Encoding method and device as well as decoding method and device based on dynamic time slot

Abstract

The embodiment of the invention discloses an encoding method and device as well as a decoding method and device based on a dynamic time slot, and relates to the field of communication. The encoding method comprises the following steps of: counting the numbers of correct frames, wrong frames and overrunning buffers; judging a time slot bandwidth required by the current data flow according to the null pointer, full pointer and current water level information of a buffer queue; distributing the time slot bandwidth to the current data flow; reading data in the buffer queue, and serially encoding the data according to code types of a frame interval, a frame header and a frame end; and mapping serially encoded data and channel time slot information into a super-frame, a frame, a sub-frame and bursts. Therefore, data frames can be easily and flexibly transmitted in coaxial cables or optical fiber channels in a length-changing manner; and furthermore, the methods and the devices can be applied to transmission and access of standard time division multiplex (TDM) services such as synchronous digital hierarchy (SDH), pseudo-synchronous digital hierarchy (PDH) and the like, so the bandwidth of data transmission is saved greatly.

Description

technical field [0001] The present invention relates to the communication field, in particular to a dynamic time slot-based encoding method and device, and a decoding method and device. Background technique [0002] At present, most data services appear in the form of messages, that is, data frames. However, due to the various and uncertain applications of data services, the frame length of data frames also changes. For example, Ethernet Business, H.264 code stream data, MPEG code stream data, etc., their data frame size is not fixed. However, long-distance data transmission generally relies on coaxial cables or optical fibers on physical lines. In order to meet high-speed requirements, data is transmitted serially on physical lines. [0003] In order to reasonably, efficiently, simply and reliably encapsulate the data frame into each time slot channel for transmission on the serialized channel, a specific encoding method is required. However, if the coding method cannot r...

AI Technical Summary

Problems solved by technology

However, if the encoding method cannot reflect the dynamic and variable bandwidth, too much bandwidth will be wasted. If there are many service channels, the wasted bandwidth will be huge

Images