carrier time slot switching module includes M first-stage time division wire connectors, a second-stage space division wire connector and M third-stage time division wire connectors. The first-stage time division wire connectors are used for realizing the time slot switching for service information. The second-stage space division wire connector is used for realizing the switching from the first-stage time division wire connectors to the third-stage time division wire connectors. The third-stage time division wire connectors are used for realizing the carrier switching for the service information. According to the invention, the two-dimensional switching of time and frequency domains between different sub-band signals of the mobile communication satellites can be realized.

Description

Technical field [0001] The invention relates to an on-board switching system based on the time-frequency domain. Background technique [0002] The mobile communication satellite system uses beamforming technology to form multiple spot beams for wide-area coverage to achieve enhanced radiation gain and support small terminal mobile communication services. For example, the Thuraya satellite forms 245 spot beams and the Imarsat4 satellite forms 228 spot beams. As the communication traffic between mobile communication terminals in and between beams continues to grow, the requirements for communication capacity, communication delay and call quality are getting higher and higher. In order to make full use of satellite resources, mobile communication satellite systems adopt on-board switching Way to achieve single-hop communication and increase communication capacity. [0003] The existing on-board switching technology can be divided into two categories: on-board circuit switching and on...

Claims

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Application Information

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IPC IPC(8): H04B7/185
Inventor 赵毅楼大年张传林陈锐
Owner XIAN INSTITUE OF SPACE RADIO TECH
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