Data transmission method, device and distributed base station system

A data transmission method and data technology, applied in the direction of network traffic/resource management, electrical components, wireless communication, etc., can solve the problems of increasing costs, high link load rate, etc., and achieve the effect of improving link load rate and increasing cost

Active Publication Date: 2011-05-18
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a data transmission method, device, and distributed base station system to solve the problem of achieving a higher link load rate without increasing costs and using optical modules that support lower data transmission rates

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  • Data transmission method, device and distributed base station system
  • Data transmission method, device and distributed base station system
  • Data transmission method, device and distributed base station system

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Embodiment Construction

[0052] A data transmission method, device and distributed base station system provided by the present invention will be described in detail below with specific embodiments in conjunction with the accompanying drawings.

[0053] In the data transmission method provided by the embodiment of the present invention, in a distributed base station system, such as figure 1 shown, including the following steps:

[0054] S101. The radio remote unit RRU compresses the I / Q channel data of each antenna at the application layer, and generates a message (the basic frame structure specified in the OBSAI protocol, namely message) stream from the compressed data;

[0055] S102. The RRU sends the generated message code stream to the indoor baseband processing unit BBU;

[0056] S103. The message code stream received by the BBU extracts the compressed I / Q channel data from the message at the application layer, and decompresses the compressed I / Q channel data to obtain the I channel and Q channel d...

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Abstract

The invention discloses a data transmission method, a data transmission device and a distributed base station system. The method comprises that: a radio remote unit (RRU) compresses in-phase / quadrature (I / Q) paths of data of each antenna, and generates a message code stream by using the compressed data; the RRU transmits the generated message code stream to a base band unit (BBU); and the BBU receives the message code stream, extracts the I / Q paths of compressed data from the message code stream and decompresses the I / Q paths of compressed data to obtain the I and Q paths of data of each antenna. In the data transmission method, the data transmission device and the distributed base station system, the I / Q paths of data of each antenna are compressed on the RRU side, and the I / Q paths of compressed data are transmitted between the RRU and the BBU by adopting an optimal module supporting a relatively lower data transmission rate, and the I / Q paths of compressed data are decompressed to recover the compressed data on the BBU side. Therefore, a link bearing rate is increased on the bases of not increasing the cost and using the optimal module supporting the relatively lower data transmission rate.

Description

technical field [0001] The invention relates to a distributed base station technology in a mobile communication system, in particular to a data transmission method, device and distributed base station system. Background technique [0002] In the current 3G system, distributed base stations are widely used. Distributed base stations are composed of radio remote units (Radio Remote Unit, RRU) and indoor baseband processing units (Building Base band Unit). BBU and RRU are connected by optical fiber To make the connection, the RRU is connected to the antenna. [0003] The link load rate in the Open Base Station Architecture Initiative (OBSAI) protocol is low. The existing open base station configurations, such as 10M, 4-antenna configuration, use optical modules with low baseband data rates (1.5 G optical module), if you want to achieve a greater link load rate, for example, using a 10M bandwidth and 8-antenna configuration can greatly increase the amount of data transmission, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/06H04W88/04
CPCH04W16/26H04W88/085
Inventor 刘凯姜万成王仰锋
Owner ZTE CORP
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