Adaptive transmission method for broadband satellite communication system

A technology of satellite communication system and self-adaptive transmission, applied in the field of downlink transmission, which can solve problems such as low resource utilization and difficulty in fixed carrier transmission, and achieve the effect of reducing implementation complexity and reducing overhead

Active Publication Date: 2016-12-14
CHINA ACADEMY OF SPACE TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a downlink variable carrier rate transmission method, which can adaptively adjust the carrier rate dynamically according to the receiving capability and channel co

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  • Adaptive transmission method for broadband satellite communication system
  • Adaptive transmission method for broadband satellite communication system
  • Adaptive transmission method for broadband satellite communication system

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Embodiment Construction

[0022] Aiming at the deficiencies of the prior art, the present invention proposes an adaptive transmission method for a broadband satellite communication system, which can dynamically adjust the carrier rate according to the terminal's receiving capability and channel conditions, and solves the problem that fixed carrier transmission is difficult to meet the needs of different types of terminals 1. The problem of low resource utilization, the method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] Such as figure 1 As shown, an adaptive data transmission method for a broadband satellite communication system includes the following steps:

[0024] (1) The resource management center dynamically allocates carrier rate and time slot resources for each target terminal according to the receiving capability and channel conditions of each target terminal, and determines the downlink frame structure.

[0025] Assuming th...

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Abstract

The invention provides an adaptive transmission method for a broadband satellite communication system. The method comprises the following steps: allocating carrier and time slot resources according to the receiving capacity and the channel conditions of a target terminal, determining a downlink frame structure, extracting to-be-sent business data, framing and sending the business data, then, realizing receiving synchronization by a ground target terminal through a synchronous time slot, analyzing a signaling time slot to obtain a starting business time slot sequence number, an ending business time slot sequence number, a carrier rate, a modulation mode, an encoding mode and a data length, and finally, analyzing a corresponding business time slot according to the carrier rate, the modulation mode, the encoding mode and the data length to obtain transmission data to complete adaptive transmission. Compared with the prior art, a download variable carrier rate transmission method is used to adaptively and dynamically adjust the carrier rate according to the receiving capacity and the channel conditions of the target terminal, so that the problems that fixed carrier transmission is difficult to meet the transmission demands of different target terminals and that the resource utilization rate is low are solved.

Description

technical field [0001] The invention relates to a downlink transmission method for a broadband satellite communication system, in particular to an adaptive transmission method for a broadband satellite communication system. Background technique [0002] The main goal of the broadband satellite communication system is to provide voice, data, image, video and other multimedia services as well as high data rate Internet access services for users in the wide area coverage area through satellites. Most broadband satellite communication systems use Ku and Ka frequency bands, and use multi-point beams and frequency multiplexing technologies to increase system capacity. The United States and Europe are pioneers in the application of broadband satellite communications. The users they serve include home users, enterprise users, government users, and users of high-speed mobile platforms such as aircraft and high-speed rail. They are widely used in broadband access, base station relay, ...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L27/26
CPCH04L1/0002H04L27/2656
Inventor 冯瑄任术波周钠陶滢张磊梁宗闯
Owner CHINA ACADEMY OF SPACE TECHNOLOGY
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