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Two-dimensional annular self-organizing inter-satellite link channel access control method

A technology of channel access control and inter-satellite link, applied in the field of two-dimensional ring inter-satellite link channel access control, can solve the problems of reducing network performance, wasting channel resources, unable to meet service requirements, etc., and improving network performance. Capacity, high bandwidth and high capacity, and the effect of improving channel resource utilization

Pending Publication Date: 2022-04-29
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

The waste of channel resources caused by the traditional fixed time slot allocation scheme reduces network performance and cannot meet business needs

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  • Two-dimensional annular self-organizing inter-satellite link channel access control method
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  • Two-dimensional annular self-organizing inter-satellite link channel access control method

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Embodiment Construction

[0040] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0041] combine Figure 11 As shown, the present invention provides a two-dimensional annular inter-satellite link channel access control method, the method is applicable to the two-dimensional annular self-organizing constellation network structure based on the Walker N / P / F constellation structure, including N low-orbit Satellites are evenly distributed in P orbital planes. For example, in the present invention, each orbital plane forms a co-orbit ring network comprising 7 satellite nodes, and each different-orbit plane forms a different-orbit ring network comprising 4 satellite nodes, and the whole low-orbit intersatellite link is composed of 4 ...

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Abstract

The invention discloses a two-dimensional annular self-organizing inter-satellite link channel access control method, which is characterized in that external synchronization mainly adopts Beidou / GPS (Global Positioning System) time service, and internal synchronization mainly adopts a bidirectional synchronization mode; when a channel access control strategy is designed, a low-speed control link channel access control strategy and a high-speed task data link channel access control strategy are separately designed by adopting a control plane and data plane separation thought; in order to guarantee the transmission timeliness, a control plane adopts a fixed time slot allocation method based on TDMA, a low-speed link works in a TDD mode and only has a sending state and a receiving state, sending is carried out in an allocated time slot, and receiving is carried out in an unallocated time slot; in order to meet the asymmetric transmission requirement of uplink and downlink services of a task data transmission network, the data plane channel access control scheme adopts a dynamic time slot allocation technology based on TDMA (Time Division Multiple Access), and supports variable allocation of uplink and downlink time slot resources. According to the invention, the channel resource utilization rate is improved, the network capacity of the two-dimensional annular inter-satellite link is improved, and the network transmission delay is reduced.

Description

technical field [0001] The present invention relates to the field of satellite technology, and more specifically relates to a two-dimensional annular inter-satellite link channel access control method. Background technique [0002] In recent years, aerospace technology has developed rapidly. After experiencing two stages of single-satellite application and constellation application, the satellite field has gradually moved towards networking. The inter-satellite link is a communication link established between satellites, and it is the basis for information and data transmission between satellites. Due to the limited land area of ​​our country, it is impossible to realize global satellite networking through ground station forwarding. In the case of strictly limited ground stations, the establishment of inter-satellite links has become one of the most important prerequisites for inter-satellite networking. . [0003] After the satellites are connected through the inter-satel...

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Application Information

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IPC IPC(8): H04B7/185H04J3/06H04W40/24H04W48/16H04W74/00H04W84/06
CPCH04B7/18521H04W74/002H04W84/06H04J3/0638H04W48/16H04W40/246Y02D30/70
Inventor 刘思力陈建云吕蓉杨志玺厉俊男张煜锋崔璨叶淦华谢世珺陆锐敏
Owner NAT UNIV OF DEFENSE TECH
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