An IQ data transmission method between the BBU and RRU

A transmission method and data technology, applied in transmission systems, electrical components, etc., can solve the problems of poor flexibility, difficult to support IQ data mixed transmission, poor versatility, etc., to achieve the effect of solving transmission problems

Inactive Publication Date: 2007-10-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the differentiation and diversification of wireless systems, although this structure can realize the transmission of IQ data of a certain wireless system, it also has the disadvantages of poor flexibility and poor versatility, and it is difficult to support the transmission of IQ data of multiple wireless systems. mixed transmission

Method used

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  • An IQ data transmission method between the BBU and RRU
  • An IQ data transmission method between the BBU and RRU
  • An IQ data transmission method between the BBU and RRU

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Embodiment Construction

[0041] First, the idea of ​​the present invention is explained: based on the AxC sub-channel, for systems whose chip rate is consistent with the basic frame rate of the transmission system, the features of high efficiency and simplicity are retained, and for systems whose chip rate is inconsistent with the basic frame rate of the transmission system, By constructing the message package, the reserved bits in the payload and the reserved bits in the BF Group can be reduced to achieve the purpose of high utilization and low delay. It is suitable for mixed transmission of various wireless systems and can support multi-mode The transmission interface between the baseband unit and the multimode remote radio unit.

[0042]The second step describes the specific technical solution of the present invention, including the following steps:

[0043] (1) Step 1: Divide the IQ data channel in a BF into several AxC sub-channels on average, assuming that the bit length of each AxC sub-channel ...

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Abstract

The present invention relates to an IQ data transmission method between BBU and RRU. Said method comprises the steps of putting wireless system IQ data having a sampling velocity as integral times as transmission system basic frames velocity directly to AxC subchannel for a transmission; or else, putting said data to one or N AxC subchannels for a transmission, through a packing manner. Said transmission method is compatible with direct mapping and data packet transmission modes, transmits wireless system IQ data having a code bit rate consistent with transmission system basic frames velocitydirectly and transmits other wireless system IQ data through data packet transmission mode. Therefore, said method exhibits both high efficiency of AxC subchannel direct mapping mode and flexibility of data packet mode, is capable of transmitting a variety of wireless system IQ data at one time, and satisfies network building needs of multi-mode baseband unit and multi-mode distal end radio frequency unit.

Description

technical field [0001] The present invention relates to mobile communication and baseband transmission, in particular to a baseband IQ data transmission method between a baseband unit Base BandUnit, referred to as BBU, and a remote radio unit Remote Radio Unit, referred to as RRU. Background technique [0002] (1) In recent years, the architecture development of wireless communication systems has gradually evolved into such a trend: [0003] Separate the BBU from the RRU, and connect the BBU to multiple RRUs through long-distance transmission methods including optical fibers or cables, and then place the radio frequency unit in various places where it is needed. This architecture improves the flexibility of networking on the one hand, and reduces the maintenance cost of the network on the other hand, so it is more and more recognized by users, and there are more and more application occasions. At the same time, the framework has also been written into some industry standard...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/02
Inventor 赵国峰
Owner ZTE CORP
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