Switch method and switch apparatus for time division multiplexing signal

Abstract

The invention discloses one time division multiple complex signal exchange method, wherein, the time division complex signals exchange device comprises at least two input memory and at least two output memory with same number; the method comprises the following steps: establishing memory address and output memory mapping relationship; accordingly, exchanging the input memory address complex signals to relative output memory address. The invention also discloses one time division multiple path complex signal exchange device.

Description

technical field [0001] The present invention relates to time-division multiplexing signal switching technology, in particular to a time-division multiplexing signal switching method and switching device. Background technique [0002] Time Division Multiplexing (TDM) technology refers to dividing a physical channel into several time slices according to time, and assigning them to multiple signals in turn. Each time slice is occupied by a signal. In this way, each signal can be used Interleaved in time, multiple signals can be transmitted on one physical channel. The signal transmission of the Public Switched Telephone Network (PSTN) is based on the TDM technology. [0003] Please refer to FIG. 1 , which is a schematic diagram of a TDM signal switching device in the prior art. The TDM signal exchange device 100 includes: a number of serial / parallel conversion units 101, an input selection unit 102, an input memory 103, an exchange unit 104, an output memory 105, an output se...

AI Technical Summary

Problems solved by technology

The prior art TDM signal switching device has a built-in single input memory and a single output memory, and its bit width is equal to the bit width of a single input memory. If the bit width of a single input memory and a single output memory is increased, it may lead to an increase in TDM signal processing delay. The increase of the delay has a great negative impact on the voice service; the clock frequency of the TDM signal switching device is limited by the manufacturing process, and the improvement of the clock frequency is limited

It can be seen that it is difficult to increase the bandwidth of a TDM signal switching device with a built-in single input memory and a single output memory

Images