Data transmission method, device and system

Abstract

The embodiment of the invention discloses a data transmission method, which comprises the following steps of: scheduling a circuit emulation service (CES) message from a buffer queue to a CES queue; scheduling a data message from the buffer queue to a data queue; sequentially performing slicing processing on a first data message from the data queue; performing encapsulation processing on a CES message in the CES queue and the sliced first data message, wherein encapsulation information comprises message type information; and competitively transmitting the encapsulated CES message and the encapsulated sliced first data message. The embodiment of the invention also discloses the data transmission method, a data transmission device and a data transmission system. The first data message is sliced, and the CES message can be instantly transmitted only after the transmission of a slice is finished without waiting for the complete transmission of the whole data message, so the problem of jitter of CES can be well solved.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a data transmission method, device and system. Background technique [0002] Packet microwave not only provides good transmission for voice services of second-generation and third-generation mobile communication networks, but also needs to provide good transmission for Ethernet services with large bandwidth and dynamic bandwidth changes after the introduction of high-speed packet access technology. Voice services can be converted into CES packets through circuit emulation technology, and transmitted on the same microwave air interface as Ethernet data services. Since the two types of services share the same microwave air interface, when the CES packet arrives, if the Ethernet data packet is being sent, the CES packet cannot be sent until the Ethernet data service is sent. When different CES packets arrive, the lengths of the Ethernet data packets being sent may be ...

AI Technical Summary

Problems solved by technology

When different CES packets arrive, the lengths of the Ethernet data packets being sent may be different, resulting in different waiting times, resulting in jitter of CES packets

The microwave air interface has a variety of modulation modes. In the 7M channel spacing quadrature phase shift keying modulation mode, the air interface bandwidth is about 10M, and it takes about 8ms to send a large Ethernet data frame. Therefore, there is no Ethernet when the CES message arrives. The blocking of data packets and the blocking of oversized frames cause a jitter with a difference of 8 ms, which has a great impact on the performance of CES services.

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