File delivery device and file design method for deep space communication

A deep space communication and file transfer technology, applied in the field of deep space communication, can solve problems such as the lack of CFDP architecture research, and achieve the effects of improving data operation performance, saving resources, and improving efficiency and speed

Inactive Publication Date: 2013-08-28
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0005] There are many studies on CFDP protocol and solid-state storage devices, but there are few studies on embedding CFDP into solid-state storage devices and integrating the advantages of CFDP protocol and solid-state storage devices. For the implementation of CFDP on solid-state storage devices There is also less research on architecture

Method used

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  • File delivery device and file design method for deep space communication
  • File delivery device and file design method for deep space communication
  • File delivery device and file design method for deep space communication

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Embodiment

[0032] The specific implementation process of the present invention will be described with reference to the accompanying drawings.

[0033] first as Figure 4 As shown, the CFDP protocol is programmed and stored in the SPI Flash, and the CFDP protocol is run by the embedded processor in the FPGA when the system is working.

[0034] Thereafter, the storage area composed of Flash chips is divided into several virtual storage areas, and a virtual storage area mapping table is generated by using the information of dividing the virtual storage areas.

[0035] Third, the virtual storage area mapping table is a part of the flash translation layer, and is stored in the SPI Flash together with other algorithms of the flash translation layer.

[0036] Fourth, data is transmitted via a high-speed interface. Use DDR3 as a high-speed interface cache.

[0037] Fifth, if image 3 As shown, for multiple user requests, multiple CFDP entities will be generated after being processed by the C...

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Abstract

The invention discloses a file delivery device and file design method for deep space communication. An international standard control delivery protocol CFDP is combined with a high-performance solid state storage device, efficiency and speed of delivering files in the deep space communication are improved, and data throughout of a spacecraft in the deep space communication is increased. The file design method comprises the steps that the CFDP is inlaid into the solid state storage device and is called on each data operation command to form CFDP entities; a data storage area is divided into a plurality of virtual storage areas in the solid state storage device, a mapping table among the virtual storage areas and an actual storage area is built and stored in a nonvolatile storage, and each CFDP entity is distributed with one virtual storage area. The CFDP entities work in a parallel mode. The file delivery device for the deep space communication comprises a CFDP module, a flash memory conversion layer module, a storage module and a high-speed connector module.

Description

technical field [0001] The invention relates to a file transmission device for deep space communication and a design method thereof, belonging to the technical field of deep space communication. Background technique [0002] In recent years, technology in the aerospace field has developed rapidly, especially deep space communication is a research hotspot in various countries. my country's Chang'e moon landing program and Mars exploration program are both underway or in preparation, so research on related technologies in the field of deep space communication has broad application prospects and practical significance. In modern deep space exploration activities, the United States and European countries use a standard protocol in their own space systems - the deep space communication protocol. The deep space communication protocol is a protocol formulated by the Advisory Committee on Space Data Systems (CCSDS), which has been adopted by many countries and institutions conducti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08G06F12/08G06F3/06G06F12/1036
Inventor 杨雷黄承飞安建平卜祥元卢继华靳松
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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