Data transmission method, QoS guarantee method and system for inter-satellite and feeder links
A data transmission method and a technology for receiving data, which are applied in the field of air-space-ground-sea integrated information network
Active Publication Date: 2022-07-12
中国星网网络应用有限公司
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Problems solved by technology
[0004] However, LEO satellite inter-satellite and feeder link adaptive coding and modulation technology is affected by transmission delay, signal-to-noise ratio, and granularity of modulation and coding schemes, so how to take effective measures to avoid the impact of delay and granularity still needs to be solved One problem is to overcome the limitations of existing adaptive methods and provide the maximum information transmission rate under the premise of satisfying QoS (Quality of Service)
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[0070] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation of the present invention.
[0071] In the description of the present invention, it should be understood that the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rath...
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The invention belongs to the technical field of air-space-earth-sea integrated information networks, and specifically discloses a data transmission method, a QoS guarantee method and system for inter-satellite and feeder links, and the data transmission method is based on an estimated value of a signal-to-noise ratio of a received data frame. or power measurement value, and the QoS level adaptively selects the coding rate, modulation method and spreading factor, and determines the transmission SNR estimate or power measurement value according to the information of the first information structure of the frame header of the transmitted data frame. The transmission data is put into the data part of the transmission data frame, the transmission power is adjusted, and the transmission data frame is modulated and sent. By adopting the technical solution, the estimated value of signal-to-noise ratio or the measured value of power is transmitted through the frame header of the data frame with the channel to reduce the delay, which can effectively avoid the influence of the delay, the signal-to-noise ratio and the grading granularity of the spectral efficiency.
Description
technical field [0001] The invention belongs to the technical field of air-space-earth-sea integrated information network, and relates to a data transmission method, a QoS guarantee method and system for inter-satellite and feeder links. Background technique [0002] The air-space-earth-sea integrated information network is based on the ground network and expanded by the space-based network. It adopts a unified technical framework, a unified technical system, and a unified standard specification. It has the characteristics of diversified service carrying, heterogeneous network interconnection, and global resource management. As an important national information infrastructure, the air-space-earth-sea integrated information network has great strategic significance for many fields such as homeland security, emergency disaster relief, transportation, and economic development. [0003] As an important part of the air-space-earth-sea integrated information network, low-orbit sat...
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IPC IPC(8): H04W28/24H04B7/185
CPCH04W28/24H04B7/18519Y02D30/70
Inventor 谷林海刘鸿鹏邹光南
Owner 中国星网网络应用有限公司