KR-20260063635-A - Development of 100 Gbps-level FSOC-DTN optical wireless communication protocol technology based on parallel processing techniques for space internet

Abstract

The present invention relates to optical communication used in the space and satellite fields, and more specifically, to a Gbps-class FSOC-DTN system based on a parallel processing technique for efficiently transmitting large-scale data and overcoming the limitations of RF frequency resources in deep space by utilizing FSOC (free space optical communication)-DTN (delay tolerant networking) technology.

Inventors

• 박정태
• 김완찬

Assignees

• 주식회사 스페이스비트

Dates

Publication Date

20260507

Application Date

20241030

Claims (5)

1. A physical layer (110) in which physical data is transmitted and received using optical signals via FSOC communication; A data link layer (120) that performs error control of data received through FSOC communication in the physical layer (110), data frame configuration, and data flow control; A network layer (130) that divides the data transmitted from the data link layer (120) into packets and performs routing; A transport layer (140) that manages the transmission of packet data transmitted from the above network layer (130) using LTP-BP; A session layer (150) that manages transmission, reception, and retransmission between two devices performing data communication through the transmission layer (140); A presentation layer (160) that converts data into a format that can be transmitted over a network and restores it to its original format at the receiving end; and It is composed of an application layer (170) that processes data restored to its original format in the above presentation layer (160) and provides it to the user, A parallel processing technique-based Gbps-class FSOC-DTN system characterized by the use of a parallel processing technique for data processing for transmission.
2. In paragraph 1, The above network layer (130) A parallel processing technique-based Gbps-class FSOC-DTN system characterized by using DTN technology to divide into packets and perform routing.
3. In paragraph 2, The above session layer (150) A parallel processing technique-based Gbps-class FSOC-DTN system characterized by using CFDP Session Management to manage transmission, reception, and retransmission between two devices.
4. In paragraph 3, The above application layer (170) A Gbps-class FSOC-DTN system based on a parallel processing technique characterized by using CFDP as a protocol for processing restored data.
5. In paragraph 4, The above parallel processing technique is a Gbps-class FSOC-DTN system based on a parallel processing technique characterized by dividing data into multiple parallel processes or threads for processing.

Description

Development of 100 Gbps-level FSOC-DTN optical wireless communication protocol technology based on parallel processing techniques for space internet The present invention relates to optical communication used in the space and satellite fields, and more specifically, to a 100 Gbps-class FSOC-DTN system based on a parallel processing technique for efficiently transmitting large-scale data and overcoming the limitations of RF frequency resources in deep space by utilizing FSOC (free space optical communication)-DTN (delay tolerant networking) technology. Free Space Optical Communication (FSOC) is a technology that transmits data through free space using lasers and is being utilized effectively in areas where it is difficult to install fiber optic cables. In modern times, this FSOC method has begun to be used in various fields to meet the demands of situations such as the depletion of RF spectrum frequency resources and the rapid increase in mobile data. In particular, the FSOC method is showing potential for next-generation space satellite communication. That is, it is gaining attention as a communication method for space that requires the transmission of large amounts of data and is not affected by RF frequency constraints. In the case of NASA, the use of the FSOC method in the vacuum of space is expected to increase further as they succeeded in receiving data in experiments on FSOC communication in deep space. Conventional technology using this FSOC method has been disclosed in Korean Registered Patent No. 10-2452318. Conventional technology includes an exciter driving at least one reactor, said reactor being an under-damped resonant circuit comprising a network of lighting elements within a reactive string and reactive components distributed between the lighting elements, and such reactive components implement the FSOC method by aligning individual lighting elements. However, conventional technology suffers from communication interruptions and quality degradation due to the time required for initial bidirectional precision optical alignment, obstacles between communication channels, optical loss, and differences in curved orbits between satellites, and has limitations in continuous and stable communication and network operation. FIG. 1 is an embodiment of a Gbps-class FSOC-DTN system based on a parallel processing technique of the present invention. The present invention will be described in more detail below with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best describe their invention, they should be interpreted in a meaning and concept consistent with the technical spirit of the present invention. Furthermore, unless otherwise defined, technical and scientific terms used shall have the meaning commonly understood by those skilled in the art to which this invention pertains. Descriptions of known functions and configurations that could unnecessarily obscure the essence of the present invention in the following description and attached drawings are omitted. The drawings presented below are provided as examples to ensure that the spirit of the present invention is sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms. Additionally, throughout the specification, the same reference numerals indicate the same components. It should be noted that the same components in the drawings are represented by the same reference numerals wherever possible. FIG. 1 is an example of a Gbps-class FSOC-DTN system based on the parallel processing technique of the present invention. The Gbps-class FSOC-DTN system based on the parallel processing technique of the present invention, as illustrated in FIG. 1, A physical layer (110) in which physical data is transmitted and received using optical signals via FSOC communication, A data link layer (120) that performs error control of data received through FSOC communication in the physical layer (110), data frame configuration and data flow control, A network layer (130) that divides the data transmitted from the data link layer (120) into packets and performs routing, A transport layer (140) that manages the transmission of packet data transmitted from the above network layer (130) using LTP-BP, A session layer (150) that manages transmission, reception, and retransmission between two devices performing data communication through the transmission layer (140), A presentation layer (160) that converts data into a format that can be transmitted over a network and restores it to its original format at the receiving end, and It may include an application layer (170) that processes data restored to its original format in the presentation layer (