Scheduling switching method for FC-AV (Fiber Channel-Audio Video) data

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 [0001] The invention relates to the technical field of communication, in particular to a method for dispatching and exchanging Fiber Channel-Audio Video (FC-AV for short) data. Background technique [0002] The rapid development of digital information systems is accompanied by a sharp increase in electronic equipment and digitized information. For real-time image fusion (for example, combining character or pointer information with digital map images or real-time video), all imaging should be uncompressed In order to ensure the real-time and correctness of the display, uncompressed video transmission requires a large bandwidth. When displaying various videos, the delay requirement is strict, and a large delay will seriously affect the update rate of the video image. There may be a distance of several meters or even tens of meters between various video sources and displays, and the distance is also an important aspect to be considered in video transmission. Hi...

AI Technical Summary

Problems solved by technology

[0005] The traditional communication scheduler mainly performs communication scheduling in units of data frames, which does not fully consider the characteristics of FC-AV data transmission and communication needs, which not only increases the scheduling pressure of the scheduler, but also increases the overhead of FC-AV data communication. The delay and jitter generated by scheduling is large, which cannot well meet the needs of video transmission

In the core switching equipment, the traditional class3 (class3 means "three types of service" in Chinese, which is a connectionless service level) data exchange implementation method needs to schedule each data frame, and in each data frame In the communication transmission, the crossbar needs to be turned on and released once, which increases the FC-AV data transmission and scheduling overhead, and restricts the high-bandwidth and low-latency transmission of FC-AV

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