CN116319597A - Enhanced data real-time transmission method under optical fiber channel - Google Patents
Enhanced data real-time transmission method under optical fiber channel Download PDFInfo
- Publication number
- CN116319597A CN116319597A CN202310343027.XA CN202310343027A CN116319597A CN 116319597 A CN116319597 A CN 116319597A CN 202310343027 A CN202310343027 A CN 202310343027A CN 116319597 A CN116319597 A CN 116319597A
- Authority
- CN
- China
- Prior art keywords
- real
- data
- enhanced
- fiber channel
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000013307 optical fiber Substances 0.000 title claims description 6
- 239000000835 fiber Substances 0.000 claims abstract description 37
- 238000013507 mapping Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 21
- 238000004891 communication Methods 0.000 abstract description 12
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/625—Queue scheduling characterised by scheduling criteria for service slots or service orders
- H04L47/6275—Queue scheduling characterised by scheduling criteria for service slots or service orders based on priority
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Communication Control (AREA)
Abstract
The invention discloses a real-time transmission method of enhanced data under a fiber channel, which introduces an enhanced real-time frame structure into the fiber channel and transmits the data with the highest priority according to the connection information in the enhanced real-time frame structure. Step 1, establishing clock synchronization in an FC system of a fiber channel; step 2, setting a transmission period and a data size of an enhanced real-time frame in the FC system; step 3, the FC system sets a synchronization period, and takes the synchronization period as a frame header, an information sender calculates a frame header starting point and periodically sends data; step 4, the switching network adopts a first type service mode to forward the N-port data, and the highest priority transmits the data; and 5, receiving the highest priority transmission data by the receiver. By embedding the synchronous transmission technology into asynchronous data transmission, the priority and grade of the service implementation are differentiated more precisely, and the real-time transmission requirement is better met and matched, so that the high real-time performance in the aircraft, vehicle, warship and satellite-borne electronic communication system is met.
Description
Technical Field
The invention belongs to the field of information transmission, and particularly relates to a method for transmitting enhanced data in real time under a fiber channel.
Background
With the development of application of network architecture construction technology, communication technology, computing technology and the like in electronic communication systems, current aircraft, vehicles, warships and satellite-borne electronic communication systems further develop to the direction of unification, flexible activation and convenient fusion, and the data transmission requirements on a bus network are higher and higher.
However, the data transmission of the bus network in the prior art cannot meet the requirements, and a communication technology which has large bandwidth, low delay, long-distance transmission, flexible topology (adapting to the topology architecture of various fixed networks) and supports various upper layer protocols so as to adapt to the requirements of high-performance data transmission is urgently needed.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a method for transmitting enhanced data in real time under a fiber channel, so as to meet the requirements of reliable, effective and real-time data transmission in the application field.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a method for transmitting enhanced data in real time under a fiber channel comprises the following steps,
and introducing an enhanced real-time frame structure into the optical fiber channel, and transmitting data with the highest priority according to the connection information in the enhanced real-time frame structure.
Preferably, the method specifically comprises the following processes,
and 5, receiving the highest priority transmission data by the receiver.
Preferably, the enhanced real-time frame structure is an SOF field, and an enhanced services connection SOF 1 delimiter is added to the SOF frame to indicate that the frame type is an enhanced real-time frame.
Preferably, the SOFe1 delimiter function is to enhance the service connection, the RD initial value is negative, and the ordered set is defined as K28.5, D21.3, D24.1, D24.1.
Preferably, the protocol layering model of the fiber channel includes: an FC-0 physical link layer, an FC-1 transmission layer, an FC-2 frame protocol layer, an FC-3 public service layer and an FC-4 protocol mapping layer;
preferably, the fibre channel is encoded using 8B10B at the FC-1 transport layer.
Preferably, the FC-2 frame protocol layer uses a hierarchical structure when building blocks, and the hierarchical structure is sequentially from bottom layer to top layer: frame/sequence/exchange services.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a method for transmitting enhanced data in real time under a fiber channel, which expands a real-time sub-channel with periodic intervals by utilizing the existing FC protocol, is used for transmitting real-time data with highest priority and ensures that data of related bearing information is transmitted preferentially under a period of periodic time occupation. By embedding the synchronous transmission technology into asynchronous data transmission, the priority and grade of the service are differentiated more finely, the real-time transmission requirement is better met and matched, the technology of higher real-time data transmission can be constructed on the basis of the current fiber channel technology, and the technology is effectively fused with the current fiber channel technology, so that the high real-time performance in the aircraft, the vehicle, the warship and the satellite-borne electronic communication system is met.
Furthermore, the fiber channel adopts 8B10B coding in the FC-1 layer to ensure current balance, thereby meeting long-distance serial transmission, special characters and being convenient for clock recovery.
Drawings
FIG. 1 is a schematic diagram of a fibre channel protocol layering model;
FIG. 2 is a schematic diagram of a hierarchical relationship of protocol data units;
FIG. 3 is a hierarchical FC-2 structure;
FIG. 4 is a schematic diagram of a fibre channel frame structure;
FIG. 5 is a schematic diagram of a fibre channel frame structure;
FIG. 6 is a schematic diagram of an enhanced services technology operation process;
Detailed Description
The invention will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit, the invention.
Fibre Channel (FC) provides these advantages, and is a communication technology designed to accommodate high performance data transmission requirements and is a companion protocol.
As shown in fig. 1, the protocol employed by the fibre channel technology uses a layered model, which is divided into five layers: FC-0 (physical link layer), FC-1 (transport layer), FC-2 (frame protocol layer), FC-3 (common service layer), FC-4 (protocol mapping layer), as shown in FIGS. 3-6, FC-0, FC-1, FC-2 layers form the FC physical layer defining the FC physical characteristics, and FC-3 and FC-4 define network services and other protocol interfaces, respectively.
Fibre channel provides four types of services for application to the switching network and N-ports of FCs, which are primarily distinguished by the method of allocation and maintenance of communication loops between the communication N-ports, and the level of delivery integrity required for the application.
The third type of service is a connectionless service or end-to-end flow control between two N-ports, with no delivery or no delivery notification, and a datagram service provided by the operating environment.
Yet another service is a hybrid service. Hybrid services are an option for class 1 services, allowing two N ports for which a class 1 dedicated connection has been established to insert class 2 and class 3 service frames.
The invention aims at adding a special enhanced real-time transmission method in the scene of mixed service so as to ensure the use of the application with extremely high real-time requirement.
The method and the related technology provided by the invention aim at analyzing the optical fiber channel protocol in the real-time transmission data layer in the application scene of various electronic communication systems of the airborne, vehicle-mounted, carrier-mounted and satellite-mounted, and provide an enhanced real-time data transmission technology, so that the real-time property and reliability of data transmission are further improved, and the real-time data transmission requirements in various electronic communication systems of the airborne, vehicle-mounted, carrier-mounted and satellite-mounted are met.
The invention introduces synchronous real-time technology in the fiber channel, utilizes the existing FC protocol to expand the periodic interval real-time sub-channel for the highest priority real-time data transmission, and ensures that the data of related bearing information is transmitted preferentially under the period of periodic time occupation. The functions are expanded on the basis of the existing fiber channel so as to realize the satisfaction of the application with strong real-time property.
The fibre channel protocol defines three protocol data units: frames, sequences, and exchanges. In the hierarchical structure of FC transmission data, the most basic unit of FC-2 layer transmission is a frame, and the length of one valid frame should be an integer multiple of the transmission word. The structural relationship of frames, sequences and exchanges is shown in figure 2.
Meanwhile, the FC-2 layer protocol uses a layered structure when building blocks, and the layered structure comprises the following steps from the bottom layer to the top layer: frame/sequence/exchange services. The organization of the blocks is shown in fig. 3.
The frame is a basic data unit for information interaction between two nodes in the fiber channel network, and the FC frame structure is shown in fig. 4:
the fiber channel adopts 8B10B coding in the FC-1 layer to ensure current balance, meets long-distance serial transmission and special characters, and is convenient for clock recovery.
The invention aims at SOF field, adds a new definition to realize the requirement of strong real-time.
Under the technology of fiber channel overall clock synchronization, an enhanced real-time frame structure is introduced, and an SOF frame delimiter is added with an enhanced service connection SOF in the following figure 5 e1 To indicate that such frame type is an enhanced real-time frame.
SOF e1 The delimiter function is to enhance the service connection, the RD initial value is negative, and the ordered set is defined as K28.5, D21.3, D24.1, D24.1. Connection is established between the transmitting and receiving N ports according to the enhanced service frame, under the real-time requirement of given enhanced service data (synchronous period, data size), the enhanced service data is set to be the transmission data with the highest priority by utilizing the clock synchronous condition of the optical fiber channel system, and SOF is adopted e1 The enhanced service frames are transmitted with priority in the head information.
As shown in fig. 6, the method for transmitting enhanced data in real time under a fiber channel of the present invention includes the following steps,
and 5, receiving the data by the receiver.
The ordered set under the SOFe1 frame delimiter is added with a definition, when the definition is received by the opposite side, connection information such as period, data length and the like is established according to the following content convention, and then data transmission is carried out according to the I-type service. The key point is this incremental definition, identifying the data to be transmitted at the highest priority later according to the agreed period and data length
All nodes (transmitting, switching network and receiving party) in the fiber channel system need to follow the enhanced service frame protocol, so that the frame of the type is ensured to be processed at the correct clock node according to the enhanced service frame technical requirement, and the realization of real-time performance is ensured.
Based on the method provided by the invention, a technology with higher real-time data transmission can be constructed on the basis of the current fiber channel technology, and the technology is effectively fused with the current fiber channel technology so as to meet the high real-time performance in an on-board electronic communication system, a vehicle, a ship and a satellite.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art. The above is only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (7)
1. A method for transmitting enhanced data in real time under a fiber channel is characterized by comprising the following steps,
and introducing an enhanced real-time frame structure into the optical fiber channel, and transmitting data with the highest priority according to the connection information in the enhanced real-time frame structure.
2. The method for transmitting enhanced data under a fiber channel according to claim 1, wherein the method comprises the following steps,
step 1, establishing clock synchronization in an FC system of a fiber channel;
step 2, setting a transmission period and a data size of an enhanced real-time frame in the FC system;
step 3, the FC system sets a synchronization period, and takes the synchronization period as a frame header, an information sender calculates a frame header starting point and periodically sends data;
step 4, the switching network adopts a first type service mode to forward the N-port data, and the highest priority transmits the data;
and 5, receiving the highest priority transmission data by the receiver.
3. The method of claim 1, wherein the enhanced real-time frame structure is an SOF field, and an enhanced services connection SOF 1 delimiter is added to the SOF frame to indicate that the frame type is an enhanced real-time frame.
4. The method according to claim 1, wherein the SOFe1 delimiter function is an enhanced service connection, the RD initial value is negative, and the ordered set is defined as K28.5, D21.3, D24.1, and D24.1.
5. The method for real-time transmission of enhanced data under a fiber channel according to claim 1, wherein the protocol layering model of the fiber channel comprises: an FC-0 physical link layer, an FC-1 transport layer, an FC-2 frame protocol layer, an FC-3 common service layer, and an FC-4 protocol mapping layer.
6. The method for real-time transmission of enhanced data under a fiber channel according to claim 1, wherein the fiber channel is encoded with 8B10B in the FC-1 transmission layer.
7. The method for real-time transmission of enhanced data under a fiber channel according to claim 1, wherein the FC-2 frame protocol layer uses a layered structure when building blocks, and the steps from bottom layer to top layer are as follows: frame/sequence/exchange services.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310343027.XA CN116319597A (en) | 2023-03-31 | 2023-03-31 | Enhanced data real-time transmission method under optical fiber channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310343027.XA CN116319597A (en) | 2023-03-31 | 2023-03-31 | Enhanced data real-time transmission method under optical fiber channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116319597A true CN116319597A (en) | 2023-06-23 |
Family
ID=86814966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310343027.XA Pending CN116319597A (en) | 2023-03-31 | 2023-03-31 | Enhanced data real-time transmission method under optical fiber channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116319597A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117639936A (en) * | 2023-12-12 | 2024-03-01 | 广西电网有限责任公司贵港供电局 | Transmission method and device based on IP optical fiber communication |
-
2023
- 2023-03-31 CN CN202310343027.XA patent/CN116319597A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117639936A (en) * | 2023-12-12 | 2024-03-01 | 广西电网有限责任公司贵港供电局 | Transmission method and device based on IP optical fiber communication |
| CN117639936B (en) * | 2023-12-12 | 2024-05-24 | 广西电网有限责任公司贵港供电局 | Transmission method and device based on IP optical fiber communication |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0439008B1 (en) | Station-to-station full duplex communication in a token ring local area network | |
| US5400323A (en) | Method for controlling the insertion of stations into FDDI network | |
| CN104980224A (en) | FC-AE-1553 data exchange mode design method, FC-AE-1553 data exchange mode network control method and FC-AE-1553 data exchange mode energy saving method | |
| CN112202690B (en) | High-speed bus network based on exchange and looped network redundancy | |
| CN107395400A (en) | The adaptive Dual-Ethernet redundance communicating method of space flight Ethernet time triggered | |
| CN116319597A (en) | Enhanced data real-time transmission method under optical fiber channel | |
| CN109743136A (en) | Transmitting message transfer approach, method of reseptance and processing unit | |
| CN109660462A (en) | Information self-adapting transmission method in vehicle isomery interference networks | |
| CN115914134A (en) | Vehicle-mounted Ethernet data transmission method and device based on TSN frame preemption mechanism | |
| Zhu et al. | On latency reductions in vehicle-to-vehicle networks by random linear network coding | |
| CN109246021B (en) | FPGA-based point-to-point data reliable transmission system and method | |
| CN101132337A (en) | 2M loop circuit network system based on E1 transmission | |
| CN102377482B (en) | A kind of fiber channel services fault transmission method and device | |
| CN100372334C (en) | Device and method for realizing Infini Band data transmission in optical network | |
| CN114006958B (en) | Layered application method based on small world network | |
| CN115174370B (en) | Distributed mixed data deterministic transmission device and method | |
| CN1787520B (en) | System and method for realizing internet set managing protocol on elastic packet ring | |
| CN111817928A (en) | Enhanced 100Base-TX Ethernet design | |
| CN109981427B (en) | Multi-service access network method and system | |
| CN113300756B (en) | Interstar link mesh routing system based on CCSDS specification | |
| CN112714076B (en) | Interconnected communication system and method | |
| CN210807297U (en) | Dual-unit server redundant network system | |
| CN101174964A (en) | Method for implementing multicast on SPI4.2 bus line | |
| WO1993018446A1 (en) | Accelerated token ring network | |
| CN115714694A (en) | Train communication network topological structure and communication method based on time-sensitive Ethernet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |