Radio interface data synchronous processing method and radio interface data synchronous processing device

Abstract

The invention provides a radio interface data synchronous processing method and a radio interface data synchronous processing device. The radio interface data synchronous processing method and the radio interface data synchronous processing device can ensure that data frames with the same frame number can be synchronously transmitted at radio interfaces of all radio equipment and ensure that influences caused by transmission delay and vibration are eliminated. The radio interface data synchronous processing method includes the steps: (1) the radio equipment RE0 receives a data frame Df transmitted from a radio equipment control center to the radio equipment RE0 through a loading transmission network, and the radio equipment RE0 stores the data frame Df into an internal cache unit of the radio equipment RE0; (2) the radio equipment RE0 reads the data frame Df from the internal cache unit, and then the data frame Df is subjected to processing of a radio frequency processing unit and is sent from a radio interface at the radio interface sending moment Tsend. The radio interface data synchronous processing method can be utilized to enable the data frames with the same frame number to be synchronously transmitted from the radio interfaces of all the radio equipment, and is capable of meeting the requirements of the wireless communication protocol for strict synchronization at the radio interface data sending time.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for air interface data synchronization processing. Background technique [0002] The Common Public Radio Interface (CPRI) alliance is an industrial cooperative organization dedicated to the main interface specifications between the radio equipment control center (Radio Equipment Control, REC) and the radio equipment (Radio Equipment, RE) inside the wireless base station formulation work. The Open Base Station Architecture Initiative (OBSAI) is an international organization that aims to promote the standardization of the internal interface of wireless communication base stations, and is also committed to realizing the radio equipment control center (Radio Equipment Control, REC) and wireless The interface between equipment (Radio Equipment, RE) is standardized. [0003] The two most used baseband radio frequency interface protocols in the world are Common Pu...

AI Technical Summary

Problems solved by technology

However, the existing point-to-point or point-to-multipoint transmission schemes using Common Public Radio Interface (CPRI) and Open Base Station Architecture Protocol (OBSAI) interfaces between RECs and REs severely limit the evolution of these technical directions, and urgently need to be solved

Among them, data transmission between REC and RE through bearer transmission network is an important technical direction. This technology breaks the existing data transmission mechanism of Common Public Radio Interface (CPRI) and Open Base Station Architecture Protocol (OBSAI) interface, and introduces relatively Large transmission delay and jitter affect the time synchronization requirements of wireless communication protocols for air interface antenna data transmission

[0006] Since the REC and each RE are separated by bearer transmission networks such as Public Telecom Network (Public Telecom Network, PTN), Optical Transmission Network (Optical Transmission Network, OTN) or Synchronous Digital Hierarchy (Synchronous Digital Hierarchy, SDH), etc., An RE cannot obtain an accurate clock from the REC side to achieve clock synchronization with the REC and other REs, and the processing method of the bearer transmission network (including standards and specifications) and the number of transmission stages (multi-hop) lead to transmission delays and these The jitter in the transmission delay makes the processing time of each RE air interface asynchronous, which cannot meet the requirements of some wireless communication protocols that require strict synchronization in the time of sending data over the air interface

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