High-speed interface and data transmission method thereof

Abstract

The invention provides a high-speed interface and a data transmission method thereof. A sending device of the high-speed interface comprises a message coder, a message control buffer region and a data sending buffer region, wherein the data sending buffer region is used for calculating a starting address of valid data according to the timestamp for starting to transmit the valid data and sequentially buffering payloads of data messages according to timestamps and address information bits of the data messages; the message control buffer region is used for buffering control messages required to be sent; the message coder is used for framing according to an OBSAI (Open Base Station Architecture Initiative) protocol, sequentially reading in corresponding data from the data sending buffer region, adding the timestamps and the address information bits of the data messages into the data messages, sequentially taking out the control messages from the control message buffer region and inserting the control messages into corresponding positions in a transmission link. The invention can ensure that the data transmission efficiency is greatly improved, and receiving-sending processing flows are simplified.

Description

technical field [0001] The invention relates to the technical field of data transmission, in particular to a high-speed interface and a data transmission method thereof. Background technique [0002] The Open Base Station Architecture Initiative (OBSAI) divides a base station into four functional modules: a transmission module, a baseband module, a radio frequency module, and a control clock module. Each interface between modules has a unique point of reference. The OBSAI Reference Point 3 (RP3) protocol is the interface protocol between the baseband and radio frequency blocks. Among them, the frame of the OBSAI RP3 protocol has a three-layer structure: message, message group, and frame. [0003] Among them, the message is the basic unit of the RP3 frame structure. Each message is 19 bytes, the first 3 bytes of the message header contains 13bit address information, 5bit type information and 6bit time stamp (Time Stamp) information; the last 16 bytes are payload, which can...

AI Technical Summary

Problems solved by technology

[0008] However, in the process of data transmission, meaningful valid data is not transmitted on the link at every moment, there must be some invalid data messages without valid data loaded, and the registers of the antenna interface cannot be transmitted according to the transmitted data during operation. It is not feasible to set it arbitrarily according to the change of data, and mark the data message without valid data as an empty message for delivery.

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