A method and device for transmitting multi-channel time-division services

Abstract

Disclosed is a multipath time division service transmission method, comprising: calculating a channel service serial number corresponding to the time division service of each path, determining, according to the calculated channel service serial number, the channel number (CN) of a channel having service data transmission, and respectively and sequentially writing the service data and CN of the channel having service data transmission into a service data first input first output (FIFO) and a service channel index (CI) FIFO; and correspondingly, in order to read a service, respectively reading from the service data FIFO and the service CI FIFO the service data of the time division service and the CN of the channel transmitting the same. Also disclosed is a transmission device of a multipath time division service.

Description

technical field [0001] The invention relates to data transmission technology, in particular to a method and device for transmitting multi-channel time-division services. Background technique [0002] The data transmission rate of the wireless communication system is very limited due to the limitation of the radio frequency spectrum. In order to save data transmission bandwidth, when the wireless communication system transmits multiple time-division services, a bitmap (Bitmap) is used to indicate the specific time-division service data transmitted in the current time slot. The number of channels, the bit width of the Bitmap indicates the maximum number of transmission channels of the time-division service data service supported by the system. For example, the wireless communication system supports eight channels of E1 services, then the Bitmap is 8 bits (Bit). Specifically, the frame format used in eight-channel E1 service data transmission is as follows: figure 1 As shown, ...

AI Technical Summary

Problems solved by technology

[0004] First, when data is written and read, the FIFO pointer control is relatively complicated. When the number of time-division service lines supported by the system increases to dozens or even hundreds of thousands, it is difficult to control the write pointer to ensure real-time input data. Writing to FIFO and reading the pointer will also be more complicated, not only the circuit reliability is low, but also consume a lot of circuit resources, it is difficult to realize the sequential transmission of time-division business data

[0005] Second, because the number of time-division service channels carried by each frame may be different, in extreme cases, the time-division service data of the following frame will be output FIFO ahead of the time-division service data of the previous frame, causing the time-division service data to jitter too much and cause Can not meet the needs of the communication system

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