CN102523437B - Scheduling switching method for FC-AV (Fiber Channel-Audio Video) data - Google Patents
Scheduling switching method for FC-AV (Fiber Channel-Audio Video) data Download PDFInfo
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- CN102523437B CN102523437B CN201110404786.XA CN201110404786A CN102523437B CN 102523437 B CN102523437 B CN 102523437B CN 201110404786 A CN201110404786 A CN 201110404786A CN 102523437 B CN102523437 B CN 102523437B
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Abstract
The invention discloses a scheduling switching method for FC-AV (Fiber Channel-Audio Video) data. The scheduling switching method comprises the following steps of: 1, firstly, initializing core switching equipment, and configuring a port, to be subjected to FC-AV data transmission, of the core switching equipment; 2, connecting crossbar switches of a source port and a target port after successful scheduling, and outputting a first frame to be forwarded by a queue manager; 3, after the data frame is successfully forwarded, reserving the configuration of a communication scheduler and the connected crossbar switches; 4, forwarding subsequent frames via the connected crossbar switches by the queue manager; and 5, when the FC-AV data transmission is finished, releasing the crossbar switches and completing communication. According to the invention, excessive scheduling resources are prevented from being occupied during FC-AC data transmission, and the requirements on the characteristics of high bandwidth, low time delay and low vibration of FC-AV data transmission are met.
Description
Technical field
The present invention relates to communication technical field, particularly relate to the scheduling switching method of a kind of optical-fibre channel audio frequency and video (Fibre Channel-Audio Video, hereinafter to be referred as FC-AV) data.
Background technology
The develop rapidly of digital information system, incident is the sharply increase of electronic equipment and digital information, for Real-time image fusion (for example, character or pointer information are synthesized with digital map images or real-time video), all imagings should be without compression, with the real-time and the correctness that guarantee to show, uncompressed video transmission needs very large bandwidth, when various videos show, to the requirement postponing, be harsh, larger delay can have a strong impact on the renewal rate of video image.Between various video source and display, may have several meters of even tens of meters of intervals, distance is also the importance of the required consideration of transmission of video.High-performance digital video transmission need to be set up a high bandwidth, low delay, remote, safe and reliable transmission channel between video source and destination.By audio, video data being mapped to FC network, (FC network is a kind of ad hoc network that storage area network (SAN, Storage Area Network) server is connected with storage medium; FC is writing a Chinese character in simplified form of " Fibre Channel ", and its meaning is " optical-fibre channel "), form FC-AV(Fibre Channel-Audio Video, optical-fibre channel audio frequency and video) data flow, make video communication to carry out transfer of data by FC network.FC-AV data exchange transmission schematic diagram as shown in Figure 1 by core switching device.
Core switching device provides the path of exchanges data between FC-AV video source and destination, the data transmission capabilities that it provides and quality assurance the high efficiency of transmission of FC-AV video.The structure of common core switching device as shown in Figure 2, comprises storage queue, queue management device, communication scheduling device and cross bar switch.Core switching device can enter wait forwarding in storage queue after receiving FC-AV Frame, by Frame destination address is carried out to addressing, communication scheduling device carries out rational management and connects corresponding cross bar switch data path data, queue management device is received after scheduling result, data are sent to destination address by cross bar switch, complete data communication.In traditional scheduler design, scheduler can carry out polling dispatching to each Frame, after dispatching successfully, connect corresponding cross bar switch, complete the forwarding communication of Frame, remove the data of input rank simultaneously, after the end of transmission, discharge the cross bar switch of connecting, wait for the scheduling of next Frame.
Communication scheduling device design is the core of exchange, the correctness, reliability of scheduling how, the quality of dispatching efficiency is directly connected to job stability and the communication efficiency of whole core switching device, affect the quality of transmission of video, must in core switching device communication scheduling, to data stream, carry out reasonable, efficient and stable communication scheduling.FC-AV data communication has following characteristics: be generally connected to port on core switching device relatively fixing, data are always transmitted to display device from video source, transmission bandwidth is very large, the first frame AV packet has contained video frequency feature data, and the transmission intercal have between this frame and subsequent frame reasonable time.
Traditional communication scheduling device mainly communicates scheduling take Frame as unit, do not fully take into account the feature and the needs of communicating by letter of FC-AV transfer of data, both increased the scheduling pressure of scheduler, also increased the expense of FC-AV data communication, the delay jitter that scheduling produces is larger, can not meet well the needs of transmission of video.In core switching device, the Chinese meaning of traditional class3(class3 is " three class services ", a kind of connectionless service class) exchanges data implementation need to dispatch each Frame, and to connect and discharge cross bar switch once in each communications of Frame, increase FC-AV transfer of data and scheduling overhead, restricted the high bandwidth low delay transmission of FC-AV.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of scheduling switching method of FC-AV data, and it has avoided taking too much scheduling resource in FC-AV transfer of data, meets high bandwidth, the low delay of FC-AV transfer of data, the characteristic of property of low jitter.
The present invention solves above-mentioned technical problem by following technical proposals: a kind of scheduling switching method of FC-AV data, it is characterized in that, and the method comprises the following steps:
Step 1: first initialization core switching device, the port that need to carry out FC-AV transfer of data to core switching device is configured;
Step 2: when the port after configuration is received the first frame of FC-AV data, communication scheduling device deposits respective stored queue in after receiving these data, according to traditional scheduler algorithm, carry out polling dispatching, communication scheduling device parameter is carried out to relevant configuration, after dispatching successfully, the cross bar switch of source port and destination interface is connected the first frame that queue management device output forwards;
Step 3: after this Frame is successfully forwarded, retain the configuration of communication scheduling device parameter and the cross bar switch of connection;
Step 4: the storage queue corresponding to subsequent frame entry port of FC-AV data, under the prerequisite allowing in flow control, queue management device forwards subsequent frame order by the cross bar switch of having connected;
Step 5: when after FC-AV DTD, discharge cross bar switch, recover the initial parameter of communication scheduling device, communication completes.
After the port arrangement success of described step 1, communication scheduling device can be dispatched corresponding port.
Positive progressive effect of the present invention is: the demand that the present invention is directed to high-speed figure transmission of video, meeting on the basis of FC agreement, by the exchanging mechanism to traditional, carry out corresponding improvement, do not affecting under the prerequisite of other class-3 exchanges data, simplified the scheduling switching method of FC-AV data, meet the switched communication demand of common class-3 data and FC-AV data simultaneously, and met low delay, high bandwidth, the low jitter characteristic of transmission of video.
Accompanying drawing explanation
Fig. 1 is FC-AV transfer of data schematic diagram;
Fig. 2 is the structural representation of common core switching device;
Fig. 3 is the flow chart of the scheduling switching method of traditional class-3 data;
Fig. 4 is the flow chart of the scheduling switching method of FC-AV data of the present invention;
Embodiment
Below in conjunction with accompanying drawing, provide preferred embodiment of the present invention, to describe technical scheme of the present invention in detail.Embodiment
Basic ideas of the present invention are: first the port that connects FC-AV data is configured, communication scheduling device is equal to traditional design method to the processing of the first frame: communication scheduling device deposits respective stored queue in after receiving these data, wait for scheduling, after dispatching successfully, connect cross bar switch and transmit data.When after the first frame end communication, the present invention is different from the processing of traditional communication scheduler design: retain the cross bar switch of connection and the configuration of communication scheduling device parameter, after subsequent data frame enters, queue management device carries out order forwarding to entering the data of storage queue, according to the schedule information of having preserved, by the cross bar switch of connecting, carry out transfer of data, thereby core switching device reaches the network characteristic of low expense high bandwidth low jitter in FC-AV transfer of data.
Fig. 2 is the structural representation of common core switching device, and traditional core switching device architecture is divided into three kinds, input rank structure, output queue structure, VOQ structure.Fig. 2 is take input rank structure wherein as example, but the present invention is not limited to certain specific architecture and dispatching algorithm.
As shown in Figure 3, initialization core switching device, when receiving after class-3 Frame, according to traditional scheduler algorithm, carry out polling dispatching, be that class-3 Frame is entering after queue stores, communication scheduling device is started working, by the extraction to destination address, cross bar switch is connected, after class-3 Frame is transmitted to destination interface, recover the scheduling initial configuration of communication scheduling device, discharge the cross bar switch of connecting.This exchanged form is applicable to common class-3 transfer of data, but can not meet well the feature of FC-AV transfer of data.
As shown in Figure 4, the scheduling switching method of FC-AV data of the present invention comprises the following steps:
Step 1: first initialization core switching device, the port that need to carry out FC-AV transfer of data to core switching device is configured, and after configuration successful, communication scheduling device can be dispatched corresponding port.
Step 2: when the port after configuration is received the first frame of FC-AV data, communication scheduling device deposits respective stored queue in after receiving these data, according to traditional scheduler algorithm, carry out polling dispatching, communication scheduling device parameter is carried out to relevant configuration, after dispatching successfully, the cross bar switch of source port and destination interface is connected the first frame that queue management device output forwards.
Step 3: after this Frame is successfully forwarded, retain the configuration of communication scheduling device parameter and the cross bar switch of connection, do not discharge the cross bar switch of connection, the frequent scheduling while having avoided subsequent frame transmission and the connection of cross bar switch discharge.
Step 4: the storage queue corresponding to subsequent frame entry port of FC-AV data, under the prerequisite allowing in flow control, queue management device forwards subsequent frame order by the cross bar switch of having connected.
Step 5: when after FC-AV DTD, discharge cross bar switch, recover the initial parameter of communication scheduling device, communication completes.
The present invention, according to the understanding to FC-AV agreement, on the basis of current traditional class-3 data exchange mechanism, proposes a kind of exchange scheduling mechanism of new FC-AV data.With respect to the scheduling switching method of traditional class-3 data, the scheduling switching method that the present invention proposes can reduce FC-AV data dispatch expense effectively, has improved the video transmission efficiency of FC-AV.The present invention dispatches switching method and has met the demand to transmission of video in digital information system.
Although more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, do not deviating under the prerequisite of principle of the present invention and essence, can make various changes or modifications to these execution modes.Therefore, protection scope of the present invention is limited by appended claims.
Claims (2)
1. a scheduling switching method for optical-fibre channel audio-visual data, is characterized in that, the method comprises the following steps:
Step 1: first initialization core switching device, the port that need to carry out the transmission of optical-fibre channel audio-visual data to core switching device is configured;
Step 2: when the port after configuration is received the first frame of optical-fibre channel audio-visual data, communication scheduling device deposits respective stored queue in after receiving these data, according to traditional scheduler algorithm, carry out polling dispatching, communication scheduling device parameter is carried out to relevant configuration, after dispatching successfully, the cross bar switch of source port and destination interface is connected the first frame that queue management device output forwards;
Step 3: after this Frame is successfully forwarded, retain the configuration of communication scheduling device parameter and the cross bar switch of connection;
Step 4: the storage queue corresponding to subsequent frame entry port of optical-fibre channel audio-visual data, under the prerequisite allowing in flow control, queue management device forwards subsequent frame order by the cross bar switch of having connected;
Step 5: when after the optical-fibre channel audio-visual data end of transmission, discharge cross bar switch, recover the initial parameter of communication scheduling device, communication completes.
2. the scheduling switching method of optical-fibre channel audio-visual data as claimed in claim 1, is characterized in that, after the port arrangement success of described step 1, communication scheduling device can be dispatched corresponding port.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2154296A1 (en) * | 1994-11-08 | 1996-05-09 | Bent Stoevhase | Method and apparatus for configuring fabrics within a fibre channel system |
| CN1338837A (en) * | 2000-08-10 | 2002-03-06 | 日本电气株式会社 | Device, method and system for transmitting frames |
| US7447198B1 (en) * | 2001-04-23 | 2008-11-04 | Brocade Communications Systems, Inc. | Link trunking and measuring link latency in fibre channel fabric |
| CN101471859A (en) * | 2007-12-25 | 2009-07-01 | 中国航空无线电电子研究所 | Method for optimizing high speed switched network equipment communication scheduling device |
| CN101582892A (en) * | 2009-06-19 | 2009-11-18 | 杭州华三通信技术有限公司 | Link negotiation method based on fiber channel aggregate port and device |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2154296A1 (en) * | 1994-11-08 | 1996-05-09 | Bent Stoevhase | Method and apparatus for configuring fabrics within a fibre channel system |
| CN1338837A (en) * | 2000-08-10 | 2002-03-06 | 日本电气株式会社 | Device, method and system for transmitting frames |
| US7447198B1 (en) * | 2001-04-23 | 2008-11-04 | Brocade Communications Systems, Inc. | Link trunking and measuring link latency in fibre channel fabric |
| CN101471859A (en) * | 2007-12-25 | 2009-07-01 | 中国航空无线电电子研究所 | Method for optimizing high speed switched network equipment communication scheduling device |
| CN101582892A (en) * | 2009-06-19 | 2009-11-18 | 杭州华三通信技术有限公司 | Link negotiation method based on fiber channel aggregate port and device |
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