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Satellite communication networking system and working method thereof

A satellite communication and networking technology, applied in the field of satellite communication networking systems, can solve the problems of fixed structure, limited node transmission capacity, single application scenario, etc., and achieve the effect of improving efficiency

Active Publication Date: 2019-12-13
北京中科星通技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The satellite communication network with a mesh structure generally has no main site nodes, and the service data transmission between each node is realized through time division or other multiplexing and multiple access technologies between satellite stations. Although the mesh structure improves the overall network flexibility, but the transmission capacity between nodes is limited, that is, it cannot support large-capacity data transmission
[0013] Although the point-to-point satellite communication network can meet the transmission requirements of large-capacity data, its structure is fixed and the application scenarios are relatively simple.
[0014] In view of the needs of the current complex transmission business, the network management of the existing solution adopts a hierarchical model, and the business data transmission between different subnets is still forwarded through the intermediate nodes, which makes the network structure system not only complex, but also requires technical requirements, cost and system maintenance difficulty. higher

Method used

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  • Satellite communication networking system and working method thereof
  • Satellite communication networking system and working method thereof
  • Satellite communication networking system and working method thereof

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Embodiment 1

[0040] Embodiment 1 of the present invention provides a satellite communication networking system, such as figure 2 As shown, including: central satellite master station, distributed central satellite station, ordinary satellite station, small-aperture antenna satellite station, central satellite master station, distributed central satellite station, and ordinary satellite station are connected to each other through asynchronous time division multiple access network Communication; the asynchronous time division multiple access (TDMA) network performs data communication and high-speed and large-capacity data distribution through the priority of each satellite station. It is the backbone transmission link. The station types include ground fixed stations and large-caliber vehicle stations. The asynchronous time division multiple access network adopts a centerless and asynchronous access mode, and the forward link adopts a time division multiplexing mode. The asynchronous time div...

Embodiment 2

[0050] Embodiment 2 of the present invention provides a business process of a satellite communication networking system such as image 3 shown, including:

[0051] The system includes two sub-networks, namely, the asynchronous centerless TDMA network and the small-aperture antenna satellite station backhaul network. Carriers are divided into different time slots to prevent collisions of data sent by stations to the forward link. In this system, the central satellite master station has the time slot allocation and management function of the forward link, and dynamically allocates time slot resources, that is, allocates different time slot resources according to the different communication rate requirements of satellite sites in each subnet .

[0052] There are four types of time slots in this system, initial reference time slots, access contention time slots, bidirectional time division multiple access time slots and forward time division multiplexing time slots, and the leng...

Embodiment 3

[0058] Embodiment 3 of the present invention provides a working method of a satellite communication networking system. The central satellite master station is the core of the system, manages and controls the entire network, and can realize direct data transmission with each station in the system. The central satellite master station Manage and allocate network-wide forward time slot resources, receive network access application burst time slot data and service transmission resource application burst data from each site, and dynamically allocate time slot resources and spectrum resources according to the resource status of the entire network.

[0059] like Figure 4 As shown, the method of the present embodiment includes:

[0060] Step A1: After the central satellite master station is started, it sends the reference time slot and the access competition time slot. When receiving the network access application message sent by other satellite stations, it sets the status identifie...

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Abstract

The invention discloses a satellite communication networking system and a working method thereof. In the system, a central satellite master station, a distributed central satellite station and a common satellite station communicate with one another through an asynchronous time division multiple access network,wherein the asynchronous time division multiple access network adopts a centerless and asynchronous access mode, the forward link adopts a time division multiplexing mode, and the asynchronous time division multiple access network is suitable for a star network and mesh network topological structure networking mode; a small-caliber antenna satellite station communicates with other satellite stations through a small-caliber antenna satellite station backhaul network; the small-caliberantenna satellite station return network receives forward carrier data of the asynchronous time division multiple access network and is used for forward communication of a small-caliber antenna satellite station and receiving of high-speed large-capacity data, the reverse link uses independent carriers for back transmission, and the reverse link supports the code division multiple access network,the frequency division multiple access network and the time division multiple access network to achieve multiple access. The system can dynamically adjust and manage system resources according to changes of transmission service data.

Description

[0001] This application is a divisional application of a patent application with an application date of February 10, 2017, an application number of 201710072863.3, and an invention title of "a satellite communication networking system and its working method". technical field [0002] The invention relates to the technical field of communication, in particular to a satellite communication networking system and a working method thereof. Background technique [0003] Compared with other communication methods, the biggest advantage of satellite communication is that it has nothing to do with distance, and it is basically not restricted by the ground environment. Resource detection, etc.), military communications, etc., and these application scenarios are characterized by hierarchical management, such as the head office has multiple branches, each branch has multiple subsidiaries, and each subsidiary may have multiple engineering projects Group, when cross-regional or even transn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185
CPCH04B7/1851H04B7/18519
Inventor 詹平王毓晗杨玉琢
Owner 北京中科星通技术有限公司
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