Data transmission method of remote radio frequency unit

Abstract

Provided is a data transmission method of a remote radio frequency unit. The method includes the steps that capacity of a transmission unit is calculated according to real-time requirements of data to be transmitted; control information is obtained through the number of corresponding cells of the data to be transmitted and types of the data contained by the cells; a data block corresponding to the data to be transmitted according to the capacity of the transmission unit, capacity of the control information, and the data size of the data to be transmitted is determined; and the control information and the data block are transmitted. After application of the data transmission method, expansibility and effective bandwidth of data transmission are guaranteed.

Description

technical field [0001] The present invention relates to the technical field of communication, and more specifically, to a data transmission method of a radio remote unit. Background technique [0002] The data between the indoor baseband processing unit (BBU) and the remote radio unit (RRU) is transmitted on the optical fiber. In addition to transmitting the data that needs to be exchanged between the BBU and the RRU, the transmission protocol also needs to carry fiber delay measurement information, RRU air interface timing information, etc. The type of data exchanged is determined by the architecture division of the entire base station system by the BBU and RRU, and the fiber delay measurement information and RRU air interface timing information are determined by the transmission protocol. [0003] As the processing capability of the base station system becomes higher and higher, the structural division of the BBU and RRU will be diversified accordingly. The types of data...

AI Technical Summary

Problems solved by technology

[0007] Disadvantages: The type or amount of data changes, the data needs to be rearranged in the frame, the expansion is poor, and it is not flexible

[0012] Disadvantages: the protocol itself has a lot of information, the packet structure is complex, and the effective bandwidth is low

[0013] Taking the SRIO protocol as an example, in addition to the control information necessary to transmit data and distinguish data, the IR also transmits the header and tail information of the SRIO protocol itself and system timing information, thus reducing the effective bandwidth of the system.

In addition, the physical layer of the SRIO packet also needs to transmit the K code used to distinguish the boundary of the packet, which further reduces the effective data transmission bandwidth.

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