CN107395264A - A kind of communicator and method based on IP+over+CCSDS+AOS standards - Google Patents
A kind of communicator and method based on IP+over+CCSDS+AOS standards Download PDFInfo
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- CN107395264A CN107395264A CN201710592610.9A CN201710592610A CN107395264A CN 107395264 A CN107395264 A CN 107395264A CN 201710592610 A CN201710592610 A CN 201710592610A CN 107395264 A CN107395264 A CN 107395264A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/544—Buffers; Shared memory; Pipes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/26—Special purpose or proprietary protocols or architectures
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- Computer Networks & Wireless Communication (AREA)
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- Computer Security & Cryptography (AREA)
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Abstract
The present invention relates to Advanced Orbiting Systems technical field,Specifically a kind of communicator and method based on IP+over+CCSDS+AOS standards,Including with IP Data Input Interfaces,FPGA program storages,Crystal oscillator,Output interface,Remote measurement output module,Power module,Protocol controller etc. forms communicator,Utilize FPGA inner buffer resources,Pass through the physical link and shared buffer memory of multiplexing,So as to by the terminal data from different IP addresses according to IP OVER CCSDS AOS agreements handled and under pass,Even if wherein some terminal data transmission amount is larger,It ensure that more sufficient cache resources use for the pseudo channel,Substantially increase the real-time of efficiency of transmission and data,So as to be provided at a high speed for space flight or other military fields,It is stable,Data transfer reliable and with Universal and scalability.
Description
Technical field
It is specifically a kind of to be marked based on IP+over+CCSDS+AOS the present invention relates to Advanced Orbiting Systems technical field
Accurate communicator and method.
Background technology
Advanced Orbiting Systems (AOS：Advanced Orbiting System) it is by various application numbers on spacecraft
Handled according to according to CCSDS standards, the design of its scheduling portion is to be based on time division multiplexing principle, and speed is fixed by fixed priority
Rate carries out multiple connection to each virtual channel data.But with the rapid development of countries in the world space technology, space communication pattern
Constantly development is changed, and establishes the internet of Incorporate, realizes end-to-end logical between any time, any two points
Letter, it is the inexorable trend of spatial data development.It is most commonly used to be exactly in the data communication protocol of many ground network systems
ICP/IP protocol cluster.But due to the particularity of space data transfer, communication network is set up in space, and realize ground network
Between deep space network in the exchange process of data, too airborne data transmission needs to use other agreement, realizes world network
Intercommunication is just needed by the way of protocol conversion.
CCSDS is according to space internet trend, in April, 2010, it is proposed that IP OVER CCSDS standard drafts are recommended
Book, and it is proposed standard recommendation in September, 2012.IP over CCSDS AOS concept is in space link layer AOS agreements
On realize the transmission of IP datagram, IP over CCSDS AOS agreements will make space use consistent procotol with ground, can
To realize the seamless connection of astro network and ground network.
IP over CCSDS AOS data transfers are realized, its core is that the biography of IP packets is realized in AOS agreements
Pass, currently without the explanation or report for finding similar techniques, be also not yet collected into data similar both at home and abroad.
The content of the invention
In order to solve transmission problem of the IP packets on AOS links, the invention provides one kind to be based on IPover
The communication means and device of CCSDS AOS standards, solve the problems, such as transmission of IP data in CCSDS AOS agreements, make aircraft
IP data can be reliably passed back ground in real time during in orbit.
In order to solve the above-mentioned technical problem, present invention employs following technical scheme：
A kind of communicator based on IP+over+CCSDS+AOS standards, including：
IP Data Input Interfaces, the IP data for inputting to protocol controller carry out signal shaping and level conversion；
FPGA program storages, for storing the program of protocol controller operation；
Crystal oscillator is connected with protocol controller, for producing the clock signal for protocol controller work；
Output interface, the data for being exported to protocol controller carry out level conversion and exported；
Remote measurement output module, the telemetry for being exported to protocol controller carry out level conversion；
Power module, for providing power supply for the modules in communicator；
Protocol controller, the IP data inputted for caching different network terminals by IP Data Input Interfaces, will be cached
IP data carry out IP+over+CCSDS+AOS protocol processes, and according to pre-set priority by according to the good data of protocol processes
Frame is sent to output interface.
In certain specific embodiments of the invention, multiple nets on described protocol controller docking spacecraft
Network terminal, the IP data of multiple network terminals correspond area according to the source IP address section of IP data and default pseudo channel
Point, it is corresponding to carry out dynamic dispatching.
In certain specific embodiments of the invention, described protocol controller is according to default source IP address section pair
Different network terminals, the IP data of different pieces of information speed make a distinction, and carry out multiple connection according to IP+over+CCSDS+AOS agreements
Data block is generated with encapsulation process, protocol controller is according to priority output data.
In certain specific embodiments of the invention, described protocol controller supports six AOS pseudo channels, agreement
The data multiplexing of different pseudo channels is a circuit-switched data by controller.
In certain specific embodiments of the invention, in multiple network terminals of protocol controller docking spacecraft
When, transmit infilled frame when no data is asked.
The present invention also provides a kind of communication means based on IP+over+CCSDS+AOS standards, described communication means bag
Include following steps：
S1. default ip address and VCID allocation lists are established；
S2.IP data are sent into protocol controller from input interface；
S3. protocol controller is by IP data and relevant information deposit FPGA shared buffer memories；
S4. protocol controller carries out IP OVER according to IP address and VCID allocation lists to the data in shared buffer memory
CCSDS AOS protocol processes；
S5. the data after IP OVER CCSDS AOS protocol processes are encoded, after randomization by defeated
Outgoing interface exports.
The present invention is allowed to compared with prior art, have the following advantages that and actively imitate due to using above technical scheme
Fruit：
The present invention utilizes FPGA inner buffer resources, by the physical link and shared buffer memory of multiplexing, devises based on IP+
The communicator and communication means of over+CCSDS+AOS standards, so that by the terminal data from different IP addresses according to IP
OVER CCSDS AOS agreements handled and under pass, even if wherein some terminal data transmission amount is larger, ensure that more
Sufficient cache resources use for the pseudo channel, substantially increase the real-time of efficiency of transmission and data, so as to be space flight
Or other military fields provide at a high speed, stably, reliably and have Universal and scalability data transfer.
Brief description of the drawings
Fig. 1 is the design principle block diagram of communicator in the present invention；
Fig. 2 is the schematic flow sheet of communication means in the present invention.
Embodiment
Technical scheme proposed by the present invention is further described below in conjunction with the drawings and specific embodiments.According to following
Illustrate and claims, advantages and features of the invention will become apparent from.It should be noted that accompanying drawing is using very simplified shape
Formula and non-accurately ratio is used, be only used for conveniently, lucidly aiding in illustrating the purpose of the embodiment of the present invention.
With the construction and development of high speed space data communication network, except sending, receiving in space communication network
Various remote informations, it is also necessary to which the data message of transmission of large capacity in spatial network, these information contain substantial amounts of more matchmakers
Body information, future space communication will be combined together with ground communication, for it is more than transport layer application provide reliably, have QoS guarantors
Card it is end-to-end between communicate.IP agreement level is introduced its body that communicates by the situation fallen behind in face of Space communication protocols, CCSDS
System, various satellite communications services are mounted on ICP/IP protocol stack, while reducing the cost of space development, meet that space leads to
The increasingly complicated demand situation of letter.
To promote the end-to-end interaction of space communication network, processing and the technological evolvement of flexible networking, CCSDS to issue IP
The proposed standard that OVER CCSDS SPACE LINKS transmit as IP packets in CCSDS link protocols, CCSDS AOS lead to
Cross field effect transistor IPv4, IPv6 and encapsulated data units, there is provided support the standard of IP packets transmission, in order to
The transmission of IP packets is realized on CCSDS AOS, IP packets must use the multiplexing business or encapsulation business of its offer.
The core of IP OVER CCSDS AOS link layers that is to say multiplexing and the encapsulation technology to IP packets.
On the other hand, the present invention is designed using FPGA to the multiplexing module of IP packets, to solve CCSDS AOS associations
In view the problem of transmission of IP data bag, the present invention is specifically described below by way of different embodiments.
Embodiment 1
Referring to Fig. 1, the present invention is the communicator based on IP+over+CCSDS+AOS standards, mainly include IP data
Input interface, FPGA program storages, crystal oscillator, output interface, remote measurement output module, power module, protocol controller,
Wherein, IP Data Input Interfaces, the IP data for inputting to protocol controller carry out signal shaping and level conversion；FPGA journeys
Sequence memory, for storing the program of protocol controller operation；Crystal oscillator is connected with protocol controller, for producing for association
The clock signal of controller work is discussed, as whole communicator provides frequency reference source；Output interface, for protocol integrated test system
The data of device output carry out level conversion and exported；Remote measurement output module, for entering to the telemetry that protocol controller exports
Line level is changed；Power module, for providing reliable voltage-stabilized power supply for the modules in communicator；Protocol controller
(PLD), the IP data inputted for caching different network terminals by IP Data Input Interfaces, by caching
IP data carry out IP+over+CCSDS+AOS protocol processes, and according to pre-set priority by according to the good data frame of protocol processes
It is sent to output interface.
The present invention uses realization means of the FPGA program storages as the package system of protocol controller, FPGA relative to
Discrete component power consumption is smaller, volume, in light weight, aboundresources and programmable so that interface rate, pattern and data frame format
Change is simpler, and the adaptive surface of protocol controller is wider, improves design flexibility, reduces design cost and technical risk.
Protocol controller can dock multiple network terminals on spacecraft, and the IP data of multiple network terminals are according to IP
The source IP address section of data and default pseudo channel, which correspond, to be distinguished, corresponding to carry out dynamic dispatching.In protocol controller
When docking multiple network terminals of spacecraft, infilled frame is transmitted when no data is asked.Protocol controller is according to default
Source IP address section makes a distinction to the IP data of different network terminals, different pieces of information speed, and according to IP+over+CCSDS+
AOS agreements carry out multiple connection and encapsulation process generation data block, support IP to access data rate from 0 to 100Mbps, agreement control
Device processed meets the data of form according to priority output.Preferably, the protocol controller in the present invention supports six AOS virtually to believe
Road, when carrying out data transmission, the data multiplexing of different pseudo channels is a circuit-switched data by protocol controller.
In the present invention, the preferred chip of each module is：FPGA can from 3,000,000 radioresistance level height of Xilinx companies
By the series of chip Virtex II, program storage selects the highly reliable chip XQR17V16PLCC44 of Xilinx companies radioresistance level,
Interface chip is from TI companies SN55LVDS series, and crystal oscillator is from QT89LD10M series.Obviously, the technology of this area
Personnel can be upgraded or be reconfigured to the present invention, including pseudo channel it is expansible, support IP access data rate from 0 to
100Mbps is expansible, the in-orbit switching of 8 kinds of priority of support is expansible, FPGA is selected and is not limited to Xilinx companies, program storage
From being not limited to Xilinx companies, interface chip from being not limited to TI companies, crystal oscillator from being not limited to QT89LD10M systems
Row etc..
Communicator based on IP+over+CCSDS+AOS standards in the present invention from high reliability FPGA, PROM and
Peripheral interface device etc., by the physical link of multiplexing and shared caching, by the terminal data from different IP addresses according to
IP OVER CCSDS AOS agreements handled and under pass.Even if wherein some terminal data transmission amount is larger, ensure that compared with
For sufficient cache resources so that the pseudo channel uses, the efficiency of transmission during effectively raising, when each terminal
Data volume more mean time, ensure that the real-time of data.
Embodiment 2
Referring to Fig. 2, the present invention also provides a kind of communication means based on IP+over+CCSDS+AOS standards, communication means
Comprise the following steps：
S1. default ip address and VCID allocation lists are established；
S2.IP data are sent into protocol controller from input interface；
S3. protocol controller is by IP data and relevant information deposit FPGA shared buffer memories；
S4. protocol controller carries out IP OVER according to IP address and VCID allocation lists to the data in shared buffer memory
CCSDS AOS protocol processes；
S5. the data after IP OVER CCSDS AOS protocol processes are encoded, after randomization
Exported by output interface.
During concrete application, data are sent into IP OVER SSCDS AOS protocol controllers from input interface, and user data should be
The IP packets of standard, in order to improve the transmission speed of IP packets, shorten the delay between the communication of the world, it is of the invention by club
Some IP data are all write in the caching in same FPGA after entering protocol controller, and IP kernel enters to the IP data in caching
Again by being exported after the coding in protocol controller, randomization resume module after row IP OVER SSCDS AOS protocol processes.
The course of work of the present invention is described further below.It is initial to perform upper electricity for FPGA softwares after electricity on product
Configuration, establishes default ip address and VCID allocation lists, into default mode of operation, in this mode, protocol controller passes through defeated
Incoming interface receives the standard IP bag datas from front end, and the deposit of the relevant information of IP packets and its IP packet is shared slow
Among depositing, protocol controller carries out IP OVER SSCDS further according to IP address and VCID allocation lists to the data in shared buffer memory
AOS protocol processes, data after processing are encoded, are exported after randomization.
Due to the present invention communication means in, all same cachings of IP data sharings, so that transmitting
During the big specific load of data volume, its efficiency of transmission is greatly improved, efficiency of transmission can be up to 83%, while access after networking
Network answer delay be less than 20ms.
Those skilled in the art should be understood that the present invention can be implemented without departing from this with many other concrete forms
The spirit or scope of invention, disclosed above is only the preferred embodiment of the present invention.Preferred embodiment does not have detailed descriptionthe and owned
Details, it is only described embodiment also not limit the invention.Obviously, according to the content of this specification, can make a lot
Modifications and variations.This specification is chosen and specifically describes these embodiments, be in order to preferably explain the present invention principle and
Practical application, so that one of ordinary skill in the art can utilize the present invention well.The present invention is only by claims and its entirely
The limitation of portion's scope and equivalent, those skilled in the art can be defined such as appended claims the present invention spirit and
Within the scope of make and changing and modifications.
Claims (6)
- A kind of 1. communicator based on IP+over+CCSDS+AOS standards, it is characterised in that including：IP Data Input Interfaces, the IP data for inputting to protocol controller carry out signal shaping and level conversion；FPGA program storages, for storing the program of protocol controller operation；Crystal oscillator is connected with protocol controller, for producing the clock signal for protocol controller work；Output interface, the data for being exported to protocol controller carry out level conversion and exported；Remote measurement output module, the telemetry for being exported to protocol controller carry out level conversion；Power module, for providing power supply for the modules in communicator；Protocol controller, the IP data inputted for caching different network terminals by IP Data Input Interfaces, by the IP of caching Data carry out IP+over+CCSDS+AOS protocol processes, and will be sent out according to pre-set priority according to the good data frame of protocol processes Give output interface.
- A kind of 2. communicator based on IP+over+CCSDS+AOS standards according to claim 1, it is characterised in that Multiple network terminals on described protocol controller docking spacecraft, the IP data of multiple network terminals are according to IP data Source IP address section and default pseudo channel correspond and distinguish, it is corresponding to carry out dynamic dispatching.
- 3. a kind of communicator based on IP+over+CCSDS+AOS standards according to claim 1 or 2, its feature exist In described protocol controller is according to default source IP address section to different network terminals, the IP data of different pieces of information speed Make a distinction, and multiple connection and encapsulation process generation data block are carried out according to IP+over+CCSDS+AOS agreements, protocol controller is pressed According to priority output data.
- A kind of 4. communicator based on IP+over+CCSDS+AOS standards according to claim 2, it is characterised in that Described protocol controller supports six AOS pseudo channels, and the data multiplexing of different pseudo channels is one by protocol controller Circuit-switched data.
- A kind of 5. communicator based on IP+over+CCSDS+AOS standards according to claim 2, it is characterised in that In multiple network terminals of protocol controller docking spacecraft, infilled frame is transmitted when no data is asked.
- A kind of 6. communication means based on IP+over+CCSDS+AOS standards, it is characterised in that described communication means include with Lower step：S1. default ip address and VCID allocation lists are established；S2.IP data are sent into protocol controller from input interface；S3. protocol controller is by IP data and relevant information deposit FPGA shared buffer memories；S4. protocol controller carries out IP OVER CCSDS according to IP address and VCID allocation lists to the data in shared buffer memory AOS protocol processes；S5. the data after IP OVER CCSDS AOS protocol processes are encoded, connect after randomization by output Mouth output.
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Cited By (5)
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| CN109405673A (en) * | 2018-11-21 | 2019-03-01 | 江西洪都航空工业集团有限责任公司 | Intelligent missile-borne remote-measuring equipment |
| CN110515744A (en) * | 2019-08-14 | 2019-11-29 | 北京邮电大学 | A kind of method of spacecraft software information interaction |
| CN110808920A (en) * | 2019-10-29 | 2020-02-18 | 中国科学院国家空间科学中心 | Satellite communication flow control method for coexistence of CCSDS (consultative committee for space data system) frame and IP (Internet protocol) message |
| CN111556051A (en) * | 2020-04-26 | 2020-08-18 | 上海航天测控通信研究所 | High-speed space network data protocol conversion and multiplexing device based on FPGA |
| CN111770155A (en) * | 2020-01-03 | 2020-10-13 | 中国人民解放军63920部队 | Data processing method, device, storage medium and processor |
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Application publication date: 20171124 |